diff --git a/public/develop/404.html b/public/develop/404.html
index 5869d36a6b86f944adf61772a89909fadcdb3428..6ad36185d2adbab7799636247617b91012d12673 100644
--- a/public/develop/404.html
+++ b/public/develop/404.html
@@ -16,7 +16,7 @@
<link rel="icon" href="/develop/images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -24,7 +24,7 @@
- <link rel="stylesheet" href="/develop/assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="/develop/assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="/develop/assets/stylesheets/palette.06af60db.min.css">
@@ -229,6 +229,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -249,6 +250,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -269,6 +271,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -289,6 +292,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -309,6 +313,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -329,6 +334,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -349,6 +355,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -369,6 +376,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -389,6 +397,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -409,6 +418,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -529,7 +539,7 @@
<script id="__config" type="application/json">{"base": "/develop", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "/develop/assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="/develop/assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="/develop/assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/assets/javascripts/bundle.60a45f97.min.js b/public/develop/assets/javascripts/bundle.f1b6f286.min.js
similarity index 62%
rename from public/develop/assets/javascripts/bundle.60a45f97.min.js
rename to public/develop/assets/javascripts/bundle.f1b6f286.min.js
index f8f18f6ccec8cf820f34c16f5d14ed3f710b1f17..50826750fc14dd8c7c6312a32c5f162370b89ca8 100644
--- a/public/develop/assets/javascripts/bundle.60a45f97.min.js
+++ b/public/develop/assets/javascripts/bundle.f1b6f286.min.js
@@ -1,4 +1,4 @@
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l=R(`label[for="${c.id}"]`);l.replaceChildren(x("a",{href:`#${l.htmlFor}`,tabIndex:-1},...Array.from(l.childNodes))),h(l.firstElementChild,"click").pipe(W(p),b(f=>!(f.metaKey||f.ctrlKey)),w(f=>{f.preventDefault(),f.stopPropagation()})).subscribe(()=>{history.replaceState({},"",`#${l.htmlFor}`),l.click()})}return B("content.tabs.link")&&s.pipe(Ce(1),re(t)).subscribe(([{active:c},{offset:l}])=>{let f=c.innerText.trim();if(c.hasAttribute("data-md-switching"))c.removeAttribute("data-md-switching");else{let u=e.offsetTop-l.y;for(let y of P("[data-tabs]"))for(let L of P(":scope > input",y)){let X=R(`label[for="${L.id}"]`);if(X!==c&&X.innerText.trim()===f){X.setAttribute("data-md-switching",""),L.click();break}}window.scrollTo({top:e.offsetTop-u});let d=__md_get("__tabs")||[];__md_set("__tabs",[...new Set([f,...d])])}}),s.pipe(W(p)).subscribe(()=>{for(let c of P("audio, video",e))c.pause()}),Ya(n).pipe(w(c=>s.next(c)),_(()=>s.complete()),m(c=>$({ref:e},c)))}).pipe(Ke(se))}function zn(e,{viewport$:t,target$:r,print$:o}){return O(...P(".annotate:not(.highlight)",e).map(n=>Pn(n,{target$:r,print$:o})),...P("pre:not(.mermaid) > code",e).map(n=>jn(n,{target$:r,print$:o})),...P("pre.mermaid",e).map(n=>Wn(n)),...P("table:not([class])",e).map(n=>Vn(n)),...P("details",e).map(n=>Fn(n,{target$:r,print$:o})),...P("[data-tabs]",e).map(n=>Nn(n,{viewport$:t,target$:r})),...P("[title]",e).filter(()=>B("content.tooltips")).map(n=>mt(n,{viewport$:t})))}function Ba(e,{alert$:t}){return t.pipe(v(r=>O(I(!0),I(!1).pipe(Ge(2e3))).pipe(m(o=>({message:r,active:o})))))}function qn(e,t){let r=R(".md-typeset",e);return C(()=>{let o=new g;return o.subscribe(({message:n,active:i})=>{e.classList.toggle("md-dialog--active",i),r.textContent=n}),Ba(e,t).pipe(w(n=>o.next(n)),_(()=>o.complete()),m(n=>$({ref:e},n)))})}var Ga=0;function Ja(e,t){document.body.append(e);let{width:r}=ce(e);e.style.setProperty("--md-tooltip-width",`${r}px`),e.remove();let o=cr(t),n=typeof 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i.subscribe({next({offset:a}){o.style.setProperty("--md-tooltip-x",`${a.x}px`),o.style.setProperty("--md-tooltip-y",`${a.y}px`)},complete(){o.style.removeProperty("--md-tooltip-x"),o.style.removeProperty("--md-tooltip-y")}}),O(i.pipe(b(({active:a})=>a)),i.pipe(_e(250),b(({active:a})=>!a))).subscribe({next({active:a}){a?(e.insertAdjacentElement("afterend",o),e.setAttribute("aria-describedby",r),e.removeAttribute("title")):(o.remove(),e.removeAttribute("aria-describedby"),e.setAttribute("title",t))},complete(){o.remove(),e.removeAttribute("aria-describedby"),e.setAttribute("title",t)}}),i.pipe(Me(16,me)).subscribe(({active:a})=>{o.classList.toggle("md-tooltip--active",a)}),i.pipe(pt(125,me),b(()=>!!e.offsetParent),m(()=>e.offsetParent.getBoundingClientRect()),m(({x:a})=>a)).subscribe({next(a){a?o.style.setProperty("--md-tooltip-0",`${-a}px`):o.style.removeProperty("--md-tooltip-0")},complete(){o.style.removeProperty("--md-tooltip-0")}}),Ja(o,e).pipe(w(a=>i.next(a)),_(()=>i.complete()),m(a=>$({ref:e},a)))}).pipe(Ke(se))}function Xa({viewport$:e}){if(!B("header.autohide"))return I(!1);let t=e.pipe(m(({offset:{y:n}})=>n),Be(2,1),m(([n,i])=>[n<i,i]),ee(0)),r=z([e,t]).pipe(b(([{offset:n},[,i]])=>Math.abs(i-n.y)>100),m(([,[n]])=>n),K()),o=ze("search");return z([e,o]).pipe(m(([{offset:n},i])=>n.y>400&&!i),K(),v(n=>n?r:I(!1)),Q(!1))}function Kn(e,t){return C(()=>z([ge(e),Xa(t)])).pipe(m(([{height:r},o])=>({height:r,hidden:o})),K((r,o)=>r.height===o.height&&r.hidden===o.hidden),G(1))}function Yn(e,{header$:t,main$:r}){return C(()=>{let o=new g,n=o.pipe(Z(),ie(!0));o.pipe(ee("active"),He(t)).subscribe(([{active:a},{hidden:s}])=>{e.classList.toggle("md-header--shadow",a&&!s),e.hidden=s});let i=ue(P("[title]",e)).pipe(b(()=>B("content.tooltips")),ne(a=>Qn(a)));return r.subscribe(o),t.pipe(W(n),m(a=>$({ref:e},a)),Re(i.pipe(W(n))))})}function Za(e,{viewport$:t,header$:r}){return mr(e,{viewport$:t,header$:r}).pipe(m(({offset:{y:o}})=>{let{height:n}=ce(e);return{active:o>=n}}),ee("active"))}function Bn(e,t){return C(()=>{let r=new g;r.subscribe({next({active:n}){e.classList.toggle("md-header__title--active",n)},complete(){e.classList.remove("md-header__title--active")}});let o=fe(".md-content h1");return typeof o=="undefined"?S:Za(o,t).pipe(w(n=>r.next(n)),_(()=>r.complete()),m(n=>$({ref:e},n)))})}function Gn(e,{viewport$:t,header$:r}){let o=r.pipe(m(({height:i})=>i),K()),n=o.pipe(v(()=>ge(e).pipe(m(({height:i})=>({top:e.offsetTop,bottom:e.offsetTop+i})),ee("bottom"))));return z([o,n,t]).pipe(m(([i,{top:a,bottom:s},{offset:{y:p},size:{height:c}}])=>(c=Math.max(0,c-Math.max(0,a-p,i)-Math.max(0,c+p-s)),{offset:a-i,height:c,active:a-i<=p})),K((i,a)=>i.offset===a.offset&&i.height===a.height&&i.active===a.active))}function es(e){let t=__md_get("__palette")||{index:e.findIndex(o=>matchMedia(o.getAttribute("data-md-color-media")).matches)},r=Math.max(0,Math.min(t.index,e.length-1));return I(...e).pipe(ne(o=>h(o,"change").pipe(m(()=>o))),Q(e[r]),m(o=>({index:e.indexOf(o),color:{media:o.getAttribute("data-md-color-media"),scheme:o.getAttribute("data-md-color-scheme"),primary:o.getAttribute("data-md-color-primary"),accent:o.getAttribute("data-md-color-accent")}})),G(1))}function Jn(e){let t=P("input",e),r=x("meta",{name:"theme-color"});document.head.appendChild(r);let o=x("meta",{name:"color-scheme"});document.head.appendChild(o);let n=Pt("(prefers-color-scheme: light)");return C(()=>{let i=new g;return i.subscribe(a=>{if(document.body.setAttribute("data-md-color-switching",""),a.color.media==="(prefers-color-scheme)"){let s=matchMedia("(prefers-color-scheme: light)"),p=document.querySelector(s.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: 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c.length=0;return c})).subscribe(s=>e.innerHTML=s.join("").replace(/\s/g," ")),r.pipe(b(({mode:s})=>s==="search")).subscribe(s=>{switch(s.type){case"ArrowRight":e.innerText.length&&n.selectionStart===n.value.length&&(n.value=e.innerText);break}}),t.pipe(b(dr),m(({data:s})=>s)).pipe(w(s=>o.next(s)),_(()=>o.complete()),m(()=>({ref:e})))}function ui(e,{index$:t,keyboard$:r}){let o=xe();try{let n=ai(o.search,t),i=Se("search-query",e),a=Se("search-result",e);h(e,"click").pipe(b(({target:p})=>p instanceof Element&&!!p.closest("a"))).subscribe(()=>Je("search",!1)),r.pipe(b(({mode:p})=>p==="search")).subscribe(p=>{let c=Ie();switch(p.type){case"Enter":if(c===i){let l=new Map;for(let f of P(":first-child [href]",a)){let u=f.firstElementChild;l.set(f,parseFloat(u.getAttribute("data-md-score")))}if(l.size){let[[f]]=[...l].sort(([,u],[,d])=>d-u);f.click()}p.claim()}break;case"Escape":case"Tab":Je("search",!1),i.blur();break;case"ArrowUp":case"ArrowDown":if(typeof c=="undefined")i.focus();else{let 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n){let{childNodes:c}=x("span",null,p);s.replaceWith(...Array.from(c))}return{ref:e,nodes:n}}))}function fs(e,{viewport$:t,main$:r}){let o=e.closest(".md-grid"),n=o.offsetTop-o.parentElement.offsetTop;return z([r,t]).pipe(m(([{offset:i,height:a},{offset:{y:s}}])=>(a=a+Math.min(n,Math.max(0,s-i))-n,{height:a,locked:s>=i+n})),K((i,a)=>i.height===a.height&&i.locked===a.locked))}function Zr(e,o){var n=o,{header$:t}=n,r=so(n,["header$"]);let i=R(".md-sidebar__scrollwrap",e),{y:a}=Ve(i);return C(()=>{let s=new g,p=s.pipe(Z(),ie(!0)),c=s.pipe(Me(0,me));return c.pipe(re(t)).subscribe({next([{height:l},{height:f}]){i.style.height=`${l-2*a}px`,e.style.top=`${f}px`},complete(){i.style.height="",e.style.top=""}}),c.pipe(Ae()).subscribe(()=>{for(let l of P(".md-nav__link--active[href]",e)){if(!l.clientHeight)continue;let f=l.closest(".md-sidebar__scrollwrap");if(typeof f!="undefined"){let u=l.offsetTop-f.offsetTop,{height:d}=ce(f);f.scrollTo({top:u-d/2})}}}),ue(P("label[tabindex]",e)).pipe(ne(l=>h(l,"click").pipe(ve(se),m(()=>l),W(p)))).subscribe(l=>{let f=R(`[id="${l.htmlFor}"]`);R(`[aria-labelledby="${l.id}"]`).setAttribute("aria-expanded",`${f.checked}`)}),fs(e,r).pipe(w(l=>s.next(l)),_(()=>s.complete()),m(l=>$({ref:e},l)))})}function hi(e,t){if(typeof t!="undefined"){let r=`https://api.github.com/repos/${e}/${t}`;return st(je(`${r}/releases/latest`).pipe(de(()=>S),m(o=>({version:o.tag_name})),De({})),je(r).pipe(de(()=>S),m(o=>({stars:o.stargazers_count,forks:o.forks_count})),De({}))).pipe(m(([o,n])=>$($({},o),n)))}else{let r=`https://api.github.com/users/${e}`;return je(r).pipe(m(o=>({repositories:o.public_repos})),De({}))}}function bi(e,t){let r=`https://${e}/api/v4/projects/${encodeURIComponent(t)}`;return st(je(`${r}/releases/permalink/latest`).pipe(de(()=>S),m(({tag_name:o})=>({version:o})),De({})),je(r).pipe(de(()=>S),m(({star_count:o,forks_count:n})=>({stars:o,forks:n})),De({}))).pipe(m(([o,n])=>$($({},o),n)))}function vi(e){let t=e.match(/^.+github\.com\/([^/]+)\/?([^/]+)?/i);if(t){let[,r,o]=t;return hi(r,o)}if(t=e.match(/^.+?([^/]*gitlab[^/]+)\/(.+?)\/?$/i),t){let[,r,o]=t;return bi(r,o)}return S}var us;function ds(e){return us||(us=C(()=>{let t=__md_get("__source",sessionStorage);if(t)return I(t);if(ae("consent").length){let o=__md_get("__consent");if(!(o&&o.github))return S}return vi(e.href).pipe(w(o=>__md_set("__source",o,sessionStorage)))}).pipe(de(()=>S),b(t=>Object.keys(t).length>0),m(t=>({facts:t})),G(1)))}function gi(e){let t=R(":scope > :last-child",e);return C(()=>{let r=new g;return r.subscribe(({facts:o})=>{t.appendChild(_n(o)),t.classList.add("md-source__repository--active")}),ds(e).pipe(w(o=>r.next(o)),_(()=>r.complete()),m(o=>$({ref:e},o)))})}function hs(e,{viewport$:t,header$:r}){return ge(document.body).pipe(v(()=>mr(e,{header$:r,viewport$:t})),m(({offset:{y:o}})=>({hidden:o>=10})),ee("hidden"))}function yi(e,t){return C(()=>{let r=new g;return r.subscribe({next({hidden:o}){e.hidden=o},complete(){e.hidden=!1}}),(B("navigation.tabs.sticky")?I({hidden:!1}):hs(e,t)).pipe(w(o=>r.next(o)),_(()=>r.complete()),m(o=>$({ref:e},o)))})}function bs(e,{viewport$:t,header$:r}){let o=new Map,n=P(".md-nav__link",e);for(let s of n){let p=decodeURIComponent(s.hash.substring(1)),c=fe(`[id="${p}"]`);typeof c!="undefined"&&o.set(s,c)}let i=r.pipe(ee("height"),m(({height:s})=>{let p=Se("main"),c=R(":scope > :first-child",p);return s+.8*(c.offsetTop-p.offsetTop)}),pe());return ge(document.body).pipe(ee("height"),v(s=>C(()=>{let p=[];return I([...o].reduce((c,[l,f])=>{for(;p.length&&o.get(p[p.length-1]).tagName>=f.tagName;)p.pop();let u=f.offsetTop;for(;!u&&f.parentElement;)f=f.parentElement,u=f.offsetTop;let 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f=="undefined"?S:h(f,"toggle").pipe(W(o),m(()=>f))})).subscribe(l=>{l.open===!1&&l.offsetTop<=i.scrollTop&&i.scrollTo({top:l.offsetTop})}),t.pipe(b(dr),m(({data:l})=>l)).pipe(w(l=>o.next(l)),_(()=>o.complete()),m(l=>$({ref:e},l)))}function ms(e,{query$:t}){return t.pipe(m(({value:r})=>{let o=ye();return o.hash="",r=r.replace(/\s+/g,"+").replace(/&/g,"%26").replace(/=/g,"%3D"),o.search=`q=${r}`,{url:o}}))}function mi(e,t){let r=new g,o=r.pipe(Z(),ie(!0));return r.subscribe(({url:n})=>{e.setAttribute("data-clipboard-text",e.href),e.href=`${n}`}),h(e,"click").pipe(W(o)).subscribe(n=>n.preventDefault()),ms(e,t).pipe(w(n=>r.next(n)),_(()=>r.complete()),m(n=>$({ref:e},n)))}function fi(e,{worker$:t,keyboard$:r}){let o=new g,n=Se("search-query"),i=O(h(n,"keydown"),h(n,"focus")).pipe(ve(se),m(()=>n.value),K());return o.pipe(He(i),m(([{suggest:s},p])=>{let c=p.split(/([\s-]+)/);if(s!=null&&s.length&&c[c.length-1]){let l=s[s.length-1];l.startsWith(c[c.length-1])&&(c[c.length-1]=l)}else c.length=0;return c})).subscribe(s=>e.innerHTML=s.join("").replace(/\s/g," ")),r.pipe(b(({mode:s})=>s==="search")).subscribe(s=>{switch(s.type){case"ArrowRight":e.innerText.length&&n.selectionStart===n.value.length&&(n.value=e.innerText);break}}),t.pipe(b(dr),m(({data:s})=>s)).pipe(w(s=>o.next(s)),_(()=>o.complete()),m(()=>({ref:e})))}function ui(e,{index$:t,keyboard$:r}){let o=xe();try{let n=ai(o.search,t),i=Se("search-query",e),a=Se("search-result",e);h(e,"click").pipe(b(({target:p})=>p instanceof Element&&!!p.closest("a"))).subscribe(()=>Je("search",!1)),r.pipe(b(({mode:p})=>p==="search")).subscribe(p=>{let c=Ie();switch(p.type){case"Enter":if(c===i){let l=new Map;for(let f of P(":first-child [href]",a)){let u=f.firstElementChild;l.set(f,parseFloat(u.getAttribute("data-md-score")))}if(l.size){let[[f]]=[...l].sort(([,u],[,d])=>d-u);f.click()}p.claim()}break;case"Escape":case"Tab":Je("search",!1),i.blur();break;case"ArrowUp":case"ArrowDown":if(typeof c=="undefined")i.focus();else{let l=[i,...P(":not(details) > [href], summary, details[open] [href]",a)],f=Math.max(0,(Math.max(0,l.indexOf(c))+l.length+(p.type==="ArrowUp"?-1:1))%l.length);l[f].focus()}p.claim();break;default:i!==Ie()&&i.focus()}}),r.pipe(b(({mode:p})=>p==="global")).subscribe(p=>{switch(p.type){case"f":case"s":case"/":i.focus(),i.select(),p.claim();break}});let s=pi(i,{worker$:n});return O(s,li(a,{worker$:n,query$:s})).pipe(Re(...ae("search-share",e).map(p=>mi(p,{query$:s})),...ae("search-suggest",e).map(p=>fi(p,{worker$:n,keyboard$:r}))))}catch(n){return e.hidden=!0,Ye}}function di(e,{index$:t,location$:r}){return z([t,r.pipe(Q(ye()),b(o=>!!o.searchParams.get("h")))]).pipe(m(([o,n])=>ii(o.config)(n.searchParams.get("h"))),m(o=>{var a;let n=new Map,i=document.createNodeIterator(e,NodeFilter.SHOW_TEXT);for(let s=i.nextNode();s;s=i.nextNode())if((a=s.parentElement)!=null&&a.offsetHeight){let p=s.textContent,c=o(p);c.length>p.length&&n.set(s,c)}for(let[s,p]of n){let{childNodes:c}=x("span",null,p);s.replaceWith(...Array.from(c))}return{ref:e,nodes:n}}))}function fs(e,{viewport$:t,main$:r}){let o=e.closest(".md-grid"),n=o.offsetTop-o.parentElement.offsetTop;return z([r,t]).pipe(m(([{offset:i,height:a},{offset:{y:s}}])=>(a=a+Math.min(n,Math.max(0,s-i))-n,{height:a,locked:s>=i+n})),K((i,a)=>i.height===a.height&&i.locked===a.locked))}function Zr(e,o){var n=o,{header$:t}=n,r=so(n,["header$"]);let i=R(".md-sidebar__scrollwrap",e),{y:a}=De(i);return C(()=>{let s=new g,p=s.pipe(Z(),ie(!0)),c=s.pipe(Me(0,me));return c.pipe(re(t)).subscribe({next([{height:l},{height:f}]){i.style.height=`${l-2*a}px`,e.style.top=`${f}px`},complete(){i.style.height="",e.style.top=""}}),c.pipe(Ae()).subscribe(()=>{for(let l of P(".md-nav__link--active[href]",e)){if(!l.clientHeight)continue;let f=l.closest(".md-sidebar__scrollwrap");if(typeof f!="undefined"){let u=l.offsetTop-f.offsetTop,{height:d}=ce(f);f.scrollTo({top:u-d/2})}}}),ue(P("label[tabindex]",e)).pipe(ne(l=>h(l,"click").pipe(ve(se),m(()=>l),W(p)))).subscribe(l=>{let f=R(`[id="${l.htmlFor}"]`);R(`[aria-labelledby="${l.id}"]`).setAttribute("aria-expanded",`${f.checked}`)}),fs(e,r).pipe(w(l=>s.next(l)),_(()=>s.complete()),m(l=>$({ref:e},l)))})}function hi(e,t){if(typeof t!="undefined"){let r=`https://api.github.com/repos/${e}/${t}`;return st(je(`${r}/releases/latest`).pipe(de(()=>S),m(o=>({version:o.tag_name})),Ve({})),je(r).pipe(de(()=>S),m(o=>({stars:o.stargazers_count,forks:o.forks_count})),Ve({}))).pipe(m(([o,n])=>$($({},o),n)))}else{let r=`https://api.github.com/users/${e}`;return je(r).pipe(m(o=>({repositories:o.public_repos})),Ve({}))}}function bi(e,t){let r=`https://${e}/api/v4/projects/${encodeURIComponent(t)}`;return st(je(`${r}/releases/permalink/latest`).pipe(de(()=>S),m(({tag_name:o})=>({version:o})),Ve({})),je(r).pipe(de(()=>S),m(({star_count:o,forks_count:n})=>({stars:o,forks:n})),Ve({}))).pipe(m(([o,n])=>$($({},o),n)))}function vi(e){let t=e.match(/^.+github\.com\/([^/]+)\/?([^/]+)?/i);if(t){let[,r,o]=t;return hi(r,o)}if(t=e.match(/^.+?([^/]*gitlab[^/]+)\/(.+?)\/?$/i),t){let[,r,o]=t;return bi(r,o)}return S}var us;function ds(e){return us||(us=C(()=>{let t=__md_get("__source",sessionStorage);if(t)return I(t);if(ae("consent").length){let o=__md_get("__consent");if(!(o&&o.github))return S}return vi(e.href).pipe(w(o=>__md_set("__source",o,sessionStorage)))}).pipe(de(()=>S),b(t=>Object.keys(t).length>0),m(t=>({facts:t})),G(1)))}function gi(e){let t=R(":scope > :last-child",e);return C(()=>{let r=new g;return r.subscribe(({facts:o})=>{t.appendChild(_n(o)),t.classList.add("md-source__repository--active")}),ds(e).pipe(w(o=>r.next(o)),_(()=>r.complete()),m(o=>$({ref:e},o)))})}function hs(e,{viewport$:t,header$:r}){return ge(document.body).pipe(v(()=>mr(e,{header$:r,viewport$:t})),m(({offset:{y:o}})=>({hidden:o>=10})),te("hidden"))}function yi(e,t){return C(()=>{let r=new g;return r.subscribe({next({hidden:o}){e.hidden=o},complete(){e.hidden=!1}}),(B("navigation.tabs.sticky")?I({hidden:!1}):hs(e,t)).pipe(w(o=>r.next(o)),_(()=>r.complete()),m(o=>$({ref:e},o)))})}function bs(e,{viewport$:t,header$:r}){let o=new Map,n=P(".md-nav__link",e);for(let s of n){let p=decodeURIComponent(s.hash.substring(1)),c=fe(`[id="${p}"]`);typeof c!="undefined"&&o.set(s,c)}let i=r.pipe(te("height"),m(({height:s})=>{let p=Se("main"),c=R(":scope > :first-child",p);return s+.8*(c.offsetTop-p.offsetTop)}),pe());return ge(document.body).pipe(te("height"),v(s=>C(()=>{let p=[];return I([...o].reduce((c,[l,f])=>{for(;p.length&&o.get(p[p.length-1]).tagName>=f.tagName;)p.pop();let u=f.offsetTop;for(;!u&&f.parentElement;)f=f.parentElement,u=f.offsetTop;let d=f.offsetParent;for(;d;d=d.offsetParent)u+=d.offsetTop;return c.set([...p=[...p,l]].reverse(),u)},new Map))}).pipe(m(p=>new Map([...p].sort(([,c],[,l])=>c-l))),He(i),v(([p,c])=>t.pipe(Fr(([l,f],{offset:{y:u},size:d})=>{let y=u+d.height>=Math.floor(s.height);for(;f.length;){let[,L]=f[0];if(L-c<u||y)l=[...l,f.shift()];else break}for(;l.length;){let[,L]=l[l.length-1];if(L-c>=u&&!y)f=[l.pop(),...f];else break}return[l,f]},[[],[...p]]),K((l,f)=>l[0]===f[0]&&l[1]===f[1])))))).pipe(m(([s,p])=>({prev:s.map(([c])=>c),next:p.map(([c])=>c)})),Q({prev:[],next:[]}),Be(2,1),m(([s,p])=>s.prev.length<p.prev.length?{prev:p.prev.slice(Math.max(0,s.prev.length-1),p.prev.length),next:[]}:{prev:p.prev.slice(-1),next:p.next.slice(0,p.next.length-s.next.length)}))}function xi(e,{viewport$:t,header$:r,main$:o,target$:n}){return C(()=>{let i=new g,a=i.pipe(Z(),ie(!0));if(i.subscribe(({prev:s,next:p})=>{for(let[c]of p)c.classList.remove("md-nav__link--passed"),c.classList.remove("md-nav__link--active");for(let[c,[l]]of s.entries())l.classList.add("md-nav__link--passed"),l.classList.toggle("md-nav__link--active",c===s.length-1)}),B("toc.follow")){let s=O(t.pipe(_e(1),m(()=>{})),t.pipe(_e(250),m(()=>"smooth")));i.pipe(b(({prev:p})=>p.length>0),He(o.pipe(ve(se))),re(s)).subscribe(([[{prev:p}],c])=>{let[l]=p[p.length-1];if(l.offsetHeight){let f=cr(l);if(typeof f!="undefined"){let u=l.offsetTop-f.offsetTop,{height:d}=ce(f);f.scrollTo({top:u-d/2,behavior:c})}}})}return B("navigation.tracking")&&t.pipe(W(a),te("offset"),_e(250),Ce(1),W(n.pipe(Ce(1))),ct({delay:250}),re(i)).subscribe(([,{prev:s}])=>{let p=ye(),c=s[s.length-1];if(c&&c.length){let[l]=c,{hash:f}=new URL(l.href);p.hash!==f&&(p.hash=f,history.replaceState({},"",`${p}`))}else p.hash="",history.replaceState({},"",`${p}`)}),bs(e,{viewport$:t,header$:r}).pipe(w(s=>i.next(s)),_(()=>i.complete()),m(s=>$({ref:e},s)))})}function vs(e,{viewport$:t,main$:r,target$:o}){let n=t.pipe(m(({offset:{y:a}})=>a),Be(2,1),m(([a,s])=>a>s&&s>0),K()),i=r.pipe(m(({active:a})=>a));return z([i,n]).pipe(m(([a,s])=>!(a&&s)),K(),W(o.pipe(Ce(1))),ie(!0),ct({delay:250}),m(a=>({hidden:a})))}function Ei(e,{viewport$:t,header$:r,main$:o,target$:n}){let i=new g,a=i.pipe(Z(),ie(!0));return i.subscribe({next({hidden:s}){e.hidden=s,s?(e.setAttribute("tabindex","-1"),e.blur()):e.removeAttribute("tabindex")},complete(){e.style.top="",e.hidden=!0,e.removeAttribute("tabindex")}}),r.pipe(W(a),te("height")).subscribe(({height:s})=>{e.style.top=`${s+16}px`}),h(e,"click").subscribe(s=>{s.preventDefault(),window.scrollTo({top:0})}),vs(e,{viewport$:t,main$:o,target$:n}).pipe(w(s=>i.next(s)),_(()=>i.complete()),m(s=>$({ref:e},s)))}function wi({document$:e,viewport$:t}){e.pipe(v(()=>P(".md-ellipsis")),ne(r=>tt(r).pipe(W(e.pipe(Ce(1))),b(o=>o),m(()=>r),Te(1))),b(r=>r.offsetWidth<r.scrollWidth),ne(r=>{let o=r.innerText,n=r.closest("a")||r;return n.title=o,B("content.tooltips")?mt(n,{viewport$:t}).pipe(W(e.pipe(Ce(1))),_(()=>n.removeAttribute("title"))):S})).subscribe(),B("content.tooltips")&&e.pipe(v(()=>P(".md-status")),ne(r=>mt(r,{viewport$:t}))).subscribe()}function Ti({document$:e,tablet$:t}){e.pipe(v(()=>P(".md-toggle--indeterminate")),w(r=>{r.indeterminate=!0,r.checked=!1}),ne(r=>h(r,"change").pipe(Vr(()=>r.classList.contains("md-toggle--indeterminate")),m(()=>r))),re(t)).subscribe(([r,o])=>{r.classList.remove("md-toggle--indeterminate"),o&&(r.checked=!1)})}function gs(){return/(iPad|iPhone|iPod)/.test(navigator.userAgent)}function Si({document$:e}){e.pipe(v(()=>P("[data-md-scrollfix]")),w(t=>t.removeAttribute("data-md-scrollfix")),b(gs),ne(t=>h(t,"touchstart").pipe(m(()=>t)))).subscribe(t=>{let r=t.scrollTop;r===0?t.scrollTop=1:r+t.offsetHeight===t.scrollHeight&&(t.scrollTop=r-1)})}function Oi({viewport$:e,tablet$:t}){z([ze("search"),t]).pipe(m(([r,o])=>r&&!o),v(r=>I(r).pipe(Ge(r?400:100))),re(e)).subscribe(([r,{offset:{y:o}}])=>{if(r)document.body.setAttribute("data-md-scrolllock",""),document.body.style.top=`-${o}px`;else{let n=-1*parseInt(document.body.style.top,10);document.body.removeAttribute("data-md-scrolllock"),document.body.style.top="",n&&window.scrollTo(0,n)}})}Object.entries||(Object.entries=function(e){let t=[];for(let r of Object.keys(e))t.push([r,e[r]]);return t});Object.values||(Object.values=function(e){let t=[];for(let r of Object.keys(e))t.push(e[r]);return t});typeof Element!="undefined"&&(Element.prototype.scrollTo||(Element.prototype.scrollTo=function(e,t){typeof e=="object"?(this.scrollLeft=e.left,this.scrollTop=e.top):(this.scrollLeft=e,this.scrollTop=t)}),Element.prototype.replaceWith||(Element.prototype.replaceWith=function(...e){let t=this.parentNode;if(t){e.length===0&&t.removeChild(this);for(let r=e.length-1;r>=0;r--){let o=e[r];typeof o=="string"?o=document.createTextNode(o):o.parentNode&&o.parentNode.removeChild(o),r?t.insertBefore(this.previousSibling,o):t.replaceChild(o,this)}}}));function ys(){return location.protocol==="file:"?Tt(`${new URL("search/search_index.js",eo.base)}`).pipe(m(()=>__index),G(1)):je(new URL("search/search_index.json",eo.base))}document.documentElement.classList.remove("no-js");document.documentElement.classList.add("js");var ot=Go(),Ut=sn(),Lt=ln(Ut),to=an(),Oe=gn(),hr=Pt("(min-width: 960px)"),Mi=Pt("(min-width: 1220px)"),_i=mn(),eo=xe(),Ai=document.forms.namedItem("search")?ys():Ye,ro=new g;Zn({alert$:ro});var oo=new g;B("navigation.instant")&&oi({location$:Ut,viewport$:Oe,progress$:oo}).subscribe(ot);var Li;((Li=eo.version)==null?void 0:Li.provider)==="mike"&&ci({document$:ot});O(Ut,Lt).pipe(Ge(125)).subscribe(()=>{Je("drawer",!1),Je("search",!1)});to.pipe(b(({mode:e})=>e==="global")).subscribe(e=>{switch(e.type){case"p":case",":let t=fe("link[rel=prev]");typeof t!="undefined"&<(t);break;case"n":case".":let r=fe("link[rel=next]");typeof r!="undefined"&<(r);break;case"Enter":let o=Ie();o instanceof HTMLLabelElement&&o.click()}});wi({viewport$:Oe,document$:ot});Ti({document$:ot,tablet$:hr});Si({document$:ot});Oi({viewport$:Oe,tablet$:hr});var rt=Kn(Se("header"),{viewport$:Oe}),Ft=ot.pipe(m(()=>Se("main")),v(e=>Gn(e,{viewport$:Oe,header$:rt})),G(1)),xs=O(...ae("consent").map(e=>En(e,{target$:Lt})),...ae("dialog").map(e=>qn(e,{alert$:ro})),...ae("palette").map(e=>Jn(e)),...ae("progress").map(e=>Xn(e,{progress$:oo})),...ae("search").map(e=>ui(e,{index$:Ai,keyboard$:to})),...ae("source").map(e=>gi(e))),Es=C(()=>O(...ae("announce").map(e=>xn(e)),...ae("content").map(e=>zn(e,{viewport$:Oe,target$:Lt,print$:_i})),...ae("content").map(e=>B("search.highlight")?di(e,{index$:Ai,location$:Ut}):S),...ae("header").map(e=>Yn(e,{viewport$:Oe,header$:rt,main$:Ft})),...ae("header-title").map(e=>Bn(e,{viewport$:Oe,header$:rt})),...ae("sidebar").map(e=>e.getAttribute("data-md-type")==="navigation"?Nr(Mi,()=>Zr(e,{viewport$:Oe,header$:rt,main$:Ft})):Nr(hr,()=>Zr(e,{viewport$:Oe,header$:rt,main$:Ft}))),...ae("tabs").map(e=>yi(e,{viewport$:Oe,header$:rt})),...ae("toc").map(e=>xi(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Lt})),...ae("top").map(e=>Ei(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Lt})))),Ci=ot.pipe(v(()=>Es),Re(xs),G(1));Ci.subscribe();window.document$=ot;window.location$=Ut;window.target$=Lt;window.keyboard$=to;window.viewport$=Oe;window.tablet$=hr;window.screen$=Mi;window.print$=_i;window.alert$=ro;window.progress$=oo;window.component$=Ci;})();
+//# sourceMappingURL=bundle.f1b6f286.min.js.map
diff --git a/public/develop/assets/javascripts/bundle.60a45f97.min.js.map b/public/develop/assets/javascripts/bundle.f1b6f286.min.js.map
similarity index 81%
rename from public/develop/assets/javascripts/bundle.60a45f97.min.js.map
rename to public/develop/assets/javascripts/bundle.f1b6f286.min.js.map
index 7edbc6f43a96ce1bd8f0d8ae820d5633e1be9d68..2644bf105a896646bb66c25e9967321edb65b298 100644
--- a/public/develop/assets/javascripts/bundle.60a45f97.min.js.map
+++ b/public/develop/assets/javascripts/bundle.f1b6f286.min.js.map
@@ -1,7 +1,7 @@
{
"version": 3,
"sources": ["node_modules/focus-visible/dist/focus-visible.js", "node_modules/escape-html/index.js", "node_modules/clipboard/dist/clipboard.js", "src/templates/assets/javascripts/bundle.ts", "node_modules/tslib/tslib.es6.mjs", "node_modules/rxjs/src/internal/util/isFunction.ts", "node_modules/rxjs/src/internal/util/createErrorClass.ts", "node_modules/rxjs/src/internal/util/UnsubscriptionError.ts", "node_modules/rxjs/src/internal/util/arrRemove.ts", "node_modules/rxjs/src/internal/Subscription.ts", "node_modules/rxjs/src/internal/config.ts", "node_modules/rxjs/src/internal/scheduler/timeoutProvider.ts", "node_modules/rxjs/src/internal/util/reportUnhandledError.ts", "node_modules/rxjs/src/internal/util/noop.ts", "node_modules/rxjs/src/internal/NotificationFactories.ts", "node_modules/rxjs/src/internal/util/errorContext.ts", "node_modules/rxjs/src/internal/Subscriber.ts", "node_modules/rxjs/src/internal/symbol/observable.ts", "node_modules/rxjs/src/internal/util/identity.ts", "node_modules/rxjs/src/internal/util/pipe.ts", "node_modules/rxjs/src/internal/Observable.ts", "node_modules/rxjs/src/internal/util/lift.ts", "node_modules/rxjs/src/internal/operators/OperatorSubscriber.ts", "node_modules/rxjs/src/internal/scheduler/animationFrameProvider.ts", "node_modules/rxjs/src/internal/util/ObjectUnsubscribedError.ts", "node_modules/rxjs/src/internal/Subject.ts", "node_modules/rxjs/src/internal/BehaviorSubject.ts", "node_modules/rxjs/src/internal/scheduler/dateTimestampProvider.ts", "node_modules/rxjs/src/internal/ReplaySubject.ts", "node_modules/rxjs/src/internal/scheduler/Action.ts", "node_modules/rxjs/src/internal/scheduler/intervalProvider.ts", "node_modules/rxjs/src/internal/scheduler/AsyncAction.ts", "node_modules/rxjs/src/internal/Scheduler.ts", "node_modules/rxjs/src/internal/scheduler/AsyncScheduler.ts", "node_modules/rxjs/src/internal/scheduler/async.ts", "node_modules/rxjs/src/internal/scheduler/QueueAction.ts", "node_modules/rxjs/src/internal/scheduler/QueueScheduler.ts", "node_modules/rxjs/src/internal/scheduler/queue.ts", "node_modules/rxjs/src/internal/scheduler/AnimationFrameAction.ts", "node_modules/rxjs/src/internal/scheduler/AnimationFrameScheduler.ts", "node_modules/rxjs/src/internal/scheduler/animationFrame.ts", "node_modules/rxjs/src/internal/observable/empty.ts", "node_modules/rxjs/src/internal/util/isScheduler.ts", "node_modules/rxjs/src/internal/util/args.ts", "node_modules/rxjs/src/internal/util/isArrayLike.ts", "node_modules/rxjs/src/internal/util/isPromise.ts", "node_modules/rxjs/src/internal/util/isInteropObservable.ts", "node_modules/rxjs/src/internal/util/isAsyncIterable.ts", "node_modules/rxjs/src/internal/util/throwUnobservableError.ts", "node_modules/rxjs/src/internal/symbol/iterator.ts", "node_modules/rxjs/src/internal/util/isIterable.ts", "node_modules/rxjs/src/internal/util/isReadableStreamLike.ts", "node_modules/rxjs/src/internal/observable/innerFrom.ts", 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Otherwise, the modality is not keyboard.\n * Apply `focus-visible` to any current active element and keep track\n * of our keyboard modality state with `hadKeyboardEvent`.\n * @param {KeyboardEvent} e\n */\n function onKeyDown(e) {\n if (e.metaKey || e.altKey || e.ctrlKey) {\n return;\n }\n\n if (isValidFocusTarget(scope.activeElement)) {\n addFocusVisibleClass(scope.activeElement);\n }\n\n hadKeyboardEvent = true;\n }\n\n /**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n * @param {Event} e\n */\n function onPointerDown(e) {\n hadKeyboardEvent = false;\n }\n\n /**\n * On `focus`, add the `focus-visible` class to the target if:\n * - the target received focus as a result of keyboard navigation, or\n * - the event target is an element that will likely require interaction\n * via the keyboard (e.g. a text box)\n * @param {Event} e\n */\n function onFocus(e) {\n // Prevent IE from focusing the document or HTML element.\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (hadKeyboardEvent || focusTriggersKeyboardModality(e.target)) {\n addFocusVisibleClass(e.target);\n }\n }\n\n /**\n * On `blur`, remove the `focus-visible` class from the target.\n * @param {Event} e\n */\n function onBlur(e) {\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (\n e.target.classList.contains('focus-visible') ||\n e.target.hasAttribute('data-focus-visible-added')\n ) {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function() {\n hadFocusVisibleRecently = false;\n }, 100);\n removeFocusVisibleClass(e.target);\n }\n }\n\n /**\n * If the user changes tabs, keep track of whether or not the previously\n * focused element had .focus-visible.\n * @param {Event} e\n */\n function onVisibilityChange(e) {\n if (document.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n addInitialPointerMoveListeners();\n }\n }\n\n /**\n * Add a group of listeners to detect usage of any pointing devices.\n * These listeners will be added when the polyfill first loads, and anytime\n * the window is blurred, so that they are active when the window regains\n * focus.\n */\n function addInitialPointerMoveListeners() {\n document.addEventListener('mousemove', onInitialPointerMove);\n document.addEventListener('mousedown', onInitialPointerMove);\n document.addEventListener('mouseup', onInitialPointerMove);\n document.addEventListener('pointermove', onInitialPointerMove);\n document.addEventListener('pointerdown', onInitialPointerMove);\n document.addEventListener('pointerup', onInitialPointerMove);\n document.addEventListener('touchmove', onInitialPointerMove);\n document.addEventListener('touchstart', onInitialPointerMove);\n document.addEventListener('touchend', onInitialPointerMove);\n }\n\n function removeInitialPointerMoveListeners() {\n document.removeEventListener('mousemove', onInitialPointerMove);\n document.removeEventListener('mousedown', onInitialPointerMove);\n document.removeEventListener('mouseup', onInitialPointerMove);\n document.removeEventListener('pointermove', onInitialPointerMove);\n document.removeEventListener('pointerdown', onInitialPointerMove);\n document.removeEventListener('pointerup', onInitialPointerMove);\n document.removeEventListener('touchmove', onInitialPointerMove);\n document.removeEventListener('touchstart', onInitialPointerMove);\n document.removeEventListener('touchend', onInitialPointerMove);\n }\n\n /**\n * When the polfyill first loads, assume the user is in keyboard modality.\n * If any event is received from a pointing device (e.g. mouse, pointer,\n * touch), turn off keyboard modality.\n * This accounts for situations where focus enters the page from the URL bar.\n * @param {Event} e\n */\n function onInitialPointerMove(e) {\n // Work around a Safari quirk that fires a mousemove on <html> whenever the\n // window blurs, even if you're tabbing out of the page. \u00AF\\_(\u30C4)_/\u00AF\n if (e.target.nodeName && e.target.nodeName.toLowerCase() === 'html') {\n return;\n }\n\n hadKeyboardEvent = false;\n removeInitialPointerMoveListeners();\n }\n\n // For some kinds of state, we are interested in changes at the global scope\n // only. For example, global pointer input, global key presses and global\n // visibility change should affect the state at every scope:\n document.addEventListener('keydown', onKeyDown, true);\n document.addEventListener('mousedown', onPointerDown, true);\n document.addEventListener('pointerdown', onPointerDown, true);\n document.addEventListener('touchstart', onPointerDown, true);\n document.addEventListener('visibilitychange', onVisibilityChange, true);\n\n addInitialPointerMoveListeners();\n\n // For focus and blur, we specifically care about state changes in the local\n // scope. This is because focus / blur events that originate from within a\n // shadow root are not re-dispatched from the host element if it was already\n // the active element in its own scope:\n scope.addEventListener('focus', onFocus, true);\n scope.addEventListener('blur', onBlur, true);\n\n // We detect that a node is a ShadowRoot by ensuring that it is a\n // DocumentFragment and also has a host property. This check covers native\n // implementation and polyfill implementation transparently. If we only cared\n // about the native implementation, we could just check if the scope was\n // an instance of a ShadowRoot.\n if (scope.nodeType === Node.DOCUMENT_FRAGMENT_NODE && scope.host) {\n // Since a ShadowRoot is a special kind of DocumentFragment, it does not\n // have a root element to add a class to. So, we add this attribute to the\n // host element instead:\n scope.host.setAttribute('data-js-focus-visible', '');\n } else if (scope.nodeType === Node.DOCUMENT_NODE) {\n document.documentElement.classList.add('js-focus-visible');\n document.documentElement.setAttribute('data-js-focus-visible', '');\n }\n }\n\n // It is important to wrap all references to global window and document in\n // these checks to support server-side rendering use cases\n // @see https://github.com/WICG/focus-visible/issues/199\n if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n // Make the polyfill helper globally available. This can be used as a signal\n // to interested libraries that wish to coordinate with the polyfill for e.g.,\n // applying the polyfill to a shadow root:\n window.applyFocusVisiblePolyfill = applyFocusVisiblePolyfill;\n\n // Notify interested libraries of the polyfill's presence, in case the\n // polyfill was loaded lazily:\n var event;\n\n try {\n event = new CustomEvent('focus-visible-polyfill-ready');\n } catch (error) {\n // IE11 does not support using CustomEvent as a constructor directly:\n event = document.createEvent('CustomEvent');\n event.initCustomEvent('focus-visible-polyfill-ready', false, false, {});\n }\n\n window.dispatchEvent(event);\n }\n\n if (typeof document !== 'undefined') {\n // Apply the polyfill to the global document, so that no JavaScript\n // coordination is required to use the polyfill in the top-level document:\n applyFocusVisiblePolyfill(document);\n }\n\n})));\n", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "/*!\n * clipboard.js v2.0.11\n * https://clipboardjs.com/\n *\n * Licensed MIT \u00A9 Zeno Rocha\n */\n(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"ClipboardJS\"] = factory();\n\telse\n\t\troot[\"ClipboardJS\"] = factory();\n})(this, function() {\nreturn /******/ (function() { // webpackBootstrap\n/******/ \tvar __webpack_modules__ = ({\n\n/***/ 686:\n/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXPORTS\n__webpack_require__.d(__webpack_exports__, {\n \"default\": function() { return /* binding */ clipboard; }\n});\n\n// EXTERNAL MODULE: ./node_modules/tiny-emitter/index.js\nvar tiny_emitter = __webpack_require__(279);\nvar tiny_emitter_default = /*#__PURE__*/__webpack_require__.n(tiny_emitter);\n// EXTERNAL MODULE: ./node_modules/good-listener/src/listen.js\nvar listen = __webpack_require__(370);\nvar listen_default = /*#__PURE__*/__webpack_require__.n(listen);\n// EXTERNAL MODULE: ./node_modules/select/src/select.js\nvar src_select = __webpack_require__(817);\nvar select_default = /*#__PURE__*/__webpack_require__.n(src_select);\n;// CONCATENATED MODULE: ./src/common/command.js\n/**\n * Executes a given operation type.\n * @param {String} type\n * @return {Boolean}\n */\nfunction command(type) {\n try {\n return document.execCommand(type);\n } catch (err) {\n return false;\n }\n}\n;// CONCATENATED MODULE: ./src/actions/cut.js\n\n\n/**\n * Cut action wrapper.\n * @param {String|HTMLElement} target\n * @return {String}\n */\n\nvar ClipboardActionCut = function ClipboardActionCut(target) {\n var selectedText = select_default()(target);\n command('cut');\n return selectedText;\n};\n\n/* harmony default export */ var actions_cut = (ClipboardActionCut);\n;// CONCATENATED MODULE: ./src/common/create-fake-element.js\n/**\n * Creates a fake textarea element with a value.\n * @param {String} value\n * @return {HTMLElement}\n */\nfunction createFakeElement(value) {\n var isRTL = document.documentElement.getAttribute('dir') === 'rtl';\n var fakeElement = document.createElement('textarea'); // Prevent zooming on iOS\n\n fakeElement.style.fontSize = '12pt'; // Reset box model\n\n fakeElement.style.border = '0';\n fakeElement.style.padding = '0';\n fakeElement.style.margin = '0'; // Move element out of screen horizontally\n\n fakeElement.style.position = 'absolute';\n fakeElement.style[isRTL ? 'right' : 'left'] = '-9999px'; // Move element to the same position vertically\n\n var yPosition = window.pageYOffset || document.documentElement.scrollTop;\n fakeElement.style.top = \"\".concat(yPosition, \"px\");\n fakeElement.setAttribute('readonly', '');\n fakeElement.value = value;\n return fakeElement;\n}\n;// CONCATENATED MODULE: ./src/actions/copy.js\n\n\n\n/**\n * Create fake copy action wrapper using a fake element.\n * @param {String} target\n * @param {Object} options\n * @return {String}\n */\n\nvar fakeCopyAction = function fakeCopyAction(value, options) {\n var fakeElement = createFakeElement(value);\n options.container.appendChild(fakeElement);\n var selectedText = select_default()(fakeElement);\n command('copy');\n fakeElement.remove();\n return selectedText;\n};\n/**\n * Copy action wrapper.\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @return {String}\n */\n\n\nvar ClipboardActionCopy = function ClipboardActionCopy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n var selectedText = '';\n\n if (typeof target === 'string') {\n selectedText = fakeCopyAction(target, options);\n } else if (target instanceof HTMLInputElement && !['text', 'search', 'url', 'tel', 'password'].includes(target === null || target === void 0 ? void 0 : target.type)) {\n // If input type doesn't support `setSelectionRange`. Simulate it. https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/setSelectionRange\n selectedText = fakeCopyAction(target.value, options);\n } else {\n selectedText = select_default()(target);\n command('copy');\n }\n\n return selectedText;\n};\n\n/* harmony default export */ var actions_copy = (ClipboardActionCopy);\n;// CONCATENATED MODULE: ./src/actions/default.js\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n\n\n/**\n * Inner function which performs selection from either `text` or `target`\n * properties and then executes copy or cut operations.\n * @param {Object} options\n */\n\nvar ClipboardActionDefault = function ClipboardActionDefault() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // Defines base properties passed from constructor.\n var _options$action = options.action,\n action = _options$action === void 0 ? 'copy' : _options$action,\n container = options.container,\n target = options.target,\n text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.\n\n if (action !== 'copy' && action !== 'cut') {\n throw new Error('Invalid \"action\" value, use either \"copy\" or \"cut\"');\n } // Sets the `target` property using an element that will be have its content copied.\n\n\n if (target !== undefined) {\n if (target && _typeof(target) === 'object' && target.nodeType === 1) {\n if (action === 'copy' && target.hasAttribute('disabled')) {\n throw new Error('Invalid \"target\" attribute. Please use \"readonly\" instead of \"disabled\" attribute');\n }\n\n if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {\n throw new Error('Invalid \"target\" attribute. You can\\'t cut text from elements with \"readonly\" or \"disabled\" attributes');\n }\n } else {\n throw new Error('Invalid \"target\" value, use a valid Element');\n }\n } // Define selection strategy based on `text` property.\n\n\n if (text) {\n return actions_copy(text, {\n container: container\n });\n } // Defines which selection strategy based on `target` property.\n\n\n if (target) {\n return action === 'cut' ? actions_cut(target) : actions_copy(target, {\n container: container\n });\n }\n};\n\n/* harmony default export */ var actions_default = (ClipboardActionDefault);\n;// CONCATENATED MODULE: ./src/clipboard.js\nfunction clipboard_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { clipboard_typeof = function _typeof(obj) { return typeof obj; }; } else { clipboard_typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return clipboard_typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (clipboard_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n\n\n\n\n\n/**\n * Helper function to retrieve attribute value.\n * @param {String} suffix\n * @param {Element} element\n */\n\nfunction getAttributeValue(suffix, element) {\n var attribute = \"data-clipboard-\".concat(suffix);\n\n if (!element.hasAttribute(attribute)) {\n return;\n }\n\n return element.getAttribute(attribute);\n}\n/**\n * Base class which takes one or more elements, adds event listeners to them,\n * and instantiates a new `ClipboardAction` on each click.\n */\n\n\nvar Clipboard = /*#__PURE__*/function (_Emitter) {\n _inherits(Clipboard, _Emitter);\n\n var _super = _createSuper(Clipboard);\n\n /**\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n * @param {Object} options\n */\n function Clipboard(trigger, options) {\n var _this;\n\n _classCallCheck(this, Clipboard);\n\n _this = _super.call(this);\n\n _this.resolveOptions(options);\n\n _this.listenClick(trigger);\n\n return _this;\n }\n /**\n * Defines if attributes would be resolved using internal setter functions\n * or custom functions that were passed in the constructor.\n * @param {Object} options\n */\n\n\n _createClass(Clipboard, [{\n key: \"resolveOptions\",\n value: function resolveOptions() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n this.action = typeof options.action === 'function' ? options.action : this.defaultAction;\n this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;\n this.text = typeof options.text === 'function' ? options.text : this.defaultText;\n this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;\n }\n /**\n * Adds a click event listener to the passed trigger.\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n */\n\n }, {\n key: \"listenClick\",\n value: function listenClick(trigger) {\n var _this2 = this;\n\n this.listener = listen_default()(trigger, 'click', function (e) {\n return _this2.onClick(e);\n });\n }\n /**\n * Defines a new `ClipboardAction` on each click event.\n * @param {Event} e\n */\n\n }, {\n key: \"onClick\",\n value: function onClick(e) {\n var trigger = e.delegateTarget || e.currentTarget;\n var action = this.action(trigger) || 'copy';\n var text = actions_default({\n action: action,\n container: this.container,\n target: this.target(trigger),\n text: this.text(trigger)\n }); // Fires an event based on the copy operation result.\n\n this.emit(text ? 'success' : 'error', {\n action: action,\n text: text,\n trigger: trigger,\n clearSelection: function clearSelection() {\n if (trigger) {\n trigger.focus();\n }\n\n window.getSelection().removeAllRanges();\n }\n });\n }\n /**\n * Default `action` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultAction\",\n value: function defaultAction(trigger) {\n return getAttributeValue('action', trigger);\n }\n /**\n * Default `target` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultTarget\",\n value: function defaultTarget(trigger) {\n var selector = getAttributeValue('target', trigger);\n\n if (selector) {\n return document.querySelector(selector);\n }\n }\n /**\n * Allow fire programmatically a copy action\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @returns Text copied.\n */\n\n }, {\n key: \"defaultText\",\n\n /**\n * Default `text` lookup function.\n * @param {Element} trigger\n */\n value: function defaultText(trigger) {\n return getAttributeValue('text', trigger);\n }\n /**\n * Destroy lifecycle.\n */\n\n }, {\n key: \"destroy\",\n value: function destroy() {\n this.listener.destroy();\n }\n }], [{\n key: \"copy\",\n value: function copy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n return actions_copy(target, options);\n }\n /**\n * Allow fire programmatically a cut action\n * @param {String|HTMLElement} target\n * @returns Text cutted.\n */\n\n }, {\n key: \"cut\",\n value: function cut(target) {\n return actions_cut(target);\n }\n /**\n * Returns the support of the given action, or all actions if no action is\n * given.\n * @param {String} [action]\n */\n\n }, {\n key: \"isSupported\",\n value: function isSupported() {\n var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];\n var actions = typeof action === 'string' ? [action] : action;\n var support = !!document.queryCommandSupported;\n actions.forEach(function (action) {\n support = support && !!document.queryCommandSupported(action);\n });\n return support;\n }\n }]);\n\n return Clipboard;\n}((tiny_emitter_default()));\n\n/* harmony default export */ var clipboard = (Clipboard);\n\n/***/ }),\n\n/***/ 828:\n/***/ (function(module) {\n\nvar DOCUMENT_NODE_TYPE = 9;\n\n/**\n * A polyfill for Element.matches()\n */\nif (typeof Element !== 'undefined' && !Element.prototype.matches) {\n var proto = Element.prototype;\n\n proto.matches = proto.matchesSelector ||\n proto.mozMatchesSelector ||\n proto.msMatchesSelector ||\n proto.oMatchesSelector ||\n proto.webkitMatchesSelector;\n}\n\n/**\n * Finds the closest parent that matches a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @return {Function}\n */\nfunction closest (element, selector) {\n while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {\n if (typeof element.matches === 'function' &&\n element.matches(selector)) {\n return element;\n }\n element = element.parentNode;\n }\n}\n\nmodule.exports = closest;\n\n\n/***/ }),\n\n/***/ 438:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar closest = __webpack_require__(828);\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction _delegate(element, selector, type, callback, useCapture) {\n var listenerFn = listener.apply(this, arguments);\n\n element.addEventListener(type, listenerFn, useCapture);\n\n return {\n destroy: function() {\n element.removeEventListener(type, listenerFn, useCapture);\n }\n }\n}\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element|String|Array} [elements]\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction delegate(elements, selector, type, callback, useCapture) {\n // Handle the regular Element usage\n if (typeof elements.addEventListener === 'function') {\n return _delegate.apply(null, arguments);\n }\n\n // Handle Element-less usage, it defaults to global delegation\n if (typeof type === 'function') {\n // Use `document` as the first parameter, then apply arguments\n // This is a short way to .unshift `arguments` without running into deoptimizations\n return _delegate.bind(null, document).apply(null, arguments);\n }\n\n // Handle Selector-based usage\n if (typeof elements === 'string') {\n elements = document.querySelectorAll(elements);\n }\n\n // Handle Array-like based usage\n return Array.prototype.map.call(elements, function (element) {\n return _delegate(element, selector, type, callback, useCapture);\n });\n}\n\n/**\n * Finds closest match and invokes callback.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Function}\n */\nfunction listener(element, selector, type, callback) {\n return function(e) {\n e.delegateTarget = closest(e.target, selector);\n\n if (e.delegateTarget) {\n callback.call(element, e);\n }\n }\n}\n\nmodule.exports = delegate;\n\n\n/***/ }),\n\n/***/ 879:\n/***/ (function(__unused_webpack_module, exports) {\n\n/**\n * Check if argument is a HTML element.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.node = function(value) {\n return value !== undefined\n && value instanceof HTMLElement\n && value.nodeType === 1;\n};\n\n/**\n * Check if argument is a list of HTML elements.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.nodeList = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return value !== undefined\n && (type === '[object NodeList]' || type === '[object HTMLCollection]')\n && ('length' in value)\n && (value.length === 0 || exports.node(value[0]));\n};\n\n/**\n * Check if argument is a string.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.string = function(value) {\n return typeof value === 'string'\n || value instanceof String;\n};\n\n/**\n * Check if argument is a function.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.fn = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return type === '[object Function]';\n};\n\n\n/***/ }),\n\n/***/ 370:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar is = __webpack_require__(879);\nvar delegate = __webpack_require__(438);\n\n/**\n * Validates all params and calls the right\n * listener function based on its target type.\n *\n * @param {String|HTMLElement|HTMLCollection|NodeList} target\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listen(target, type, callback) {\n if (!target && !type && !callback) {\n throw new Error('Missing required arguments');\n }\n\n if (!is.string(type)) {\n throw new TypeError('Second argument must be a String');\n }\n\n if (!is.fn(callback)) {\n throw new TypeError('Third argument must be a Function');\n }\n\n if (is.node(target)) {\n return listenNode(target, type, callback);\n }\n else if (is.nodeList(target)) {\n return listenNodeList(target, type, callback);\n }\n else if (is.string(target)) {\n return listenSelector(target, type, callback);\n }\n else {\n throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');\n }\n}\n\n/**\n * Adds an event listener to a HTML element\n * and returns a remove listener function.\n *\n * @param {HTMLElement} node\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNode(node, type, callback) {\n node.addEventListener(type, callback);\n\n return {\n destroy: function() {\n node.removeEventListener(type, callback);\n }\n }\n}\n\n/**\n * Add an event listener to a list of HTML elements\n * and returns a remove listener function.\n *\n * @param {NodeList|HTMLCollection} nodeList\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNodeList(nodeList, type, callback) {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.addEventListener(type, callback);\n });\n\n return {\n destroy: function() {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.removeEventListener(type, callback);\n });\n }\n }\n}\n\n/**\n * Add an event listener to a selector\n * and returns a remove listener function.\n *\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenSelector(selector, type, callback) {\n return delegate(document.body, selector, type, callback);\n}\n\nmodule.exports = listen;\n\n\n/***/ }),\n\n/***/ 817:\n/***/ (function(module) {\n\nfunction select(element) {\n var selectedText;\n\n if (element.nodeName === 'SELECT') {\n element.focus();\n\n selectedText = element.value;\n }\n else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {\n var isReadOnly = element.hasAttribute('readonly');\n\n if (!isReadOnly) {\n element.setAttribute('readonly', '');\n }\n\n element.select();\n element.setSelectionRange(0, element.value.length);\n\n if (!isReadOnly) {\n element.removeAttribute('readonly');\n }\n\n selectedText = element.value;\n }\n else {\n if (element.hasAttribute('contenteditable')) {\n element.focus();\n }\n\n var selection = window.getSelection();\n var range = document.createRange();\n\n range.selectNodeContents(element);\n selection.removeAllRanges();\n selection.addRange(range);\n\n selectedText = selection.toString();\n }\n\n return selectedText;\n}\n\nmodule.exports = select;\n\n\n/***/ }),\n\n/***/ 279:\n/***/ (function(module) {\n\nfunction E () {\n // Keep this empty so it's easier to inherit from\n // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n on: function (name, callback, ctx) {\n var e = this.e || (this.e = {});\n\n (e[name] || (e[name] = [])).push({\n fn: callback,\n ctx: ctx\n });\n\n return this;\n },\n\n once: function (name, callback, ctx) {\n var self = this;\n function listener () {\n self.off(name, listener);\n callback.apply(ctx, arguments);\n };\n\n listener._ = callback\n return this.on(name, listener, ctx);\n },\n\n emit: function (name) {\n var data = [].slice.call(arguments, 1);\n var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n var i = 0;\n var len = evtArr.length;\n\n for (i; i < len; i++) {\n evtArr[i].fn.apply(evtArr[i].ctx, data);\n }\n\n return this;\n },\n\n off: function (name, callback) {\n var e = this.e || (this.e = {});\n var evts = e[name];\n var liveEvents = [];\n\n if (evts && callback) {\n for (var i = 0, len = evts.length; i < len; i++) {\n if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n liveEvents.push(evts[i]);\n }\n }\n\n // Remove event from queue to prevent memory leak\n // Suggested by https://github.com/lazd\n // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n (liveEvents.length)\n ? e[name] = liveEvents\n : delete e[name];\n\n return this;\n }\n};\n\nmodule.exports = E;\nmodule.exports.TinyEmitter = E;\n\n\n/***/ })\n\n/******/ \t});\n/************************************************************************/\n/******/ \t// The module cache\n/******/ \tvar __webpack_module_cache__ = {};\n/******/ \t\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(__webpack_module_cache__[moduleId]) {\n/******/ \t\t\treturn __webpack_module_cache__[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = __webpack_module_cache__[moduleId] = {\n/******/ \t\t\t// no module.id needed\n/******/ \t\t\t// no module.loaded needed\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/ \t\n/******/ \t\t// Execute the module function\n/******/ \t\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n/******/ \t\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/ \t\n/************************************************************************/\n/******/ \t/* webpack/runtime/compat get default export */\n/******/ \t!function() {\n/******/ \t\t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t\t__webpack_require__.n = function(module) {\n/******/ \t\t\tvar getter = module && module.__esModule ?\n/******/ \t\t\t\tfunction() { return module['default']; } :\n/******/ \t\t\t\tfunction() { return module; };\n/******/ \t\t\t__webpack_require__.d(getter, { a: getter });\n/******/ \t\t\treturn getter;\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/define property getters */\n/******/ \t!function() {\n/******/ \t\t// define getter functions for harmony exports\n/******/ \t\t__webpack_require__.d = function(exports, definition) {\n/******/ \t\t\tfor(var key in definition) {\n/******/ \t\t\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n/******/ \t\t\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n/******/ \t\t\t\t}\n/******/ \t\t\t}\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/hasOwnProperty shorthand */\n/******/ \t!function() {\n/******/ \t\t__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }\n/******/ \t}();\n/******/ \t\n/************************************************************************/\n/******/ \t// module exports must be returned from runtime so entry inlining is disabled\n/******/ \t// startup\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(686);\n/******/ })()\n.default;\n});", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport \"focus-visible\"\n\nimport {\n EMPTY,\n NEVER,\n Observable,\n Subject,\n defer,\n delay,\n filter,\n map,\n merge,\n mergeWith,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"./_\"\nimport {\n at,\n getActiveElement,\n getOptionalElement,\n requestJSON,\n setLocation,\n setToggle,\n watchDocument,\n watchKeyboard,\n watchLocation,\n watchLocationTarget,\n watchMedia,\n watchPrint,\n watchScript,\n watchViewport\n} from \"./browser\"\nimport {\n getComponentElement,\n getComponentElements,\n mountAnnounce,\n mountBackToTop,\n mountConsent,\n mountContent,\n mountDialog,\n mountHeader,\n mountHeaderTitle,\n mountPalette,\n mountProgress,\n mountSearch,\n mountSearchHiglight,\n mountSidebar,\n mountSource,\n mountTableOfContents,\n mountTabs,\n watchHeader,\n watchMain\n} from \"./components\"\nimport {\n SearchIndex,\n setupClipboardJS,\n setupInstantNavigation,\n setupVersionSelector\n} from \"./integrations\"\nimport {\n patchEllipsis,\n patchIndeterminate,\n patchScrollfix,\n patchScrolllock\n} from \"./patches\"\nimport \"./polyfills\"\n\n/* ----------------------------------------------------------------------------\n * Functions - @todo refactor\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch search index\n *\n * @returns Search index observable\n */\nfunction fetchSearchIndex(): Observable<SearchIndex> {\n if (location.protocol === \"file:\") {\n return watchScript(\n `${new URL(\"search/search_index.js\", config.base)}`\n )\n .pipe(\n // @ts-ignore - @todo fix typings\n map(() => __index),\n shareReplay(1)\n )\n } else {\n return requestJSON<SearchIndex>(\n new URL(\"search/search_index.json\", config.base)\n )\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Application\n * ------------------------------------------------------------------------- */\n\n/* Yay, JavaScript is available */\ndocument.documentElement.classList.remove(\"no-js\")\ndocument.documentElement.classList.add(\"js\")\n\n/* Set up navigation observables and subjects */\nconst document$ = watchDocument()\nconst location$ = watchLocation()\nconst target$ = watchLocationTarget(location$)\nconst keyboard$ = watchKeyboard()\n\n/* Set up media observables */\nconst viewport$ = watchViewport()\nconst tablet$ = watchMedia(\"(min-width: 960px)\")\nconst screen$ = watchMedia(\"(min-width: 1220px)\")\nconst print$ = watchPrint()\n\n/* Retrieve search index, if search is enabled */\nconst config = configuration()\nconst index$ = document.forms.namedItem(\"search\")\n ? fetchSearchIndex()\n : NEVER\n\n/* Set up Clipboard.js integration */\nconst alert$ = new Subject<string>()\nsetupClipboardJS({ alert$ })\n\n/* Set up progress indicator */\nconst progress$ = new Subject<number>()\n\n/* Set up instant navigation, if enabled */\nif (feature(\"navigation.instant\"))\n setupInstantNavigation({ location$, viewport$, progress$ })\n .subscribe(document$)\n\n/* Set up version selector */\nif (config.version?.provider === \"mike\")\n setupVersionSelector({ document$ })\n\n/* Always close drawer and search on navigation */\nmerge(location$, target$)\n .pipe(\n delay(125)\n )\n .subscribe(() => {\n setToggle(\"drawer\", false)\n setToggle(\"search\", false)\n })\n\n/* Set up global keyboard handlers */\nkeyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Go to previous page */\n case \"p\":\n case \",\":\n const prev = getOptionalElement<HTMLLinkElement>(\"link[rel=prev]\")\n if (typeof prev !== \"undefined\")\n setLocation(prev)\n break\n\n /* Go to next page */\n case \"n\":\n case \".\":\n const next = getOptionalElement<HTMLLinkElement>(\"link[rel=next]\")\n if (typeof next !== \"undefined\")\n setLocation(next)\n break\n\n /* Expand navigation, see https://bit.ly/3ZjG5io */\n case \"Enter\":\n const active = getActiveElement()\n if (active instanceof HTMLLabelElement)\n active.click()\n }\n })\n\n/* Set up patches */\npatchEllipsis({ viewport$, document$ })\npatchIndeterminate({ document$, tablet$ })\npatchScrollfix({ document$ })\npatchScrolllock({ viewport$, tablet$ })\n\n/* Set up header and main area observable */\nconst header$ = watchHeader(getComponentElement(\"header\"), { viewport$ })\nconst main$ = document$\n .pipe(\n map(() => getComponentElement(\"main\")),\n switchMap(el => watchMain(el, { viewport$, header$ })),\n shareReplay(1)\n )\n\n/* Set up control component observables */\nconst control$ = merge(\n\n /* Consent */\n ...getComponentElements(\"consent\")\n .map(el => mountConsent(el, { target$ })),\n\n /* Dialog */\n ...getComponentElements(\"dialog\")\n .map(el => mountDialog(el, { alert$ })),\n\n /* Color palette */\n ...getComponentElements(\"palette\")\n .map(el => mountPalette(el)),\n\n /* Progress bar */\n ...getComponentElements(\"progress\")\n .map(el => mountProgress(el, { progress$ })),\n\n /* Search */\n ...getComponentElements(\"search\")\n .map(el => mountSearch(el, { index$, keyboard$ })),\n\n /* Repository information */\n ...getComponentElements(\"source\")\n .map(el => mountSource(el))\n)\n\n/* Set up content component observables */\nconst content$ = defer(() => merge(\n\n /* Announcement bar */\n ...getComponentElements(\"announce\")\n .map(el => mountAnnounce(el)),\n\n /* Content */\n ...getComponentElements(\"content\")\n .map(el => mountContent(el, { viewport$, target$, print$ })),\n\n /* Search highlighting */\n ...getComponentElements(\"content\")\n .map(el => feature(\"search.highlight\")\n ? mountSearchHiglight(el, { index$, location$ })\n : EMPTY\n ),\n\n /* Header */\n ...getComponentElements(\"header\")\n .map(el => mountHeader(el, { viewport$, header$, main$ })),\n\n /* Header title */\n ...getComponentElements(\"header-title\")\n .map(el => mountHeaderTitle(el, { viewport$, header$ })),\n\n /* Sidebar */\n ...getComponentElements(\"sidebar\")\n .map(el => el.getAttribute(\"data-md-type\") === \"navigation\"\n ? at(screen$, () => mountSidebar(el, { viewport$, header$, main$ }))\n : at(tablet$, () => mountSidebar(el, { viewport$, header$, main$ }))\n ),\n\n /* Navigation tabs */\n ...getComponentElements(\"tabs\")\n .map(el => mountTabs(el, { viewport$, header$ })),\n\n /* Table of contents */\n ...getComponentElements(\"toc\")\n .map(el => mountTableOfContents(el, {\n viewport$, header$, main$, target$\n })),\n\n /* Back-to-top button */\n ...getComponentElements(\"top\")\n .map(el => mountBackToTop(el, { viewport$, header$, main$, target$ }))\n))\n\n/* Set up component observables */\nconst component$ = document$\n .pipe(\n switchMap(() => content$),\n mergeWith(control$),\n shareReplay(1)\n )\n\n/* Subscribe to all components */\ncomponent$.subscribe()\n\n/* ----------------------------------------------------------------------------\n * Exports\n * ------------------------------------------------------------------------- */\n\nwindow.document$ = document$ /* Document observable */\nwindow.location$ = location$ /* Location subject */\nwindow.target$ = target$ /* Location target observable */\nwindow.keyboard$ = keyboard$ /* Keyboard observable */\nwindow.viewport$ = viewport$ /* Viewport observable */\nwindow.tablet$ = tablet$ /* Media tablet observable */\nwindow.screen$ = screen$ /* Media screen observable */\nwindow.print$ = print$ /* Media print observable */\nwindow.alert$ = alert$ /* Alert subject */\nwindow.progress$ = progress$ /* Progress indicator subject */\nwindow.component$ = component$ /* Component observable */\n", "/******************************************************************************\nCopyright (c) Microsoft Corporation.\n\nPermission to use, copy, modify, and/or distribute this software for any\npurpose with or without fee is hereby granted.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\nPERFORMANCE OF THIS SOFTWARE.\n***************************************************************************** */\n/* global Reflect, Promise, SuppressedError, Symbol, Iterator */\n\nvar extendStatics = function(d, b) {\n extendStatics = Object.setPrototypeOf ||\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\n return extendStatics(d, b);\n};\n\nexport function __extends(d, b) {\n if (typeof b !== \"function\" && b !== null)\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n extendStatics(d, b);\n function __() { this.constructor = d; }\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\n\nexport var __assign = function() {\n __assign = Object.assign || function __assign(t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n }\n return __assign.apply(this, arguments);\n}\n\nexport function __rest(s, e) {\n var t = {};\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\n t[p] = s[p];\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\n t[p[i]] = s[p[i]];\n }\n return t;\n}\n\nexport function __decorate(decorators, target, key, desc) {\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n return c > 3 && r && Object.defineProperty(target, key, r), r;\n}\n\nexport function __param(paramIndex, decorator) {\n return function (target, key) { decorator(target, key, paramIndex); }\n}\n\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\n var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});\n var _, done = false;\n for (var i = decorators.length - 1; i >= 0; i--) {\n var context = {};\n for (var p in contextIn) context[p] = p === \"access\" ? {} : contextIn[p];\n for (var p in contextIn.access) context.access[p] = contextIn.access[p];\n context.addInitializer = function (f) { if (done) throw new TypeError(\"Cannot add initializers after decoration has completed\"); extraInitializers.push(accept(f || null)); };\n var result = (0, decorators[i])(kind === \"accessor\" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);\n if (kind === \"accessor\") {\n if (result === void 0) continue;\n if (result === null || typeof result !== \"object\") throw new TypeError(\"Object expected\");\n if (_ = accept(result.get)) descriptor.get = _;\n if (_ = accept(result.set)) descriptor.set = _;\n if (_ = accept(result.init)) initializers.unshift(_);\n }\n else if (_ = accept(result)) {\n if (kind === \"field\") initializers.unshift(_);\n else descriptor[key] = _;\n }\n }\n if (target) Object.defineProperty(target, contextIn.name, descriptor);\n done = true;\n};\n\nexport function __runInitializers(thisArg, initializers, value) {\n var useValue = arguments.length > 2;\n for (var i = 0; i < initializers.length; i++) {\n value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);\n }\n return useValue ? value : void 0;\n};\n\nexport function __propKey(x) {\n return typeof x === \"symbol\" ? x : \"\".concat(x);\n};\n\nexport function __setFunctionName(f, name, prefix) {\n if (typeof name === \"symbol\") name = name.description ? \"[\".concat(name.description, \"]\") : \"\";\n return Object.defineProperty(f, \"name\", { configurable: true, value: prefix ? \"\".concat(prefix, \" \", name) : name });\n};\n\nexport function __metadata(metadataKey, metadataValue) {\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\n}\n\nexport function __awaiter(thisArg, _arguments, P, generator) {\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\n return new (P || (P = Promise))(function (resolve, reject) {\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\n step((generator = generator.apply(thisArg, _arguments || [])).next());\n });\n}\n\nexport function __generator(thisArg, body) {\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === \"function\" ? Iterator : Object).prototype);\n return g.next = verb(0), g[\"throw\"] = verb(1), g[\"return\"] = verb(2), typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\n function verb(n) { return function (v) { return step([n, v]); }; }\n function step(op) {\n if (f) throw new TypeError(\"Generator is already executing.\");\n while (g && (g = 0, op[0] && (_ = 0)), _) try {\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\n if (y = 0, t) op = [op[0] & 2, t.value];\n switch (op[0]) {\n case 0: case 1: t = op; break;\n case 4: _.label++; return { value: op[1], done: false };\n case 5: _.label++; y = op[1]; op = [0]; continue;\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\n default:\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\n if (t[2]) _.ops.pop();\n _.trys.pop(); continue;\n }\n op = body.call(thisArg, _);\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\n }\n}\n\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n var desc = Object.getOwnPropertyDescriptor(m, k);\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\n desc = { enumerable: true, get: function() { return m[k]; } };\n }\n Object.defineProperty(o, k2, desc);\n}) : (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n o[k2] = m[k];\n});\n\nexport function __exportStar(m, o) {\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\n}\n\nexport function __values(o) {\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\n if (m) return m.call(o);\n if (o && typeof o.length === \"number\") return {\n next: function () {\n if (o && i >= o.length) o = void 0;\n return { value: o && o[i++], done: !o };\n }\n };\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\n\nexport function __read(o, n) {\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n if (!m) return o;\n var i = m.call(o), r, ar = [], e;\n try {\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\n }\n catch (error) { e = { error: error }; }\n finally {\n try {\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\n }\n finally { if (e) throw e.error; }\n }\n return ar;\n}\n\n/** @deprecated */\nexport function __spread() {\n for (var ar = [], i = 0; i < arguments.length; i++)\n ar = ar.concat(__read(arguments[i]));\n return ar;\n}\n\n/** @deprecated */\nexport function __spreadArrays() {\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\n r[k] = a[j];\n return r;\n}\n\nexport function __spreadArray(to, from, pack) {\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\n if (ar || !(i in from)) {\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\n ar[i] = from[i];\n }\n }\n return to.concat(ar || Array.prototype.slice.call(from));\n}\n\nexport function __await(v) {\n return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\n\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\n return i = Object.create((typeof AsyncIterator === \"function\" ? AsyncIterator : Object).prototype), verb(\"next\"), verb(\"throw\"), verb(\"return\", awaitReturn), i[Symbol.asyncIterator] = function () { return this; }, i;\n function awaitReturn(f) { return function (v) { return Promise.resolve(v).then(f, reject); }; }\n function verb(n, f) { if (g[n]) { i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; if (f) i[n] = f(i[n]); } }\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\n function fulfill(value) { resume(\"next\", value); }\n function reject(value) { resume(\"throw\", value); }\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\n}\n\nexport function __asyncDelegator(o) {\n var i, p;\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\n}\n\nexport function __asyncValues(o) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var m = o[Symbol.asyncIterator], i;\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\n}\n\nexport function __makeTemplateObject(cooked, raw) {\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\n return cooked;\n};\n\nvar __setModuleDefault = Object.create ? (function(o, v) {\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n o[\"default\"] = v;\n};\n\nexport function __importStar(mod) {\n if (mod && mod.__esModule) return mod;\n var result = {};\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n __setModuleDefault(result, mod);\n return result;\n}\n\nexport function __importDefault(mod) {\n return (mod && mod.__esModule) ? mod : { default: mod };\n}\n\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\n}\n\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\n}\n\nexport function __classPrivateFieldIn(state, receiver) {\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\n}\n\nexport function __addDisposableResource(env, value, async) {\n if (value !== null && value !== void 0) {\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\n var dispose, inner;\n if (async) {\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\n dispose = value[Symbol.asyncDispose];\n }\n if (dispose === void 0) {\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\n dispose = value[Symbol.dispose];\n if (async) inner = dispose;\n }\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\n if (inner) dispose = function() { try { inner.call(this); } catch (e) { return Promise.reject(e); } };\n env.stack.push({ value: value, dispose: dispose, async: async });\n }\n else if (async) {\n env.stack.push({ async: true });\n }\n return value;\n}\n\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\n var e = new Error(message);\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\n};\n\nexport function __disposeResources(env) {\n function fail(e) {\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\n env.hasError = true;\n }\n var r, s = 0;\n function next() {\n while (r = env.stack.pop()) {\n try {\n if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);\n if (r.dispose) {\n var result = r.dispose.call(r.value);\n if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\n }\n else s |= 1;\n }\n catch (e) {\n fail(e);\n }\n }\n if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();\n if (env.hasError) throw env.error;\n }\n return next();\n}\n\nexport default {\n __extends,\n __assign,\n __rest,\n __decorate,\n __param,\n __metadata,\n __awaiter,\n __generator,\n __createBinding,\n __exportStar,\n __values,\n __read,\n __spread,\n __spreadArrays,\n __spreadArray,\n __await,\n __asyncGenerator,\n __asyncDelegator,\n __asyncValues,\n __makeTemplateObject,\n __importStar,\n __importDefault,\n __classPrivateFieldGet,\n __classPrivateFieldSet,\n __classPrivateFieldIn,\n __addDisposableResource,\n __disposeResources,\n};\n", "/**\n * Returns true if the object is a function.\n * @param value The value to check\n */\nexport function isFunction(value: any): value is (...args: any[]) => any {\n return typeof value === 'function';\n}\n", "/**\n * Used to create Error subclasses until the community moves away from ES5.\n *\n * This is because compiling from TypeScript down to ES5 has issues with subclassing Errors\n * as well as other built-in types: https://github.com/Microsoft/TypeScript/issues/12123\n *\n * @param createImpl A factory function to create the actual constructor implementation. The returned\n * function should be a named function that calls `_super` internally.\n */\nexport function createErrorClass<T>(createImpl: (_super: any) => any): T {\n const _super = (instance: any) => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface UnsubscriptionError extends Error {\n readonly errors: any[];\n}\n\nexport interface UnsubscriptionErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (errors: any[]): UnsubscriptionError;\n}\n\n/**\n * An error thrown when one or more errors have occurred during the\n * `unsubscribe` of a {@link Subscription}.\n */\nexport const UnsubscriptionError: UnsubscriptionErrorCtor = createErrorClass(\n (_super) =>\n function UnsubscriptionErrorImpl(this: any, errors: (Error | string)[]) {\n _super(this);\n this.message = errors\n ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}`\n : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n }\n);\n", "/**\n * Removes an item from an array, mutating it.\n * @param arr The array to remove the item from\n * @param item The item to remove\n */\nexport function arrRemove<T>(arr: T[] | undefined | null, item: T) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { SubscriptionLike, TeardownLogic, Unsubscribable } from './types';\nimport { arrRemove } from './util/arrRemove';\n\n/**\n * Represents a disposable resource, such as the execution of an Observable. A\n * Subscription has one important method, `unsubscribe`, that takes no argument\n * and just disposes the resource held by the subscription.\n *\n * Additionally, subscriptions may be grouped together through the `add()`\n * method, which will attach a child Subscription to the current Subscription.\n * When a Subscription is unsubscribed, all its children (and its grandchildren)\n * will be unsubscribed as well.\n *\n * @class Subscription\n */\nexport class Subscription implements SubscriptionLike {\n /** @nocollapse */\n public static EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n })();\n\n /**\n * A flag to indicate whether this Subscription has already been unsubscribed.\n */\n public closed = false;\n\n private _parentage: Subscription[] | Subscription | null = null;\n\n /**\n * The list of registered finalizers to execute upon unsubscription. Adding and removing from this\n * list occurs in the {@link #add} and {@link #remove} methods.\n */\n private _finalizers: Exclude<TeardownLogic, void>[] | null = null;\n\n /**\n * @param initialTeardown A function executed first as part of the finalization\n * process that is kicked off when {@link #unsubscribe} is called.\n */\n constructor(private initialTeardown?: () => void) {}\n\n /**\n * Disposes the resources held by the subscription. May, for instance, cancel\n * an ongoing Observable execution or cancel any other type of work that\n * started when the Subscription was created.\n * @return {void}\n */\n unsubscribe(): void {\n let errors: any[] | undefined;\n\n if (!this.closed) {\n this.closed = true;\n\n // Remove this from it's parents.\n const { _parentage } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n } else {\n _parentage.remove(this);\n }\n }\n\n const { initialTeardown: initialFinalizer } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n } catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n\n const { _finalizers } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n } catch (err) {\n errors = errors ?? [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n } else {\n errors.push(err);\n }\n }\n }\n }\n\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n\n /**\n * Adds a finalizer to this subscription, so that finalization will be unsubscribed/called\n * when this subscription is unsubscribed. If this subscription is already {@link #closed},\n * because it has already been unsubscribed, then whatever finalizer is passed to it\n * will automatically be executed (unless the finalizer itself is also a closed subscription).\n *\n * Closed Subscriptions cannot be added as finalizers to any subscription. Adding a closed\n * subscription to a any subscription will result in no operation. (A noop).\n *\n * Adding a subscription to itself, or adding `null` or `undefined` will not perform any\n * operation at all. (A noop).\n *\n * `Subscription` instances that are added to this instance will automatically remove themselves\n * if they are unsubscribed. Functions and {@link Unsubscribable} objects that you wish to remove\n * will need to be removed manually with {@link #remove}\n *\n * @param teardown The finalization logic to add to this subscription.\n */\n add(teardown: TeardownLogic): void {\n // Only add the finalizer if it's not undefined\n // and don't add a subscription to itself.\n if (teardown && teardown !== this) {\n if (this.closed) {\n // If this subscription is already closed,\n // execute whatever finalizer is handed to it automatically.\n execFinalizer(teardown);\n } else {\n if (teardown instanceof Subscription) {\n // We don't add closed subscriptions, and we don't add the same subscription\n // twice. Subscription unsubscribe is idempotent.\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = this._finalizers ?? []).push(teardown);\n }\n }\n }\n\n /**\n * Checks to see if a this subscription already has a particular parent.\n * This will signal that this subscription has already been added to the parent in question.\n * @param parent the parent to check for\n */\n private _hasParent(parent: Subscription) {\n const { _parentage } = this;\n return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));\n }\n\n /**\n * Adds a parent to this subscription so it can be removed from the parent if it\n * unsubscribes on it's own.\n *\n * NOTE: THIS ASSUMES THAT {@link _hasParent} HAS ALREADY BEEN CHECKED.\n * @param parent The parent subscription to add\n */\n private _addParent(parent: Subscription) {\n const { _parentage } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n\n /**\n * Called on a child when it is removed via {@link #remove}.\n * @param parent The parent to remove\n */\n private _removeParent(parent: Subscription) {\n const { _parentage } = this;\n if (_parentage === parent) {\n this._parentage = null;\n } else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n\n /**\n * Removes a finalizer from this subscription that was previously added with the {@link #add} method.\n *\n * Note that `Subscription` instances, when unsubscribed, will automatically remove themselves\n * from every other `Subscription` they have been added to. This means that using the `remove` method\n * is not a common thing and should be used thoughtfully.\n *\n * If you add the same finalizer instance of a function or an unsubscribable object to a `Subscription` instance\n * more than once, you will need to call `remove` the same number of times to remove all instances.\n *\n * All finalizer instances are removed to free up memory upon unsubscription.\n *\n * @param teardown The finalizer to remove from this subscription\n */\n remove(teardown: Exclude<TeardownLogic, void>): void {\n const { _finalizers } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\n\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\n\nexport function isSubscription(value: any): value is Subscription {\n return (\n value instanceof Subscription ||\n (value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe))\n );\n}\n\nfunction execFinalizer(finalizer: Unsubscribable | (() => void)) {\n if (isFunction(finalizer)) {\n finalizer();\n } else {\n finalizer.unsubscribe();\n }\n}\n", "import { Subscriber } from './Subscriber';\nimport { ObservableNotification } from './types';\n\n/**\n * The {@link GlobalConfig} object for RxJS. It is used to configure things\n * like how to react on unhandled errors.\n */\nexport const config: GlobalConfig = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false,\n};\n\n/**\n * The global configuration object for RxJS, used to configure things\n * like how to react on unhandled errors. Accessible via {@link config}\n * object.\n */\nexport interface GlobalConfig {\n /**\n * A registration point for unhandled errors from RxJS. These are errors that\n * cannot were not handled by consuming code in the usual subscription path. For\n * example, if you have this configured, and you subscribe to an observable without\n * providing an error handler, errors from that subscription will end up here. This\n * will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onUnhandledError: ((err: any) => void) | null;\n\n /**\n * A registration point for notifications that cannot be sent to subscribers because they\n * have completed, errored or have been explicitly unsubscribed. By default, next, complete\n * and error notifications sent to stopped subscribers are noops. However, sometimes callers\n * might want a different behavior. For example, with sources that attempt to report errors\n * to stopped subscribers, a caller can configure RxJS to throw an unhandled error instead.\n * This will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onStoppedNotification: ((notification: ObservableNotification<any>, subscriber: Subscriber<any>) => void) | null;\n\n /**\n * The promise constructor used by default for {@link Observable#toPromise toPromise} and {@link Observable#forEach forEach}\n * methods.\n *\n * @deprecated As of version 8, RxJS will no longer support this sort of injection of a\n * Promise constructor. If you need a Promise implementation other than native promises,\n * please polyfill/patch Promise as you see appropriate. Will be removed in v8.\n */\n Promise?: PromiseConstructorLike;\n\n /**\n * If true, turns on synchronous error rethrowing, which is a deprecated behavior\n * in v6 and higher. This behavior enables bad patterns like wrapping a subscribe\n * call in a try/catch block. It also enables producer interference, a nasty bug\n * where a multicast can be broken for all observers by a downstream consumer with\n * an unhandled error. DO NOT USE THIS FLAG UNLESS IT'S NEEDED TO BUY TIME\n * FOR MIGRATION REASONS.\n *\n * @deprecated As of version 8, RxJS will no longer support synchronous throwing\n * of unhandled errors. All errors will be thrown on a separate call stack to prevent bad\n * behaviors described above. Will be removed in v8.\n */\n useDeprecatedSynchronousErrorHandling: boolean;\n\n /**\n * If true, enables an as-of-yet undocumented feature from v5: The ability to access\n * `unsubscribe()` via `this` context in `next` functions created in observers passed\n * to `subscribe`.\n *\n * This is being removed because the performance was severely problematic, and it could also cause\n * issues when types other than POJOs are passed to subscribe as subscribers, as they will likely have\n * their `this` context overwritten.\n *\n * @deprecated As of version 8, RxJS will no longer support altering the\n * context of next functions provided as part of an observer to Subscribe. Instead,\n * you will have access to a subscription or a signal or token that will allow you to do things like\n * unsubscribe and test closed status. Will be removed in v8.\n */\n useDeprecatedNextContext: boolean;\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetTimeoutFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearTimeoutFunction = (handle: TimerHandle) => void;\n\ninterface TimeoutProvider {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n delegate:\n | {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n }\n | undefined;\n}\n\nexport const timeoutProvider: TimeoutProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setTimeout(handler: () => void, timeout?: number, ...args) {\n const { delegate } = timeoutProvider;\n if (delegate?.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const { delegate } = timeoutProvider;\n return (delegate?.clearTimeout || clearTimeout)(handle as any);\n },\n delegate: undefined,\n};\n", "import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\n\n/**\n * Handles an error on another job either with the user-configured {@link onUnhandledError},\n * or by throwing it on that new job so it can be picked up by `window.onerror`, `process.on('error')`, etc.\n *\n * This should be called whenever there is an error that is out-of-band with the subscription\n * or when an error hits a terminal boundary of the subscription and no error handler was provided.\n *\n * @param err the error to report\n */\nexport function reportUnhandledError(err: any) {\n timeoutProvider.setTimeout(() => {\n const { onUnhandledError } = config;\n if (onUnhandledError) {\n // Execute the user-configured error handler.\n onUnhandledError(err);\n } else {\n // Throw so it is picked up by the runtime's uncaught error mechanism.\n throw err;\n }\n });\n}\n", "/* tslint:disable:no-empty */\nexport function noop() { }\n", "import { CompleteNotification, NextNotification, ErrorNotification } from './types';\n\n/**\n * A completion object optimized for memory use and created to be the\n * same \"shape\" as other notifications in v8.\n * @internal\n */\nexport const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined) as CompleteNotification)();\n\n/**\n * Internal use only. Creates an optimized error notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function errorNotification(error: any): ErrorNotification {\n return createNotification('E', undefined, error) as any;\n}\n\n/**\n * Internal use only. Creates an optimized next notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function nextNotification<T>(value: T) {\n return createNotification('N', value, undefined) as NextNotification<T>;\n}\n\n/**\n * Ensures that all notifications created internally have the same \"shape\" in v8.\n *\n * TODO: This is only exported to support a crazy legacy test in `groupBy`.\n * @internal\n */\nexport function createNotification(kind: 'N' | 'E' | 'C', value: any, error: any) {\n return {\n kind,\n value,\n error,\n };\n}\n", "import { config } from '../config';\n\nlet context: { errorThrown: boolean; error: any } | null = null;\n\n/**\n * Handles dealing with errors for super-gross mode. Creates a context, in which\n * any synchronously thrown errors will be passed to {@link captureError}. Which\n * will record the error such that it will be rethrown after the call back is complete.\n * TODO: Remove in v8\n * @param cb An immediately executed function.\n */\nexport function errorContext(cb: () => void) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = { errorThrown: false, error: null };\n }\n cb();\n if (isRoot) {\n const { errorThrown, error } = context!;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n } else {\n // This is the general non-deprecated path for everyone that\n // isn't crazy enough to use super-gross mode (useDeprecatedSynchronousErrorHandling)\n cb();\n }\n}\n\n/**\n * Captures errors only in super-gross mode.\n * @param err the error to capture\n */\nexport function captureError(err: any) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { Observer, ObservableNotification } from './types';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\n\n/**\n * Implements the {@link Observer} interface and extends the\n * {@link Subscription} class. While the {@link Observer} is the public API for\n * consuming the values of an {@link Observable}, all Observers get converted to\n * a Subscriber, in order to provide Subscription-like capabilities such as\n * `unsubscribe`. Subscriber is a common type in RxJS, and crucial for\n * implementing operators, but it is rarely used as a public API.\n *\n * @class Subscriber<T>\n */\nexport class Subscriber<T> extends Subscription implements Observer<T> {\n /**\n * A static factory for a Subscriber, given a (potentially partial) definition\n * of an Observer.\n * @param next The `next` callback of an Observer.\n * @param error The `error` callback of an\n * Observer.\n * @param complete The `complete` callback of an\n * Observer.\n * @return A Subscriber wrapping the (partially defined)\n * Observer represented by the given arguments.\n * @nocollapse\n * @deprecated Do not use. Will be removed in v8. There is no replacement for this\n * method, and there is no reason to be creating instances of `Subscriber` directly.\n * If you have a specific use case, please file an issue.\n */\n static create<T>(next?: (x?: T) => void, error?: (e?: any) => void, complete?: () => void): Subscriber<T> {\n return new SafeSubscriber(next, error, complete);\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected isStopped: boolean = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected destination: Subscriber<any> | Observer<any>; // this `any` is the escape hatch to erase extra type param (e.g. R)\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * There is no reason to directly create an instance of Subscriber. This type is exported for typings reasons.\n */\n constructor(destination?: Subscriber<any> | Observer<any>) {\n super();\n if (destination) {\n this.destination = destination;\n // Automatically chain subscriptions together here.\n // if destination is a Subscription, then it is a Subscriber.\n if (isSubscription(destination)) {\n destination.add(this);\n }\n } else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `next` from\n * the Observable, with a value. The Observable may call this method 0 or more\n * times.\n * @param {T} [value] The `next` value.\n * @return {void}\n */\n next(value?: T): void {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n } else {\n this._next(value!);\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `error` from\n * the Observable, with an attached `Error`. Notifies the Observer that\n * the Observable has experienced an error condition.\n * @param {any} [err] The `error` exception.\n * @return {void}\n */\n error(err?: any): void {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n } else {\n this.isStopped = true;\n this._error(err);\n }\n }\n\n /**\n * The {@link Observer} callback to receive a valueless notification of type\n * `complete` from the Observable. Notifies the Observer that the Observable\n * has finished sending push-based notifications.\n * @return {void}\n */\n complete(): void {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n } else {\n this.isStopped = true;\n this._complete();\n }\n }\n\n unsubscribe(): void {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null!;\n }\n }\n\n protected _next(value: T): void {\n this.destination.next(value);\n }\n\n protected _error(err: any): void {\n try {\n this.destination.error(err);\n } finally {\n this.unsubscribe();\n }\n }\n\n protected _complete(): void {\n try {\n this.destination.complete();\n } finally {\n this.unsubscribe();\n }\n }\n}\n\n/**\n * This bind is captured here because we want to be able to have\n * compatibility with monoid libraries that tend to use a method named\n * `bind`. In particular, a library called Monio requires this.\n */\nconst _bind = Function.prototype.bind;\n\nfunction bind<Fn extends (...args: any[]) => any>(fn: Fn, thisArg: any): Fn {\n return _bind.call(fn, thisArg);\n}\n\n/**\n * Internal optimization only, DO NOT EXPOSE.\n * @internal\n */\nclass ConsumerObserver<T> implements Observer<T> {\n constructor(private partialObserver: Partial<Observer<T>>) {}\n\n next(value: T): void {\n const { partialObserver } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n\n error(err: any): void {\n const { partialObserver } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n } catch (error) {\n handleUnhandledError(error);\n }\n } else {\n handleUnhandledError(err);\n }\n }\n\n complete(): void {\n const { partialObserver } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\n\nexport class SafeSubscriber<T> extends Subscriber<T> {\n constructor(\n observerOrNext?: Partial<Observer<T>> | ((value: T) => void) | null,\n error?: ((e?: any) => void) | null,\n complete?: (() => void) | null\n ) {\n super();\n\n let partialObserver: Partial<Observer<T>>;\n if (isFunction(observerOrNext) || !observerOrNext) {\n // The first argument is a function, not an observer. The next\n // two arguments *could* be observers, or they could be empty.\n partialObserver = {\n next: (observerOrNext ?? undefined) as (((value: T) => void) | undefined),\n error: error ?? undefined,\n complete: complete ?? undefined,\n };\n } else {\n // The first argument is a partial observer.\n let context: any;\n if (this && config.useDeprecatedNextContext) {\n // This is a deprecated path that made `this.unsubscribe()` available in\n // next handler functions passed to subscribe. This only exists behind a flag\n // now, as it is *very* slow.\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context),\n };\n } else {\n // The \"normal\" path. Just use the partial observer directly.\n partialObserver = observerOrNext;\n }\n }\n\n // Wrap the partial observer to ensure it's a full observer, and\n // make sure proper error handling is accounted for.\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\n\nfunction handleUnhandledError(error: any) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n } else {\n // Ideal path, we report this as an unhandled error,\n // which is thrown on a new call stack.\n reportUnhandledError(error);\n }\n}\n\n/**\n * An error handler used when no error handler was supplied\n * to the SafeSubscriber -- meaning no error handler was supplied\n * do the `subscribe` call on our observable.\n * @param err The error to handle\n */\nfunction defaultErrorHandler(err: any) {\n throw err;\n}\n\n/**\n * A handler for notifications that cannot be sent to a stopped subscriber.\n * @param notification The notification being sent\n * @param subscriber The stopped subscriber\n */\nfunction handleStoppedNotification(notification: ObservableNotification<any>, subscriber: Subscriber<any>) {\n const { onStoppedNotification } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\n\n/**\n * The observer used as a stub for subscriptions where the user did not\n * pass any arguments to `subscribe`. Comes with the default error handling\n * behavior.\n */\nexport const EMPTY_OBSERVER: Readonly<Observer<any>> & { closed: true } = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop,\n};\n", "/**\n * Symbol.observable or a string \"@@observable\". Used for interop\n *\n * @deprecated We will no longer be exporting this symbol in upcoming versions of RxJS.\n * Instead polyfill and use Symbol.observable directly *or* use https://www.npmjs.com/package/symbol-observable\n */\nexport const observable: string | symbol = (() => (typeof Symbol === 'function' && Symbol.observable) || '@@observable')();\n", "/**\n * This function takes one parameter and just returns it. Simply put,\n * this is like `<T>(x: T): T => x`.\n *\n * ## Examples\n *\n * This is useful in some cases when using things like `mergeMap`\n *\n * ```ts\n * import { interval, take, map, range, mergeMap, identity } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(5));\n *\n * const result$ = source$.pipe(\n * map(i => range(i)),\n * mergeMap(identity) // same as mergeMap(x => x)\n * );\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * Or when you want to selectively apply an operator\n *\n * ```ts\n * import { interval, take, identity } from 'rxjs';\n *\n * const shouldLimit = () => Math.random() < 0.5;\n *\n * const source$ = interval(1000);\n *\n * const result$ = source$.pipe(shouldLimit() ? take(5) : identity);\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * @param x Any value that is returned by this function\n * @returns The value passed as the first parameter to this function\n */\nexport function identity<T>(x: T): T {\n return x;\n}\n", "import { identity } from './identity';\nimport { UnaryFunction } from '../types';\n\nexport function pipe(): typeof identity;\nexport function pipe<T, A>(fn1: UnaryFunction<T, A>): UnaryFunction<T, A>;\nexport function pipe<T, A, B>(fn1: UnaryFunction<T, A>, fn2: UnaryFunction<A, B>): UnaryFunction<T, B>;\nexport function pipe<T, A, B, C>(fn1: UnaryFunction<T, A>, fn2: UnaryFunction<A, B>, fn3: UnaryFunction<B, C>): UnaryFunction<T, C>;\nexport function pipe<T, A, B, C, D>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>\n): UnaryFunction<T, D>;\nexport function pipe<T, A, B, C, D, E>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>\n): UnaryFunction<T, E>;\nexport function pipe<T, A, B, C, D, E, F>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>\n): UnaryFunction<T, F>;\nexport function pipe<T, A, B, C, D, E, F, G>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>\n): UnaryFunction<T, G>;\nexport function pipe<T, A, B, C, D, E, F, G, H>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>,\n fn8: UnaryFunction<G, H>\n): UnaryFunction<T, H>;\nexport function pipe<T, A, B, C, D, E, F, G, H, I>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>,\n fn8: UnaryFunction<G, H>,\n fn9: UnaryFunction<H, I>\n): UnaryFunction<T, I>;\nexport function pipe<T, A, B, C, D, E, F, G, H, I>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>,\n fn8: UnaryFunction<G, H>,\n fn9: UnaryFunction<H, I>,\n ...fns: UnaryFunction<any, any>[]\n): UnaryFunction<T, unknown>;\n\n/**\n * pipe() can be called on one or more functions, each of which can take one argument (\"UnaryFunction\")\n * and uses it to return a value.\n * It returns a function that takes one argument, passes it to the first UnaryFunction, and then\n * passes the result to the next one, passes that result to the next one, and so on. \n */\nexport function pipe(...fns: Array<UnaryFunction<any, any>>): UnaryFunction<any, any> {\n return pipeFromArray(fns);\n}\n\n/** @internal */\nexport function pipeFromArray<T, R>(fns: Array<UnaryFunction<T, R>>): UnaryFunction<T, R> {\n if (fns.length === 0) {\n return identity as UnaryFunction<any, any>;\n }\n\n if (fns.length === 1) {\n return fns[0];\n }\n\n return function piped(input: T): R {\n return fns.reduce((prev: any, fn: UnaryFunction<T, R>) => fn(prev), input as any);\n };\n}\n", "import { Operator } from './Operator';\nimport { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription, Subscription } from './Subscription';\nimport { TeardownLogic, OperatorFunction, Subscribable, Observer } from './types';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A representation of any set of values over any amount of time. This is the most basic building block\n * of RxJS.\n *\n * @class Observable<T>\n */\nexport class Observable<T> implements Subscribable<T> {\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n source: Observable<any> | undefined;\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n operator: Operator<any, T> | undefined;\n\n /**\n * @constructor\n * @param {Function} subscribe the function that is called when the Observable is\n * initially subscribed to. This function is given a Subscriber, to which new values\n * can be `next`ed, or an `error` method can be called to raise an error, or\n * `complete` can be called to notify of a successful completion.\n */\n constructor(subscribe?: (this: Observable<T>, subscriber: Subscriber<T>) => TeardownLogic) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n\n // HACK: Since TypeScript inherits static properties too, we have to\n // fight against TypeScript here so Subject can have a different static create signature\n /**\n * Creates a new Observable by calling the Observable constructor\n * @owner Observable\n * @method create\n * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor\n * @return {Observable} a new observable\n * @nocollapse\n * @deprecated Use `new Observable()` instead. Will be removed in v8.\n */\n static create: (...args: any[]) => any = <T>(subscribe?: (subscriber: Subscriber<T>) => TeardownLogic) => {\n return new Observable<T>(subscribe);\n };\n\n /**\n * Creates a new Observable, with this Observable instance as the source, and the passed\n * operator defined as the new observable's operator.\n * @method lift\n * @param operator the operator defining the operation to take on the observable\n * @return a new observable with the Operator applied\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * If you have implemented an operator using `lift`, it is recommended that you create an\n * operator by simply returning `new Observable()` directly. See \"Creating new operators from\n * scratch\" section here: https://rxjs.dev/guide/operators\n */\n lift<R>(operator?: Operator<T, R>): Observable<R> {\n const observable = new Observable<R>();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n\n subscribe(observerOrNext?: Partial<Observer<T>> | ((value: T) => void)): Subscription;\n /** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\n subscribe(next?: ((value: T) => void) | null, error?: ((error: any) => void) | null, complete?: (() => void) | null): Subscription;\n /**\n * Invokes an execution of an Observable and registers Observer handlers for notifications it will emit.\n *\n * <span class=\"informal\">Use it when you have all these Observables, but still nothing is happening.</span>\n *\n * `subscribe` is not a regular operator, but a method that calls Observable's internal `subscribe` function. It\n * might be for example a function that you passed to Observable's constructor, but most of the time it is\n * a library implementation, which defines what will be emitted by an Observable, and when it be will emitted. This means\n * that calling `subscribe` is actually the moment when Observable starts its work, not when it is created, as it is often\n * the thought.\n *\n * Apart from starting the execution of an Observable, this method allows you to listen for values\n * that an Observable emits, as well as for when it completes or errors. You can achieve this in two\n * of the following ways.\n *\n * The first way is creating an object that implements {@link Observer} interface. It should have methods\n * defined by that interface, but note that it should be just a regular JavaScript object, which you can create\n * yourself in any way you want (ES6 class, classic function constructor, object literal etc.). In particular, do\n * not attempt to use any RxJS implementation details to create Observers - you don't need them. Remember also\n * that your object does not have to implement all methods. If you find yourself creating a method that doesn't\n * do anything, you can simply omit it. Note however, if the `error` method is not provided and an error happens,\n * it will be thrown asynchronously. Errors thrown asynchronously cannot be caught using `try`/`catch`. Instead,\n * use the {@link onUnhandledError} configuration option or use a runtime handler (like `window.onerror` or\n * `process.on('error)`) to be notified of unhandled errors. Because of this, it's recommended that you provide\n * an `error` method to avoid missing thrown errors.\n *\n * The second way is to give up on Observer object altogether and simply provide callback functions in place of its methods.\n * This means you can provide three functions as arguments to `subscribe`, where the first function is equivalent\n * of a `next` method, the second of an `error` method and the third of a `complete` method. Just as in case of an Observer,\n * if you do not need to listen for something, you can omit a function by passing `undefined` or `null`,\n * since `subscribe` recognizes these functions by where they were placed in function call. When it comes\n * to the `error` function, as with an Observer, if not provided, errors emitted by an Observable will be thrown asynchronously.\n *\n * You can, however, subscribe with no parameters at all. This may be the case where you're not interested in terminal events\n * and you also handled emissions internally by using operators (e.g. using `tap`).\n *\n * Whichever style of calling `subscribe` you use, in both cases it returns a Subscription object.\n * This object allows you to call `unsubscribe` on it, which in turn will stop the work that an Observable does and will clean\n * up all resources that an Observable used. Note that cancelling a subscription will not call `complete` callback\n * provided to `subscribe` function, which is reserved for a regular completion signal that comes from an Observable.\n *\n * Remember that callbacks provided to `subscribe` are not guaranteed to be called asynchronously.\n * It is an Observable itself that decides when these functions will be called. For example {@link of}\n * by default emits all its values synchronously. Always check documentation for how given Observable\n * will behave when subscribed and if its default behavior can be modified with a `scheduler`.\n *\n * #### Examples\n *\n * Subscribe with an {@link guide/observer Observer}\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * const sumObserver = {\n * sum: 0,\n * next(value) {\n * console.log('Adding: ' + value);\n * this.sum = this.sum + value;\n * },\n * error() {\n * // We actually could just remove this method,\n * // since we do not really care about errors right now.\n * },\n * complete() {\n * console.log('Sum equals: ' + this.sum);\n * }\n * };\n *\n * of(1, 2, 3) // Synchronously emits 1, 2, 3 and then completes.\n * .subscribe(sumObserver);\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Subscribe with functions ({@link deprecations/subscribe-arguments deprecated})\n *\n * ```ts\n * import { of } from 'rxjs'\n *\n * let sum = 0;\n *\n * of(1, 2, 3).subscribe(\n * value => {\n * console.log('Adding: ' + value);\n * sum = sum + value;\n * },\n * undefined,\n * () => console.log('Sum equals: ' + sum)\n * );\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Cancel a subscription\n *\n * ```ts\n * import { interval } from 'rxjs';\n *\n * const subscription = interval(1000).subscribe({\n * next(num) {\n * console.log(num)\n * },\n * complete() {\n * // Will not be called, even when cancelling subscription.\n * console.log('completed!');\n * }\n * });\n *\n * setTimeout(() => {\n * subscription.unsubscribe();\n * console.log('unsubscribed!');\n * }, 2500);\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 'unsubscribed!' after 2.5s\n * ```\n *\n * @param {Observer|Function} observerOrNext (optional) Either an observer with methods to be called,\n * or the first of three possible handlers, which is the handler for each value emitted from the subscribed\n * Observable.\n * @param {Function} error (optional) A handler for a terminal event resulting from an error. If no error handler is provided,\n * the error will be thrown asynchronously as unhandled.\n * @param {Function} complete (optional) A handler for a terminal event resulting from successful completion.\n * @return {Subscription} a subscription reference to the registered handlers\n * @method subscribe\n */\n subscribe(\n observerOrNext?: Partial<Observer<T>> | ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n ): Subscription {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n\n errorContext(() => {\n const { operator, source } = this;\n subscriber.add(\n operator\n ? // We're dealing with a subscription in the\n // operator chain to one of our lifted operators.\n operator.call(subscriber, source)\n : source\n ? // If `source` has a value, but `operator` does not, something that\n // had intimate knowledge of our API, like our `Subject`, must have\n // set it. We're going to just call `_subscribe` directly.\n this._subscribe(subscriber)\n : // In all other cases, we're likely wrapping a user-provided initializer\n // function, so we need to catch errors and handle them appropriately.\n this._trySubscribe(subscriber)\n );\n });\n\n return subscriber;\n }\n\n /** @internal */\n protected _trySubscribe(sink: Subscriber<T>): TeardownLogic {\n try {\n return this._subscribe(sink);\n } catch (err) {\n // We don't need to return anything in this case,\n // because it's just going to try to `add()` to a subscription\n // above.\n sink.error(err);\n }\n }\n\n /**\n * Used as a NON-CANCELLABLE means of subscribing to an observable, for use with\n * APIs that expect promises, like `async/await`. You cannot unsubscribe from this.\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * #### Example\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(4));\n *\n * async function getTotal() {\n * let total = 0;\n *\n * await source$.forEach(value => {\n * total += value;\n * console.log('observable -> ' + value);\n * });\n *\n * return total;\n * }\n *\n * getTotal().then(\n * total => console.log('Total: ' + total)\n * );\n *\n * // Expected:\n * // 'observable -> 0'\n * // 'observable -> 1'\n * // 'observable -> 2'\n * // 'observable -> 3'\n * // 'Total: 6'\n * ```\n *\n * @param next a handler for each value emitted by the observable\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n */\n forEach(next: (value: T) => void): Promise<void>;\n\n /**\n * @param next a handler for each value emitted by the observable\n * @param promiseCtor a constructor function used to instantiate the Promise\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n * @deprecated Passing a Promise constructor will no longer be available\n * in upcoming versions of RxJS. This is because it adds weight to the library, for very\n * little benefit. If you need this functionality, it is recommended that you either\n * polyfill Promise, or you create an adapter to convert the returned native promise\n * to whatever promise implementation you wanted. Will be removed in v8.\n */\n forEach(next: (value: T) => void, promiseCtor: PromiseConstructorLike): Promise<void>;\n\n forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise<void> {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor<void>((resolve, reject) => {\n const subscriber = new SafeSubscriber<T>({\n next: (value) => {\n try {\n next(value);\n } catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve,\n });\n this.subscribe(subscriber);\n }) as Promise<void>;\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<any>): TeardownLogic {\n return this.source?.subscribe(subscriber);\n }\n\n /**\n * An interop point defined by the es7-observable spec https://github.com/zenparsing/es-observable\n * @method Symbol.observable\n * @return {Observable} this instance of the observable\n */\n [Symbol_observable]() {\n return this;\n }\n\n /* tslint:disable:max-line-length */\n pipe(): Observable<T>;\n pipe<A>(op1: OperatorFunction<T, A>): Observable<A>;\n pipe<A, B>(op1: OperatorFunction<T, A>, op2: OperatorFunction<A, B>): Observable<B>;\n pipe<A, B, C>(op1: OperatorFunction<T, A>, op2: OperatorFunction<A, B>, op3: OperatorFunction<B, C>): Observable<C>;\n pipe<A, B, C, D>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>\n ): Observable<D>;\n pipe<A, B, C, D, E>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>\n ): Observable<E>;\n pipe<A, B, C, D, E, F>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>\n ): Observable<F>;\n pipe<A, B, C, D, E, F, G>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>\n ): Observable<G>;\n pipe<A, B, C, D, E, F, G, H>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>,\n op8: OperatorFunction<G, H>\n ): Observable<H>;\n pipe<A, B, C, D, E, F, G, H, I>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>,\n op8: OperatorFunction<G, H>,\n op9: OperatorFunction<H, I>\n ): Observable<I>;\n pipe<A, B, C, D, E, F, G, H, I>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>,\n op8: OperatorFunction<G, H>,\n op9: OperatorFunction<H, I>,\n ...operations: OperatorFunction<any, any>[]\n ): Observable<unknown>;\n /* tslint:enable:max-line-length */\n\n /**\n * Used to stitch together functional operators into a chain.\n * @method pipe\n * @return {Observable} the Observable result of all of the operators having\n * been called in the order they were passed in.\n *\n * ## Example\n *\n * ```ts\n * import { interval, filter, map, scan } from 'rxjs';\n *\n * interval(1000)\n * .pipe(\n * filter(x => x % 2 === 0),\n * map(x => x + x),\n * scan((acc, x) => acc + x)\n * )\n * .subscribe(x => console.log(x));\n * ```\n */\n pipe(...operations: OperatorFunction<any, any>[]): Observable<any> {\n return pipeFromArray(operations)(this);\n }\n\n /* tslint:disable:max-line-length */\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(): Promise<T | undefined>;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: typeof Promise): Promise<T | undefined>;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: PromiseConstructorLike): Promise<T | undefined>;\n /* tslint:enable:max-line-length */\n\n /**\n * Subscribe to this Observable and get a Promise resolving on\n * `complete` with the last emission (if any).\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * @method toPromise\n * @param [promiseCtor] a constructor function used to instantiate\n * the Promise\n * @return A Promise that resolves with the last value emit, or\n * rejects on an error. If there were no emissions, Promise\n * resolves with undefined.\n * @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise\n */\n toPromise(promiseCtor?: PromiseConstructorLike): Promise<T | undefined> {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n let value: T | undefined;\n this.subscribe(\n (x: T) => (value = x),\n (err: any) => reject(err),\n () => resolve(value)\n );\n }) as Promise<T | undefined>;\n }\n}\n\n/**\n * Decides between a passed promise constructor from consuming code,\n * A default configured promise constructor, and the native promise\n * constructor and returns it. If nothing can be found, it will throw\n * an error.\n * @param promiseCtor The optional promise constructor to passed by consuming code\n */\nfunction getPromiseCtor(promiseCtor: PromiseConstructorLike | undefined) {\n return promiseCtor ?? config.Promise ?? Promise;\n}\n\nfunction isObserver<T>(value: any): value is Observer<T> {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\n\nfunction isSubscriber<T>(value: any): value is Subscriber<T> {\n return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { OperatorFunction } from '../types';\nimport { isFunction } from './isFunction';\n\n/**\n * Used to determine if an object is an Observable with a lift function.\n */\nexport function hasLift(source: any): source is { lift: InstanceType<typeof Observable>['lift'] } {\n return isFunction(source?.lift);\n}\n\n/**\n * Creates an `OperatorFunction`. Used to define operators throughout the library in a concise way.\n * @param init The logic to connect the liftedSource to the subscriber at the moment of subscription.\n */\nexport function operate<T, R>(\n init: (liftedSource: Observable<T>, subscriber: Subscriber<R>) => (() => void) | void\n): OperatorFunction<T, R> {\n return (source: Observable<T>) => {\n if (hasLift(source)) {\n return source.lift(function (this: Subscriber<R>, liftedSource: Observable<T>) {\n try {\n return init(liftedSource, this);\n } catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n", "import { Subscriber } from '../Subscriber';\n\n/**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional teardown logic here. This will only be called on teardown if the\n * subscriber itself is not already closed. This is called after all other teardown logic is executed.\n */\nexport function createOperatorSubscriber<T>(\n destination: Subscriber<any>,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n onFinalize?: () => void\n): Subscriber<T> {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\n\n/**\n * A generic helper for allowing operators to be created with a Subscriber and\n * use closures to capture necessary state from the operator function itself.\n */\nexport class OperatorSubscriber<T> extends Subscriber<T> {\n /**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional finalization logic here. This will only be called on finalization if the\n * subscriber itself is not already closed. This is called after all other finalization logic is executed.\n * @param shouldUnsubscribe An optional check to see if an unsubscribe call should truly unsubscribe.\n * NOTE: This currently **ONLY** exists to support the strange behavior of {@link groupBy}, where unsubscription\n * to the resulting observable does not actually disconnect from the source if there are active subscriptions\n * to any grouped observable. (DO NOT EXPOSE OR USE EXTERNALLY!!!)\n */\n constructor(\n destination: Subscriber<any>,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n private onFinalize?: () => void,\n private shouldUnsubscribe?: () => boolean\n ) {\n // It's important - for performance reasons - that all of this class's\n // members are initialized and that they are always initialized in the same\n // order. This will ensure that all OperatorSubscriber instances have the\n // same hidden class in V8. This, in turn, will help keep the number of\n // hidden classes involved in property accesses within the base class as\n // low as possible. If the number of hidden classes involved exceeds four,\n // the property accesses will become megamorphic and performance penalties\n // will be incurred - i.e. inline caches won't be used.\n //\n // The reasons for ensuring all instances have the same hidden class are\n // further discussed in this blog post from Benedikt Meurer:\n // https://benediktmeurer.de/2018/03/23/impact-of-polymorphism-on-component-based-frameworks-like-react/\n super(destination);\n this._next = onNext\n ? function (this: OperatorSubscriber<T>, value: T) {\n try {\n onNext(value);\n } catch (err) {\n destination.error(err);\n }\n }\n : super._next;\n this._error = onError\n ? function (this: OperatorSubscriber<T>, err: any) {\n try {\n onError(err);\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._error;\n this._complete = onComplete\n ? function (this: OperatorSubscriber<T>) {\n try {\n onComplete();\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._complete;\n }\n\n unsubscribe() {\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const { closed } = this;\n super.unsubscribe();\n // Execute additional teardown if we have any and we didn't already do so.\n !closed && this.onFinalize?.();\n }\n }\n}\n", "import { Subscription } from '../Subscription';\n\ninterface AnimationFrameProvider {\n schedule(callback: FrameRequestCallback): Subscription;\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n delegate:\n | {\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n }\n | undefined;\n}\n\nexport const animationFrameProvider: AnimationFrameProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n schedule(callback) {\n let request = requestAnimationFrame;\n let cancel: typeof cancelAnimationFrame | undefined = cancelAnimationFrame;\n const { delegate } = animationFrameProvider;\n if (delegate) {\n request = delegate.requestAnimationFrame;\n cancel = delegate.cancelAnimationFrame;\n }\n const handle = request((timestamp) => {\n // Clear the cancel function. The request has been fulfilled, so\n // attempting to cancel the request upon unsubscription would be\n // pointless.\n cancel = undefined;\n callback(timestamp);\n });\n return new Subscription(() => cancel?.(handle));\n },\n requestAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.requestAnimationFrame || requestAnimationFrame)(...args);\n },\n cancelAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.cancelAnimationFrame || cancelAnimationFrame)(...args);\n },\n delegate: undefined,\n};\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface ObjectUnsubscribedError extends Error {}\n\nexport interface ObjectUnsubscribedErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): ObjectUnsubscribedError;\n}\n\n/**\n * An error thrown when an action is invalid because the object has been\n * unsubscribed.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n *\n * @class ObjectUnsubscribedError\n */\nexport const ObjectUnsubscribedError: ObjectUnsubscribedErrorCtor = createErrorClass(\n (_super) =>\n function ObjectUnsubscribedErrorImpl(this: any) {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n }\n);\n", "import { Operator } from './Operator';\nimport { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { Observer, SubscriptionLike, TeardownLogic } from './types';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A Subject is a special type of Observable that allows values to be\n * multicasted to many Observers. Subjects are like EventEmitters.\n *\n * Every Subject is an Observable and an Observer. You can subscribe to a\n * Subject, and you can call next to feed values as well as error and complete.\n */\nexport class Subject<T> extends Observable<T> implements SubscriptionLike {\n closed = false;\n\n private currentObservers: Observer<T>[] | null = null;\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n observers: Observer<T>[] = [];\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n isStopped = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n hasError = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n thrownError: any = null;\n\n /**\n * Creates a \"subject\" by basically gluing an observer to an observable.\n *\n * @nocollapse\n * @deprecated Recommended you do not use. Will be removed at some point in the future. Plans for replacement still under discussion.\n */\n static create: (...args: any[]) => any = <T>(destination: Observer<T>, source: Observable<T>): AnonymousSubject<T> => {\n return new AnonymousSubject<T>(destination, source);\n };\n\n constructor() {\n // NOTE: This must be here to obscure Observable's constructor.\n super();\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n lift<R>(operator: Operator<T, R>): Observable<R> {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator as any;\n return subject as any;\n }\n\n /** @internal */\n protected _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n\n next(value: T) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n\n error(err: any) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.error(err);\n }\n }\n });\n }\n\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.complete();\n }\n }\n });\n }\n\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null!;\n }\n\n get observed() {\n return this.observers?.length > 0;\n }\n\n /** @internal */\n protected _trySubscribe(subscriber: Subscriber<T>): TeardownLogic {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n\n /** @internal */\n protected _innerSubscribe(subscriber: Subscriber<any>) {\n const { hasError, isStopped, observers } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n\n /** @internal */\n protected _checkFinalizedStatuses(subscriber: Subscriber<any>) {\n const { hasError, thrownError, isStopped } = this;\n if (hasError) {\n subscriber.error(thrownError);\n } else if (isStopped) {\n subscriber.complete();\n }\n }\n\n /**\n * Creates a new Observable with this Subject as the source. You can do this\n * to create custom Observer-side logic of the Subject and conceal it from\n * code that uses the Observable.\n * @return {Observable} Observable that the Subject casts to\n */\n asObservable(): Observable<T> {\n const observable: any = new Observable<T>();\n observable.source = this;\n return observable;\n }\n}\n\n/**\n * @class AnonymousSubject<T>\n */\nexport class AnonymousSubject<T> extends Subject<T> {\n constructor(\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n public destination?: Observer<T>,\n source?: Observable<T>\n ) {\n super();\n this.source = source;\n }\n\n next(value: T) {\n this.destination?.next?.(value);\n }\n\n error(err: any) {\n this.destination?.error?.(err);\n }\n\n complete() {\n this.destination?.complete?.();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n return this.source?.subscribe(subscriber) ?? EMPTY_SUBSCRIPTION;\n }\n}\n", "import { Subject } from './Subject';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\n\n/**\n * A variant of Subject that requires an initial value and emits its current\n * value whenever it is subscribed to.\n *\n * @class BehaviorSubject<T>\n */\nexport class BehaviorSubject<T> extends Subject<T> {\n constructor(private _value: T) {\n super();\n }\n\n get value(): T {\n return this.getValue();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n const subscription = super._subscribe(subscriber);\n !subscription.closed && subscriber.next(this._value);\n return subscription;\n }\n\n getValue(): T {\n const { hasError, thrownError, _value } = this;\n if (hasError) {\n throw thrownError;\n }\n this._throwIfClosed();\n return _value;\n }\n\n next(value: T): void {\n super.next((this._value = value));\n }\n}\n", "import { TimestampProvider } from '../types';\n\ninterface DateTimestampProvider extends TimestampProvider {\n delegate: TimestampProvider | undefined;\n}\n\nexport const dateTimestampProvider: DateTimestampProvider = {\n now() {\n // Use the variable rather than `this` so that the function can be called\n // without being bound to the provider.\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined,\n};\n", "import { Subject } from './Subject';\nimport { TimestampProvider } from './types';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * A variant of {@link Subject} that \"replays\" old values to new subscribers by emitting them when they first subscribe.\n *\n * `ReplaySubject` has an internal buffer that will store a specified number of values that it has observed. Like `Subject`,\n * `ReplaySubject` \"observes\" values by having them passed to its `next` method. When it observes a value, it will store that\n * value for a time determined by the configuration of the `ReplaySubject`, as passed to its constructor.\n *\n * When a new subscriber subscribes to the `ReplaySubject` instance, it will synchronously emit all values in its buffer in\n * a First-In-First-Out (FIFO) manner. The `ReplaySubject` will also complete, if it has observed completion; and it will\n * error if it has observed an error.\n *\n * There are two main configuration items to be concerned with:\n *\n * 1. `bufferSize` - This will determine how many items are stored in the buffer, defaults to infinite.\n * 2. `windowTime` - The amount of time to hold a value in the buffer before removing it from the buffer.\n *\n * Both configurations may exist simultaneously. So if you would like to buffer a maximum of 3 values, as long as the values\n * are less than 2 seconds old, you could do so with a `new ReplaySubject(3, 2000)`.\n *\n * ### Differences with BehaviorSubject\n *\n * `BehaviorSubject` is similar to `new ReplaySubject(1)`, with a couple of exceptions:\n *\n * 1. `BehaviorSubject` comes \"primed\" with a single value upon construction.\n * 2. `ReplaySubject` will replay values, even after observing an error, where `BehaviorSubject` will not.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n * @see {@link shareReplay}\n */\nexport class ReplaySubject<T> extends Subject<T> {\n private _buffer: (T | number)[] = [];\n private _infiniteTimeWindow = true;\n\n /**\n * @param bufferSize The size of the buffer to replay on subscription\n * @param windowTime The amount of time the buffered items will stay buffered\n * @param timestampProvider An object with a `now()` method that provides the current timestamp. This is used to\n * calculate the amount of time something has been buffered.\n */\n constructor(\n private _bufferSize = Infinity,\n private _windowTime = Infinity,\n private _timestampProvider: TimestampProvider = dateTimestampProvider\n ) {\n super();\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n\n next(value: T): void {\n const { isStopped, _buffer, _infiniteTimeWindow, _timestampProvider, _windowTime } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n this._throwIfClosed();\n this._trimBuffer();\n\n const subscription = this._innerSubscribe(subscriber);\n\n const { _infiniteTimeWindow, _buffer } = this;\n // We use a copy here, so reentrant code does not mutate our array while we're\n // emitting it to a new subscriber.\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i] as T);\n }\n\n this._checkFinalizedStatuses(subscriber);\n\n return subscription;\n }\n\n private _trimBuffer() {\n const { _bufferSize, _timestampProvider, _buffer, _infiniteTimeWindow } = this;\n // If we don't have an infinite buffer size, and we're over the length,\n // use splice to truncate the old buffer values off. Note that we have to\n // double the size for instances where we're not using an infinite time window\n // because we're storing the values and the timestamps in the same array.\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n\n // Now, if we're not in an infinite time window, remove all values where the time is\n // older than what is allowed.\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n // Search the array for the first timestamp that isn't expired and\n // truncate the buffer up to that point.\n for (let i = 1; i < _buffer.length && (_buffer[i] as number) <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Subscription } from '../Subscription';\nimport { SchedulerAction } from '../types';\n\n/**\n * A unit of work to be executed in a `scheduler`. An action is typically\n * created from within a {@link SchedulerLike} and an RxJS user does not need to concern\n * themselves about creating and manipulating an Action.\n *\n * ```ts\n * class Action<T> extends Subscription {\n * new (scheduler: Scheduler, work: (state?: T) => void);\n * schedule(state?: T, delay: number = 0): Subscription;\n * }\n * ```\n *\n * @class Action<T>\n */\nexport class Action<T> extends Subscription {\n constructor(scheduler: Scheduler, work: (this: SchedulerAction<T>, state?: T) => void) {\n super();\n }\n /**\n * Schedules this action on its parent {@link SchedulerLike} for execution. May be passed\n * some context object, `state`. May happen at some point in the future,\n * according to the `delay` parameter, if specified.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler.\n * @return {void}\n */\n public schedule(state?: T, delay: number = 0): Subscription {\n return this;\n }\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetIntervalFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearIntervalFunction = (handle: TimerHandle) => void;\n\ninterface IntervalProvider {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n delegate:\n | {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n }\n | undefined;\n}\n\nexport const intervalProvider: IntervalProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setInterval(handler: () => void, timeout?: number, ...args) {\n const { delegate } = intervalProvider;\n if (delegate?.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const { delegate } = intervalProvider;\n return (delegate?.clearInterval || clearInterval)(handle as any);\n },\n delegate: undefined,\n};\n", "import { Action } from './Action';\nimport { SchedulerAction } from '../types';\nimport { Subscription } from '../Subscription';\nimport { AsyncScheduler } from './AsyncScheduler';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncAction<T> extends Action<T> {\n public id: TimerHandle | undefined;\n public state?: T;\n // @ts-ignore: Property has no initializer and is not definitely assigned\n public delay: number;\n protected pending: boolean = false;\n\n constructor(protected scheduler: AsyncScheduler, protected work: (this: SchedulerAction<T>, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (this.closed) {\n return this;\n }\n\n // Always replace the current state with the new state.\n this.state = state;\n\n const id = this.id;\n const scheduler = this.scheduler;\n\n //\n // Important implementation note:\n //\n // Actions only execute once by default, unless rescheduled from within the\n // scheduled callback. This allows us to implement single and repeat\n // actions via the same code path, without adding API surface area, as well\n // as mimic traditional recursion but across asynchronous boundaries.\n //\n // However, JS runtimes and timers distinguish between intervals achieved by\n // serial `setTimeout` calls vs. a single `setInterval` call. An interval of\n // serial `setTimeout` calls can be individually delayed, which delays\n // scheduling the next `setTimeout`, and so on. `setInterval` attempts to\n // guarantee the interval callback will be invoked more precisely to the\n // interval period, regardless of load.\n //\n // Therefore, we use `setInterval` to schedule single and repeat actions.\n // If the action reschedules itself with the same delay, the interval is not\n // canceled. If the action doesn't reschedule, or reschedules with a\n // different delay, the interval will be canceled after scheduled callback\n // execution.\n //\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n\n // Set the pending flag indicating that this action has been scheduled, or\n // has recursively rescheduled itself.\n this.pending = true;\n\n this.delay = delay;\n // If this action has already an async Id, don't request a new one.\n this.id = this.id ?? this.requestAsyncId(scheduler, this.id, delay);\n\n return this;\n }\n\n protected requestAsyncId(scheduler: AsyncScheduler, _id?: TimerHandle, delay: number = 0): TimerHandle {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n\n protected recycleAsyncId(_scheduler: AsyncScheduler, id?: TimerHandle, delay: number | null = 0): TimerHandle | undefined {\n // If this action is rescheduled with the same delay time, don't clear the interval id.\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n // Otherwise, if the action's delay time is different from the current delay,\n // or the action has been rescheduled before it's executed, clear the interval id\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n\n return undefined;\n }\n\n /**\n * Immediately executes this action and the `work` it contains.\n * @return {any}\n */\n public execute(state: T, delay: number): any {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n } else if (this.pending === false && this.id != null) {\n // Dequeue if the action didn't reschedule itself. Don't call\n // unsubscribe(), because the action could reschedule later.\n // For example:\n // ```\n // scheduler.schedule(function doWork(counter) {\n // /* ... I'm a busy worker bee ... */\n // var originalAction = this;\n // /* wait 100ms before rescheduling the action */\n // setTimeout(function () {\n // originalAction.schedule(counter + 1);\n // }, 100);\n // }, 1000);\n // ```\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n\n protected _execute(state: T, _delay: number): any {\n let errored: boolean = false;\n let errorValue: any;\n try {\n this.work(state);\n } catch (e) {\n errored = true;\n // HACK: Since code elsewhere is relying on the \"truthiness\" of the\n // return here, we can't have it return \"\" or 0 or false.\n // TODO: Clean this up when we refactor schedulers mid-version-8 or so.\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n\n unsubscribe() {\n if (!this.closed) {\n const { id, scheduler } = this;\n const { actions } = scheduler;\n\n this.work = this.state = this.scheduler = null!;\n this.pending = false;\n\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n\n this.delay = null!;\n super.unsubscribe();\n }\n }\n}\n", "import { Action } from './scheduler/Action';\nimport { Subscription } from './Subscription';\nimport { SchedulerLike, SchedulerAction } from './types';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * An execution context and a data structure to order tasks and schedule their\n * execution. Provides a notion of (potentially virtual) time, through the\n * `now()` getter method.\n *\n * Each unit of work in a Scheduler is called an `Action`.\n *\n * ```ts\n * class Scheduler {\n * now(): number;\n * schedule(work, delay?, state?): Subscription;\n * }\n * ```\n *\n * @class Scheduler\n * @deprecated Scheduler is an internal implementation detail of RxJS, and\n * should not be used directly. Rather, create your own class and implement\n * {@link SchedulerLike}. Will be made internal in v8.\n */\nexport class Scheduler implements SchedulerLike {\n public static now: () => number = dateTimestampProvider.now;\n\n constructor(private schedulerActionCtor: typeof Action, now: () => number = Scheduler.now) {\n this.now = now;\n }\n\n /**\n * A getter method that returns a number representing the current time\n * (at the time this function was called) according to the scheduler's own\n * internal clock.\n * @return {number} A number that represents the current time. May or may not\n * have a relation to wall-clock time. May or may not refer to a time unit\n * (e.g. milliseconds).\n */\n public now: () => number;\n\n /**\n * Schedules a function, `work`, for execution. May happen at some point in\n * the future, according to the `delay` parameter, if specified. May be passed\n * some context object, `state`, which will be passed to the `work` function.\n *\n * The given arguments will be processed an stored as an Action object in a\n * queue of actions.\n *\n * @param {function(state: ?T): ?Subscription} work A function representing a\n * task, or some unit of work to be executed by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler itself.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @return {Subscription} A subscription in order to be able to unsubscribe\n * the scheduled work.\n */\n public schedule<T>(work: (this: SchedulerAction<T>, state?: T) => void, delay: number = 0, state?: T): Subscription {\n return new this.schedulerActionCtor<T>(this, work).schedule(state, delay);\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Action } from './Action';\nimport { AsyncAction } from './AsyncAction';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncScheduler extends Scheduler {\n public actions: Array<AsyncAction<any>> = [];\n /**\n * A flag to indicate whether the Scheduler is currently executing a batch of\n * queued actions.\n * @type {boolean}\n * @internal\n */\n public _active: boolean = false;\n /**\n * An internal ID used to track the latest asynchronous task such as those\n * coming from `setTimeout`, `setInterval`, `requestAnimationFrame`, and\n * others.\n * @type {any}\n * @internal\n */\n public _scheduled: TimerHandle | undefined;\n\n constructor(SchedulerAction: typeof Action, now: () => number = Scheduler.now) {\n super(SchedulerAction, now);\n }\n\n public flush(action: AsyncAction<any>): void {\n const { actions } = this;\n\n if (this._active) {\n actions.push(action);\n return;\n }\n\n let error: any;\n this._active = true;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions.shift()!)); // exhaust the scheduler queue\n\n this._active = false;\n\n if (error) {\n while ((action = actions.shift()!)) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\n/**\n *\n * Async Scheduler\n *\n * <span class=\"informal\">Schedule task as if you used setTimeout(task, duration)</span>\n *\n * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript\n * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating\n * in intervals.\n *\n * If you just want to \"defer\" task, that is to perform it right after currently\n * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),\n * better choice will be the {@link asapScheduler} scheduler.\n *\n * ## Examples\n * Use async scheduler to delay task\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * const task = () => console.log('it works!');\n *\n * asyncScheduler.schedule(task, 2000);\n *\n * // After 2 seconds logs:\n * // \"it works!\"\n * ```\n *\n * Use async scheduler to repeat task in intervals\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * function task(state) {\n * console.log(state);\n * this.schedule(state + 1, 1000); // `this` references currently executing Action,\n * // which we reschedule with new state and delay\n * }\n *\n * asyncScheduler.schedule(task, 3000, 0);\n *\n * // Logs:\n * // 0 after 3s\n * // 1 after 4s\n * // 2 after 5s\n * // 3 after 6s\n * ```\n */\n\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\n\n/**\n * @deprecated Renamed to {@link asyncScheduler}. Will be removed in v8.\n */\nexport const async = asyncScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { Subscription } from '../Subscription';\nimport { QueueScheduler } from './QueueScheduler';\nimport { SchedulerAction } from '../types';\nimport { TimerHandle } from './timerHandle';\n\nexport class QueueAction<T> extends AsyncAction<T> {\n constructor(protected scheduler: QueueScheduler, protected work: (this: SchedulerAction<T>, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (delay > 0) {\n return super.schedule(state, delay);\n }\n this.delay = delay;\n this.state = state;\n this.scheduler.flush(this);\n return this;\n }\n\n public execute(state: T, delay: number): any {\n return delay > 0 || this.closed ? super.execute(state, delay) : this._execute(state, delay);\n }\n\n protected requestAsyncId(scheduler: QueueScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n\n if ((delay != null && delay > 0) || (delay == null && this.delay > 0)) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n\n // Otherwise flush the scheduler starting with this action.\n scheduler.flush(this);\n\n // HACK: In the past, this was returning `void`. However, `void` isn't a valid\n // `TimerHandle`, and generally the return value here isn't really used. So the\n // compromise is to return `0` which is both \"falsy\" and a valid `TimerHandle`,\n // as opposed to refactoring every other instanceo of `requestAsyncId`.\n return 0;\n }\n}\n", "import { AsyncScheduler } from './AsyncScheduler';\n\nexport class QueueScheduler extends AsyncScheduler {\n}\n", "import { QueueAction } from './QueueAction';\nimport { QueueScheduler } from './QueueScheduler';\n\n/**\n *\n * Queue Scheduler\n *\n * <span class=\"informal\">Put every next task on a queue, instead of executing it immediately</span>\n *\n * `queue` scheduler, when used with delay, behaves the same as {@link asyncScheduler} scheduler.\n *\n * When used without delay, it schedules given task synchronously - executes it right when\n * it is scheduled. However when called recursively, that is when inside the scheduled task,\n * another task is scheduled with queue scheduler, instead of executing immediately as well,\n * that task will be put on a queue and wait for current one to finish.\n *\n * This means that when you execute task with `queue` scheduler, you are sure it will end\n * before any other task scheduled with that scheduler will start.\n *\n * ## Examples\n * Schedule recursively first, then do something\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(() => {\n * queueScheduler.schedule(() => console.log('second')); // will not happen now, but will be put on a queue\n *\n * console.log('first');\n * });\n *\n * // Logs:\n * // \"first\"\n * // \"second\"\n * ```\n *\n * Reschedule itself recursively\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(function(state) {\n * if (state !== 0) {\n * console.log('before', state);\n * this.schedule(state - 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * console.log('after', state);\n * }\n * }, 0, 3);\n *\n * // In scheduler that runs recursively, you would expect:\n * // \"before\", 3\n * // \"before\", 2\n * // \"before\", 1\n * // \"after\", 1\n * // \"after\", 2\n * // \"after\", 3\n *\n * // But with queue it logs:\n * // \"before\", 3\n * // \"after\", 3\n * // \"before\", 2\n * // \"after\", 2\n * // \"before\", 1\n * // \"after\", 1\n * ```\n */\n\nexport const queueScheduler = new QueueScheduler(QueueAction);\n\n/**\n * @deprecated Renamed to {@link queueScheduler}. Will be removed in v8.\n */\nexport const queue = queueScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nimport { SchedulerAction } from '../types';\nimport { animationFrameProvider } from './animationFrameProvider';\nimport { TimerHandle } from './timerHandle';\n\nexport class AnimationFrameAction<T> extends AsyncAction<T> {\n constructor(protected scheduler: AnimationFrameScheduler, protected work: (this: SchedulerAction<T>, state?: T) => void) {\n super(scheduler, work);\n }\n\n protected requestAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay is greater than 0, request as an async action.\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n // Push the action to the end of the scheduler queue.\n scheduler.actions.push(this);\n // If an animation frame has already been requested, don't request another\n // one. If an animation frame hasn't been requested yet, request one. Return\n // the current animation frame request id.\n return scheduler._scheduled || (scheduler._scheduled = animationFrameProvider.requestAnimationFrame(() => scheduler.flush(undefined)));\n }\n\n protected recycleAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle | undefined {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n // If the scheduler queue has no remaining actions with the same async id,\n // cancel the requested animation frame and set the scheduled flag to\n // undefined so the next AnimationFrameAction will request its own.\n const { actions } = scheduler;\n if (id != null && actions[actions.length - 1]?.id !== id) {\n animationFrameProvider.cancelAnimationFrame(id as number);\n scheduler._scheduled = undefined;\n }\n // Return undefined so the action knows to request a new async id if it's rescheduled.\n return undefined;\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\nexport class AnimationFrameScheduler extends AsyncScheduler {\n public flush(action?: AsyncAction<any>): void {\n this._active = true;\n // The async id that effects a call to flush is stored in _scheduled.\n // Before executing an action, it's necessary to check the action's async\n // id to determine whether it's supposed to be executed in the current\n // flush.\n // Previous implementations of this method used a count to determine this,\n // but that was unsound, as actions that are unsubscribed - i.e. cancelled -\n // are removed from the actions array and that can shift actions that are\n // scheduled to be executed in a subsequent flush into positions at which\n // they are executed within the current flush.\n const flushId = this._scheduled;\n this._scheduled = undefined;\n\n const { actions } = this;\n let error: any;\n action = action || actions.shift()!;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n\n this._active = false;\n\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\n\n/**\n *\n * Animation Frame Scheduler\n *\n * <span class=\"informal\">Perform task when `window.requestAnimationFrame` would fire</span>\n *\n * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler\n * behaviour.\n *\n * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.\n * It makes sure scheduled task will happen just before next browser content repaint,\n * thus performing animations as efficiently as possible.\n *\n * ## Example\n * Schedule div height animation\n * ```ts\n * // html: <div style=\"background: #0ff;\"></div>\n * import { animationFrameScheduler } from 'rxjs';\n *\n * const div = document.querySelector('div');\n *\n * animationFrameScheduler.schedule(function(height) {\n * div.style.height = height + \"px\";\n *\n * this.schedule(height + 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * }, 0, 0);\n *\n * // You will see a div element growing in height\n * ```\n */\n\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\n\n/**\n * @deprecated Renamed to {@link animationFrameScheduler}. Will be removed in v8.\n */\nexport const animationFrame = animationFrameScheduler;\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\n/**\n * A simple Observable that emits no items to the Observer and immediately\n * emits a complete notification.\n *\n * <span class=\"informal\">Just emits 'complete', and nothing else.</span>\n *\n * \n *\n * A simple Observable that only emits the complete notification. It can be used\n * for composing with other Observables, such as in a {@link mergeMap}.\n *\n * ## Examples\n *\n * Log complete notification\n *\n * ```ts\n * import { EMPTY } from 'rxjs';\n *\n * EMPTY.subscribe({\n * next: () => console.log('Next'),\n * complete: () => console.log('Complete!')\n * });\n *\n * // Outputs\n * // Complete!\n * ```\n *\n * Emit the number 7, then complete\n *\n * ```ts\n * import { EMPTY, startWith } from 'rxjs';\n *\n * const result = EMPTY.pipe(startWith(7));\n * result.subscribe(x => console.log(x));\n *\n * // Outputs\n * // 7\n * ```\n *\n * Map and flatten only odd numbers to the sequence `'a'`, `'b'`, `'c'`\n *\n * ```ts\n * import { interval, mergeMap, of, EMPTY } from 'rxjs';\n *\n * const interval$ = interval(1000);\n * const result = interval$.pipe(\n * mergeMap(x => x % 2 === 1 ? of('a', 'b', 'c') : EMPTY),\n * );\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following to the console:\n * // x is equal to the count on the interval, e.g. (0, 1, 2, 3, ...)\n * // x will occur every 1000ms\n * // if x % 2 is equal to 1, print a, b, c (each on its own)\n * // if x % 2 is not equal to 1, nothing will be output\n * ```\n *\n * @see {@link Observable}\n * @see {@link NEVER}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const EMPTY = new Observable<never>((subscriber) => subscriber.complete());\n\n/**\n * @param scheduler A {@link SchedulerLike} to use for scheduling\n * the emission of the complete notification.\n * @deprecated Replaced with the {@link EMPTY} constant or {@link scheduled} (e.g. `scheduled([], scheduler)`). Will be removed in v8.\n */\nexport function empty(scheduler?: SchedulerLike) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\n\nfunction emptyScheduled(scheduler: SchedulerLike) {\n return new Observable<never>((subscriber) => scheduler.schedule(() => subscriber.complete()));\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport function isScheduler(value: any): value is SchedulerLike {\n return value && isFunction(value.schedule);\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\n\nfunction last<T>(arr: T[]): T | undefined {\n return arr[arr.length - 1];\n}\n\nexport function popResultSelector(args: any[]): ((...args: unknown[]) => unknown) | undefined {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\n\nexport function popScheduler(args: any[]): SchedulerLike | undefined {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\n\nexport function popNumber(args: any[], defaultValue: number): number {\n return typeof last(args) === 'number' ? args.pop()! : defaultValue;\n}\n", "export const isArrayLike = (<T>(x: any): x is ArrayLike<T> => x && typeof x.length === 'number' && typeof x !== 'function');", "import { isFunction } from \"./isFunction\";\n\n/**\n * Tests to see if the object is \"thennable\".\n * @param value the object to test\n */\nexport function isPromise(value: any): value is PromiseLike<any> {\n return isFunction(value?.then);\n}\n", "import { InteropObservable } from '../types';\nimport { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being Observable (but not necessary an Rx Observable) */\nexport function isInteropObservable(input: any): input is InteropObservable<any> {\n return isFunction(input[Symbol_observable]);\n}\n", "import { isFunction } from './isFunction';\n\nexport function isAsyncIterable<T>(obj: any): obj is AsyncIterable<T> {\n return Symbol.asyncIterator && isFunction(obj?.[Symbol.asyncIterator]);\n}\n", "/**\n * Creates the TypeError to throw if an invalid object is passed to `from` or `scheduled`.\n * @param input The object that was passed.\n */\nexport function createInvalidObservableTypeError(input: any) {\n // TODO: We should create error codes that can be looked up, so this can be less verbose.\n return new TypeError(\n `You provided ${\n input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`\n } where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`\n );\n}\n", "export function getSymbolIterator(): symbol {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator' as any;\n }\n\n return Symbol.iterator;\n}\n\nexport const iterator = getSymbolIterator();\n", "import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being an Iterable */\nexport function isIterable(input: any): input is Iterable<any> {\n return isFunction(input?.[Symbol_iterator]);\n}\n", "import { ReadableStreamLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport async function* readableStreamLikeToAsyncGenerator<T>(readableStream: ReadableStreamLike<T>): AsyncGenerator<T> {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const { value, done } = await reader.read();\n if (done) {\n return;\n }\n yield value!;\n }\n } finally {\n reader.releaseLock();\n }\n}\n\nexport function isReadableStreamLike<T>(obj: any): obj is ReadableStreamLike<T> {\n // We don't want to use instanceof checks because they would return\n // false for instances from another Realm, like an <iframe>.\n return isFunction(obj?.getReader);\n}\n", "import { isArrayLike } from '../util/isArrayLike';\nimport { isPromise } from '../util/isPromise';\nimport { Observable } from '../Observable';\nimport { ObservableInput, ObservedValueOf, ReadableStreamLike } from '../types';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isIterable } from '../util/isIterable';\nimport { isReadableStreamLike, readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\nimport { Subscriber } from '../Subscriber';\nimport { isFunction } from '../util/isFunction';\nimport { reportUnhandledError } from '../util/reportUnhandledError';\nimport { observable as Symbol_observable } from '../symbol/observable';\n\nexport function innerFrom<O extends ObservableInput<any>>(input: O): Observable<ObservedValueOf<O>>;\nexport function innerFrom<T>(input: ObservableInput<T>): Observable<T> {\n if (input instanceof Observable) {\n return input;\n }\n if (input != null) {\n if (isInteropObservable(input)) {\n return fromInteropObservable(input);\n }\n if (isArrayLike(input)) {\n return fromArrayLike(input);\n }\n if (isPromise(input)) {\n return fromPromise(input);\n }\n if (isAsyncIterable(input)) {\n return fromAsyncIterable(input);\n }\n if (isIterable(input)) {\n return fromIterable(input);\n }\n if (isReadableStreamLike(input)) {\n return fromReadableStreamLike(input);\n }\n }\n\n throw createInvalidObservableTypeError(input);\n}\n\n/**\n * Creates an RxJS Observable from an object that implements `Symbol.observable`.\n * @param obj An object that properly implements `Symbol.observable`.\n */\nexport function fromInteropObservable<T>(obj: any) {\n return new Observable((subscriber: Subscriber<T>) => {\n const obs = obj[Symbol_observable]();\n if (isFunction(obs.subscribe)) {\n return obs.subscribe(subscriber);\n }\n // Should be caught by observable subscribe function error handling.\n throw new TypeError('Provided object does not correctly implement Symbol.observable');\n });\n}\n\n/**\n * Synchronously emits the values of an array like and completes.\n * This is exported because there are creation functions and operators that need to\n * make direct use of the same logic, and there's no reason to make them run through\n * `from` conditionals because we *know* they're dealing with an array.\n * @param array The array to emit values from\n */\nexport function fromArrayLike<T>(array: ArrayLike<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n // Loop over the array and emit each value. Note two things here:\n // 1. We're making sure that the subscriber is not closed on each loop.\n // This is so we don't continue looping over a very large array after\n // something like a `take`, `takeWhile`, or other synchronous unsubscription\n // has already unsubscribed.\n // 2. In this form, reentrant code can alter that array we're looping over.\n // This is a known issue, but considered an edge case. The alternative would\n // be to copy the array before executing the loop, but this has\n // performance implications.\n for (let i = 0; i < array.length && !subscriber.closed; i++) {\n subscriber.next(array[i]);\n }\n subscriber.complete();\n });\n}\n\nexport function fromPromise<T>(promise: PromiseLike<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n promise\n .then(\n (value) => {\n if (!subscriber.closed) {\n subscriber.next(value);\n subscriber.complete();\n }\n },\n (err: any) => subscriber.error(err)\n )\n .then(null, reportUnhandledError);\n });\n}\n\nexport function fromIterable<T>(iterable: Iterable<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n for (const value of iterable) {\n subscriber.next(value);\n if (subscriber.closed) {\n return;\n }\n }\n subscriber.complete();\n });\n}\n\nexport function fromAsyncIterable<T>(asyncIterable: AsyncIterable<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n process(asyncIterable, subscriber).catch((err) => subscriber.error(err));\n });\n}\n\nexport function fromReadableStreamLike<T>(readableStream: ReadableStreamLike<T>) {\n return fromAsyncIterable(readableStreamLikeToAsyncGenerator(readableStream));\n}\n\nasync function process<T>(asyncIterable: AsyncIterable<T>, subscriber: Subscriber<T>) {\n for await (const value of asyncIterable) {\n subscriber.next(value);\n // A side-effect may have closed our subscriber,\n // check before the next iteration.\n if (subscriber.closed) {\n return;\n }\n }\n subscriber.complete();\n}\n", "import { Subscription } from '../Subscription';\nimport { SchedulerAction, SchedulerLike } from '../types';\n\nexport function executeSchedule(\n parentSubscription: Subscription,\n scheduler: SchedulerLike,\n work: () => void,\n delay: number,\n repeat: true\n): void;\nexport function executeSchedule(\n parentSubscription: Subscription,\n scheduler: SchedulerLike,\n work: () => void,\n delay?: number,\n repeat?: false\n): Subscription;\n\nexport function executeSchedule(\n parentSubscription: Subscription,\n scheduler: SchedulerLike,\n work: () => void,\n delay = 0,\n repeat = false\n): Subscription | void {\n const scheduleSubscription = scheduler.schedule(function (this: SchedulerAction<any>) {\n work();\n if (repeat) {\n parentSubscription.add(this.schedule(null, delay));\n } else {\n this.unsubscribe();\n }\n }, delay);\n\n parentSubscription.add(scheduleSubscription);\n\n if (!repeat) {\n // Because user-land scheduler implementations are unlikely to properly reuse\n // Actions for repeat scheduling, we can't trust that the returned subscription\n // will control repeat subscription scenarios. So we're trying to avoid using them\n // incorrectly within this library.\n return scheduleSubscription;\n }\n}\n", "/** @prettier */\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { executeSchedule } from '../util/executeSchedule';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Re-emits all notifications from source Observable with specified scheduler.\n *\n * <span class=\"informal\">Ensure a specific scheduler is used, from outside of an Observable.</span>\n *\n * `observeOn` is an operator that accepts a scheduler as a first parameter, which will be used to reschedule\n * notifications emitted by the source Observable. It might be useful, if you do not have control over\n * internal scheduler of a given Observable, but want to control when its values are emitted nevertheless.\n *\n * Returned Observable emits the same notifications (nexted values, complete and error events) as the source Observable,\n * but rescheduled with provided scheduler. Note that this doesn't mean that source Observables internal\n * scheduler will be replaced in any way. Original scheduler still will be used, but when the source Observable emits\n * notification, it will be immediately scheduled again - this time with scheduler passed to `observeOn`.\n * An anti-pattern would be calling `observeOn` on Observable that emits lots of values synchronously, to split\n * that emissions into asynchronous chunks. For this to happen, scheduler would have to be passed into the source\n * Observable directly (usually into the operator that creates it). `observeOn` simply delays notifications a\n * little bit more, to ensure that they are emitted at expected moments.\n *\n * As a matter of fact, `observeOn` accepts second parameter, which specifies in milliseconds with what delay notifications\n * will be emitted. The main difference between {@link delay} operator and `observeOn` is that `observeOn`\n * will delay all notifications - including error notifications - while `delay` will pass through error\n * from source Observable immediately when it is emitted. In general it is highly recommended to use `delay` operator\n * for any kind of delaying of values in the stream, while using `observeOn` to specify which scheduler should be used\n * for notification emissions in general.\n *\n * ## Example\n *\n * Ensure values in subscribe are called just before browser repaint\n *\n * ```ts\n * import { interval, observeOn, animationFrameScheduler } from 'rxjs';\n *\n * const someDiv = document.createElement('div');\n * someDiv.style.cssText = 'width: 200px;background: #09c';\n * document.body.appendChild(someDiv);\n * const intervals = interval(10); // Intervals are scheduled\n * // with async scheduler by default...\n * intervals.pipe(\n * observeOn(animationFrameScheduler) // ...but we will observe on animationFrame\n * ) // scheduler to ensure smooth animation.\n * .subscribe(val => {\n * someDiv.style.height = val + 'px';\n * });\n * ```\n *\n * @see {@link delay}\n *\n * @param scheduler Scheduler that will be used to reschedule notifications from source Observable.\n * @param delay Number of milliseconds that states with what delay every notification should be rescheduled.\n * @return A function that returns an Observable that emits the same\n * notifications as the source Observable, but with provided scheduler.\n */\nexport function observeOn<T>(scheduler: SchedulerLike, delay = 0): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => executeSchedule(subscriber, scheduler, () => subscriber.next(value), delay),\n () => executeSchedule(subscriber, scheduler, () => subscriber.complete(), delay),\n (err) => executeSchedule(subscriber, scheduler, () => subscriber.error(err), delay)\n )\n );\n });\n}\n", "import { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { operate } from '../util/lift';\n\n/**\n * Asynchronously subscribes Observers to this Observable on the specified {@link SchedulerLike}.\n *\n * With `subscribeOn` you can decide what type of scheduler a specific Observable will be using when it is subscribed to.\n *\n * Schedulers control the speed and order of emissions to observers from an Observable stream.\n *\n * \n *\n * ## Example\n *\n * Given the following code:\n *\n * ```ts\n * import { of, merge } from 'rxjs';\n *\n * const a = of(1, 2, 3);\n * const b = of(4, 5, 6);\n *\n * merge(a, b).subscribe(console.log);\n *\n * // Outputs\n * // 1\n * // 2\n * // 3\n * // 4\n * // 5\n * // 6\n * ```\n *\n * Both Observable `a` and `b` will emit their values directly and synchronously once they are subscribed to.\n *\n * If we instead use the `subscribeOn` operator declaring that we want to use the {@link asyncScheduler} for values emitted by Observable `a`:\n *\n * ```ts\n * import { of, subscribeOn, asyncScheduler, merge } from 'rxjs';\n *\n * const a = of(1, 2, 3).pipe(subscribeOn(asyncScheduler));\n * const b = of(4, 5, 6);\n *\n * merge(a, b).subscribe(console.log);\n *\n * // Outputs\n * // 4\n * // 5\n * // 6\n * // 1\n * // 2\n * // 3\n * ```\n *\n * The reason for this is that Observable `b` emits its values directly and synchronously like before\n * but the emissions from `a` are scheduled on the event loop because we are now using the {@link asyncScheduler} for that specific Observable.\n *\n * @param scheduler The {@link SchedulerLike} to perform subscription actions on.\n * @param delay A delay to pass to the scheduler to delay subscriptions\n * @return A function that returns an Observable modified so that its\n * subscriptions happen on the specified {@link SchedulerLike}.\n */\nexport function subscribeOn<T>(scheduler: SchedulerLike, delay: number = 0): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n subscriber.add(scheduler.schedule(() => source.subscribe(subscriber), delay));\n });\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nimport { InteropObservable, SchedulerLike } from '../types';\n\nexport function scheduleObservable<T>(input: InteropObservable<T>, scheduler: SchedulerLike) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nimport { SchedulerLike } from '../types';\n\nexport function schedulePromise<T>(input: PromiseLike<T>, scheduler: SchedulerLike) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\nexport function scheduleArray<T>(input: ArrayLike<T>, scheduler: SchedulerLike) {\n return new Observable<T>((subscriber) => {\n // The current array index.\n let i = 0;\n // Start iterating over the array like on a schedule.\n return scheduler.schedule(function () {\n if (i === input.length) {\n // If we have hit the end of the array like in the\n // previous job, we can complete.\n subscriber.complete();\n } else {\n // Otherwise let's next the value at the current index,\n // then increment our index.\n subscriber.next(input[i++]);\n // If the last emission didn't cause us to close the subscriber\n // (via take or some side effect), reschedule the job and we'll\n // make another pass.\n if (!subscriber.closed) {\n this.schedule();\n }\n }\n });\n });\n}\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from '../util/isFunction';\nimport { executeSchedule } from '../util/executeSchedule';\n\n/**\n * Used in {@link scheduled} to create an observable from an Iterable.\n * @param input The iterable to create an observable from\n * @param scheduler The scheduler to use\n */\nexport function scheduleIterable<T>(input: Iterable<T>, scheduler: SchedulerLike) {\n return new Observable<T>((subscriber) => {\n let iterator: Iterator<T, T>;\n\n // Schedule the initial creation of the iterator from\n // the iterable. This is so the code in the iterable is\n // not called until the scheduled job fires.\n executeSchedule(subscriber, scheduler, () => {\n // Create the iterator.\n iterator = (input as any)[Symbol_iterator]();\n\n executeSchedule(\n subscriber,\n scheduler,\n () => {\n let value: T;\n let done: boolean | undefined;\n try {\n // Pull the value out of the iterator\n ({ value, done } = iterator.next());\n } catch (err) {\n // We got an error while pulling from the iterator\n subscriber.error(err);\n return;\n }\n\n if (done) {\n // If it is \"done\" we just complete. This mimics the\n // behavior of JavaScript's `for..of` consumption of\n // iterables, which will not emit the value from an iterator\n // result of `{ done: true: value: 'here' }`.\n subscriber.complete();\n } else {\n // The iterable is not done, emit the value.\n subscriber.next(value);\n }\n },\n 0,\n true\n );\n });\n\n // During finalization, if we see this iterator has a `return` method,\n // then we know it is a Generator, and not just an Iterator. So we call\n // the `return()` function. This will ensure that any `finally { }` blocks\n // inside of the generator we can hit will be hit properly.\n return () => isFunction(iterator?.return) && iterator.return();\n });\n}\n", "import { SchedulerLike } from '../types';\nimport { Observable } from '../Observable';\nimport { executeSchedule } from '../util/executeSchedule';\n\nexport function scheduleAsyncIterable<T>(input: AsyncIterable<T>, scheduler: SchedulerLike) {\n if (!input) {\n throw new Error('Iterable cannot be null');\n }\n return new Observable<T>((subscriber) => {\n executeSchedule(subscriber, scheduler, () => {\n const iterator = input[Symbol.asyncIterator]();\n executeSchedule(\n subscriber,\n scheduler,\n () => {\n iterator.next().then((result) => {\n if (result.done) {\n // This will remove the subscriptions from\n // the parent subscription.\n subscriber.complete();\n } else {\n subscriber.next(result.value);\n }\n });\n },\n 0,\n true\n );\n });\n });\n}\n", "import { SchedulerLike, ReadableStreamLike } from '../types';\nimport { Observable } from '../Observable';\nimport { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\n\nexport function scheduleReadableStreamLike<T>(input: ReadableStreamLike<T>, scheduler: SchedulerLike): Observable<T> {\n return scheduleAsyncIterable(readableStreamLikeToAsyncGenerator(input), scheduler);\n}\n", "import { scheduleObservable } from './scheduleObservable';\nimport { schedulePromise } from './schedulePromise';\nimport { scheduleArray } from './scheduleArray';\nimport { scheduleIterable } from './scheduleIterable';\nimport { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isPromise } from '../util/isPromise';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isIterable } from '../util/isIterable';\nimport { ObservableInput, SchedulerLike } from '../types';\nimport { Observable } from '../Observable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isReadableStreamLike } from '../util/isReadableStreamLike';\nimport { scheduleReadableStreamLike } from './scheduleReadableStreamLike';\n\n/**\n * Converts from a common {@link ObservableInput} type to an observable where subscription and emissions\n * are scheduled on the provided scheduler.\n *\n * @see {@link from}\n * @see {@link of}\n *\n * @param input The observable, array, promise, iterable, etc you would like to schedule\n * @param scheduler The scheduler to use to schedule the subscription and emissions from\n * the returned observable.\n */\nexport function scheduled<T>(input: ObservableInput<T>, scheduler: SchedulerLike): Observable<T> {\n if (input != null) {\n if (isInteropObservable(input)) {\n return scheduleObservable(input, scheduler);\n }\n if (isArrayLike(input)) {\n return scheduleArray(input, scheduler);\n }\n if (isPromise(input)) {\n return schedulePromise(input, scheduler);\n }\n if (isAsyncIterable(input)) {\n return scheduleAsyncIterable(input, scheduler);\n }\n if (isIterable(input)) {\n return scheduleIterable(input, scheduler);\n }\n if (isReadableStreamLike(input)) {\n return scheduleReadableStreamLike(input, scheduler);\n }\n }\n throw createInvalidObservableTypeError(input);\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInput, SchedulerLike, ObservedValueOf } from '../types';\nimport { scheduled } from '../scheduled/scheduled';\nimport { innerFrom } from './innerFrom';\n\nexport function from<O extends ObservableInput<any>>(input: O): Observable<ObservedValueOf<O>>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function from<O extends ObservableInput<any>>(input: O, scheduler: SchedulerLike | undefined): Observable<ObservedValueOf<O>>;\n\n/**\n * Creates an Observable from an Array, an array-like object, a Promise, an iterable object, or an Observable-like object.\n *\n * <span class=\"informal\">Converts almost anything to an Observable.</span>\n *\n * \n *\n * `from` converts various other objects and data types into Observables. It also converts a Promise, an array-like, or an\n * <a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#iterable\" target=\"_blank\">iterable</a>\n * object into an Observable that emits the items in that promise, array, or iterable. A String, in this context, is treated\n * as an array of characters. Observable-like objects (contains a function named with the ES2015 Symbol for Observable) can also be\n * converted through this operator.\n *\n * ## Examples\n *\n * Converts an array to an Observable\n *\n * ```ts\n * import { from } from 'rxjs';\n *\n * const array = [10, 20, 30];\n * const result = from(array);\n *\n * result.subscribe(x => console.log(x));\n *\n * // Logs:\n * // 10\n * // 20\n * // 30\n * ```\n *\n * Convert an infinite iterable (from a generator) to an Observable\n *\n * ```ts\n * import { from, take } from 'rxjs';\n *\n * function* generateDoubles(seed) {\n * let i = seed;\n * while (true) {\n * yield i;\n * i = 2 * i; // double it\n * }\n * }\n *\n * const iterator = generateDoubles(3);\n * const result = from(iterator).pipe(take(10));\n *\n * result.subscribe(x => console.log(x));\n *\n * // Logs:\n * // 3\n * // 6\n * // 12\n * // 24\n * // 48\n * // 96\n * // 192\n * // 384\n * // 768\n * // 1536\n * ```\n *\n * With `asyncScheduler`\n *\n * ```ts\n * import { from, asyncScheduler } from 'rxjs';\n *\n * console.log('start');\n *\n * const array = [10, 20, 30];\n * const result = from(array, asyncScheduler);\n *\n * result.subscribe(x => console.log(x));\n *\n * console.log('end');\n *\n * // Logs:\n * // 'start'\n * // 'end'\n * // 10\n * // 20\n * // 30\n * ```\n *\n * @see {@link fromEvent}\n * @see {@link fromEventPattern}\n *\n * @param {ObservableInput<T>} A subscription object, a Promise, an Observable-like,\n * an Array, an iterable, or an array-like object to be converted.\n * @param {SchedulerLike} An optional {@link SchedulerLike} on which to schedule the emission of values.\n * @return {Observable<T>}\n */\nexport function from<T>(input: ObservableInput<T>, scheduler?: SchedulerLike): Observable<T> {\n return scheduler ? scheduled(input, scheduler) : innerFrom(input);\n}\n", "import { SchedulerLike, ValueFromArray } from '../types';\nimport { Observable } from '../Observable';\nimport { popScheduler } from '../util/args';\nimport { from } from './from';\n\n// Devs are more likely to pass null or undefined than they are a scheduler\n// without accompanying values. To make things easier for (naughty) devs who\n// use the `strictNullChecks: false` TypeScript compiler option, these\n// overloads with explicit null and undefined values are included.\n\nexport function of(value: null): Observable<null>;\nexport function of(value: undefined): Observable<undefined>;\n\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function of(scheduler: SchedulerLike): Observable<never>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function of<A extends readonly unknown[]>(...valuesAndScheduler: [...A, SchedulerLike]): Observable<ValueFromArray<A>>;\n\nexport function of(): Observable<never>;\n/** @deprecated Do not specify explicit type parameters. Signatures with type parameters that cannot be inferred will be removed in v8. */\nexport function of<T>(): Observable<T>;\nexport function of<T>(value: T): Observable<T>;\nexport function of<A extends readonly unknown[]>(...values: A): Observable<ValueFromArray<A>>;\n\n/**\n * Converts the arguments to an observable sequence.\n *\n * <span class=\"informal\">Each argument becomes a `next` notification.</span>\n *\n * \n *\n * Unlike {@link from}, it does not do any flattening and emits each argument in whole\n * as a separate `next` notification.\n *\n * ## Examples\n *\n * Emit the values `10, 20, 30`\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * of(10, 20, 30)\n * .subscribe({\n * next: value => console.log('next:', value),\n * error: err => console.log('error:', err),\n * complete: () => console.log('the end'),\n * });\n *\n * // Outputs\n * // next: 10\n * // next: 20\n * // next: 30\n * // the end\n * ```\n *\n * Emit the array `[1, 2, 3]`\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * of([1, 2, 3])\n * .subscribe({\n * next: value => console.log('next:', value),\n * error: err => console.log('error:', err),\n * complete: () => console.log('the end'),\n * });\n *\n * // Outputs\n * // next: [1, 2, 3]\n * // the end\n * ```\n *\n * @see {@link from}\n * @see {@link range}\n *\n * @param {...T} values A comma separated list of arguments you want to be emitted\n * @return {Observable} An Observable that emits the arguments\n * described above and then completes.\n */\nexport function of<T>(...args: Array<T | SchedulerLike>): Observable<T> {\n const scheduler = popScheduler(args);\n return from(args as T[], scheduler);\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { SchedulerLike } from '../types';\nimport { isFunction } from '../util/isFunction';\n\n/**\n * Creates an observable that will create an error instance and push it to the consumer as an error\n * immediately upon subscription.\n *\n * <span class=\"informal\">Just errors and does nothing else</span>\n *\n * \n *\n * This creation function is useful for creating an observable that will create an error and error every\n * time it is subscribed to. Generally, inside of most operators when you might want to return an errored\n * observable, this is unnecessary. In most cases, such as in the inner return of {@link concatMap},\n * {@link mergeMap}, {@link defer}, and many others, you can simply throw the error, and RxJS will pick\n * that up and notify the consumer of the error.\n *\n * ## Example\n *\n * Create a simple observable that will create a new error with a timestamp and log it\n * and the message every time you subscribe to it\n *\n * ```ts\n * import { throwError } from 'rxjs';\n *\n * let errorCount = 0;\n *\n * const errorWithTimestamp$ = throwError(() => {\n * const error: any = new Error(`This is error number ${ ++errorCount }`);\n * error.timestamp = Date.now();\n * return error;\n * });\n *\n * errorWithTimestamp$.subscribe({\n * error: err => console.log(err.timestamp, err.message)\n * });\n *\n * errorWithTimestamp$.subscribe({\n * error: err => console.log(err.timestamp, err.message)\n * });\n *\n * // Logs the timestamp and a new error message for each subscription\n * ```\n *\n * ### Unnecessary usage\n *\n * Using `throwError` inside of an operator or creation function\n * with a callback, is usually not necessary\n *\n * ```ts\n * import { of, concatMap, timer, throwError } from 'rxjs';\n *\n * const delays$ = of(1000, 2000, Infinity, 3000);\n *\n * delays$.pipe(\n * concatMap(ms => {\n * if (ms < 10000) {\n * return timer(ms);\n * } else {\n * // This is probably overkill.\n * return throwError(() => new Error(`Invalid time ${ ms }`));\n * }\n * })\n * )\n * .subscribe({\n * next: console.log,\n * error: console.error\n * });\n * ```\n *\n * You can just throw the error instead\n *\n * ```ts\n * import { of, concatMap, timer } from 'rxjs';\n *\n * const delays$ = of(1000, 2000, Infinity, 3000);\n *\n * delays$.pipe(\n * concatMap(ms => {\n * if (ms < 10000) {\n * return timer(ms);\n * } else {\n * // Cleaner and easier to read for most folks.\n * throw new Error(`Invalid time ${ ms }`);\n * }\n * })\n * )\n * .subscribe({\n * next: console.log,\n * error: console.error\n * });\n * ```\n *\n * @param errorFactory A factory function that will create the error instance that is pushed.\n */\nexport function throwError(errorFactory: () => any): Observable<never>;\n\n/**\n * Returns an observable that will error with the specified error immediately upon subscription.\n *\n * @param error The error instance to emit\n * @deprecated Support for passing an error value will be removed in v8. Instead, pass a factory function to `throwError(() => new Error('test'))`. This is\n * because it will create the error at the moment it should be created and capture a more appropriate stack trace. If\n * for some reason you need to create the error ahead of time, you can still do that: `const err = new Error('test'); throwError(() => err);`.\n */\nexport function throwError(error: any): Observable<never>;\n\n/**\n * Notifies the consumer of an error using a given scheduler by scheduling it at delay `0` upon subscription.\n *\n * @param errorOrErrorFactory An error instance or error factory\n * @param scheduler A scheduler to use to schedule the error notification\n * @deprecated The `scheduler` parameter will be removed in v8.\n * Use `throwError` in combination with {@link observeOn}: `throwError(() => new Error('test')).pipe(observeOn(scheduler));`.\n * Details: https://rxjs.dev/deprecations/scheduler-argument\n */\nexport function throwError(errorOrErrorFactory: any, scheduler: SchedulerLike): Observable<never>;\n\nexport function throwError(errorOrErrorFactory: any, scheduler?: SchedulerLike): Observable<never> {\n const errorFactory = isFunction(errorOrErrorFactory) ? errorOrErrorFactory : () => errorOrErrorFactory;\n const init = (subscriber: Subscriber<never>) => subscriber.error(errorFactory());\n return new Observable(scheduler ? (subscriber) => scheduler.schedule(init as any, 0, subscriber) : init);\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface EmptyError extends Error {}\n\nexport interface EmptyErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): EmptyError;\n}\n\n/**\n * An error thrown when an Observable or a sequence was queried but has no\n * elements.\n *\n * @see {@link first}\n * @see {@link last}\n * @see {@link single}\n * @see {@link firstValueFrom}\n * @see {@link lastValueFrom}\n *\n * @class EmptyError\n */\nexport const EmptyError: EmptyErrorCtor = createErrorClass((_super) => function EmptyErrorImpl(this: any) {\n _super(this);\n this.name = 'EmptyError';\n this.message = 'no elements in sequence';\n});\n", "/**\n * Checks to see if a value is not only a `Date` object,\n * but a *valid* `Date` object that can be converted to a\n * number. For example, `new Date('blah')` is indeed an\n * `instanceof Date`, however it cannot be converted to a\n * number.\n */\nexport function isValidDate(value: any): value is Date {\n return value instanceof Date && !isNaN(value as any);\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\nexport function map<T, R>(project: (value: T, index: number) => R): OperatorFunction<T, R>;\n/** @deprecated Use a closure instead of a `thisArg`. Signatures accepting a `thisArg` will be removed in v8. */\nexport function map<T, R, A>(project: (this: A, value: T, index: number) => R, thisArg: A): OperatorFunction<T, R>;\n\n/**\n * Applies a given `project` function to each value emitted by the source\n * Observable, and emits the resulting values as an Observable.\n *\n * <span class=\"informal\">Like [Array.prototype.map()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map),\n * it passes each source value through a transformation function to get\n * corresponding output values.</span>\n *\n * \n *\n * Similar to the well known `Array.prototype.map` function, this operator\n * applies a projection to each value and emits that projection in the output\n * Observable.\n *\n * ## Example\n *\n * Map every click to the `clientX` position of that click\n *\n * ```ts\n * import { fromEvent, map } from 'rxjs';\n *\n * const clicks = fromEvent<PointerEvent>(document, 'click');\n * const positions = clicks.pipe(map(ev => ev.clientX));\n *\n * positions.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link mapTo}\n * @see {@link pluck}\n *\n * @param {function(value: T, index: number): R} project The function to apply\n * to each `value` emitted by the source Observable. The `index` parameter is\n * the number `i` for the i-th emission that has happened since the\n * subscription, starting from the number `0`.\n * @param {any} [thisArg] An optional argument to define what `this` is in the\n * `project` function.\n * @return A function that returns an Observable that emits the values from the\n * source Observable transformed by the given `project` function.\n */\nexport function map<T, R>(project: (value: T, index: number) => R, thisArg?: any): OperatorFunction<T, R> {\n return operate((source, subscriber) => {\n // The index of the value from the source. Used with projection.\n let index = 0;\n // Subscribe to the source, all errors and completions are sent along\n // to the consumer.\n source.subscribe(\n createOperatorSubscriber(subscriber, (value: T) => {\n // Call the projection function with the appropriate this context,\n // and send the resulting value to the consumer.\n subscriber.next(project.call(thisArg, value, index++));\n })\n );\n });\n}\n", "import { OperatorFunction } from \"../types\";\nimport { map } from \"../operators/map\";\n\nconst { isArray } = Array;\n\nfunction callOrApply<T, R>(fn: ((...values: T[]) => R), args: T|T[]): R {\n return isArray(args) ? fn(...args) : fn(args);\n}\n\n/**\n * Used in several -- mostly deprecated -- situations where we need to \n * apply a list of arguments or a single argument to a result selector.\n */\nexport function mapOneOrManyArgs<T, R>(fn: ((...values: T[]) => R)): OperatorFunction<T|T[], R> {\n return map(args => callOrApply(fn, args))\n}", "const { isArray } = Array;\nconst { getPrototypeOf, prototype: objectProto, keys: getKeys } = Object;\n\n/**\n * Used in functions where either a list of arguments, a single array of arguments, or a\n * dictionary of arguments can be returned. Returns an object with an `args` property with\n * the arguments in an array, if it is a dictionary, it will also return the `keys` in another\n * property.\n */\nexport function argsArgArrayOrObject<T, O extends Record<string, T>>(args: T[] | [O] | [T[]]): { args: T[]; keys: string[] | null } {\n if (args.length === 1) {\n const first = args[0];\n if (isArray(first)) {\n return { args: first, keys: null };\n }\n if (isPOJO(first)) {\n const keys = getKeys(first);\n return {\n args: keys.map((key) => first[key]),\n keys,\n };\n }\n }\n\n return { args: args as T[], keys: null };\n}\n\nfunction isPOJO(obj: any): obj is object {\n return obj && typeof obj === 'object' && getPrototypeOf(obj) === objectProto;\n}\n", "export function createObject(keys: string[], values: any[]) {\n return keys.reduce((result, key, i) => ((result[key] = values[i]), result), {} as any);\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInput, SchedulerLike, ObservedValueOf, ObservableInputTuple } from '../types';\nimport { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';\nimport { Subscriber } from '../Subscriber';\nimport { from } from './from';\nimport { identity } from '../util/identity';\nimport { Subscription } from '../Subscription';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { popResultSelector, popScheduler } from '../util/args';\nimport { createObject } from '../util/createObject';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { AnyCatcher } from '../AnyCatcher';\nimport { executeSchedule } from '../util/executeSchedule';\n\n// combineLatest(any)\n// We put this first because we need to catch cases where the user has supplied\n// _exactly `any`_ as the argument. Since `any` literally matches _anything_,\n// we don't want it to randomly hit one of the other type signatures below,\n// as we have no idea at build-time what type we should be returning when given an any.\n\n/**\n * You have passed `any` here, we can't figure out if it is\n * an array or an object, so you're getting `unknown`. Use better types.\n * @param arg Something typed as `any`\n */\nexport function combineLatest<T extends AnyCatcher>(arg: T): Observable<unknown>;\n\n// combineLatest([a, b, c])\nexport function combineLatest(sources: []): Observable<never>;\nexport function combineLatest<A extends readonly unknown[]>(sources: readonly [...ObservableInputTuple<A>]): Observable<A>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[], R>(\n sources: readonly [...ObservableInputTuple<A>],\n resultSelector: (...values: A) => R,\n scheduler: SchedulerLike\n): Observable<R>;\nexport function combineLatest<A extends readonly unknown[], R>(\n sources: readonly [...ObservableInputTuple<A>],\n resultSelector: (...values: A) => R\n): Observable<R>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[]>(\n sources: readonly [...ObservableInputTuple<A>],\n scheduler: SchedulerLike\n): Observable<A>;\n\n// combineLatest(a, b, c)\n/** @deprecated Pass an array of sources instead. The rest-parameters signature will be removed in v8. Details: https://rxjs.dev/deprecations/array-argument */\nexport function combineLatest<A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): Observable<A>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[], R>(\n ...sourcesAndResultSelectorAndScheduler: [...ObservableInputTuple<A>, (...values: A) => R, SchedulerLike]\n): Observable<R>;\n/** @deprecated Pass an array of sources instead. The rest-parameters signature will be removed in v8. Details: https://rxjs.dev/deprecations/array-argument */\nexport function combineLatest<A extends readonly unknown[], R>(\n ...sourcesAndResultSelector: [...ObservableInputTuple<A>, (...values: A) => R]\n): Observable<R>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[]>(\n ...sourcesAndScheduler: [...ObservableInputTuple<A>, SchedulerLike]\n): Observable<A>;\n\n// combineLatest({a, b, c})\nexport function combineLatest(sourcesObject: { [K in any]: never }): Observable<never>;\nexport function combineLatest<T extends Record<string, ObservableInput<any>>>(\n sourcesObject: T\n): Observable<{ [K in keyof T]: ObservedValueOf<T[K]> }>;\n\n/**\n * Combines multiple Observables to create an Observable whose values are\n * calculated from the latest values of each of its input Observables.\n *\n * <span class=\"informal\">Whenever any input Observable emits a value, it\n * computes a formula using the latest values from all the inputs, then emits\n * the output of that formula.</span>\n *\n * \n *\n * `combineLatest` combines the values from all the Observables passed in the\n * observables array. This is done by subscribing to each Observable in order and,\n * whenever any Observable emits, collecting an array of the most recent\n * values from each Observable. So if you pass `n` Observables to this operator,\n * the returned Observable will always emit an array of `n` values, in an order\n * corresponding to the order of the passed Observables (the value from the first Observable\n * will be at index 0 of the array and so on).\n *\n * Static version of `combineLatest` accepts an array of Observables. Note that an array of\n * Observables is a good choice, if you don't know beforehand how many Observables\n * you will combine. Passing an empty array will result in an Observable that\n * completes immediately.\n *\n * To ensure the output array always has the same length, `combineLatest` will\n * actually wait for all input Observables to emit at least once,\n * before it starts emitting results. This means if some Observable emits\n * values before other Observables started emitting, all these values but the last\n * will be lost. On the other hand, if some Observable does not emit a value but\n * completes, resulting Observable will complete at the same moment without\n * emitting anything, since it will now be impossible to include a value from the\n * completed Observable in the resulting array. Also, if some input Observable does\n * not emit any value and never completes, `combineLatest` will also never emit\n * and never complete, since, again, it will wait for all streams to emit some\n * value.\n *\n * If at least one Observable was passed to `combineLatest` and all passed Observables\n * emitted something, the resulting Observable will complete when all combined\n * streams complete. So even if some Observable completes, the result of\n * `combineLatest` will still emit values when other Observables do. In case\n * of a completed Observable, its value from now on will always be the last\n * emitted value. On the other hand, if any Observable errors, `combineLatest`\n * will error immediately as well, and all other Observables will be unsubscribed.\n *\n * ## Examples\n *\n * Combine two timer Observables\n *\n * ```ts\n * import { timer, combineLatest } from 'rxjs';\n *\n * const firstTimer = timer(0, 1000); // emit 0, 1, 2... after every second, starting from now\n * const secondTimer = timer(500, 1000); // emit 0, 1, 2... after every second, starting 0,5s from now\n * const combinedTimers = combineLatest([firstTimer, secondTimer]);\n * combinedTimers.subscribe(value => console.log(value));\n * // Logs\n * // [0, 0] after 0.5s\n * // [1, 0] after 1s\n * // [1, 1] after 1.5s\n * // [2, 1] after 2s\n * ```\n *\n * Combine a dictionary of Observables\n *\n * ```ts\n * import { of, delay, startWith, combineLatest } from 'rxjs';\n *\n * const observables = {\n * a: of(1).pipe(delay(1000), startWith(0)),\n * b: of(5).pipe(delay(5000), startWith(0)),\n * c: of(10).pipe(delay(10000), startWith(0))\n * };\n * const combined = combineLatest(observables);\n * combined.subscribe(value => console.log(value));\n * // Logs\n * // { a: 0, b: 0, c: 0 } immediately\n * // { a: 1, b: 0, c: 0 } after 1s\n * // { a: 1, b: 5, c: 0 } after 5s\n * // { a: 1, b: 5, c: 10 } after 10s\n * ```\n *\n * Combine an array of Observables\n *\n * ```ts\n * import { of, delay, startWith, combineLatest } from 'rxjs';\n *\n * const observables = [1, 5, 10].map(\n * n => of(n).pipe(\n * delay(n * 1000), // emit 0 and then emit n after n seconds\n * startWith(0)\n * )\n * );\n * const combined = combineLatest(observables);\n * combined.subscribe(value => console.log(value));\n * // Logs\n * // [0, 0, 0] immediately\n * // [1, 0, 0] after 1s\n * // [1, 5, 0] after 5s\n * // [1, 5, 10] after 10s\n * ```\n *\n * Use map operator to dynamically calculate the Body-Mass Index\n *\n * ```ts\n * import { of, combineLatest, map } from 'rxjs';\n *\n * const weight = of(70, 72, 76, 79, 75);\n * const height = of(1.76, 1.77, 1.78);\n * const bmi = combineLatest([weight, height]).pipe(\n * map(([w, h]) => w / (h * h)),\n * );\n * bmi.subscribe(x => console.log('BMI is ' + x));\n *\n * // With output to console:\n * // BMI is 24.212293388429753\n * // BMI is 23.93948099205209\n * // BMI is 23.671253629592222\n * ```\n *\n * @see {@link combineLatestAll}\n * @see {@link merge}\n * @see {@link withLatestFrom}\n *\n * @param {ObservableInput} [observables] An array of input Observables to combine with each other.\n * An array of Observables must be given as the first argument.\n * @param {function} [project] An optional function to project the values from\n * the combined latest values into a new value on the output Observable.\n * @param {SchedulerLike} [scheduler=null] The {@link SchedulerLike} to use for subscribing to\n * each input Observable.\n * @return {Observable} An Observable of projected values from the most recent\n * values from each input Observable, or an array of the most recent values from\n * each input Observable.\n */\nexport function combineLatest<O extends ObservableInput<any>, R>(...args: any[]): Observable<R> | Observable<ObservedValueOf<O>[]> {\n const scheduler = popScheduler(args);\n const resultSelector = popResultSelector(args);\n\n const { args: observables, keys } = argsArgArrayOrObject(args);\n\n if (observables.length === 0) {\n // If no observables are passed, or someone has passed an empty array\n // of observables, or even an empty object POJO, we need to just\n // complete (EMPTY), but we have to honor the scheduler provided if any.\n return from([], scheduler as any);\n }\n\n const result = new Observable<ObservedValueOf<O>[]>(\n combineLatestInit(\n observables as ObservableInput<ObservedValueOf<O>>[],\n scheduler,\n keys\n ? // A handler for scrubbing the array of args into a dictionary.\n (values) => createObject(keys, values)\n : // A passthrough to just return the array\n identity\n )\n );\n\n return resultSelector ? (result.pipe(mapOneOrManyArgs(resultSelector)) as Observable<R>) : result;\n}\n\nexport function combineLatestInit(\n observables: ObservableInput<any>[],\n scheduler?: SchedulerLike,\n valueTransform: (values: any[]) => any = identity\n) {\n return (subscriber: Subscriber<any>) => {\n // The outer subscription. We're capturing this in a function\n // because we may have to schedule it.\n maybeSchedule(\n scheduler,\n () => {\n const { length } = observables;\n // A store for the values each observable has emitted so far. We match observable to value on index.\n const values = new Array(length);\n // The number of currently active subscriptions, as they complete, we decrement this number to see if\n // we are all done combining values, so we can complete the result.\n let active = length;\n // The number of inner sources that still haven't emitted the first value\n // We need to track this because all sources need to emit one value in order\n // to start emitting values.\n let remainingFirstValues = length;\n // The loop to kick off subscription. We're keying everything on index `i` to relate the observables passed\n // in to the slot in the output array or the key in the array of keys in the output dictionary.\n for (let i = 0; i < length; i++) {\n maybeSchedule(\n scheduler,\n () => {\n const source = from(observables[i], scheduler as any);\n let hasFirstValue = false;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // When we get a value, record it in our set of values.\n values[i] = value;\n if (!hasFirstValue) {\n // If this is our first value, record that.\n hasFirstValue = true;\n remainingFirstValues--;\n }\n if (!remainingFirstValues) {\n // We're not waiting for any more\n // first values, so we can emit!\n subscriber.next(valueTransform(values.slice()));\n }\n },\n () => {\n if (!--active) {\n // We only complete the result if we have no more active\n // inner observables.\n subscriber.complete();\n }\n }\n )\n );\n },\n subscriber\n );\n }\n },\n subscriber\n );\n };\n}\n\n/**\n * A small utility to handle the couple of locations where we want to schedule if a scheduler was provided,\n * but we don't if there was no scheduler.\n */\nfunction maybeSchedule(scheduler: SchedulerLike | undefined, execute: () => void, subscription: Subscription) {\n if (scheduler) {\n executeSchedule(subscription, scheduler, execute);\n } else {\n execute();\n }\n}\n", "import { Observable } from '../Observable';\nimport { innerFrom } from '../observable/innerFrom';\nimport { Subscriber } from '../Subscriber';\nimport { ObservableInput, SchedulerLike } from '../types';\nimport { executeSchedule } from '../util/executeSchedule';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * A process embodying the general \"merge\" strategy. This is used in\n * `mergeMap` and `mergeScan` because the logic is otherwise nearly identical.\n * @param source The original source observable\n * @param subscriber The consumer subscriber\n * @param project The projection function to get our inner sources\n * @param concurrent The number of concurrent inner subscriptions\n * @param onBeforeNext Additional logic to apply before nexting to our consumer\n * @param expand If `true` this will perform an \"expand\" strategy, which differs only\n * in that it recurses, and the inner subscription must be schedule-able.\n * @param innerSubScheduler A scheduler to use to schedule inner subscriptions,\n * this is to support the expand strategy, mostly, and should be deprecated\n */\nexport function mergeInternals<T, R>(\n source: Observable<T>,\n subscriber: Subscriber<R>,\n project: (value: T, index: number) => ObservableInput<R>,\n concurrent: number,\n onBeforeNext?: (innerValue: R) => void,\n expand?: boolean,\n innerSubScheduler?: SchedulerLike,\n additionalFinalizer?: () => void\n) {\n // Buffered values, in the event of going over our concurrency limit\n const buffer: T[] = [];\n // The number of active inner subscriptions.\n let active = 0;\n // An index to pass to our accumulator function\n let index = 0;\n // Whether or not the outer source has completed.\n let isComplete = false;\n\n /**\n * Checks to see if we can complete our result or not.\n */\n const checkComplete = () => {\n // If the outer has completed, and nothing is left in the buffer,\n // and we don't have any active inner subscriptions, then we can\n // Emit the state and complete.\n if (isComplete && !buffer.length && !active) {\n subscriber.complete();\n }\n };\n\n // If we're under our concurrency limit, just start the inner subscription, otherwise buffer and wait.\n const outerNext = (value: T) => (active < concurrent ? doInnerSub(value) : buffer.push(value));\n\n const doInnerSub = (value: T) => {\n // If we're expanding, we need to emit the outer values and the inner values\n // as the inners will \"become outers\" in a way as they are recursively fed\n // back to the projection mechanism.\n expand && subscriber.next(value as any);\n\n // Increment the number of active subscriptions so we can track it\n // against our concurrency limit later.\n active++;\n\n // A flag used to show that the inner observable completed.\n // This is checked during finalization to see if we should\n // move to the next item in the buffer, if there is on.\n let innerComplete = false;\n\n // Start our inner subscription.\n innerFrom(project(value, index++)).subscribe(\n createOperatorSubscriber(\n subscriber,\n (innerValue) => {\n // `mergeScan` has additional handling here. For example\n // taking the inner value and updating state.\n onBeforeNext?.(innerValue);\n\n if (expand) {\n // If we're expanding, then just recurse back to our outer\n // handler. It will emit the value first thing.\n outerNext(innerValue as any);\n } else {\n // Otherwise, emit the inner value.\n subscriber.next(innerValue);\n }\n },\n () => {\n // Flag that we have completed, so we know to check the buffer\n // during finalization.\n innerComplete = true;\n },\n // Errors are passed to the destination.\n undefined,\n () => {\n // During finalization, if the inner completed (it wasn't errored or\n // cancelled), then we want to try the next item in the buffer if\n // there is one.\n if (innerComplete) {\n // We have to wrap this in a try/catch because it happens during\n // finalization, possibly asynchronously, and we want to pass\n // any errors that happen (like in a projection function) to\n // the outer Subscriber.\n try {\n // INNER SOURCE COMPLETE\n // Decrement the active count to ensure that the next time\n // we try to call `doInnerSub`, the number is accurate.\n active--;\n // If we have more values in the buffer, try to process those\n // Note that this call will increment `active` ahead of the\n // next conditional, if there were any more inner subscriptions\n // to start.\n while (buffer.length && active < concurrent) {\n const bufferedValue = buffer.shift()!;\n // Particularly for `expand`, we need to check to see if a scheduler was provided\n // for when we want to start our inner subscription. Otherwise, we just start\n // are next inner subscription.\n if (innerSubScheduler) {\n executeSchedule(subscriber, innerSubScheduler, () => doInnerSub(bufferedValue));\n } else {\n doInnerSub(bufferedValue);\n }\n }\n // Check to see if we can complete, and complete if so.\n checkComplete();\n } catch (err) {\n subscriber.error(err);\n }\n }\n }\n )\n );\n };\n\n // Subscribe to our source observable.\n source.subscribe(\n createOperatorSubscriber(subscriber, outerNext, () => {\n // Outer completed, make a note of it, and check to see if we can complete everything.\n isComplete = true;\n checkComplete();\n })\n );\n\n // Additional finalization (for when the destination is torn down).\n // Other finalization is added implicitly via subscription above.\n return () => {\n additionalFinalizer?.();\n };\n}\n", "import { ObservableInput, OperatorFunction, ObservedValueOf } from '../types';\nimport { map } from './map';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { mergeInternals } from './mergeInternals';\nimport { isFunction } from '../util/isFunction';\n\n/* tslint:disable:max-line-length */\nexport function mergeMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n concurrent?: number\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function mergeMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: undefined,\n concurrent?: number\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function mergeMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: (outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R,\n concurrent?: number\n): OperatorFunction<T, R>;\n/* tslint:enable:max-line-length */\n\n/**\n * Projects each source value to an Observable which is merged in the output\n * Observable.\n *\n * <span class=\"informal\">Maps each value to an Observable, then flattens all of\n * these inner Observables using {@link mergeAll}.</span>\n *\n * \n *\n * Returns an Observable that emits items based on applying a function that you\n * supply to each item emitted by the source Observable, where that function\n * returns an Observable, and then merging those resulting Observables and\n * emitting the results of this merger.\n *\n * ## Example\n *\n * Map and flatten each letter to an Observable ticking every 1 second\n *\n * ```ts\n * import { of, mergeMap, interval, map } from 'rxjs';\n *\n * const letters = of('a', 'b', 'c');\n * const result = letters.pipe(\n * mergeMap(x => interval(1000).pipe(map(i => x + i)))\n * );\n *\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // a0\n * // b0\n * // c0\n * // a1\n * // b1\n * // c1\n * // continues to list a, b, c every second with respective ascending integers\n * ```\n *\n * @see {@link concatMap}\n * @see {@link exhaustMap}\n * @see {@link merge}\n * @see {@link mergeAll}\n * @see {@link mergeMapTo}\n * @see {@link mergeScan}\n * @see {@link switchMap}\n *\n * @param {function(value: T, ?index: number): ObservableInput} project A function\n * that, when applied to an item emitted by the source Observable, returns an\n * Observable.\n * @param {number} [concurrent=Infinity] Maximum number of input\n * Observables being subscribed to concurrently.\n * @return A function that returns an Observable that emits the result of\n * applying the projection function (and the optional deprecated\n * `resultSelector`) to each item emitted by the source Observable and merging\n * the results of the Observables obtained from this transformation.\n */\nexport function mergeMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector?: ((outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R) | number,\n concurrent: number = Infinity\n): OperatorFunction<T, ObservedValueOf<O> | R> {\n if (isFunction(resultSelector)) {\n // DEPRECATED PATH\n return mergeMap((a, i) => map((b: any, ii: number) => resultSelector(a, b, i, ii))(innerFrom(project(a, i))), concurrent);\n } else if (typeof resultSelector === 'number') {\n concurrent = resultSelector;\n }\n\n return operate((source, subscriber) => mergeInternals(source, subscriber, project, concurrent));\n}\n", "import { mergeMap } from './mergeMap';\nimport { identity } from '../util/identity';\nimport { OperatorFunction, ObservableInput, ObservedValueOf } from '../types';\n\n/**\n * Converts a higher-order Observable into a first-order Observable which\n * concurrently delivers all values that are emitted on the inner Observables.\n *\n * <span class=\"informal\">Flattens an Observable-of-Observables.</span>\n *\n * \n *\n * `mergeAll` subscribes to an Observable that emits Observables, also known as\n * a higher-order Observable. Each time it observes one of these emitted inner\n * Observables, it subscribes to that and delivers all the values from the\n * inner Observable on the output Observable. The output Observable only\n * completes once all inner Observables have completed. Any error delivered by\n * a inner Observable will be immediately emitted on the output Observable.\n *\n * ## Examples\n *\n * Spawn a new interval Observable for each click event, and blend their outputs as one Observable\n *\n * ```ts\n * import { fromEvent, map, interval, mergeAll } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const higherOrder = clicks.pipe(map(() => interval(1000)));\n * const firstOrder = higherOrder.pipe(mergeAll());\n *\n * firstOrder.subscribe(x => console.log(x));\n * ```\n *\n * Count from 0 to 9 every second for each click, but only allow 2 concurrent timers\n *\n * ```ts\n * import { fromEvent, map, interval, take, mergeAll } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const higherOrder = clicks.pipe(\n * map(() => interval(1000).pipe(take(10)))\n * );\n * const firstOrder = higherOrder.pipe(mergeAll(2));\n *\n * firstOrder.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link combineLatestAll}\n * @see {@link concatAll}\n * @see {@link exhaustAll}\n * @see {@link merge}\n * @see {@link mergeMap}\n * @see {@link mergeMapTo}\n * @see {@link mergeScan}\n * @see {@link switchAll}\n * @see {@link switchMap}\n * @see {@link zipAll}\n *\n * @param {number} [concurrent=Infinity] Maximum number of inner\n * Observables being subscribed to concurrently.\n * @return A function that returns an Observable that emits values coming from\n * all the inner Observables emitted by the source Observable.\n */\nexport function mergeAll<O extends ObservableInput<any>>(concurrent: number = Infinity): OperatorFunction<O, ObservedValueOf<O>> {\n return mergeMap(identity, concurrent);\n}\n", "import { mergeAll } from './mergeAll';\nimport { OperatorFunction, ObservableInput, ObservedValueOf } from '../types';\n\n/**\n * Converts a higher-order Observable into a first-order Observable by\n * concatenating the inner Observables in order.\n *\n * <span class=\"informal\">Flattens an Observable-of-Observables by putting one\n * inner Observable after the other.</span>\n *\n * \n *\n * Joins every Observable emitted by the source (a higher-order Observable), in\n * a serial fashion. It subscribes to each inner Observable only after the\n * previous inner Observable has completed, and merges all of their values into\n * the returned observable.\n *\n * __Warning:__ If the source Observable emits Observables quickly and\n * endlessly, and the inner Observables it emits generally complete slower than\n * the source emits, you can run into memory issues as the incoming Observables\n * collect in an unbounded buffer.\n *\n * Note: `concatAll` is equivalent to `mergeAll` with concurrency parameter set\n * to `1`.\n *\n * ## Example\n *\n * For each click event, tick every second from 0 to 3, with no concurrency\n *\n * ```ts\n * import { fromEvent, map, interval, take, concatAll } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const higherOrder = clicks.pipe(\n * map(() => interval(1000).pipe(take(4)))\n * );\n * const firstOrder = higherOrder.pipe(concatAll());\n * firstOrder.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // (results are not concurrent)\n * // For every click on the \"document\" it will emit values 0 to 3 spaced\n * // on a 1000ms interval\n * // one click = 1000ms-> 0 -1000ms-> 1 -1000ms-> 2 -1000ms-> 3\n * ```\n *\n * @see {@link combineLatestAll}\n * @see {@link concat}\n * @see {@link concatMap}\n * @see {@link concatMapTo}\n * @see {@link exhaustAll}\n * @see {@link mergeAll}\n * @see {@link switchAll}\n * @see {@link switchMap}\n * @see {@link zipAll}\n *\n * @return A function that returns an Observable emitting values from all the\n * inner Observables concatenated.\n */\nexport function concatAll<O extends ObservableInput<any>>(): OperatorFunction<O, ObservedValueOf<O>> {\n return mergeAll(1);\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInputTuple, SchedulerLike } from '../types';\nimport { concatAll } from '../operators/concatAll';\nimport { popScheduler } from '../util/args';\nimport { from } from './from';\n\nexport function concat<T extends readonly unknown[]>(...inputs: [...ObservableInputTuple<T>]): Observable<T[number]>;\nexport function concat<T extends readonly unknown[]>(\n ...inputsAndScheduler: [...ObservableInputTuple<T>, SchedulerLike]\n): Observable<T[number]>;\n\n/**\n * Creates an output Observable which sequentially emits all values from the first given\n * Observable and then moves on to the next.\n *\n * <span class=\"informal\">Concatenates multiple Observables together by\n * sequentially emitting their values, one Observable after the other.</span>\n *\n * \n *\n * `concat` joins multiple Observables together, by subscribing to them one at a time and\n * merging their results into the output Observable. You can pass either an array of\n * Observables, or put them directly as arguments. Passing an empty array will result\n * in Observable that completes immediately.\n *\n * `concat` will subscribe to first input Observable and emit all its values, without\n * changing or affecting them in any way. When that Observable completes, it will\n * subscribe to then next Observable passed and, again, emit its values. This will be\n * repeated, until the operator runs out of Observables. When last input Observable completes,\n * `concat` will complete as well. At any given moment only one Observable passed to operator\n * emits values. If you would like to emit values from passed Observables concurrently, check out\n * {@link merge} instead, especially with optional `concurrent` parameter. As a matter of fact,\n * `concat` is an equivalent of `merge` operator with `concurrent` parameter set to `1`.\n *\n * Note that if some input Observable never completes, `concat` will also never complete\n * and Observables following the one that did not complete will never be subscribed. On the other\n * hand, if some Observable simply completes immediately after it is subscribed, it will be\n * invisible for `concat`, which will just move on to the next Observable.\n *\n * If any Observable in chain errors, instead of passing control to the next Observable,\n * `concat` will error immediately as well. Observables that would be subscribed after\n * the one that emitted error, never will.\n *\n * If you pass to `concat` the same Observable many times, its stream of values\n * will be \"replayed\" on every subscription, which means you can repeat given Observable\n * as many times as you like. If passing the same Observable to `concat` 1000 times becomes tedious,\n * you can always use {@link repeat}.\n *\n * ## Examples\n *\n * Concatenate a timer counting from 0 to 3 with a synchronous sequence from 1 to 10\n *\n * ```ts\n * import { interval, take, range, concat } from 'rxjs';\n *\n * const timer = interval(1000).pipe(take(4));\n * const sequence = range(1, 10);\n * const result = concat(timer, sequence);\n * result.subscribe(x => console.log(x));\n *\n * // results in:\n * // 0 -1000ms-> 1 -1000ms-> 2 -1000ms-> 3 -immediate-> 1 ... 10\n * ```\n *\n * Concatenate 3 Observables\n *\n * ```ts\n * import { interval, take, concat } from 'rxjs';\n *\n * const timer1 = interval(1000).pipe(take(10));\n * const timer2 = interval(2000).pipe(take(6));\n * const timer3 = interval(500).pipe(take(10));\n *\n * const result = concat(timer1, timer2, timer3);\n * result.subscribe(x => console.log(x));\n *\n * // results in the following:\n * // (Prints to console sequentially)\n * // -1000ms-> 0 -1000ms-> 1 -1000ms-> ... 9\n * // -2000ms-> 0 -2000ms-> 1 -2000ms-> ... 5\n * // -500ms-> 0 -500ms-> 1 -500ms-> ... 9\n * ```\n *\n * Concatenate the same Observable to repeat it\n *\n * ```ts\n * import { interval, take, concat } from 'rxjs';\n *\n * const timer = interval(1000).pipe(take(2));\n *\n * concat(timer, timer) // concatenating the same Observable!\n * .subscribe({\n * next: value => console.log(value),\n * complete: () => console.log('...and it is done!')\n * });\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 0 after 3s\n * // 1 after 4s\n * // '...and it is done!' also after 4s\n * ```\n *\n * @see {@link concatAll}\n * @see {@link concatMap}\n * @see {@link concatMapTo}\n * @see {@link startWith}\n * @see {@link endWith}\n *\n * @param args Input Observables to concatenate.\n */\nexport function concat(...args: any[]): Observable<unknown> {\n return concatAll()(from(args, popScheduler(args)));\n}\n", "import { Observable } from '../Observable';\nimport { ObservedValueOf, ObservableInput } from '../types';\nimport { innerFrom } from './innerFrom';\n\n/**\n * Creates an Observable that, on subscribe, calls an Observable factory to\n * make an Observable for each new Observer.\n *\n * <span class=\"informal\">Creates the Observable lazily, that is, only when it\n * is subscribed.\n * </span>\n *\n * \n *\n * `defer` allows you to create an Observable only when the Observer\n * subscribes. It waits until an Observer subscribes to it, calls the given\n * factory function to get an Observable -- where a factory function typically\n * generates a new Observable -- and subscribes the Observer to this Observable.\n * In case the factory function returns a falsy value, then EMPTY is used as\n * Observable instead. Last but not least, an exception during the factory\n * function call is transferred to the Observer by calling `error`.\n *\n * ## Example\n *\n * Subscribe to either an Observable of clicks or an Observable of interval, at random\n *\n * ```ts\n * import { defer, fromEvent, interval } from 'rxjs';\n *\n * const clicksOrInterval = defer(() => {\n * return Math.random() > 0.5\n * ? fromEvent(document, 'click')\n * : interval(1000);\n * });\n * clicksOrInterval.subscribe(x => console.log(x));\n *\n * // Results in the following behavior:\n * // If the result of Math.random() is greater than 0.5 it will listen\n * // for clicks anywhere on the \"document\"; when document is clicked it\n * // will log a MouseEvent object to the console. If the result is less\n * // than 0.5 it will emit ascending numbers, one every second(1000ms).\n * ```\n *\n * @see {@link Observable}\n *\n * @param {function(): ObservableInput} observableFactory The Observable\n * factory function to invoke for each Observer that subscribes to the output\n * Observable. May also return a Promise, which will be converted on the fly\n * to an Observable.\n * @return {Observable} An Observable whose Observers' subscriptions trigger\n * an invocation of the given Observable factory function.\n */\nexport function defer<R extends ObservableInput<any>>(observableFactory: () => R): Observable<ObservedValueOf<R>> {\n return new Observable<ObservedValueOf<R>>((subscriber) => {\n innerFrom(observableFactory()).subscribe(subscriber);\n });\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { Observable } from '../Observable';\nimport { mergeMap } from '../operators/mergeMap';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isFunction } from '../util/isFunction';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\n\n// These constants are used to create handler registry functions using array mapping below.\nconst nodeEventEmitterMethods = ['addListener', 'removeListener'] as const;\nconst eventTargetMethods = ['addEventListener', 'removeEventListener'] as const;\nconst jqueryMethods = ['on', 'off'] as const;\n\nexport interface NodeStyleEventEmitter {\n addListener(eventName: string | symbol, handler: NodeEventHandler): this;\n removeListener(eventName: string | symbol, handler: NodeEventHandler): this;\n}\n\nexport type NodeEventHandler = (...args: any[]) => void;\n\n// For APIs that implement `addListener` and `removeListener` methods that may\n// not use the same arguments or return EventEmitter values\n// such as React Native\nexport interface NodeCompatibleEventEmitter {\n addListener(eventName: string, handler: NodeEventHandler): void | {};\n removeListener(eventName: string, handler: NodeEventHandler): void | {};\n}\n\n// Use handler types like those in @types/jquery. See:\n// https://github.com/DefinitelyTyped/DefinitelyTyped/blob/847731ba1d7fa6db6b911c0e43aa0afe596e7723/types/jquery/misc.d.ts#L6395\nexport interface JQueryStyleEventEmitter<TContext, T> {\n on(eventName: string, handler: (this: TContext, t: T, ...args: any[]) => any): void;\n off(eventName: string, handler: (this: TContext, t: T, ...args: any[]) => any): void;\n}\n\nexport interface EventListenerObject<E> {\n handleEvent(evt: E): void;\n}\n\nexport interface HasEventTargetAddRemove<E> {\n addEventListener(\n type: string,\n listener: ((evt: E) => void) | EventListenerObject<E> | null,\n options?: boolean | AddEventListenerOptions\n ): void;\n removeEventListener(\n type: string,\n listener: ((evt: E) => void) | EventListenerObject<E> | null,\n options?: EventListenerOptions | boolean\n ): void;\n}\n\nexport interface EventListenerOptions {\n capture?: boolean;\n passive?: boolean;\n once?: boolean;\n}\n\nexport interface AddEventListenerOptions extends EventListenerOptions {\n once?: boolean;\n passive?: boolean;\n}\n\nexport function fromEvent<T>(target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>, eventName: string): Observable<T>;\nexport function fromEvent<T, R>(\n target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>,\n eventName: string,\n resultSelector: (event: T) => R\n): Observable<R>;\nexport function fromEvent<T>(\n target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>,\n eventName: string,\n options: EventListenerOptions\n): Observable<T>;\nexport function fromEvent<T, R>(\n target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>,\n eventName: string,\n options: EventListenerOptions,\n resultSelector: (event: T) => R\n): Observable<R>;\n\nexport function fromEvent(target: NodeStyleEventEmitter | ArrayLike<NodeStyleEventEmitter>, eventName: string): Observable<unknown>;\n/** @deprecated Do not specify explicit type parameters. Signatures with type parameters that cannot be inferred will be removed in v8. */\nexport function fromEvent<T>(target: NodeStyleEventEmitter | ArrayLike<NodeStyleEventEmitter>, eventName: string): Observable<T>;\nexport function fromEvent<R>(\n target: NodeStyleEventEmitter | ArrayLike<NodeStyleEventEmitter>,\n eventName: string,\n resultSelector: (...args: any[]) => R\n): Observable<R>;\n\nexport function fromEvent(\n target: NodeCompatibleEventEmitter | ArrayLike<NodeCompatibleEventEmitter>,\n eventName: string\n): Observable<unknown>;\n/** @deprecated Do not specify explicit type parameters. Signatures with type parameters that cannot be inferred will be removed in v8. */\nexport function fromEvent<T>(target: NodeCompatibleEventEmitter | ArrayLike<NodeCompatibleEventEmitter>, eventName: string): Observable<T>;\nexport function fromEvent<R>(\n target: NodeCompatibleEventEmitter | ArrayLike<NodeCompatibleEventEmitter>,\n eventName: string,\n resultSelector: (...args: any[]) => R\n): Observable<R>;\n\nexport function fromEvent<T>(\n target: JQueryStyleEventEmitter<any, T> | ArrayLike<JQueryStyleEventEmitter<any, T>>,\n eventName: string\n): Observable<T>;\nexport function fromEvent<T, R>(\n target: JQueryStyleEventEmitter<any, T> | ArrayLike<JQueryStyleEventEmitter<any, T>>,\n eventName: string,\n resultSelector: (value: T, ...args: any[]) => R\n): Observable<R>;\n\n/**\n * Creates an Observable that emits events of a specific type coming from the\n * given event target.\n *\n * <span class=\"informal\">Creates an Observable from DOM events, or Node.js\n * EventEmitter events or others.</span>\n *\n * \n *\n * `fromEvent` accepts as a first argument event target, which is an object with methods\n * for registering event handler functions. As a second argument it takes string that indicates\n * type of event we want to listen for. `fromEvent` supports selected types of event targets,\n * which are described in detail below. If your event target does not match any of the ones listed,\n * you should use {@link fromEventPattern}, which can be used on arbitrary APIs.\n * When it comes to APIs supported by `fromEvent`, their methods for adding and removing event\n * handler functions have different names, but they all accept a string describing event type\n * and function itself, which will be called whenever said event happens.\n *\n * Every time resulting Observable is subscribed, event handler function will be registered\n * to event target on given event type. When that event fires, value\n * passed as a first argument to registered function will be emitted by output Observable.\n * When Observable is unsubscribed, function will be unregistered from event target.\n *\n * Note that if event target calls registered function with more than one argument, second\n * and following arguments will not appear in resulting stream. In order to get access to them,\n * you can pass to `fromEvent` optional project function, which will be called with all arguments\n * passed to event handler. Output Observable will then emit value returned by project function,\n * instead of the usual value.\n *\n * Remember that event targets listed below are checked via duck typing. It means that\n * no matter what kind of object you have and no matter what environment you work in,\n * you can safely use `fromEvent` on that object if it exposes described methods (provided\n * of course they behave as was described above). So for example if Node.js library exposes\n * event target which has the same method names as DOM EventTarget, `fromEvent` is still\n * a good choice.\n *\n * If the API you use is more callback then event handler oriented (subscribed\n * callback function fires only once and thus there is no need to manually\n * unregister it), you should use {@link bindCallback} or {@link bindNodeCallback}\n * instead.\n *\n * `fromEvent` supports following types of event targets:\n *\n * **DOM EventTarget**\n *\n * This is an object with `addEventListener` and `removeEventListener` methods.\n *\n * In the browser, `addEventListener` accepts - apart from event type string and event\n * handler function arguments - optional third parameter, which is either an object or boolean,\n * both used for additional configuration how and when passed function will be called. When\n * `fromEvent` is used with event target of that type, you can provide this values\n * as third parameter as well.\n *\n * **Node.js EventEmitter**\n *\n * An object with `addListener` and `removeListener` methods.\n *\n * **JQuery-style event target**\n *\n * An object with `on` and `off` methods\n *\n * **DOM NodeList**\n *\n * List of DOM Nodes, returned for example by `document.querySelectorAll` or `Node.childNodes`.\n *\n * Although this collection is not event target in itself, `fromEvent` will iterate over all Nodes\n * it contains and install event handler function in every of them. When returned Observable\n * is unsubscribed, function will be removed from all Nodes.\n *\n * **DOM HtmlCollection**\n *\n * Just as in case of NodeList it is a collection of DOM nodes. Here as well event handler function is\n * installed and removed in each of elements.\n *\n *\n * ## Examples\n *\n * Emit clicks happening on the DOM document\n *\n * ```ts\n * import { fromEvent } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * clicks.subscribe(x => console.log(x));\n *\n * // Results in:\n * // MouseEvent object logged to console every time a click\n * // occurs on the document.\n * ```\n *\n * Use `addEventListener` with capture option\n *\n * ```ts\n * import { fromEvent } from 'rxjs';\n *\n * const div = document.createElement('div');\n * div.style.cssText = 'width: 200px; height: 200px; background: #09c;';\n * document.body.appendChild(div);\n *\n * // note optional configuration parameter which will be passed to addEventListener\n * const clicksInDocument = fromEvent(document, 'click', { capture: true });\n * const clicksInDiv = fromEvent(div, 'click');\n *\n * clicksInDocument.subscribe(() => console.log('document'));\n * clicksInDiv.subscribe(() => console.log('div'));\n *\n * // By default events bubble UP in DOM tree, so normally\n * // when we would click on div in document\n * // \"div\" would be logged first and then \"document\".\n * // Since we specified optional `capture` option, document\n * // will catch event when it goes DOWN DOM tree, so console\n * // will log \"document\" and then \"div\".\n * ```\n *\n * @see {@link bindCallback}\n * @see {@link bindNodeCallback}\n * @see {@link fromEventPattern}\n *\n * @param {FromEventTarget<T>} target The DOM EventTarget, Node.js\n * EventEmitter, JQuery-like event target, NodeList or HTMLCollection to attach the event handler to.\n * @param {string} eventName The event name of interest, being emitted by the\n * `target`.\n * @param {EventListenerOptions} [options] Options to pass through to addEventListener\n * @return {Observable<T>}\n */\nexport function fromEvent<T>(\n target: any,\n eventName: string,\n options?: EventListenerOptions | ((...args: any[]) => T),\n resultSelector?: (...args: any[]) => T\n): Observable<T> {\n if (isFunction(options)) {\n resultSelector = options;\n options = undefined;\n }\n if (resultSelector) {\n return fromEvent<T>(target, eventName, options as EventListenerOptions).pipe(mapOneOrManyArgs(resultSelector));\n }\n\n // Figure out our add and remove methods. In order to do this,\n // we are going to analyze the target in a preferred order, if\n // the target matches a given signature, we take the two \"add\" and \"remove\"\n // method names and apply them to a map to create opposite versions of the\n // same function. This is because they all operate in duplicate pairs,\n // `addListener(name, handler)`, `removeListener(name, handler)`, for example.\n // The call only differs by method name, as to whether or not you're adding or removing.\n const [add, remove] =\n // If it is an EventTarget, we need to use a slightly different method than the other two patterns.\n isEventTarget(target)\n ? eventTargetMethods.map((methodName) => (handler: any) => target[methodName](eventName, handler, options as EventListenerOptions))\n : // In all other cases, the call pattern is identical with the exception of the method names.\n isNodeStyleEventEmitter(target)\n ? nodeEventEmitterMethods.map(toCommonHandlerRegistry(target, eventName))\n : isJQueryStyleEventEmitter(target)\n ? jqueryMethods.map(toCommonHandlerRegistry(target, eventName))\n : [];\n\n // If add is falsy, it's because we didn't match a pattern above.\n // Check to see if it is an ArrayLike, because if it is, we want to\n // try to apply fromEvent to all of it's items. We do this check last,\n // because there are may be some types that are both ArrayLike *and* implement\n // event registry points, and we'd rather delegate to that when possible.\n if (!add) {\n if (isArrayLike(target)) {\n return mergeMap((subTarget: any) => fromEvent(subTarget, eventName, options as EventListenerOptions))(\n innerFrom(target)\n ) as Observable<T>;\n }\n }\n\n // If add is falsy and we made it here, it's because we didn't\n // match any valid target objects above.\n if (!add) {\n throw new TypeError('Invalid event target');\n }\n\n return new Observable<T>((subscriber) => {\n // The handler we are going to register. Forwards the event object, by itself, or\n // an array of arguments to the event handler, if there is more than one argument,\n // to the consumer.\n const handler = (...args: any[]) => subscriber.next(1 < args.length ? args : args[0]);\n // Do the work of adding the handler to the target.\n add(handler);\n // When we finalize, we want to remove the handler and free up memory.\n return () => remove!(handler);\n });\n}\n\n/**\n * Used to create `add` and `remove` functions to register and unregister event handlers\n * from a target in the most common handler pattern, where there are only two arguments.\n * (e.g. `on(name, fn)`, `off(name, fn)`, `addListener(name, fn)`, or `removeListener(name, fn)`)\n * @param target The target we're calling methods on\n * @param eventName The event name for the event we're creating register or unregister functions for\n */\nfunction toCommonHandlerRegistry(target: any, eventName: string) {\n return (methodName: string) => (handler: any) => target[methodName](eventName, handler);\n}\n\n/**\n * Checks to see if the target implements the required node-style EventEmitter methods\n * for adding and removing event handlers.\n * @param target the object to check\n */\nfunction isNodeStyleEventEmitter(target: any): target is NodeStyleEventEmitter {\n return isFunction(target.addListener) && isFunction(target.removeListener);\n}\n\n/**\n * Checks to see if the target implements the required jQuery-style EventEmitter methods\n * for adding and removing event handlers.\n * @param target the object to check\n */\nfunction isJQueryStyleEventEmitter(target: any): target is JQueryStyleEventEmitter<any, any> {\n return isFunction(target.on) && isFunction(target.off);\n}\n\n/**\n * Checks to see if the target implements the required EventTarget methods\n * for adding and removing event handlers.\n * @param target the object to check\n */\nfunction isEventTarget(target: any): target is HasEventTargetAddRemove<any> {\n return isFunction(target.addEventListener) && isFunction(target.removeEventListener);\n}\n", "import { Observable } from '../Observable';\nimport { isFunction } from '../util/isFunction';\nimport { NodeEventHandler } from './fromEvent';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\n\n/* tslint:disable:max-line-length */\nexport function fromEventPattern<T>(\n addHandler: (handler: NodeEventHandler) => any,\n removeHandler?: (handler: NodeEventHandler, signal?: any) => void\n): Observable<T>;\nexport function fromEventPattern<T>(\n addHandler: (handler: NodeEventHandler) => any,\n removeHandler?: (handler: NodeEventHandler, signal?: any) => void,\n resultSelector?: (...args: any[]) => T\n): Observable<T>;\n/* tslint:enable:max-line-length */\n\n/**\n * Creates an Observable from an arbitrary API for registering event handlers.\n *\n * <span class=\"informal\">When that method for adding event handler was something {@link fromEvent}\n * was not prepared for.</span>\n *\n * \n *\n * `fromEventPattern` allows you to convert into an Observable any API that supports registering handler functions\n * for events. It is similar to {@link fromEvent}, but far\n * more flexible. In fact, all use cases of {@link fromEvent} could be easily handled by\n * `fromEventPattern` (although in slightly more verbose way).\n *\n * This operator accepts as a first argument an `addHandler` function, which will be injected with\n * handler parameter. That handler is actually an event handler function that you now can pass\n * to API expecting it. `addHandler` will be called whenever Observable\n * returned by the operator is subscribed, so registering handler in API will not\n * necessarily happen when `fromEventPattern` is called.\n *\n * After registration, every time an event that we listen to happens,\n * Observable returned by `fromEventPattern` will emit value that event handler\n * function was called with. Note that if event handler was called with more\n * than one argument, second and following arguments will not appear in the Observable.\n *\n * If API you are using allows to unregister event handlers as well, you can pass to `fromEventPattern`\n * another function - `removeHandler` - as a second parameter. It will be injected\n * with the same handler function as before, which now you can use to unregister\n * it from the API. `removeHandler` will be called when consumer of resulting Observable\n * unsubscribes from it.\n *\n * In some APIs unregistering is actually handled differently. Method registering an event handler\n * returns some kind of token, which is later used to identify which function should\n * be unregistered or it itself has method that unregisters event handler.\n * If that is the case with your API, make sure token returned\n * by registering method is returned by `addHandler`. Then it will be passed\n * as a second argument to `removeHandler`, where you will be able to use it.\n *\n * If you need access to all event handler parameters (not only the first one),\n * or you need to transform them in any way, you can call `fromEventPattern` with optional\n * third parameter - project function which will accept all arguments passed to\n * event handler when it is called. Whatever is returned from project function will appear on\n * resulting stream instead of usual event handlers first argument. This means\n * that default project can be thought of as function that takes its first parameter\n * and ignores the rest.\n *\n * ## Examples\n *\n * Emits clicks happening on the DOM document\n *\n * ```ts\n * import { fromEventPattern } from 'rxjs';\n *\n * function addClickHandler(handler) {\n * document.addEventListener('click', handler);\n * }\n *\n * function removeClickHandler(handler) {\n * document.removeEventListener('click', handler);\n * }\n *\n * const clicks = fromEventPattern(\n * addClickHandler,\n * removeClickHandler\n * );\n * clicks.subscribe(x => console.log(x));\n *\n * // Whenever you click anywhere in the browser, DOM MouseEvent\n * // object will be logged.\n * ```\n *\n * Use with API that returns cancellation token\n *\n * ```ts\n * import { fromEventPattern } from 'rxjs';\n *\n * const token = someAPI.registerEventHandler(function() {});\n * someAPI.unregisterEventHandler(token); // this APIs cancellation method accepts\n * // not handler itself, but special token.\n *\n * const someAPIObservable = fromEventPattern(\n * function(handler) { return someAPI.registerEventHandler(handler); }, // Note that we return the token here...\n * function(handler, token) { someAPI.unregisterEventHandler(token); } // ...to then use it here.\n * );\n * ```\n *\n * Use with project function\n *\n * ```ts\n * import { fromEventPattern } from 'rxjs';\n *\n * someAPI.registerEventHandler((eventType, eventMessage) => {\n * console.log(eventType, eventMessage); // Logs 'EVENT_TYPE' 'EVENT_MESSAGE' to console.\n * });\n *\n * const someAPIObservable = fromEventPattern(\n * handler => someAPI.registerEventHandler(handler),\n * handler => someAPI.unregisterEventHandler(handler)\n * (eventType, eventMessage) => eventType + ' --- ' + eventMessage // without that function only 'EVENT_TYPE'\n * ); // would be emitted by the Observable\n *\n * someAPIObservable.subscribe(value => console.log(value));\n *\n * // Logs:\n * // 'EVENT_TYPE --- EVENT_MESSAGE'\n * ```\n *\n * @see {@link fromEvent}\n * @see {@link bindCallback}\n * @see {@link bindNodeCallback}\n *\n * @param {function(handler: Function): any} addHandler A function that takes\n * a `handler` function as argument and attaches it somehow to the actual\n * source of events.\n * @param {function(handler: Function, token?: any): void} [removeHandler] A function that\n * takes a `handler` function as an argument and removes it from the event source. If `addHandler`\n * returns some kind of token, `removeHandler` function will have it as a second parameter.\n * @param {function(...args: any): T} [project] A function to\n * transform results. It takes the arguments from the event handler and\n * should return a single value.\n * @return {Observable<T>} Observable which, when an event happens, emits first parameter\n * passed to registered event handler. Alternatively it emits whatever project function returns\n * at that moment.\n */\nexport function fromEventPattern<T>(\n addHandler: (handler: NodeEventHandler) => any,\n removeHandler?: (handler: NodeEventHandler, signal?: any) => void,\n resultSelector?: (...args: any[]) => T\n): Observable<T | T[]> {\n if (resultSelector) {\n return fromEventPattern<T>(addHandler, removeHandler).pipe(mapOneOrManyArgs(resultSelector));\n }\n\n return new Observable<T | T[]>((subscriber) => {\n const handler = (...e: T[]) => subscriber.next(e.length === 1 ? e[0] : e);\n const retValue = addHandler(handler);\n return isFunction(removeHandler) ? () => removeHandler(handler, retValue) : undefined;\n });\n}\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\nimport { async as asyncScheduler } from '../scheduler/async';\nimport { isScheduler } from '../util/isScheduler';\nimport { isValidDate } from '../util/isDate';\n\n/**\n * Creates an observable that will wait for a specified time period, or exact date, before\n * emitting the number 0.\n *\n * <span class=\"informal\">Used to emit a notification after a delay.</span>\n *\n * This observable is useful for creating delays in code, or racing against other values\n * for ad-hoc timeouts.\n *\n * The `delay` is specified by default in milliseconds, however providing a custom scheduler could\n * create a different behavior.\n *\n * ## Examples\n *\n * Wait 3 seconds and start another observable\n *\n * You might want to use `timer` to delay subscription to an\n * observable by a set amount of time. Here we use a timer with\n * {@link concatMapTo} or {@link concatMap} in order to wait\n * a few seconds and start a subscription to a source.\n *\n * ```ts\n * import { of, timer, concatMap } from 'rxjs';\n *\n * // This could be any observable\n * const source = of(1, 2, 3);\n *\n * timer(3000)\n * .pipe(concatMap(() => source))\n * .subscribe(console.log);\n * ```\n *\n * Take all values until the start of the next minute\n *\n * Using a `Date` as the trigger for the first emission, you can\n * do things like wait until midnight to fire an event, or in this case,\n * wait until a new minute starts (chosen so the example wouldn't take\n * too long to run) in order to stop watching a stream. Leveraging\n * {@link takeUntil}.\n *\n * ```ts\n * import { interval, takeUntil, timer } from 'rxjs';\n *\n * // Build a Date object that marks the\n * // next minute.\n * const currentDate = new Date();\n * const startOfNextMinute = new Date(\n * currentDate.getFullYear(),\n * currentDate.getMonth(),\n * currentDate.getDate(),\n * currentDate.getHours(),\n * currentDate.getMinutes() + 1\n * );\n *\n * // This could be any observable stream\n * const source = interval(1000);\n *\n * const result = source.pipe(\n * takeUntil(timer(startOfNextMinute))\n * );\n *\n * result.subscribe(console.log);\n * ```\n *\n * ### Known Limitations\n *\n * - The {@link asyncScheduler} uses `setTimeout` which has limitations for how far in the future it can be scheduled.\n *\n * - If a `scheduler` is provided that returns a timestamp other than an epoch from `now()`, and\n * a `Date` object is passed to the `dueTime` argument, the calculation for when the first emission\n * should occur will be incorrect. In this case, it would be best to do your own calculations\n * ahead of time, and pass a `number` in as the `dueTime`.\n *\n * @param due If a `number`, the amount of time in milliseconds to wait before emitting.\n * If a `Date`, the exact time at which to emit.\n * @param scheduler The scheduler to use to schedule the delay. Defaults to {@link asyncScheduler}.\n */\nexport function timer(due: number | Date, scheduler?: SchedulerLike): Observable<0>;\n\n/**\n * Creates an observable that starts an interval after a specified delay, emitting incrementing numbers -- starting at `0` --\n * on each interval after words.\n *\n * The `delay` and `intervalDuration` are specified by default in milliseconds, however providing a custom scheduler could\n * create a different behavior.\n *\n * ## Example\n *\n * ### Start an interval that starts right away\n *\n * Since {@link interval} waits for the passed delay before starting,\n * sometimes that's not ideal. You may want to start an interval immediately.\n * `timer` works well for this. Here we have both side-by-side so you can\n * see them in comparison.\n *\n * Note that this observable will never complete.\n *\n * ```ts\n * import { timer, interval } from 'rxjs';\n *\n * timer(0, 1000).subscribe(n => console.log('timer', n));\n * interval(1000).subscribe(n => console.log('interval', n));\n * ```\n *\n * ### Known Limitations\n *\n * - The {@link asyncScheduler} uses `setTimeout` which has limitations for how far in the future it can be scheduled.\n *\n * - If a `scheduler` is provided that returns a timestamp other than an epoch from `now()`, and\n * a `Date` object is passed to the `dueTime` argument, the calculation for when the first emission\n * should occur will be incorrect. In this case, it would be best to do your own calculations\n * ahead of time, and pass a `number` in as the `startDue`.\n * @param startDue If a `number`, is the time to wait before starting the interval.\n * If a `Date`, is the exact time at which to start the interval.\n * @param intervalDuration The delay between each value emitted in the interval. Passing a\n * negative number here will result in immediate completion after the first value is emitted, as though\n * no `intervalDuration` was passed at all.\n * @param scheduler The scheduler to use to schedule the delay. Defaults to {@link asyncScheduler}.\n */\nexport function timer(startDue: number | Date, intervalDuration: number, scheduler?: SchedulerLike): Observable<number>;\n\n/**\n * @deprecated The signature allowing `undefined` to be passed for `intervalDuration` will be removed in v8. Use the `timer(dueTime, scheduler?)` signature instead.\n */\nexport function timer(dueTime: number | Date, unused: undefined, scheduler?: SchedulerLike): Observable<0>;\n\nexport function timer(\n dueTime: number | Date = 0,\n intervalOrScheduler?: number | SchedulerLike,\n scheduler: SchedulerLike = asyncScheduler\n): Observable<number> {\n // Since negative intervalDuration is treated as though no\n // interval was specified at all, we start with a negative number.\n let intervalDuration = -1;\n\n if (intervalOrScheduler != null) {\n // If we have a second argument, and it's a scheduler,\n // override the scheduler we had defaulted. Otherwise,\n // it must be an interval.\n if (isScheduler(intervalOrScheduler)) {\n scheduler = intervalOrScheduler;\n } else {\n // Note that this *could* be negative, in which case\n // it's like not passing an intervalDuration at all.\n intervalDuration = intervalOrScheduler;\n }\n }\n\n return new Observable((subscriber) => {\n // If a valid date is passed, calculate how long to wait before\n // executing the first value... otherwise, if it's a number just schedule\n // that many milliseconds (or scheduler-specified unit size) in the future.\n let due = isValidDate(dueTime) ? +dueTime - scheduler!.now() : dueTime;\n\n if (due < 0) {\n // Ensure we don't schedule in the future.\n due = 0;\n }\n\n // The incrementing value we emit.\n let n = 0;\n\n // Start the timer.\n return scheduler.schedule(function () {\n if (!subscriber.closed) {\n // Emit the next value and increment.\n subscriber.next(n++);\n\n if (0 <= intervalDuration) {\n // If we have a interval after the initial timer,\n // reschedule with the period.\n this.schedule(undefined, intervalDuration);\n } else {\n // We didn't have an interval. So just complete.\n subscriber.complete();\n }\n }\n }, due);\n });\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInput, ObservableInputTuple, SchedulerLike } from '../types';\nimport { mergeAll } from '../operators/mergeAll';\nimport { innerFrom } from './innerFrom';\nimport { EMPTY } from './empty';\nimport { popNumber, popScheduler } from '../util/args';\nimport { from } from './from';\n\nexport function merge<A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): Observable<A[number]>;\nexport function merge<A extends readonly unknown[]>(...sourcesAndConcurrency: [...ObservableInputTuple<A>, number?]): Observable<A[number]>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `mergeAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function merge<A extends readonly unknown[]>(\n ...sourcesAndScheduler: [...ObservableInputTuple<A>, SchedulerLike?]\n): Observable<A[number]>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `mergeAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function merge<A extends readonly unknown[]>(\n ...sourcesAndConcurrencyAndScheduler: [...ObservableInputTuple<A>, number?, SchedulerLike?]\n): Observable<A[number]>;\n\n/**\n * Creates an output Observable which concurrently emits all values from every\n * given input Observable.\n *\n * <span class=\"informal\">Flattens multiple Observables together by blending\n * their values into one Observable.</span>\n *\n * \n *\n * `merge` subscribes to each given input Observable (as arguments), and simply\n * forwards (without doing any transformation) all the values from all the input\n * Observables to the output Observable. The output Observable only completes\n * once all input Observables have completed. Any error delivered by an input\n * Observable will be immediately emitted on the output Observable.\n *\n * ## Examples\n *\n * Merge together two Observables: 1s interval and clicks\n *\n * ```ts\n * import { merge, fromEvent, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const timer = interval(1000);\n * const clicksOrTimer = merge(clicks, timer);\n * clicksOrTimer.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // timer will emit ascending values, one every second(1000ms) to console\n * // clicks logs MouseEvents to console every time the \"document\" is clicked\n * // Since the two streams are merged you see these happening\n * // as they occur.\n * ```\n *\n * Merge together 3 Observables, but run only 2 concurrently\n *\n * ```ts\n * import { interval, take, merge } from 'rxjs';\n *\n * const timer1 = interval(1000).pipe(take(10));\n * const timer2 = interval(2000).pipe(take(6));\n * const timer3 = interval(500).pipe(take(10));\n *\n * const concurrent = 2; // the argument\n * const merged = merge(timer1, timer2, timer3, concurrent);\n * merged.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // - First timer1 and timer2 will run concurrently\n * // - timer1 will emit a value every 1000ms for 10 iterations\n * // - timer2 will emit a value every 2000ms for 6 iterations\n * // - after timer1 hits its max iteration, timer2 will\n * // continue, and timer3 will start to run concurrently with timer2\n * // - when timer2 hits its max iteration it terminates, and\n * // timer3 will continue to emit a value every 500ms until it is complete\n * ```\n *\n * @see {@link mergeAll}\n * @see {@link mergeMap}\n * @see {@link mergeMapTo}\n * @see {@link mergeScan}\n *\n * @param {...ObservableInput} observables Input Observables to merge together.\n * @param {number} [concurrent=Infinity] Maximum number of input\n * Observables being subscribed to concurrently.\n * @param {SchedulerLike} [scheduler=null] The {@link SchedulerLike} to use for managing\n * concurrency of input Observables.\n * @return {Observable} an Observable that emits items that are the result of\n * every input Observable.\n */\nexport function merge(...args: (ObservableInput<unknown> | number | SchedulerLike)[]): Observable<unknown> {\n const scheduler = popScheduler(args);\n const concurrent = popNumber(args, Infinity);\n const sources = args as ObservableInput<unknown>[];\n return !sources.length\n ? // No source provided\n EMPTY\n : sources.length === 1\n ? // One source? Just return it.\n innerFrom(sources[0])\n : // Merge all sources\n mergeAll(concurrent)(from(sources, scheduler));\n}\n", "import { Observable } from '../Observable';\nimport { noop } from '../util/noop';\n\n/**\n * An Observable that emits no items to the Observer and never completes.\n *\n * \n *\n * A simple Observable that emits neither values nor errors nor the completion\n * notification. It can be used for testing purposes or for composing with other\n * Observables. Please note that by never emitting a complete notification, this\n * Observable keeps the subscription from being disposed automatically.\n * Subscriptions need to be manually disposed.\n *\n * ## Example\n *\n * Emit the number 7, then never emit anything else (not even complete)\n *\n * ```ts\n * import { NEVER, startWith } from 'rxjs';\n *\n * const info = () => console.log('Will not be called');\n *\n * const result = NEVER.pipe(startWith(7));\n * result.subscribe({\n * next: x => console.log(x),\n * error: info,\n * complete: info\n * });\n * ```\n *\n * @see {@link Observable}\n * @see {@link EMPTY}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const NEVER = new Observable<never>(noop);\n\n/**\n * @deprecated Replaced with the {@link NEVER} constant. Will be removed in v8.\n */\nexport function never() {\n return NEVER;\n}\n", "const { isArray } = Array;\n\n/**\n * Used in operators and functions that accept either a list of arguments, or an array of arguments\n * as a single argument.\n */\nexport function argsOrArgArray<T>(args: (T | T[])[]): T[] {\n return args.length === 1 && isArray(args[0]) ? args[0] : (args as T[]);\n}\n", "import { OperatorFunction, MonoTypeOperatorFunction, TruthyTypesOf } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/** @deprecated Use a closure instead of a `thisArg`. Signatures accepting a `thisArg` will be removed in v8. */\nexport function filter<T, S extends T, A>(predicate: (this: A, value: T, index: number) => value is S, thisArg: A): OperatorFunction<T, S>;\nexport function filter<T, S extends T>(predicate: (value: T, index: number) => value is S): OperatorFunction<T, S>;\nexport function filter<T>(predicate: BooleanConstructor): OperatorFunction<T, TruthyTypesOf<T>>;\n/** @deprecated Use a closure instead of a `thisArg`. Signatures accepting a `thisArg` will be removed in v8. */\nexport function filter<T, A>(predicate: (this: A, value: T, index: number) => boolean, thisArg: A): MonoTypeOperatorFunction<T>;\nexport function filter<T>(predicate: (value: T, index: number) => boolean): MonoTypeOperatorFunction<T>;\n\n/**\n * Filter items emitted by the source Observable by only emitting those that\n * satisfy a specified predicate.\n *\n * <span class=\"informal\">Like\n * [Array.prototype.filter()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter),\n * it only emits a value from the source if it passes a criterion function.</span>\n *\n * \n *\n * Similar to the well-known `Array.prototype.filter` method, this operator\n * takes values from the source Observable, passes them through a `predicate`\n * function and only emits those values that yielded `true`.\n *\n * ## Example\n *\n * Emit only click events whose target was a DIV element\n *\n * ```ts\n * import { fromEvent, filter } from 'rxjs';\n *\n * const div = document.createElement('div');\n * div.style.cssText = 'width: 200px; height: 200px; background: #09c;';\n * document.body.appendChild(div);\n *\n * const clicks = fromEvent(document, 'click');\n * const clicksOnDivs = clicks.pipe(filter(ev => (<HTMLElement>ev.target).tagName === 'DIV'));\n * clicksOnDivs.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link distinct}\n * @see {@link distinctUntilChanged}\n * @see {@link distinctUntilKeyChanged}\n * @see {@link ignoreElements}\n * @see {@link partition}\n * @see {@link skip}\n *\n * @param predicate A function that\n * evaluates each value emitted by the source Observable. If it returns `true`,\n * the value is emitted, if `false` the value is not passed to the output\n * Observable. The `index` parameter is the number `i` for the i-th source\n * emission that has happened since the subscription, starting from the number\n * `0`.\n * @param thisArg An optional argument to determine the value of `this`\n * in the `predicate` function.\n * @return A function that returns an Observable that emits items from the\n * source Observable that satisfy the specified `predicate`.\n */\nexport function filter<T>(predicate: (value: T, index: number) => boolean, thisArg?: any): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n // An index passed to our predicate function on each call.\n let index = 0;\n\n // Subscribe to the source, all errors and completions are\n // forwarded to the consumer.\n source.subscribe(\n // Call the predicate with the appropriate `this` context,\n // if the predicate returns `true`, then send the value\n // to the consumer.\n createOperatorSubscriber(subscriber, (value) => predicate.call(thisArg, value, index++) && subscriber.next(value))\n );\n });\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInputTuple } from '../types';\nimport { innerFrom } from './innerFrom';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { EMPTY } from './empty';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { popResultSelector } from '../util/args';\n\nexport function zip<A extends readonly unknown[]>(sources: [...ObservableInputTuple<A>]): Observable<A>;\nexport function zip<A extends readonly unknown[], R>(\n sources: [...ObservableInputTuple<A>],\n resultSelector: (...values: A) => R\n): Observable<R>;\nexport function zip<A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): Observable<A>;\nexport function zip<A extends readonly unknown[], R>(\n ...sourcesAndResultSelector: [...ObservableInputTuple<A>, (...values: A) => R]\n): Observable<R>;\n\n/**\n * Combines multiple Observables to create an Observable whose values are calculated from the values, in order, of each\n * of its input Observables.\n *\n * If the last parameter is a function, this function is used to compute the created value from the input values.\n * Otherwise, an array of the input values is returned.\n *\n * ## Example\n *\n * Combine age and name from different sources\n *\n * ```ts\n * import { of, zip, map } from 'rxjs';\n *\n * const age$ = of(27, 25, 29);\n * const name$ = of('Foo', 'Bar', 'Beer');\n * const isDev$ = of(true, true, false);\n *\n * zip(age$, name$, isDev$).pipe(\n * map(([age, name, isDev]) => ({ age, name, isDev }))\n * )\n * .subscribe(x => console.log(x));\n *\n * // Outputs\n * // { age: 27, name: 'Foo', isDev: true }\n * // { age: 25, name: 'Bar', isDev: true }\n * // { age: 29, name: 'Beer', isDev: false }\n * ```\n *\n * @param sources\n * @return {Observable<R>}\n */\nexport function zip(...args: unknown[]): Observable<unknown> {\n const resultSelector = popResultSelector(args);\n\n const sources = argsOrArgArray(args) as Observable<unknown>[];\n\n return sources.length\n ? new Observable<unknown[]>((subscriber) => {\n // A collection of buffers of values from each source.\n // Keyed by the same index with which the sources were passed in.\n let buffers: unknown[][] = sources.map(() => []);\n\n // An array of flags of whether or not the sources have completed.\n // This is used to check to see if we should complete the result.\n // Keyed by the same index with which the sources were passed in.\n let completed = sources.map(() => false);\n\n // When everything is done, release the arrays above.\n subscriber.add(() => {\n buffers = completed = null!;\n });\n\n // Loop over our sources and subscribe to each one. The index `i` is\n // especially important here, because we use it in closures below to\n // access the related buffers and completion properties\n for (let sourceIndex = 0; !subscriber.closed && sourceIndex < sources.length; sourceIndex++) {\n innerFrom(sources[sourceIndex]).subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n buffers[sourceIndex].push(value);\n // if every buffer has at least one value in it, then we\n // can shift out the oldest value from each buffer and emit\n // them as an array.\n if (buffers.every((buffer) => buffer.length)) {\n const result: any = buffers.map((buffer) => buffer.shift()!);\n // Emit the array. If theres' a result selector, use that.\n subscriber.next(resultSelector ? resultSelector(...result) : result);\n // If any one of the sources is both complete and has an empty buffer\n // then we complete the result. This is because we cannot possibly have\n // any more values to zip together.\n if (buffers.some((buffer, i) => !buffer.length && completed[i])) {\n subscriber.complete();\n }\n }\n },\n () => {\n // This source completed. Mark it as complete so we can check it later\n // if we have to.\n completed[sourceIndex] = true;\n // But, if this complete source has nothing in its buffer, then we\n // can complete the result, because we can't possibly have any more\n // values from this to zip together with the other values.\n !buffers[sourceIndex].length && subscriber.complete();\n }\n )\n );\n }\n\n // When everything is done, release the arrays above.\n return () => {\n buffers = completed = null!;\n };\n })\n : EMPTY;\n}\n", "import { Subscriber } from '../Subscriber';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\n\nimport { operate } from '../util/lift';\nimport { innerFrom } from '../observable/innerFrom';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Ignores source values for a duration determined by another Observable, then\n * emits the most recent value from the source Observable, then repeats this\n * process.\n *\n * <span class=\"informal\">It's like {@link auditTime}, but the silencing\n * duration is determined by a second Observable.</span>\n *\n * \n *\n * `audit` is similar to `throttle`, but emits the last value from the silenced\n * time window, instead of the first value. `audit` emits the most recent value\n * from the source Observable on the output Observable as soon as its internal\n * timer becomes disabled, and ignores source values while the timer is enabled.\n * Initially, the timer is disabled. As soon as the first source value arrives,\n * the timer is enabled by calling the `durationSelector` function with the\n * source value, which returns the \"duration\" Observable. When the duration\n * Observable emits a value, the timer is disabled, then the most\n * recent source value is emitted on the output Observable, and this process\n * repeats for the next source value.\n *\n * ## Example\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, audit, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(audit(ev => interval(1000)));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link auditTime}\n * @see {@link debounce}\n * @see {@link delayWhen}\n * @see {@link sample}\n * @see {@link throttle}\n *\n * @param durationSelector A function\n * that receives a value from the source Observable, for computing the silencing\n * duration, returned as an Observable or a Promise.\n * @return A function that returns an Observable that performs rate-limiting of\n * emissions from the source Observable.\n */\nexport function audit<T>(durationSelector: (value: T) => ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let hasValue = false;\n let lastValue: T | null = null;\n let durationSubscriber: Subscriber<any> | null = null;\n let isComplete = false;\n\n const endDuration = () => {\n durationSubscriber?.unsubscribe();\n durationSubscriber = null;\n if (hasValue) {\n hasValue = false;\n const value = lastValue!;\n lastValue = null;\n subscriber.next(value);\n }\n isComplete && subscriber.complete();\n };\n\n const cleanupDuration = () => {\n durationSubscriber = null;\n isComplete && subscriber.complete();\n };\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n hasValue = true;\n lastValue = value;\n if (!durationSubscriber) {\n innerFrom(durationSelector(value)).subscribe(\n (durationSubscriber = createOperatorSubscriber(subscriber, endDuration, cleanupDuration))\n );\n }\n },\n () => {\n isComplete = true;\n (!hasValue || !durationSubscriber || durationSubscriber.closed) && subscriber.complete();\n }\n )\n );\n });\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { audit } from './audit';\nimport { timer } from '../observable/timer';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\n\n/**\n * Ignores source values for `duration` milliseconds, then emits the most recent\n * value from the source Observable, then repeats this process.\n *\n * <span class=\"informal\">When it sees a source value, it ignores that plus\n * the next ones for `duration` milliseconds, and then it emits the most recent\n * value from the source.</span>\n *\n * \n *\n * `auditTime` is similar to `throttleTime`, but emits the last value from the\n * silenced time window, instead of the first value. `auditTime` emits the most\n * recent value from the source Observable on the output Observable as soon as\n * its internal timer becomes disabled, and ignores source values while the\n * timer is enabled. Initially, the timer is disabled. As soon as the first\n * source value arrives, the timer is enabled. After `duration` milliseconds (or\n * the time unit determined internally by the optional `scheduler`) has passed,\n * the timer is disabled, then the most recent source value is emitted on the\n * output Observable, and this process repeats for the next source value.\n * Optionally takes a {@link SchedulerLike} for managing timers.\n *\n * ## Example\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, auditTime } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(auditTime(1000));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link debounceTime}\n * @see {@link delay}\n * @see {@link sampleTime}\n * @see {@link throttleTime}\n *\n * @param {number} duration Time to wait before emitting the most recent source\n * value, measured in milliseconds or the time unit determined internally\n * by the optional `scheduler`.\n * @param {SchedulerLike} [scheduler=async] The {@link SchedulerLike} to use for\n * managing the timers that handle the rate-limiting behavior.\n * @return A function that returns an Observable that performs rate-limiting of\n * emissions from the source Observable.\n */\nexport function auditTime<T>(duration: number, scheduler: SchedulerLike = asyncScheduler): MonoTypeOperatorFunction<T> {\n return audit(() => timer(duration, scheduler));\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { arrRemove } from '../util/arrRemove';\n\n/**\n * Buffers the source Observable values until the size hits the maximum\n * `bufferSize` given.\n *\n * <span class=\"informal\">Collects values from the past as an array, and emits\n * that array only when its size reaches `bufferSize`.</span>\n *\n * \n *\n * Buffers a number of values from the source Observable by `bufferSize` then\n * emits the buffer and clears it, and starts a new buffer each\n * `startBufferEvery` values. If `startBufferEvery` is not provided or is\n * `null`, then new buffers are started immediately at the start of the source\n * and when each buffer closes and is emitted.\n *\n * ## Examples\n *\n * Emit the last two click events as an array\n *\n * ```ts\n * import { fromEvent, bufferCount } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const buffered = clicks.pipe(bufferCount(2));\n * buffered.subscribe(x => console.log(x));\n * ```\n *\n * On every click, emit the last two click events as an array\n *\n * ```ts\n * import { fromEvent, bufferCount } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const buffered = clicks.pipe(bufferCount(2, 1));\n * buffered.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link buffer}\n * @see {@link bufferTime}\n * @see {@link bufferToggle}\n * @see {@link bufferWhen}\n * @see {@link pairwise}\n * @see {@link windowCount}\n *\n * @param {number} bufferSize The maximum size of the buffer emitted.\n * @param {number} [startBufferEvery] Interval at which to start a new buffer.\n * For example if `startBufferEvery` is `2`, then a new buffer will be started\n * on every other value from the source. A new buffer is started at the\n * beginning of the source by default.\n * @return A function that returns an Observable of arrays of buffered values.\n */\nexport function bufferCount<T>(bufferSize: number, startBufferEvery: number | null = null): OperatorFunction<T, T[]> {\n // If no `startBufferEvery` value was supplied, then we're\n // opening and closing on the bufferSize itself.\n startBufferEvery = startBufferEvery ?? bufferSize;\n\n return operate((source, subscriber) => {\n let buffers: T[][] = [];\n let count = 0;\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n let toEmit: T[][] | null = null;\n\n // Check to see if we need to start a buffer.\n // This will start one at the first value, and then\n // a new one every N after that.\n if (count++ % startBufferEvery! === 0) {\n buffers.push([]);\n }\n\n // Push our value into our active buffers.\n for (const buffer of buffers) {\n buffer.push(value);\n // Check to see if we're over the bufferSize\n // if we are, record it so we can emit it later.\n // If we emitted it now and removed it, it would\n // mutate the `buffers` array while we're looping\n // over it.\n if (bufferSize <= buffer.length) {\n toEmit = toEmit ?? [];\n toEmit.push(buffer);\n }\n }\n\n if (toEmit) {\n // We have found some buffers that are over the\n // `bufferSize`. Emit them, and remove them from our\n // buffers list.\n for (const buffer of toEmit) {\n arrRemove(buffers, buffer);\n subscriber.next(buffer);\n }\n }\n },\n () => {\n // When the source completes, emit all of our\n // active buffers.\n for (const buffer of buffers) {\n subscriber.next(buffer);\n }\n subscriber.complete();\n },\n // Pass all errors through to consumer.\n undefined,\n () => {\n // Clean up our memory when we finalize\n buffers = null!;\n }\n )\n );\n });\n}\n", "import { Observable } from '../Observable';\n\nimport { ObservableInput, OperatorFunction, ObservedValueOf } from '../types';\nimport { Subscription } from '../Subscription';\nimport { innerFrom } from '../observable/innerFrom';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { operate } from '../util/lift';\n\n/* tslint:disable:max-line-length */\nexport function catchError<T, O extends ObservableInput<any>>(\n selector: (err: any, caught: Observable<T>) => O\n): OperatorFunction<T, T | ObservedValueOf<O>>;\n/* tslint:enable:max-line-length */\n\n/**\n * Catches errors on the observable to be handled by returning a new observable or throwing an error.\n *\n * <span class=\"informal\">\n * It only listens to the error channel and ignores notifications.\n * Handles errors from the source observable, and maps them to a new observable.\n * The error may also be rethrown, or a new error can be thrown to emit an error from the result.\n * </span>\n *\n * \n *\n * This operator handles errors, but forwards along all other events to the resulting observable.\n * If the source observable terminates with an error, it will map that error to a new observable,\n * subscribe to it, and forward all of its events to the resulting observable.\n *\n * ## Examples\n *\n * Continue with a different Observable when there's an error\n *\n * ```ts\n * import { of, map, catchError } from 'rxjs';\n *\n * of(1, 2, 3, 4, 5)\n * .pipe(\n * map(n => {\n * if (n === 4) {\n * throw 'four!';\n * }\n * return n;\n * }),\n * catchError(err => of('I', 'II', 'III', 'IV', 'V'))\n * )\n * .subscribe(x => console.log(x));\n * // 1, 2, 3, I, II, III, IV, V\n * ```\n *\n * Retry the caught source Observable again in case of error, similar to `retry()` operator\n *\n * ```ts\n * import { of, map, catchError, take } from 'rxjs';\n *\n * of(1, 2, 3, 4, 5)\n * .pipe(\n * map(n => {\n * if (n === 4) {\n * throw 'four!';\n * }\n * return n;\n * }),\n * catchError((err, caught) => caught),\n * take(30)\n * )\n * .subscribe(x => console.log(x));\n * // 1, 2, 3, 1, 2, 3, ...\n * ```\n *\n * Throw a new error when the source Observable throws an error\n *\n * ```ts\n * import { of, map, catchError } from 'rxjs';\n *\n * of(1, 2, 3, 4, 5)\n * .pipe(\n * map(n => {\n * if (n === 4) {\n * throw 'four!';\n * }\n * return n;\n * }),\n * catchError(err => {\n * throw 'error in source. Details: ' + err;\n * })\n * )\n * .subscribe({\n * next: x => console.log(x),\n * error: err => console.log(err)\n * });\n * // 1, 2, 3, error in source. Details: four!\n * ```\n *\n * @see {@link onErrorResumeNext}\n * @see {@link repeat}\n * @see {@link repeatWhen}\n * @see {@link retry }\n * @see {@link retryWhen}\n *\n * @param {function} selector a function that takes as arguments `err`, which is the error, and `caught`, which\n * is the source observable, in case you'd like to \"retry\" that observable by returning it again. Whatever observable\n * is returned by the `selector` will be used to continue the observable chain.\n * @return A function that returns an Observable that originates from either\n * the source or the Observable returned by the `selector` function.\n */\nexport function catchError<T, O extends ObservableInput<any>>(\n selector: (err: any, caught: Observable<T>) => O\n): OperatorFunction<T, T | ObservedValueOf<O>> {\n return operate((source, subscriber) => {\n let innerSub: Subscription | null = null;\n let syncUnsub = false;\n let handledResult: Observable<ObservedValueOf<O>>;\n\n innerSub = source.subscribe(\n createOperatorSubscriber(subscriber, undefined, undefined, (err) => {\n handledResult = innerFrom(selector(err, catchError(selector)(source)));\n if (innerSub) {\n innerSub.unsubscribe();\n innerSub = null;\n handledResult.subscribe(subscriber);\n } else {\n // We don't have an innerSub yet, that means the error was synchronous\n // because the subscribe call hasn't returned yet.\n syncUnsub = true;\n }\n })\n );\n\n if (syncUnsub) {\n // We have a synchronous error, we need to make sure to\n // finalize right away. This ensures that callbacks in the `finalize` operator are called\n // at the right time, and that finalization occurs at the expected\n // time between the source error and the subscription to the\n // next observable.\n innerSub.unsubscribe();\n innerSub = null;\n handledResult!.subscribe(subscriber);\n }\n });\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * A basic scan operation. This is used for `scan` and `reduce`.\n * @param accumulator The accumulator to use\n * @param seed The seed value for the state to accumulate\n * @param hasSeed Whether or not a seed was provided\n * @param emitOnNext Whether or not to emit the state on next\n * @param emitBeforeComplete Whether or not to emit the before completion\n */\n\nexport function scanInternals<V, A, S>(\n accumulator: (acc: V | A | S, value: V, index: number) => A,\n seed: S,\n hasSeed: boolean,\n emitOnNext: boolean,\n emitBeforeComplete?: undefined | true\n) {\n return (source: Observable<V>, subscriber: Subscriber<any>) => {\n // Whether or not we have state yet. This will only be\n // false before the first value arrives if we didn't get\n // a seed value.\n let hasState = hasSeed;\n // The state that we're tracking, starting with the seed,\n // if there is one, and then updated by the return value\n // from the accumulator on each emission.\n let state: any = seed;\n // An index to pass to the accumulator function.\n let index = 0;\n\n // Subscribe to our source. All errors and completions are passed through.\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // Always increment the index.\n const i = index++;\n // Set the state\n state = hasState\n ? // We already have state, so we can get the new state from the accumulator\n accumulator(state, value, i)\n : // We didn't have state yet, a seed value was not provided, so\n\n // we set the state to the first value, and mark that we have state now\n ((hasState = true), value);\n\n // Maybe send it to the consumer.\n emitOnNext && subscriber.next(state);\n },\n // If an onComplete was given, call it, otherwise\n // just pass through the complete notification to the consumer.\n emitBeforeComplete &&\n (() => {\n hasState && subscriber.next(state);\n subscriber.complete();\n })\n )\n );\n };\n}\n", "import { combineLatestInit } from '../observable/combineLatest';\nimport { ObservableInput, ObservableInputTuple, OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { pipe } from '../util/pipe';\nimport { popResultSelector } from '../util/args';\n\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(\n sources: [...ObservableInputTuple<A>],\n project: (...values: [T, ...A]) => R\n): OperatorFunction<T, R>;\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(sources: [...ObservableInputTuple<A>]): OperatorFunction<T, [T, ...A]>;\n\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(\n ...sourcesAndProject: [...ObservableInputTuple<A>, (...values: [T, ...A]) => R]\n): OperatorFunction<T, R>;\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(...sources: [...ObservableInputTuple<A>]): OperatorFunction<T, [T, ...A]>;\n\n/**\n * @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8.\n */\nexport function combineLatest<T, R>(...args: (ObservableInput<any> | ((...values: any[]) => R))[]): OperatorFunction<T, unknown> {\n const resultSelector = popResultSelector(args);\n return resultSelector\n ? pipe(combineLatest(...(args as Array<ObservableInput<any>>)), mapOneOrManyArgs(resultSelector))\n : operate((source, subscriber) => {\n combineLatestInit([source, ...argsOrArgArray(args)])(subscriber);\n });\n}\n", "import { ObservableInputTuple, OperatorFunction, Cons } from '../types';\nimport { combineLatest } from './combineLatest';\n\n/**\n * Create an observable that combines the latest values from all passed observables and the source\n * into arrays and emits them.\n *\n * Returns an observable, that when subscribed to, will subscribe to the source observable and all\n * sources provided as arguments. Once all sources emit at least one value, all of the latest values\n * will be emitted as an array. After that, every time any source emits a value, all of the latest values\n * will be emitted as an array.\n *\n * This is a useful operator for eagerly calculating values based off of changed inputs.\n *\n * ## Example\n *\n * Simple concatenation of values from two inputs\n *\n * ```ts\n * import { fromEvent, combineLatestWith, map } from 'rxjs';\n *\n * // Setup: Add two inputs to the page\n * const input1 = document.createElement('input');\n * document.body.appendChild(input1);\n * const input2 = document.createElement('input');\n * document.body.appendChild(input2);\n *\n * // Get streams of changes\n * const input1Changes$ = fromEvent(input1, 'change');\n * const input2Changes$ = fromEvent(input2, 'change');\n *\n * // Combine the changes by adding them together\n * input1Changes$.pipe(\n * combineLatestWith(input2Changes$),\n * map(([e1, e2]) => (<HTMLInputElement>e1.target).value + ' - ' + (<HTMLInputElement>e2.target).value)\n * )\n * .subscribe(x => console.log(x));\n * ```\n *\n * @param otherSources the other sources to subscribe to.\n * @return A function that returns an Observable that emits the latest\n * emissions from both source and provided Observables.\n */\nexport function combineLatestWith<T, A extends readonly unknown[]>(\n ...otherSources: [...ObservableInputTuple<A>]\n): OperatorFunction<T, Cons<T, A>> {\n return combineLatest(...otherSources);\n}\n", "import { Subscriber } from '../Subscriber';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { noop } from '../util/noop';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\n\n/**\n * Emits a notification from the source Observable only after a particular time span\n * determined by another Observable has passed without another source emission.\n *\n * <span class=\"informal\">It's like {@link debounceTime}, but the time span of\n * emission silence is determined by a second Observable.</span>\n *\n * \n *\n * `debounce` delays notifications emitted by the source Observable, but drops previous\n * pending delayed emissions if a new notification arrives on the source Observable.\n * This operator keeps track of the most recent notification from the source\n * Observable, and spawns a duration Observable by calling the\n * `durationSelector` function. The notification is emitted only when the duration\n * Observable emits a next notification, and if no other notification was emitted on\n * the source Observable since the duration Observable was spawned. If a new\n * notification appears before the duration Observable emits, the previous notification will\n * not be emitted and a new duration is scheduled from `durationSelector` is scheduled.\n * If the completing event happens during the scheduled duration the last cached notification\n * is emitted before the completion event is forwarded to the output observable.\n * If the error event happens during the scheduled duration or after it only the error event is\n * forwarded to the output observable. The cache notification is not emitted in this case.\n *\n * Like {@link debounceTime}, this is a rate-limiting operator, and also a\n * delay-like operator since output emissions do not necessarily occur at the\n * same time as they did on the source Observable.\n *\n * ## Example\n *\n * Emit the most recent click after a burst of clicks\n *\n * ```ts\n * import { fromEvent, scan, debounce, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(\n * scan(i => ++i, 1),\n * debounce(i => interval(200 * i))\n * );\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link auditTime}\n * @see {@link debounceTime}\n * @see {@link delay}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link throttle}\n * @see {@link throttleTime}\n *\n * @param durationSelector A function\n * that receives a value from the source Observable, for computing the timeout\n * duration for each source value, returned as an Observable or a Promise.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by the specified duration Observable returned by\n * `durationSelector`, and may drop some values if they occur too frequently.\n */\nexport function debounce<T>(durationSelector: (value: T) => ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let hasValue = false;\n let lastValue: T | null = null;\n // The subscriber/subscription for the current debounce, if there is one.\n let durationSubscriber: Subscriber<any> | null = null;\n\n const emit = () => {\n // Unsubscribe any current debounce subscription we have,\n // we only cared about the first notification from it, and we\n // want to clean that subscription up as soon as possible.\n durationSubscriber?.unsubscribe();\n durationSubscriber = null;\n if (hasValue) {\n // We have a value! Free up memory first, then emit the value.\n hasValue = false;\n const value = lastValue!;\n lastValue = null;\n subscriber.next(value);\n }\n };\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value: T) => {\n // Cancel any pending debounce duration. We don't\n // need to null it out here yet tho, because we're just going\n // to create another one in a few lines.\n durationSubscriber?.unsubscribe();\n hasValue = true;\n lastValue = value;\n // Capture our duration subscriber, so we can unsubscribe it when we're notified\n // and we're going to emit the value.\n durationSubscriber = createOperatorSubscriber(subscriber, emit, noop);\n // Subscribe to the duration.\n innerFrom(durationSelector(value)).subscribe(durationSubscriber);\n },\n () => {\n // Source completed.\n // Emit any pending debounced values then complete\n emit();\n subscriber.complete();\n },\n // Pass all errors through to consumer\n undefined,\n () => {\n // Finalization.\n lastValue = durationSubscriber = null;\n }\n )\n );\n });\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { Subscription } from '../Subscription';\nimport { MonoTypeOperatorFunction, SchedulerAction, SchedulerLike } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Emits a notification from the source Observable only after a particular time span\n * has passed without another source emission.\n *\n * <span class=\"informal\">It's like {@link delay}, but passes only the most\n * recent notification from each burst of emissions.</span>\n *\n * \n *\n * `debounceTime` delays notifications emitted by the source Observable, but drops\n * previous pending delayed emissions if a new notification arrives on the source\n * Observable. This operator keeps track of the most recent notification from the\n * source Observable, and emits that only when `dueTime` has passed\n * without any other notification appearing on the source Observable. If a new value\n * appears before `dueTime` silence occurs, the previous notification will be dropped\n * and will not be emitted and a new `dueTime` is scheduled.\n * If the completing event happens during `dueTime` the last cached notification\n * is emitted before the completion event is forwarded to the output observable.\n * If the error event happens during `dueTime` or after it only the error event is\n * forwarded to the output observable. The cache notification is not emitted in this case.\n *\n * This is a rate-limiting operator, because it is impossible for more than one\n * notification to be emitted in any time window of duration `dueTime`, but it is also\n * a delay-like operator since output emissions do not occur at the same time as\n * they did on the source Observable. Optionally takes a {@link SchedulerLike} for\n * managing timers.\n *\n * ## Example\n *\n * Emit the most recent click after a burst of clicks\n *\n * ```ts\n * import { fromEvent, debounceTime } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(debounceTime(1000));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link auditTime}\n * @see {@link debounce}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link throttle}\n * @see {@link throttleTime}\n *\n * @param {number} dueTime The timeout duration in milliseconds (or the time\n * unit determined internally by the optional `scheduler`) for the window of\n * time required to wait for emission silence before emitting the most recent\n * source value.\n * @param {SchedulerLike} [scheduler=async] The {@link SchedulerLike} to use for\n * managing the timers that handle the timeout for each value.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by the specified `dueTime`, and may drop some values\n * if they occur too frequently.\n */\nexport function debounceTime<T>(dueTime: number, scheduler: SchedulerLike = asyncScheduler): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let activeTask: Subscription | null = null;\n let lastValue: T | null = null;\n let lastTime: number | null = null;\n\n const emit = () => {\n if (activeTask) {\n // We have a value! Free up memory first, then emit the value.\n activeTask.unsubscribe();\n activeTask = null;\n const value = lastValue!;\n lastValue = null;\n subscriber.next(value);\n }\n };\n function emitWhenIdle(this: SchedulerAction<unknown>) {\n // This is called `dueTime` after the first value\n // but we might have received new values during this window!\n\n const targetTime = lastTime! + dueTime;\n const now = scheduler.now();\n if (now < targetTime) {\n // On that case, re-schedule to the new target\n activeTask = this.schedule(undefined, targetTime - now);\n subscriber.add(activeTask);\n return;\n }\n\n emit();\n }\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value: T) => {\n lastValue = value;\n lastTime = scheduler.now();\n\n // Only set up a task if it's not already up\n if (!activeTask) {\n activeTask = scheduler.schedule(emitWhenIdle, dueTime);\n subscriber.add(activeTask);\n }\n },\n () => {\n // Source completed.\n // Emit any pending debounced values then complete\n emit();\n subscriber.complete();\n },\n // Pass all errors through to consumer.\n undefined,\n () => {\n // Finalization.\n lastValue = activeTask = null;\n }\n )\n );\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Emits a given value if the source Observable completes without emitting any\n * `next` value, otherwise mirrors the source Observable.\n *\n * <span class=\"informal\">If the source Observable turns out to be empty, then\n * this operator will emit a default value.</span>\n *\n * \n *\n * `defaultIfEmpty` emits the values emitted by the source Observable or a\n * specified default value if the source Observable is empty (completes without\n * having emitted any `next` value).\n *\n * ## Example\n *\n * If no clicks happen in 5 seconds, then emit 'no clicks'\n *\n * ```ts\n * import { fromEvent, takeUntil, interval, defaultIfEmpty } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const clicksBeforeFive = clicks.pipe(takeUntil(interval(5000)));\n * const result = clicksBeforeFive.pipe(defaultIfEmpty('no clicks'));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link empty}\n * @see {@link last}\n *\n * @param defaultValue The default value used if the source\n * Observable is empty.\n * @return A function that returns an Observable that emits either the\n * specified `defaultValue` if the source Observable emits no items, or the\n * values emitted by the source Observable.\n */\nexport function defaultIfEmpty<T, R>(defaultValue: R): OperatorFunction<T, T | R> {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n hasValue = true;\n subscriber.next(value);\n },\n () => {\n if (!hasValue) {\n subscriber.next(defaultValue!);\n }\n subscriber.complete();\n }\n )\n );\n });\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Emits only the first `count` values emitted by the source Observable.\n *\n * <span class=\"informal\">Takes the first `count` values from the source, then\n * completes.</span>\n *\n * \n *\n * `take` returns an Observable that emits only the first `count` values emitted\n * by the source Observable. If the source emits fewer than `count` values then\n * all of its values are emitted. After that, it completes, regardless if the\n * source completes.\n *\n * ## Example\n *\n * Take the first 5 seconds of an infinite 1-second interval Observable\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const intervalCount = interval(1000);\n * const takeFive = intervalCount.pipe(take(5));\n * takeFive.subscribe(x => console.log(x));\n *\n * // Logs:\n * // 0\n * // 1\n * // 2\n * // 3\n * // 4\n * ```\n *\n * @see {@link takeLast}\n * @see {@link takeUntil}\n * @see {@link takeWhile}\n * @see {@link skip}\n *\n * @param count The maximum number of `next` values to emit.\n * @return A function that returns an Observable that emits only the first\n * `count` values emitted by the source Observable, or all of the values from\n * the source if the source emits fewer than `count` values.\n */\nexport function take<T>(count: number): MonoTypeOperatorFunction<T> {\n return count <= 0\n ? // If we are taking no values, that's empty.\n () => EMPTY\n : operate((source, subscriber) => {\n let seen = 0;\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n // Increment the number of values we have seen,\n // then check it against the allowed count to see\n // if we are still letting values through.\n if (++seen <= count) {\n subscriber.next(value);\n // If we have met or passed our allowed count,\n // we need to complete. We have to do <= here,\n // because re-entrant code will increment `seen` twice.\n if (count <= seen) {\n subscriber.complete();\n }\n }\n })\n );\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { noop } from '../util/noop';\n\n/**\n * Ignores all items emitted by the source Observable and only passes calls of `complete` or `error`.\n *\n * \n *\n * The `ignoreElements` operator suppresses all items emitted by the source Observable,\n * but allows its termination notification (either `error` or `complete`) to pass through unchanged.\n *\n * If you do not care about the items being emitted by an Observable, but you do want to be notified\n * when it completes or when it terminates with an error, you can apply the `ignoreElements` operator\n * to the Observable, which will ensure that it will never call its observers\u2019 `next` handlers.\n *\n * ## Example\n *\n * Ignore all `next` emissions from the source\n *\n * ```ts\n * import { of, ignoreElements } from 'rxjs';\n *\n * of('you', 'talking', 'to', 'me')\n * .pipe(ignoreElements())\n * .subscribe({\n * next: word => console.log(word),\n * error: err => console.log('error:', err),\n * complete: () => console.log('the end'),\n * });\n *\n * // result:\n * // 'the end'\n * ```\n *\n * @return A function that returns an empty Observable that only calls\n * `complete` or `error`, based on which one is called by the source\n * Observable.\n */\nexport function ignoreElements(): OperatorFunction<unknown, never> {\n return operate((source, subscriber) => {\n source.subscribe(createOperatorSubscriber(subscriber, noop));\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { map } from './map';\n\n/** @deprecated To be removed in v9. Use {@link map} instead: `map(() => value)`. */\nexport function mapTo<R>(value: R): OperatorFunction<unknown, R>;\n/**\n * @deprecated Do not specify explicit type parameters. Signatures with type parameters\n * that cannot be inferred will be removed in v8. `mapTo` itself will be removed in v9,\n * use {@link map} instead: `map(() => value)`.\n * */\nexport function mapTo<T, R>(value: R): OperatorFunction<T, R>;\n\n/**\n * Emits the given constant value on the output Observable every time the source\n * Observable emits a value.\n *\n * <span class=\"informal\">Like {@link map}, but it maps every source value to\n * the same output value every time.</span>\n *\n * \n *\n * Takes a constant `value` as argument, and emits that whenever the source\n * Observable emits a value. In other words, ignores the actual source value,\n * and simply uses the emission moment to know when to emit the given `value`.\n *\n * ## Example\n *\n * Map every click to the string `'Hi'`\n *\n * ```ts\n * import { fromEvent, mapTo } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const greetings = clicks.pipe(mapTo('Hi'));\n *\n * greetings.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link map}\n *\n * @param value The value to map each source value to.\n * @return A function that returns an Observable that emits the given `value`\n * every time the source Observable emits.\n * @deprecated To be removed in v9. Use {@link map} instead: `map(() => value)`.\n */\nexport function mapTo<R>(value: R): OperatorFunction<unknown, R> {\n return map(() => value);\n}\n", "import { Observable } from '../Observable';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { concat } from '../observable/concat';\nimport { take } from './take';\nimport { ignoreElements } from './ignoreElements';\nimport { mapTo } from './mapTo';\nimport { mergeMap } from './mergeMap';\nimport { innerFrom } from '../observable/innerFrom';\n\n/** @deprecated The `subscriptionDelay` parameter will be removed in v8. */\nexport function delayWhen<T>(\n delayDurationSelector: (value: T, index: number) => ObservableInput<any>,\n subscriptionDelay: Observable<any>\n): MonoTypeOperatorFunction<T>;\nexport function delayWhen<T>(delayDurationSelector: (value: T, index: number) => ObservableInput<any>): MonoTypeOperatorFunction<T>;\n\n/**\n * Delays the emission of items from the source Observable by a given time span\n * determined by the emissions of another Observable.\n *\n * <span class=\"informal\">It's like {@link delay}, but the time span of the\n * delay duration is determined by a second Observable.</span>\n *\n * \n *\n * `delayWhen` operator shifts each emitted value from the source Observable by\n * a time span determined by another Observable. When the source emits a value,\n * the `delayDurationSelector` function is called with the value emitted from\n * the source Observable as the first argument to the `delayDurationSelector`.\n * The `delayDurationSelector` function should return an {@link ObservableInput},\n * that is internally converted to an Observable that is called the \"duration\"\n * Observable.\n *\n * The source value is emitted on the output Observable only when the \"duration\"\n * Observable emits ({@link guide/glossary-and-semantics#next next}s) any value.\n * Upon that, the \"duration\" Observable gets unsubscribed.\n *\n * Before RxJS V7, the {@link guide/glossary-and-semantics#complete completion}\n * of the \"duration\" Observable would have been triggering the emission of the\n * source value to the output Observable, but with RxJS V7, this is not the case\n * anymore.\n *\n * Only next notifications (from the \"duration\" Observable) trigger values from\n * the source Observable to be passed to the output Observable. If the \"duration\"\n * Observable only emits the complete notification (without next), the value\n * emitted by the source Observable will never get to the output Observable - it\n * will be swallowed. If the \"duration\" Observable errors, the error will be\n * propagated to the output Observable.\n *\n * Optionally, `delayWhen` takes a second argument, `subscriptionDelay`, which\n * is an Observable. When `subscriptionDelay` emits its first value or\n * completes, the source Observable is subscribed to and starts behaving like\n * described in the previous paragraph. If `subscriptionDelay` is not provided,\n * `delayWhen` will subscribe to the source Observable as soon as the output\n * Observable is subscribed.\n *\n * ## Example\n *\n * Delay each click by a random amount of time, between 0 and 5 seconds\n *\n * ```ts\n * import { fromEvent, delayWhen, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const delayedClicks = clicks.pipe(\n * delayWhen(() => interval(Math.random() * 5000))\n * );\n * delayedClicks.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link delay}\n * @see {@link throttle}\n * @see {@link throttleTime}\n * @see {@link debounce}\n * @see {@link debounceTime}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link audit}\n * @see {@link auditTime}\n *\n * @param delayDurationSelector A function that returns an `ObservableInput` for\n * each `value` emitted by the source Observable, which is then used to delay the\n * emission of that `value` on the output Observable until the `ObservableInput`\n * returned from this function emits a next value. When called, beside `value`,\n * this function receives a zero-based `index` of the emission order.\n * @param subscriptionDelay An Observable that triggers the subscription to the\n * source Observable once it emits any value.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by an amount of time specified by the Observable\n * returned by `delayDurationSelector`.\n */\nexport function delayWhen<T>(\n delayDurationSelector: (value: T, index: number) => ObservableInput<any>,\n subscriptionDelay?: Observable<any>\n): MonoTypeOperatorFunction<T> {\n if (subscriptionDelay) {\n // DEPRECATED PATH\n return (source: Observable<T>) =>\n concat(subscriptionDelay.pipe(take(1), ignoreElements()), source.pipe(delayWhen(delayDurationSelector)));\n }\n\n return mergeMap((value, index) => innerFrom(delayDurationSelector(value, index)).pipe(take(1), mapTo(value)));\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { delayWhen } from './delayWhen';\nimport { timer } from '../observable/timer';\n\n/**\n * Delays the emission of items from the source Observable by a given timeout or\n * until a given Date.\n *\n * <span class=\"informal\">Time shifts each item by some specified amount of\n * milliseconds.</span>\n *\n * \n *\n * If the delay argument is a Number, this operator time shifts the source\n * Observable by that amount of time expressed in milliseconds. The relative\n * time intervals between the values are preserved.\n *\n * If the delay argument is a Date, this operator time shifts the start of the\n * Observable execution until the given date occurs.\n *\n * ## Examples\n *\n * Delay each click by one second\n *\n * ```ts\n * import { fromEvent, delay } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const delayedClicks = clicks.pipe(delay(1000)); // each click emitted after 1 second\n * delayedClicks.subscribe(x => console.log(x));\n * ```\n *\n * Delay all clicks until a future date happens\n *\n * ```ts\n * import { fromEvent, delay } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const date = new Date('March 15, 2050 12:00:00'); // in the future\n * const delayedClicks = clicks.pipe(delay(date)); // click emitted only after that date\n * delayedClicks.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link delayWhen}\n * @see {@link throttle}\n * @see {@link throttleTime}\n * @see {@link debounce}\n * @see {@link debounceTime}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link audit}\n * @see {@link auditTime}\n *\n * @param {number|Date} due The delay duration in milliseconds (a `number`) or\n * a `Date` until which the emission of the source items is delayed.\n * @param {SchedulerLike} [scheduler=async] The {@link SchedulerLike} to use for\n * managing the timers that handle the time-shift for each item.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by the specified timeout or Date.\n */\nexport function delay<T>(due: number | Date, scheduler: SchedulerLike = asyncScheduler): MonoTypeOperatorFunction<T> {\n const duration = timer(due, scheduler);\n return delayWhen(() => duration);\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { identity } from '../util/identity';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\nexport function distinctUntilChanged<T>(comparator?: (previous: T, current: T) => boolean): MonoTypeOperatorFunction<T>;\nexport function distinctUntilChanged<T, K>(\n comparator: (previous: K, current: K) => boolean,\n keySelector: (value: T) => K\n): MonoTypeOperatorFunction<T>;\n\n/**\n * Returns a result {@link Observable} that emits all values pushed by the source observable if they\n * are distinct in comparison to the last value the result observable emitted.\n *\n * When provided without parameters or with the first parameter (`{@link distinctUntilChanged#comparator comparator}`),\n * it behaves like this:\n *\n * 1. It will always emit the first value from the source.\n * 2. For all subsequent values pushed by the source, they will be compared to the previously emitted values\n * using the provided `comparator` or an `===` equality check.\n * 3. If the value pushed by the source is determined to be unequal by this check, that value is emitted and\n * becomes the new \"previously emitted value\" internally.\n *\n * When the second parameter (`{@link distinctUntilChanged#keySelector keySelector}`) is provided, the behavior\n * changes:\n *\n * 1. It will always emit the first value from the source.\n * 2. The `keySelector` will be run against all values, including the first value.\n * 3. For all values after the first, the selected key will be compared against the key selected from\n * the previously emitted value using the `comparator`.\n * 4. If the keys are determined to be unequal by this check, the value (not the key), is emitted\n * and the selected key from that value is saved for future comparisons against other keys.\n *\n * ## Examples\n *\n * A very basic example with no `{@link distinctUntilChanged#comparator comparator}`. Note that `1` is emitted more than once,\n * because it's distinct in comparison to the _previously emitted_ value,\n * not in comparison to _all other emitted values_.\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * of(1, 1, 1, 2, 2, 2, 1, 1, 3, 3)\n * .pipe(distinctUntilChanged())\n * .subscribe(console.log);\n * // Logs: 1, 2, 1, 3\n * ```\n *\n * With a `{@link distinctUntilChanged#comparator comparator}`, you can do custom comparisons. Let's say\n * you only want to emit a value when all of its components have\n * changed:\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * const totallyDifferentBuilds$ = of(\n * { engineVersion: '1.1.0', transmissionVersion: '1.2.0' },\n * { engineVersion: '1.1.0', transmissionVersion: '1.4.0' },\n * { engineVersion: '1.3.0', transmissionVersion: '1.4.0' },\n * { engineVersion: '1.3.0', transmissionVersion: '1.5.0' },\n * { engineVersion: '2.0.0', transmissionVersion: '1.5.0' }\n * ).pipe(\n * distinctUntilChanged((prev, curr) => {\n * return (\n * prev.engineVersion === curr.engineVersion ||\n * prev.transmissionVersion === curr.transmissionVersion\n * );\n * })\n * );\n *\n * totallyDifferentBuilds$.subscribe(console.log);\n *\n * // Logs:\n * // { engineVersion: '1.1.0', transmissionVersion: '1.2.0' }\n * // { engineVersion: '1.3.0', transmissionVersion: '1.4.0' }\n * // { engineVersion: '2.0.0', transmissionVersion: '1.5.0' }\n * ```\n *\n * You can also provide a custom `{@link distinctUntilChanged#comparator comparator}` to check that emitted\n * changes are only in one direction. Let's say you only want to get\n * the next record temperature:\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * const temps$ = of(30, 31, 20, 34, 33, 29, 35, 20);\n *\n * const recordHighs$ = temps$.pipe(\n * distinctUntilChanged((prevHigh, temp) => {\n * // If the current temp is less than\n * // or the same as the previous record,\n * // the record hasn't changed.\n * return temp <= prevHigh;\n * })\n * );\n *\n * recordHighs$.subscribe(console.log);\n * // Logs: 30, 31, 34, 35\n * ```\n *\n * Selecting update events only when the `updatedBy` field shows\n * the account changed hands.\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * // A stream of updates to a given account\n * const accountUpdates$ = of(\n * { updatedBy: 'blesh', data: [] },\n * { updatedBy: 'blesh', data: [] },\n * { updatedBy: 'ncjamieson', data: [] },\n * { updatedBy: 'ncjamieson', data: [] },\n * { updatedBy: 'blesh', data: [] }\n * );\n *\n * // We only want the events where it changed hands\n * const changedHands$ = accountUpdates$.pipe(\n * distinctUntilChanged(undefined, update => update.updatedBy)\n * );\n *\n * changedHands$.subscribe(console.log);\n * // Logs:\n * // { updatedBy: 'blesh', data: Array[0] }\n * // { updatedBy: 'ncjamieson', data: Array[0] }\n * // { updatedBy: 'blesh', data: Array[0] }\n * ```\n *\n * @see {@link distinct}\n * @see {@link distinctUntilKeyChanged}\n *\n * @param comparator A function used to compare the previous and current keys for\n * equality. Defaults to a `===` check.\n * @param keySelector Used to select a key value to be passed to the `comparator`.\n *\n * @return A function that returns an Observable that emits items from the\n * source Observable with distinct values.\n */\nexport function distinctUntilChanged<T, K>(\n comparator?: (previous: K, current: K) => boolean,\n keySelector: (value: T) => K = identity as (value: T) => K\n): MonoTypeOperatorFunction<T> {\n // We've been allowing `null` do be passed as the `compare`, so we can't do\n // a default value for the parameter, because that will only work\n // for `undefined`.\n comparator = comparator ?? defaultCompare;\n\n return operate((source, subscriber) => {\n // The previous key, used to compare against keys selected\n // from new arrivals to determine \"distinctiveness\".\n let previousKey: K;\n // Whether or not this is the first value we've gotten.\n let first = true;\n\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n // We always call the key selector.\n const currentKey = keySelector(value);\n\n // If it's the first value, we always emit it.\n // Otherwise, we compare this key to the previous key, and\n // if the comparer returns false, we emit.\n if (first || !comparator!(previousKey, currentKey)) {\n // Update our state *before* we emit the value\n // as emission can be the source of re-entrant code\n // in functional libraries like this. We only really\n // need to do this if it's the first value, or if the\n // key we're tracking in previous needs to change.\n first = false;\n previousKey = currentKey;\n\n // Emit the value!\n subscriber.next(value);\n }\n })\n );\n });\n}\n\nfunction defaultCompare(a: any, b: any) {\n return a === b;\n}\n", "import { distinctUntilChanged } from './distinctUntilChanged';\nimport { MonoTypeOperatorFunction } from '../types';\n\n/* tslint:disable:max-line-length */\nexport function distinctUntilKeyChanged<T>(key: keyof T): MonoTypeOperatorFunction<T>;\nexport function distinctUntilKeyChanged<T, K extends keyof T>(key: K, compare: (x: T[K], y: T[K]) => boolean): MonoTypeOperatorFunction<T>;\n/* tslint:enable:max-line-length */\n\n/**\n * Returns an Observable that emits all items emitted by the source Observable that are distinct by comparison from the previous item,\n * using a property accessed by using the key provided to check if the two items are distinct.\n *\n * If a comparator function is provided, then it will be called for each item to test for whether or not that value should be emitted.\n *\n * If a comparator function is not provided, an equality check is used by default.\n *\n * ## Examples\n *\n * An example comparing the name of persons\n *\n * ```ts\n * import { of, distinctUntilKeyChanged } from 'rxjs';\n *\n * of(\n * { age: 4, name: 'Foo' },\n * { age: 7, name: 'Bar' },\n * { age: 5, name: 'Foo' },\n * { age: 6, name: 'Foo' }\n * ).pipe(\n * distinctUntilKeyChanged('name')\n * )\n * .subscribe(x => console.log(x));\n *\n * // displays:\n * // { age: 4, name: 'Foo' }\n * // { age: 7, name: 'Bar' }\n * // { age: 5, name: 'Foo' }\n * ```\n *\n * An example comparing the first letters of the name\n *\n * ```ts\n * import { of, distinctUntilKeyChanged } from 'rxjs';\n *\n * of(\n * { age: 4, name: 'Foo1' },\n * { age: 7, name: 'Bar' },\n * { age: 5, name: 'Foo2' },\n * { age: 6, name: 'Foo3' }\n * ).pipe(\n * distinctUntilKeyChanged('name', (x, y) => x.substring(0, 3) === y.substring(0, 3))\n * )\n * .subscribe(x => console.log(x));\n *\n * // displays:\n * // { age: 4, name: 'Foo1' }\n * // { age: 7, name: 'Bar' }\n * // { age: 5, name: 'Foo2' }\n * ```\n *\n * @see {@link distinct}\n * @see {@link distinctUntilChanged}\n *\n * @param {string} key String key for object property lookup on each item.\n * @param {function} [compare] Optional comparison function called to test if an item is distinct from the previous item in the source.\n * @return A function that returns an Observable that emits items from the\n * source Observable with distinct values based on the key specified.\n */\nexport function distinctUntilKeyChanged<T, K extends keyof T>(key: K, compare?: (x: T[K], y: T[K]) => boolean): MonoTypeOperatorFunction<T> {\n return distinctUntilChanged((x: T, y: T) => compare ? compare(x[key], y[key]) : x[key] === y[key]);\n}\n", "import { EmptyError } from '../util/EmptyError';\nimport { MonoTypeOperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * If the source observable completes without emitting a value, it will emit\n * an error. The error will be created at that time by the optional\n * `errorFactory` argument, otherwise, the error will be {@link EmptyError}.\n *\n * \n *\n * ## Example\n *\n * Throw an error if the document wasn't clicked within 1 second\n *\n * ```ts\n * import { fromEvent, takeUntil, timer, throwIfEmpty } from 'rxjs';\n *\n * const click$ = fromEvent(document, 'click');\n *\n * click$.pipe(\n * takeUntil(timer(1000)),\n * throwIfEmpty(() => new Error('The document was not clicked within 1 second'))\n * )\n * .subscribe({\n * next() {\n * console.log('The document was clicked');\n * },\n * error(err) {\n * console.error(err.message);\n * }\n * });\n * ```\n *\n * @param errorFactory A factory function called to produce the\n * error to be thrown when the source observable completes without emitting a\n * value.\n * @return A function that returns an Observable that throws an error if the\n * source Observable completed without emitting.\n */\nexport function throwIfEmpty<T>(errorFactory: () => any = defaultErrorFactory): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n hasValue = true;\n subscriber.next(value);\n },\n () => (hasValue ? subscriber.complete() : subscriber.error(errorFactory()))\n )\n );\n });\n}\n\nfunction defaultErrorFactory() {\n return new EmptyError();\n}\n", "/** prettier */\nimport { Observable } from '../Observable';\nimport { concat } from '../observable/concat';\nimport { of } from '../observable/of';\nimport { MonoTypeOperatorFunction, SchedulerLike, OperatorFunction, ValueFromArray } from '../types';\n\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `concatAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function endWith<T>(scheduler: SchedulerLike): MonoTypeOperatorFunction<T>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `concatAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function endWith<T, A extends unknown[] = T[]>(\n ...valuesAndScheduler: [...A, SchedulerLike]\n): OperatorFunction<T, T | ValueFromArray<A>>;\n\nexport function endWith<T, A extends unknown[] = T[]>(...values: A): OperatorFunction<T, T | ValueFromArray<A>>;\n\n/**\n * Returns an observable that will emit all values from the source, then synchronously emit\n * the provided value(s) immediately after the source completes.\n *\n * NOTE: Passing a last argument of a Scheduler is _deprecated_, and may result in incorrect\n * types in TypeScript.\n *\n * This is useful for knowing when an observable ends. Particularly when paired with an\n * operator like {@link takeUntil}\n *\n * \n *\n * ## Example\n *\n * Emit values to know when an interval starts and stops. The interval will\n * stop when a user clicks anywhere on the document.\n *\n * ```ts\n * import { interval, map, fromEvent, startWith, takeUntil, endWith } from 'rxjs';\n *\n * const ticker$ = interval(5000).pipe(\n * map(() => 'tick')\n * );\n *\n * const documentClicks$ = fromEvent(document, 'click');\n *\n * ticker$.pipe(\n * startWith('interval started'),\n * takeUntil(documentClicks$),\n * endWith('interval ended by click')\n * )\n * .subscribe(x => console.log(x));\n *\n * // Result (assuming a user clicks after 15 seconds)\n * // 'interval started'\n * // 'tick'\n * // 'tick'\n * // 'tick'\n * // 'interval ended by click'\n * ```\n *\n * @see {@link startWith}\n * @see {@link concat}\n * @see {@link takeUntil}\n *\n * @param values Items you want the modified Observable to emit last.\n * @return A function that returns an Observable that emits all values from the\n * source, then synchronously emits the provided value(s) immediately after the\n * source completes.\n */\nexport function endWith<T>(...values: Array<T | SchedulerLike>): MonoTypeOperatorFunction<T> {\n return (source: Observable<T>) => concat(source, of(...values)) as Observable<T>;\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { operate } from '../util/lift';\n\n/**\n * Returns an Observable that mirrors the source Observable, but will call a specified function when\n * the source terminates on complete or error.\n * The specified function will also be called when the subscriber explicitly unsubscribes.\n *\n * ## Examples\n *\n * Execute callback function when the observable completes\n *\n * ```ts\n * import { interval, take, finalize } from 'rxjs';\n *\n * // emit value in sequence every 1 second\n * const source = interval(1000);\n * const example = source.pipe(\n * take(5), //take only the first 5 values\n * finalize(() => console.log('Sequence complete')) // Execute when the observable completes\n * );\n * const subscribe = example.subscribe(val => console.log(val));\n *\n * // results:\n * // 0\n * // 1\n * // 2\n * // 3\n * // 4\n * // 'Sequence complete'\n * ```\n *\n * Execute callback function when the subscriber explicitly unsubscribes\n *\n * ```ts\n * import { interval, finalize, tap, noop, timer } from 'rxjs';\n *\n * const source = interval(100).pipe(\n * finalize(() => console.log('[finalize] Called')),\n * tap({\n * next: () => console.log('[next] Called'),\n * error: () => console.log('[error] Not called'),\n * complete: () => console.log('[tap complete] Not called')\n * })\n * );\n *\n * const sub = source.subscribe({\n * next: x => console.log(x),\n * error: noop,\n * complete: () => console.log('[complete] Not called')\n * });\n *\n * timer(150).subscribe(() => sub.unsubscribe());\n *\n * // results:\n * // '[next] Called'\n * // 0\n * // '[finalize] Called'\n * ```\n *\n * @param {function} callback Function to be called when source terminates.\n * @return A function that returns an Observable that mirrors the source, but\n * will call the specified function on termination.\n */\nexport function finalize<T>(callback: () => void): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n // TODO: This try/finally was only added for `useDeprecatedSynchronousErrorHandling`.\n // REMOVE THIS WHEN THAT HOT GARBAGE IS REMOVED IN V8.\n try {\n source.subscribe(subscriber);\n } finally {\n subscriber.add(callback);\n }\n });\n}\n", "import { Observable } from '../Observable';\nimport { EmptyError } from '../util/EmptyError';\nimport { OperatorFunction, TruthyTypesOf } from '../types';\nimport { filter } from './filter';\nimport { take } from './take';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { identity } from '../util/identity';\n\nexport function first<T, D = T>(predicate?: null, defaultValue?: D): OperatorFunction<T, T | D>;\nexport function first<T>(predicate: BooleanConstructor): OperatorFunction<T, TruthyTypesOf<T>>;\nexport function first<T, D>(predicate: BooleanConstructor, defaultValue: D): OperatorFunction<T, TruthyTypesOf<T> | D>;\nexport function first<T, S extends T>(\n predicate: (value: T, index: number, source: Observable<T>) => value is S,\n defaultValue?: S\n): OperatorFunction<T, S>;\nexport function first<T, S extends T, D>(\n predicate: (value: T, index: number, source: Observable<T>) => value is S,\n defaultValue: D\n): OperatorFunction<T, S | D>;\nexport function first<T, D = T>(\n predicate: (value: T, index: number, source: Observable<T>) => boolean,\n defaultValue?: D\n): OperatorFunction<T, T | D>;\n\n/**\n * Emits only the first value (or the first value that meets some condition)\n * emitted by the source Observable.\n *\n * <span class=\"informal\">Emits only the first value. Or emits only the first\n * value that passes some test.</span>\n *\n * \n *\n * If called with no arguments, `first` emits the first value of the source\n * Observable, then completes. If called with a `predicate` function, `first`\n * emits the first value of the source that matches the specified condition. Throws an error if\n * `defaultValue` was not provided and a matching element is not found.\n *\n * ## Examples\n *\n * Emit only the first click that happens on the DOM\n *\n * ```ts\n * import { fromEvent, first } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(first());\n * result.subscribe(x => console.log(x));\n * ```\n *\n * Emits the first click that happens on a DIV\n *\n * ```ts\n * import { fromEvent, first } from 'rxjs';\n *\n * const div = document.createElement('div');\n * div.style.cssText = 'width: 200px; height: 200px; background: #09c;';\n * document.body.appendChild(div);\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(first(ev => (<HTMLElement>ev.target).tagName === 'DIV'));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link filter}\n * @see {@link find}\n * @see {@link take}\n *\n * @throws {EmptyError} Delivers an EmptyError to the Observer's `error`\n * callback if the Observable completes before any `next` notification was sent.\n * This is how `first()` is different from {@link take}(1) which completes instead.\n *\n * @param {function(value: T, index: number, source: Observable<T>): boolean} [predicate]\n * An optional function called with each item to test for condition matching.\n * @param {D} [defaultValue] The default value emitted in case no valid value\n * was found on the source.\n * @return A function that returns an Observable that emits the first item that\n * matches the condition.\n */\nexport function first<T, D>(\n predicate?: ((value: T, index: number, source: Observable<T>) => boolean) | null,\n defaultValue?: D\n): OperatorFunction<T, T | D> {\n const hasDefaultValue = arguments.length >= 2;\n return (source: Observable<T>) =>\n source.pipe(\n predicate ? filter((v, i) => predicate(v, i, source)) : identity,\n take(1),\n hasDefaultValue ? defaultIfEmpty(defaultValue!) : throwIfEmpty(() => new EmptyError())\n );\n}\n", "import { EMPTY } from '../observable/empty';\nimport { MonoTypeOperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Waits for the source to complete, then emits the last N values from the source,\n * as specified by the `count` argument.\n *\n * \n *\n * `takeLast` results in an observable that will hold values up to `count` values in memory,\n * until the source completes. It then pushes all values in memory to the consumer, in the\n * order they were received from the source, then notifies the consumer that it is\n * complete.\n *\n * If for some reason the source completes before the `count` supplied to `takeLast` is reached,\n * all values received until that point are emitted, and then completion is notified.\n *\n * **Warning**: Using `takeLast` with an observable that never completes will result\n * in an observable that never emits a value.\n *\n * ## Example\n *\n * Take the last 3 values of an Observable with many values\n *\n * ```ts\n * import { range, takeLast } from 'rxjs';\n *\n * const many = range(1, 100);\n * const lastThree = many.pipe(takeLast(3));\n * lastThree.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link take}\n * @see {@link takeUntil}\n * @see {@link takeWhile}\n * @see {@link skip}\n *\n * @param count The maximum number of values to emit from the end of\n * the sequence of values emitted by the source Observable.\n * @return A function that returns an Observable that emits at most the last\n * `count` values emitted by the source Observable.\n */\nexport function takeLast<T>(count: number): MonoTypeOperatorFunction<T> {\n return count <= 0\n ? () => EMPTY\n : operate((source, subscriber) => {\n // This buffer will hold the values we are going to emit\n // when the source completes. Since we only want to take the\n // last N values, we can't emit until we're sure we're not getting\n // any more values.\n let buffer: T[] = [];\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // Add the most recent value onto the end of our buffer.\n buffer.push(value);\n // If our buffer is now larger than the number of values we\n // want to take, we remove the oldest value from the buffer.\n count < buffer.length && buffer.shift();\n },\n () => {\n // The source completed, we now know what are last values\n // are, emit them in the order they were received.\n for (const value of buffer) {\n subscriber.next(value);\n }\n subscriber.complete();\n },\n // Errors are passed through to the consumer\n undefined,\n () => {\n // During finalization release the values in our buffer.\n buffer = null!;\n }\n )\n );\n });\n}\n", "import { ObservableInput, ObservableInputTuple, OperatorFunction, SchedulerLike } from '../types';\nimport { operate } from '../util/lift';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { mergeAll } from './mergeAll';\nimport { popNumber, popScheduler } from '../util/args';\nimport { from } from '../observable/from';\n\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): OperatorFunction<T, T | A[number]>;\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(\n ...sourcesAndConcurrency: [...ObservableInputTuple<A>, number]\n): OperatorFunction<T, T | A[number]>;\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(\n ...sourcesAndScheduler: [...ObservableInputTuple<A>, SchedulerLike]\n): OperatorFunction<T, T | A[number]>;\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(\n ...sourcesAndConcurrencyAndScheduler: [...ObservableInputTuple<A>, number, SchedulerLike]\n): OperatorFunction<T, T | A[number]>;\n\nexport function merge<T>(...args: unknown[]): OperatorFunction<T, unknown> {\n const scheduler = popScheduler(args);\n const concurrent = popNumber(args, Infinity);\n args = argsOrArgArray(args);\n\n return operate((source, subscriber) => {\n mergeAll(concurrent)(from([source, ...(args as ObservableInput<T>[])], scheduler)).subscribe(subscriber);\n });\n}\n", "import { ObservableInputTuple, OperatorFunction } from '../types';\nimport { merge } from './merge';\n\n/**\n * Merge the values from all observables to a single observable result.\n *\n * Creates an observable, that when subscribed to, subscribes to the source\n * observable, and all other sources provided as arguments. All values from\n * every source are emitted from the resulting subscription.\n *\n * When all sources complete, the resulting observable will complete.\n *\n * When any source errors, the resulting observable will error.\n *\n * ## Example\n *\n * Joining all outputs from multiple user input event streams\n *\n * ```ts\n * import { fromEvent, map, mergeWith } from 'rxjs';\n *\n * const clicks$ = fromEvent(document, 'click').pipe(map(() => 'click'));\n * const mousemoves$ = fromEvent(document, 'mousemove').pipe(map(() => 'mousemove'));\n * const dblclicks$ = fromEvent(document, 'dblclick').pipe(map(() => 'dblclick'));\n *\n * mousemoves$\n * .pipe(mergeWith(clicks$, dblclicks$))\n * .subscribe(x => console.log(x));\n *\n * // result (assuming user interactions)\n * // 'mousemove'\n * // 'mousemove'\n * // 'mousemove'\n * // 'click'\n * // 'click'\n * // 'dblclick'\n * ```\n *\n * @see {@link merge}\n *\n * @param otherSources the sources to combine the current source with.\n * @return A function that returns an Observable that merges the values from\n * all given Observables.\n */\nexport function mergeWith<T, A extends readonly unknown[]>(\n ...otherSources: [...ObservableInputTuple<A>]\n): OperatorFunction<T, T | A[number]> {\n return merge(...otherSources);\n}\n", "import { Subscription } from '../Subscription';\nimport { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { timer } from '../observable/timer';\n\nexport interface RepeatConfig {\n /**\n * The number of times to repeat the source. Defaults to `Infinity`.\n */\n count?: number;\n\n /**\n * If a `number`, will delay the repeat of the source by that number of milliseconds.\n * If a function, it will provide the number of times the source has been subscribed to,\n * and the return value should be a valid observable input that will notify when the source\n * should be repeated. If the notifier observable is empty, the result will complete.\n */\n delay?: number | ((count: number) => ObservableInput<any>);\n}\n\n/**\n * Returns an Observable that will resubscribe to the source stream when the source stream completes.\n *\n * <span class=\"informal\">Repeats all values emitted on the source. It's like {@link retry}, but for non error cases.</span>\n *\n * \n *\n * Repeat will output values from a source until the source completes, then it will resubscribe to the\n * source a specified number of times, with a specified delay. Repeat can be particularly useful in\n * combination with closing operators like {@link take}, {@link takeUntil}, {@link first}, or {@link takeWhile},\n * as it can be used to restart a source again from scratch.\n *\n * Repeat is very similar to {@link retry}, where {@link retry} will resubscribe to the source in the error case, but\n * `repeat` will resubscribe if the source completes.\n *\n * Note that `repeat` will _not_ catch errors. Use {@link retry} for that.\n *\n * - `repeat(0)` returns an empty observable\n * - `repeat()` will repeat forever\n * - `repeat({ delay: 200 })` will repeat forever, with a delay of 200ms between repetitions.\n * - `repeat({ count: 2, delay: 400 })` will repeat twice, with a delay of 400ms between repetitions.\n * - `repeat({ delay: (count) => timer(count * 1000) })` will repeat forever, but will have a delay that grows by one second for each repetition.\n *\n * ## Example\n *\n * Repeat a message stream\n *\n * ```ts\n * import { of, repeat } from 'rxjs';\n *\n * const source = of('Repeat message');\n * const result = source.pipe(repeat(3));\n *\n * result.subscribe(x => console.log(x));\n *\n * // Results\n * // 'Repeat message'\n * // 'Repeat message'\n * // 'Repeat message'\n * ```\n *\n * Repeat 3 values, 2 times\n *\n * ```ts\n * import { interval, take, repeat } from 'rxjs';\n *\n * const source = interval(1000);\n * const result = source.pipe(take(3), repeat(2));\n *\n * result.subscribe(x => console.log(x));\n *\n * // Results every second\n * // 0\n * // 1\n * // 2\n * // 0\n * // 1\n * // 2\n * ```\n *\n * Defining two complex repeats with delays on the same source.\n * Note that the second repeat cannot be called until the first\n * repeat as exhausted it's count.\n *\n * ```ts\n * import { defer, of, repeat } from 'rxjs';\n *\n * const source = defer(() => {\n * return of(`Hello, it is ${new Date()}`)\n * });\n *\n * source.pipe(\n * // Repeat 3 times with a delay of 1 second between repetitions\n * repeat({\n * count: 3,\n * delay: 1000,\n * }),\n *\n * // *Then* repeat forever, but with an exponential step-back\n * // maxing out at 1 minute.\n * repeat({\n * delay: (count) => timer(Math.min(60000, 2 ^ count * 1000))\n * })\n * )\n * ```\n *\n * @see {@link repeatWhen}\n * @see {@link retry}\n *\n * @param count The number of times the source Observable items are repeated, a count of 0 will yield\n * an empty Observable.\n */\nexport function repeat<T>(countOrConfig?: number | RepeatConfig): MonoTypeOperatorFunction<T> {\n let count = Infinity;\n let delay: RepeatConfig['delay'];\n\n if (countOrConfig != null) {\n if (typeof countOrConfig === 'object') {\n ({ count = Infinity, delay } = countOrConfig);\n } else {\n count = countOrConfig;\n }\n }\n\n return count <= 0\n ? () => EMPTY\n : operate((source, subscriber) => {\n let soFar = 0;\n let sourceSub: Subscription | null;\n\n const resubscribe = () => {\n sourceSub?.unsubscribe();\n sourceSub = null;\n if (delay != null) {\n const notifier = typeof delay === 'number' ? timer(delay) : innerFrom(delay(soFar));\n const notifierSubscriber = createOperatorSubscriber(subscriber, () => {\n notifierSubscriber.unsubscribe();\n subscribeToSource();\n });\n notifier.subscribe(notifierSubscriber);\n } else {\n subscribeToSource();\n }\n };\n\n const subscribeToSource = () => {\n let syncUnsub = false;\n sourceSub = source.subscribe(\n createOperatorSubscriber(subscriber, undefined, () => {\n if (++soFar < count) {\n if (sourceSub) {\n resubscribe();\n } else {\n syncUnsub = true;\n }\n } else {\n subscriber.complete();\n }\n })\n );\n\n if (syncUnsub) {\n resubscribe();\n }\n };\n\n subscribeToSource();\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { scanInternals } from './scanInternals';\n\nexport function scan<V, A = V>(accumulator: (acc: A | V, value: V, index: number) => A): OperatorFunction<V, V | A>;\nexport function scan<V, A>(accumulator: (acc: A, value: V, index: number) => A, seed: A): OperatorFunction<V, A>;\nexport function scan<V, A, S>(accumulator: (acc: A | S, value: V, index: number) => A, seed: S): OperatorFunction<V, A>;\n\n// TODO: link to a \"redux pattern\" section in the guide (location TBD)\n\n/**\n * Useful for encapsulating and managing state. Applies an accumulator (or \"reducer function\")\n * to each value from the source after an initial state is established -- either via\n * a `seed` value (second argument), or from the first value from the source.\n *\n * <span class=\"informal\">It's like {@link reduce}, but emits the current\n * accumulation state after each update</span>\n *\n * \n *\n * This operator maintains an internal state and emits it after processing each value as follows:\n *\n * 1. First value arrives\n * - If a `seed` value was supplied (as the second argument to `scan`), let `state = seed` and `value = firstValue`.\n * - If NO `seed` value was supplied (no second argument), let `state = firstValue` and go to 3.\n * 2. Let `state = accumulator(state, value)`.\n * - If an error is thrown by `accumulator`, notify the consumer of an error. The process ends.\n * 3. Emit `state`.\n * 4. Next value arrives, let `value = nextValue`, go to 2.\n *\n * ## Examples\n *\n * An average of previous numbers. This example shows how\n * not providing a `seed` can prime the stream with the\n * first value from the source.\n *\n * ```ts\n * import { of, scan, map } from 'rxjs';\n *\n * const numbers$ = of(1, 2, 3);\n *\n * numbers$\n * .pipe(\n * // Get the sum of the numbers coming in.\n * scan((total, n) => total + n),\n * // Get the average by dividing the sum by the total number\n * // received so far (which is 1 more than the zero-based index).\n * map((sum, index) => sum / (index + 1))\n * )\n * .subscribe(console.log);\n * ```\n *\n * The Fibonacci sequence. This example shows how you can use\n * a seed to prime accumulation process. Also... you know... Fibonacci.\n * So important to like, computers and stuff that its whiteboarded\n * in job interviews. Now you can show them the Rx version! (Please don't, haha)\n *\n * ```ts\n * import { interval, scan, map, startWith } from 'rxjs';\n *\n * const firstTwoFibs = [0, 1];\n * // An endless stream of Fibonacci numbers.\n * const fibonacci$ = interval(1000).pipe(\n * // Scan to get the fibonacci numbers (after 0, 1)\n * scan(([a, b]) => [b, a + b], firstTwoFibs),\n * // Get the second number in the tuple, it's the one you calculated\n * map(([, n]) => n),\n * // Start with our first two digits :)\n * startWith(...firstTwoFibs)\n * );\n *\n * fibonacci$.subscribe(console.log);\n * ```\n *\n * @see {@link expand}\n * @see {@link mergeScan}\n * @see {@link reduce}\n * @see {@link switchScan}\n *\n * @param accumulator A \"reducer function\". This will be called for each value after an initial state is\n * acquired.\n * @param seed The initial state. If this is not provided, the first value from the source will\n * be used as the initial state, and emitted without going through the accumulator. All subsequent values\n * will be processed by the accumulator function. If this is provided, all values will go through\n * the accumulator function.\n * @return A function that returns an Observable of the accumulated values.\n */\nexport function scan<V, A, S>(accumulator: (acc: V | A | S, value: V, index: number) => A, seed?: S): OperatorFunction<V, V | A> {\n // providing a seed of `undefined` *should* be valid and trigger\n // hasSeed! so don't use `seed !== undefined` checks!\n // For this reason, we have to check it here at the original call site\n // otherwise inside Operator/Subscriber we won't know if `undefined`\n // means they didn't provide anything or if they literally provided `undefined`\n return operate(scanInternals(accumulator, seed as S, arguments.length >= 2, true));\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { Subject } from '../Subject';\nimport { SafeSubscriber } from '../Subscriber';\nimport { Subscription } from '../Subscription';\nimport { MonoTypeOperatorFunction, SubjectLike, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\n\nexport interface ShareConfig<T> {\n /**\n * The factory used to create the subject that will connect the source observable to\n * multicast consumers.\n */\n connector?: () => SubjectLike<T>;\n /**\n * If `true`, the resulting observable will reset internal state on error from source and return to a \"cold\" state. This\n * allows the resulting observable to be \"retried\" in the event of an error.\n * If `false`, when an error comes from the source it will push the error into the connecting subject, and the subject\n * will remain the connecting subject, meaning the resulting observable will not go \"cold\" again, and subsequent retries\n * or resubscriptions will resubscribe to that same subject. In all cases, RxJS subjects will emit the same error again, however\n * {@link ReplaySubject} will also push its buffered values before pushing the error.\n * It is also possible to pass a notifier factory returning an `ObservableInput` instead which grants more fine-grained\n * control over how and when the reset should happen. This allows behaviors like conditional or delayed resets.\n */\n resetOnError?: boolean | ((error: any) => ObservableInput<any>);\n /**\n * If `true`, the resulting observable will reset internal state on completion from source and return to a \"cold\" state. This\n * allows the resulting observable to be \"repeated\" after it is done.\n * If `false`, when the source completes, it will push the completion through the connecting subject, and the subject\n * will remain the connecting subject, meaning the resulting observable will not go \"cold\" again, and subsequent repeats\n * or resubscriptions will resubscribe to that same subject.\n * It is also possible to pass a notifier factory returning an `ObservableInput` instead which grants more fine-grained\n * control over how and when the reset should happen. This allows behaviors like conditional or delayed resets.\n */\n resetOnComplete?: boolean | (() => ObservableInput<any>);\n /**\n * If `true`, when the number of subscribers to the resulting observable reaches zero due to those subscribers unsubscribing, the\n * internal state will be reset and the resulting observable will return to a \"cold\" state. This means that the next\n * time the resulting observable is subscribed to, a new subject will be created and the source will be subscribed to\n * again.\n * If `false`, when the number of subscribers to the resulting observable reaches zero due to unsubscription, the subject\n * will remain connected to the source, and new subscriptions to the result will be connected through that same subject.\n * It is also possible to pass a notifier factory returning an `ObservableInput` instead which grants more fine-grained\n * control over how and when the reset should happen. This allows behaviors like conditional or delayed resets.\n */\n resetOnRefCountZero?: boolean | (() => ObservableInput<any>);\n}\n\nexport function share<T>(): MonoTypeOperatorFunction<T>;\n\nexport function share<T>(options: ShareConfig<T>): MonoTypeOperatorFunction<T>;\n\n/**\n * Returns a new Observable that multicasts (shares) the original Observable. As long as there is at least one\n * Subscriber this Observable will be subscribed and emitting data. When all subscribers have unsubscribed it will\n * unsubscribe from the source Observable. Because the Observable is multicasting it makes the stream `hot`.\n * This is an alias for `multicast(() => new Subject()), refCount()`.\n *\n * The subscription to the underlying source Observable can be reset (unsubscribe and resubscribe for new subscribers),\n * if the subscriber count to the shared observable drops to 0, or if the source Observable errors or completes. It is\n * possible to use notifier factories for the resets to allow for behaviors like conditional or delayed resets. Please\n * note that resetting on error or complete of the source Observable does not behave like a transparent retry or restart\n * of the source because the error or complete will be forwarded to all subscribers and their subscription will be\n * closed. Only new subscribers after a reset on error or complete happened will cause a fresh subscription to the\n * source. To achieve transparent retries or restarts pipe the source through appropriate operators before sharing.\n *\n * \n *\n * ## Example\n *\n * Generate new multicast Observable from the `source` Observable value\n *\n * ```ts\n * import { interval, tap, map, take, share } from 'rxjs';\n *\n * const source = interval(1000).pipe(\n * tap(x => console.log('Processing: ', x)),\n * map(x => x * x),\n * take(6),\n * share()\n * );\n *\n * source.subscribe(x => console.log('subscription 1: ', x));\n * source.subscribe(x => console.log('subscription 2: ', x));\n *\n * // Logs:\n * // Processing: 0\n * // subscription 1: 0\n * // subscription 2: 0\n * // Processing: 1\n * // subscription 1: 1\n * // subscription 2: 1\n * // Processing: 2\n * // subscription 1: 4\n * // subscription 2: 4\n * // Processing: 3\n * // subscription 1: 9\n * // subscription 2: 9\n * // Processing: 4\n * // subscription 1: 16\n * // subscription 2: 16\n * // Processing: 5\n * // subscription 1: 25\n * // subscription 2: 25\n * ```\n *\n * ## Example with notifier factory: Delayed reset\n *\n * ```ts\n * import { interval, take, share, timer } from 'rxjs';\n *\n * const source = interval(1000).pipe(\n * take(3),\n * share({\n * resetOnRefCountZero: () => timer(1000)\n * })\n * );\n *\n * const subscriptionOne = source.subscribe(x => console.log('subscription 1: ', x));\n * setTimeout(() => subscriptionOne.unsubscribe(), 1300);\n *\n * setTimeout(() => source.subscribe(x => console.log('subscription 2: ', x)), 1700);\n *\n * setTimeout(() => source.subscribe(x => console.log('subscription 3: ', x)), 5000);\n *\n * // Logs:\n * // subscription 1: 0\n * // (subscription 1 unsubscribes here)\n * // (subscription 2 subscribes here ~400ms later, source was not reset)\n * // subscription 2: 1\n * // subscription 2: 2\n * // (subscription 2 unsubscribes here)\n * // (subscription 3 subscribes here ~2000ms later, source did reset before)\n * // subscription 3: 0\n * // subscription 3: 1\n * // subscription 3: 2\n * ```\n *\n * @see {@link shareReplay}\n *\n * @return A function that returns an Observable that mirrors the source.\n */\nexport function share<T>(options: ShareConfig<T> = {}): MonoTypeOperatorFunction<T> {\n const { connector = () => new Subject<T>(), resetOnError = true, resetOnComplete = true, resetOnRefCountZero = true } = options;\n // It's necessary to use a wrapper here, as the _operator_ must be\n // referentially transparent. Otherwise, it cannot be used in calls to the\n // static `pipe` function - to create a partial pipeline.\n //\n // The _operator function_ - the function returned by the _operator_ - will\n // not be referentially transparent - as it shares its source - but the\n // _operator function_ is called when the complete pipeline is composed via a\n // call to a source observable's `pipe` method - not when the static `pipe`\n // function is called.\n return (wrapperSource) => {\n let connection: SafeSubscriber<T> | undefined;\n let resetConnection: Subscription | undefined;\n let subject: SubjectLike<T> | undefined;\n let refCount = 0;\n let hasCompleted = false;\n let hasErrored = false;\n\n const cancelReset = () => {\n resetConnection?.unsubscribe();\n resetConnection = undefined;\n };\n // Used to reset the internal state to a \"cold\"\n // state, as though it had never been subscribed to.\n const reset = () => {\n cancelReset();\n connection = subject = undefined;\n hasCompleted = hasErrored = false;\n };\n const resetAndUnsubscribe = () => {\n // We need to capture the connection before\n // we reset (if we need to reset).\n const conn = connection;\n reset();\n conn?.unsubscribe();\n };\n\n return operate<T, T>((source, subscriber) => {\n refCount++;\n if (!hasErrored && !hasCompleted) {\n cancelReset();\n }\n\n // Create the subject if we don't have one yet. Grab a local reference to\n // it as well, which avoids non-null assertions when using it and, if we\n // connect to it now, then error/complete need a reference after it was\n // reset.\n const dest = (subject = subject ?? connector());\n\n // Add the finalization directly to the subscriber - instead of returning it -\n // so that the handling of the subscriber's unsubscription will be wired\n // up _before_ the subscription to the source occurs. This is done so that\n // the assignment to the source connection's `closed` property will be seen\n // by synchronous firehose sources.\n subscriber.add(() => {\n refCount--;\n\n // If we're resetting on refCount === 0, and it's 0, we only want to do\n // that on \"unsubscribe\", really. Resetting on error or completion is a different\n // configuration.\n if (refCount === 0 && !hasErrored && !hasCompleted) {\n resetConnection = handleReset(resetAndUnsubscribe, resetOnRefCountZero);\n }\n });\n\n // The following line adds the subscription to the subscriber passed.\n // Basically, `subscriber === dest.subscribe(subscriber)` is `true`.\n dest.subscribe(subscriber);\n\n if (\n !connection &&\n // Check this shareReplay is still activate - it can be reset to 0\n // and be \"unsubscribed\" _before_ it actually subscribes.\n // If we were to subscribe then, it'd leak and get stuck.\n refCount > 0\n ) {\n // We need to create a subscriber here - rather than pass an observer and\n // assign the returned subscription to connection - because it's possible\n // for reentrant subscriptions to the shared observable to occur and in\n // those situations we want connection to be already-assigned so that we\n // don't create another connection to the source.\n connection = new SafeSubscriber({\n next: (value) => dest.next(value),\n error: (err) => {\n hasErrored = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnError, err);\n dest.error(err);\n },\n complete: () => {\n hasCompleted = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnComplete);\n dest.complete();\n },\n });\n innerFrom(source).subscribe(connection);\n }\n })(wrapperSource);\n };\n}\n\nfunction handleReset<T extends unknown[] = never[]>(\n reset: () => void,\n on: boolean | ((...args: T) => ObservableInput<any>),\n ...args: T\n): Subscription | undefined {\n if (on === true) {\n reset();\n return;\n }\n\n if (on === false) {\n return;\n }\n\n const onSubscriber = new SafeSubscriber({\n next: () => {\n onSubscriber.unsubscribe();\n reset();\n },\n });\n\n return innerFrom(on(...args)).subscribe(onSubscriber);\n}\n", "import { ReplaySubject } from '../ReplaySubject';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { share } from './share';\n\nexport interface ShareReplayConfig {\n bufferSize?: number;\n windowTime?: number;\n refCount: boolean;\n scheduler?: SchedulerLike;\n}\n\nexport function shareReplay<T>(config: ShareReplayConfig): MonoTypeOperatorFunction<T>;\nexport function shareReplay<T>(bufferSize?: number, windowTime?: number, scheduler?: SchedulerLike): MonoTypeOperatorFunction<T>;\n\n/**\n * Share source and replay specified number of emissions on subscription.\n *\n * This operator is a specialization of `replay` that connects to a source observable\n * and multicasts through a `ReplaySubject` constructed with the specified arguments.\n * A successfully completed source will stay cached in the `shareReplay`ed observable forever,\n * but an errored source can be retried.\n *\n * ## Why use `shareReplay`?\n *\n * You generally want to use `shareReplay` when you have side-effects or taxing computations\n * that you do not wish to be executed amongst multiple subscribers.\n * It may also be valuable in situations where you know you will have late subscribers to\n * a stream that need access to previously emitted values.\n * This ability to replay values on subscription is what differentiates {@link share} and `shareReplay`.\n *\n * ## Reference counting\n *\n * By default `shareReplay` will use `refCount` of false, meaning that it will _not_ unsubscribe the\n * source when the reference counter drops to zero, i.e. the inner `ReplaySubject` will _not_ be unsubscribed\n * (and potentially run for ever).\n * This is the default as it is expected that `shareReplay` is often used to keep around expensive to setup\n * observables which we want to keep running instead of having to do the expensive setup again.\n *\n * As of RXJS version 6.4.0 a new overload signature was added to allow for manual control over what\n * happens when the operators internal reference counter drops to zero.\n * If `refCount` is true, the source will be unsubscribed from once the reference count drops to zero, i.e.\n * the inner `ReplaySubject` will be unsubscribed. All new subscribers will receive value emissions from a\n * new `ReplaySubject` which in turn will cause a new subscription to the source observable.\n *\n * ## Examples\n *\n * Example with a third subscriber coming late to the party\n *\n * ```ts\n * import { interval, take, shareReplay } from 'rxjs';\n *\n * const shared$ = interval(2000).pipe(\n * take(6),\n * shareReplay(3)\n * );\n *\n * shared$.subscribe(x => console.log('sub A: ', x));\n * shared$.subscribe(y => console.log('sub B: ', y));\n *\n * setTimeout(() => {\n * shared$.subscribe(y => console.log('sub C: ', y));\n * }, 11000);\n *\n * // Logs:\n * // (after ~2000 ms)\n * // sub A: 0\n * // sub B: 0\n * // (after ~4000 ms)\n * // sub A: 1\n * // sub B: 1\n * // (after ~6000 ms)\n * // sub A: 2\n * // sub B: 2\n * // (after ~8000 ms)\n * // sub A: 3\n * // sub B: 3\n * // (after ~10000 ms)\n * // sub A: 4\n * // sub B: 4\n * // (after ~11000 ms, sub C gets the last 3 values)\n * // sub C: 2\n * // sub C: 3\n * // sub C: 4\n * // (after ~12000 ms)\n * // sub A: 5\n * // sub B: 5\n * // sub C: 5\n * ```\n *\n * Example for `refCount` usage\n *\n * ```ts\n * import { Observable, tap, interval, shareReplay, take } from 'rxjs';\n *\n * const log = <T>(name: string, source: Observable<T>) => source.pipe(\n * tap({\n * subscribe: () => console.log(`${ name }: subscribed`),\n * next: value => console.log(`${ name }: ${ value }`),\n * complete: () => console.log(`${ name }: completed`),\n * finalize: () => console.log(`${ name }: unsubscribed`)\n * })\n * );\n *\n * const obs$ = log('source', interval(1000));\n *\n * const shared$ = log('shared', obs$.pipe(\n * shareReplay({ bufferSize: 1, refCount: true }),\n * take(2)\n * ));\n *\n * shared$.subscribe(x => console.log('sub A: ', x));\n * shared$.subscribe(y => console.log('sub B: ', y));\n *\n * // PRINTS:\n * // shared: subscribed <-- reference count = 1\n * // source: subscribed\n * // shared: subscribed <-- reference count = 2\n * // source: 0\n * // shared: 0\n * // sub A: 0\n * // shared: 0\n * // sub B: 0\n * // source: 1\n * // shared: 1\n * // sub A: 1\n * // shared: completed <-- take(2) completes the subscription for sub A\n * // shared: unsubscribed <-- reference count = 1\n * // shared: 1\n * // sub B: 1\n * // shared: completed <-- take(2) completes the subscription for sub B\n * // shared: unsubscribed <-- reference count = 0\n * // source: unsubscribed <-- replaySubject unsubscribes from source observable because the reference count dropped to 0 and refCount is true\n *\n * // In case of refCount being false, the unsubscribe is never called on the source and the source would keep on emitting, even if no subscribers\n * // are listening.\n * // source: 2\n * // source: 3\n * // source: 4\n * // ...\n * ```\n *\n * @see {@link publish}\n * @see {@link share}\n * @see {@link publishReplay}\n *\n * @param configOrBufferSize Maximum element count of the replay buffer or {@link ShareReplayConfig configuration}\n * object.\n * @param windowTime Maximum time length of the replay buffer in milliseconds.\n * @param scheduler Scheduler where connected observers within the selector function\n * will be invoked on.\n * @return A function that returns an Observable sequence that contains the\n * elements of a sequence produced by multicasting the source sequence within a\n * selector function.\n */\nexport function shareReplay<T>(\n configOrBufferSize?: ShareReplayConfig | number,\n windowTime?: number,\n scheduler?: SchedulerLike\n): MonoTypeOperatorFunction<T> {\n let bufferSize: number;\n let refCount = false;\n if (configOrBufferSize && typeof configOrBufferSize === 'object') {\n ({ bufferSize = Infinity, windowTime = Infinity, refCount = false, scheduler } = configOrBufferSize);\n } else {\n bufferSize = (configOrBufferSize ?? Infinity) as number;\n }\n return share<T>({\n connector: () => new ReplaySubject(bufferSize, windowTime, scheduler),\n resetOnError: true,\n resetOnComplete: false,\n resetOnRefCountZero: refCount,\n });\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { filter } from './filter';\n\n/**\n * Returns an Observable that skips the first `count` items emitted by the source Observable.\n *\n * \n *\n * Skips the values until the sent notifications are equal or less than provided skip count. It raises\n * an error if skip count is equal or more than the actual number of emits and source raises an error.\n *\n * ## Example\n *\n * Skip the values before the emission\n *\n * ```ts\n * import { interval, skip } from 'rxjs';\n *\n * // emit every half second\n * const source = interval(500);\n * // skip the first 10 emitted values\n * const result = source.pipe(skip(10));\n *\n * result.subscribe(value => console.log(value));\n * // output: 10...11...12...13...\n * ```\n *\n * @see {@link last}\n * @see {@link skipWhile}\n * @see {@link skipUntil}\n * @see {@link skipLast}\n *\n * @param {Number} count - The number of times, items emitted by source Observable should be skipped.\n * @return A function that returns an Observable that skips the first `count`\n * values emitted by the source Observable.\n */\nexport function skip<T>(count: number): MonoTypeOperatorFunction<T> {\n return filter((_, index) => count <= index);\n}\n", "import { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { noop } from '../util/noop';\n\n/**\n * Returns an Observable that skips items emitted by the source Observable until a second Observable emits an item.\n *\n * The `skipUntil` operator causes the observable stream to skip the emission of values until the passed in observable\n * emits the first value. This can be particularly useful in combination with user interactions, responses of HTTP\n * requests or waiting for specific times to pass by.\n *\n * \n *\n * Internally, the `skipUntil` operator subscribes to the passed in `notifier` `ObservableInput` (which gets converted\n * to an Observable) in order to recognize the emission of its first value. When `notifier` emits next, the operator\n * unsubscribes from it and starts emitting the values of the *source* observable until it completes or errors. It\n * will never let the *source* observable emit any values if the `notifier` completes or throws an error without\n * emitting a value before.\n *\n * ## Example\n *\n * In the following example, all emitted values of the interval observable are skipped until the user clicks anywhere\n * within the page\n *\n * ```ts\n * import { interval, fromEvent, skipUntil } from 'rxjs';\n *\n * const intervalObservable = interval(1000);\n * const click = fromEvent(document, 'click');\n *\n * const emitAfterClick = intervalObservable.pipe(\n * skipUntil(click)\n * );\n * // clicked at 4.6s. output: 5...6...7...8........ or\n * // clicked at 7.3s. output: 8...9...10..11.......\n * emitAfterClick.subscribe(value => console.log(value));\n * ```\n *\n * @see {@link last}\n * @see {@link skip}\n * @see {@link skipWhile}\n * @see {@link skipLast}\n *\n * @param notifier An `ObservableInput` that has to emit an item before the source Observable elements begin to\n * be mirrored by the resulting Observable.\n * @return A function that returns an Observable that skips items from the\n * source Observable until the `notifier` Observable emits an item, then emits the\n * remaining items.\n */\nexport function skipUntil<T>(notifier: ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let taking = false;\n\n const skipSubscriber = createOperatorSubscriber(\n subscriber,\n () => {\n skipSubscriber?.unsubscribe();\n taking = true;\n },\n noop\n );\n\n innerFrom(notifier).subscribe(skipSubscriber);\n\n source.subscribe(createOperatorSubscriber(subscriber, (value) => taking && subscriber.next(value)));\n });\n}\n", "import { concat } from '../observable/concat';\nimport { OperatorFunction, SchedulerLike, ValueFromArray } from '../types';\nimport { popScheduler } from '../util/args';\nimport { operate } from '../util/lift';\n\n// Devs are more likely to pass null or undefined than they are a scheduler\n// without accompanying values. To make things easier for (naughty) devs who\n// use the `strictNullChecks: false` TypeScript compiler option, these\n// overloads with explicit null and undefined values are included.\n\nexport function startWith<T>(value: null): OperatorFunction<T, T | null>;\nexport function startWith<T>(value: undefined): OperatorFunction<T, T | undefined>;\n\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `concatAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function startWith<T, A extends readonly unknown[] = T[]>(\n ...valuesAndScheduler: [...A, SchedulerLike]\n): OperatorFunction<T, T | ValueFromArray<A>>;\nexport function startWith<T, A extends readonly unknown[] = T[]>(...values: A): OperatorFunction<T, T | ValueFromArray<A>>;\n\n/**\n * Returns an observable that, at the moment of subscription, will synchronously emit all\n * values provided to this operator, then subscribe to the source and mirror all of its emissions\n * to subscribers.\n *\n * This is a useful way to know when subscription has occurred on an existing observable.\n *\n * <span class=\"informal\">First emits its arguments in order, and then any\n * emissions from the source.</span>\n *\n * \n *\n * ## Examples\n *\n * Emit a value when a timer starts.\n *\n * ```ts\n * import { timer, map, startWith } from 'rxjs';\n *\n * timer(1000)\n * .pipe(\n * map(() => 'timer emit'),\n * startWith('timer start')\n * )\n * .subscribe(x => console.log(x));\n *\n * // results:\n * // 'timer start'\n * // 'timer emit'\n * ```\n *\n * @param values Items you want the modified Observable to emit first.\n * @return A function that returns an Observable that synchronously emits\n * provided values before subscribing to the source Observable.\n *\n * @see {@link endWith}\n * @see {@link finalize}\n * @see {@link concat}\n */\nexport function startWith<T, D>(...values: D[]): OperatorFunction<T, T | D> {\n const scheduler = popScheduler(values);\n return operate((source, subscriber) => {\n // Here we can't pass `undefined` as a scheduler, because if we did, the\n // code inside of `concat` would be confused by the `undefined`, and treat it\n // like an invalid observable. So we have to split it two different ways.\n (scheduler ? concat(values, source, scheduler) : concat(values, source)).subscribe(subscriber);\n });\n}\n", "import { Subscriber } from '../Subscriber';\nimport { ObservableInput, OperatorFunction, ObservedValueOf } from '../types';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/* tslint:disable:max-line-length */\nexport function switchMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function switchMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: undefined\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function switchMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: (outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R\n): OperatorFunction<T, R>;\n/* tslint:enable:max-line-length */\n\n/**\n * Projects each source value to an Observable which is merged in the output\n * Observable, emitting values only from the most recently projected Observable.\n *\n * <span class=\"informal\">Maps each value to an Observable, then flattens all of\n * these inner Observables using {@link switchAll}.</span>\n *\n * \n *\n * Returns an Observable that emits items based on applying a function that you\n * supply to each item emitted by the source Observable, where that function\n * returns an (so-called \"inner\") Observable. Each time it observes one of these\n * inner Observables, the output Observable begins emitting the items emitted by\n * that inner Observable. When a new inner Observable is emitted, `switchMap`\n * stops emitting items from the earlier-emitted inner Observable and begins\n * emitting items from the new one. It continues to behave like this for\n * subsequent inner Observables.\n *\n * ## Example\n *\n * Generate new Observable according to source Observable values\n *\n * ```ts\n * import { of, switchMap } from 'rxjs';\n *\n * const switched = of(1, 2, 3).pipe(switchMap(x => of(x, x ** 2, x ** 3)));\n * switched.subscribe(x => console.log(x));\n * // outputs\n * // 1\n * // 1\n * // 1\n * // 2\n * // 4\n * // 8\n * // 3\n * // 9\n * // 27\n * ```\n *\n * Restart an interval Observable on every click event\n *\n * ```ts\n * import { fromEvent, switchMap, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(switchMap(() => interval(1000)));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link concatMap}\n * @see {@link exhaustMap}\n * @see {@link mergeMap}\n * @see {@link switchAll}\n * @see {@link switchMapTo}\n *\n * @param {function(value: T, index: number): ObservableInput} project A function\n * that, when applied to an item emitted by the source Observable, returns an\n * Observable.\n * @return A function that returns an Observable that emits the result of\n * applying the projection function (and the optional deprecated\n * `resultSelector`) to each item emitted by the source Observable and taking\n * only the values from the most recently projected inner Observable.\n */\nexport function switchMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector?: (outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R\n): OperatorFunction<T, ObservedValueOf<O> | R> {\n return operate((source, subscriber) => {\n let innerSubscriber: Subscriber<ObservedValueOf<O>> | null = null;\n let index = 0;\n // Whether or not the source subscription has completed\n let isComplete = false;\n\n // We only complete the result if the source is complete AND we don't have an active inner subscription.\n // This is called both when the source completes and when the inners complete.\n const checkComplete = () => isComplete && !innerSubscriber && subscriber.complete();\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // Cancel the previous inner subscription if there was one\n innerSubscriber?.unsubscribe();\n let innerIndex = 0;\n const outerIndex = index++;\n // Start the next inner subscription\n innerFrom(project(value, outerIndex)).subscribe(\n (innerSubscriber = createOperatorSubscriber(\n subscriber,\n // When we get a new inner value, next it through. Note that this is\n // handling the deprecate result selector here. This is because with this architecture\n // it ends up being smaller than using the map operator.\n (innerValue) => subscriber.next(resultSelector ? resultSelector(value, innerValue, outerIndex, innerIndex++) : innerValue),\n () => {\n // The inner has completed. Null out the inner subscriber to\n // free up memory and to signal that we have no inner subscription\n // currently.\n innerSubscriber = null!;\n checkComplete();\n }\n ))\n );\n },\n () => {\n isComplete = true;\n checkComplete();\n }\n )\n );\n });\n}\n", "import { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { noop } from '../util/noop';\n\n/**\n * Emits the values emitted by the source Observable until a `notifier`\n * Observable emits a value.\n *\n * <span class=\"informal\">Lets values pass until a second Observable,\n * `notifier`, emits a value. Then, it completes.</span>\n *\n * \n *\n * `takeUntil` subscribes and begins mirroring the source Observable. It also\n * monitors a second Observable, `notifier` that you provide. If the `notifier`\n * emits a value, the output Observable stops mirroring the source Observable\n * and completes. If the `notifier` doesn't emit any value and completes\n * then `takeUntil` will pass all values.\n *\n * ## Example\n *\n * Tick every second until the first click happens\n *\n * ```ts\n * import { interval, fromEvent, takeUntil } from 'rxjs';\n *\n * const source = interval(1000);\n * const clicks = fromEvent(document, 'click');\n * const result = source.pipe(takeUntil(clicks));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link take}\n * @see {@link takeLast}\n * @see {@link takeWhile}\n * @see {@link skip}\n *\n * @param {Observable} notifier The Observable whose first emitted value will\n * cause the output Observable of `takeUntil` to stop emitting values from the\n * source Observable.\n * @return A function that returns an Observable that emits the values from the\n * source Observable until `notifier` emits its first value.\n */\nexport function takeUntil<T>(notifier: ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n innerFrom(notifier).subscribe(createOperatorSubscriber(subscriber, () => subscriber.complete(), noop));\n !subscriber.closed && source.subscribe(subscriber);\n });\n}\n", "import { OperatorFunction, MonoTypeOperatorFunction, TruthyTypesOf } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\nexport function takeWhile<T>(predicate: BooleanConstructor, inclusive: true): MonoTypeOperatorFunction<T>;\nexport function takeWhile<T>(predicate: BooleanConstructor, inclusive: false): OperatorFunction<T, TruthyTypesOf<T>>;\nexport function takeWhile<T>(predicate: BooleanConstructor): OperatorFunction<T, TruthyTypesOf<T>>;\nexport function takeWhile<T, S extends T>(predicate: (value: T, index: number) => value is S): OperatorFunction<T, S>;\nexport function takeWhile<T, S extends T>(predicate: (value: T, index: number) => value is S, inclusive: false): OperatorFunction<T, S>;\nexport function takeWhile<T>(predicate: (value: T, index: number) => boolean, inclusive?: boolean): MonoTypeOperatorFunction<T>;\n\n/**\n * Emits values emitted by the source Observable so long as each value satisfies\n * the given `predicate`, and then completes as soon as this `predicate` is not\n * satisfied.\n *\n * <span class=\"informal\">Takes values from the source only while they pass the\n * condition given. When the first value does not satisfy, it completes.</span>\n *\n * \n *\n * `takeWhile` subscribes and begins mirroring the source Observable. Each value\n * emitted on the source is given to the `predicate` function which returns a\n * boolean, representing a condition to be satisfied by the source values. The\n * output Observable emits the source values until such time as the `predicate`\n * returns false, at which point `takeWhile` stops mirroring the source\n * Observable and completes the output Observable.\n *\n * ## Example\n *\n * Emit click events only while the clientX property is greater than 200\n *\n * ```ts\n * import { fromEvent, takeWhile } from 'rxjs';\n *\n * const clicks = fromEvent<PointerEvent>(document, 'click');\n * const result = clicks.pipe(takeWhile(ev => ev.clientX > 200));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link take}\n * @see {@link takeLast}\n * @see {@link takeUntil}\n * @see {@link skip}\n *\n * @param {function(value: T, index: number): boolean} predicate A function that\n * evaluates a value emitted by the source Observable and returns a boolean.\n * Also takes the (zero-based) index as the second argument.\n * @param {boolean} inclusive When set to `true` the value that caused\n * `predicate` to return `false` will also be emitted.\n * @return A function that returns an Observable that emits values from the\n * source Observable so long as each value satisfies the condition defined by\n * the `predicate`, then completes.\n */\nexport function takeWhile<T>(predicate: (value: T, index: number) => boolean, inclusive = false): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let index = 0;\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n const result = predicate(value, index++);\n (result || inclusive) && subscriber.next(value);\n !result && subscriber.complete();\n })\n );\n });\n}\n", "import { MonoTypeOperatorFunction, Observer } from '../types';\nimport { isFunction } from '../util/isFunction';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { identity } from '../util/identity';\n\n/**\n * An extension to the {@link Observer} interface used only by the {@link tap} operator.\n *\n * It provides a useful set of callbacks a user can register to do side-effects in\n * cases other than what the usual {@link Observer} callbacks are\n * ({@link guide/glossary-and-semantics#next next},\n * {@link guide/glossary-and-semantics#error error} and/or\n * {@link guide/glossary-and-semantics#complete complete}).\n *\n * ## Example\n *\n * ```ts\n * import { fromEvent, switchMap, tap, interval, take } from 'rxjs';\n *\n * const source$ = fromEvent(document, 'click');\n * const result$ = source$.pipe(\n * switchMap((_, i) => i % 2 === 0\n * ? fromEvent(document, 'mousemove').pipe(\n * tap({\n * subscribe: () => console.log('Subscribed to the mouse move events after click #' + i),\n * unsubscribe: () => console.log('Mouse move events #' + i + ' unsubscribed'),\n * finalize: () => console.log('Mouse move events #' + i + ' finalized')\n * })\n * )\n * : interval(1_000).pipe(\n * take(5),\n * tap({\n * subscribe: () => console.log('Subscribed to the 1-second interval events after click #' + i),\n * unsubscribe: () => console.log('1-second interval events #' + i + ' unsubscribed'),\n * finalize: () => console.log('1-second interval events #' + i + ' finalized')\n * })\n * )\n * )\n * );\n *\n * const subscription = result$.subscribe({\n * next: console.log\n * });\n *\n * setTimeout(() => {\n * console.log('Unsubscribe after 60 seconds');\n * subscription.unsubscribe();\n * }, 60_000);\n * ```\n */\nexport interface TapObserver<T> extends Observer<T> {\n /**\n * The callback that `tap` operator invokes at the moment when the source Observable\n * gets subscribed to.\n */\n subscribe: () => void;\n /**\n * The callback that `tap` operator invokes when an explicit\n * {@link guide/glossary-and-semantics#unsubscription unsubscribe} happens. It won't get invoked on\n * `error` or `complete` events.\n */\n unsubscribe: () => void;\n /**\n * The callback that `tap` operator invokes when any kind of\n * {@link guide/glossary-and-semantics#finalization finalization} happens - either when\n * the source Observable `error`s or `complete`s or when it gets explicitly unsubscribed\n * by the user. There is no difference in using this callback or the {@link finalize}\n * operator, but if you're already using `tap` operator, you can use this callback\n * instead. You'd get the same result in either case.\n */\n finalize: () => void;\n}\nexport function tap<T>(observerOrNext?: Partial<TapObserver<T>> | ((value: T) => void)): MonoTypeOperatorFunction<T>;\n/** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\nexport function tap<T>(\n next?: ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n): MonoTypeOperatorFunction<T>;\n\n/**\n * Used to perform side-effects for notifications from the source observable\n *\n * <span class=\"informal\">Used when you want to affect outside state with a notification without altering the notification</span>\n *\n * \n *\n * Tap is designed to allow the developer a designated place to perform side effects. While you _could_ perform side-effects\n * inside of a `map` or a `mergeMap`, that would make their mapping functions impure, which isn't always a big deal, but will\n * make it so you can't do things like memoize those functions. The `tap` operator is designed solely for such side-effects to\n * help you remove side-effects from other operations.\n *\n * For any notification, next, error, or complete, `tap` will call the appropriate callback you have provided to it, via a function\n * reference, or a partial observer, then pass that notification down the stream.\n *\n * The observable returned by `tap` is an exact mirror of the source, with one exception: Any error that occurs -- synchronously -- in a handler\n * provided to `tap` will be emitted as an error from the returned observable.\n *\n * > Be careful! You can mutate objects as they pass through the `tap` operator's handlers.\n *\n * The most common use of `tap` is actually for debugging. You can place a `tap(console.log)` anywhere\n * in your observable `pipe`, log out the notifications as they are emitted by the source returned by the previous\n * operation.\n *\n * ## Examples\n *\n * Check a random number before it is handled. Below is an observable that will use a random number between 0 and 1,\n * and emit `'big'` or `'small'` depending on the size of that number. But we wanted to log what the original number\n * was, so we have added a `tap(console.log)`.\n *\n * ```ts\n * import { of, tap, map } from 'rxjs';\n *\n * of(Math.random()).pipe(\n * tap(console.log),\n * map(n => n > 0.5 ? 'big' : 'small')\n * ).subscribe(console.log);\n * ```\n *\n * Using `tap` to analyze a value and force an error. Below is an observable where in our system we only\n * want to emit numbers 3 or less we get from another source. We can force our observable to error\n * using `tap`.\n *\n * ```ts\n * import { of, tap } from 'rxjs';\n *\n * const source = of(1, 2, 3, 4, 5);\n *\n * source.pipe(\n * tap(n => {\n * if (n > 3) {\n * throw new TypeError(`Value ${ n } is greater than 3`);\n * }\n * })\n * )\n * .subscribe({ next: console.log, error: err => console.log(err.message) });\n * ```\n *\n * We want to know when an observable completes before moving on to the next observable. The system\n * below will emit a random series of `'X'` characters from 3 different observables in sequence. The\n * only way we know when one observable completes and moves to the next one, in this case, is because\n * we have added a `tap` with the side effect of logging to console.\n *\n * ```ts\n * import { of, concatMap, interval, take, map, tap } from 'rxjs';\n *\n * of(1, 2, 3).pipe(\n * concatMap(n => interval(1000).pipe(\n * take(Math.round(Math.random() * 10)),\n * map(() => 'X'),\n * tap({ complete: () => console.log(`Done with ${ n }`) })\n * ))\n * )\n * .subscribe(console.log);\n * ```\n *\n * @see {@link finalize}\n * @see {@link TapObserver}\n *\n * @param observerOrNext A next handler or partial observer\n * @param error An error handler\n * @param complete A completion handler\n * @return A function that returns an Observable identical to the source, but\n * runs the specified Observer or callback(s) for each item.\n */\nexport function tap<T>(\n observerOrNext?: Partial<TapObserver<T>> | ((value: T) => void) | null,\n error?: ((e: any) => void) | null,\n complete?: (() => void) | null\n): MonoTypeOperatorFunction<T> {\n // We have to check to see not only if next is a function,\n // but if error or complete were passed. This is because someone\n // could technically call tap like `tap(null, fn)` or `tap(null, null, fn)`.\n const tapObserver =\n isFunction(observerOrNext) || error || complete\n ? // tslint:disable-next-line: no-object-literal-type-assertion\n ({ next: observerOrNext as Exclude<typeof observerOrNext, Partial<TapObserver<T>>>, error, complete } as Partial<TapObserver<T>>)\n : observerOrNext;\n\n return tapObserver\n ? operate((source, subscriber) => {\n tapObserver.subscribe?.();\n let isUnsub = true;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n tapObserver.next?.(value);\n subscriber.next(value);\n },\n () => {\n isUnsub = false;\n tapObserver.complete?.();\n subscriber.complete();\n },\n (err) => {\n isUnsub = false;\n tapObserver.error?.(err);\n subscriber.error(err);\n },\n () => {\n if (isUnsub) {\n tapObserver.unsubscribe?.();\n }\n tapObserver.finalize?.();\n }\n )\n );\n })\n : // Tap was called with no valid tap observer or handler\n // (e.g. `tap(null, null, null)` or `tap(null)` or `tap()`)\n // so we're going to just mirror the source.\n identity;\n}\n", "import { Subscription } from '../Subscription';\n\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\n\n/**\n * An object interface used by {@link throttle} or {@link throttleTime} that ensure\n * configuration options of these operators.\n *\n * @see {@link throttle}\n * @see {@link throttleTime}\n */\nexport interface ThrottleConfig {\n /**\n * If `true`, the resulting Observable will emit the first value from the source\n * Observable at the **start** of the \"throttling\" process (when starting an\n * internal timer that prevents other emissions from the source to pass through).\n * If `false`, it will not emit the first value from the source Observable at the\n * start of the \"throttling\" process.\n *\n * If not provided, defaults to: `true`.\n */\n leading?: boolean;\n /**\n * If `true`, the resulting Observable will emit the last value from the source\n * Observable at the **end** of the \"throttling\" process (when ending an internal\n * timer that prevents other emissions from the source to pass through).\n * If `false`, it will not emit the last value from the source Observable at the\n * end of the \"throttling\" process.\n *\n * If not provided, defaults to: `false`.\n */\n trailing?: boolean;\n}\n\n/**\n * Emits a value from the source Observable, then ignores subsequent source\n * values for a duration determined by another Observable, then repeats this\n * process.\n *\n * <span class=\"informal\">It's like {@link throttleTime}, but the silencing\n * duration is determined by a second Observable.</span>\n *\n * \n *\n * `throttle` emits the source Observable values on the output Observable\n * when its internal timer is disabled, and ignores source values when the timer\n * is enabled. Initially, the timer is disabled. As soon as the first source\n * value arrives, it is forwarded to the output Observable, and then the timer\n * is enabled by calling the `durationSelector` function with the source value,\n * which returns the \"duration\" Observable. When the duration Observable emits a\n * value, the timer is disabled, and this process repeats for the\n * next source value.\n *\n * ## Example\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, throttle, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(throttle(() => interval(1000)));\n *\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link debounce}\n * @see {@link delayWhen}\n * @see {@link sample}\n * @see {@link throttleTime}\n *\n * @param durationSelector A function that receives a value from the source\n * Observable, for computing the silencing duration for each source value,\n * returned as an `ObservableInput`.\n * @param config A configuration object to define `leading` and `trailing`\n * behavior. Defaults to `{ leading: true, trailing: false }`.\n * @return A function that returns an Observable that performs the throttle\n * operation to limit the rate of emissions from the source.\n */\nexport function throttle<T>(durationSelector: (value: T) => ObservableInput<any>, config?: ThrottleConfig): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n const { leading = true, trailing = false } = config ?? {};\n let hasValue = false;\n let sendValue: T | null = null;\n let throttled: Subscription | null = null;\n let isComplete = false;\n\n const endThrottling = () => {\n throttled?.unsubscribe();\n throttled = null;\n if (trailing) {\n send();\n isComplete && subscriber.complete();\n }\n };\n\n const cleanupThrottling = () => {\n throttled = null;\n isComplete && subscriber.complete();\n };\n\n const startThrottle = (value: T) =>\n (throttled = innerFrom(durationSelector(value)).subscribe(createOperatorSubscriber(subscriber, endThrottling, cleanupThrottling)));\n\n const send = () => {\n if (hasValue) {\n // Ensure we clear out our value and hasValue flag\n // before we emit, otherwise reentrant code can cause\n // issues here.\n hasValue = false;\n const value = sendValue!;\n sendValue = null;\n // Emit the value.\n subscriber.next(value);\n !isComplete && startThrottle(value);\n }\n };\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n // Regarding the presence of throttled.closed in the following\n // conditions, if a synchronous duration selector is specified - weird,\n // but legal - an already-closed subscription will be assigned to\n // throttled, so the subscription's closed property needs to be checked,\n // too.\n (value) => {\n hasValue = true;\n sendValue = value;\n !(throttled && !throttled.closed) && (leading ? send() : startThrottle(value));\n },\n () => {\n isComplete = true;\n !(trailing && hasValue && throttled && !throttled.closed) && subscriber.complete();\n }\n )\n );\n });\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { throttle, ThrottleConfig } from './throttle';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { timer } from '../observable/timer';\n\n/**\n * Emits a value from the source Observable, then ignores subsequent source\n * values for `duration` milliseconds, then repeats this process.\n *\n * <span class=\"informal\">Lets a value pass, then ignores source values for the\n * next `duration` milliseconds.</span>\n *\n * \n *\n * `throttleTime` emits the source Observable values on the output Observable\n * when its internal timer is disabled, and ignores source values when the timer\n * is enabled. Initially, the timer is disabled. As soon as the first source\n * value arrives, it is forwarded to the output Observable, and then the timer\n * is enabled. After `duration` milliseconds (or the time unit determined\n * internally by the optional `scheduler`) has passed, the timer is disabled,\n * and this process repeats for the next source value. Optionally takes a\n * {@link SchedulerLike} for managing timers.\n *\n * ## Examples\n *\n * ### Limit click rate\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, throttleTime } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(throttleTime(1000));\n *\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link auditTime}\n * @see {@link debounceTime}\n * @see {@link delay}\n * @see {@link sampleTime}\n * @see {@link throttle}\n *\n * @param duration Time to wait before emitting another value after\n * emitting the last value, measured in milliseconds or the time unit determined\n * internally by the optional `scheduler`.\n * @param scheduler The {@link SchedulerLike} to use for\n * managing the timers that handle the throttling. Defaults to {@link asyncScheduler}.\n * @param config A configuration object to define `leading` and\n * `trailing` behavior. Defaults to `{ leading: true, trailing: false }`.\n * @return A function that returns an Observable that performs the throttle\n * operation to limit the rate of emissions from the source.\n */\nexport function throttleTime<T>(\n duration: number,\n scheduler: SchedulerLike = asyncScheduler,\n config?: ThrottleConfig\n): MonoTypeOperatorFunction<T> {\n const duration$ = timer(duration, scheduler);\n return throttle(() => duration$, config);\n}\n", "import { OperatorFunction, ObservableInputTuple } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { identity } from '../util/identity';\nimport { noop } from '../util/noop';\nimport { popResultSelector } from '../util/args';\n\nexport function withLatestFrom<T, O extends unknown[]>(...inputs: [...ObservableInputTuple<O>]): OperatorFunction<T, [T, ...O]>;\n\nexport function withLatestFrom<T, O extends unknown[], R>(\n ...inputs: [...ObservableInputTuple<O>, (...value: [T, ...O]) => R]\n): OperatorFunction<T, R>;\n\n/**\n * Combines the source Observable with other Observables to create an Observable\n * whose values are calculated from the latest values of each, only when the\n * source emits.\n *\n * <span class=\"informal\">Whenever the source Observable emits a value, it\n * computes a formula using that value plus the latest values from other input\n * Observables, then emits the output of that formula.</span>\n *\n * \n *\n * `withLatestFrom` combines each value from the source Observable (the\n * instance) with the latest values from the other input Observables only when\n * the source emits a value, optionally using a `project` function to determine\n * the value to be emitted on the output Observable. All input Observables must\n * emit at least one value before the output Observable will emit a value.\n *\n * ## Example\n *\n * On every click event, emit an array with the latest timer event plus the click event\n *\n * ```ts\n * import { fromEvent, interval, withLatestFrom } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const timer = interval(1000);\n * const result = clicks.pipe(withLatestFrom(timer));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link combineLatest}\n *\n * @param {ObservableInput} other An input Observable to combine with the source\n * Observable. More than one input Observables may be given as argument.\n * @param {Function} [project] Projection function for combining values\n * together. Receives all values in order of the Observables passed, where the\n * first parameter is a value from the source Observable. (e.g.\n * `a.pipe(withLatestFrom(b, c), map(([a1, b1, c1]) => a1 + b1 + c1))`). If this is not\n * passed, arrays will be emitted on the output Observable.\n * @return A function that returns an Observable of projected values from the\n * most recent values from each input Observable, or an array of the most\n * recent values from each input Observable.\n */\nexport function withLatestFrom<T, R>(...inputs: any[]): OperatorFunction<T, R | any[]> {\n const project = popResultSelector(inputs) as ((...args: any[]) => R) | undefined;\n\n return operate((source, subscriber) => {\n const len = inputs.length;\n const otherValues = new Array(len);\n // An array of whether or not the other sources have emitted. Matched with them by index.\n // TODO: At somepoint, we should investigate the performance implications here, and look\n // into using a `Set()` and checking the `size` to see if we're ready.\n let hasValue = inputs.map(() => false);\n // Flipped true when we have at least one value from all other sources and\n // we are ready to start emitting values.\n let ready = false;\n\n // Other sources. Note that here we are not checking `subscriber.closed`,\n // this causes all inputs to be subscribed to, even if nothing can be emitted\n // from them. This is an important distinction because subscription constitutes\n // a side-effect.\n for (let i = 0; i < len; i++) {\n innerFrom(inputs[i]).subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n otherValues[i] = value;\n if (!ready && !hasValue[i]) {\n // If we're not ready yet, flag to show this observable has emitted.\n hasValue[i] = true;\n // Intentionally terse code.\n // If all of our other observables have emitted, set `ready` to `true`,\n // so we know we can start emitting values, then clean up the `hasValue` array,\n // because we don't need it anymore.\n (ready = hasValue.every(identity)) && (hasValue = null!);\n }\n },\n // Completing one of the other sources has\n // no bearing on the completion of our result.\n noop\n )\n );\n }\n\n // Source subscription\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n if (ready) {\n // We have at least one value from the other sources. Go ahead and emit.\n const values = [value, ...otherValues];\n subscriber.next(project ? project(...values) : values);\n }\n })\n );\n });\n}\n", "import { zip as zipStatic } from '../observable/zip';\nimport { ObservableInput, ObservableInputTuple, OperatorFunction, Cons } from '../types';\nimport { operate } from '../util/lift';\n\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[]>(otherInputs: [...ObservableInputTuple<A>]): OperatorFunction<T, Cons<T, A>>;\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[], R>(\n otherInputsAndProject: [...ObservableInputTuple<A>],\n project: (...values: Cons<T, A>) => R\n): OperatorFunction<T, R>;\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[]>(...otherInputs: [...ObservableInputTuple<A>]): OperatorFunction<T, Cons<T, A>>;\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[], R>(\n ...otherInputsAndProject: [...ObservableInputTuple<A>, (...values: Cons<T, A>) => R]\n): OperatorFunction<T, R>;\n\n/**\n * @deprecated Replaced with {@link zipWith}. Will be removed in v8.\n */\nexport function zip<T, R>(...sources: Array<ObservableInput<any> | ((...values: Array<any>) => R)>): OperatorFunction<T, any> {\n return operate((source, subscriber) => {\n zipStatic(source as ObservableInput<any>, ...(sources as Array<ObservableInput<any>>)).subscribe(subscriber);\n });\n}\n", "import { ObservableInputTuple, OperatorFunction, Cons } from '../types';\nimport { zip } from './zip';\n\n/**\n * Subscribes to the source, and the observable inputs provided as arguments, and combines their values, by index, into arrays.\n *\n * What is meant by \"combine by index\": The first value from each will be made into a single array, then emitted,\n * then the second value from each will be combined into a single array and emitted, then the third value\n * from each will be combined into a single array and emitted, and so on.\n *\n * This will continue until it is no longer able to combine values of the same index into an array.\n *\n * After the last value from any one completed source is emitted in an array, the resulting observable will complete,\n * as there is no way to continue \"zipping\" values together by index.\n *\n * Use-cases for this operator are limited. There are memory concerns if one of the streams is emitting\n * values at a much faster rate than the others. Usage should likely be limited to streams that emit\n * at a similar pace, or finite streams of known length.\n *\n * In many cases, authors want `combineLatestWith` and not `zipWith`.\n *\n * @param otherInputs other observable inputs to collate values from.\n * @return A function that returns an Observable that emits items by index\n * combined from the source Observable and provided Observables, in form of an\n * array.\n */\nexport function zipWith<T, A extends readonly unknown[]>(...otherInputs: [...ObservableInputTuple<A>]): OperatorFunction<T, Cons<T, A>> {\n return zip(...otherInputs);\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n ReplaySubject,\n Subject,\n fromEvent\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch document\n *\n * Documents are implemented as subjects, so all downstream observables are\n * automatically updated when a new document is emitted.\n *\n * @returns Document subject\n */\nexport function watchDocument(): Subject<Document> {\n const document$ = new ReplaySubject<Document>(1)\n fromEvent(document, \"DOMContentLoaded\", { once: true })\n .subscribe(() => document$.next(document))\n\n /* Return document */\n return document$\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve all elements matching the query selector\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Elements\n */\nexport function getElements<T extends keyof HTMLElementTagNameMap>(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T][]\n\nexport function getElements<T extends HTMLElement>(\n selector: string, node?: ParentNode\n): T[]\n\nexport function getElements<T extends HTMLElement>(\n selector: string, node: ParentNode = document\n): T[] {\n return Array.from(node.querySelectorAll<T>(selector))\n}\n\n/**\n * Retrieve an element matching a query selector or throw a reference error\n *\n * Note that this function assumes that the element is present. If unsure if an\n * element is existent, use the `getOptionalElement` function instead.\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Element\n */\nexport function getElement<T extends keyof HTMLElementTagNameMap>(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T]\n\nexport function getElement<T extends HTMLElement>(\n selector: string, node?: ParentNode\n): T\n\nexport function getElement<T extends HTMLElement>(\n selector: string, node: ParentNode = document\n): T {\n const el = getOptionalElement<T>(selector, node)\n if (typeof el === \"undefined\")\n throw new ReferenceError(\n `Missing element: expected \"${selector}\" to be present`\n )\n\n /* Return element */\n return el\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Retrieve an optional element matching the query selector\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Element or nothing\n */\nexport function getOptionalElement<T extends keyof HTMLElementTagNameMap>(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T] | undefined\n\nexport function getOptionalElement<T extends HTMLElement>(\n selector: string, node?: ParentNode\n): T | undefined\n\nexport function getOptionalElement<T extends HTMLElement>(\n selector: string, node: ParentNode = document\n): T | undefined {\n return node.querySelector<T>(selector) || undefined\n}\n\n/**\n * Retrieve the currently active element\n *\n * @returns Element or nothing\n */\nexport function getActiveElement(): HTMLElement | undefined {\n return (\n document.activeElement?.shadowRoot?.activeElement as HTMLElement ??\n document.activeElement as HTMLElement ??\n undefined\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n debounceTime,\n distinctUntilChanged,\n fromEvent,\n map,\n merge,\n shareReplay,\n startWith\n} from \"rxjs\"\n\nimport { getActiveElement } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Focus observable\n *\n * Previously, this observer used `focus` and `blur` events to determine whether\n * an element is focused, but this doesn't work if there are focusable elements\n * within the elements itself. A better solutions are `focusin` and `focusout`\n * events, which bubble up the tree and allow for more fine-grained control.\n *\n * `debounceTime` is necessary, because when a focus change happens inside an\n * element, the observable would first emit `false` and then `true` again.\n */\nconst observer$ = merge(\n fromEvent(document.body, \"focusin\"),\n fromEvent(document.body, \"focusout\")\n)\n .pipe(\n debounceTime(1),\n startWith(undefined),\n map(() => getActiveElement() || document.body),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element focus\n *\n * @param el - Element\n *\n * @returns Element focus observable\n */\nexport function watchElementFocus(\n el: HTMLElement\n): Observable<boolean> {\n return observer$\n .pipe(\n map(active => el.contains(active)),\n distinctUntilChanged()\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n debounce,\n defer,\n fromEvent,\n identity,\n map,\n merge,\n startWith,\n timer\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element hover\n *\n * The second parameter allows to specify a timeout in milliseconds after which\n * the hover state will be reset to `false`. This is useful for tooltips which\n * should disappear after a certain amount of time, in order to allow the user\n * to move the cursor from the host to the tooltip.\n *\n * @param el - Element\n * @param timeout - Timeout\n *\n * @returns Element hover observable\n */\nexport function watchElementHover(\n el: HTMLElement, timeout?: number\n): Observable<boolean> {\n return defer(() => merge(\n fromEvent(el, \"mouseenter\").pipe(map(() => true)),\n fromEvent(el, \"mouseleave\").pipe(map(() => false))\n )\n .pipe(\n timeout ? debounce(active => timer(+!active * timeout)) : identity,\n startWith(el.matches(\":hover\"))\n )\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { JSX as JSXInternal } from \"preact\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * HTML attributes\n */\ntype Attributes =\n & JSXInternal.HTMLAttributes\n & JSXInternal.SVGAttributes\n & Record<string, any>\n\n/**\n * Child element\n */\ntype Child =\n | ChildNode\n | HTMLElement\n | Text\n | string\n | number\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Append a child node to an element\n *\n * @param el - Element\n * @param child - Child node(s)\n */\nfunction appendChild(el: HTMLElement, child: Child | Child[]): void {\n\n /* Handle primitive types (including raw HTML) */\n if (typeof child === \"string\" || typeof child === \"number\") {\n el.innerHTML += child.toString()\n\n /* Handle nodes */\n } else if (child instanceof Node) {\n el.appendChild(child)\n\n /* Handle nested children */\n } else if (Array.isArray(child)) {\n for (const node of child)\n appendChild(el, node)\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * JSX factory\n *\n * @template T - Element type\n *\n * @param tag - HTML tag\n * @param attributes - HTML attributes\n * @param children - Child elements\n *\n * @returns Element\n */\nexport function h<T extends keyof HTMLElementTagNameMap>(\n tag: T, attributes?: Attributes | null, ...children: Child[]\n): HTMLElementTagNameMap[T]\n\nexport function h<T extends h.JSX.Element>(\n tag: string, attributes?: Attributes | null, ...children: Child[]\n): T\n\nexport function h<T extends h.JSX.Element>(\n tag: string, attributes?: Attributes | null, ...children: Child[]\n): T {\n const el = document.createElement(tag)\n\n /* Set attributes, if any */\n if (attributes)\n for (const attr of Object.keys(attributes)) {\n if (typeof attributes[attr] === \"undefined\")\n continue\n\n /* Set default attribute or boolean */\n if (typeof attributes[attr] !== \"boolean\")\n el.setAttribute(attr, attributes[attr])\n else\n el.setAttribute(attr, \"\")\n }\n\n /* Append child nodes */\n for (const child of children)\n appendChild(el, child)\n\n /* Return element */\n return el as T\n}\n\n/* ----------------------------------------------------------------------------\n * Namespace\n * ------------------------------------------------------------------------- */\n\nexport declare namespace h {\n namespace JSX {\n type Element = HTMLElement\n type IntrinsicElements = JSXInternal.IntrinsicElements\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Round a number for display with repository facts\n *\n * This is a reverse-engineered version of GitHub's weird rounding algorithm\n * for stars, forks and all other numbers. While all numbers below `1,000` are\n * returned as-is, bigger numbers are converted to fixed numbers:\n *\n * - `1,049` => `1k`\n * - `1,050` => `1.1k`\n * - `1,949` => `1.9k`\n * - `1,950` => `2k`\n *\n * @param value - Original value\n *\n * @returns Rounded value\n */\nexport function round(value: number): string {\n if (value > 999) {\n const digits = +((value - 950) % 1000 > 99)\n return `${((value + 0.000001) / 1000).toFixed(digits)}k`\n } else {\n return value.toString()\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n defer,\n finalize,\n fromEvent,\n map,\n merge,\n switchMap,\n take,\n throwError\n} from \"rxjs\"\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create and load a `script` element\n *\n * This function returns an observable that will emit when the script was\n * successfully loaded, or throw an error if it wasn't.\n *\n * @param src - Script URL\n *\n * @returns Script observable\n */\nexport function watchScript(src: string): Observable<void> {\n const script = h(\"script\", { src })\n return defer(() => {\n document.head.appendChild(script)\n return merge(\n fromEvent(script, \"load\"),\n fromEvent(script, \"error\")\n .pipe(\n switchMap(() => (\n throwError(() => new ReferenceError(`Invalid script: ${src}`))\n ))\n )\n )\n .pipe(\n map(() => undefined),\n finalize(() => document.head.removeChild(script)),\n take(1)\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n Subject,\n defer,\n filter,\n finalize,\n map,\n merge,\n of,\n shareReplay,\n startWith,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { watchScript } from \"../../../script\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Element offset\n */\nexport interface ElementSize {\n width: number /* Element width */\n height: number /* Element height */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Resize observer entry subject\n */\nconst entry$ = new Subject<ResizeObserverEntry>()\n\n/**\n * Resize observer observable\n *\n * This observable will create a `ResizeObserver` on the first subscription\n * and will automatically terminate it when there are no more subscribers.\n * It's quite important to centralize observation in a single `ResizeObserver`,\n * as the performance difference can be quite dramatic, as the link shows.\n *\n * If the browser doesn't have a `ResizeObserver` implementation available, a\n * polyfill is automatically downloaded from unpkg.com. This is also compatible\n * with the built-in privacy plugin, which will download the polyfill and put\n * it alongside the built site for self-hosting.\n *\n * @see https://bit.ly/3iIYfEm - Google Groups on performance\n */\nconst observer$ = defer(() => (\n typeof ResizeObserver === \"undefined\"\n ? watchScript(\"https://unpkg.com/resize-observer-polyfill\")\n : of(undefined)\n))\n .pipe(\n map(() => new ResizeObserver(entries => (\n entries.forEach(entry => entry$.next(entry))\n ))),\n switchMap(observer => merge(NEVER, of(observer)).pipe(\n finalize(() => observer.disconnect())\n )),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element size\n *\n * @param el - Element\n *\n * @returns Element size\n */\nexport function getElementSize(\n el: HTMLElement\n): ElementSize {\n return {\n width: el.offsetWidth,\n height: el.offsetHeight\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element size\n *\n * This function returns an observable that subscribes to a single internal\n * instance of `ResizeObserver` upon subscription, and emit resize events until\n * termination. Note that this function should not be called with the same\n * element twice, as the first unsubscription will terminate observation.\n *\n * Sadly, we can't use the `DOMRect` objects returned by the observer, because\n * we need the emitted values to be consistent with `getElementSize`, which will\n * return the used values (rounded) and not actual values (unrounded). Thus, we\n * use the `offset*` properties. See the linked GitHub issue.\n *\n * @see https://bit.ly/3m0k3he - GitHub issue\n *\n * @param el - Element\n *\n * @returns Element size observable\n */\nexport function watchElementSize(\n el: HTMLElement\n): Observable<ElementSize> {\n\n // Compute target element - since inline elements cannot be observed by the\n // current `ResizeObserver` implementation as provided by browsers, we need\n // to determine the first containing parent element and use that one as a\n // target, while we always compute the actual size from the element.\n let target = el\n while (target.clientWidth === 0)\n if (target.parentElement)\n target = target.parentElement\n else\n break\n\n // Observe target element and recompute element size on resize - as described\n // above, the target element is not necessarily the element of interest\n return observer$.pipe(\n tap(observer => observer.observe(target)),\n switchMap(observer => entry$.pipe(\n filter(entry => entry.target === target),\n finalize(() => observer.unobserve(target))\n )),\n map(() => getElementSize(el)),\n startWith(getElementSize(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ElementSize } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element content size (= scroll width and height)\n *\n * @param el - Element\n *\n * @returns Element content size\n */\nexport function getElementContentSize(\n el: HTMLElement\n): ElementSize {\n return {\n width: el.scrollWidth,\n height: el.scrollHeight\n }\n}\n\n/**\n * Retrieve the overflowing container of an element, if any\n *\n * @param el - Element\n *\n * @returns Overflowing container or nothing\n */\nexport function getElementContainer(\n el: HTMLElement\n): HTMLElement | undefined {\n let parent = el.parentElement\n while (parent)\n if (\n el.scrollWidth <= parent.scrollWidth &&\n el.scrollHeight <= parent.scrollHeight\n )\n parent = (el = parent).parentElement\n else\n break\n\n /* Return overflowing container */\n return parent ? el : undefined\n}\n\n/**\n * Retrieve all overflowing containers of an element, if any\n *\n * Note that this function has a slightly different behavior, so we should at\n * some point consider refactoring how overflowing containers are handled.\n *\n * @param el - Element\n *\n * @returns Overflowing containers\n */\nexport function getElementContainers(\n el: HTMLElement\n): HTMLElement[] {\n const containers: HTMLElement[] = []\n\n // Walk up the DOM tree until we find an overflowing container\n let parent = el.parentElement\n while (parent) {\n if (\n el.clientWidth > parent.clientWidth ||\n el.clientHeight > parent.clientHeight\n )\n containers.push(parent)\n\n // Continue with parent element\n parent = (el = parent).parentElement\n }\n\n // If the page is short, the body might not be overflowing and there might be\n // no other containers, which is why we need to make sure the body is present\n if (containers.length === 0)\n containers.push(document.documentElement)\n\n // Return overflowing containers\n return containers\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n animationFrameScheduler,\n auditTime,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\nimport { watchElementSize } from \"../../size\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Element offset\n */\nexport interface ElementOffset {\n x: number /* Horizontal offset */\n y: number /* Vertical offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element offset\n *\n * @param el - Element\n *\n * @returns Element offset\n */\nexport function getElementOffset(\n el: HTMLElement\n): ElementOffset {\n return {\n x: el.offsetLeft,\n y: el.offsetTop\n }\n}\n\n/**\n * Retrieve absolute element offset\n *\n * @param el - Element\n *\n * @returns Element offset\n */\nexport function getElementOffsetAbsolute(\n el: HTMLElement\n): ElementOffset {\n const rect = el.getBoundingClientRect()\n return {\n x: rect.x + window.scrollX,\n y: rect.y + window.scrollY\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element offset\n *\n * @param el - Element\n *\n * @returns Element offset observable\n */\nexport function watchElementOffset(\n el: HTMLElement\n): Observable<ElementOffset> {\n return merge(\n fromEvent(window, \"load\"),\n fromEvent(window, \"resize\")\n )\n .pipe(\n auditTime(0, animationFrameScheduler),\n map(() => getElementOffset(el)),\n startWith(getElementOffset(el))\n )\n}\n\n/**\n * Watch absolute element offset\n *\n * @param el - Element\n *\n * @returns Element offset observable\n */\nexport function watchElementOffsetAbsolute(\n el: HTMLElement\n): Observable<ElementOffset> {\n return merge(\n watchElementOffset(el),\n watchElementSize(document.body) // @todo find a better way for this\n )\n .pipe(\n map(() => getElementOffsetAbsolute(el)),\n startWith(getElementOffsetAbsolute(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n animationFrameScheduler,\n auditTime,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\nimport { ElementOffset } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element content offset (= scroll offset)\n *\n * @param el - Element\n *\n * @returns Element content offset\n */\nexport function getElementContentOffset(\n el: HTMLElement\n): ElementOffset {\n return {\n x: el.scrollLeft,\n y: el.scrollTop\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element content offset\n *\n * @param el - Element\n *\n * @returns Element content offset observable\n */\nexport function watchElementContentOffset(\n el: HTMLElement\n): Observable<ElementOffset> {\n return merge(\n fromEvent(el, \"scroll\"),\n fromEvent(window, \"scroll\"),\n fromEvent(window, \"resize\")\n )\n .pipe(\n auditTime(0, animationFrameScheduler),\n map(() => getElementContentOffset(el)),\n startWith(getElementContentOffset(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n Subject,\n defer,\n distinctUntilChanged,\n filter,\n finalize,\n map,\n merge,\n of,\n shareReplay,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport {\n getElementContentSize,\n getElementSize,\n watchElementContentOffset\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Intersection observer entry subject\n */\nconst entry$ = new Subject<IntersectionObserverEntry>()\n\n/**\n * Intersection observer observable\n *\n * This observable will create an `IntersectionObserver` on first subscription\n * and will automatically terminate it when there are no more subscribers.\n *\n * @see https://bit.ly/3iIYfEm - Google Groups on performance\n */\nconst observer$ = defer(() => of(\n new IntersectionObserver(entries => {\n for (const entry of entries)\n entry$.next(entry)\n }, {\n threshold: 0\n })\n))\n .pipe(\n switchMap(observer => merge(NEVER, of(observer))\n .pipe(\n finalize(() => observer.disconnect())\n )\n ),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element visibility\n *\n * @param el - Element\n *\n * @returns Element visibility observable\n */\nexport function watchElementVisibility(\n el: HTMLElement\n): Observable<boolean> {\n return observer$\n .pipe(\n tap(observer => observer.observe(el)),\n switchMap(observer => entry$\n .pipe(\n filter(({ target }) => target === el),\n finalize(() => observer.unobserve(el)),\n map(({ isIntersecting }) => isIntersecting)\n )\n )\n )\n}\n\n/**\n * Watch element boundary\n *\n * This function returns an observable which emits whether the bottom content\n * boundary (= scroll offset) of an element is within a certain threshold.\n *\n * @param el - Element\n * @param threshold - Threshold\n *\n * @returns Element boundary observable\n */\nexport function watchElementBoundary(\n el: HTMLElement, threshold = 16\n): Observable<boolean> {\n return watchElementContentOffset(el)\n .pipe(\n map(({ y }) => {\n const visible = getElementSize(el)\n const content = getElementContentSize(el)\n return y >= (\n content.height - visible.height - threshold\n )\n }),\n distinctUntilChanged()\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n startWith\n} from \"rxjs\"\n\nimport { getElement } from \"../element\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Toggle\n */\nexport type Toggle =\n | \"drawer\" /* Toggle for drawer */\n | \"search\" /* Toggle for search */\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Toggle map\n */\nconst toggles: Record<Toggle, HTMLInputElement> = {\n drawer: getElement(\"[data-md-toggle=drawer]\"),\n search: getElement(\"[data-md-toggle=search]\")\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve the value of a toggle\n *\n * @param name - Toggle\n *\n * @returns Toggle value\n */\nexport function getToggle(name: Toggle): boolean {\n return toggles[name].checked\n}\n\n/**\n * Set toggle\n *\n * Simulating a click event seems to be the most cross-browser compatible way\n * of changing the value while also emitting a `change` event. Before, Material\n * used `CustomEvent` to programmatically change the value of a toggle, but this\n * is a much simpler and cleaner solution which doesn't require a polyfill.\n *\n * @param name - Toggle\n * @param value - Toggle value\n */\nexport function setToggle(name: Toggle, value: boolean): void {\n if (toggles[name].checked !== value)\n toggles[name].click()\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch toggle\n *\n * @param name - Toggle\n *\n * @returns Toggle value observable\n */\nexport function watchToggle(name: Toggle): Observable<boolean> {\n const el = toggles[name]\n return fromEvent(el, \"change\")\n .pipe(\n map(() => el.checked),\n startWith(el.checked)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n filter,\n fromEvent,\n map,\n merge,\n share,\n startWith,\n switchMap\n} from \"rxjs\"\n\nimport { getActiveElement } from \"../element\"\nimport { getToggle } from \"../toggle\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Keyboard mode\n */\nexport type KeyboardMode =\n | \"global\" /* Global */\n | \"search\" /* Search is open */\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Keyboard\n */\nexport interface Keyboard {\n mode: KeyboardMode /* Keyboard mode */\n type: string /* Key type */\n claim(): void /* Key claim */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Check whether an element may receive keyboard input\n *\n * @param el - Element\n * @param type - Key type\n *\n * @returns Test result\n */\nfunction isSusceptibleToKeyboard(\n el: HTMLElement, type: string\n): boolean {\n switch (el.constructor) {\n\n /* Input elements */\n case HTMLInputElement:\n /* @ts-expect-error - omit unnecessary type cast */\n if (el.type === \"radio\")\n return /^Arrow/.test(type)\n else\n return true\n\n /* Select element and textarea */\n case HTMLSelectElement:\n case HTMLTextAreaElement:\n return true\n\n /* Everything else */\n default:\n return el.isContentEditable\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch composition events\n *\n * @returns Composition observable\n */\nexport function watchComposition(): Observable<boolean> {\n return merge(\n fromEvent(window, \"compositionstart\").pipe(map(() => true)),\n fromEvent(window, \"compositionend\").pipe(map(() => false))\n )\n .pipe(\n startWith(false)\n )\n}\n\n/**\n * Watch keyboard\n *\n * @returns Keyboard observable\n */\nexport function watchKeyboard(): Observable<Keyboard> {\n const keyboard$ = fromEvent<KeyboardEvent>(window, \"keydown\")\n .pipe(\n filter(ev => !(ev.metaKey || ev.ctrlKey)),\n map(ev => ({\n mode: getToggle(\"search\") ? \"search\" : \"global\",\n type: ev.key,\n claim() {\n ev.preventDefault()\n ev.stopPropagation()\n }\n } as Keyboard)),\n filter(({ mode, type }) => {\n if (mode === \"global\") {\n const active = getActiveElement()\n if (typeof active !== \"undefined\")\n return !isSusceptibleToKeyboard(active, type)\n }\n return true\n }),\n share()\n )\n\n /* Don't emit during composition events - see https://bit.ly/3te3Wl8 */\n return watchComposition()\n .pipe(\n switchMap(active => !active ? keyboard$ : EMPTY)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Subject } from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve location\n *\n * This function returns a `URL` object (and not `Location`) to normalize the\n * typings across the application. Furthermore, locations need to be tracked\n * without setting them and `Location` is a singleton which represents the\n * current location.\n *\n * @returns URL\n */\nexport function getLocation(): URL {\n return new URL(location.href)\n}\n\n/**\n * Set location\n *\n * If instant navigation is enabled, this function creates a temporary anchor\n * element, sets the `href` attribute, appends it to the body, clicks it, and\n * then removes it again. The event will bubble up the DOM and trigger be\n * intercepted by the instant loading business logic.\n *\n * Note that we must append and remove the anchor element, or the event will\n * not bubble up the DOM, making it impossible to intercept it.\n *\n * @param url - URL to navigate to\n * @param navigate - Force navigation\n */\nexport function setLocation(\n url: URL | HTMLLinkElement, navigate = false\n): void {\n if (feature(\"navigation.instant\") && !navigate) {\n const el = h(\"a\", { href: url.href })\n document.body.appendChild(el)\n el.click()\n el.remove()\n\n // If we're not using instant navigation, and the page should not be reloaded\n // just instruct the browser to navigate to the given URL\n } else {\n location.href = url.href\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch location\n *\n * @returns Location subject\n */\nexport function watchLocation(): Subject<URL> {\n return new Subject<URL>()\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n filter,\n fromEvent,\n map,\n merge,\n shareReplay,\n startWith\n} from \"rxjs\"\n\nimport { getOptionalElement } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve location hash\n *\n * @returns Location hash\n */\nexport function getLocationHash(): string {\n return location.hash.slice(1)\n}\n\n/**\n * Set location hash\n *\n * Setting a new fragment identifier via `location.hash` will have no effect\n * if the value doesn't change. When a new fragment identifier is set, we want\n * the browser to target the respective element at all times, which is why we\n * use this dirty little trick.\n *\n * @param hash - Location hash\n */\nexport function setLocationHash(hash: string): void {\n const el = h(\"a\", { href: hash })\n el.addEventListener(\"click\", ev => ev.stopPropagation())\n el.click()\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch location hash\n *\n * @param location$ - Location observable\n *\n * @returns Location hash observable\n */\nexport function watchLocationHash(\n location$: Observable<URL>\n): Observable<string> {\n return merge(\n fromEvent<HashChangeEvent>(window, \"hashchange\"),\n location$\n )\n .pipe(\n map(getLocationHash),\n startWith(getLocationHash()),\n filter(hash => hash.length > 0),\n shareReplay(1)\n )\n}\n\n/**\n * Watch location target\n *\n * @param location$ - Location observable\n *\n * @returns Location target observable\n */\nexport function watchLocationTarget(\n location$: Observable<URL>\n): Observable<HTMLElement> {\n return watchLocationHash(location$)\n .pipe(\n map(id => getOptionalElement(`[id=\"${id}\"]`)!),\n filter(el => typeof el !== \"undefined\")\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n fromEvent,\n fromEventPattern,\n map,\n merge,\n startWith,\n switchMap\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch media query\n *\n * Note that although `MediaQueryList.addListener` is deprecated we have to\n * use it, because it's the only way to ensure proper downward compatibility.\n *\n * @see https://bit.ly/3dUBH2m - GitHub issue\n *\n * @param query - Media query\n *\n * @returns Media observable\n */\nexport function watchMedia(query: string): Observable<boolean> {\n const media = matchMedia(query)\n return fromEventPattern<boolean>(next => (\n media.addListener(() => next(media.matches))\n ))\n .pipe(\n startWith(media.matches)\n )\n}\n\n/**\n * Watch print mode\n *\n * @returns Print observable\n */\nexport function watchPrint(): Observable<boolean> {\n const media = matchMedia(\"print\")\n return merge(\n fromEvent(window, \"beforeprint\").pipe(map(() => true)),\n fromEvent(window, \"afterprint\").pipe(map(() => false))\n )\n .pipe(\n startWith(media.matches)\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Toggle an observable with a media observable\n *\n * @template T - Data type\n *\n * @param query$ - Media observable\n * @param factory - Observable factory\n *\n * @returns Toggled observable\n */\nexport function at<T>(\n query$: Observable<boolean>, factory: () => Observable<T>\n): Observable<T> {\n return query$\n .pipe(\n switchMap(active => active ? factory() : EMPTY)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n map,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Options\n */\ninterface Options {\n progress$?: Subject<number> // Progress subject\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch the given URL\n *\n * This function returns an observable that emits the response as a blob and\n * completes, or emits an error if the request failed. The caller can cancel\n * the request by unsubscribing at any time, which will automatically abort\n * the inflight request and complete the observable.\n *\n * Note that we use `XMLHTTPRequest` not because we're nostalgic, but because\n * it's the only way to get progress events for downloads and also allow for\n * cancellation of requests, as the official Fetch API does not support this\n * yet, even though we're already in 2024.\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function request(\n url: URL | string, options?: Options\n): Observable<Blob> {\n return new Observable<Blob>(observer => {\n const req = new XMLHttpRequest()\n req.open(\"GET\", `${url}`)\n req.responseType = \"blob\"\n\n // Handle response\n req.addEventListener(\"load\", () => {\n if (req.status >= 200 && req.status < 300) {\n observer.next(req.response)\n observer.complete()\n\n // Every response that is not in the 2xx range is considered an error\n } else {\n observer.error(new Error(req.statusText))\n }\n })\n\n // Handle network errors\n req.addEventListener(\"error\", () => {\n observer.error(new Error(\"Network error\"))\n })\n\n // Handle aborted requests\n req.addEventListener(\"abort\", () => {\n observer.complete()\n })\n\n // Handle download progress\n if (typeof options?.progress$ !== \"undefined\") {\n req.addEventListener(\"progress\", event => {\n if (event.lengthComputable) {\n options.progress$!.next((event.loaded / event.total) * 100)\n\n // Hack: Chromium doesn't report the total number of bytes if content\n // is compressed, so we need this fallback - see https://t.ly/ZXofI\n } else {\n const length = req.getResponseHeader(\"Content-Length\") ?? 0\n options.progress$!.next((event.loaded / +length) * 100)\n }\n })\n\n // Immediately set progress to 5% to indicate that we're loading\n options.progress$.next(5)\n }\n\n // Send request and automatically abort request upon unsubscription\n req.send()\n return () => req.abort()\n })\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Fetch JSON from the given URL\n *\n * @template T - Data type\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestJSON<T>(\n url: URL | string, options?: Options\n): Observable<T> {\n return request(url, options)\n .pipe(\n switchMap(res => res.text()),\n map(body => JSON.parse(body) as T),\n shareReplay(1)\n )\n}\n\n/**\n * Fetch HTML from the given URL\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestHTML(\n url: URL | string, options?: Options\n): Observable<Document> {\n const dom = new DOMParser()\n return request(url, options)\n .pipe(\n switchMap(res => res.text()),\n map(res => dom.parseFromString(res, \"text/html\")),\n shareReplay(1)\n )\n}\n\n/**\n * Fetch XML from the given URL\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestXML(\n url: URL | string, options?: Options\n): Observable<Document> {\n const dom = new DOMParser()\n return request(url, options)\n .pipe(\n switchMap(res => res.text()),\n map(res => dom.parseFromString(res, \"text/xml\")),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport offset\n */\nexport interface ViewportOffset {\n x: number /* Horizontal offset */\n y: number /* Vertical offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve viewport offset\n *\n * On iOS Safari, viewport offset can be negative due to overflow scrolling.\n * As this may induce strange behaviors downstream, we'll just limit it to 0.\n *\n * @returns Viewport offset\n */\nexport function getViewportOffset(): ViewportOffset {\n return {\n x: Math.max(0, scrollX),\n y: Math.max(0, scrollY)\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport offset\n *\n * @returns Viewport offset observable\n */\nexport function watchViewportOffset(): Observable<ViewportOffset> {\n return merge(\n fromEvent(window, \"scroll\", { passive: true }),\n fromEvent(window, \"resize\", { passive: true })\n )\n .pipe(\n map(getViewportOffset),\n startWith(getViewportOffset())\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n startWith\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport size\n */\nexport interface ViewportSize {\n width: number /* Viewport width */\n height: number /* Viewport height */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve viewport size\n *\n * @returns Viewport size\n */\nexport function getViewportSize(): ViewportSize {\n return {\n width: innerWidth,\n height: innerHeight\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport size\n *\n * @returns Viewport size observable\n */\nexport function watchViewportSize(): Observable<ViewportSize> {\n return fromEvent(window, \"resize\", { passive: true })\n .pipe(\n map(getViewportSize),\n startWith(getViewportSize())\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n map,\n shareReplay\n} from \"rxjs\"\n\nimport {\n ViewportOffset,\n watchViewportOffset\n} from \"../offset\"\nimport {\n ViewportSize,\n watchViewportSize\n} from \"../size\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport\n */\nexport interface Viewport {\n offset: ViewportOffset /* Viewport offset */\n size: ViewportSize /* Viewport size */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport\n *\n * @returns Viewport observable\n */\nexport function watchViewport(): Observable<Viewport> {\n return combineLatest([\n watchViewportOffset(),\n watchViewportSize()\n ])\n .pipe(\n map(([offset, size]) => ({ offset, size })),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n distinctUntilKeyChanged,\n map\n} from \"rxjs\"\n\nimport { Header } from \"~/components\"\n\nimport { getElementOffset } from \"../../element\"\nimport { Viewport } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport relative to element\n *\n * @param el - Element\n * @param options - Options\n *\n * @returns Viewport observable\n */\nexport function watchViewportAt(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<Viewport> {\n const size$ = viewport$\n .pipe(\n distinctUntilKeyChanged(\"size\")\n )\n\n /* Compute element offset */\n const offset$ = combineLatest([size$, header$])\n .pipe(\n map(() => getElementOffset(el))\n )\n\n /* Compute relative viewport, return hot observable */\n return combineLatest([header$, viewport$, offset$])\n .pipe(\n map(([{ height }, { offset, size }, { x, y }]) => ({\n offset: {\n x: offset.x - x,\n y: offset.y - y + height\n },\n size\n }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n endWith,\n fromEvent,\n ignoreElements,\n mergeWith,\n share,\n takeUntil\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Worker message\n */\nexport interface WorkerMessage {\n type: unknown /* Message type */\n data?: unknown /* Message data */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create an observable for receiving from a web worker\n *\n * @template T - Data type\n *\n * @param worker - Web worker\n *\n * @returns Message observable\n */\nfunction recv<T>(worker: Worker): Observable<T> {\n return fromEvent<MessageEvent<T>, T>(worker, \"message\", ev => ev.data)\n}\n\n/**\n * Create a subject for sending to a web worker\n *\n * @template T - Data type\n *\n * @param worker - Web worker\n *\n * @returns Message subject\n */\nfunction send<T>(worker: Worker): Subject<T> {\n const send$ = new Subject<T>()\n send$.subscribe(data => worker.postMessage(data))\n\n /* Return message subject */\n return send$\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a bidirectional communication channel to a web worker\n *\n * @template T - Data type\n *\n * @param url - Worker URL\n * @param worker - Worker\n *\n * @returns Worker subject\n */\nexport function watchWorker<T extends WorkerMessage>(\n url: string, worker = new Worker(url)\n): Subject<T> {\n const recv$ = recv<T>(worker)\n const send$ = send<T>(worker)\n\n /* Create worker subject and forward messages */\n const worker$ = new Subject<T>()\n worker$.subscribe(send$)\n\n /* Return worker subject */\n const done$ = send$.pipe(ignoreElements(), endWith(true))\n return worker$\n .pipe(\n ignoreElements(),\n mergeWith(recv$.pipe(takeUntil(done$))),\n share()\n ) as Subject<T>\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { getElement, getLocation } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Feature flag\n */\nexport type Flag =\n | \"announce.dismiss\" /* Dismissable announcement bar */\n | \"content.code.annotate\" /* Code annotations */\n | \"content.code.copy\" /* Code copy button */\n | \"content.lazy\" /* Lazy content elements */\n | \"content.tabs.link\" /* Link content tabs */\n | \"content.tooltips\" /* Tooltips */\n | \"header.autohide\" /* Hide header */\n | \"navigation.expand\" /* Automatic expansion */\n | \"navigation.indexes\" /* Section pages */\n | \"navigation.instant\" /* Instant navigation */\n | \"navigation.instant.progress\" /* Instant navigation progress */\n | \"navigation.sections\" /* Section navigation */\n | \"navigation.tabs\" /* Tabs navigation */\n | \"navigation.tabs.sticky\" /* Tabs navigation (sticky) */\n | \"navigation.top\" /* Back-to-top button */\n | \"navigation.tracking\" /* Anchor tracking */\n | \"search.highlight\" /* Search highlighting */\n | \"search.share\" /* Search sharing */\n | \"search.suggest\" /* Search suggestions */\n | \"toc.follow\" /* Following table of contents */\n | \"toc.integrate\" /* Integrated table of contents */\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Translation\n */\nexport type Translation =\n | \"clipboard.copy\" /* Copy to clipboard */\n | \"clipboard.copied\" /* Copied to clipboard */\n | \"search.result.placeholder\" /* Type to start searching */\n | \"search.result.none\" /* No matching documents */\n | \"search.result.one\" /* 1 matching document */\n | \"search.result.other\" /* # matching documents */\n | \"search.result.more.one\" /* 1 more on this page */\n | \"search.result.more.other\" /* # more on this page */\n | \"search.result.term.missing\" /* Missing */\n | \"select.version\" /* Version selector */\n\n/**\n * Translations\n */\nexport type Translations =\n Record<Translation, string>\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Versioning\n */\nexport interface Versioning {\n provider: \"mike\" /* Version provider */\n default?: string | string[] /* Default version */\n alias?: boolean /* Show alias */\n}\n\n/**\n * Configuration\n */\nexport interface Config {\n base: string /* Base URL */\n features: Flag[] /* Feature flags */\n translations: Translations /* Translations */\n search: string /* Search worker URL */\n tags?: Record<string, string> /* Tags mapping */\n version?: Versioning /* Versioning */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve global configuration and make base URL absolute\n */\nconst script = getElement(\"#__config\")\nconst config: Config = JSON.parse(script.textContent!)\nconfig.base = `${new URL(config.base, getLocation())}`\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve global configuration\n *\n * @returns Global configuration\n */\nexport function configuration(): Config {\n return config\n}\n\n/**\n * Check whether a feature flag is enabled\n *\n * @param flag - Feature flag\n *\n * @returns Test result\n */\nexport function feature(flag: Flag): boolean {\n return config.features.includes(flag)\n}\n\n/**\n * Retrieve the translation for the given key\n *\n * @param key - Key to be translated\n * @param value - Positional value, if any\n *\n * @returns Translation\n */\nexport function translation(\n key: Translation, value?: string | number\n): string {\n return typeof value !== \"undefined\"\n ? config.translations[key].replace(\"#\", value.toString())\n : config.translations[key]\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { getElement, getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Component type\n */\nexport type ComponentType =\n | \"announce\" /* Announcement bar */\n | \"container\" /* Container */\n | \"consent\" /* Consent */\n | \"content\" /* Content */\n | \"dialog\" /* Dialog */\n | \"header\" /* Header */\n | \"header-title\" /* Header title */\n | \"header-topic\" /* Header topic */\n | \"main\" /* Main area */\n | \"outdated\" /* Version warning */\n | \"palette\" /* Color palette */\n | \"progress\" /* Progress indicator */\n | \"search\" /* Search */\n | \"search-query\" /* Search input */\n | \"search-result\" /* Search results */\n | \"search-share\" /* Search sharing */\n | \"search-suggest\" /* Search suggestions */\n | \"sidebar\" /* Sidebar */\n | \"skip\" /* Skip link */\n | \"source\" /* Repository information */\n | \"tabs\" /* Navigation tabs */\n | \"toc\" /* Table of contents */\n | \"top\" /* Back-to-top button */\n\n/**\n * Component\n *\n * @template T - Component type\n * @template U - Reference type\n */\nexport type Component<\n T extends {} = {},\n U extends HTMLElement = HTMLElement\n> =\n T & {\n ref: U /* Component reference */\n }\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Component type map\n */\ninterface ComponentTypeMap {\n \"announce\": HTMLElement /* Announcement bar */\n \"container\": HTMLElement /* Container */\n \"consent\": HTMLElement /* Consent */\n \"content\": HTMLElement /* Content */\n \"dialog\": HTMLElement /* Dialog */\n \"header\": HTMLElement /* Header */\n \"header-title\": HTMLElement /* Header title */\n \"header-topic\": HTMLElement /* Header topic */\n \"main\": HTMLElement /* Main area */\n \"outdated\": HTMLElement /* Version warning */\n \"palette\": HTMLElement /* Color palette */\n \"progress\": HTMLElement /* Progress indicator */\n \"search\": HTMLElement /* Search */\n \"search-query\": HTMLInputElement /* Search input */\n \"search-result\": HTMLElement /* Search results */\n \"search-share\": HTMLAnchorElement /* Search sharing */\n \"search-suggest\": HTMLElement /* Search suggestions */\n \"sidebar\": HTMLElement /* Sidebar */\n \"skip\": HTMLAnchorElement /* Skip link */\n \"source\": HTMLAnchorElement /* Repository information */\n \"tabs\": HTMLElement /* Navigation tabs */\n \"toc\": HTMLElement /* Table of contents */\n \"top\": HTMLAnchorElement /* Back-to-top button */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve the element for a given component or throw a reference error\n *\n * @template T - Component type\n *\n * @param type - Component type\n * @param node - Node of reference\n *\n * @returns Element\n */\nexport function getComponentElement<T extends ComponentType>(\n type: T, node: ParentNode = document\n): ComponentTypeMap[T] {\n return getElement(`[data-md-component=${type}]`, node)\n}\n\n/**\n * Retrieve all elements for a given component\n *\n * @template T - Component type\n *\n * @param type - Component type\n * @param node - Node of reference\n *\n * @returns Elements\n */\nexport function getComponentElements<T extends ComponentType>(\n type: T, node: ParentNode = document\n): ComponentTypeMap[T][] {\n return getElements(`[data-md-component=${type}]`, node)\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n finalize,\n fromEvent,\n map,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { getElement } from \"~/browser\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Announcement bar\n */\nexport interface Announce {\n hash: number /* Content hash */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch announcement bar\n *\n * @param el - Announcement bar element\n *\n * @returns Announcement bar observable\n */\nexport function watchAnnounce(\n el: HTMLElement\n): Observable<Announce> {\n const button = getElement(\".md-typeset > :first-child\", el)\n return fromEvent(button, \"click\", { once: true })\n .pipe(\n map(() => getElement(\".md-typeset\", el)),\n map(content => ({ hash: __md_hash(content.innerHTML) }))\n )\n}\n\n/**\n * Mount announcement bar\n *\n * @param el - Announcement bar element\n *\n * @returns Announcement bar component observable\n */\nexport function mountAnnounce(\n el: HTMLElement\n): Observable<Component<Announce>> {\n if (!feature(\"announce.dismiss\") || !el.childElementCount)\n return EMPTY\n\n /* Support instant navigation - see https://t.ly/3FTme */\n if (!el.hidden) {\n const content = getElement(\".md-typeset\", el)\n if (__md_hash(content.innerHTML) === __md_get(\"__announce\"))\n el.hidden = true\n }\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<Announce>()\n push$.subscribe(({ hash }) => {\n el.hidden = true\n\n /* Persist preference in local storage */\n __md_set<number>(\"__announce\", hash)\n })\n\n /* Create and return component */\n return watchAnnounce(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n finalize,\n map,\n tap\n} from \"rxjs\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Consent\n */\nexport interface Consent {\n hidden: boolean /* Consent is hidden */\n}\n\n/**\n * Consent defaults\n */\nexport interface ConsentDefaults {\n analytics?: boolean /* Consent for Analytics */\n github?: boolean /* Consent for GitHub */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n target$: Observable<HTMLElement> /* Target observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch consent\n *\n * @param el - Consent element\n * @param options - Options\n *\n * @returns Consent observable\n */\nexport function watchConsent(\n el: HTMLElement, { target$ }: WatchOptions\n): Observable<Consent> {\n return target$\n .pipe(\n map(target => ({ hidden: target !== el }))\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount consent\n *\n * @param el - Consent element\n * @param options - Options\n *\n * @returns Consent component observable\n */\nexport function mountConsent(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Consent>> {\n const internal$ = new Subject<Consent>()\n internal$.subscribe(({ hidden }) => {\n el.hidden = hidden\n })\n\n /* Create and return component */\n return watchConsent(el, options)\n .pipe(\n tap(state => internal$.next(state)),\n finalize(() => internal$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ComponentChild } from \"preact\"\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tooltip style\n */\nexport type TooltipStyle =\n | \"inline\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a tooltip\n *\n * @param id - Tooltip identifier\n * @param style - Tooltip style\n *\n * @returns Element\n */\nexport function renderTooltip(\n id?: string, style?: TooltipStyle\n): HTMLElement {\n if (style === \"inline\") { // @todo refactor control flow\n return (\n <div class=\"md-tooltip md-tooltip--inline\" id={id} role=\"tooltip\">\n <div class=\"md-tooltip__inner md-typeset\"></div>\n </div>\n )\n } else {\n return (\n <div class=\"md-tooltip\" id={id} role=\"tooltip\">\n <div class=\"md-tooltip__inner md-typeset\"></div>\n </div>\n )\n }\n}\n\n// @todo: rename\nexport function renderInlineTooltip2(\n ...children: ComponentChild[]\n): HTMLElement {\n return (\n <div class=\"md-tooltip2\" role=\"tooltip\">\n <div class=\"md-tooltip2__inner md-typeset\">\n {children}\n </div>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\nimport { renderTooltip } from \"../tooltip\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render an annotation\n *\n * @param id - Annotation identifier\n * @param prefix - Tooltip identifier prefix\n *\n * @returns Element\n */\nexport function renderAnnotation(\n id: string | number, prefix?: string\n): HTMLElement {\n prefix = prefix ? `${prefix}_annotation_${id}` : undefined\n\n /* Render tooltip with anchor, if given */\n if (prefix) {\n const anchor = prefix ? `#${prefix}` : undefined\n return (\n <aside class=\"md-annotation\" tabIndex={0}>\n {renderTooltip(prefix)}\n <a href={anchor} class=\"md-annotation__index\" tabIndex={-1}>\n <span data-md-annotation-id={id}></span>\n </a>\n </aside>\n )\n } else {\n return (\n <aside class=\"md-annotation\" tabIndex={0}>\n {renderTooltip(prefix)}\n <span class=\"md-annotation__index\" tabIndex={-1}>\n <span data-md-annotation-id={id}></span>\n </span>\n </aside>\n )\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { translation } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a 'copy-to-clipboard' button\n *\n * @param id - Unique identifier\n *\n * @returns Element\n */\nexport function renderClipboardButton(id: string): HTMLElement {\n return (\n <button\n class=\"md-clipboard md-icon\"\n title={translation(\"clipboard.copy\")}\n data-clipboard-target={`#${id} > code`}\n ></button>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\nimport { ComponentChild } from \"preact\"\n\nimport { configuration, feature, translation } from \"~/_\"\nimport { SearchItem } from \"~/integrations/search\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Render flag\n */\nconst enum Flag {\n TEASER = 1, /* Render teaser */\n PARENT = 2 /* Render as parent */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper function\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a search document\n *\n * @param document - Search document\n * @param flag - Render flags\n *\n * @returns Element\n */\nfunction renderSearchDocument(\n document: SearchItem, flag: Flag\n): HTMLElement {\n const parent = flag & Flag.PARENT\n const teaser = flag & Flag.TEASER\n\n /* Render missing query terms */\n const missing = Object.keys(document.terms)\n .filter(key => !document.terms[key])\n .reduce<ComponentChild[]>((list, key) => [\n ...list, <del>{escapeHTML(key)}</del>, \" \"\n ], [])\n .slice(0, -1)\n\n /* Assemble query string for highlighting */\n const config = configuration()\n const url = new URL(document.location, config.base)\n if (feature(\"search.highlight\"))\n url.searchParams.set(\"h\", Object.entries(document.terms)\n .filter(([, match]) => match)\n .reduce((highlight, [value]) => `${highlight} ${value}`.trim(), \"\")\n )\n\n /* Render article or section, depending on flags */\n const { tags } = configuration()\n return (\n <a href={`${url}`} class=\"md-search-result__link\" tabIndex={-1}>\n <article\n class=\"md-search-result__article md-typeset\"\n data-md-score={document.score.toFixed(2)}\n >\n {parent > 0 && <div class=\"md-search-result__icon md-icon\"></div>}\n {parent > 0 && <h1>{document.title}</h1>}\n {parent <= 0 && <h2>{document.title}</h2>}\n {teaser > 0 && document.text.length > 0 &&\n document.text\n }\n {document.tags && (\n <nav class=\"md-tags\">\n {document.tags.map(tag => {\n const type = tags\n ? tag in tags\n ? `md-tag-icon md-tag--${tags[tag]}`\n : \"md-tag-icon\"\n : \"\"\n return (\n <span class={`md-tag ${type}`}>{tag}</span>\n )\n })}\n </nav>\n )}\n {teaser > 0 && missing.length > 0 &&\n <p class=\"md-search-result__terms\">\n {translation(\"search.result.term.missing\")}: {...missing}\n </p>\n }\n </article>\n </a>\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a search result\n *\n * @param result - Search result\n *\n * @returns Element\n */\nexport function renderSearchResultItem(\n result: SearchItem[]\n): HTMLElement {\n const threshold = result[0].score\n const docs = [...result]\n\n const config = configuration()\n\n /* Find and extract parent article */\n const parent = docs.findIndex(doc => {\n const l = `${new URL(doc.location, config.base)}` // @todo hacky\n return !l.includes(\"#\")\n })\n const [article] = docs.splice(parent, 1)\n\n /* Determine last index above threshold */\n let index = docs.findIndex(doc => doc.score < threshold)\n if (index === -1)\n index = docs.length\n\n /* Partition sections */\n const best = docs.slice(0, index)\n const more = docs.slice(index)\n\n /* Render children */\n const children = [\n renderSearchDocument(article, Flag.PARENT | +(!parent && index === 0)),\n ...best.map(section => renderSearchDocument(section, Flag.TEASER)),\n ...more.length ? [\n <details class=\"md-search-result__more\">\n <summary tabIndex={-1}>\n <div>\n {more.length > 0 && more.length === 1\n ? translation(\"search.result.more.one\")\n : translation(\"search.result.more.other\", more.length)\n }\n </div>\n </summary>\n {...more.map(section => renderSearchDocument(section, Flag.TEASER))}\n </details>\n ] : []\n ]\n\n /* Render search result */\n return (\n <li class=\"md-search-result__item\">\n {children}\n </li>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { SourceFacts } from \"~/components\"\nimport { h, round } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render repository facts\n *\n * @param facts - Repository facts\n *\n * @returns Element\n */\nexport function renderSourceFacts(facts: SourceFacts): HTMLElement {\n return (\n <ul class=\"md-source__facts\">\n {Object.entries(facts).map(([key, value]) => (\n <li class={`md-source__fact md-source__fact--${key}`}>\n {typeof value === \"number\" ? round(value) : value}\n </li>\n ))}\n </ul>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tabbed control type\n */\ntype TabbedControlType =\n | \"prev\"\n | \"next\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render control for content tabs\n *\n * @param type - Control type\n *\n * @returns Element\n */\nexport function renderTabbedControl(\n type: TabbedControlType\n): HTMLElement {\n const classes = `tabbed-control tabbed-control--${type}`\n return (\n <div class={classes} hidden>\n <button class=\"tabbed-button\" tabIndex={-1} aria-hidden=\"true\"></button>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a table inside a wrapper to improve scrolling on mobile\n *\n * @param table - Table element\n *\n * @returns Element\n */\nexport function renderTable(table: HTMLElement): HTMLElement {\n return (\n <div class=\"md-typeset__scrollwrap\">\n <div class=\"md-typeset__table\">\n {table}\n </div>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { configuration, translation } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Version properties\n */\nexport interface VersionProperties {\n hidden?: boolean /* Version is hidden */\n}\n\n/**\n * Version\n */\nexport interface Version {\n version: string /* Version identifier */\n title: string /* Version title */\n aliases: string[] /* Version aliases */\n properties?: VersionProperties /* Version properties */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a version\n *\n * @param version - Version\n *\n * @returns Element\n */\nfunction renderVersion(version: Version): HTMLElement {\n const config = configuration()\n\n /* Ensure trailing slash - see https://bit.ly/3rL5u3f */\n const url = new URL(`../${version.version}/`, config.base)\n return (\n <li class=\"md-version__item\">\n <a href={`${url}`} class=\"md-version__link\">\n {version.title}\n {config.version?.alias && version.aliases.length > 0 && (\n <span class=\"md-version__alias\">\n {version.aliases[0]}\n </span>\n )}\n </a>\n </li>\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a version selector\n *\n * @param versions - Versions\n * @param active - Active version\n *\n * @returns Element\n */\nexport function renderVersionSelector(\n versions: Version[], active: Version\n): HTMLElement {\n const config = configuration()\n versions = versions.filter(version => !version.properties?.hidden)\n return (\n <div class=\"md-version\">\n <button\n class=\"md-version__current\"\n aria-label={translation(\"select.version\")}\n >\n {active.title}\n {config.version?.alias && active.aliases.length > 0 && (\n <span class=\"md-version__alias\">\n {active.aliases[0]}\n </span>\n )}\n </button>\n <ul class=\"md-version__list\">\n {versions.map(renderVersion)}\n </ul>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n BehaviorSubject,\n EMPTY,\n Observable,\n Subject,\n animationFrameScheduler,\n combineLatest,\n combineLatestWith,\n debounce,\n defer,\n distinctUntilChanged,\n endWith,\n filter,\n finalize,\n first,\n ignoreElements,\n map,\n mergeMap,\n observeOn,\n queueScheduler,\n share,\n startWith,\n switchMap,\n tap,\n throttleTime,\n timer,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n ElementOffset,\n Viewport,\n getElement,\n getElementContainers,\n getElementOffsetAbsolute,\n getElementSize,\n watchElementContentOffset,\n watchElementFocus,\n watchElementHover\n} from \"~/browser\"\nimport { renderInlineTooltip2 } from \"~/templates\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tooltip\n */\nexport interface Tooltip {\n active: boolean // Tooltip is active\n offset: ElementOffset // Tooltip offset\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Dependencies\n */\ninterface Dependencies {\n content$: Observable<HTMLElement> // Tooltip content observable\n viewport$: Observable<Viewport> // Viewport observable\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Global sequence number for tooltips\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch tooltip\n *\n * This function tracks the tooltip host element, and deduces the active state\n * and offset of the tooltip from it. The active state is determined by whether\n * the host element is focused or hovered, and the offset is determined by the\n * host element's absolute position in the document.\n *\n * @param el - Tooltip host element\n *\n * @returns Tooltip observable\n */\nexport function watchTooltip2(\n el: HTMLElement\n): Observable<Tooltip> {\n\n // Compute whether tooltip should be shown - we need to watch both focus and\n // hover events on the host element and emit if one of them is active. In case\n // of a hover event, we keep the element visible for a short amount of time\n // after the pointer left the host element for a better user experience.\n const active$ =\n combineLatest([\n watchElementFocus(el),\n watchElementHover(el)\n ])\n .pipe(\n map(([focus, hover]) => focus || hover),\n distinctUntilChanged()\n )\n\n // We need to determine all parent elements of the host element that are\n // currently scrollable, as they might affect the position of the tooltip\n // depending on their horizontal of vertical offset. We must track all of\n // them and recompute the position of the tooltip if they change.\n const offset$ =\n defer(() => getElementContainers(el)).pipe(\n mergeMap(watchElementContentOffset),\n throttleTime(1),\n // Note that we need to poll the value again if the active state changes,\n // as otherwise the tooltip might be misplaced. This particularly happens\n // when using third-party integrations like tablesort that change the\n // position of elements \u2013 see https://t.ly/Y-V7X\n combineLatestWith(active$),\n map(() => getElementOffsetAbsolute(el)),\n )\n\n // Only track parent elements and compute offset of the tooltip host if the\n // tooltip should be shown - we defer the computation of the offset until the\n // tooltip becomes active for the first time. This is necessary, because we\n // must also keep the tooltip active as long as it is focused or hovered.\n return active$.pipe(\n first(active => active),\n switchMap(() => combineLatest([active$, offset$])),\n map(([active, offset]) => ({ active, offset })),\n share()\n )\n}\n\n/**\n * Mount tooltip\n *\n * This function renders a tooltip with the content from the provided `content$`\n * observable as passed via the dependencies. If the returned element has a role\n * of type `dialog`, the tooltip is considered to be interactive, and rendered\n * either above or below the host element, depending on the available space.\n *\n * If the returned element has a role of type `tooltip`, the tooltip is always\n * rendered below the host element and considered to be non-interactive. This\n * allows us to reuse the same positioning logic for both interactive and\n * non-interactive tooltips, as it is largely the same.\n *\n * @param el - Tooltip host element\n * @param dependencies - Dependencies\n *\n * @returns Tooltip component observable\n */\nexport function mountTooltip2(\n el: HTMLElement, dependencies: Dependencies\n): Observable<Component<Tooltip>> {\n const { content$, viewport$ } = dependencies\n\n // Compute unique tooltip id - this is necessary to associate the tooltip host\n // element with the tooltip element for ARIA purposes\n const id = `__tooltip2_${sequence++}`\n\n // Create component on subscription\n return defer(() => {\n const push$ = new Subject<Tooltip>()\n\n // Create subject to track tooltip presence and visibility - we use another\n // purely internal subject to track the tooltip's presence and visibility,\n // as the tooltip should be visible if the host element or tooltip itself\n // is focused or hovered to allow for smooth pointer migration\n const show$ = new BehaviorSubject(false)\n push$.pipe(ignoreElements(), endWith(false))\n .subscribe(show$)\n\n // Create observable controlling tooltip element - we create and attach the\n // tooltip only if it is actually present, in order to keep the number of\n // elements low. We need to keep the tooltip visible for a short time after\n // the pointer left the host element or tooltip itself. For this, we use an\n // inner subscription to the tooltip observable, which we terminate when the\n // tooltip should not be shown, automatically removing the element. Moreover\n // we use the queue scheduler, which will schedule synchronously in case the\n // tooltip should be shown, and asynchronously if it should be hidden.\n const node$ = show$.pipe(\n debounce(active => timer(+!active * 250, queueScheduler)),\n distinctUntilChanged(),\n switchMap(active => active ? content$ : EMPTY),\n tap(node => node.id = id),\n share()\n )\n\n // Compute tooltip presence and visibility - the tooltip should be shown if\n // the host element or the tooltip itself is focused or hovered\n combineLatest([\n push$.pipe(map(({ active }) => active)),\n node$.pipe(\n switchMap(node => watchElementHover(node, 250)),\n startWith(false)\n )\n ])\n .pipe(map(states => states.some(active => active)))\n .subscribe(show$)\n\n // Compute tooltip origin - we need to compute the tooltip origin depending\n // on the position of the host element, the viewport size, as well as the\n // actual size of the tooltip, if positioned above. The tooltip must about\n // to be rendered for this to be correct, which is why we do it here.\n const origin$ = show$.pipe(\n filter(active => active),\n withLatestFrom(node$, viewport$),\n map(([_, node, { size }]) => {\n const host = el.getBoundingClientRect()\n const x = host.width / 2\n\n // If the tooltip is non-interactive, we always render it below the\n // actual element because all operating systems do it that way\n if (node.role === \"tooltip\") {\n return { x, y: 8 + host.height }\n\n // Otherwise, we determine where there is more space, and render the\n // tooltip either above or below the host element\n } else if (host.y >= size.height / 2) {\n const { height } = getElementSize(node)\n return { x, y: -16 - height }\n } else {\n return { x, y: +16 + host.height }\n }\n })\n )\n\n // Update tooltip position - we always need to update the position of the\n // tooltip, as it might change depending on the viewport offset of the host\n combineLatest([node$, push$, origin$])\n .subscribe(([node, { offset }, origin]) => {\n node.style.setProperty(\"--md-tooltip-host-x\", `${offset.x}px`)\n node.style.setProperty(\"--md-tooltip-host-y\", `${offset.y}px`)\n\n // Update tooltip origin - this is mainly set to determine the position\n // of the tooltip tail, to show the direction it is originating from\n node.style.setProperty(\"--md-tooltip-x\", `${origin.x}px`)\n node.style.setProperty(\"--md-tooltip-y\", `${origin.y}px`)\n\n // Update tooltip render location, i.e., whether the tooltip is shown\n // above or below the host element, depending on the available space\n node.classList.toggle(\"md-tooltip2--top\", origin.y < 0)\n node.classList.toggle(\"md-tooltip2--bottom\", origin.y >= 0)\n })\n\n // Update tooltip width - we only explicitly set the width of the tooltip\n // if it is non-interactive, in case it should always be rendered centered\n show$.pipe(\n filter(active => active),\n withLatestFrom(node$, (_, node) => node),\n filter(node => node.role === \"tooltip\")\n )\n .subscribe(node => {\n const size = getElementSize(getElement(\":scope > *\", node))\n\n // Set tooltip width and remove tail by setting it to a width of zero -\n // if authors want to keep the tail, we can move this to CSS later\n node.style.setProperty(\"--md-tooltip-width\", `${size.width}px`)\n node.style.setProperty(\"--md-tooltip-tail\", `${0}px`)\n })\n\n // Update tooltip visibility - we defer to the next animation frame, because\n // the tooltip must first be added to the document before we make it appear,\n // or it will appear instantly without delay. Additionally, we need to keep\n // the tooltip visible for a short time after the pointer left the host.\n show$.pipe(\n distinctUntilChanged(),\n observeOn(animationFrameScheduler),\n withLatestFrom(node$)\n )\n .subscribe(([active, node]) => {\n node.classList.toggle(\"md-tooltip2--active\", active)\n })\n\n // Set up ARIA attributes when tooltip is visible\n combineLatest([\n show$.pipe(filter(active => active)),\n node$\n ])\n .subscribe(([_, node]) => {\n if (node.role === \"dialog\") {\n el.setAttribute(\"aria-controls\", id)\n el.setAttribute(\"aria-haspopup\", \"dialog\")\n } else {\n el.setAttribute(\"aria-describedby\", id)\n }\n })\n\n // Remove ARIA attributes when tooltip is hidden\n show$.pipe(filter(active => !active))\n .subscribe(() => {\n el.removeAttribute(\"aria-controls\")\n el.removeAttribute(\"aria-describedby\")\n el.removeAttribute(\"aria-haspopup\")\n })\n\n // Create and return component\n return watchTooltip2(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n\n// ----------------------------------------------------------------------------\n\n/**\n * Mount inline tooltip\n *\n * @todo refactor this function\n *\n * @param el - Tooltip host element\n * @param dependencies - Dependencies\n * @param container - Container\n *\n * @returns Tooltip component observable\n */\nexport function mountInlineTooltip2(\n el: HTMLElement, { viewport$ }: { viewport$: Observable<Viewport> },\n container = document.body\n): Observable<Component<Tooltip>> {\n return mountTooltip2(el, {\n content$: new Observable<HTMLElement>(observer => {\n const title = el.title\n const node = renderInlineTooltip2(title)\n observer.next(node)\n el.removeAttribute(\"title\")\n // Append tooltip and remove on unsubscription\n container.append(node)\n return () => {\n node.remove()\n el.setAttribute(\"title\", title)\n }\n }),\n viewport$\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n auditTime,\n combineLatest,\n debounceTime,\n defer,\n delay,\n endWith,\n filter,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n merge,\n switchMap,\n take,\n takeUntil,\n tap,\n throttleTime,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n ElementOffset,\n getActiveElement,\n getElementSize,\n watchElementContentOffset,\n watchElementFocus,\n watchElementOffset,\n watchElementVisibility\n} from \"~/browser\"\n\nimport { Component } from \"../../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Annotation\n */\nexport interface Annotation {\n active: boolean /* Annotation is active */\n offset: ElementOffset /* Annotation offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch annotation\n *\n * @param el - Annotation element\n * @param container - Containing element\n *\n * @returns Annotation observable\n */\nexport function watchAnnotation(\n el: HTMLElement, container: HTMLElement\n): Observable<Annotation> {\n const offset$ = defer(() => combineLatest([\n watchElementOffset(el),\n watchElementContentOffset(container)\n ]))\n .pipe(\n map(([{ x, y }, scroll]): ElementOffset => {\n const { width, height } = getElementSize(el)\n return ({\n x: x - scroll.x + width / 2,\n y: y - scroll.y + height / 2\n })\n })\n )\n\n /* Actively watch annotation on focus */\n return watchElementFocus(el)\n .pipe(\n switchMap(active => offset$\n .pipe(\n map(offset => ({ active, offset })),\n take(+!active || Infinity)\n )\n )\n )\n}\n\n/**\n * Mount annotation\n *\n * @param el - Annotation element\n * @param container - Containing element\n * @param options - Options\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotation(\n el: HTMLElement, container: HTMLElement, { target$ }: MountOptions\n): Observable<Component<Annotation>> {\n const [tooltip, index] = Array.from(el.children)\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<Annotation>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe({\n\n /* Handle emission */\n next({ offset }) {\n el.style.setProperty(\"--md-tooltip-x\", `${offset.x}px`)\n el.style.setProperty(\"--md-tooltip-y\", `${offset.y}px`)\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-tooltip-x\")\n el.style.removeProperty(\"--md-tooltip-y\")\n }\n })\n\n /* Start animation only when annotation is visible */\n watchElementVisibility(el)\n .pipe(\n takeUntil(done$)\n )\n .subscribe(visible => {\n el.toggleAttribute(\"data-md-visible\", visible)\n })\n\n /* Toggle tooltip presence to mitigate empty lines when copying */\n merge(\n push$.pipe(filter(({ active }) => active)),\n push$.pipe(debounceTime(250), filter(({ active }) => !active))\n )\n .subscribe({\n\n /* Handle emission */\n next({ active }) {\n if (active)\n el.prepend(tooltip)\n else\n tooltip.remove()\n },\n\n /* Handle complete */\n complete() {\n el.prepend(tooltip)\n }\n })\n\n /* Toggle tooltip visibility */\n push$\n .pipe(\n auditTime(16, animationFrameScheduler)\n )\n .subscribe(({ active }) => {\n tooltip.classList.toggle(\"md-tooltip--active\", active)\n })\n\n /* Track relative origin of tooltip */\n push$\n .pipe(\n throttleTime(125, animationFrameScheduler),\n filter(() => !!el.offsetParent),\n map(() => el.offsetParent!.getBoundingClientRect()),\n map(({ x }) => x)\n )\n .subscribe({\n\n /* Handle emission */\n next(origin) {\n if (origin)\n el.style.setProperty(\"--md-tooltip-0\", `${-origin}px`)\n else\n el.style.removeProperty(\"--md-tooltip-0\")\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-tooltip-0\")\n }\n })\n\n /* Allow to copy link without scrolling to anchor */\n fromEvent<MouseEvent>(index, \"click\")\n .pipe(\n takeUntil(done$),\n filter(ev => !(ev.metaKey || ev.ctrlKey))\n )\n .subscribe(ev => {\n ev.stopPropagation()\n ev.preventDefault()\n })\n\n /* Allow to open link in new tab or blur on close */\n fromEvent<MouseEvent>(index, \"mousedown\")\n .pipe(\n takeUntil(done$),\n withLatestFrom(push$)\n )\n .subscribe(([ev, { active }]) => {\n\n /* Open in new tab */\n if (ev.button !== 0 || ev.metaKey || ev.ctrlKey) {\n ev.preventDefault()\n\n /* Close annotation */\n } else if (active) {\n ev.preventDefault()\n\n /* Focus parent annotation, if any */\n const parent = el.parentElement!.closest(\".md-annotation\")\n if (parent instanceof HTMLElement)\n parent.focus()\n else\n getActiveElement()?.blur()\n }\n })\n\n /* Open and focus annotation on location target */\n target$\n .pipe(\n takeUntil(done$),\n filter(target => target === tooltip),\n delay(125)\n )\n .subscribe(() => el.focus())\n\n /* Create and return component */\n return watchAnnotation(el, container)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n endWith,\n finalize,\n ignoreElements,\n merge,\n share,\n takeUntil\n} from \"rxjs\"\n\nimport {\n getElement,\n getElements,\n getOptionalElement\n} from \"~/browser\"\nimport { renderAnnotation } from \"~/templates\"\n\nimport { Component } from \"../../../_\"\nimport {\n Annotation,\n mountAnnotation\n} from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find all annotation hosts in the containing element\n *\n * @param container - Containing element\n *\n * @returns Annotation hosts\n */\nfunction findHosts(container: HTMLElement): HTMLElement[] {\n return container.tagName === \"CODE\"\n ? getElements(\".c, .c1, .cm\", container)\n : [container]\n}\n\n/**\n * Find all annotation markers in the containing element\n *\n * @param container - Containing element\n *\n * @returns Annotation markers\n */\nfunction findMarkers(container: HTMLElement): Text[] {\n const markers: Text[] = []\n for (const el of findHosts(container)) {\n const nodes: Text[] = []\n\n /* Find all text nodes in current element */\n const it = document.createNodeIterator(el, NodeFilter.SHOW_TEXT)\n for (let node = it.nextNode(); node; node = it.nextNode())\n nodes.push(node as Text)\n\n /* Find all markers in each text node */\n for (let text of nodes) {\n let match: RegExpExecArray | null\n\n /* Split text at marker and add to list */\n while ((match = /(\\(\\d+\\))(!)?/.exec(text.textContent!))) {\n const [, id, force] = match\n if (typeof force === \"undefined\") {\n const marker = text.splitText(match.index)\n text = marker.splitText(id.length)\n markers.push(marker)\n\n /* Replace entire text with marker */\n } else {\n text.textContent = id\n markers.push(text)\n break\n }\n }\n }\n }\n return markers\n}\n\n/**\n * Swap the child nodes of two elements\n *\n * @param source - Source element\n * @param target - Target element\n */\nfunction swap(source: HTMLElement, target: HTMLElement): void {\n target.append(...Array.from(source.childNodes))\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount annotation list\n *\n * This function analyzes the containing code block and checks for markers\n * referring to elements in the given annotation list. If no markers are found,\n * the list is left untouched. Otherwise, list elements are rendered as\n * annotations inside the code block.\n *\n * @param el - Annotation list element\n * @param container - Containing element\n * @param options - Options\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotationList(\n el: HTMLElement, container: HTMLElement, { target$, print$ }: MountOptions\n): Observable<Component<Annotation>> {\n\n /* Compute prefix for tooltip anchors */\n const parent = container.closest(\"[id]\")\n const prefix = parent?.id\n\n /* Find and replace all markers with empty annotations */\n const annotations = new Map<string, HTMLElement>()\n for (const marker of findMarkers(container)) {\n const [, id] = marker.textContent!.match(/\\((\\d+)\\)/)!\n if (getOptionalElement(`:scope > li:nth-child(${id})`, el)) {\n annotations.set(id, renderAnnotation(id, prefix))\n marker.replaceWith(annotations.get(id)!)\n }\n }\n\n /* Keep list if there are no annotations to render */\n if (annotations.size === 0)\n return EMPTY\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n\n /* Retrieve container pairs for swapping */\n const pairs: [HTMLElement, HTMLElement][] = []\n for (const [id, annotation] of annotations)\n pairs.push([\n getElement(\".md-typeset\", annotation),\n getElement(`:scope > li:nth-child(${id})`, el)\n ])\n\n /* Handle print mode - see https://bit.ly/3rgPdpt */\n print$.pipe(takeUntil(done$))\n .subscribe(active => {\n el.hidden = !active\n\n /* Add class to discern list element */\n el.classList.toggle(\"md-annotation-list\", active)\n\n /* Show annotations in code block or list (print) */\n for (const [inner, child] of pairs)\n if (!active)\n swap(child, inner)\n else\n swap(inner, child)\n })\n\n /* Create and return component */\n return merge(...[...annotations]\n .map(([, annotation]) => (\n mountAnnotation(annotation, container, { target$ })\n ))\n )\n .pipe(\n finalize(() => push$.complete()),\n share()\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { EMPTY, Observable, defer } from \"rxjs\"\n\nimport { Component } from \"../../../_\"\nimport { Annotation } from \"../_\"\nimport { mountAnnotationList } from \"../list\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find list element directly following a block\n *\n * @param el - Annotation block element\n *\n * @returns List element or nothing\n */\nfunction findList(el: HTMLElement): HTMLElement | undefined {\n if (el.nextElementSibling) {\n const sibling = el.nextElementSibling as HTMLElement\n if (sibling.tagName === \"OL\")\n return sibling\n\n /* Skip empty paragraphs - see https://bit.ly/3r4ZJ2O */\n else if (sibling.tagName === \"P\" && !sibling.children.length)\n return findList(sibling)\n }\n\n /* Everything else */\n return undefined\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount annotation block\n *\n * @param el - Annotation block element\n * @param options - Options\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotationBlock(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Annotation>> {\n return defer(() => {\n const list = findList(el)\n return typeof list !== \"undefined\"\n ? mountAnnotationList(list, el, options)\n : EMPTY\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport ClipboardJS from \"clipboard\"\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n filter,\n finalize,\n map,\n mergeWith,\n switchMap,\n take,\n takeLast,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n getElementContentSize,\n getElements,\n watchElementSize,\n watchElementVisibility\n} from \"~/browser\"\nimport {\n Tooltip,\n mountInlineTooltip2\n} from \"~/components/tooltip2\"\nimport { renderClipboardButton } from \"~/templates\"\n\nimport { Component } from \"../../../_\"\nimport {\n Annotation,\n mountAnnotationList\n} from \"../../annotation\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Code block overflow\n */\nexport interface Overflow {\n scrollable: boolean /* Code block overflows */\n}\n\n/**\n * Code block\n */\nexport type CodeBlock =\n | Overflow\n | Annotation\n | Tooltip\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Global sequence number for code blocks\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find candidate list element directly following a code block\n *\n * @param el - Code block element\n *\n * @returns List element or nothing\n */\nfunction findCandidateList(el: HTMLElement): HTMLElement | undefined {\n if (el.nextElementSibling) {\n const sibling = el.nextElementSibling as HTMLElement\n if (sibling.tagName === \"OL\")\n return sibling\n\n /* Skip empty paragraphs - see https://bit.ly/3r4ZJ2O */\n else if (sibling.tagName === \"P\" && !sibling.children.length)\n return findCandidateList(sibling)\n }\n\n /* Everything else */\n return undefined\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch code block\n *\n * This function monitors size changes of the viewport, as well as switches of\n * content tabs with embedded code blocks, as both may trigger overflow.\n *\n * @param el - Code block element\n *\n * @returns Code block observable\n */\nexport function watchCodeBlock(\n el: HTMLElement\n): Observable<Overflow> {\n return watchElementSize(el)\n .pipe(\n map(({ width }) => {\n const content = getElementContentSize(el)\n return {\n scrollable: content.width > width\n }\n }),\n distinctUntilKeyChanged(\"scrollable\")\n )\n}\n\n/**\n * Mount code block\n *\n * This function ensures that an overflowing code block is focusable through\n * keyboard, so it can be scrolled without a mouse to improve on accessibility.\n * Furthermore, if code annotations are enabled, they are mounted if and only\n * if the code block is currently visible, e.g., not in a hidden content tab.\n *\n * Note that code blocks may be mounted eagerly or lazily. If they're mounted\n * lazily (on first visibility), code annotation anchor links will not work,\n * as they are evaluated on initial page load, and code annotations in general\n * might feel a little bumpier.\n *\n * @param el - Code block element\n * @param options - Options\n *\n * @returns Code block and annotation component observable\n */\nexport function mountCodeBlock(\n el: HTMLElement, options: MountOptions\n): Observable<Component<CodeBlock>> {\n const { matches: hover } = matchMedia(\"(hover)\")\n\n /* Defer mounting of code block - see https://bit.ly/3vHVoVD */\n const factory$ = defer(() => {\n const push$ = new Subject<Overflow>()\n const done$ = push$.pipe(takeLast(1))\n push$.subscribe(({ scrollable }) => {\n if (scrollable && hover)\n el.setAttribute(\"tabindex\", \"0\")\n else\n el.removeAttribute(\"tabindex\")\n })\n\n /* Render button for Clipboard.js integration */\n const content$: Array<Observable<Component<CodeBlock>>> = []\n if (ClipboardJS.isSupported()) {\n if (el.closest(\".copy\") || (\n feature(\"content.code.copy\") && !el.closest(\".no-copy\")\n )) {\n const parent = el.closest(\"pre\")!\n parent.id = `__code_${sequence++}`\n\n /* Mount tooltip, if enabled */\n const button = renderClipboardButton(parent.id)\n parent.insertBefore(button, el)\n if (feature(\"content.tooltips\"))\n content$.push(mountInlineTooltip2(button, { viewport$ }))\n }\n }\n\n /* Handle code annotations */\n const container = el.closest(\".highlight\")\n if (container instanceof HTMLElement) {\n const list = findCandidateList(container)\n\n /* Mount code annotations, if enabled */\n if (typeof list !== \"undefined\" && (\n container.classList.contains(\"annotate\") ||\n feature(\"content.code.annotate\")\n )) {\n const annotations$ = mountAnnotationList(list, el, options)\n content$.push(\n watchElementSize(container)\n .pipe(\n takeUntil(done$),\n map(({ width, height }) => width && height),\n distinctUntilChanged(),\n switchMap(active => active ? annotations$ : EMPTY)\n )\n )\n }\n }\n\n // If the code block has line spans, we can add this additional class to\n // the code block element, which fixes the problem for highlighted code\n // lines not stretching to the entirety of the screen when the code block\n // overflows, e.g., on mobile - see\n const spans = getElements(\":scope > span[id]\", el)\n if (spans.length)\n el.classList.add(\"md-code__content\")\n\n /* Create and return component */\n return watchCodeBlock(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state })),\n mergeWith(...content$)\n )\n })\n\n /* Mount code block lazily */\n if (feature(\"content.lazy\"))\n return watchElementVisibility(el)\n .pipe(\n filter(visible => visible),\n take(1),\n switchMap(() => factory$)\n )\n\n /* Mount code block */\n return factory$\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n filter,\n finalize,\n map,\n merge,\n tap\n} from \"rxjs\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Details\n */\nexport interface Details {\n action: \"open\" | \"close\" /* Details state */\n reveal?: boolean /* Details is revealed */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch details\n *\n * @param el - Details element\n * @param options - Options\n *\n * @returns Details observable\n */\nexport function watchDetails(\n el: HTMLDetailsElement, { target$, print$ }: WatchOptions\n): Observable<Details> {\n let open = true\n return merge(\n\n /* Open and focus details on location target */\n target$\n .pipe(\n map(target => target.closest(\"details:not([open])\")!),\n filter(details => el === details),\n map(() => ({\n action: \"open\", reveal: true\n }) as Details)\n ),\n\n /* Open details on print and close afterwards */\n print$\n .pipe(\n filter(active => active || !open),\n tap(() => open = el.open),\n map(active => ({\n action: active ? \"open\" : \"close\"\n }) as Details)\n )\n )\n}\n\n/**\n * Mount details\n *\n * This function ensures that `details` tags are opened on anchor jumps and\n * prior to printing, so the whole content of the page is visible.\n *\n * @param el - Details element\n * @param options - Options\n *\n * @returns Details component observable\n */\nexport function mountDetails(\n el: HTMLDetailsElement, options: MountOptions\n): Observable<Component<Details>> {\n return defer(() => {\n const push$ = new Subject<Details>()\n push$.subscribe(({ action, reveal }) => {\n el.toggleAttribute(\"open\", action === \"open\")\n if (reveal)\n el.scrollIntoView()\n })\n\n /* Create and return component */\n return watchDetails(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", ".node circle,.node ellipse,.node path,.node polygon,.node rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}marker{fill:var(--md-mermaid-edge-color)!important}.edgeLabel .label rect{fill:#0000}.flowchartTitleText{fill:var(--md-mermaid-label-fg-color)}.label{color:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.label foreignObject{line-height:normal;overflow:visible}.label div .edgeLabel{color:var(--md-mermaid-label-fg-color)}.edgeLabel,.edgeLabel p,.label div .edgeLabel{background-color:var(--md-mermaid-label-bg-color)}.edgeLabel,.edgeLabel p{fill:var(--md-mermaid-label-bg-color);color:var(--md-mermaid-edge-color)}.edgePath .path,.flowchart-link{stroke:var(--md-mermaid-edge-color);stroke-width:.05rem}.edgePath .arrowheadPath{fill:var(--md-mermaid-edge-color);stroke:none}.cluster rect{fill:var(--md-default-fg-color--lightest);stroke:var(--md-default-fg-color--lighter)}.cluster span{color:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}g #flowchart-circleEnd,g #flowchart-circleStart,g #flowchart-crossEnd,g #flowchart-crossStart,g #flowchart-pointEnd,g #flowchart-pointStart{stroke:none}.classDiagramTitleText{fill:var(--md-mermaid-label-fg-color)}g.classGroup line,g.classGroup rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}g.classGroup text{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.classLabel .box{fill:var(--md-mermaid-label-bg-color);background-color:var(--md-mermaid-label-bg-color);opacity:1}.classLabel .label{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.node .divider{stroke:var(--md-mermaid-node-fg-color)}.relation{stroke:var(--md-mermaid-edge-color)}.cardinality{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.cardinality text{fill:inherit!important}defs #classDiagram-compositionEnd,defs #classDiagram-compositionStart,defs #classDiagram-dependencyEnd,defs #classDiagram-dependencyStart,defs #classDiagram-extensionEnd,defs #classDiagram-extensionStart{fill:var(--md-mermaid-edge-color)!important;stroke:var(--md-mermaid-edge-color)!important}defs #classDiagram-aggregationEnd,defs #classDiagram-aggregationStart{fill:var(--md-mermaid-label-bg-color)!important;stroke:var(--md-mermaid-edge-color)!important}.statediagramTitleText{fill:var(--md-mermaid-label-fg-color)}g.stateGroup rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}g.stateGroup .state-title{fill:var(--md-mermaid-label-fg-color)!important;font-family:var(--md-mermaid-font-family)}g.stateGroup .composit{fill:var(--md-mermaid-label-bg-color)}.nodeLabel,.nodeLabel p{color:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}a .nodeLabel{text-decoration:underline}.node circle.state-end,.node circle.state-start,.start-state{fill:var(--md-mermaid-edge-color);stroke:none}.end-state-inner,.end-state-outer{fill:var(--md-mermaid-edge-color)}.end-state-inner,.node circle.state-end{stroke:var(--md-mermaid-label-bg-color)}.transition{stroke:var(--md-mermaid-edge-color)}[id^=state-fork] rect,[id^=state-join] rect{fill:var(--md-mermaid-edge-color)!important;stroke:none!important}.statediagram-cluster.statediagram-cluster .inner{fill:var(--md-default-bg-color)}.statediagram-cluster rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}.statediagram-state rect.divider{fill:var(--md-default-fg-color--lightest);stroke:var(--md-default-fg-color--lighter)}defs #statediagram-barbEnd{stroke:var(--md-mermaid-edge-color)}.entityTitleText{fill:var(--md-mermaid-label-fg-color)}.attributeBoxEven,.attributeBoxOdd{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}.entityBox{fill:var(--md-mermaid-label-bg-color);stroke:var(--md-mermaid-node-fg-color)}.entityLabel{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.relationshipLabelBox{fill:var(--md-mermaid-label-bg-color);fill-opacity:1;background-color:var(--md-mermaid-label-bg-color);opacity:1}.relationshipLabel{fill:var(--md-mermaid-label-fg-color)}.relationshipLine{stroke:var(--md-mermaid-edge-color)}defs #ONE_OR_MORE_END *,defs #ONE_OR_MORE_START *,defs #ONLY_ONE_END *,defs #ONLY_ONE_START *,defs #ZERO_OR_MORE_END *,defs #ZERO_OR_MORE_START *,defs #ZERO_OR_ONE_END *,defs #ZERO_OR_ONE_START *{stroke:var(--md-mermaid-edge-color)!important}defs #ZERO_OR_MORE_END circle,defs #ZERO_OR_MORE_START circle{fill:var(--md-mermaid-label-bg-color)}text:not([class]):last-child{fill:var(--md-mermaid-label-fg-color)}.actor{fill:var(--md-mermaid-sequence-actor-bg-color);stroke:var(--md-mermaid-sequence-actor-border-color)}text.actor>tspan{fill:var(--md-mermaid-sequence-actor-fg-color);font-family:var(--md-mermaid-font-family)}line{stroke:var(--md-mermaid-sequence-actor-line-color)}.actor-man circle,.actor-man line{fill:var(--md-mermaid-sequence-actorman-bg-color);stroke:var(--md-mermaid-sequence-actorman-line-color)}.messageLine0,.messageLine1{stroke:var(--md-mermaid-sequence-message-line-color)}.note{fill:var(--md-mermaid-sequence-note-bg-color);stroke:var(--md-mermaid-sequence-note-border-color)}.loopText,.loopText>tspan,.messageText,.noteText>tspan{stroke:none;font-family:var(--md-mermaid-font-family)!important}.messageText{fill:var(--md-mermaid-sequence-message-fg-color)}.loopText,.loopText>tspan{fill:var(--md-mermaid-sequence-loop-fg-color)}.noteText>tspan{fill:var(--md-mermaid-sequence-note-fg-color)}#arrowhead path{fill:var(--md-mermaid-sequence-message-line-color);stroke:none}.loopLine{fill:var(--md-mermaid-sequence-loop-bg-color);stroke:var(--md-mermaid-sequence-loop-border-color)}.labelBox{fill:var(--md-mermaid-sequence-label-bg-color);stroke:none}.labelText,.labelText>span{fill:var(--md-mermaid-sequence-label-fg-color);font-family:var(--md-mermaid-font-family)}.sequenceNumber{fill:var(--md-mermaid-sequence-number-fg-color)}rect.rect{fill:var(--md-mermaid-sequence-box-bg-color);stroke:none}rect.rect+text.text{fill:var(--md-mermaid-sequence-box-fg-color)}defs #sequencenumber{fill:var(--md-mermaid-sequence-number-bg-color)!important}", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n map,\n of,\n shareReplay,\n tap\n} from \"rxjs\"\n\nimport { watchScript } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\nimport themeCSS from \"./index.css\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mermaid diagram\n */\nexport interface Mermaid {}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Mermaid instance observable\n */\nlet mermaid$: Observable<void>\n\n/**\n * Global sequence number for diagrams\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch Mermaid script\n *\n * @returns Mermaid scripts observable\n */\nfunction fetchScripts(): Observable<void> {\n return typeof mermaid === \"undefined\" || mermaid instanceof Element\n ? watchScript(\"https://unpkg.com/mermaid@11/dist/mermaid.min.js\")\n : of(undefined)\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount Mermaid diagram\n *\n * @param el - Code block element\n *\n * @returns Mermaid diagram component observable\n */\nexport function mountMermaid(\n el: HTMLElement\n): Observable<Component<Mermaid>> {\n el.classList.remove(\"mermaid\") // Hack: mitigate https://bit.ly/3CiN6Du\n mermaid$ ||= fetchScripts()\n .pipe(\n tap(() => mermaid.initialize({\n startOnLoad: false,\n themeCSS,\n sequence: {\n actorFontSize: \"16px\", // Hack: mitigate https://bit.ly/3y0NEi3\n messageFontSize: \"16px\",\n noteFontSize: \"16px\"\n }\n })),\n map(() => undefined),\n shareReplay(1)\n )\n\n /* Render diagram */\n mermaid$.subscribe(async () => {\n el.classList.add(\"mermaid\") // Hack: mitigate https://bit.ly/3CiN6Du\n const id = `__mermaid_${sequence++}`\n\n /* Create host element to replace code block */\n const host = h(\"div\", { class: \"mermaid\" })\n const text = el.textContent\n\n /* Render and inject diagram */\n const { svg, fn } = await mermaid.render(id, text)\n\n /* Create a shadow root and inject diagram */\n const shadow = host.attachShadow({ mode: \"closed\" })\n shadow.innerHTML = svg\n\n /* Replace code block with diagram and bind functions */\n el.replaceWith(host)\n fn?.(shadow)\n })\n\n /* Create and return component */\n return mermaid$\n .pipe(\n map(() => ({ ref: el }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Observable, of } from \"rxjs\"\n\nimport { renderTable } from \"~/templates\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Data table\n */\nexport interface DataTable {}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Sentinel for replacement\n */\nconst sentinel = h(\"table\")\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount data table\n *\n * This function wraps a data table in another scrollable container, so it can\n * be smoothly scrolled on smaller screen sizes and won't break the layout.\n *\n * @param el - Data table element\n *\n * @returns Data table component observable\n */\nexport function mountDataTable(\n el: HTMLElement\n): Observable<Component<DataTable>> {\n el.replaceWith(sentinel)\n sentinel.replaceWith(renderTable(el))\n\n /* Create and return component */\n return of({ ref: el })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n asyncScheduler,\n auditTime,\n combineLatest,\n defer,\n endWith,\n filter,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n merge,\n skip,\n startWith,\n subscribeOn,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElement,\n getElementContentOffset,\n getElementContentSize,\n getElementOffset,\n getElementSize,\n getElements,\n watchElementContentOffset,\n watchElementSize,\n watchElementVisibility\n} from \"~/browser\"\nimport { renderTabbedControl } from \"~/templates\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Content tabs\n */\nexport interface ContentTabs {\n active: HTMLLabelElement /* Active tab label */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch content tabs\n *\n * @param inputs - Content tabs input elements\n *\n * @returns Content tabs observable\n */\nexport function watchContentTabs(\n inputs: HTMLInputElement[]\n): Observable<ContentTabs> {\n const initial = inputs.find(input => input.checked) || inputs[0]\n return merge(...inputs.map(input => fromEvent(input, \"change\")\n .pipe(\n map(() => getElement<HTMLLabelElement>(`label[for=\"${input.id}\"]`))\n )\n ))\n .pipe(\n startWith(getElement<HTMLLabelElement>(`label[for=\"${initial.id}\"]`)),\n map(active => ({ active }))\n )\n}\n\n/**\n * Mount content tabs\n *\n * @param el - Content tabs element\n * @param options - Options\n *\n * @returns Content tabs component observable\n */\nexport function mountContentTabs(\n el: HTMLElement, { viewport$, target$ }: MountOptions\n): Observable<Component<ContentTabs>> {\n const container = getElement(\".tabbed-labels\", el)\n const inputs = getElements<HTMLInputElement>(\":scope > input\", el)\n\n /* Render content tab previous button for pagination */\n const prev = renderTabbedControl(\"prev\")\n el.append(prev)\n\n /* Render content tab next button for pagination */\n const next = renderTabbedControl(\"next\")\n el.append(next)\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<ContentTabs>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n combineLatest([push$, watchElementSize(el), watchElementVisibility(el)])\n .pipe(\n takeUntil(done$),\n auditTime(1, animationFrameScheduler)\n )\n .subscribe({\n\n /* Handle emission */\n next([{ active }, size]) {\n const offset = getElementOffset(active)\n const { width } = getElementSize(active)\n\n /* Set tab indicator offset and width */\n el.style.setProperty(\"--md-indicator-x\", `${offset.x}px`)\n el.style.setProperty(\"--md-indicator-width\", `${width}px`)\n\n /* Scroll container to active content tab */\n const content = getElementContentOffset(container)\n if (\n offset.x < content.x ||\n offset.x + width > content.x + size.width\n )\n container.scrollTo({\n left: Math.max(0, offset.x - 16),\n behavior: \"smooth\"\n })\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-indicator-x\")\n el.style.removeProperty(\"--md-indicator-width\")\n }\n })\n\n /* Hide content tab buttons on borders */\n combineLatest([\n watchElementContentOffset(container),\n watchElementSize(container)\n ])\n .pipe(\n takeUntil(done$)\n )\n .subscribe(([offset, size]) => {\n const content = getElementContentSize(container)\n prev.hidden = offset.x < 16\n next.hidden = offset.x > content.width - size.width - 16\n })\n\n /* Paginate content tab container on click */\n merge(\n fromEvent(prev, \"click\").pipe(map(() => -1)),\n fromEvent(next, \"click\").pipe(map(() => +1))\n )\n .pipe(\n takeUntil(done$)\n )\n .subscribe(direction => {\n const { width } = getElementSize(container)\n container.scrollBy({\n left: width * direction,\n behavior: \"smooth\"\n })\n })\n\n /* Switch to content tab target */\n target$\n .pipe(\n takeUntil(done$),\n filter(input => inputs.includes(input as HTMLInputElement))\n )\n .subscribe(input => input.click())\n\n /* Add link to each content tab label */\n container.classList.add(\"tabbed-labels--linked\")\n for (const input of inputs) {\n const label = getElement<HTMLLabelElement>(`label[for=\"${input.id}\"]`)\n label.replaceChildren(h(\"a\", {\n href: `#${label.htmlFor}`,\n tabIndex: -1\n }, ...Array.from(label.childNodes)))\n\n /* Allow to copy link without scrolling to anchor */\n fromEvent<MouseEvent>(label.firstElementChild!, \"click\")\n .pipe(\n takeUntil(done$),\n filter(ev => !(ev.metaKey || ev.ctrlKey)),\n tap(ev => {\n ev.preventDefault()\n ev.stopPropagation()\n })\n )\n // @todo we might need to remove the anchor link on complete\n .subscribe(() => {\n history.replaceState({}, \"\", `#${label.htmlFor}`)\n label.click()\n })\n }\n\n /* Set up linking of content tabs, if enabled */\n if (feature(\"content.tabs.link\"))\n push$.pipe(\n skip(1),\n withLatestFrom(viewport$)\n )\n .subscribe(([{ active }, { offset }]) => {\n const tab = active.innerText.trim()\n if (active.hasAttribute(\"data-md-switching\")) {\n active.removeAttribute(\"data-md-switching\")\n\n /* Determine viewport offset of active tab */\n } else {\n const y = el.offsetTop - offset.y\n\n /* Passively activate other tabs */\n for (const set of getElements(\"[data-tabs]\"))\n for (const input of getElements<HTMLInputElement>(\n \":scope > input\", set\n )) {\n const label = getElement(`label[for=\"${input.id}\"]`)\n if (\n label !== active &&\n label.innerText.trim() === tab\n ) {\n label.setAttribute(\"data-md-switching\", \"\")\n input.click()\n break\n }\n }\n\n /* Bring active tab into view */\n window.scrollTo({\n top: el.offsetTop - y\n })\n\n /* Persist active tabs in local storage */\n const tabs = __md_get<string[]>(\"__tabs\") || []\n __md_set(\"__tabs\", [...new Set([tab, ...tabs])])\n }\n })\n\n /* Pause media (audio, video) on switch - see https://bit.ly/3Bk6cel */\n push$.pipe(takeUntil(done$))\n .subscribe(() => {\n for (const media of getElements<HTMLAudioElement>(\"audio, video\", el))\n media.pause()\n })\n\n /* Create and return component */\n return watchContentTabs(inputs)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n .pipe(\n subscribeOn(asyncScheduler)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Observable, merge } from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { Viewport, getElements } from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport {\n Tooltip,\n mountInlineTooltip2\n} from \"../../tooltip2\"\nimport {\n Annotation,\n mountAnnotationBlock\n} from \"../annotation\"\nimport {\n CodeBlock,\n mountCodeBlock\n} from \"../code\"\nimport {\n Details,\n mountDetails\n} from \"../details\"\nimport {\n Mermaid,\n mountMermaid\n} from \"../mermaid\"\nimport {\n DataTable,\n mountDataTable\n} from \"../table\"\nimport {\n ContentTabs,\n mountContentTabs\n} from \"../tabs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Content\n */\nexport type Content =\n | Annotation\n | CodeBlock\n | ContentTabs\n | DataTable\n | Details\n | Mermaid\n | Tooltip\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount content\n *\n * This function mounts all components that are found in the content of the\n * actual article, including code blocks, data tables and details.\n *\n * @param el - Content element\n * @param options - Options\n *\n * @returns Content component observable\n */\nexport function mountContent(\n el: HTMLElement, { viewport$, target$, print$ }: MountOptions\n): Observable<Component<Content>> {\n return merge(\n\n /* Annotations */\n ...getElements(\".annotate:not(.highlight)\", el)\n .map(child => mountAnnotationBlock(child, { target$, print$ })),\n\n /* Code blocks */\n ...getElements(\"pre:not(.mermaid) > code\", el)\n .map(child => mountCodeBlock(child, { target$, print$ })),\n\n /* Mermaid diagrams */\n ...getElements(\"pre.mermaid\", el)\n .map(child => mountMermaid(child)),\n\n /* Data tables */\n ...getElements(\"table:not([class])\", el)\n .map(child => mountDataTable(child)),\n\n /* Details */\n ...getElements(\"details\", el)\n .map(child => mountDetails(child, { target$, print$ })),\n\n /* Content tabs */\n ...getElements(\"[data-tabs]\", el)\n .map(child => mountContentTabs(child, { viewport$, target$ })),\n\n /* Tooltips */\n ...getElements(\"[title]\", el)\n .filter(() => feature(\"content.tooltips\"))\n .map(child => mountInlineTooltip2(child, { viewport$ }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n delay,\n finalize,\n map,\n merge,\n of,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { getElement } from \"~/browser\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Dialog\n */\nexport interface Dialog {\n message: string /* Dialog message */\n active: boolean /* Dialog is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n alert$: Subject<string> /* Alert subject */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n alert$: Subject<string> /* Alert subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch dialog\n *\n * @param _el - Dialog element\n * @param options - Options\n *\n * @returns Dialog observable\n */\nexport function watchDialog(\n _el: HTMLElement, { alert$ }: WatchOptions\n): Observable<Dialog> {\n return alert$\n .pipe(\n switchMap(message => merge(\n of(true),\n of(false).pipe(delay(2000))\n )\n .pipe(\n map(active => ({ message, active }))\n )\n )\n )\n}\n\n/**\n * Mount dialog\n *\n * This function reveals the dialog in the right corner when a new alert is\n * emitted through the subject that is passed as part of the options.\n *\n * @param el - Dialog element\n * @param options - Options\n *\n * @returns Dialog component observable\n */\nexport function mountDialog(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Dialog>> {\n const inner = getElement(\".md-typeset\", el)\n return defer(() => {\n const push$ = new Subject<Dialog>()\n push$.subscribe(({ message, active }) => {\n el.classList.toggle(\"md-dialog--active\", active)\n inner.textContent = message\n })\n\n /* Create and return component */\n return watchDialog(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n animationFrameScheduler,\n asyncScheduler,\n auditTime,\n combineLatest,\n debounceTime,\n defer,\n distinctUntilChanged,\n filter,\n finalize,\n map,\n merge,\n of,\n subscribeOn,\n tap,\n throttleTime\n} from \"rxjs\"\n\nimport {\n ElementOffset,\n getElement,\n getElementContainer,\n getElementOffset,\n getElementSize,\n watchElementContentOffset,\n watchElementFocus,\n watchElementHover\n} from \"~/browser\"\nimport { renderTooltip } from \"~/templates\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tooltip\n */\nexport interface Tooltip {\n active: boolean /* Tooltip is active */\n offset: ElementOffset /* Tooltip offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Global sequence number for tooltips\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch tooltip\n *\n * This function will append the tooltip temporarily to compute its width,\n * which is necessary for correct centering, and then removing it again.\n *\n * @param el - Tooltip element\n * @param host - Host element\n *\n * @returns Tooltip observable\n */\nexport function watchTooltip(\n el: HTMLElement, host: HTMLElement\n): Observable<Tooltip> {\n document.body.append(el)\n\n /* Compute width and remove tooltip immediately */\n const { width } = getElementSize(el)\n el.style.setProperty(\"--md-tooltip-width\", `${width}px`)\n el.remove()\n\n /* Retrieve and watch containing element */\n const container = getElementContainer(host)\n const scroll$ =\n typeof container !== \"undefined\"\n ? watchElementContentOffset(container)\n : of({ x: 0, y: 0 })\n\n /* Compute tooltip visibility */\n const active$ = merge(\n watchElementFocus(host),\n watchElementHover(host)\n )\n .pipe(\n distinctUntilChanged()\n )\n\n /* Compute tooltip offset */\n return combineLatest([active$, scroll$])\n .pipe(\n map(([active, scroll]) => {\n let { x, y } = getElementOffset(host)\n const size = getElementSize(host)\n\n /**\n * Experimental: fix handling of tables - see https://bit.ly/3TQEj5O\n *\n * If this proves to be a viable fix, we should refactor tooltip\n * positioning and somehow streamline the current process. This might\n * also fix positioning for annotations inside tables, which is another\n * limitation.\n */\n const table = host.closest(\"table\")\n if (table && host.parentElement) {\n x += table.offsetLeft + host.parentElement.offsetLeft\n y += table.offsetTop + host.parentElement.offsetTop\n }\n return {\n active,\n offset: {\n x: x - scroll.x + size.width / 2 - width / 2,\n y: y - scroll.y + size.height + 8\n }\n }\n })\n )\n}\n\n/**\n * Mount tooltip\n *\n * @param el - Host element\n *\n * @returns Tooltip component observable\n */\nexport function mountTooltip(\n el: HTMLElement\n): Observable<Component<Tooltip>> {\n const title = el.title\n if (!title.length)\n return EMPTY\n\n /* Render tooltip and set title from host element */\n const id = `__tooltip_${sequence++}`\n const tooltip = renderTooltip(id, \"inline\")\n const typeset = getElement(\".md-typeset\", tooltip)\n typeset.innerHTML = title\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<Tooltip>()\n push$.subscribe({\n\n /* Handle emission */\n next({ offset }) {\n tooltip.style.setProperty(\"--md-tooltip-x\", `${offset.x}px`)\n tooltip.style.setProperty(\"--md-tooltip-y\", `${offset.y}px`)\n },\n\n /* Handle complete */\n complete() {\n tooltip.style.removeProperty(\"--md-tooltip-x\")\n tooltip.style.removeProperty(\"--md-tooltip-y\")\n }\n })\n\n /* Toggle tooltip presence to mitigate empty lines when copying */\n merge(\n push$.pipe(filter(({ active }) => active)),\n push$.pipe(debounceTime(250), filter(({ active }) => !active))\n )\n .subscribe({\n\n /* Handle emission */\n next({ active }) {\n if (active) {\n el.insertAdjacentElement(\"afterend\", tooltip)\n el.setAttribute(\"aria-describedby\", id)\n el.removeAttribute(\"title\")\n } else {\n tooltip.remove()\n el.removeAttribute(\"aria-describedby\")\n el.setAttribute(\"title\", title)\n }\n },\n\n /* Handle complete */\n complete() {\n tooltip.remove()\n el.removeAttribute(\"aria-describedby\")\n el.setAttribute(\"title\", title)\n }\n })\n\n /* Toggle tooltip visibility */\n push$\n .pipe(\n auditTime(16, animationFrameScheduler)\n )\n .subscribe(({ active }) => {\n tooltip.classList.toggle(\"md-tooltip--active\", active)\n })\n\n // @todo - refactor positioning together with annotations \u2013 there are\n // several things that overlap and are identical in handling\n\n /* Track relative origin of tooltip */\n push$\n .pipe(\n throttleTime(125, animationFrameScheduler),\n filter(() => !!el.offsetParent),\n map(() => el.offsetParent!.getBoundingClientRect()),\n map(({ x }) => x)\n )\n .subscribe({\n\n /* Handle emission */\n next(origin) {\n if (origin)\n tooltip.style.setProperty(\"--md-tooltip-0\", `${-origin}px`)\n else\n tooltip.style.removeProperty(\"--md-tooltip-0\")\n },\n\n /* Handle complete */\n complete() {\n tooltip.style.removeProperty(\"--md-tooltip-0\")\n }\n })\n\n /* Create and return component */\n return watchTooltip(tooltip, el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n .pipe(\n subscribeOn(asyncScheduler)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n combineLatest,\n combineLatestWith,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n filter,\n from,\n ignoreElements,\n map,\n mergeMap,\n mergeWith,\n of,\n shareReplay,\n startWith,\n switchMap,\n takeUntil\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElements,\n watchElementSize,\n watchToggle\n} from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { Main } from \"../../main\"\nimport {\n Tooltip,\n mountTooltip\n} from \"../../tooltip\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Header\n */\nexport interface Header {\n height: number /* Header visible height */\n hidden: boolean /* Header is hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Compute whether the header is hidden\n *\n * If the user scrolls past a certain threshold, the header can be hidden when\n * scrolling down, and shown when scrolling up.\n *\n * @param options - Options\n *\n * @returns Toggle observable\n */\nfunction isHidden({ viewport$ }: WatchOptions): Observable<boolean> {\n if (!feature(\"header.autohide\"))\n return of(false)\n\n /* Compute direction and turning point */\n const direction$ = viewport$\n .pipe(\n map(({ offset: { y } }) => y),\n bufferCount(2, 1),\n map(([a, b]) => [a < b, b] as const),\n distinctUntilKeyChanged(0)\n )\n\n /* Compute whether header should be hidden */\n const hidden$ = combineLatest([viewport$, direction$])\n .pipe(\n filter(([{ offset }, [, y]]) => Math.abs(y - offset.y) > 100),\n map(([, [direction]]) => direction),\n distinctUntilChanged()\n )\n\n /* Compute threshold for hiding */\n const search$ = watchToggle(\"search\")\n return combineLatest([viewport$, search$])\n .pipe(\n map(([{ offset }, search]) => offset.y > 400 && !search),\n distinctUntilChanged(),\n switchMap(active => active ? hidden$ : of(false)),\n startWith(false)\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch header\n *\n * @param el - Header element\n * @param options - Options\n *\n * @returns Header observable\n */\nexport function watchHeader(\n el: HTMLElement, options: WatchOptions\n): Observable<Header> {\n return defer(() => combineLatest([\n watchElementSize(el),\n isHidden(options)\n ]))\n .pipe(\n map(([{ height }, hidden]) => ({\n height,\n hidden\n })),\n distinctUntilChanged((a, b) => (\n a.height === b.height &&\n a.hidden === b.hidden\n )),\n shareReplay(1)\n )\n}\n\n/**\n * Mount header\n *\n * This function manages the different states of the header, i.e. whether it's\n * hidden or rendered with a shadow. This depends heavily on the main area.\n *\n * @param el - Header element\n * @param options - Options\n *\n * @returns Header component observable\n */\nexport function mountHeader(\n el: HTMLElement, { header$, main$ }: MountOptions\n): Observable<Component<Header | Tooltip>> {\n return defer(() => {\n const push$ = new Subject<Main>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$\n .pipe(\n distinctUntilKeyChanged(\"active\"),\n combineLatestWith(header$)\n )\n .subscribe(([{ active }, { hidden }]) => {\n el.classList.toggle(\"md-header--shadow\", active && !hidden)\n el.hidden = hidden\n })\n\n /* Mount tooltips, if enabled */\n const tooltips = from(getElements(\"[title]\", el))\n .pipe(\n filter(() => feature(\"content.tooltips\")),\n mergeMap(child => mountTooltip(child))\n )\n\n /* Link to main area */\n main$.subscribe(push$)\n\n /* Create and return component */\n return header$\n .pipe(\n takeUntil(done$),\n map(state => ({ ref: el, ...state })),\n mergeWith(tooltips.pipe(takeUntil(done$)))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n distinctUntilKeyChanged,\n finalize,\n map,\n tap\n} from \"rxjs\"\n\nimport {\n Viewport,\n getElementSize,\n getOptionalElement,\n watchViewportAt\n} from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { Header } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Header\n */\nexport interface HeaderTitle {\n active: boolean /* Header title is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch header title\n *\n * @param el - Heading element\n * @param options - Options\n *\n * @returns Header title observable\n */\nexport function watchHeaderTitle(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<HeaderTitle> {\n return watchViewportAt(el, { viewport$, header$ })\n .pipe(\n map(({ offset: { y } }) => {\n const { height } = getElementSize(el)\n return {\n active: y >= height\n }\n }),\n distinctUntilKeyChanged(\"active\")\n )\n}\n\n/**\n * Mount header title\n *\n * This function swaps the header title from the site title to the title of the\n * current page when the user scrolls past the first headline.\n *\n * @param el - Header title element\n * @param options - Options\n *\n * @returns Header title component observable\n */\nexport function mountHeaderTitle(\n el: HTMLElement, options: MountOptions\n): Observable<Component<HeaderTitle>> {\n return defer(() => {\n const push$ = new Subject<HeaderTitle>()\n push$.subscribe({\n\n /* Handle emission */\n next({ active }) {\n el.classList.toggle(\"md-header__title--active\", active)\n },\n\n /* Handle complete */\n complete() {\n el.classList.remove(\"md-header__title--active\")\n }\n })\n\n /* Obtain headline, if any */\n const heading = getOptionalElement(\".md-content h1\")\n if (typeof heading === \"undefined\")\n return EMPTY\n\n /* Create and return component */\n return watchHeaderTitle(heading, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n map,\n switchMap\n} from \"rxjs\"\n\nimport {\n Viewport,\n watchElementSize\n} from \"~/browser\"\n\nimport { Header } from \"../header\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Main area\n */\nexport interface Main {\n offset: number /* Main area top offset */\n height: number /* Main area visible height */\n active: boolean /* Main area is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch main area\n *\n * This function returns an observable that computes the visual parameters of\n * the main area which depends on the viewport vertical offset and height, as\n * well as the height of the header element, if the header is fixed.\n *\n * @param el - Main area element\n * @param options - Options\n *\n * @returns Main area observable\n */\nexport function watchMain(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<Main> {\n\n /* Compute necessary adjustment for header */\n const adjust$ = header$\n .pipe(\n map(({ height }) => height),\n distinctUntilChanged()\n )\n\n /* Compute the main area's top and bottom borders */\n const border$ = adjust$\n .pipe(\n switchMap(() => watchElementSize(el)\n .pipe(\n map(({ height }) => ({\n top: el.offsetTop,\n bottom: el.offsetTop + height\n })),\n distinctUntilKeyChanged(\"bottom\")\n )\n )\n )\n\n /* Compute the main area's offset, visible height and if we scrolled past */\n return combineLatest([adjust$, border$, viewport$])\n .pipe(\n map(([header, { top, bottom }, { offset: { y }, size: { height } }]) => {\n height = Math.max(0, height\n - Math.max(0, top - y, header)\n - Math.max(0, height + y - bottom)\n )\n return {\n offset: top - header,\n height,\n active: top - header <= y\n }\n }),\n distinctUntilChanged((a, b) => (\n a.offset === b.offset &&\n a.height === b.height &&\n a.active === b.active\n ))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n defer,\n filter,\n finalize,\n fromEvent,\n map,\n mergeMap,\n observeOn,\n of,\n repeat,\n shareReplay,\n skip,\n startWith,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { getElements, watchMedia } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\nimport {\n Component,\n getComponentElement\n} from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Palette colors\n */\nexport interface PaletteColor {\n media?: string /* Media query */\n scheme?: string /* Color scheme */\n primary?: string /* Primary color */\n accent?: string /* Accent color */\n}\n\n/**\n * Palette\n */\nexport interface Palette {\n index: number /* Palette index */\n color: PaletteColor /* Palette colors */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch color palette\n *\n * @param inputs - Color palette element\n *\n * @returns Color palette observable\n */\nexport function watchPalette(\n inputs: HTMLInputElement[]\n): Observable<Palette> {\n const current = __md_get<Palette>(\"__palette\") || {\n index: inputs.findIndex(input => matchMedia(\n input.getAttribute(\"data-md-color-media\")!\n ).matches)\n }\n\n /* Emit changes in color palette */\n const index = Math.max(0, Math.min(current.index, inputs.length - 1))\n return of(...inputs)\n .pipe(\n mergeMap(input => fromEvent(input, \"change\").pipe(map(() => input))),\n startWith(inputs[index]),\n map(input => ({\n index: inputs.indexOf(input),\n color: {\n media: input.getAttribute(\"data-md-color-media\"),\n scheme: input.getAttribute(\"data-md-color-scheme\"),\n primary: input.getAttribute(\"data-md-color-primary\"),\n accent: input.getAttribute(\"data-md-color-accent\")\n }\n } as Palette)),\n shareReplay(1)\n )\n}\n\n/**\n * Mount color palette\n *\n * @param el - Color palette element\n *\n * @returns Color palette component observable\n */\nexport function mountPalette(\n el: HTMLElement\n): Observable<Component<Palette>> {\n const inputs = getElements<HTMLInputElement>(\"input\", el)\n const meta = h(\"meta\", { name: \"theme-color\" })\n document.head.appendChild(meta)\n\n // Add color scheme meta tag\n const scheme = h(\"meta\", { name: \"color-scheme\" })\n document.head.appendChild(scheme)\n\n /* Mount component on subscription */\n const media$ = watchMedia(\"(prefers-color-scheme: light)\")\n return defer(() => {\n const push$ = new Subject<Palette>()\n push$.subscribe(palette => {\n document.body.setAttribute(\"data-md-color-switching\", \"\")\n\n /* Retrieve color palette for system preference */\n if (palette.color.media === \"(prefers-color-scheme)\") {\n const media = matchMedia(\"(prefers-color-scheme: light)\")\n const input = document.querySelector(media.matches\n ? \"[data-md-color-media='(prefers-color-scheme: light)']\"\n : \"[data-md-color-media='(prefers-color-scheme: dark)']\"\n )!\n\n /* Retrieve colors for system preference */\n palette.color.scheme = input.getAttribute(\"data-md-color-scheme\")!\n palette.color.primary = input.getAttribute(\"data-md-color-primary\")!\n palette.color.accent = input.getAttribute(\"data-md-color-accent\")!\n }\n\n /* Set color palette */\n for (const [key, value] of Object.entries(palette.color))\n document.body.setAttribute(`data-md-color-${key}`, value)\n\n /* Set toggle visibility */\n for (let index = 0; index < inputs.length; index++) {\n const label = inputs[index].nextElementSibling\n if (label instanceof HTMLElement)\n label.hidden = palette.index !== index\n }\n\n /* Persist preference in local storage */\n __md_set(\"__palette\", palette)\n })\n\n // Handle color switch on Enter or Space - see https://t.ly/YIhVj\n fromEvent<KeyboardEvent>(el, \"keydown\").pipe(\n filter(ev => ev.key === \"Enter\"),\n withLatestFrom(push$, (_, palette) => palette)\n )\n .subscribe(({ index }) => {\n index = (index + 1) % inputs.length\n inputs[index].click()\n inputs[index].focus()\n })\n\n /* Update theme-color meta tag */\n push$\n .pipe(\n map(() => {\n const header = getComponentElement(\"header\")\n const style = window.getComputedStyle(header)\n\n // Set color scheme\n scheme.content = style.colorScheme\n\n /* Return color in hexadecimal format */\n return style.backgroundColor.match(/\\d+/g)!\n .map(value => (+value).toString(16).padStart(2, \"0\"))\n .join(\"\")\n })\n )\n .subscribe(color => meta.content = `#${color}`)\n\n /* Revert transition durations after color switch */\n push$.pipe(observeOn(asyncScheduler))\n .subscribe(() => {\n document.body.removeAttribute(\"data-md-color-switching\")\n })\n\n /* Create and return component */\n return watchPalette(inputs)\n .pipe(\n takeUntil(media$.pipe(skip(1))),\n repeat(),\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n finalize,\n map,\n tap\n} from \"rxjs\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Progress indicator\n */\nexport interface Progress {\n value: number // Progress value\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n progress$: Subject<number> // Progress subject\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount progress indicator\n *\n * @param el - Progress indicator element\n * @param options - Options\n *\n * @returns Progress indicator component observable\n */\nexport function mountProgress(\n el: HTMLElement, { progress$ }: MountOptions\n): Observable<Component<Progress>> {\n\n // Mount component on subscription\n return defer(() => {\n const push$ = new Subject<Progress>()\n push$.subscribe(({ value }) => {\n el.style.setProperty(\"--md-progress-value\", `${value}`)\n })\n\n // Create and return component\n return progress$\n .pipe(\n tap(value => push$.next({ value })),\n finalize(() => push$.complete()),\n map(value => ({ ref: el, value }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport ClipboardJS from \"clipboard\"\nimport {\n Observable,\n Subject,\n map,\n tap\n} from \"rxjs\"\n\nimport { translation } from \"~/_\"\nimport { getElement } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n alert$: Subject<string> /* Alert subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Extract text to copy\n *\n * @param el - HTML element\n *\n * @returns Extracted text\n */\nfunction extract(el: HTMLElement): string {\n el.setAttribute(\"data-md-copying\", \"\")\n const copy = el.closest(\"[data-copy]\")\n const text = copy\n ? copy.getAttribute(\"data-copy\")!\n : el.innerText\n el.removeAttribute(\"data-md-copying\")\n return text.trimEnd()\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up Clipboard.js integration\n *\n * @param options - Options\n */\nexport function setupClipboardJS(\n { alert$ }: SetupOptions\n): void {\n if (ClipboardJS.isSupported()) {\n new Observable<ClipboardJS.Event>(subscriber => {\n new ClipboardJS(\"[data-clipboard-target], [data-clipboard-text]\", {\n text: el => (\n el.getAttribute(\"data-clipboard-text\")! ||\n extract(getElement(\n el.getAttribute(\"data-clipboard-target\")!\n ))\n )\n })\n .on(\"success\", ev => subscriber.next(ev))\n })\n .pipe(\n tap(ev => {\n const trigger = ev.trigger as HTMLElement\n trigger.focus()\n }),\n map(() => translation(\"clipboard.copied\"))\n )\n .subscribe(alert$)\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n catchError,\n map,\n of\n} from \"rxjs\"\n\nimport {\n getElement,\n getElements,\n requestXML\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Sitemap, i.e. a list of URLs\n */\nexport type Sitemap = Map<string, URL[]>\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Resolve URL to the given base URL\n *\n * When serving the site with instant navigation, MkDocs will set the hostname\n * to the value as specified in `dev_addr`, but the browser allows for several\n * hostnames to be used: `localhost`, `127.0.0.1` or even `0.0.0.0`, depending\n * on configuration. This function resolves the URL to the given hostname.\n *\n * @param url - URL\n * @param base - Base URL\n *\n * @returns Resolved URL\n */\nfunction resolve(url: URL, base: URL) {\n url.protocol = base.protocol\n url.hostname = base.hostname\n return url\n}\n\n/**\n * Extract sitemap from document\n *\n * This function extracts the URLs and alternate links from the document, and\n * associates alternate links to the original URL as found in `loc`, allowing\n * the browser to navigate to the correct page when switching languages. The\n * format of the sitemap is expected to adhere to:\n *\n * ``` xml\n * <urlset>\n * <url>\n * <loc>...</loc>\n * <xhtml:link rel=\"alternate\" hreflang=\"en\" href=\"...\"/>\n * <xhtml:link rel=\"alternate\" hreflang=\"de\" href=\"...\"/>\n * ...\n * </url>\n * ...\n * </urlset>\n * ```\n *\n * @param document - Document\n * @param base - Base URL\n *\n * @returns Sitemap\n */\nfunction extract(document: Document, base: URL): Sitemap {\n const sitemap: Sitemap = new Map()\n for (const el of getElements(\"url\", document)) {\n const url = getElement(\"loc\", el)\n\n // Create entry for location and add it to the list of links\n const links = [resolve(new URL(url.textContent!), base)]\n sitemap.set(`${links[0]}`, links)\n\n // Attach alternate links to current entry\n for (const link of getElements(\"[rel=alternate]\", el)) {\n const href = link.getAttribute(\"href\")\n if (href != null)\n links.push(resolve(new URL(href), base))\n }\n }\n\n // Return sitemap\n return sitemap\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch the sitemap for the given base URL\n *\n * If a network or parsing error occurs, we just default to an empty sitemap,\n * which means the caller should fall back to regular navigation.\n *\n * @param base - Base URL\n *\n * @returns Sitemap observable\n */\nexport function fetchSitemap(base: URL | string): Observable<Sitemap> {\n return requestXML(new URL(\"sitemap.xml\", base))\n .pipe(\n map(document => extract(document, new URL(base))),\n catchError(() => of(new Map())),\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n catchError,\n combineLatestWith,\n concat,\n debounceTime,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n fromEvent,\n ignoreElements,\n map,\n merge,\n of,\n share,\n switchMap,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { configuration, feature } from \"~/_\"\nimport {\n Viewport,\n getElements,\n getLocation,\n getOptionalElement,\n requestHTML,\n setLocation,\n setLocationHash\n} from \"~/browser\"\nimport { getComponentElement } from \"~/components\"\n\nimport { Sitemap, fetchSitemap } from \"../sitemap\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n location$: Subject<URL> // Location subject\n viewport$: Observable<Viewport> // Viewport observable\n progress$: Subject<number> // Progress subject\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Handle clicks on internal URLs while skipping external URLs\n *\n * @param ev - Mouse event\n * @param sitemap - Sitemap\n *\n * @returns URL observable\n */\nfunction handle(\n ev: MouseEvent, sitemap: Sitemap\n): Observable<URL> {\n if (!(ev.target instanceof Element))\n return EMPTY\n\n // Skip, as target is not within a link - clicks on non-link elements are\n // also captured, which we need to exclude from processing\n const el = ev.target.closest(\"a\")\n if (el === null)\n return EMPTY\n\n // Skip, as link opens in new window - we now know we have captured a click\n // on a link, but the link either has a `target` property defined, or the\n // user pressed the `meta` or `ctrl` key to open it in a new window. Thus,\n // we need to filter this event as well.\n if (el.target || ev.metaKey || ev.ctrlKey)\n return EMPTY\n\n // Next, we must check if the URL is relevant for us, i.e., if it's an\n // internal link to a page that is managed by MkDocs. Only then we can be\n // sure that the structure of the page to be loaded adheres to the current\n // document structure and can subsequently be injected into it without doing\n // a full reload. For this reason, we must canonicalize the URL by removing\n // all search parameters and hash fragments.\n const url = new URL(el.href)\n url.search = url.hash = \"\"\n\n // Skip, if URL is not included in the sitemap - this could be the case when\n // linking between versions or languages, or to another page that the author\n // included as part of the build, but that is not managed by MkDocs. In that\n // case we must not continue with instant navigation.\n if (!sitemap.has(`${url}`))\n return EMPTY\n\n // We now know that we have a link to an internal page, so we prevent the\n // browser from navigation and emit the URL for instant navigation. Note that\n // this also includes anchor links, which means we need to implement anchor\n // positioning ourselves. The reason for this is that if we wouldn't manage\n // anchor links as well, scroll restoration will not work correctly (e.g.\n // following an anchor link and scrolling).\n ev.preventDefault()\n return of(new URL(el.href))\n}\n\n/**\n * Create a map of head elements for lookup and replacement\n *\n * @param document - Document\n *\n * @returns Tag map\n */\nfunction head(document: Document): Map<string, HTMLElement> {\n const tags = new Map<string, HTMLElement>()\n for (const el of getElements(\":scope > *\", document.head))\n tags.set(el.outerHTML, el)\n\n // Return tag map\n return tags\n}\n\n/**\n * Resolve relative URLs in the given document\n *\n * This function resolves relative `href` and `src` attributes, which can belong\n * to all sorts of tags, like meta tags, links, images, scripts and more.\n *\n * @param document - Document\n *\n * @returns Document observable\n */\nfunction resolve(document: Document): Observable<Document> {\n for (const el of getElements(\"[href], [src]\", document))\n for (const key of [\"href\", \"src\"]) {\n const value = el.getAttribute(key)\n if (value && !/^(?:[a-z]+:)?\\/\\//i.test(value)) {\n // @ts-expect-error - trick: self-assign to resolve URL\n el[key] = el[key]\n break\n }\n }\n\n // Return document observable\n return of(document)\n}\n\n/**\n * Inject the contents of a document into the current one\n *\n * @param next - Next document\n *\n * @returns Document observable\n */\nfunction inject(next: Document): Observable<Document> {\n for (const selector of [\n \"[data-md-component=announce]\",\n \"[data-md-component=container]\",\n \"[data-md-component=header-topic]\",\n \"[data-md-component=outdated]\",\n \"[data-md-component=logo]\",\n \"[data-md-component=skip]\",\n ...feature(\"navigation.tabs.sticky\")\n ? [\"[data-md-component=tabs]\"]\n : []\n ]) {\n const source = getOptionalElement(selector)\n const target = getOptionalElement(selector, next)\n if (\n typeof source !== \"undefined\" &&\n typeof target !== \"undefined\"\n ) {\n source.replaceWith(target)\n }\n }\n\n // Update meta tags\n const tags = head(document)\n for (const [html, el] of head(next))\n if (tags.has(html))\n tags.delete(html)\n else\n document.head.appendChild(el)\n\n // Remove meta tags that are not present in the new document\n for (const el of tags.values()) {\n const name = el.getAttribute(\"name\")\n // @todo - find a better way to handle attributes we add dynamically in\n // other components without mounting components on every navigation, as\n // this might impact overall performance - see https://t.ly/ehp_O\n if (name !== \"theme-color\" && name !== \"color-scheme\")\n el.remove()\n }\n\n // After components and meta tags were replaced, re-evaluate scripts\n // that were provided by the author as part of Markdown files\n const container = getComponentElement(\"container\")\n return concat(getElements(\"script\", container))\n .pipe(\n switchMap(el => {\n const script = next.createElement(\"script\")\n if (el.src) {\n for (const name of el.getAttributeNames())\n script.setAttribute(name, el.getAttribute(name)!)\n el.replaceWith(script)\n\n // Complete when script is loaded\n return new Observable(observer => {\n script.onload = () => observer.complete()\n })\n\n // Complete immediately\n } else {\n script.textContent = el.textContent\n el.replaceWith(script)\n return EMPTY\n }\n }),\n ignoreElements(),\n endWith(document)\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up instant navigation\n *\n * This is a heavily orchestrated operation - see inline comments to learn how\n * this works with Material for MkDocs, and how you can hook into it.\n *\n * @param options - Options\n *\n * @returns Document observable\n */\nexport function setupInstantNavigation(\n { location$, viewport$, progress$ }: SetupOptions\n): Observable<Document> {\n const config = configuration()\n if (location.protocol === \"file:\")\n return EMPTY\n\n // Load sitemap immediately, so we have it available when the user initiates\n // the first navigation request without any perceivable delay\n const sitemap$ = fetchSitemap(config.base)\n\n // Since we might be on a slow connection, the user might trigger multiple\n // instant navigation events that overlap. MkDocs produces relative URLs for\n // all internal links, which becomes a problem in this case, because we need\n // to change the base URL the moment the user clicks a link that should be\n // intercepted in order to be consistent with popstate, which means that the\n // base URL would now be incorrect when resolving another relative link from\n // the same site. For this reason we always resolve all relative links to\n // absolute links, so we can be sure this never happens.\n of(document)\n .subscribe(resolve)\n\n // --------------------------------------------------------------------------\n // Navigation interception\n // --------------------------------------------------------------------------\n\n // Intercept navigation - to keep the number of event listeners down we use\n // the fact that uncaptured events bubble up to the body. This has the nice\n // property that we don't need to detach and then re-attach event listeners\n // when the document is replaced after a navigation event.\n const instant$ =\n fromEvent<MouseEvent>(document.body, \"click\")\n .pipe(\n combineLatestWith(sitemap$),\n switchMap(([ev, sitemap]) => handle(ev, sitemap)),\n share()\n )\n\n // Intercept history change events, e.g. when the user uses the browser's\n // back or forward buttons, and emit new location for fetching and parsing\n const history$ =\n fromEvent<PopStateEvent>(window, \"popstate\")\n .pipe(\n map(getLocation),\n share()\n )\n\n // While it would be better UX to defer navigation events until the document\n // is fully fetched and parsed, we must schedule it here to synchronize with\n // popstate events, as they are emitted immediately. Moreover we need to\n // store the current viewport offset for scroll restoration later on.\n instant$.pipe(withLatestFrom(viewport$))\n .subscribe(([url, { offset }]) => {\n history.replaceState(offset, \"\")\n history.pushState(null, \"\", url)\n })\n\n // Emit URLs that should be fetched via instant navigation on location subject\n // which was passed into this function. The state of instant navigation can be\n // intercepted by other parts of the application, which can synchronously back\n // up or restore state before or after instant navigation happens.\n merge(instant$, history$)\n .subscribe(location$)\n\n // --------------------------------------------------------------------------\n // Fetching and parsing\n // --------------------------------------------------------------------------\n\n // Fetch document - we deduplicate requests to the same location, so we don't\n // end up with multiple requests for the same page. We use `switchMap`, since\n // we want to cancel the previous request when a new one is triggered, which\n // is automatically handled by the observable returned by `request`. This is\n // essential to ensure a good user experience, as we don't want to load pages\n // that are not needed anymore, e.g., when the user clicks multiple links in\n // quick succession or on slow connections. If the request fails for some\n // reason, we fall back and use regular navigation, forcing a reload.\n const document$ =\n location$.pipe(\n distinctUntilKeyChanged(\"pathname\"),\n switchMap(url => requestHTML(url, { progress$ })\n .pipe(\n catchError(() => {\n setLocation(url, true)\n return EMPTY\n })\n )\n ),\n\n // The document was successfully fetched and parsed, so we can inject its\n // contents into the currently active document\n switchMap(resolve),\n switchMap(inject),\n share()\n )\n\n // --------------------------------------------------------------------------\n // Scroll restoration\n // --------------------------------------------------------------------------\n\n // Handle scroll restoration - we must restore the viewport offset after the\n // document has been fetched and injected, and every time the user clicks an\n // anchor that leads to an element on the same page, which might also happen\n // when the user uses the back or forward button.\n merge(\n document$.pipe(withLatestFrom(location$, (_, url) => url)),\n\n // Handle instant navigation events that are triggered by the user clicking\n // on an anchor link with a hash fragment different from the current one, as\n // well as from popstate events, which are emitted when the user navigates\n // back and forth between pages. We use a two-layered subscription to scope\n // the scroll restoration to the current page, as we don't need to restore\n // the viewport offset when the user navigates to a different page, as this\n // is already handled by the previous observable.\n document$.pipe(\n switchMap(() => location$),\n distinctUntilKeyChanged(\"pathname\"),\n switchMap(() => location$),\n distinctUntilKeyChanged(\"hash\")\n ),\n\n // Handle instant navigation events that are triggered by the user clicking\n // on an anchor link with the same hash fragment as the current one in the\n // URL. It is essential that we only intercept those from instant navigation\n // events and not from history change events, or we'll end up in and endless\n // loop. The top-level history entry must be removed, as it will be replaced\n // with a new one, which would otherwise lead to a duplicate entry.\n location$.pipe(\n distinctUntilChanged((a, b) => (\n a.pathname === b.pathname &&\n a.hash === b.hash\n )),\n switchMap(() => instant$),\n tap(() => history.back())\n )\n )\n .subscribe(url => {\n\n // Check if the current history entry has a state, which happens when the\n // user presses the back or forward button to visit a page we've already\n // seen. If there's no state, it means a new page was visited and we must\n // scroll to the top, unless an anchor is given.\n if (history.state !== null || !url.hash) {\n window.scrollTo(0, history.state?.y ?? 0)\n } else {\n history.scrollRestoration = \"auto\"\n setLocationHash(url.hash)\n history.scrollRestoration = \"manual\"\n }\n })\n\n // Disable scroll restoration when an instant navigation event occurs, so the\n // browser does not immediately set the viewport offset to the prior history\n // entry, scrolling to the position on the same page, which would look odd.\n // Instead, we manually restore the position once the page has loaded.\n location$.subscribe(() => {\n history.scrollRestoration = \"manual\"\n })\n\n // Enable scroll restoration before window unloads - this is essential to\n // ensure that full reloads (F5) restore the viewport offset correctly. If\n // only popstate events wouldn't reset the viewport offset prior to their\n // emission, we could just reset this in popstate. Meh.\n fromEvent(window, \"beforeunload\")\n .subscribe(() => {\n history.scrollRestoration = \"auto\"\n })\n\n // Track viewport offset, so we can restore it when the user navigates back\n // and forth between pages. Note that this must be debounced and cannot be\n // done in popstate, as popstate has already removed the entry from the\n // history, which means it is too late.\n viewport$.pipe(\n distinctUntilKeyChanged(\"offset\"),\n debounceTime(100)\n )\n .subscribe(({ offset }) => {\n history.replaceState(offset, \"\")\n })\n\n // Return document observable\n return document$\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\n\nimport { SearchConfig } from \"../config\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search highlight function\n *\n * @param value - Value\n *\n * @returns Highlighted value\n */\nexport type SearchHighlightFn = (value: string) => string\n\n/**\n * Search highlight factory function\n *\n * @param query - Query value\n *\n * @returns Search highlight function\n */\nexport type SearchHighlightFactoryFn = (query: string) => SearchHighlightFn\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a search highlighter\n *\n * @param config - Search configuration\n *\n * @returns Search highlight factory function\n */\nexport function setupSearchHighlighter(\n config: SearchConfig\n): SearchHighlightFactoryFn {\n // Hack: temporarily remove pure lookaheads and lookbehinds\n const regex = config.separator.split(\"|\").map(term => {\n const temp = term.replace(/(\\(\\?[!=<][^)]+\\))/g, \"\")\n return temp.length === 0 ? \"\uFFFD\" : term\n })\n .join(\"|\")\n\n const separator = new RegExp(regex, \"img\")\n const highlight = (_: unknown, data: string, term: string) => {\n return `${data}<mark data-md-highlight>${term}</mark>`\n }\n\n /* Return factory function */\n return (query: string) => {\n query = query\n .replace(/[\\s*+\\-:~^]+/g, \" \")\n .trim()\n\n /* Create search term match expression */\n const match = new RegExp(`(^|${config.separator}|)(${\n query\n .replace(/[|\\\\{}()[\\]^$+*?.-]/g, \"\\\\$&\")\n .replace(separator, \"|\")\n })`, \"img\")\n\n /* Highlight string value */\n return value => escapeHTML(value)\n .replace(match, highlight)\n .replace(/<\\/mark>(\\s+)<mark[^>]*>/img, \"$1\")\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { SearchResult } from \"../../_\"\nimport { SearchIndex } from \"../../config\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search message type\n */\nexport const enum SearchMessageType {\n SETUP, /* Search index setup */\n READY, /* Search index ready */\n QUERY, /* Search query */\n RESULT /* Search results */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Message containing the data necessary to setup the search index\n */\nexport interface SearchSetupMessage {\n type: SearchMessageType.SETUP /* Message type */\n data: SearchIndex /* Message data */\n}\n\n/**\n * Message indicating the search index is ready\n */\nexport interface SearchReadyMessage {\n type: SearchMessageType.READY /* Message type */\n}\n\n/**\n * Message containing a search query\n */\nexport interface SearchQueryMessage {\n type: SearchMessageType.QUERY /* Message type */\n data: string /* Message data */\n}\n\n/**\n * Message containing results for a search query\n */\nexport interface SearchResultMessage {\n type: SearchMessageType.RESULT /* Message type */\n data: SearchResult /* Message data */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Message exchanged with the search worker\n */\nexport type SearchMessage =\n | SearchSetupMessage\n | SearchReadyMessage\n | SearchQueryMessage\n | SearchResultMessage\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Type guard for search ready messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchReadyMessage(\n message: SearchMessage\n): message is SearchReadyMessage {\n return message.type === SearchMessageType.READY\n}\n\n/**\n * Type guard for search result messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchResultMessage(\n message: SearchMessage\n): message is SearchResultMessage {\n return message.type === SearchMessageType.RESULT\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n ObservableInput,\n Subject,\n first,\n merge,\n of,\n switchMap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { watchToggle, watchWorker } from \"~/browser\"\n\nimport { SearchIndex } from \"../../config\"\nimport {\n SearchMessage,\n SearchMessageType\n} from \"../message\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up search worker\n *\n * This function creates and initializes a web worker that is used for search,\n * so that the user interface doesn't freeze. In general, the application does\n * not care how search is implemented, as long as the web worker conforms to\n * the format expected by the application as defined in `SearchMessage`. This\n * allows the author to implement custom search functionality, by providing a\n * custom web worker via configuration.\n *\n * Material for MkDocs' built-in search implementation makes use of Lunr.js, an\n * efficient and fast implementation for client-side search. Leveraging a tiny\n * iframe-based web worker shim, search is even supported for the `file://`\n * protocol, enabling search for local non-hosted builds.\n *\n * If the protocol is `file://`, search initialization is deferred to mitigate\n * freezing, as it's now synchronous by design - see https://bit.ly/3C521EO\n *\n * @see https://bit.ly/3igvtQv - How to implement custom search\n *\n * @param url - Worker URL\n * @param index$ - Search index observable input\n *\n * @returns Search worker\n */\nexport function setupSearchWorker(\n url: string, index$: ObservableInput<SearchIndex>\n): Subject<SearchMessage> {\n const worker$ = watchWorker<SearchMessage>(url)\n merge(\n of(location.protocol !== \"file:\"),\n watchToggle(\"search\")\n )\n .pipe(\n first(active => active),\n switchMap(() => index$)\n )\n .subscribe(({ config, docs }) => worker$.next({\n type: SearchMessageType.SETUP,\n data: {\n config,\n docs,\n options: {\n suggest: feature(\"search.suggest\")\n }\n }\n }))\n\n /* Return search worker */\n return worker$\n}\n", "import { Sitemap } from \"../../sitemap\"\n\n/** See docstring for `selectedVersionCorrespondingURL` for the meaning of these fields. */\ntype CorrespondingURLParams = {\n selectedVersionSitemap: Sitemap\n selectedVersionBaseURL: URL\n currentLocation: URL\n currentBaseURL: string\n}\n\n/**\n * Choose a URL to navigate to when the user chooses a version in the version\n * selector.\n *\n * The parameters in `params` are named as follows, in order to make it clearer\n * which parameter means what when invoking the function:\n *\n * - selectedVersionSitemap: Sitemap - as obtained by fetchSitemap from `${selectedVersionBaseURL}/sitemap.xml`\n *\n * - selectedVersionBaseURL: URL - usually `${currentBaseURL}/../selectedVersion`\n *\n * - currentLocation: URL - current web browser location\n *\n * - currentBaseURL: string - as obtained from `config.base`\n *\n * @param params - arguments with the meanings explained above.\n * @returns the URL to navigate to or null if we can't be sure that the\n * corresponding page to the current page exists in the selected version\n */\nexport function selectedVersionCorrespondingURL(\n params: CorrespondingURLParams\n): URL | undefined {\n const {selectedVersionSitemap,\n selectedVersionBaseURL,\n currentLocation,\n currentBaseURL} = params\n const current_path = safeURLParse(currentBaseURL)?.pathname\n if (current_path === undefined) {\n return\n }\n const currentRelativePath = stripPrefix(currentLocation.pathname, current_path)\n if (currentRelativePath === undefined) {\n return\n }\n const sitemapCommonPrefix = shortestCommonPrefix(selectedVersionSitemap.keys())\n if (!selectedVersionSitemap.has(sitemapCommonPrefix)) {\n // We could also check that `commonSitemapPrefix` ends in the canonical version,\n // similarly to https://github.com/squidfunk/mkdocs-material/pull/7227. However,\n // I don't believe that Mike/MkDocs ever generate sitemaps where it would matter\n return\n }\n\n const potentialSitemapURL = safeURLParse(currentRelativePath, sitemapCommonPrefix)\n if (!potentialSitemapURL || !selectedVersionSitemap.has(potentialSitemapURL.href)) {\n return\n }\n\n const result = safeURLParse(currentRelativePath, selectedVersionBaseURL)\n if (!result) {\n return\n }\n result.hash = currentLocation.hash\n result.search = currentLocation.search\n return result\n}\n\n/**\n * A version of `new URL` that never throws. A polyfill for URL.parse() which is\n * not yet ubuquitous.\n *\n * @param url - passed to `new URL` constructor\n * @param base - passed to `new URL` constructor\n *\n * @returns `new URL(url, base)` or undefined if the URL is invalid.\n */\nfunction safeURLParse(url: string|URL, base?: string|URL): URL | undefined {\n try {\n return new URL(url, base)\n } catch {\n return\n }\n}\n\n// Basic string manipulation\n\n/** Strip a given prefix from a function\n *\n * @param s - string\n * @param prefix - prefix to strip\n *\n * @returns either the string with the prefix stripped or undefined if the\n * string did not begin with the prefix.\n */\nexport function stripPrefix(s: string, prefix: string): string | undefined {\n if (s.startsWith(prefix)) {\n return s.slice(prefix.length)\n }\n return undefined\n}\n\n/** Find the length of the longest common prefix of two strings\n *\n * @param s1 - first string\n * @param s2 - second string\n *\n * @returns - the length of the longest common prefix of the two strings.\n */\nfunction commonPrefixLen(s1: string, s2: string): number {\n const max = Math.min(s1.length, s2.length)\n let result\n for (result = 0; result < max; ++result) {\n if (s1[result] !== s2[result]) {\n break\n }\n }\n return result\n}\n\n/** Find the longest common prefix of any number of strings\n *\n * @param strs - an iterable of strings\n *\n * @returns the longest common prefix of all the strings\n */\nexport function shortestCommonPrefix(strs: Iterable<string>): string {\n let result // Undefined if no iterations happened\n for (const s of strs) {\n if (result === undefined) {\n result = s\n } else {\n result = result.slice(0, commonPrefixLen(result, s))\n }\n }\n return result ?? \"\"\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Subject,\n catchError,\n combineLatest,\n filter,\n fromEvent,\n map,\n of,\n switchMap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { configuration } from \"~/_\"\nimport {\n getElement,\n getLocation,\n requestJSON,\n setLocation\n} from \"~/browser\"\nimport { getComponentElements } from \"~/components\"\nimport {\n Version,\n renderVersionSelector\n} from \"~/templates\"\n\nimport { fetchSitemap } from \"../sitemap\"\n\nimport { selectedVersionCorrespondingURL } from \"./findurl\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n document$: Subject<Document> /* Document subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up version selector\n *\n * @param options - Options\n */\nexport function setupVersionSelector(\n { document$ }: SetupOptions\n): void {\n const config = configuration()\n const versions$ = requestJSON<Version[]>(\n new URL(\"../versions.json\", config.base)\n )\n .pipe(\n catchError(() => EMPTY) // @todo refactor instant loading\n )\n\n /* Determine current version */\n const current$ = versions$\n .pipe(\n map(versions => {\n const [, current] = config.base.match(/([^/]+)\\/?$/)!\n return versions.find(({ version, aliases }) => (\n version === current || aliases.includes(current)\n )) || versions[0]\n })\n )\n\n /* Intercept inter-version navigation */\n versions$\n .pipe(\n map(versions => new Map(versions.map(version => [\n `${new URL(`../${version.version}/`, config.base)}`,\n version\n ]))),\n switchMap(urls => fromEvent<MouseEvent>(document.body, \"click\")\n .pipe(\n filter(ev => !ev.metaKey && !ev.ctrlKey),\n withLatestFrom(current$),\n switchMap(([ev, current]) => {\n if (ev.target instanceof Element) {\n const el = ev.target.closest(\"a\")\n if (el && !el.target && urls.has(el.href)) {\n const url = el.href\n // This is a temporary hack to detect if a version inside the\n // version selector or on another part of the site was clicked.\n // If we're inside the version selector, we definitely want to\n // find the same page, as we might have different deployments\n // due to aliases. However, if we're outside the version\n // selector, we must abort here, because we might otherwise\n // interfere with instant navigation. We need to refactor this\n // at some point together with instant navigation.\n //\n // See https://github.com/squidfunk/mkdocs-material/issues/4012\n if (!ev.target.closest(\".md-version\")) {\n const version = urls.get(url)!\n if (version === current)\n return EMPTY\n }\n ev.preventDefault()\n return of(new URL(url))\n }\n }\n return EMPTY\n }),\n switchMap(selectedVersionBaseURL => {\n return fetchSitemap(selectedVersionBaseURL).pipe(\n map(\n sitemap =>\n selectedVersionCorrespondingURL({\n selectedVersionSitemap: sitemap,\n selectedVersionBaseURL,\n currentLocation: getLocation(),\n currentBaseURL: config.base\n }) ?? selectedVersionBaseURL,\n ),\n )\n })\n )\n )\n )\n .subscribe(url => setLocation(url, true))\n\n /* Render version selector and warning */\n combineLatest([versions$, current$])\n .subscribe(([versions, current]) => {\n const topic = getElement(\".md-header__topic\")\n topic.appendChild(renderVersionSelector(versions, current))\n })\n\n /* Integrate outdated version banner with instant navigation */\n document$.pipe(switchMap(() => current$))\n .subscribe(current => {\n\n /* Check if version state was already determined */\n let outdated = __md_get(\"__outdated\", sessionStorage)\n if (outdated === null) {\n outdated = true\n\n /* Obtain and normalize default versions */\n let ignored = config.version?.default || \"latest\"\n if (!Array.isArray(ignored))\n ignored = [ignored]\n\n /* Check if version is considered a default */\n main: for (const ignore of ignored)\n for (const version of current.aliases.concat(current.version))\n if (new RegExp(ignore, \"i\").test(version)) {\n outdated = false\n break main\n }\n\n /* Persist version state in session storage */\n __md_set(\"__outdated\", outdated, sessionStorage)\n }\n\n /* Unhide outdated version banner */\n if (outdated)\n for (const warning of getComponentElements(\"outdated\"))\n warning.hidden = false\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n finalize,\n first,\n fromEvent,\n ignoreElements,\n map,\n merge,\n shareReplay,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport {\n getElement,\n getLocation,\n setToggle,\n watchElementFocus,\n watchToggle\n} from \"~/browser\"\nimport {\n SearchMessage,\n SearchMessageType,\n isSearchReadyMessage\n} from \"~/integrations\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search query\n */\nexport interface SearchQuery {\n value: string /* Query value */\n focus: boolean /* Query focus */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch search query\n *\n * Note that the focus event which triggers re-reading the current query value\n * is delayed by `1ms` so the input's empty state is allowed to propagate.\n *\n * @param el - Search query element\n * @param options - Options\n *\n * @returns Search query observable\n */\nexport function watchSearchQuery(\n el: HTMLInputElement, { worker$ }: WatchOptions\n): Observable<SearchQuery> {\n\n /* Support search deep linking */\n const { searchParams } = getLocation()\n if (searchParams.has(\"q\")) {\n setToggle(\"search\", true)\n\n /* Set query from parameter */\n el.value = searchParams.get(\"q\")!\n el.focus()\n\n /* Remove query parameter on close */\n watchToggle(\"search\")\n .pipe(\n first(active => !active)\n )\n .subscribe(() => {\n const url = getLocation()\n url.searchParams.delete(\"q\")\n history.replaceState({}, \"\", `${url}`)\n })\n }\n\n /* Intercept focus and input events */\n const focus$ = watchElementFocus(el)\n const value$ = merge(\n worker$.pipe(first(isSearchReadyMessage)),\n fromEvent(el, \"keyup\"),\n focus$\n )\n .pipe(\n map(() => el.value),\n distinctUntilChanged()\n )\n\n /* Combine into single observable */\n return combineLatest([value$, focus$])\n .pipe(\n map(([value, focus]) => ({ value, focus })),\n shareReplay(1)\n )\n}\n\n/**\n * Mount search query\n *\n * @param el - Search query element\n * @param options - Options\n *\n * @returns Search query component observable\n */\nexport function mountSearchQuery(\n el: HTMLInputElement, { worker$ }: MountOptions\n): Observable<Component<SearchQuery, HTMLInputElement>> {\n const push$ = new Subject<SearchQuery>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n\n /* Handle value change */\n combineLatest([\n worker$.pipe(first(isSearchReadyMessage)),\n push$\n ], (_, query) => query)\n .pipe(\n distinctUntilKeyChanged(\"value\")\n )\n .subscribe(({ value }) => worker$.next({\n type: SearchMessageType.QUERY,\n data: value\n }))\n\n /* Handle focus change */\n push$\n .pipe(\n distinctUntilKeyChanged(\"focus\")\n )\n .subscribe(({ focus }) => {\n if (focus)\n setToggle(\"search\", focus)\n })\n\n /* Handle reset */\n fromEvent(el.form!, \"reset\")\n .pipe(\n takeUntil(done$)\n )\n .subscribe(() => el.focus())\n\n // Focus search query on label click - note that this is necessary to bring\n // up the keyboard on iOS and other mobile platforms, as the search dialog is\n // not visible at first, and programatically focusing an input element must\n // be triggered by a user interaction - see https://t.ly/Cb30n\n const label = getElement(\"header [for=__search]\")\n fromEvent(label, \"click\")\n .subscribe(() => el.focus())\n\n /* Create and return component */\n return watchSearchQuery(el, { worker$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state })),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n bufferCount,\n filter,\n finalize,\n first,\n fromEvent,\n map,\n merge,\n mergeMap,\n of,\n share,\n skipUntil,\n switchMap,\n takeUntil,\n tap,\n withLatestFrom,\n zipWith\n} from \"rxjs\"\n\nimport { translation } from \"~/_\"\nimport {\n getElement,\n getOptionalElement,\n watchElementBoundary,\n watchToggle\n} from \"~/browser\"\nimport {\n SearchMessage,\n SearchResult,\n isSearchReadyMessage,\n isSearchResultMessage\n} from \"~/integrations\"\nimport { renderSearchResultItem } from \"~/templates\"\nimport { round } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\nimport { SearchQuery } from \"../query\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n query$: Observable<SearchQuery> /* Search query observable */\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search result list\n *\n * This function performs a lazy rendering of the search results, depending on\n * the vertical offset of the search result container.\n *\n * @param el - Search result list element\n * @param options - Options\n *\n * @returns Search result list component observable\n */\nexport function mountSearchResult(\n el: HTMLElement, { worker$, query$ }: MountOptions\n): Observable<Component<SearchResult>> {\n const push$ = new Subject<SearchResult>()\n const boundary$ = watchElementBoundary(el.parentElement!)\n .pipe(\n filter(Boolean)\n )\n\n /* Retrieve container */\n const container = el.parentElement!\n\n /* Retrieve nested components */\n const meta = getElement(\":scope > :first-child\", el)\n const list = getElement(\":scope > :last-child\", el)\n\n /* Reveal to accessibility tree \u2013 see https://bit.ly/3iAA7t8 */\n watchToggle(\"search\")\n .subscribe(active => list.setAttribute(\n \"role\", active ? \"list\" : \"presentation\"\n ))\n\n /* Update search result metadata */\n push$\n .pipe(\n withLatestFrom(query$),\n skipUntil(worker$.pipe(first(isSearchReadyMessage)))\n )\n .subscribe(([{ items }, { value }]) => {\n switch (items.length) {\n\n /* No results */\n case 0:\n meta.textContent = value.length\n ? translation(\"search.result.none\")\n : translation(\"search.result.placeholder\")\n break\n\n /* One result */\n case 1:\n meta.textContent = translation(\"search.result.one\")\n break\n\n /* Multiple result */\n default:\n const count = round(items.length)\n meta.textContent = translation(\"search.result.other\", count)\n }\n })\n\n /* Render search result item */\n const render$ = push$\n .pipe(\n tap(() => list.innerHTML = \"\"),\n switchMap(({ items }) => merge(\n of(...items.slice(0, 10)),\n of(...items.slice(10))\n .pipe(\n bufferCount(4),\n zipWith(boundary$),\n switchMap(([chunk]) => chunk)\n )\n )),\n map(renderSearchResultItem),\n share()\n )\n\n /* Update search result list */\n render$.subscribe(item => list.appendChild(item))\n render$\n .pipe(\n mergeMap(item => {\n const details = getOptionalElement(\"details\", item)\n if (typeof details === \"undefined\")\n return EMPTY\n\n /* Keep position of details element stable */\n return fromEvent(details, \"toggle\")\n .pipe(\n takeUntil(push$),\n map(() => details)\n )\n })\n )\n .subscribe(details => {\n if (\n details.open === false &&\n details.offsetTop <= container.scrollTop\n )\n container.scrollTo({ top: details.offsetTop })\n })\n\n /* Filter search result message */\n const result$ = worker$\n .pipe(\n filter(isSearchResultMessage),\n map(({ data }) => data)\n )\n\n /* Create and return component */\n return result$\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n endWith,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { getLocation } from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { SearchQuery } from \"../query\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search sharing\n */\nexport interface SearchShare {\n url: URL /* Deep link for sharing */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n query$: Observable<SearchQuery> /* Search query observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n query$: Observable<SearchQuery> /* Search query observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search sharing\n *\n * @param _el - Search sharing element\n * @param options - Options\n *\n * @returns Search sharing observable\n */\nexport function watchSearchShare(\n _el: HTMLElement, { query$ }: WatchOptions\n): Observable<SearchShare> {\n return query$\n .pipe(\n map(({ value }) => {\n const url = getLocation()\n url.hash = \"\"\n\n /* Compute readable query strings */\n value = value\n .replace(/\\s+/g, \"+\") /* Collapse whitespace */\n .replace(/&/g, \"%26\") /* Escape '&' character */\n .replace(/=/g, \"%3D\") /* Escape '=' character */\n\n /* Replace query string */\n url.search = `q=${value}`\n return { url }\n })\n )\n}\n\n/**\n * Mount search sharing\n *\n * @param el - Search sharing element\n * @param options - Options\n *\n * @returns Search sharing component observable\n */\nexport function mountSearchShare(\n el: HTMLAnchorElement, options: MountOptions\n): Observable<Component<SearchShare>> {\n const push$ = new Subject<SearchShare>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe(({ url }) => {\n el.setAttribute(\"data-clipboard-text\", el.href)\n el.href = `${url}`\n })\n\n /* Prevent following of link */\n fromEvent(el, \"click\")\n .pipe(\n takeUntil(done$)\n )\n .subscribe(ev => ev.preventDefault())\n\n /* Create and return component */\n return watchSearchShare(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n combineLatestWith,\n distinctUntilChanged,\n filter,\n finalize,\n fromEvent,\n map,\n merge,\n observeOn,\n tap\n} from \"rxjs\"\n\nimport { Keyboard } from \"~/browser\"\nimport {\n SearchMessage,\n SearchResult,\n isSearchResultMessage\n} from \"~/integrations\"\n\nimport { Component, getComponentElement } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search suggestions\n */\nexport interface SearchSuggest {}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n keyboard$: Observable<Keyboard> /* Keyboard observable */\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search suggestions\n *\n * This function will perform a lazy rendering of the search results, depending\n * on the vertical offset of the search result container.\n *\n * @param el - Search result list element\n * @param options - Options\n *\n * @returns Search result list component observable\n */\nexport function mountSearchSuggest(\n el: HTMLElement, { worker$, keyboard$ }: MountOptions\n): Observable<Component<SearchSuggest>> {\n const push$ = new Subject<SearchResult>()\n\n /* Retrieve query component and track all changes */\n const query = getComponentElement(\"search-query\")\n const query$ = merge(\n fromEvent(query, \"keydown\"),\n fromEvent(query, \"focus\")\n )\n .pipe(\n observeOn(asyncScheduler),\n map(() => query.value),\n distinctUntilChanged(),\n )\n\n /* Update search suggestions */\n push$\n .pipe(\n combineLatestWith(query$),\n map(([{ suggest }, value]) => {\n const words = value.split(/([\\s-]+)/)\n if (suggest?.length && words[words.length - 1]) {\n const last = suggest[suggest.length - 1]\n if (last.startsWith(words[words.length - 1]))\n words[words.length - 1] = last\n } else {\n words.length = 0\n }\n return words\n })\n )\n .subscribe(words => el.innerHTML = words\n .join(\"\")\n .replace(/\\s/g, \" \")\n )\n\n /* Set up search keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"search\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Right arrow: accept current suggestion */\n case \"ArrowRight\":\n if (\n el.innerText.length &&\n query.selectionStart === query.value.length\n )\n query.value = el.innerText\n break\n }\n })\n\n /* Filter search result message */\n const result$ = worker$\n .pipe(\n filter(isSearchResultMessage),\n map(({ data }) => data)\n )\n\n /* Create and return component */\n return result$\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(() => ({ ref: el }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n ObservableInput,\n filter,\n fromEvent,\n merge,\n mergeWith\n} from \"rxjs\"\n\nimport { configuration } from \"~/_\"\nimport {\n Keyboard,\n getActiveElement,\n getElements,\n setToggle\n} from \"~/browser\"\nimport {\n SearchIndex,\n SearchResult,\n setupSearchWorker\n} from \"~/integrations\"\n\nimport {\n Component,\n getComponentElement,\n getComponentElements\n} from \"../../_\"\nimport {\n SearchQuery,\n mountSearchQuery\n} from \"../query\"\nimport { mountSearchResult } from \"../result\"\nimport {\n SearchShare,\n mountSearchShare\n} from \"../share\"\nimport {\n SearchSuggest,\n mountSearchSuggest\n} from \"../suggest\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search\n */\nexport type Search =\n | SearchQuery\n | SearchResult\n | SearchShare\n | SearchSuggest\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n index$: ObservableInput<SearchIndex> /* Search index observable */\n keyboard$: Observable<Keyboard> /* Keyboard observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search\n *\n * This function sets up the search functionality, including the underlying\n * web worker and all keyboard bindings.\n *\n * @param el - Search element\n * @param options - Options\n *\n * @returns Search component observable\n */\nexport function mountSearch(\n el: HTMLElement, { index$, keyboard$ }: MountOptions\n): Observable<Component<Search>> {\n const config = configuration()\n try {\n const worker$ = setupSearchWorker(config.search, index$)\n\n /* Retrieve query and result components */\n const query = getComponentElement(\"search-query\", el)\n const result = getComponentElement(\"search-result\", el)\n\n /* Always close search on result selection */\n fromEvent<PointerEvent>(el, \"click\")\n .pipe(\n filter(({ target }) => (\n target instanceof Element && !!target.closest(\"a\")\n ))\n )\n .subscribe(() => setToggle(\"search\", false))\n\n /* Set up search keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"search\")\n )\n .subscribe(key => {\n const active = getActiveElement()\n switch (key.type) {\n\n /* Enter: go to first (best) result */\n case \"Enter\":\n if (active === query) {\n const anchors = new Map<HTMLAnchorElement, number>()\n for (const anchor of getElements<HTMLAnchorElement>(\n \":first-child [href]\", result\n )) {\n const article = anchor.firstElementChild!\n anchors.set(anchor, parseFloat(\n article.getAttribute(\"data-md-score\")!\n ))\n }\n\n /* Go to result with highest score, if any */\n if (anchors.size) {\n const [[best]] = [...anchors].sort(([, a], [, b]) => b - a)\n best.click()\n }\n\n /* Otherwise omit form submission */\n key.claim()\n }\n break\n\n /* Escape or Tab: close search */\n case \"Escape\":\n case \"Tab\":\n setToggle(\"search\", false)\n query.blur()\n break\n\n /* Vertical arrows: select previous or next search result */\n case \"ArrowUp\":\n case \"ArrowDown\":\n if (typeof active === \"undefined\") {\n query.focus()\n } else {\n const els = [query, ...getElements(\n \":not(details) > [href], summary, details[open] [href]\",\n result\n )]\n const i = Math.max(0, (\n Math.max(0, els.indexOf(active)) + els.length + (\n key.type === \"ArrowUp\" ? -1 : +1\n )\n ) % els.length)\n els[i].focus()\n }\n\n /* Prevent scrolling of page */\n key.claim()\n break\n\n /* All other keys: hand to search query */\n default:\n if (query !== getActiveElement())\n query.focus()\n }\n })\n\n /* Set up global keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Open search and select query */\n case \"f\":\n case \"s\":\n case \"/\":\n query.focus()\n query.select()\n\n /* Prevent scrolling of page */\n key.claim()\n break\n }\n })\n\n /* Create and return component */\n const query$ = mountSearchQuery(query, { worker$ })\n return merge(\n query$,\n mountSearchResult(result, { worker$, query$ })\n )\n .pipe(\n mergeWith(\n\n /* Search sharing */\n ...getComponentElements(\"search-share\", el)\n .map(child => mountSearchShare(child, { query$ })),\n\n /* Search suggestions */\n ...getComponentElements(\"search-suggest\", el)\n .map(child => mountSearchSuggest(child, { worker$, keyboard$ }))\n )\n )\n\n /* Gracefully handle broken search */\n } catch (err) {\n el.hidden = true\n return NEVER\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n ObservableInput,\n combineLatest,\n filter,\n map,\n startWith\n} from \"rxjs\"\n\nimport { getLocation } from \"~/browser\"\nimport {\n SearchIndex,\n setupSearchHighlighter\n} from \"~/integrations\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search highlighting\n */\nexport interface SearchHighlight {\n nodes: Map<ChildNode, string> /* Map of replacements */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n index$: ObservableInput<SearchIndex> /* Search index observable */\n location$: Observable<URL> /* Location observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search highlighting\n *\n * @param el - Content element\n * @param options - Options\n *\n * @returns Search highlighting component observable\n */\nexport function mountSearchHiglight(\n el: HTMLElement, { index$, location$ }: MountOptions\n): Observable<Component<SearchHighlight>> {\n return combineLatest([\n index$,\n location$\n .pipe(\n startWith(getLocation()),\n filter(url => !!url.searchParams.get(\"h\"))\n )\n ])\n .pipe(\n map(([index, url]) => setupSearchHighlighter(index.config)(\n url.searchParams.get(\"h\")!\n )),\n map(fn => {\n const nodes = new Map<ChildNode, string>()\n\n /* Traverse text nodes and collect matches */\n const it = document.createNodeIterator(el, NodeFilter.SHOW_TEXT)\n for (let node = it.nextNode(); node; node = it.nextNode()) {\n if (node.parentElement?.offsetHeight) {\n const original = node.textContent!\n const replaced = fn(original)\n if (replaced.length > original.length)\n nodes.set(node as ChildNode, replaced)\n }\n }\n\n /* Replace original nodes with matches */\n for (const [node, text] of nodes) {\n const { childNodes } = h(\"span\", null, text)\n node.replaceWith(...Array.from(childNodes))\n }\n\n /* Return component */\n return { ref: el, nodes }\n })\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n asyncScheduler,\n auditTime,\n combineLatest,\n defer,\n distinctUntilChanged,\n endWith,\n finalize,\n first,\n from,\n fromEvent,\n ignoreElements,\n map,\n mergeMap,\n observeOn,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n Viewport,\n getElement,\n getElementOffset,\n getElementSize,\n getElements\n} from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Sidebar\n */\nexport interface Sidebar {\n height: number /* Sidebar height */\n locked: boolean /* Sidebar is locked */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n main$: Observable<Main> /* Main area observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch sidebar\n *\n * This function returns an observable that computes the visual parameters of\n * the sidebar which depends on the vertical viewport offset, as well as the\n * height of the main area. When the page is scrolled beyond the header, the\n * sidebar is locked and fills the remaining space.\n *\n * @param el - Sidebar element\n * @param options - Options\n *\n * @returns Sidebar observable\n */\nexport function watchSidebar(\n el: HTMLElement, { viewport$, main$ }: WatchOptions\n): Observable<Sidebar> {\n const parent = el.closest<HTMLElement>(\".md-grid\")!\n const adjust =\n parent.offsetTop -\n parent.parentElement!.offsetTop\n\n /* Compute the sidebar's available height and if it should be locked */\n return combineLatest([main$, viewport$])\n .pipe(\n map(([{ offset, height }, { offset: { y } }]) => {\n height = height\n + Math.min(adjust, Math.max(0, y - offset))\n - adjust\n return {\n height,\n locked: y >= offset + adjust\n }\n }),\n distinctUntilChanged((a, b) => (\n a.height === b.height &&\n a.locked === b.locked\n ))\n )\n}\n\n/**\n * Mount sidebar\n *\n * This function doesn't set the height of the actual sidebar, but of its first\n * child \u2013 the `.md-sidebar__scrollwrap` element in order to mitigiate jittery\n * sidebars when the footer is scrolled into view. At some point we switched\n * from `absolute` / `fixed` positioning to `sticky` positioning, significantly\n * reducing jitter in some browsers (respectively Firefox and Safari) when\n * scrolling from the top. However, top-aligned sticky positioning means that\n * the sidebar snaps to the bottom when the end of the container is reached.\n * This is what leads to the mentioned jitter, as the sidebar's height may be\n * updated too slowly.\n *\n * This behaviour can be mitigiated by setting the height of the sidebar to `0`\n * while preserving the padding, and the height on its first element.\n *\n * @param el - Sidebar element\n * @param options - Options\n *\n * @returns Sidebar component observable\n */\nexport function mountSidebar(\n el: HTMLElement, { header$, ...options }: MountOptions\n): Observable<Component<Sidebar>> {\n const inner = getElement(\".md-sidebar__scrollwrap\", el)\n const { y } = getElementOffset(inner)\n return defer(() => {\n const push$ = new Subject<Sidebar>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n const next$ = push$\n .pipe(\n auditTime(0, animationFrameScheduler)\n )\n\n /* Update sidebar height and offset */\n next$.pipe(withLatestFrom(header$))\n .subscribe({\n\n /* Handle emission */\n next([{ height }, { height: offset }]) {\n inner.style.height = `${height - 2 * y}px`\n el.style.top = `${offset}px`\n },\n\n /* Handle complete */\n complete() {\n inner.style.height = \"\"\n el.style.top = \"\"\n }\n })\n\n /* Bring active item into view on initial load */\n next$.pipe(first())\n .subscribe(() => {\n for (const item of getElements(\".md-nav__link--active[href]\", el)) {\n if (!item.clientHeight) // skip invisible toc in left sidebar\n continue\n const container = item.closest<HTMLElement>(\".md-sidebar__scrollwrap\")!\n if (typeof container !== \"undefined\") {\n const offset = item.offsetTop - container.offsetTop\n const { height } = getElementSize(container)\n container.scrollTo({\n top: offset - height / 2\n })\n }\n }\n })\n\n /* Handle accessibility for expandable items, see https://bit.ly/3jaod9p */\n from(getElements<HTMLLabelElement>(\"label[tabindex]\", el))\n .pipe(\n mergeMap(label => fromEvent(label, \"click\")\n .pipe(\n observeOn(asyncScheduler),\n map(() => label),\n takeUntil(done$)\n )\n )\n )\n .subscribe(label => {\n const input = getElement<HTMLInputElement>(`[id=\"${label.htmlFor}\"]`)\n const nav = getElement(`[aria-labelledby=\"${label.id}\"]`)\n nav.setAttribute(\"aria-expanded\", `${input.checked}`)\n })\n\n /* Create and return component */\n return watchSidebar(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Repo, User } from \"github-types\"\nimport {\n EMPTY,\n Observable,\n catchError,\n defaultIfEmpty,\n map,\n zip\n} from \"rxjs\"\n\nimport { requestJSON } from \"~/browser\"\n\nimport { SourceFacts } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * GitHub release (partial)\n */\ninterface Release {\n tag_name: string /* Tag name */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch GitHub repository facts\n *\n * @param user - GitHub user or organization\n * @param repo - GitHub repository\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFactsFromGitHub(\n user: string, repo?: string\n): Observable<SourceFacts> {\n if (typeof repo !== \"undefined\") {\n const url = `https://api.github.com/repos/${user}/${repo}`\n return zip(\n\n /* Fetch version */\n requestJSON<Release>(`${url}/releases/latest`)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(release => ({\n version: release.tag_name\n })),\n defaultIfEmpty({})\n ),\n\n /* Fetch stars and forks */\n requestJSON<Repo>(url)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(info => ({\n stars: info.stargazers_count,\n forks: info.forks_count\n })),\n defaultIfEmpty({})\n )\n )\n .pipe(\n map(([release, info]) => ({ ...release, ...info }))\n )\n\n /* User or organization */\n } else {\n const url = `https://api.github.com/users/${user}`\n return requestJSON<User>(url)\n .pipe(\n map(info => ({\n repositories: info.public_repos\n })),\n defaultIfEmpty({})\n )\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ProjectSchema } from \"gitlab\"\nimport {\n EMPTY,\n Observable,\n catchError,\n defaultIfEmpty,\n map,\n zip\n} from \"rxjs\"\n\nimport { requestJSON } from \"~/browser\"\n\nimport { SourceFacts } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * GitLab release (partial)\n */\ninterface Release { // @todo remove and use the ReleaseSchema type instead after switching from gitlab to @gitbeaker/rest\n tag_name: string /* Tag name */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch GitLab repository facts\n *\n * @param base - GitLab base\n * @param project - GitLab project\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFactsFromGitLab(\n base: string, project: string\n): Observable<SourceFacts> {\n const url = `https://${base}/api/v4/projects/${encodeURIComponent(project)}`\n return zip(\n\n /* Fetch version */\n requestJSON<Release>(`${url}/releases/permalink/latest`)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(({ tag_name }) => ({\n version: tag_name\n })),\n defaultIfEmpty({})\n ),\n\n /* Fetch stars and forks */\n requestJSON<ProjectSchema>(url)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(({ star_count, forks_count }) => ({\n stars: star_count,\n forks: forks_count\n })),\n defaultIfEmpty({})\n )\n )\n .pipe(\n map(([release, info]) => ({ ...release, ...info }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { EMPTY, Observable } from \"rxjs\"\n\nimport { fetchSourceFactsFromGitHub } from \"../github\"\nimport { fetchSourceFactsFromGitLab } from \"../gitlab\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository facts for repositories\n */\nexport interface RepositoryFacts {\n stars?: number /* Number of stars */\n forks?: number /* Number of forks */\n version?: string /* Latest version */\n}\n\n/**\n * Repository facts for organizations\n */\nexport interface OrganizationFacts {\n repositories?: number /* Number of repositories */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Repository facts\n */\nexport type SourceFacts =\n | RepositoryFacts\n | OrganizationFacts\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch repository facts\n *\n * @param url - Repository URL\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFacts(\n url: string\n): Observable<SourceFacts> {\n\n /* Try to match GitHub repository */\n let match = url.match(/^.+github\\.com\\/([^/]+)\\/?([^/]+)?/i)\n if (match) {\n const [, user, repo] = match\n return fetchSourceFactsFromGitHub(user, repo)\n }\n\n /* Try to match GitLab repository */\n match = url.match(/^.+?([^/]*gitlab[^/]+)\\/(.+?)\\/?$/i)\n if (match) {\n const [, base, slug] = match\n return fetchSourceFactsFromGitLab(base, slug)\n }\n\n /* Fallback */\n return EMPTY\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n catchError,\n defer,\n filter,\n finalize,\n map,\n of,\n shareReplay,\n tap\n} from \"rxjs\"\n\nimport { getElement } from \"~/browser\"\nimport { ConsentDefaults } from \"~/components/consent\"\nimport { renderSourceFacts } from \"~/templates\"\n\nimport {\n Component,\n getComponentElements\n} from \"../../_\"\nimport {\n SourceFacts,\n fetchSourceFacts\n} from \"../facts\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository information\n */\nexport interface Source {\n facts: SourceFacts /* Repository facts */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository information observable\n */\nlet fetch$: Observable<Source>\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch repository information\n *\n * This function tries to read the repository facts from session storage, and\n * if unsuccessful, fetches them from the underlying provider.\n *\n * @param el - Repository information element\n *\n * @returns Repository information observable\n */\nexport function watchSource(\n el: HTMLAnchorElement\n): Observable<Source> {\n return fetch$ ||= defer(() => {\n const cached = __md_get<SourceFacts>(\"__source\", sessionStorage)\n if (cached) {\n return of(cached)\n } else {\n\n /* Check if consent is configured and was given */\n const els = getComponentElements(\"consent\")\n if (els.length) {\n const consent = __md_get<ConsentDefaults>(\"__consent\")\n if (!(consent && consent.github))\n return EMPTY\n }\n\n /* Fetch repository facts */\n return fetchSourceFacts(el.href)\n .pipe(\n tap(facts => __md_set(\"__source\", facts, sessionStorage))\n )\n }\n })\n .pipe(\n catchError(() => EMPTY),\n filter(facts => Object.keys(facts).length > 0),\n map(facts => ({ facts })),\n shareReplay(1)\n )\n}\n\n/**\n * Mount repository information\n *\n * @param el - Repository information element\n *\n * @returns Repository information component observable\n */\nexport function mountSource(\n el: HTMLAnchorElement\n): Observable<Component<Source>> {\n const inner = getElement(\":scope > :last-child\", el)\n return defer(() => {\n const push$ = new Subject<Source>()\n push$.subscribe(({ facts }) => {\n inner.appendChild(renderSourceFacts(facts))\n inner.classList.add(\"md-source__repository--active\")\n })\n\n /* Create and return component */\n return watchSource(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n distinctUntilKeyChanged,\n finalize,\n map,\n of,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n watchElementSize,\n watchViewportAt\n} from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Navigation tabs\n */\nexport interface Tabs {\n hidden: boolean /* Navigation tabs are hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch navigation tabs\n *\n * @param el - Navigation tabs element\n * @param options - Options\n *\n * @returns Navigation tabs observable\n */\nexport function watchTabs(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<Tabs> {\n return watchElementSize(document.body)\n .pipe(\n switchMap(() => watchViewportAt(el, { header$, viewport$ })),\n map(({ offset: { y } }) => {\n return {\n hidden: y >= 10\n }\n }),\n distinctUntilKeyChanged(\"hidden\")\n )\n}\n\n/**\n * Mount navigation tabs\n *\n * This function hides the navigation tabs when scrolling past the threshold\n * and makes them reappear in a nice CSS animation when scrolling back up.\n *\n * @param el - Navigation tabs element\n * @param options - Options\n *\n * @returns Navigation tabs component observable\n */\nexport function mountTabs(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Tabs>> {\n return defer(() => {\n const push$ = new Subject<Tabs>()\n push$.subscribe({\n\n /* Handle emission */\n next({ hidden }) {\n el.hidden = hidden\n },\n\n /* Handle complete */\n complete() {\n el.hidden = false\n }\n })\n\n /* Create and return component */\n return (\n feature(\"navigation.tabs.sticky\")\n ? of({ hidden: false })\n : watchTabs(el, options)\n )\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n bufferCount,\n combineLatestWith,\n debounceTime,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n filter,\n finalize,\n ignoreElements,\n map,\n merge,\n observeOn,\n of,\n repeat,\n scan,\n share,\n skip,\n startWith,\n switchMap,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElement,\n getElementContainer,\n getElementSize,\n getElements,\n getLocation,\n getOptionalElement,\n watchElementSize\n} from \"~/browser\"\n\nimport {\n Component,\n getComponentElement\n} from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Table of contents\n */\nexport interface TableOfContents {\n prev: HTMLAnchorElement[][] /* Anchors (previous) */\n next: HTMLAnchorElement[][] /* Anchors (next) */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch table of contents\n *\n * This is effectively a scroll spy implementation which will account for the\n * fixed header and automatically re-calculate anchor offsets when the viewport\n * is resized. The returned observable will only emit if the table of contents\n * needs to be repainted.\n *\n * This implementation tracks an anchor element's entire path starting from its\n * level up to the top-most anchor element, e.g. `[h3, h2, h1]`. Although the\n * Material theme currently doesn't make use of this information, it enables\n * the styling of the entire hierarchy through customization.\n *\n * Note that the current anchor is the last item of the `prev` anchor list.\n *\n * @param el - Table of contents element\n * @param options - Options\n *\n * @returns Table of contents observable\n */\nexport function watchTableOfContents(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<TableOfContents> {\n const table = new Map<HTMLAnchorElement, HTMLElement>()\n\n /* Compute anchor-to-target mapping */\n const anchors = getElements<HTMLAnchorElement>(\".md-nav__link\", el)\n for (const anchor of anchors) {\n const id = decodeURIComponent(anchor.hash.substring(1))\n const target = getOptionalElement(`[id=\"${id}\"]`)\n if (typeof target !== \"undefined\")\n table.set(anchor, target)\n }\n\n /* Compute necessary adjustment for header */\n const adjust$ = header$\n .pipe(\n distinctUntilKeyChanged(\"height\"),\n map(({ height }) => {\n const main = getComponentElement(\"main\")\n const grid = getElement(\":scope > :first-child\", main)\n return height + 0.8 * (\n grid.offsetTop -\n main.offsetTop\n )\n }),\n share()\n )\n\n /* Compute partition of previous and next anchors */\n const partition$ = watchElementSize(document.body)\n .pipe(\n distinctUntilKeyChanged(\"height\"),\n\n /* Build index to map anchor paths to vertical offsets */\n switchMap(body => defer(() => {\n let path: HTMLAnchorElement[] = []\n return of([...table].reduce((index, [anchor, target]) => {\n while (path.length) {\n const last = table.get(path[path.length - 1])!\n if (last.tagName >= target.tagName) {\n path.pop()\n } else {\n break\n }\n }\n\n /* If the current anchor is hidden, continue with its parent */\n let offset = target.offsetTop\n while (!offset && target.parentElement) {\n target = target.parentElement\n offset = target.offsetTop\n }\n\n /* Fix anchor offsets in tables - see https://bit.ly/3CUFOcn */\n let parent = target.offsetParent as HTMLElement\n for (; parent; parent = parent.offsetParent as HTMLElement)\n offset += parent.offsetTop\n\n /* Map reversed anchor path to vertical offset */\n return index.set(\n [...path = [...path, anchor]].reverse(),\n offset\n )\n }, new Map<HTMLAnchorElement[], number>()))\n })\n .pipe(\n\n /* Sort index by vertical offset (see https://bit.ly/30z6QSO) */\n map(index => new Map([...index].sort(([, a], [, b]) => a - b))),\n combineLatestWith(adjust$),\n\n /* Re-compute partition when viewport offset changes */\n switchMap(([index, adjust]) => viewport$\n .pipe(\n scan(([prev, next], { offset: { y }, size }) => {\n const last = y + size.height >= Math.floor(body.height)\n\n /* Look forward */\n while (next.length) {\n const [, offset] = next[0]\n if (offset - adjust < y || last) {\n prev = [...prev, next.shift()!]\n } else {\n break\n }\n }\n\n /* Look backward */\n while (prev.length) {\n const [, offset] = prev[prev.length - 1]\n if (offset - adjust >= y && !last) {\n next = [prev.pop()!, ...next]\n } else {\n break\n }\n }\n\n /* Return partition */\n return [prev, next]\n }, [[], [...index]]),\n distinctUntilChanged((a, b) => (\n a[0] === b[0] &&\n a[1] === b[1]\n ))\n )\n )\n )\n )\n )\n\n /* Compute and return anchor list migrations */\n return partition$\n .pipe(\n map(([prev, next]) => ({\n prev: prev.map(([path]) => path),\n next: next.map(([path]) => path)\n })),\n\n /* Extract anchor list migrations */\n startWith({ prev: [], next: [] }),\n bufferCount(2, 1),\n map(([a, b]) => {\n\n /* Moving down */\n if (a.prev.length < b.prev.length) {\n return {\n prev: b.prev.slice(Math.max(0, a.prev.length - 1), b.prev.length),\n next: []\n }\n\n /* Moving up */\n } else {\n return {\n prev: b.prev.slice(-1),\n next: b.next.slice(0, b.next.length - a.next.length)\n }\n }\n })\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount table of contents\n *\n * @param el - Table of contents element\n * @param options - Options\n *\n * @returns Table of contents component observable\n */\nexport function mountTableOfContents(\n el: HTMLElement, { viewport$, header$, main$, target$ }: MountOptions\n): Observable<Component<TableOfContents>> {\n return defer(() => {\n const push$ = new Subject<TableOfContents>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe(({ prev, next }) => {\n\n /* Look forward */\n for (const [anchor] of next) {\n anchor.classList.remove(\"md-nav__link--passed\")\n anchor.classList.remove(\"md-nav__link--active\")\n }\n\n /* Look backward */\n for (const [index, [anchor]] of prev.entries()) {\n anchor.classList.add(\"md-nav__link--passed\")\n anchor.classList.toggle(\n \"md-nav__link--active\",\n index === prev.length - 1\n )\n }\n })\n\n /* Set up following, if enabled */\n if (feature(\"toc.follow\")) {\n\n /* Toggle smooth scrolling only for anchor clicks */\n const smooth$ = merge(\n viewport$.pipe(debounceTime(1), map(() => undefined)),\n viewport$.pipe(debounceTime(250), map(() => \"smooth\" as const))\n )\n\n /* Bring active anchor into view */ // @todo: refactor\n push$\n .pipe(\n filter(({ prev }) => prev.length > 0),\n combineLatestWith(main$.pipe(observeOn(asyncScheduler))),\n withLatestFrom(smooth$)\n )\n .subscribe(([[{ prev }], behavior]) => {\n const [anchor] = prev[prev.length - 1]\n if (anchor.offsetHeight) {\n\n /* Retrieve overflowing container and scroll */\n const container = getElementContainer(anchor)\n if (typeof container !== \"undefined\") {\n const offset = anchor.offsetTop - container.offsetTop\n const { height } = getElementSize(container)\n container.scrollTo({\n top: offset - height / 2,\n behavior\n })\n }\n }\n })\n }\n\n /* Set up anchor tracking, if enabled */\n if (feature(\"navigation.tracking\"))\n viewport$\n .pipe(\n takeUntil(done$),\n distinctUntilKeyChanged(\"offset\"),\n debounceTime(250),\n skip(1),\n takeUntil(target$.pipe(skip(1))),\n repeat({ delay: 250 }),\n withLatestFrom(push$)\n )\n .subscribe(([, { prev }]) => {\n const url = getLocation()\n\n /* Set hash fragment to active anchor */\n const anchor = prev[prev.length - 1]\n if (anchor && anchor.length) {\n const [active] = anchor\n const { hash } = new URL(active.href)\n if (url.hash !== hash) {\n url.hash = hash\n history.replaceState({}, \"\", `${url}`)\n }\n\n /* Reset anchor when at the top */\n } else {\n url.hash = \"\"\n history.replaceState({}, \"\", `${url}`)\n }\n })\n\n /* Create and return component */\n return watchTableOfContents(el, { viewport$, header$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n repeat,\n skip,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { Viewport } from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Back-to-top button\n */\nexport interface BackToTop {\n hidden: boolean /* Back-to-top button is hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n main$: Observable<Main> /* Main area observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch back-to-top\n *\n * @param _el - Back-to-top element\n * @param options - Options\n *\n * @returns Back-to-top observable\n */\nexport function watchBackToTop(\n _el: HTMLElement, { viewport$, main$, target$ }: WatchOptions\n): Observable<BackToTop> {\n\n /* Compute direction */\n const direction$ = viewport$\n .pipe(\n map(({ offset: { y } }) => y),\n bufferCount(2, 1),\n map(([a, b]) => a > b && b > 0),\n distinctUntilChanged()\n )\n\n /* Compute whether main area is active */\n const active$ = main$\n .pipe(\n map(({ active }) => active)\n )\n\n /* Compute threshold for hiding */\n return combineLatest([active$, direction$])\n .pipe(\n map(([active, direction]) => !(active && direction)),\n distinctUntilChanged(),\n takeUntil(target$.pipe(skip(1))),\n endWith(true),\n repeat({ delay: 250 }),\n map(hidden => ({ hidden }))\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount back-to-top\n *\n * @param el - Back-to-top element\n * @param options - Options\n *\n * @returns Back-to-top component observable\n */\nexport function mountBackToTop(\n el: HTMLElement, { viewport$, header$, main$, target$ }: MountOptions\n): Observable<Component<BackToTop>> {\n const push$ = new Subject<BackToTop>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe({\n\n /* Handle emission */\n next({ hidden }) {\n el.hidden = hidden\n if (hidden) {\n el.setAttribute(\"tabindex\", \"-1\")\n el.blur()\n } else {\n el.removeAttribute(\"tabindex\")\n }\n },\n\n /* Handle complete */\n complete() {\n el.style.top = \"\"\n el.hidden = true\n el.removeAttribute(\"tabindex\")\n }\n })\n\n /* Watch header height */\n header$\n .pipe(\n takeUntil(done$),\n distinctUntilKeyChanged(\"height\")\n )\n .subscribe(({ height }) => {\n el.style.top = `${height + 16}px`\n })\n\n /* Go back to top */\n fromEvent(el, \"click\")\n .subscribe(ev => {\n ev.preventDefault()\n window.scrollTo({ top: 0 })\n })\n\n /* Create and return component */\n return watchBackToTop(el, { viewport$, main$, target$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n filter,\n finalize,\n map,\n mergeMap,\n skip,\n switchMap,\n take,\n takeUntil\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElements,\n watchElementVisibility\n} from \"~/browser\"\nimport { mountInlineTooltip2 } from \"~/components/tooltip2\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable<Document> /* Document observable */\n viewport$: Observable<Viewport> /* Viewport observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch ellipsis\n *\n * This function will fetch all elements that are shortened with ellipsis, and\n * filter those which are visible. Once they become visible, they stay in that\n * state, even though they may be hidden again. This optimization is necessary\n * to reduce pressure on the browser, with elements fading in and out of view.\n *\n * @param options - Options\n */\nexport function patchEllipsis(\n { document$, viewport$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements(\".md-ellipsis\")),\n mergeMap(el => watchElementVisibility(el)\n .pipe(\n takeUntil(document$.pipe(skip(1))),\n filter(visible => visible),\n map(() => el),\n take(1)\n )\n ),\n filter(el => el.offsetWidth < el.scrollWidth),\n mergeMap(el => {\n const text = el.innerText\n const host = el.closest(\"a\") || el\n host.title = text\n\n // Do not mount improved tooltip if feature is disabled\n if (!feature(\"content.tooltips\"))\n return EMPTY\n\n /* Mount tooltip */\n return mountInlineTooltip2(host, { viewport$ })\n .pipe(\n takeUntil(document$.pipe(skip(1))),\n finalize(() => host.removeAttribute(\"title\"))\n )\n })\n )\n .subscribe()\n\n // @todo move this outside of here and fix memleaks\n if (feature(\"content.tooltips\"))\n document$\n .pipe(\n switchMap(() => getElements(\".md-status\")),\n mergeMap(el => mountInlineTooltip2(el, { viewport$ }))\n )\n .subscribe()\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n mergeMap,\n switchMap,\n takeWhile,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable<Document> /* Document observable */\n tablet$: Observable<boolean> /* Media tablet observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch indeterminate checkboxes\n *\n * This function replaces the indeterminate \"pseudo state\" with the actual\n * indeterminate state, which is used to keep navigation always expanded.\n *\n * @param options - Options\n */\nexport function patchIndeterminate(\n { document$, tablet$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements<HTMLInputElement>(\n \".md-toggle--indeterminate\"\n )),\n tap(el => {\n el.indeterminate = true\n el.checked = false\n }),\n mergeMap(el => fromEvent(el, \"change\")\n .pipe(\n takeWhile(() => el.classList.contains(\"md-toggle--indeterminate\")),\n map(() => el)\n )\n ),\n withLatestFrom(tablet$)\n )\n .subscribe(([el, tablet]) => {\n el.classList.remove(\"md-toggle--indeterminate\")\n if (tablet)\n el.checked = false\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n filter,\n fromEvent,\n map,\n mergeMap,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable<Document> /* Document observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Check whether the given device is an Apple device\n *\n * @returns Test result\n */\nfunction isAppleDevice(): boolean {\n return /(iPad|iPhone|iPod)/.test(navigator.userAgent)\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch all elements with `data-md-scrollfix` attributes\n *\n * This is a year-old patch which ensures that overflow scrolling works at the\n * top and bottom of containers on iOS by ensuring a `1px` scroll offset upon\n * the start of a touch event.\n *\n * @see https://bit.ly/2SCtAOO - Original source\n *\n * @param options - Options\n */\nexport function patchScrollfix(\n { document$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements(\"[data-md-scrollfix]\")),\n tap(el => el.removeAttribute(\"data-md-scrollfix\")),\n filter(isAppleDevice),\n mergeMap(el => fromEvent(el, \"touchstart\")\n .pipe(\n map(() => el)\n )\n )\n )\n .subscribe(el => {\n const top = el.scrollTop\n\n /* We're at the top of the container */\n if (top === 0) {\n el.scrollTop = 1\n\n /* We're at the bottom of the container */\n } else if (top + el.offsetHeight === el.scrollHeight) {\n el.scrollTop = top - 1\n }\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n delay,\n map,\n of,\n switchMap,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n Viewport,\n watchToggle\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n tablet$: Observable<boolean> /* Media tablet observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch the document body to lock when search is open\n *\n * For mobile and tablet viewports, the search is rendered full screen, which\n * leads to scroll leaking when at the top or bottom of the search result. This\n * function locks the body when the search is in full screen mode, and restores\n * the scroll position when leaving.\n *\n * @param options - Options\n */\nexport function patchScrolllock(\n { viewport$, tablet$ }: PatchOptions\n): void {\n combineLatest([watchToggle(\"search\"), tablet$])\n .pipe(\n map(([active, tablet]) => active && !tablet),\n switchMap(active => of(active)\n .pipe(\n delay(active ? 400 : 100)\n )\n ),\n withLatestFrom(viewport$)\n )\n .subscribe(([active, { offset: { y }}]) => {\n if (active) {\n document.body.setAttribute(\"data-md-scrolllock\", \"\")\n document.body.style.top = `-${y}px`\n } else {\n const value = -1 * parseInt(document.body.style.top, 10)\n document.body.removeAttribute(\"data-md-scrolllock\")\n document.body.style.top = \"\"\n if (value)\n window.scrollTo(0, value)\n }\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Polyfills\n * ------------------------------------------------------------------------- */\n\n/* Polyfill `Object.entries` */\nif (!Object.entries)\n Object.entries = function (obj: object) {\n const data: [string, string][] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n data.push([key, obj[key]])\n\n /* Return entries */\n return data\n }\n\n/* Polyfill `Object.values` */\nif (!Object.values)\n Object.values = function (obj: object) {\n const data: string[] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n data.push(obj[key])\n\n /* Return values */\n return data\n }\n\n/* ------------------------------------------------------------------------- */\n\n/* Polyfills for `Element` */\nif (typeof Element !== \"undefined\") {\n\n /* Polyfill `Element.scrollTo` */\n if (!Element.prototype.scrollTo)\n Element.prototype.scrollTo = function (\n x?: ScrollToOptions | number, y?: number\n ): void {\n if (typeof x === \"object\") {\n this.scrollLeft = x.left!\n this.scrollTop = x.top!\n } else {\n this.scrollLeft = x!\n this.scrollTop = y!\n }\n }\n\n /* Polyfill `Element.replaceWith` */\n if (!Element.prototype.replaceWith)\n Element.prototype.replaceWith = function (\n ...nodes: Array<string | Node>\n ): void {\n const parent = this.parentNode\n if (parent) {\n if (nodes.length === 0)\n parent.removeChild(this)\n\n /* Replace children and create text nodes */\n for (let i = nodes.length - 1; i >= 0; i--) {\n let node = nodes[i]\n if (typeof node === \"string\")\n node = document.createTextNode(node)\n else if (node.parentNode)\n node.parentNode.removeChild(node)\n\n /* Replace child or insert before previous sibling */\n if (!i)\n parent.replaceChild(node, this)\n else\n parent.insertBefore(this.previousSibling!, node)\n }\n }\n }\n}\n"],
- "mappings": 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+ "sourcesContent": ["(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? factory() :\n typeof define === 'function' && define.amd ? define(factory) :\n (factory());\n}(this, (function () { 'use strict';\n\n /**\n * Applies the :focus-visible polyfill at the given scope.\n * A scope in this case is either the top-level Document or a Shadow Root.\n *\n * @param {(Document|ShadowRoot)} scope\n * @see https://github.com/WICG/focus-visible\n */\n function applyFocusVisiblePolyfill(scope) {\n var hadKeyboardEvent = true;\n var hadFocusVisibleRecently = false;\n var hadFocusVisibleRecentlyTimeout = null;\n\n var inputTypesAllowlist = {\n text: true,\n search: true,\n url: true,\n tel: true,\n email: true,\n password: true,\n number: true,\n date: true,\n month: true,\n week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n };\n\n /**\n * Helper function for legacy browsers and iframes which sometimes focus\n * elements like document, body, and non-interactive SVG.\n * @param {Element} el\n */\n function isValidFocusTarget(el) {\n if (\n el &&\n el !== document &&\n el.nodeName !== 'HTML' &&\n el.nodeName !== 'BODY' &&\n 'classList' in el &&\n 'contains' in el.classList\n ) {\n return true;\n }\n return false;\n }\n\n /**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} el\n * @return {boolean}\n */\n function focusTriggersKeyboardModality(el) {\n var type = el.type;\n var tagName = el.tagName;\n\n if (tagName === 'INPUT' && inputTypesAllowlist[type] && !el.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !el.readOnly) {\n return true;\n }\n\n if (el.isContentEditable) {\n return true;\n }\n\n return false;\n }\n\n /**\n * Add the `focus-visible` class to the given element if it was not added by\n * the author.\n * @param {Element} el\n */\n function addFocusVisibleClass(el) {\n if (el.classList.contains('focus-visible')) {\n return;\n }\n el.classList.add('focus-visible');\n el.setAttribute('data-focus-visible-added', '');\n }\n\n /**\n * Remove the `focus-visible` class from the given element if it was not\n * originally added by the author.\n * @param {Element} el\n */\n function removeFocusVisibleClass(el) {\n if (!el.hasAttribute('data-focus-visible-added')) {\n return;\n }\n el.classList.remove('focus-visible');\n el.removeAttribute('data-focus-visible-added');\n }\n\n /**\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * Apply `focus-visible` to any current active element and keep track\n * of our keyboard modality state with `hadKeyboardEvent`.\n * @param {KeyboardEvent} e\n */\n function onKeyDown(e) {\n if (e.metaKey || e.altKey || e.ctrlKey) {\n return;\n }\n\n if (isValidFocusTarget(scope.activeElement)) {\n addFocusVisibleClass(scope.activeElement);\n }\n\n hadKeyboardEvent = true;\n }\n\n /**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n * @param {Event} e\n */\n function onPointerDown(e) {\n hadKeyboardEvent = false;\n }\n\n /**\n * On `focus`, add the `focus-visible` class to the target if:\n * - the target received focus as a result of keyboard navigation, or\n * - the event target is an element that will likely require interaction\n * via the keyboard (e.g. a text box)\n * @param {Event} e\n */\n function onFocus(e) {\n // Prevent IE from focusing the document or HTML element.\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (hadKeyboardEvent || focusTriggersKeyboardModality(e.target)) {\n addFocusVisibleClass(e.target);\n }\n }\n\n /**\n * On `blur`, remove the `focus-visible` class from the target.\n * @param {Event} e\n */\n function onBlur(e) {\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (\n e.target.classList.contains('focus-visible') ||\n e.target.hasAttribute('data-focus-visible-added')\n ) {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function() {\n hadFocusVisibleRecently = false;\n }, 100);\n removeFocusVisibleClass(e.target);\n }\n }\n\n /**\n * If the user changes tabs, keep track of whether or not the previously\n * focused element had .focus-visible.\n * @param {Event} e\n */\n function onVisibilityChange(e) {\n if (document.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n addInitialPointerMoveListeners();\n }\n }\n\n /**\n * Add a group of listeners to detect usage of any pointing devices.\n * These listeners will be added when the polyfill first loads, and anytime\n * the window is blurred, so that they are active when the window regains\n * focus.\n */\n function addInitialPointerMoveListeners() {\n document.addEventListener('mousemove', onInitialPointerMove);\n document.addEventListener('mousedown', onInitialPointerMove);\n document.addEventListener('mouseup', onInitialPointerMove);\n document.addEventListener('pointermove', onInitialPointerMove);\n document.addEventListener('pointerdown', onInitialPointerMove);\n document.addEventListener('pointerup', onInitialPointerMove);\n document.addEventListener('touchmove', onInitialPointerMove);\n document.addEventListener('touchstart', onInitialPointerMove);\n document.addEventListener('touchend', onInitialPointerMove);\n }\n\n function removeInitialPointerMoveListeners() {\n document.removeEventListener('mousemove', onInitialPointerMove);\n document.removeEventListener('mousedown', onInitialPointerMove);\n document.removeEventListener('mouseup', onInitialPointerMove);\n document.removeEventListener('pointermove', onInitialPointerMove);\n document.removeEventListener('pointerdown', onInitialPointerMove);\n document.removeEventListener('pointerup', onInitialPointerMove);\n document.removeEventListener('touchmove', onInitialPointerMove);\n document.removeEventListener('touchstart', onInitialPointerMove);\n document.removeEventListener('touchend', onInitialPointerMove);\n }\n\n /**\n * When the polfyill first loads, assume the user is in keyboard modality.\n * If any event is received from a pointing device (e.g. mouse, pointer,\n * touch), turn off keyboard modality.\n * This accounts for situations where focus enters the page from the URL bar.\n * @param {Event} e\n */\n function onInitialPointerMove(e) {\n // Work around a Safari quirk that fires a mousemove on <html> whenever the\n // window blurs, even if you're tabbing out of the page. \u00AF\\_(\u30C4)_/\u00AF\n if (e.target.nodeName && e.target.nodeName.toLowerCase() === 'html') {\n return;\n }\n\n hadKeyboardEvent = false;\n removeInitialPointerMoveListeners();\n }\n\n // For some kinds of state, we are interested in changes at the global scope\n // only. For example, global pointer input, global key presses and global\n // visibility change should affect the state at every scope:\n document.addEventListener('keydown', onKeyDown, true);\n document.addEventListener('mousedown', onPointerDown, true);\n document.addEventListener('pointerdown', onPointerDown, true);\n document.addEventListener('touchstart', onPointerDown, true);\n document.addEventListener('visibilitychange', onVisibilityChange, true);\n\n addInitialPointerMoveListeners();\n\n // For focus and blur, we specifically care about state changes in the local\n // scope. This is because focus / blur events that originate from within a\n // shadow root are not re-dispatched from the host element if it was already\n // the active element in its own scope:\n scope.addEventListener('focus', onFocus, true);\n scope.addEventListener('blur', onBlur, true);\n\n // We detect that a node is a ShadowRoot by ensuring that it is a\n // DocumentFragment and also has a host property. This check covers native\n // implementation and polyfill implementation transparently. If we only cared\n // about the native implementation, we could just check if the scope was\n // an instance of a ShadowRoot.\n if (scope.nodeType === Node.DOCUMENT_FRAGMENT_NODE && scope.host) {\n // Since a ShadowRoot is a special kind of DocumentFragment, it does not\n // have a root element to add a class to. So, we add this attribute to the\n // host element instead:\n scope.host.setAttribute('data-js-focus-visible', '');\n } else if (scope.nodeType === Node.DOCUMENT_NODE) {\n document.documentElement.classList.add('js-focus-visible');\n document.documentElement.setAttribute('data-js-focus-visible', '');\n }\n }\n\n // It is important to wrap all references to global window and document in\n // these checks to support server-side rendering use cases\n // @see https://github.com/WICG/focus-visible/issues/199\n if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n // Make the polyfill helper globally available. This can be used as a signal\n // to interested libraries that wish to coordinate with the polyfill for e.g.,\n // applying the polyfill to a shadow root:\n window.applyFocusVisiblePolyfill = applyFocusVisiblePolyfill;\n\n // Notify interested libraries of the polyfill's presence, in case the\n // polyfill was loaded lazily:\n var event;\n\n try {\n event = new CustomEvent('focus-visible-polyfill-ready');\n } catch (error) {\n // IE11 does not support using CustomEvent as a constructor directly:\n event = document.createEvent('CustomEvent');\n event.initCustomEvent('focus-visible-polyfill-ready', false, false, {});\n }\n\n window.dispatchEvent(event);\n }\n\n if (typeof document !== 'undefined') {\n // Apply the polyfill to the global document, so that no JavaScript\n // coordination is required to use the polyfill in the top-level document:\n applyFocusVisiblePolyfill(document);\n }\n\n})));\n", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "/*!\n * clipboard.js v2.0.11\n * https://clipboardjs.com/\n *\n * Licensed MIT \u00A9 Zeno Rocha\n */\n(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"ClipboardJS\"] = factory();\n\telse\n\t\troot[\"ClipboardJS\"] = factory();\n})(this, function() {\nreturn /******/ (function() { // webpackBootstrap\n/******/ \tvar __webpack_modules__ = ({\n\n/***/ 686:\n/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXPORTS\n__webpack_require__.d(__webpack_exports__, {\n \"default\": function() { return /* binding */ clipboard; }\n});\n\n// EXTERNAL MODULE: ./node_modules/tiny-emitter/index.js\nvar tiny_emitter = __webpack_require__(279);\nvar tiny_emitter_default = /*#__PURE__*/__webpack_require__.n(tiny_emitter);\n// EXTERNAL MODULE: ./node_modules/good-listener/src/listen.js\nvar listen = __webpack_require__(370);\nvar listen_default = /*#__PURE__*/__webpack_require__.n(listen);\n// EXTERNAL MODULE: ./node_modules/select/src/select.js\nvar src_select = __webpack_require__(817);\nvar select_default = /*#__PURE__*/__webpack_require__.n(src_select);\n;// CONCATENATED MODULE: ./src/common/command.js\n/**\n * Executes a given operation type.\n * @param {String} type\n * @return {Boolean}\n */\nfunction command(type) {\n try {\n return document.execCommand(type);\n } catch (err) {\n return false;\n }\n}\n;// CONCATENATED MODULE: ./src/actions/cut.js\n\n\n/**\n * Cut action wrapper.\n * @param {String|HTMLElement} target\n * @return {String}\n */\n\nvar ClipboardActionCut = function ClipboardActionCut(target) {\n var selectedText = select_default()(target);\n command('cut');\n return selectedText;\n};\n\n/* harmony default export */ var actions_cut = (ClipboardActionCut);\n;// CONCATENATED MODULE: ./src/common/create-fake-element.js\n/**\n * Creates a fake textarea element with a value.\n * @param {String} value\n * @return {HTMLElement}\n */\nfunction createFakeElement(value) {\n var isRTL = document.documentElement.getAttribute('dir') === 'rtl';\n var fakeElement = document.createElement('textarea'); // Prevent zooming on iOS\n\n fakeElement.style.fontSize = '12pt'; // Reset box model\n\n fakeElement.style.border = '0';\n fakeElement.style.padding = '0';\n fakeElement.style.margin = '0'; // Move element out of screen horizontally\n\n fakeElement.style.position = 'absolute';\n fakeElement.style[isRTL ? 'right' : 'left'] = '-9999px'; // Move element to the same position vertically\n\n var yPosition = window.pageYOffset || document.documentElement.scrollTop;\n fakeElement.style.top = \"\".concat(yPosition, \"px\");\n fakeElement.setAttribute('readonly', '');\n fakeElement.value = value;\n return fakeElement;\n}\n;// CONCATENATED MODULE: ./src/actions/copy.js\n\n\n\n/**\n * Create fake copy action wrapper using a fake element.\n * @param {String} target\n * @param {Object} options\n * @return {String}\n */\n\nvar fakeCopyAction = function fakeCopyAction(value, options) {\n var fakeElement = createFakeElement(value);\n options.container.appendChild(fakeElement);\n var selectedText = select_default()(fakeElement);\n command('copy');\n fakeElement.remove();\n return selectedText;\n};\n/**\n * Copy action wrapper.\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @return {String}\n */\n\n\nvar ClipboardActionCopy = function ClipboardActionCopy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n var selectedText = '';\n\n if (typeof target === 'string') {\n selectedText = fakeCopyAction(target, options);\n } else if (target instanceof HTMLInputElement && !['text', 'search', 'url', 'tel', 'password'].includes(target === null || target === void 0 ? void 0 : target.type)) {\n // If input type doesn't support `setSelectionRange`. Simulate it. https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/setSelectionRange\n selectedText = fakeCopyAction(target.value, options);\n } else {\n selectedText = select_default()(target);\n command('copy');\n }\n\n return selectedText;\n};\n\n/* harmony default export */ var actions_copy = (ClipboardActionCopy);\n;// CONCATENATED MODULE: ./src/actions/default.js\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n\n\n/**\n * Inner function which performs selection from either `text` or `target`\n * properties and then executes copy or cut operations.\n * @param {Object} options\n */\n\nvar ClipboardActionDefault = function ClipboardActionDefault() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // Defines base properties passed from constructor.\n var _options$action = options.action,\n action = _options$action === void 0 ? 'copy' : _options$action,\n container = options.container,\n target = options.target,\n text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.\n\n if (action !== 'copy' && action !== 'cut') {\n throw new Error('Invalid \"action\" value, use either \"copy\" or \"cut\"');\n } // Sets the `target` property using an element that will be have its content copied.\n\n\n if (target !== undefined) {\n if (target && _typeof(target) === 'object' && target.nodeType === 1) {\n if (action === 'copy' && target.hasAttribute('disabled')) {\n throw new Error('Invalid \"target\" attribute. Please use \"readonly\" instead of \"disabled\" attribute');\n }\n\n if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {\n throw new Error('Invalid \"target\" attribute. You can\\'t cut text from elements with \"readonly\" or \"disabled\" attributes');\n }\n } else {\n throw new Error('Invalid \"target\" value, use a valid Element');\n }\n } // Define selection strategy based on `text` property.\n\n\n if (text) {\n return actions_copy(text, {\n container: container\n });\n } // Defines which selection strategy based on `target` property.\n\n\n if (target) {\n return action === 'cut' ? actions_cut(target) : actions_copy(target, {\n container: container\n });\n }\n};\n\n/* harmony default export */ var actions_default = (ClipboardActionDefault);\n;// CONCATENATED MODULE: ./src/clipboard.js\nfunction clipboard_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { clipboard_typeof = function _typeof(obj) { return typeof obj; }; } else { clipboard_typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return clipboard_typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (clipboard_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n\n\n\n\n\n/**\n * Helper function to retrieve attribute value.\n * @param {String} suffix\n * @param {Element} element\n */\n\nfunction getAttributeValue(suffix, element) {\n var attribute = \"data-clipboard-\".concat(suffix);\n\n if (!element.hasAttribute(attribute)) {\n return;\n }\n\n return element.getAttribute(attribute);\n}\n/**\n * Base class which takes one or more elements, adds event listeners to them,\n * and instantiates a new `ClipboardAction` on each click.\n */\n\n\nvar Clipboard = /*#__PURE__*/function (_Emitter) {\n _inherits(Clipboard, _Emitter);\n\n var _super = _createSuper(Clipboard);\n\n /**\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n * @param {Object} options\n */\n function Clipboard(trigger, options) {\n var _this;\n\n _classCallCheck(this, Clipboard);\n\n _this = _super.call(this);\n\n _this.resolveOptions(options);\n\n _this.listenClick(trigger);\n\n return _this;\n }\n /**\n * Defines if attributes would be resolved using internal setter functions\n * or custom functions that were passed in the constructor.\n * @param {Object} options\n */\n\n\n _createClass(Clipboard, [{\n key: \"resolveOptions\",\n value: function resolveOptions() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n this.action = typeof options.action === 'function' ? options.action : this.defaultAction;\n this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;\n this.text = typeof options.text === 'function' ? options.text : this.defaultText;\n this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;\n }\n /**\n * Adds a click event listener to the passed trigger.\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n */\n\n }, {\n key: \"listenClick\",\n value: function listenClick(trigger) {\n var _this2 = this;\n\n this.listener = listen_default()(trigger, 'click', function (e) {\n return _this2.onClick(e);\n });\n }\n /**\n * Defines a new `ClipboardAction` on each click event.\n * @param {Event} e\n */\n\n }, {\n key: \"onClick\",\n value: function onClick(e) {\n var trigger = e.delegateTarget || e.currentTarget;\n var action = this.action(trigger) || 'copy';\n var text = actions_default({\n action: action,\n container: this.container,\n target: this.target(trigger),\n text: this.text(trigger)\n }); // Fires an event based on the copy operation result.\n\n this.emit(text ? 'success' : 'error', {\n action: action,\n text: text,\n trigger: trigger,\n clearSelection: function clearSelection() {\n if (trigger) {\n trigger.focus();\n }\n\n window.getSelection().removeAllRanges();\n }\n });\n }\n /**\n * Default `action` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultAction\",\n value: function defaultAction(trigger) {\n return getAttributeValue('action', trigger);\n }\n /**\n * Default `target` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultTarget\",\n value: function defaultTarget(trigger) {\n var selector = getAttributeValue('target', trigger);\n\n if (selector) {\n return document.querySelector(selector);\n }\n }\n /**\n * Allow fire programmatically a copy action\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @returns Text copied.\n */\n\n }, {\n key: \"defaultText\",\n\n /**\n * Default `text` lookup function.\n * @param {Element} trigger\n */\n value: function defaultText(trigger) {\n return getAttributeValue('text', trigger);\n }\n /**\n * Destroy lifecycle.\n */\n\n }, {\n key: \"destroy\",\n value: function destroy() {\n this.listener.destroy();\n }\n }], [{\n key: \"copy\",\n value: function copy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n return actions_copy(target, options);\n }\n /**\n * Allow fire programmatically a cut action\n * @param {String|HTMLElement} target\n * @returns Text cutted.\n */\n\n }, {\n key: \"cut\",\n value: function cut(target) {\n return actions_cut(target);\n }\n /**\n * Returns the support of the given action, or all actions if no action is\n * given.\n * @param {String} [action]\n */\n\n }, {\n key: \"isSupported\",\n value: function isSupported() {\n var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];\n var actions = typeof action === 'string' ? [action] : action;\n var support = !!document.queryCommandSupported;\n actions.forEach(function (action) {\n support = support && !!document.queryCommandSupported(action);\n });\n return support;\n }\n }]);\n\n return Clipboard;\n}((tiny_emitter_default()));\n\n/* harmony default export */ var clipboard = (Clipboard);\n\n/***/ }),\n\n/***/ 828:\n/***/ (function(module) {\n\nvar DOCUMENT_NODE_TYPE = 9;\n\n/**\n * A polyfill for Element.matches()\n */\nif (typeof Element !== 'undefined' && !Element.prototype.matches) {\n var proto = Element.prototype;\n\n proto.matches = proto.matchesSelector ||\n proto.mozMatchesSelector ||\n proto.msMatchesSelector ||\n proto.oMatchesSelector ||\n proto.webkitMatchesSelector;\n}\n\n/**\n * Finds the closest parent that matches a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @return {Function}\n */\nfunction closest (element, selector) {\n while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {\n if (typeof element.matches === 'function' &&\n element.matches(selector)) {\n return element;\n }\n element = element.parentNode;\n }\n}\n\nmodule.exports = closest;\n\n\n/***/ }),\n\n/***/ 438:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar closest = __webpack_require__(828);\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction _delegate(element, selector, type, callback, useCapture) {\n var listenerFn = listener.apply(this, arguments);\n\n element.addEventListener(type, listenerFn, useCapture);\n\n return {\n destroy: function() {\n element.removeEventListener(type, listenerFn, useCapture);\n }\n }\n}\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element|String|Array} [elements]\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction delegate(elements, selector, type, callback, useCapture) {\n // Handle the regular Element usage\n if (typeof elements.addEventListener === 'function') {\n return _delegate.apply(null, arguments);\n }\n\n // Handle Element-less usage, it defaults to global delegation\n if (typeof type === 'function') {\n // Use `document` as the first parameter, then apply arguments\n // This is a short way to .unshift `arguments` without running into deoptimizations\n return _delegate.bind(null, document).apply(null, arguments);\n }\n\n // Handle Selector-based usage\n if (typeof elements === 'string') {\n elements = document.querySelectorAll(elements);\n }\n\n // Handle Array-like based usage\n return Array.prototype.map.call(elements, function (element) {\n return _delegate(element, selector, type, callback, useCapture);\n });\n}\n\n/**\n * Finds closest match and invokes callback.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Function}\n */\nfunction listener(element, selector, type, callback) {\n return function(e) {\n e.delegateTarget = closest(e.target, selector);\n\n if (e.delegateTarget) {\n callback.call(element, e);\n }\n }\n}\n\nmodule.exports = delegate;\n\n\n/***/ }),\n\n/***/ 879:\n/***/ (function(__unused_webpack_module, exports) {\n\n/**\n * Check if argument is a HTML element.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.node = function(value) {\n return value !== undefined\n && value instanceof HTMLElement\n && value.nodeType === 1;\n};\n\n/**\n * Check if argument is a list of HTML elements.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.nodeList = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return value !== undefined\n && (type === '[object NodeList]' || type === '[object HTMLCollection]')\n && ('length' in value)\n && (value.length === 0 || exports.node(value[0]));\n};\n\n/**\n * Check if argument is a string.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.string = function(value) {\n return typeof value === 'string'\n || value instanceof String;\n};\n\n/**\n * Check if argument is a function.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.fn = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return type === '[object Function]';\n};\n\n\n/***/ }),\n\n/***/ 370:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar is = __webpack_require__(879);\nvar delegate = __webpack_require__(438);\n\n/**\n * Validates all params and calls the right\n * listener function based on its target type.\n *\n * @param {String|HTMLElement|HTMLCollection|NodeList} target\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listen(target, type, callback) {\n if (!target && !type && !callback) {\n throw new Error('Missing required arguments');\n }\n\n if (!is.string(type)) {\n throw new TypeError('Second argument must be a String');\n }\n\n if (!is.fn(callback)) {\n throw new TypeError('Third argument must be a Function');\n }\n\n if (is.node(target)) {\n return listenNode(target, type, callback);\n }\n else if (is.nodeList(target)) {\n return listenNodeList(target, type, callback);\n }\n else if (is.string(target)) {\n return listenSelector(target, type, callback);\n }\n else {\n throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');\n }\n}\n\n/**\n * Adds an event listener to a HTML element\n * and returns a remove listener function.\n *\n * @param {HTMLElement} node\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNode(node, type, callback) {\n node.addEventListener(type, callback);\n\n return {\n destroy: function() {\n node.removeEventListener(type, callback);\n }\n }\n}\n\n/**\n * Add an event listener to a list of HTML elements\n * and returns a remove listener function.\n *\n * @param {NodeList|HTMLCollection} nodeList\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNodeList(nodeList, type, callback) {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.addEventListener(type, callback);\n });\n\n return {\n destroy: function() {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.removeEventListener(type, callback);\n });\n }\n }\n}\n\n/**\n * Add an event listener to a selector\n * and returns a remove listener function.\n *\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenSelector(selector, type, callback) {\n return delegate(document.body, selector, type, callback);\n}\n\nmodule.exports = listen;\n\n\n/***/ }),\n\n/***/ 817:\n/***/ (function(module) {\n\nfunction select(element) {\n var selectedText;\n\n if (element.nodeName === 'SELECT') {\n element.focus();\n\n selectedText = element.value;\n }\n else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {\n var isReadOnly = element.hasAttribute('readonly');\n\n if (!isReadOnly) {\n element.setAttribute('readonly', '');\n }\n\n element.select();\n element.setSelectionRange(0, element.value.length);\n\n if (!isReadOnly) {\n element.removeAttribute('readonly');\n }\n\n selectedText = element.value;\n }\n else {\n if (element.hasAttribute('contenteditable')) {\n element.focus();\n }\n\n var selection = window.getSelection();\n var range = document.createRange();\n\n range.selectNodeContents(element);\n selection.removeAllRanges();\n selection.addRange(range);\n\n selectedText = selection.toString();\n }\n\n return selectedText;\n}\n\nmodule.exports = select;\n\n\n/***/ }),\n\n/***/ 279:\n/***/ (function(module) {\n\nfunction E () {\n // Keep this empty so it's easier to inherit from\n // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n on: function (name, callback, ctx) {\n var e = this.e || (this.e = {});\n\n (e[name] || (e[name] = [])).push({\n fn: callback,\n ctx: ctx\n });\n\n return this;\n },\n\n once: function (name, callback, ctx) {\n var self = this;\n function listener () {\n self.off(name, listener);\n callback.apply(ctx, arguments);\n };\n\n listener._ = callback\n return this.on(name, listener, ctx);\n },\n\n emit: function (name) {\n var data = [].slice.call(arguments, 1);\n var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n var i = 0;\n var len = evtArr.length;\n\n for (i; i < len; i++) {\n evtArr[i].fn.apply(evtArr[i].ctx, data);\n }\n\n return this;\n },\n\n off: function (name, callback) {\n var e = this.e || (this.e = {});\n var evts = e[name];\n var liveEvents = [];\n\n if (evts && callback) {\n for (var i = 0, len = evts.length; i < len; i++) {\n if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n liveEvents.push(evts[i]);\n }\n }\n\n // Remove event from queue to prevent memory leak\n // Suggested by https://github.com/lazd\n // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n (liveEvents.length)\n ? e[name] = liveEvents\n : delete e[name];\n\n return this;\n }\n};\n\nmodule.exports = E;\nmodule.exports.TinyEmitter = E;\n\n\n/***/ })\n\n/******/ \t});\n/************************************************************************/\n/******/ \t// The module cache\n/******/ \tvar __webpack_module_cache__ = {};\n/******/ \t\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(__webpack_module_cache__[moduleId]) {\n/******/ \t\t\treturn __webpack_module_cache__[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = __webpack_module_cache__[moduleId] = {\n/******/ \t\t\t// no module.id needed\n/******/ \t\t\t// no module.loaded needed\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/ \t\n/******/ \t\t// Execute the module function\n/******/ \t\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n/******/ \t\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/ \t\n/************************************************************************/\n/******/ \t/* webpack/runtime/compat get default export */\n/******/ \t!function() {\n/******/ \t\t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t\t__webpack_require__.n = function(module) {\n/******/ \t\t\tvar getter = module && module.__esModule ?\n/******/ \t\t\t\tfunction() { return module['default']; } :\n/******/ \t\t\t\tfunction() { return module; };\n/******/ \t\t\t__webpack_require__.d(getter, { a: getter });\n/******/ \t\t\treturn getter;\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/define property getters */\n/******/ \t!function() {\n/******/ \t\t// define getter functions for harmony exports\n/******/ \t\t__webpack_require__.d = function(exports, definition) {\n/******/ \t\t\tfor(var key in definition) {\n/******/ \t\t\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n/******/ \t\t\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n/******/ \t\t\t\t}\n/******/ \t\t\t}\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/hasOwnProperty shorthand */\n/******/ \t!function() {\n/******/ \t\t__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }\n/******/ \t}();\n/******/ \t\n/************************************************************************/\n/******/ \t// module exports must be returned from runtime so entry inlining is disabled\n/******/ \t// startup\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(686);\n/******/ })()\n.default;\n});", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport \"focus-visible\"\n\nimport {\n EMPTY,\n NEVER,\n Observable,\n Subject,\n defer,\n delay,\n filter,\n map,\n merge,\n mergeWith,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"./_\"\nimport {\n at,\n getActiveElement,\n getOptionalElement,\n requestJSON,\n setLocation,\n setToggle,\n watchDocument,\n watchKeyboard,\n watchLocation,\n watchLocationTarget,\n watchMedia,\n watchPrint,\n watchScript,\n watchViewport\n} from \"./browser\"\nimport {\n getComponentElement,\n getComponentElements,\n mountAnnounce,\n mountBackToTop,\n mountConsent,\n mountContent,\n mountDialog,\n mountHeader,\n mountHeaderTitle,\n mountPalette,\n mountProgress,\n mountSearch,\n mountSearchHiglight,\n mountSidebar,\n mountSource,\n mountTableOfContents,\n mountTabs,\n watchHeader,\n watchMain\n} from \"./components\"\nimport {\n SearchIndex,\n setupClipboardJS,\n setupInstantNavigation,\n setupVersionSelector\n} from \"./integrations\"\nimport {\n patchEllipsis,\n patchIndeterminate,\n patchScrollfix,\n patchScrolllock\n} from \"./patches\"\nimport \"./polyfills\"\n\n/* ----------------------------------------------------------------------------\n * Functions - @todo refactor\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch search index\n *\n * @returns Search index observable\n */\nfunction fetchSearchIndex(): Observable<SearchIndex> {\n if (location.protocol === \"file:\") {\n return watchScript(\n `${new URL(\"search/search_index.js\", config.base)}`\n )\n .pipe(\n // @ts-ignore - @todo fix typings\n map(() => __index),\n shareReplay(1)\n )\n } else {\n return requestJSON<SearchIndex>(\n new URL(\"search/search_index.json\", config.base)\n )\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Application\n * ------------------------------------------------------------------------- */\n\n/* Yay, JavaScript is available */\ndocument.documentElement.classList.remove(\"no-js\")\ndocument.documentElement.classList.add(\"js\")\n\n/* Set up navigation observables and subjects */\nconst document$ = watchDocument()\nconst location$ = watchLocation()\nconst target$ = watchLocationTarget(location$)\nconst keyboard$ = watchKeyboard()\n\n/* Set up media observables */\nconst viewport$ = watchViewport()\nconst tablet$ = watchMedia(\"(min-width: 960px)\")\nconst screen$ = watchMedia(\"(min-width: 1220px)\")\nconst print$ = watchPrint()\n\n/* Retrieve search index, if search is enabled */\nconst config = configuration()\nconst index$ = document.forms.namedItem(\"search\")\n ? fetchSearchIndex()\n : NEVER\n\n/* Set up Clipboard.js integration */\nconst alert$ = new Subject<string>()\nsetupClipboardJS({ alert$ })\n\n/* Set up progress indicator */\nconst progress$ = new Subject<number>()\n\n/* Set up instant navigation, if enabled */\nif (feature(\"navigation.instant\"))\n setupInstantNavigation({ location$, viewport$, progress$ })\n .subscribe(document$)\n\n/* Set up version selector */\nif (config.version?.provider === \"mike\")\n setupVersionSelector({ document$ })\n\n/* Always close drawer and search on navigation */\nmerge(location$, target$)\n .pipe(\n delay(125)\n )\n .subscribe(() => {\n setToggle(\"drawer\", false)\n setToggle(\"search\", false)\n })\n\n/* Set up global keyboard handlers */\nkeyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Go to previous page */\n case \"p\":\n case \",\":\n const prev = getOptionalElement<HTMLLinkElement>(\"link[rel=prev]\")\n if (typeof prev !== \"undefined\")\n setLocation(prev)\n break\n\n /* Go to next page */\n case \"n\":\n case \".\":\n const next = getOptionalElement<HTMLLinkElement>(\"link[rel=next]\")\n if (typeof next !== \"undefined\")\n setLocation(next)\n break\n\n /* Expand navigation, see https://bit.ly/3ZjG5io */\n case \"Enter\":\n const active = getActiveElement()\n if (active instanceof HTMLLabelElement)\n active.click()\n }\n })\n\n/* Set up patches */\npatchEllipsis({ viewport$, document$ })\npatchIndeterminate({ document$, tablet$ })\npatchScrollfix({ document$ })\npatchScrolllock({ viewport$, tablet$ })\n\n/* Set up header and main area observable */\nconst header$ = watchHeader(getComponentElement(\"header\"), { viewport$ })\nconst main$ = document$\n .pipe(\n map(() => getComponentElement(\"main\")),\n switchMap(el => watchMain(el, { viewport$, header$ })),\n shareReplay(1)\n )\n\n/* Set up control component observables */\nconst control$ = merge(\n\n /* Consent */\n ...getComponentElements(\"consent\")\n .map(el => mountConsent(el, { target$ })),\n\n /* Dialog */\n ...getComponentElements(\"dialog\")\n .map(el => mountDialog(el, { alert$ })),\n\n /* Color palette */\n ...getComponentElements(\"palette\")\n .map(el => mountPalette(el)),\n\n /* Progress bar */\n ...getComponentElements(\"progress\")\n .map(el => mountProgress(el, { progress$ })),\n\n /* Search */\n ...getComponentElements(\"search\")\n .map(el => mountSearch(el, { index$, keyboard$ })),\n\n /* Repository information */\n ...getComponentElements(\"source\")\n .map(el => mountSource(el))\n)\n\n/* Set up content component observables */\nconst content$ = defer(() => merge(\n\n /* Announcement bar */\n ...getComponentElements(\"announce\")\n .map(el => mountAnnounce(el)),\n\n /* Content */\n ...getComponentElements(\"content\")\n .map(el => mountContent(el, { viewport$, target$, print$ })),\n\n /* Search highlighting */\n ...getComponentElements(\"content\")\n .map(el => feature(\"search.highlight\")\n ? mountSearchHiglight(el, { index$, location$ })\n : EMPTY\n ),\n\n /* Header */\n ...getComponentElements(\"header\")\n .map(el => mountHeader(el, { viewport$, header$, main$ })),\n\n /* Header title */\n ...getComponentElements(\"header-title\")\n .map(el => mountHeaderTitle(el, { viewport$, header$ })),\n\n /* Sidebar */\n ...getComponentElements(\"sidebar\")\n .map(el => el.getAttribute(\"data-md-type\") === \"navigation\"\n ? at(screen$, () => mountSidebar(el, { viewport$, header$, main$ }))\n : at(tablet$, () => mountSidebar(el, { viewport$, header$, main$ }))\n ),\n\n /* Navigation tabs */\n ...getComponentElements(\"tabs\")\n .map(el => mountTabs(el, { viewport$, header$ })),\n\n /* Table of contents */\n ...getComponentElements(\"toc\")\n .map(el => mountTableOfContents(el, {\n viewport$, header$, main$, target$\n })),\n\n /* Back-to-top button */\n ...getComponentElements(\"top\")\n .map(el => mountBackToTop(el, { viewport$, header$, main$, target$ }))\n))\n\n/* Set up component observables */\nconst component$ = document$\n .pipe(\n switchMap(() => content$),\n mergeWith(control$),\n shareReplay(1)\n )\n\n/* Subscribe to all components */\ncomponent$.subscribe()\n\n/* ----------------------------------------------------------------------------\n * Exports\n * ------------------------------------------------------------------------- */\n\nwindow.document$ = document$ /* Document observable */\nwindow.location$ = location$ /* Location subject */\nwindow.target$ = target$ /* Location target observable */\nwindow.keyboard$ = keyboard$ /* Keyboard observable */\nwindow.viewport$ = viewport$ /* Viewport observable */\nwindow.tablet$ = tablet$ /* Media tablet observable */\nwindow.screen$ = screen$ /* Media screen observable */\nwindow.print$ = print$ /* Media print observable */\nwindow.alert$ = alert$ /* Alert subject */\nwindow.progress$ = progress$ /* Progress indicator subject */\nwindow.component$ = component$ /* Component observable */\n", "/******************************************************************************\nCopyright (c) Microsoft Corporation.\n\nPermission to use, copy, modify, and/or distribute this software for any\npurpose with or without fee is hereby granted.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\nPERFORMANCE OF THIS SOFTWARE.\n***************************************************************************** */\n/* global Reflect, Promise, SuppressedError, Symbol, Iterator */\n\nvar extendStatics = function(d, b) {\n extendStatics = Object.setPrototypeOf ||\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\n return extendStatics(d, b);\n};\n\nexport function __extends(d, b) {\n if (typeof b !== \"function\" && b !== null)\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n extendStatics(d, b);\n function __() { this.constructor = d; }\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\n\nexport var __assign = function() {\n __assign = Object.assign || function __assign(t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n }\n return __assign.apply(this, arguments);\n}\n\nexport function __rest(s, e) {\n var t = {};\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\n t[p] = s[p];\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\n t[p[i]] = s[p[i]];\n }\n return t;\n}\n\nexport function __decorate(decorators, target, key, desc) {\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n return c > 3 && r && Object.defineProperty(target, key, r), r;\n}\n\nexport function __param(paramIndex, decorator) {\n return function (target, key) { decorator(target, key, paramIndex); }\n}\n\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\n var descriptor = descriptorIn || (target ? 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(function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n var desc = Object.getOwnPropertyDescriptor(m, k);\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\n desc = { enumerable: true, get: function() { return m[k]; } };\n }\n Object.defineProperty(o, k2, desc);\n}) : (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n o[k2] = m[k];\n});\n\nexport function __exportStar(m, o) {\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\n}\n\nexport function __values(o) {\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\n if (m) return m.call(o);\n if (o && typeof o.length === \"number\") return {\n next: function () {\n if (o && i >= o.length) o = void 0;\n return { value: o && o[i++], done: !o };\n }\n };\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\n\nexport function __read(o, n) {\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n if (!m) return o;\n var i = m.call(o), r, ar = [], e;\n try {\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\n }\n catch (error) { e = { error: error }; }\n finally {\n try {\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\n }\n finally { if (e) throw e.error; }\n }\n return ar;\n}\n\n/** @deprecated */\nexport function __spread() {\n for (var ar = [], i = 0; i < arguments.length; i++)\n ar = ar.concat(__read(arguments[i]));\n return ar;\n}\n\n/** @deprecated */\nexport function __spreadArrays() {\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\n r[k] = a[j];\n return r;\n}\n\nexport function __spreadArray(to, from, pack) {\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\n if (ar || !(i in from)) {\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\n ar[i] = from[i];\n }\n }\n return to.concat(ar || Array.prototype.slice.call(from));\n}\n\nexport function __await(v) {\n return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\n\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\n return i = Object.create((typeof AsyncIterator === \"function\" ? AsyncIterator : Object).prototype), verb(\"next\"), verb(\"throw\"), verb(\"return\", awaitReturn), i[Symbol.asyncIterator] = function () { return this; }, i;\n function awaitReturn(f) { return function (v) { return Promise.resolve(v).then(f, reject); }; }\n function verb(n, f) { if (g[n]) { i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; if (f) i[n] = f(i[n]); } }\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\n function fulfill(value) { resume(\"next\", value); }\n function reject(value) { resume(\"throw\", value); }\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\n}\n\nexport function __asyncDelegator(o) {\n var i, p;\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\n}\n\nexport function __asyncValues(o) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var m = o[Symbol.asyncIterator], i;\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\n}\n\nexport function __makeTemplateObject(cooked, raw) {\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\n return cooked;\n};\n\nvar __setModuleDefault = Object.create ? (function(o, v) {\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n o[\"default\"] = v;\n};\n\nexport function __importStar(mod) {\n if (mod && mod.__esModule) return mod;\n var result = {};\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n __setModuleDefault(result, mod);\n return result;\n}\n\nexport function __importDefault(mod) {\n return (mod && mod.__esModule) ? mod : { default: mod };\n}\n\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\n}\n\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\n}\n\nexport function __classPrivateFieldIn(state, receiver) {\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\n}\n\nexport function __addDisposableResource(env, value, async) {\n if (value !== null && value !== void 0) {\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\n var dispose, inner;\n if (async) {\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\n dispose = value[Symbol.asyncDispose];\n }\n if (dispose === void 0) {\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\n dispose = value[Symbol.dispose];\n if (async) inner = dispose;\n }\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\n if (inner) dispose = function() { try { inner.call(this); } catch (e) { return Promise.reject(e); } };\n env.stack.push({ value: value, dispose: dispose, async: async });\n }\n else if (async) {\n env.stack.push({ async: true });\n }\n return value;\n}\n\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\n var e = new Error(message);\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\n};\n\nexport function __disposeResources(env) {\n function fail(e) {\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\n env.hasError = true;\n }\n var r, s = 0;\n function next() {\n while (r = env.stack.pop()) {\n try {\n if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);\n if (r.dispose) {\n var result = r.dispose.call(r.value);\n if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\n }\n else s |= 1;\n }\n catch (e) {\n fail(e);\n }\n }\n if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();\n if (env.hasError) throw env.error;\n }\n return next();\n}\n\nexport default {\n __extends,\n __assign,\n __rest,\n __decorate,\n __param,\n __metadata,\n __awaiter,\n __generator,\n __createBinding,\n __exportStar,\n __values,\n __read,\n __spread,\n __spreadArrays,\n __spreadArray,\n __await,\n __asyncGenerator,\n __asyncDelegator,\n __asyncValues,\n __makeTemplateObject,\n __importStar,\n __importDefault,\n __classPrivateFieldGet,\n __classPrivateFieldSet,\n __classPrivateFieldIn,\n __addDisposableResource,\n __disposeResources,\n};\n", "/**\n * Returns true if the object is a function.\n * @param value The value to check\n */\nexport function isFunction(value: any): value is (...args: any[]) => any {\n return typeof value === 'function';\n}\n", "/**\n * Used to create Error subclasses until the community moves away from ES5.\n *\n * This is because compiling from TypeScript down to ES5 has issues with subclassing Errors\n * as well as other built-in types: https://github.com/Microsoft/TypeScript/issues/12123\n *\n * @param createImpl A factory function to create the actual constructor implementation. The returned\n * function should be a named function that calls `_super` internally.\n */\nexport function createErrorClass<T>(createImpl: (_super: any) => any): T {\n const _super = (instance: any) => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface UnsubscriptionError extends Error {\n readonly errors: any[];\n}\n\nexport interface UnsubscriptionErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (errors: any[]): UnsubscriptionError;\n}\n\n/**\n * An error thrown when one or more errors have occurred during the\n * `unsubscribe` of a {@link Subscription}.\n */\nexport const UnsubscriptionError: UnsubscriptionErrorCtor = createErrorClass(\n (_super) =>\n function UnsubscriptionErrorImpl(this: any, errors: (Error | string)[]) {\n _super(this);\n this.message = errors\n ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}`\n : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n }\n);\n", "/**\n * Removes an item from an array, mutating it.\n * @param arr The array to remove the item from\n * @param item The item to remove\n */\nexport function arrRemove<T>(arr: T[] | undefined | null, item: T) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { SubscriptionLike, TeardownLogic, Unsubscribable } from './types';\nimport { arrRemove } from './util/arrRemove';\n\n/**\n * Represents a disposable resource, such as the execution of an Observable. A\n * Subscription has one important method, `unsubscribe`, that takes no argument\n * and just disposes the resource held by the subscription.\n *\n * Additionally, subscriptions may be grouped together through the `add()`\n * method, which will attach a child Subscription to the current Subscription.\n * When a Subscription is unsubscribed, all its children (and its grandchildren)\n * will be unsubscribed as well.\n *\n * @class Subscription\n */\nexport class Subscription implements SubscriptionLike {\n /** @nocollapse */\n public static EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n })();\n\n /**\n * A flag to indicate whether this Subscription has already been unsubscribed.\n */\n public closed = false;\n\n private _parentage: Subscription[] | Subscription | null = null;\n\n /**\n * The list of registered finalizers to execute upon unsubscription. Adding and removing from this\n * list occurs in the {@link #add} and {@link #remove} methods.\n */\n private _finalizers: Exclude<TeardownLogic, void>[] | null = null;\n\n /**\n * @param initialTeardown A function executed first as part of the finalization\n * process that is kicked off when {@link #unsubscribe} is called.\n */\n constructor(private initialTeardown?: () => void) {}\n\n /**\n * Disposes the resources held by the subscription. May, for instance, cancel\n * an ongoing Observable execution or cancel any other type of work that\n * started when the Subscription was created.\n * @return {void}\n */\n unsubscribe(): void {\n let errors: any[] | undefined;\n\n if (!this.closed) {\n this.closed = true;\n\n // Remove this from it's parents.\n const { _parentage } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n } else {\n _parentage.remove(this);\n }\n }\n\n const { initialTeardown: initialFinalizer } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n } catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n\n const { _finalizers } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n } catch (err) {\n errors = errors ?? [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n } else {\n errors.push(err);\n }\n }\n }\n }\n\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n\n /**\n * Adds a finalizer to this subscription, so that finalization will be unsubscribed/called\n * when this subscription is unsubscribed. If this subscription is already {@link #closed},\n * because it has already been unsubscribed, then whatever finalizer is passed to it\n * will automatically be executed (unless the finalizer itself is also a closed subscription).\n *\n * Closed Subscriptions cannot be added as finalizers to any subscription. Adding a closed\n * subscription to a any subscription will result in no operation. (A noop).\n *\n * Adding a subscription to itself, or adding `null` or `undefined` will not perform any\n * operation at all. (A noop).\n *\n * `Subscription` instances that are added to this instance will automatically remove themselves\n * if they are unsubscribed. Functions and {@link Unsubscribable} objects that you wish to remove\n * will need to be removed manually with {@link #remove}\n *\n * @param teardown The finalization logic to add to this subscription.\n */\n add(teardown: TeardownLogic): void {\n // Only add the finalizer if it's not undefined\n // and don't add a subscription to itself.\n if (teardown && teardown !== this) {\n if (this.closed) {\n // If this subscription is already closed,\n // execute whatever finalizer is handed to it automatically.\n execFinalizer(teardown);\n } else {\n if (teardown instanceof Subscription) {\n // We don't add closed subscriptions, and we don't add the same subscription\n // twice. Subscription unsubscribe is idempotent.\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = this._finalizers ?? []).push(teardown);\n }\n }\n }\n\n /**\n * Checks to see if a this subscription already has a particular parent.\n * This will signal that this subscription has already been added to the parent in question.\n * @param parent the parent to check for\n */\n private _hasParent(parent: Subscription) {\n const { _parentage } = this;\n return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));\n }\n\n /**\n * Adds a parent to this subscription so it can be removed from the parent if it\n * unsubscribes on it's own.\n *\n * NOTE: THIS ASSUMES THAT {@link _hasParent} HAS ALREADY BEEN CHECKED.\n * @param parent The parent subscription to add\n */\n private _addParent(parent: Subscription) {\n const { _parentage } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n\n /**\n * Called on a child when it is removed via {@link #remove}.\n * @param parent The parent to remove\n */\n private _removeParent(parent: Subscription) {\n const { _parentage } = this;\n if (_parentage === parent) {\n this._parentage = null;\n } else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n\n /**\n * Removes a finalizer from this subscription that was previously added with the {@link #add} method.\n *\n * Note that `Subscription` instances, when unsubscribed, will automatically remove themselves\n * from every other `Subscription` they have been added to. This means that using the `remove` method\n * is not a common thing and should be used thoughtfully.\n *\n * If you add the same finalizer instance of a function or an unsubscribable object to a `Subscription` instance\n * more than once, you will need to call `remove` the same number of times to remove all instances.\n *\n * All finalizer instances are removed to free up memory upon unsubscription.\n *\n * @param teardown The finalizer to remove from this subscription\n */\n remove(teardown: Exclude<TeardownLogic, void>): void {\n const { _finalizers } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\n\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\n\nexport function isSubscription(value: any): value is Subscription {\n return (\n value instanceof Subscription ||\n (value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe))\n );\n}\n\nfunction execFinalizer(finalizer: Unsubscribable | (() => void)) {\n if (isFunction(finalizer)) {\n finalizer();\n } else {\n finalizer.unsubscribe();\n }\n}\n", "import { Subscriber } from './Subscriber';\nimport { ObservableNotification } from './types';\n\n/**\n * The {@link GlobalConfig} object for RxJS. It is used to configure things\n * like how to react on unhandled errors.\n */\nexport const config: GlobalConfig = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false,\n};\n\n/**\n * The global configuration object for RxJS, used to configure things\n * like how to react on unhandled errors. Accessible via {@link config}\n * object.\n */\nexport interface GlobalConfig {\n /**\n * A registration point for unhandled errors from RxJS. These are errors that\n * cannot were not handled by consuming code in the usual subscription path. For\n * example, if you have this configured, and you subscribe to an observable without\n * providing an error handler, errors from that subscription will end up here. This\n * will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onUnhandledError: ((err: any) => void) | null;\n\n /**\n * A registration point for notifications that cannot be sent to subscribers because they\n * have completed, errored or have been explicitly unsubscribed. By default, next, complete\n * and error notifications sent to stopped subscribers are noops. However, sometimes callers\n * might want a different behavior. For example, with sources that attempt to report errors\n * to stopped subscribers, a caller can configure RxJS to throw an unhandled error instead.\n * This will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onStoppedNotification: ((notification: ObservableNotification<any>, subscriber: Subscriber<any>) => void) | null;\n\n /**\n * The promise constructor used by default for {@link Observable#toPromise toPromise} and {@link Observable#forEach forEach}\n * methods.\n *\n * @deprecated As of version 8, RxJS will no longer support this sort of injection of a\n * Promise constructor. If you need a Promise implementation other than native promises,\n * please polyfill/patch Promise as you see appropriate. Will be removed in v8.\n */\n Promise?: PromiseConstructorLike;\n\n /**\n * If true, turns on synchronous error rethrowing, which is a deprecated behavior\n * in v6 and higher. This behavior enables bad patterns like wrapping a subscribe\n * call in a try/catch block. It also enables producer interference, a nasty bug\n * where a multicast can be broken for all observers by a downstream consumer with\n * an unhandled error. DO NOT USE THIS FLAG UNLESS IT'S NEEDED TO BUY TIME\n * FOR MIGRATION REASONS.\n *\n * @deprecated As of version 8, RxJS will no longer support synchronous throwing\n * of unhandled errors. All errors will be thrown on a separate call stack to prevent bad\n * behaviors described above. Will be removed in v8.\n */\n useDeprecatedSynchronousErrorHandling: boolean;\n\n /**\n * If true, enables an as-of-yet undocumented feature from v5: The ability to access\n * `unsubscribe()` via `this` context in `next` functions created in observers passed\n * to `subscribe`.\n *\n * This is being removed because the performance was severely problematic, and it could also cause\n * issues when types other than POJOs are passed to subscribe as subscribers, as they will likely have\n * their `this` context overwritten.\n *\n * @deprecated As of version 8, RxJS will no longer support altering the\n * context of next functions provided as part of an observer to Subscribe. Instead,\n * you will have access to a subscription or a signal or token that will allow you to do things like\n * unsubscribe and test closed status. Will be removed in v8.\n */\n useDeprecatedNextContext: boolean;\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetTimeoutFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearTimeoutFunction = (handle: TimerHandle) => void;\n\ninterface TimeoutProvider {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n delegate:\n | {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n }\n | undefined;\n}\n\nexport const timeoutProvider: TimeoutProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setTimeout(handler: () => void, timeout?: number, ...args) {\n const { delegate } = timeoutProvider;\n if (delegate?.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const { delegate } = timeoutProvider;\n return (delegate?.clearTimeout || clearTimeout)(handle as any);\n },\n delegate: undefined,\n};\n", "import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\n\n/**\n * Handles an error on another job either with the user-configured {@link onUnhandledError},\n * or by throwing it on that new job so it can be picked up by `window.onerror`, `process.on('error')`, etc.\n *\n * This should be called whenever there is an error that is out-of-band with the subscription\n * or when an error hits a terminal boundary of the subscription and no error handler was provided.\n *\n * @param err the error to report\n */\nexport function reportUnhandledError(err: any) {\n timeoutProvider.setTimeout(() => {\n const { onUnhandledError } = config;\n if (onUnhandledError) {\n // Execute the user-configured error handler.\n onUnhandledError(err);\n } else {\n // Throw so it is picked up by the runtime's uncaught error mechanism.\n throw err;\n }\n });\n}\n", "/* tslint:disable:no-empty */\nexport function noop() { }\n", "import { CompleteNotification, NextNotification, ErrorNotification } from './types';\n\n/**\n * A completion object optimized for memory use and created to be the\n * same \"shape\" as other notifications in v8.\n * @internal\n */\nexport const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined) as CompleteNotification)();\n\n/**\n * Internal use only. Creates an optimized error notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function errorNotification(error: any): ErrorNotification {\n return createNotification('E', undefined, error) as any;\n}\n\n/**\n * Internal use only. Creates an optimized next notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function nextNotification<T>(value: T) {\n return createNotification('N', value, undefined) as NextNotification<T>;\n}\n\n/**\n * Ensures that all notifications created internally have the same \"shape\" in v8.\n *\n * TODO: This is only exported to support a crazy legacy test in `groupBy`.\n * @internal\n */\nexport function createNotification(kind: 'N' | 'E' | 'C', value: any, error: any) {\n return {\n kind,\n value,\n error,\n };\n}\n", "import { config } from '../config';\n\nlet context: { errorThrown: boolean; error: any } | null = null;\n\n/**\n * Handles dealing with errors for super-gross mode. Creates a context, in which\n * any synchronously thrown errors will be passed to {@link captureError}. Which\n * will record the error such that it will be rethrown after the call back is complete.\n * TODO: Remove in v8\n * @param cb An immediately executed function.\n */\nexport function errorContext(cb: () => void) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = { errorThrown: false, error: null };\n }\n cb();\n if (isRoot) {\n const { errorThrown, error } = context!;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n } else {\n // This is the general non-deprecated path for everyone that\n // isn't crazy enough to use super-gross mode (useDeprecatedSynchronousErrorHandling)\n cb();\n }\n}\n\n/**\n * Captures errors only in super-gross mode.\n * @param err the error to capture\n */\nexport function captureError(err: any) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { Observer, ObservableNotification } from './types';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\n\n/**\n * Implements the {@link Observer} interface and extends the\n * {@link Subscription} class. While the {@link Observer} is the public API for\n * consuming the values of an {@link Observable}, all Observers get converted to\n * a Subscriber, in order to provide Subscription-like capabilities such as\n * `unsubscribe`. Subscriber is a common type in RxJS, and crucial for\n * implementing operators, but it is rarely used as a public API.\n *\n * @class Subscriber<T>\n */\nexport class Subscriber<T> extends Subscription implements Observer<T> {\n /**\n * A static factory for a Subscriber, given a (potentially partial) definition\n * of an Observer.\n * @param next The `next` callback of an Observer.\n * @param error The `error` callback of an\n * Observer.\n * @param complete The `complete` callback of an\n * Observer.\n * @return A Subscriber wrapping the (partially defined)\n * Observer represented by the given arguments.\n * @nocollapse\n * @deprecated Do not use. Will be removed in v8. There is no replacement for this\n * method, and there is no reason to be creating instances of `Subscriber` directly.\n * If you have a specific use case, please file an issue.\n */\n static create<T>(next?: (x?: T) => void, error?: (e?: any) => void, complete?: () => void): Subscriber<T> {\n return new SafeSubscriber(next, error, complete);\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected isStopped: boolean = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected destination: Subscriber<any> | Observer<any>; // this `any` is the escape hatch to erase extra type param (e.g. R)\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * There is no reason to directly create an instance of Subscriber. This type is exported for typings reasons.\n */\n constructor(destination?: Subscriber<any> | Observer<any>) {\n super();\n if (destination) {\n this.destination = destination;\n // Automatically chain subscriptions together here.\n // if destination is a Subscription, then it is a Subscriber.\n if (isSubscription(destination)) {\n destination.add(this);\n }\n } else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `next` from\n * the Observable, with a value. The Observable may call this method 0 or more\n * times.\n * @param {T} [value] The `next` value.\n * @return {void}\n */\n next(value?: T): void {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n } else {\n this._next(value!);\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `error` from\n * the Observable, with an attached `Error`. Notifies the Observer that\n * the Observable has experienced an error condition.\n * @param {any} [err] The `error` exception.\n * @return {void}\n */\n error(err?: any): void {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n } else {\n this.isStopped = true;\n this._error(err);\n }\n }\n\n /**\n * The {@link Observer} callback to receive a valueless notification of type\n * `complete` from the Observable. Notifies the Observer that the Observable\n * has finished sending push-based notifications.\n * @return {void}\n */\n complete(): void {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n } else {\n this.isStopped = true;\n this._complete();\n }\n }\n\n unsubscribe(): void {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null!;\n }\n }\n\n protected _next(value: T): void {\n this.destination.next(value);\n }\n\n protected _error(err: any): void {\n try {\n this.destination.error(err);\n } finally {\n this.unsubscribe();\n }\n }\n\n protected _complete(): void {\n try {\n this.destination.complete();\n } finally {\n this.unsubscribe();\n }\n }\n}\n\n/**\n * This bind is captured here because we want to be able to have\n * compatibility with monoid libraries that tend to use a method named\n * `bind`. In particular, a library called Monio requires this.\n */\nconst _bind = Function.prototype.bind;\n\nfunction bind<Fn extends (...args: any[]) => any>(fn: Fn, thisArg: any): Fn {\n return _bind.call(fn, thisArg);\n}\n\n/**\n * Internal optimization only, DO NOT EXPOSE.\n * @internal\n */\nclass ConsumerObserver<T> implements Observer<T> {\n constructor(private partialObserver: Partial<Observer<T>>) {}\n\n next(value: T): void {\n const { partialObserver } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n\n error(err: any): void {\n const { partialObserver } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n } catch (error) {\n handleUnhandledError(error);\n }\n } else {\n handleUnhandledError(err);\n }\n }\n\n complete(): void {\n const { partialObserver } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\n\nexport class SafeSubscriber<T> extends Subscriber<T> {\n constructor(\n observerOrNext?: Partial<Observer<T>> | ((value: T) => void) | null,\n error?: ((e?: any) => void) | null,\n complete?: (() => void) | null\n ) {\n super();\n\n let partialObserver: Partial<Observer<T>>;\n if (isFunction(observerOrNext) || !observerOrNext) {\n // The first argument is a function, not an observer. The next\n // two arguments *could* be observers, or they could be empty.\n partialObserver = {\n next: (observerOrNext ?? undefined) as (((value: T) => void) | undefined),\n error: error ?? undefined,\n complete: complete ?? undefined,\n };\n } else {\n // The first argument is a partial observer.\n let context: any;\n if (this && config.useDeprecatedNextContext) {\n // This is a deprecated path that made `this.unsubscribe()` available in\n // next handler functions passed to subscribe. This only exists behind a flag\n // now, as it is *very* slow.\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context),\n };\n } else {\n // The \"normal\" path. Just use the partial observer directly.\n partialObserver = observerOrNext;\n }\n }\n\n // Wrap the partial observer to ensure it's a full observer, and\n // make sure proper error handling is accounted for.\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\n\nfunction handleUnhandledError(error: any) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n } else {\n // Ideal path, we report this as an unhandled error,\n // which is thrown on a new call stack.\n reportUnhandledError(error);\n }\n}\n\n/**\n * An error handler used when no error handler was supplied\n * to the SafeSubscriber -- meaning no error handler was supplied\n * do the `subscribe` call on our observable.\n * @param err The error to handle\n */\nfunction defaultErrorHandler(err: any) {\n throw err;\n}\n\n/**\n * A handler for notifications that cannot be sent to a stopped subscriber.\n * @param notification The notification being sent\n * @param subscriber The stopped subscriber\n */\nfunction handleStoppedNotification(notification: ObservableNotification<any>, subscriber: Subscriber<any>) {\n const { onStoppedNotification } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\n\n/**\n * The observer used as a stub for subscriptions where the user did not\n * pass any arguments to `subscribe`. Comes with the default error handling\n * behavior.\n */\nexport const EMPTY_OBSERVER: Readonly<Observer<any>> & { closed: true } = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop,\n};\n", "/**\n * Symbol.observable or a string \"@@observable\". Used for interop\n *\n * @deprecated We will no longer be exporting this symbol in upcoming versions of RxJS.\n * Instead polyfill and use Symbol.observable directly *or* use https://www.npmjs.com/package/symbol-observable\n */\nexport const observable: string | symbol = (() => (typeof Symbol === 'function' && Symbol.observable) || '@@observable')();\n", "/**\n * This function takes one parameter and just returns it. Simply put,\n * this is like `<T>(x: T): T => x`.\n *\n * ## Examples\n *\n * This is useful in some cases when using things like `mergeMap`\n *\n * ```ts\n * import { interval, take, map, range, mergeMap, identity } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(5));\n *\n * const result$ = source$.pipe(\n * map(i => range(i)),\n * mergeMap(identity) // same as mergeMap(x => x)\n * );\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * Or when you want to selectively apply an operator\n *\n * ```ts\n * import { interval, take, identity } from 'rxjs';\n *\n * const shouldLimit = () => Math.random() < 0.5;\n *\n * const source$ = interval(1000);\n *\n * const result$ = source$.pipe(shouldLimit() ? take(5) : identity);\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * @param x Any value that is returned by this function\n * @returns The value passed as the first parameter to this function\n */\nexport function identity<T>(x: T): T {\n return x;\n}\n", "import { identity } from './identity';\nimport { UnaryFunction } from '../types';\n\nexport function pipe(): typeof identity;\nexport function pipe<T, A>(fn1: UnaryFunction<T, A>): UnaryFunction<T, A>;\nexport function pipe<T, A, B>(fn1: UnaryFunction<T, A>, fn2: UnaryFunction<A, B>): UnaryFunction<T, B>;\nexport function pipe<T, A, B, C>(fn1: UnaryFunction<T, A>, fn2: UnaryFunction<A, B>, fn3: UnaryFunction<B, C>): UnaryFunction<T, C>;\nexport function pipe<T, A, B, C, D>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>\n): UnaryFunction<T, D>;\nexport function pipe<T, A, B, C, D, E>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>\n): UnaryFunction<T, E>;\nexport function pipe<T, A, B, C, D, E, F>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>\n): UnaryFunction<T, F>;\nexport function pipe<T, A, B, C, D, E, F, G>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>\n): UnaryFunction<T, G>;\nexport function pipe<T, A, B, C, D, E, F, G, H>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>,\n fn8: UnaryFunction<G, H>\n): UnaryFunction<T, H>;\nexport function pipe<T, A, B, C, D, E, F, G, H, I>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>,\n fn8: UnaryFunction<G, H>,\n fn9: UnaryFunction<H, I>\n): UnaryFunction<T, I>;\nexport function pipe<T, A, B, C, D, E, F, G, H, I>(\n fn1: UnaryFunction<T, A>,\n fn2: UnaryFunction<A, B>,\n fn3: UnaryFunction<B, C>,\n fn4: UnaryFunction<C, D>,\n fn5: UnaryFunction<D, E>,\n fn6: UnaryFunction<E, F>,\n fn7: UnaryFunction<F, G>,\n fn8: UnaryFunction<G, H>,\n fn9: UnaryFunction<H, I>,\n ...fns: UnaryFunction<any, any>[]\n): UnaryFunction<T, unknown>;\n\n/**\n * pipe() can be called on one or more functions, each of which can take one argument (\"UnaryFunction\")\n * and uses it to return a value.\n * It returns a function that takes one argument, passes it to the first UnaryFunction, and then\n * passes the result to the next one, passes that result to the next one, and so on. \n */\nexport function pipe(...fns: Array<UnaryFunction<any, any>>): UnaryFunction<any, any> {\n return pipeFromArray(fns);\n}\n\n/** @internal */\nexport function pipeFromArray<T, R>(fns: Array<UnaryFunction<T, R>>): UnaryFunction<T, R> {\n if (fns.length === 0) {\n return identity as UnaryFunction<any, any>;\n }\n\n if (fns.length === 1) {\n return fns[0];\n }\n\n return function piped(input: T): R {\n return fns.reduce((prev: any, fn: UnaryFunction<T, R>) => fn(prev), input as any);\n };\n}\n", "import { Operator } from './Operator';\nimport { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription, Subscription } from './Subscription';\nimport { TeardownLogic, OperatorFunction, Subscribable, Observer } from './types';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A representation of any set of values over any amount of time. This is the most basic building block\n * of RxJS.\n *\n * @class Observable<T>\n */\nexport class Observable<T> implements Subscribable<T> {\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n source: Observable<any> | undefined;\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n operator: Operator<any, T> | undefined;\n\n /**\n * @constructor\n * @param {Function} subscribe the function that is called when the Observable is\n * initially subscribed to. This function is given a Subscriber, to which new values\n * can be `next`ed, or an `error` method can be called to raise an error, or\n * `complete` can be called to notify of a successful completion.\n */\n constructor(subscribe?: (this: Observable<T>, subscriber: Subscriber<T>) => TeardownLogic) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n\n // HACK: Since TypeScript inherits static properties too, we have to\n // fight against TypeScript here so Subject can have a different static create signature\n /**\n * Creates a new Observable by calling the Observable constructor\n * @owner Observable\n * @method create\n * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor\n * @return {Observable} a new observable\n * @nocollapse\n * @deprecated Use `new Observable()` instead. Will be removed in v8.\n */\n static create: (...args: any[]) => any = <T>(subscribe?: (subscriber: Subscriber<T>) => TeardownLogic) => {\n return new Observable<T>(subscribe);\n };\n\n /**\n * Creates a new Observable, with this Observable instance as the source, and the passed\n * operator defined as the new observable's operator.\n * @method lift\n * @param operator the operator defining the operation to take on the observable\n * @return a new observable with the Operator applied\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * If you have implemented an operator using `lift`, it is recommended that you create an\n * operator by simply returning `new Observable()` directly. See \"Creating new operators from\n * scratch\" section here: https://rxjs.dev/guide/operators\n */\n lift<R>(operator?: Operator<T, R>): Observable<R> {\n const observable = new Observable<R>();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n\n subscribe(observerOrNext?: Partial<Observer<T>> | ((value: T) => void)): Subscription;\n /** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\n subscribe(next?: ((value: T) => void) | null, error?: ((error: any) => void) | null, complete?: (() => void) | null): Subscription;\n /**\n * Invokes an execution of an Observable and registers Observer handlers for notifications it will emit.\n *\n * <span class=\"informal\">Use it when you have all these Observables, but still nothing is happening.</span>\n *\n * `subscribe` is not a regular operator, but a method that calls Observable's internal `subscribe` function. It\n * might be for example a function that you passed to Observable's constructor, but most of the time it is\n * a library implementation, which defines what will be emitted by an Observable, and when it be will emitted. This means\n * that calling `subscribe` is actually the moment when Observable starts its work, not when it is created, as it is often\n * the thought.\n *\n * Apart from starting the execution of an Observable, this method allows you to listen for values\n * that an Observable emits, as well as for when it completes or errors. You can achieve this in two\n * of the following ways.\n *\n * The first way is creating an object that implements {@link Observer} interface. It should have methods\n * defined by that interface, but note that it should be just a regular JavaScript object, which you can create\n * yourself in any way you want (ES6 class, classic function constructor, object literal etc.). In particular, do\n * not attempt to use any RxJS implementation details to create Observers - you don't need them. Remember also\n * that your object does not have to implement all methods. If you find yourself creating a method that doesn't\n * do anything, you can simply omit it. Note however, if the `error` method is not provided and an error happens,\n * it will be thrown asynchronously. Errors thrown asynchronously cannot be caught using `try`/`catch`. Instead,\n * use the {@link onUnhandledError} configuration option or use a runtime handler (like `window.onerror` or\n * `process.on('error)`) to be notified of unhandled errors. Because of this, it's recommended that you provide\n * an `error` method to avoid missing thrown errors.\n *\n * The second way is to give up on Observer object altogether and simply provide callback functions in place of its methods.\n * This means you can provide three functions as arguments to `subscribe`, where the first function is equivalent\n * of a `next` method, the second of an `error` method and the third of a `complete` method. Just as in case of an Observer,\n * if you do not need to listen for something, you can omit a function by passing `undefined` or `null`,\n * since `subscribe` recognizes these functions by where they were placed in function call. When it comes\n * to the `error` function, as with an Observer, if not provided, errors emitted by an Observable will be thrown asynchronously.\n *\n * You can, however, subscribe with no parameters at all. This may be the case where you're not interested in terminal events\n * and you also handled emissions internally by using operators (e.g. using `tap`).\n *\n * Whichever style of calling `subscribe` you use, in both cases it returns a Subscription object.\n * This object allows you to call `unsubscribe` on it, which in turn will stop the work that an Observable does and will clean\n * up all resources that an Observable used. Note that cancelling a subscription will not call `complete` callback\n * provided to `subscribe` function, which is reserved for a regular completion signal that comes from an Observable.\n *\n * Remember that callbacks provided to `subscribe` are not guaranteed to be called asynchronously.\n * It is an Observable itself that decides when these functions will be called. For example {@link of}\n * by default emits all its values synchronously. Always check documentation for how given Observable\n * will behave when subscribed and if its default behavior can be modified with a `scheduler`.\n *\n * #### Examples\n *\n * Subscribe with an {@link guide/observer Observer}\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * const sumObserver = {\n * sum: 0,\n * next(value) {\n * console.log('Adding: ' + value);\n * this.sum = this.sum + value;\n * },\n * error() {\n * // We actually could just remove this method,\n * // since we do not really care about errors right now.\n * },\n * complete() {\n * console.log('Sum equals: ' + this.sum);\n * }\n * };\n *\n * of(1, 2, 3) // Synchronously emits 1, 2, 3 and then completes.\n * .subscribe(sumObserver);\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Subscribe with functions ({@link deprecations/subscribe-arguments deprecated})\n *\n * ```ts\n * import { of } from 'rxjs'\n *\n * let sum = 0;\n *\n * of(1, 2, 3).subscribe(\n * value => {\n * console.log('Adding: ' + value);\n * sum = sum + value;\n * },\n * undefined,\n * () => console.log('Sum equals: ' + sum)\n * );\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Cancel a subscription\n *\n * ```ts\n * import { interval } from 'rxjs';\n *\n * const subscription = interval(1000).subscribe({\n * next(num) {\n * console.log(num)\n * },\n * complete() {\n * // Will not be called, even when cancelling subscription.\n * console.log('completed!');\n * }\n * });\n *\n * setTimeout(() => {\n * subscription.unsubscribe();\n * console.log('unsubscribed!');\n * }, 2500);\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 'unsubscribed!' after 2.5s\n * ```\n *\n * @param {Observer|Function} observerOrNext (optional) Either an observer with methods to be called,\n * or the first of three possible handlers, which is the handler for each value emitted from the subscribed\n * Observable.\n * @param {Function} error (optional) A handler for a terminal event resulting from an error. If no error handler is provided,\n * the error will be thrown asynchronously as unhandled.\n * @param {Function} complete (optional) A handler for a terminal event resulting from successful completion.\n * @return {Subscription} a subscription reference to the registered handlers\n * @method subscribe\n */\n subscribe(\n observerOrNext?: Partial<Observer<T>> | ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n ): Subscription {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n\n errorContext(() => {\n const { operator, source } = this;\n subscriber.add(\n operator\n ? // We're dealing with a subscription in the\n // operator chain to one of our lifted operators.\n operator.call(subscriber, source)\n : source\n ? // If `source` has a value, but `operator` does not, something that\n // had intimate knowledge of our API, like our `Subject`, must have\n // set it. We're going to just call `_subscribe` directly.\n this._subscribe(subscriber)\n : // In all other cases, we're likely wrapping a user-provided initializer\n // function, so we need to catch errors and handle them appropriately.\n this._trySubscribe(subscriber)\n );\n });\n\n return subscriber;\n }\n\n /** @internal */\n protected _trySubscribe(sink: Subscriber<T>): TeardownLogic {\n try {\n return this._subscribe(sink);\n } catch (err) {\n // We don't need to return anything in this case,\n // because it's just going to try to `add()` to a subscription\n // above.\n sink.error(err);\n }\n }\n\n /**\n * Used as a NON-CANCELLABLE means of subscribing to an observable, for use with\n * APIs that expect promises, like `async/await`. You cannot unsubscribe from this.\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * #### Example\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(4));\n *\n * async function getTotal() {\n * let total = 0;\n *\n * await source$.forEach(value => {\n * total += value;\n * console.log('observable -> ' + value);\n * });\n *\n * return total;\n * }\n *\n * getTotal().then(\n * total => console.log('Total: ' + total)\n * );\n *\n * // Expected:\n * // 'observable -> 0'\n * // 'observable -> 1'\n * // 'observable -> 2'\n * // 'observable -> 3'\n * // 'Total: 6'\n * ```\n *\n * @param next a handler for each value emitted by the observable\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n */\n forEach(next: (value: T) => void): Promise<void>;\n\n /**\n * @param next a handler for each value emitted by the observable\n * @param promiseCtor a constructor function used to instantiate the Promise\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n * @deprecated Passing a Promise constructor will no longer be available\n * in upcoming versions of RxJS. This is because it adds weight to the library, for very\n * little benefit. If you need this functionality, it is recommended that you either\n * polyfill Promise, or you create an adapter to convert the returned native promise\n * to whatever promise implementation you wanted. Will be removed in v8.\n */\n forEach(next: (value: T) => void, promiseCtor: PromiseConstructorLike): Promise<void>;\n\n forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise<void> {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor<void>((resolve, reject) => {\n const subscriber = new SafeSubscriber<T>({\n next: (value) => {\n try {\n next(value);\n } catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve,\n });\n this.subscribe(subscriber);\n }) as Promise<void>;\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<any>): TeardownLogic {\n return this.source?.subscribe(subscriber);\n }\n\n /**\n * An interop point defined by the es7-observable spec https://github.com/zenparsing/es-observable\n * @method Symbol.observable\n * @return {Observable} this instance of the observable\n */\n [Symbol_observable]() {\n return this;\n }\n\n /* tslint:disable:max-line-length */\n pipe(): Observable<T>;\n pipe<A>(op1: OperatorFunction<T, A>): Observable<A>;\n pipe<A, B>(op1: OperatorFunction<T, A>, op2: OperatorFunction<A, B>): Observable<B>;\n pipe<A, B, C>(op1: OperatorFunction<T, A>, op2: OperatorFunction<A, B>, op3: OperatorFunction<B, C>): Observable<C>;\n pipe<A, B, C, D>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>\n ): Observable<D>;\n pipe<A, B, C, D, E>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>\n ): Observable<E>;\n pipe<A, B, C, D, E, F>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>\n ): Observable<F>;\n pipe<A, B, C, D, E, F, G>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>\n ): Observable<G>;\n pipe<A, B, C, D, E, F, G, H>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>,\n op8: OperatorFunction<G, H>\n ): Observable<H>;\n pipe<A, B, C, D, E, F, G, H, I>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>,\n op8: OperatorFunction<G, H>,\n op9: OperatorFunction<H, I>\n ): Observable<I>;\n pipe<A, B, C, D, E, F, G, H, I>(\n op1: OperatorFunction<T, A>,\n op2: OperatorFunction<A, B>,\n op3: OperatorFunction<B, C>,\n op4: OperatorFunction<C, D>,\n op5: OperatorFunction<D, E>,\n op6: OperatorFunction<E, F>,\n op7: OperatorFunction<F, G>,\n op8: OperatorFunction<G, H>,\n op9: OperatorFunction<H, I>,\n ...operations: OperatorFunction<any, any>[]\n ): Observable<unknown>;\n /* tslint:enable:max-line-length */\n\n /**\n * Used to stitch together functional operators into a chain.\n * @method pipe\n * @return {Observable} the Observable result of all of the operators having\n * been called in the order they were passed in.\n *\n * ## Example\n *\n * ```ts\n * import { interval, filter, map, scan } from 'rxjs';\n *\n * interval(1000)\n * .pipe(\n * filter(x => x % 2 === 0),\n * map(x => x + x),\n * scan((acc, x) => acc + x)\n * )\n * .subscribe(x => console.log(x));\n * ```\n */\n pipe(...operations: OperatorFunction<any, any>[]): Observable<any> {\n return pipeFromArray(operations)(this);\n }\n\n /* tslint:disable:max-line-length */\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(): Promise<T | undefined>;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: typeof Promise): Promise<T | undefined>;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: PromiseConstructorLike): Promise<T | undefined>;\n /* tslint:enable:max-line-length */\n\n /**\n * Subscribe to this Observable and get a Promise resolving on\n * `complete` with the last emission (if any).\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * @method toPromise\n * @param [promiseCtor] a constructor function used to instantiate\n * the Promise\n * @return A Promise that resolves with the last value emit, or\n * rejects on an error. If there were no emissions, Promise\n * resolves with undefined.\n * @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise\n */\n toPromise(promiseCtor?: PromiseConstructorLike): Promise<T | undefined> {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n let value: T | undefined;\n this.subscribe(\n (x: T) => (value = x),\n (err: any) => reject(err),\n () => resolve(value)\n );\n }) as Promise<T | undefined>;\n }\n}\n\n/**\n * Decides between a passed promise constructor from consuming code,\n * A default configured promise constructor, and the native promise\n * constructor and returns it. If nothing can be found, it will throw\n * an error.\n * @param promiseCtor The optional promise constructor to passed by consuming code\n */\nfunction getPromiseCtor(promiseCtor: PromiseConstructorLike | undefined) {\n return promiseCtor ?? config.Promise ?? Promise;\n}\n\nfunction isObserver<T>(value: any): value is Observer<T> {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\n\nfunction isSubscriber<T>(value: any): value is Subscriber<T> {\n return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { OperatorFunction } from '../types';\nimport { isFunction } from './isFunction';\n\n/**\n * Used to determine if an object is an Observable with a lift function.\n */\nexport function hasLift(source: any): source is { lift: InstanceType<typeof Observable>['lift'] } {\n return isFunction(source?.lift);\n}\n\n/**\n * Creates an `OperatorFunction`. Used to define operators throughout the library in a concise way.\n * @param init The logic to connect the liftedSource to the subscriber at the moment of subscription.\n */\nexport function operate<T, R>(\n init: (liftedSource: Observable<T>, subscriber: Subscriber<R>) => (() => void) | void\n): OperatorFunction<T, R> {\n return (source: Observable<T>) => {\n if (hasLift(source)) {\n return source.lift(function (this: Subscriber<R>, liftedSource: Observable<T>) {\n try {\n return init(liftedSource, this);\n } catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n", "import { Subscriber } from '../Subscriber';\n\n/**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional teardown logic here. This will only be called on teardown if the\n * subscriber itself is not already closed. This is called after all other teardown logic is executed.\n */\nexport function createOperatorSubscriber<T>(\n destination: Subscriber<any>,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n onFinalize?: () => void\n): Subscriber<T> {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\n\n/**\n * A generic helper for allowing operators to be created with a Subscriber and\n * use closures to capture necessary state from the operator function itself.\n */\nexport class OperatorSubscriber<T> extends Subscriber<T> {\n /**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional finalization logic here. This will only be called on finalization if the\n * subscriber itself is not already closed. This is called after all other finalization logic is executed.\n * @param shouldUnsubscribe An optional check to see if an unsubscribe call should truly unsubscribe.\n * NOTE: This currently **ONLY** exists to support the strange behavior of {@link groupBy}, where unsubscription\n * to the resulting observable does not actually disconnect from the source if there are active subscriptions\n * to any grouped observable. (DO NOT EXPOSE OR USE EXTERNALLY!!!)\n */\n constructor(\n destination: Subscriber<any>,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n private onFinalize?: () => void,\n private shouldUnsubscribe?: () => boolean\n ) {\n // It's important - for performance reasons - that all of this class's\n // members are initialized and that they are always initialized in the same\n // order. This will ensure that all OperatorSubscriber instances have the\n // same hidden class in V8. This, in turn, will help keep the number of\n // hidden classes involved in property accesses within the base class as\n // low as possible. If the number of hidden classes involved exceeds four,\n // the property accesses will become megamorphic and performance penalties\n // will be incurred - i.e. inline caches won't be used.\n //\n // The reasons for ensuring all instances have the same hidden class are\n // further discussed in this blog post from Benedikt Meurer:\n // https://benediktmeurer.de/2018/03/23/impact-of-polymorphism-on-component-based-frameworks-like-react/\n super(destination);\n this._next = onNext\n ? function (this: OperatorSubscriber<T>, value: T) {\n try {\n onNext(value);\n } catch (err) {\n destination.error(err);\n }\n }\n : super._next;\n this._error = onError\n ? function (this: OperatorSubscriber<T>, err: any) {\n try {\n onError(err);\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._error;\n this._complete = onComplete\n ? function (this: OperatorSubscriber<T>) {\n try {\n onComplete();\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._complete;\n }\n\n unsubscribe() {\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const { closed } = this;\n super.unsubscribe();\n // Execute additional teardown if we have any and we didn't already do so.\n !closed && this.onFinalize?.();\n }\n }\n}\n", "import { Subscription } from '../Subscription';\n\ninterface AnimationFrameProvider {\n schedule(callback: FrameRequestCallback): Subscription;\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n delegate:\n | {\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n }\n | undefined;\n}\n\nexport const animationFrameProvider: AnimationFrameProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n schedule(callback) {\n let request = requestAnimationFrame;\n let cancel: typeof cancelAnimationFrame | undefined = cancelAnimationFrame;\n const { delegate } = animationFrameProvider;\n if (delegate) {\n request = delegate.requestAnimationFrame;\n cancel = delegate.cancelAnimationFrame;\n }\n const handle = request((timestamp) => {\n // Clear the cancel function. The request has been fulfilled, so\n // attempting to cancel the request upon unsubscription would be\n // pointless.\n cancel = undefined;\n callback(timestamp);\n });\n return new Subscription(() => cancel?.(handle));\n },\n requestAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.requestAnimationFrame || requestAnimationFrame)(...args);\n },\n cancelAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.cancelAnimationFrame || cancelAnimationFrame)(...args);\n },\n delegate: undefined,\n};\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface ObjectUnsubscribedError extends Error {}\n\nexport interface ObjectUnsubscribedErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): ObjectUnsubscribedError;\n}\n\n/**\n * An error thrown when an action is invalid because the object has been\n * unsubscribed.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n *\n * @class ObjectUnsubscribedError\n */\nexport const ObjectUnsubscribedError: ObjectUnsubscribedErrorCtor = createErrorClass(\n (_super) =>\n function ObjectUnsubscribedErrorImpl(this: any) {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n }\n);\n", "import { Operator } from './Operator';\nimport { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { Observer, SubscriptionLike, TeardownLogic } from './types';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A Subject is a special type of Observable that allows values to be\n * multicasted to many Observers. Subjects are like EventEmitters.\n *\n * Every Subject is an Observable and an Observer. You can subscribe to a\n * Subject, and you can call next to feed values as well as error and complete.\n */\nexport class Subject<T> extends Observable<T> implements SubscriptionLike {\n closed = false;\n\n private currentObservers: Observer<T>[] | null = null;\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n observers: Observer<T>[] = [];\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n isStopped = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n hasError = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n thrownError: any = null;\n\n /**\n * Creates a \"subject\" by basically gluing an observer to an observable.\n *\n * @nocollapse\n * @deprecated Recommended you do not use. Will be removed at some point in the future. Plans for replacement still under discussion.\n */\n static create: (...args: any[]) => any = <T>(destination: Observer<T>, source: Observable<T>): AnonymousSubject<T> => {\n return new AnonymousSubject<T>(destination, source);\n };\n\n constructor() {\n // NOTE: This must be here to obscure Observable's constructor.\n super();\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n lift<R>(operator: Operator<T, R>): Observable<R> {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator as any;\n return subject as any;\n }\n\n /** @internal */\n protected _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n\n next(value: T) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n\n error(err: any) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.error(err);\n }\n }\n });\n }\n\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.complete();\n }\n }\n });\n }\n\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null!;\n }\n\n get observed() {\n return this.observers?.length > 0;\n }\n\n /** @internal */\n protected _trySubscribe(subscriber: Subscriber<T>): TeardownLogic {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n\n /** @internal */\n protected _innerSubscribe(subscriber: Subscriber<any>) {\n const { hasError, isStopped, observers } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n\n /** @internal */\n protected _checkFinalizedStatuses(subscriber: Subscriber<any>) {\n const { hasError, thrownError, isStopped } = this;\n if (hasError) {\n subscriber.error(thrownError);\n } else if (isStopped) {\n subscriber.complete();\n }\n }\n\n /**\n * Creates a new Observable with this Subject as the source. You can do this\n * to create custom Observer-side logic of the Subject and conceal it from\n * code that uses the Observable.\n * @return {Observable} Observable that the Subject casts to\n */\n asObservable(): Observable<T> {\n const observable: any = new Observable<T>();\n observable.source = this;\n return observable;\n }\n}\n\n/**\n * @class AnonymousSubject<T>\n */\nexport class AnonymousSubject<T> extends Subject<T> {\n constructor(\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n public destination?: Observer<T>,\n source?: Observable<T>\n ) {\n super();\n this.source = source;\n }\n\n next(value: T) {\n this.destination?.next?.(value);\n }\n\n error(err: any) {\n this.destination?.error?.(err);\n }\n\n complete() {\n this.destination?.complete?.();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n return this.source?.subscribe(subscriber) ?? EMPTY_SUBSCRIPTION;\n }\n}\n", "import { Subject } from './Subject';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\n\n/**\n * A variant of Subject that requires an initial value and emits its current\n * value whenever it is subscribed to.\n *\n * @class BehaviorSubject<T>\n */\nexport class BehaviorSubject<T> extends Subject<T> {\n constructor(private _value: T) {\n super();\n }\n\n get value(): T {\n return this.getValue();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n const subscription = super._subscribe(subscriber);\n !subscription.closed && subscriber.next(this._value);\n return subscription;\n }\n\n getValue(): T {\n const { hasError, thrownError, _value } = this;\n if (hasError) {\n throw thrownError;\n }\n this._throwIfClosed();\n return _value;\n }\n\n next(value: T): void {\n super.next((this._value = value));\n }\n}\n", "import { TimestampProvider } from '../types';\n\ninterface DateTimestampProvider extends TimestampProvider {\n delegate: TimestampProvider | undefined;\n}\n\nexport const dateTimestampProvider: DateTimestampProvider = {\n now() {\n // Use the variable rather than `this` so that the function can be called\n // without being bound to the provider.\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined,\n};\n", "import { Subject } from './Subject';\nimport { TimestampProvider } from './types';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * A variant of {@link Subject} that \"replays\" old values to new subscribers by emitting them when they first subscribe.\n *\n * `ReplaySubject` has an internal buffer that will store a specified number of values that it has observed. Like `Subject`,\n * `ReplaySubject` \"observes\" values by having them passed to its `next` method. When it observes a value, it will store that\n * value for a time determined by the configuration of the `ReplaySubject`, as passed to its constructor.\n *\n * When a new subscriber subscribes to the `ReplaySubject` instance, it will synchronously emit all values in its buffer in\n * a First-In-First-Out (FIFO) manner. The `ReplaySubject` will also complete, if it has observed completion; and it will\n * error if it has observed an error.\n *\n * There are two main configuration items to be concerned with:\n *\n * 1. `bufferSize` - This will determine how many items are stored in the buffer, defaults to infinite.\n * 2. `windowTime` - The amount of time to hold a value in the buffer before removing it from the buffer.\n *\n * Both configurations may exist simultaneously. So if you would like to buffer a maximum of 3 values, as long as the values\n * are less than 2 seconds old, you could do so with a `new ReplaySubject(3, 2000)`.\n *\n * ### Differences with BehaviorSubject\n *\n * `BehaviorSubject` is similar to `new ReplaySubject(1)`, with a couple of exceptions:\n *\n * 1. `BehaviorSubject` comes \"primed\" with a single value upon construction.\n * 2. `ReplaySubject` will replay values, even after observing an error, where `BehaviorSubject` will not.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n * @see {@link shareReplay}\n */\nexport class ReplaySubject<T> extends Subject<T> {\n private _buffer: (T | number)[] = [];\n private _infiniteTimeWindow = true;\n\n /**\n * @param bufferSize The size of the buffer to replay on subscription\n * @param windowTime The amount of time the buffered items will stay buffered\n * @param timestampProvider An object with a `now()` method that provides the current timestamp. This is used to\n * calculate the amount of time something has been buffered.\n */\n constructor(\n private _bufferSize = Infinity,\n private _windowTime = Infinity,\n private _timestampProvider: TimestampProvider = dateTimestampProvider\n ) {\n super();\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n\n next(value: T): void {\n const { isStopped, _buffer, _infiniteTimeWindow, _timestampProvider, _windowTime } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber<T>): Subscription {\n this._throwIfClosed();\n this._trimBuffer();\n\n const subscription = this._innerSubscribe(subscriber);\n\n const { _infiniteTimeWindow, _buffer } = this;\n // We use a copy here, so reentrant code does not mutate our array while we're\n // emitting it to a new subscriber.\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i] as T);\n }\n\n this._checkFinalizedStatuses(subscriber);\n\n return subscription;\n }\n\n private _trimBuffer() {\n const { _bufferSize, _timestampProvider, _buffer, _infiniteTimeWindow } = this;\n // If we don't have an infinite buffer size, and we're over the length,\n // use splice to truncate the old buffer values off. Note that we have to\n // double the size for instances where we're not using an infinite time window\n // because we're storing the values and the timestamps in the same array.\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n\n // Now, if we're not in an infinite time window, remove all values where the time is\n // older than what is allowed.\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n // Search the array for the first timestamp that isn't expired and\n // truncate the buffer up to that point.\n for (let i = 1; i < _buffer.length && (_buffer[i] as number) <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Subscription } from '../Subscription';\nimport { SchedulerAction } from '../types';\n\n/**\n * A unit of work to be executed in a `scheduler`. An action is typically\n * created from within a {@link SchedulerLike} and an RxJS user does not need to concern\n * themselves about creating and manipulating an Action.\n *\n * ```ts\n * class Action<T> extends Subscription {\n * new (scheduler: Scheduler, work: (state?: T) => void);\n * schedule(state?: T, delay: number = 0): Subscription;\n * }\n * ```\n *\n * @class Action<T>\n */\nexport class Action<T> extends Subscription {\n constructor(scheduler: Scheduler, work: (this: SchedulerAction<T>, state?: T) => void) {\n super();\n }\n /**\n * Schedules this action on its parent {@link SchedulerLike} for execution. May be passed\n * some context object, `state`. May happen at some point in the future,\n * according to the `delay` parameter, if specified.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler.\n * @return {void}\n */\n public schedule(state?: T, delay: number = 0): Subscription {\n return this;\n }\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetIntervalFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearIntervalFunction = (handle: TimerHandle) => void;\n\ninterface IntervalProvider {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n delegate:\n | {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n }\n | undefined;\n}\n\nexport const intervalProvider: IntervalProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setInterval(handler: () => void, timeout?: number, ...args) {\n const { delegate } = intervalProvider;\n if (delegate?.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const { delegate } = intervalProvider;\n return (delegate?.clearInterval || clearInterval)(handle as any);\n },\n delegate: undefined,\n};\n", "import { Action } from './Action';\nimport { SchedulerAction } from '../types';\nimport { Subscription } from '../Subscription';\nimport { AsyncScheduler } from './AsyncScheduler';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncAction<T> extends Action<T> {\n public id: TimerHandle | undefined;\n public state?: T;\n // @ts-ignore: Property has no initializer and is not definitely assigned\n public delay: number;\n protected pending: boolean = false;\n\n constructor(protected scheduler: AsyncScheduler, protected work: (this: SchedulerAction<T>, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (this.closed) {\n return this;\n }\n\n // Always replace the current state with the new state.\n this.state = state;\n\n const id = this.id;\n const scheduler = this.scheduler;\n\n //\n // Important implementation note:\n //\n // Actions only execute once by default, unless rescheduled from within the\n // scheduled callback. This allows us to implement single and repeat\n // actions via the same code path, without adding API surface area, as well\n // as mimic traditional recursion but across asynchronous boundaries.\n //\n // However, JS runtimes and timers distinguish between intervals achieved by\n // serial `setTimeout` calls vs. a single `setInterval` call. An interval of\n // serial `setTimeout` calls can be individually delayed, which delays\n // scheduling the next `setTimeout`, and so on. `setInterval` attempts to\n // guarantee the interval callback will be invoked more precisely to the\n // interval period, regardless of load.\n //\n // Therefore, we use `setInterval` to schedule single and repeat actions.\n // If the action reschedules itself with the same delay, the interval is not\n // canceled. If the action doesn't reschedule, or reschedules with a\n // different delay, the interval will be canceled after scheduled callback\n // execution.\n //\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n\n // Set the pending flag indicating that this action has been scheduled, or\n // has recursively rescheduled itself.\n this.pending = true;\n\n this.delay = delay;\n // If this action has already an async Id, don't request a new one.\n this.id = this.id ?? this.requestAsyncId(scheduler, this.id, delay);\n\n return this;\n }\n\n protected requestAsyncId(scheduler: AsyncScheduler, _id?: TimerHandle, delay: number = 0): TimerHandle {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n\n protected recycleAsyncId(_scheduler: AsyncScheduler, id?: TimerHandle, delay: number | null = 0): TimerHandle | undefined {\n // If this action is rescheduled with the same delay time, don't clear the interval id.\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n // Otherwise, if the action's delay time is different from the current delay,\n // or the action has been rescheduled before it's executed, clear the interval id\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n\n return undefined;\n }\n\n /**\n * Immediately executes this action and the `work` it contains.\n * @return {any}\n */\n public execute(state: T, delay: number): any {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n } else if (this.pending === false && this.id != null) {\n // Dequeue if the action didn't reschedule itself. Don't call\n // unsubscribe(), because the action could reschedule later.\n // For example:\n // ```\n // scheduler.schedule(function doWork(counter) {\n // /* ... I'm a busy worker bee ... */\n // var originalAction = this;\n // /* wait 100ms before rescheduling the action */\n // setTimeout(function () {\n // originalAction.schedule(counter + 1);\n // }, 100);\n // }, 1000);\n // ```\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n\n protected _execute(state: T, _delay: number): any {\n let errored: boolean = false;\n let errorValue: any;\n try {\n this.work(state);\n } catch (e) {\n errored = true;\n // HACK: Since code elsewhere is relying on the \"truthiness\" of the\n // return here, we can't have it return \"\" or 0 or false.\n // TODO: Clean this up when we refactor schedulers mid-version-8 or so.\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n\n unsubscribe() {\n if (!this.closed) {\n const { id, scheduler } = this;\n const { actions } = scheduler;\n\n this.work = this.state = this.scheduler = null!;\n this.pending = false;\n\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n\n this.delay = null!;\n super.unsubscribe();\n }\n }\n}\n", "import { Action } from './scheduler/Action';\nimport { Subscription } from './Subscription';\nimport { SchedulerLike, SchedulerAction } from './types';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * An execution context and a data structure to order tasks and schedule their\n * execution. Provides a notion of (potentially virtual) time, through the\n * `now()` getter method.\n *\n * Each unit of work in a Scheduler is called an `Action`.\n *\n * ```ts\n * class Scheduler {\n * now(): number;\n * schedule(work, delay?, state?): Subscription;\n * }\n * ```\n *\n * @class Scheduler\n * @deprecated Scheduler is an internal implementation detail of RxJS, and\n * should not be used directly. Rather, create your own class and implement\n * {@link SchedulerLike}. Will be made internal in v8.\n */\nexport class Scheduler implements SchedulerLike {\n public static now: () => number = dateTimestampProvider.now;\n\n constructor(private schedulerActionCtor: typeof Action, now: () => number = Scheduler.now) {\n this.now = now;\n }\n\n /**\n * A getter method that returns a number representing the current time\n * (at the time this function was called) according to the scheduler's own\n * internal clock.\n * @return {number} A number that represents the current time. May or may not\n * have a relation to wall-clock time. May or may not refer to a time unit\n * (e.g. milliseconds).\n */\n public now: () => number;\n\n /**\n * Schedules a function, `work`, for execution. May happen at some point in\n * the future, according to the `delay` parameter, if specified. May be passed\n * some context object, `state`, which will be passed to the `work` function.\n *\n * The given arguments will be processed an stored as an Action object in a\n * queue of actions.\n *\n * @param {function(state: ?T): ?Subscription} work A function representing a\n * task, or some unit of work to be executed by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler itself.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @return {Subscription} A subscription in order to be able to unsubscribe\n * the scheduled work.\n */\n public schedule<T>(work: (this: SchedulerAction<T>, state?: T) => void, delay: number = 0, state?: T): Subscription {\n return new this.schedulerActionCtor<T>(this, work).schedule(state, delay);\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Action } from './Action';\nimport { AsyncAction } from './AsyncAction';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncScheduler extends Scheduler {\n public actions: Array<AsyncAction<any>> = [];\n /**\n * A flag to indicate whether the Scheduler is currently executing a batch of\n * queued actions.\n * @type {boolean}\n * @internal\n */\n public _active: boolean = false;\n /**\n * An internal ID used to track the latest asynchronous task such as those\n * coming from `setTimeout`, `setInterval`, `requestAnimationFrame`, and\n * others.\n * @type {any}\n * @internal\n */\n public _scheduled: TimerHandle | undefined;\n\n constructor(SchedulerAction: typeof Action, now: () => number = Scheduler.now) {\n super(SchedulerAction, now);\n }\n\n public flush(action: AsyncAction<any>): void {\n const { actions } = this;\n\n if (this._active) {\n actions.push(action);\n return;\n }\n\n let error: any;\n this._active = true;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions.shift()!)); // exhaust the scheduler queue\n\n this._active = false;\n\n if (error) {\n while ((action = actions.shift()!)) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\n/**\n *\n * Async Scheduler\n *\n * <span class=\"informal\">Schedule task as if you used setTimeout(task, duration)</span>\n *\n * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript\n * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating\n * in intervals.\n *\n * If you just want to \"defer\" task, that is to perform it right after currently\n * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),\n * better choice will be the {@link asapScheduler} scheduler.\n *\n * ## Examples\n * Use async scheduler to delay task\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * const task = () => console.log('it works!');\n *\n * asyncScheduler.schedule(task, 2000);\n *\n * // After 2 seconds logs:\n * // \"it works!\"\n * ```\n *\n * Use async scheduler to repeat task in intervals\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * function task(state) {\n * console.log(state);\n * this.schedule(state + 1, 1000); // `this` references currently executing Action,\n * // which we reschedule with new state and delay\n * }\n *\n * asyncScheduler.schedule(task, 3000, 0);\n *\n * // Logs:\n * // 0 after 3s\n * // 1 after 4s\n * // 2 after 5s\n * // 3 after 6s\n * ```\n */\n\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\n\n/**\n * @deprecated Renamed to {@link asyncScheduler}. Will be removed in v8.\n */\nexport const async = asyncScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { Subscription } from '../Subscription';\nimport { QueueScheduler } from './QueueScheduler';\nimport { SchedulerAction } from '../types';\nimport { TimerHandle } from './timerHandle';\n\nexport class QueueAction<T> extends AsyncAction<T> {\n constructor(protected scheduler: QueueScheduler, protected work: (this: SchedulerAction<T>, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (delay > 0) {\n return super.schedule(state, delay);\n }\n this.delay = delay;\n this.state = state;\n this.scheduler.flush(this);\n return this;\n }\n\n public execute(state: T, delay: number): any {\n return delay > 0 || this.closed ? super.execute(state, delay) : this._execute(state, delay);\n }\n\n protected requestAsyncId(scheduler: QueueScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n\n if ((delay != null && delay > 0) || (delay == null && this.delay > 0)) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n\n // Otherwise flush the scheduler starting with this action.\n scheduler.flush(this);\n\n // HACK: In the past, this was returning `void`. However, `void` isn't a valid\n // `TimerHandle`, and generally the return value here isn't really used. So the\n // compromise is to return `0` which is both \"falsy\" and a valid `TimerHandle`,\n // as opposed to refactoring every other instanceo of `requestAsyncId`.\n return 0;\n }\n}\n", "import { AsyncScheduler } from './AsyncScheduler';\n\nexport class QueueScheduler extends AsyncScheduler {\n}\n", "import { QueueAction } from './QueueAction';\nimport { QueueScheduler } from './QueueScheduler';\n\n/**\n *\n * Queue Scheduler\n *\n * <span class=\"informal\">Put every next task on a queue, instead of executing it immediately</span>\n *\n * `queue` scheduler, when used with delay, behaves the same as {@link asyncScheduler} scheduler.\n *\n * When used without delay, it schedules given task synchronously - executes it right when\n * it is scheduled. However when called recursively, that is when inside the scheduled task,\n * another task is scheduled with queue scheduler, instead of executing immediately as well,\n * that task will be put on a queue and wait for current one to finish.\n *\n * This means that when you execute task with `queue` scheduler, you are sure it will end\n * before any other task scheduled with that scheduler will start.\n *\n * ## Examples\n * Schedule recursively first, then do something\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(() => {\n * queueScheduler.schedule(() => console.log('second')); // will not happen now, but will be put on a queue\n *\n * console.log('first');\n * });\n *\n * // Logs:\n * // \"first\"\n * // \"second\"\n * ```\n *\n * Reschedule itself recursively\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(function(state) {\n * if (state !== 0) {\n * console.log('before', state);\n * this.schedule(state - 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * console.log('after', state);\n * }\n * }, 0, 3);\n *\n * // In scheduler that runs recursively, you would expect:\n * // \"before\", 3\n * // \"before\", 2\n * // \"before\", 1\n * // \"after\", 1\n * // \"after\", 2\n * // \"after\", 3\n *\n * // But with queue it logs:\n * // \"before\", 3\n * // \"after\", 3\n * // \"before\", 2\n * // \"after\", 2\n * // \"before\", 1\n * // \"after\", 1\n * ```\n */\n\nexport const queueScheduler = new QueueScheduler(QueueAction);\n\n/**\n * @deprecated Renamed to {@link queueScheduler}. Will be removed in v8.\n */\nexport const queue = queueScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nimport { SchedulerAction } from '../types';\nimport { animationFrameProvider } from './animationFrameProvider';\nimport { TimerHandle } from './timerHandle';\n\nexport class AnimationFrameAction<T> extends AsyncAction<T> {\n constructor(protected scheduler: AnimationFrameScheduler, protected work: (this: SchedulerAction<T>, state?: T) => void) {\n super(scheduler, work);\n }\n\n protected requestAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay is greater than 0, request as an async action.\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n // Push the action to the end of the scheduler queue.\n scheduler.actions.push(this);\n // If an animation frame has already been requested, don't request another\n // one. If an animation frame hasn't been requested yet, request one. Return\n // the current animation frame request id.\n return scheduler._scheduled || (scheduler._scheduled = animationFrameProvider.requestAnimationFrame(() => scheduler.flush(undefined)));\n }\n\n protected recycleAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle | undefined {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n // If the scheduler queue has no remaining actions with the same async id,\n // cancel the requested animation frame and set the scheduled flag to\n // undefined so the next AnimationFrameAction will request its own.\n const { actions } = scheduler;\n if (id != null && actions[actions.length - 1]?.id !== id) {\n animationFrameProvider.cancelAnimationFrame(id as number);\n scheduler._scheduled = undefined;\n }\n // Return undefined so the action knows to request a new async id if it's rescheduled.\n return undefined;\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\nexport class AnimationFrameScheduler extends AsyncScheduler {\n public flush(action?: AsyncAction<any>): void {\n this._active = true;\n // The async id that effects a call to flush is stored in _scheduled.\n // Before executing an action, it's necessary to check the action's async\n // id to determine whether it's supposed to be executed in the current\n // flush.\n // Previous implementations of this method used a count to determine this,\n // but that was unsound, as actions that are unsubscribed - i.e. cancelled -\n // are removed from the actions array and that can shift actions that are\n // scheduled to be executed in a subsequent flush into positions at which\n // they are executed within the current flush.\n const flushId = this._scheduled;\n this._scheduled = undefined;\n\n const { actions } = this;\n let error: any;\n action = action || actions.shift()!;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n\n this._active = false;\n\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\n\n/**\n *\n * Animation Frame Scheduler\n *\n * <span class=\"informal\">Perform task when `window.requestAnimationFrame` would fire</span>\n *\n * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler\n * behaviour.\n *\n * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.\n * It makes sure scheduled task will happen just before next browser content repaint,\n * thus performing animations as efficiently as possible.\n *\n * ## Example\n * Schedule div height animation\n * ```ts\n * // html: <div style=\"background: #0ff;\"></div>\n * import { animationFrameScheduler } from 'rxjs';\n *\n * const div = document.querySelector('div');\n *\n * animationFrameScheduler.schedule(function(height) {\n * div.style.height = height + \"px\";\n *\n * this.schedule(height + 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * }, 0, 0);\n *\n * // You will see a div element growing in height\n * ```\n */\n\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\n\n/**\n * @deprecated Renamed to {@link animationFrameScheduler}. Will be removed in v8.\n */\nexport const animationFrame = animationFrameScheduler;\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\n/**\n * A simple Observable that emits no items to the Observer and immediately\n * emits a complete notification.\n *\n * <span class=\"informal\">Just emits 'complete', and nothing else.</span>\n *\n * \n *\n * A simple Observable that only emits the complete notification. It can be used\n * for composing with other Observables, such as in a {@link mergeMap}.\n *\n * ## Examples\n *\n * Log complete notification\n *\n * ```ts\n * import { EMPTY } from 'rxjs';\n *\n * EMPTY.subscribe({\n * next: () => console.log('Next'),\n * complete: () => console.log('Complete!')\n * });\n *\n * // Outputs\n * // Complete!\n * ```\n *\n * Emit the number 7, then complete\n *\n * ```ts\n * import { EMPTY, startWith } from 'rxjs';\n *\n * const result = EMPTY.pipe(startWith(7));\n * result.subscribe(x => console.log(x));\n *\n * // Outputs\n * // 7\n * ```\n *\n * Map and flatten only odd numbers to the sequence `'a'`, `'b'`, `'c'`\n *\n * ```ts\n * import { interval, mergeMap, of, EMPTY } from 'rxjs';\n *\n * const interval$ = interval(1000);\n * const result = interval$.pipe(\n * mergeMap(x => x % 2 === 1 ? of('a', 'b', 'c') : EMPTY),\n * );\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following to the console:\n * // x is equal to the count on the interval, e.g. (0, 1, 2, 3, ...)\n * // x will occur every 1000ms\n * // if x % 2 is equal to 1, print a, b, c (each on its own)\n * // if x % 2 is not equal to 1, nothing will be output\n * ```\n *\n * @see {@link Observable}\n * @see {@link NEVER}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const EMPTY = new Observable<never>((subscriber) => subscriber.complete());\n\n/**\n * @param scheduler A {@link SchedulerLike} to use for scheduling\n * the emission of the complete notification.\n * @deprecated Replaced with the {@link EMPTY} constant or {@link scheduled} (e.g. `scheduled([], scheduler)`). Will be removed in v8.\n */\nexport function empty(scheduler?: SchedulerLike) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\n\nfunction emptyScheduled(scheduler: SchedulerLike) {\n return new Observable<never>((subscriber) => scheduler.schedule(() => subscriber.complete()));\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport function isScheduler(value: any): value is SchedulerLike {\n return value && isFunction(value.schedule);\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\n\nfunction last<T>(arr: T[]): T | undefined {\n return arr[arr.length - 1];\n}\n\nexport function popResultSelector(args: any[]): ((...args: unknown[]) => unknown) | undefined {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\n\nexport function popScheduler(args: any[]): SchedulerLike | undefined {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\n\nexport function popNumber(args: any[], defaultValue: number): number {\n return typeof last(args) === 'number' ? args.pop()! : defaultValue;\n}\n", "export const isArrayLike = (<T>(x: any): x is ArrayLike<T> => x && typeof x.length === 'number' && typeof x !== 'function');", "import { isFunction } from \"./isFunction\";\n\n/**\n * Tests to see if the object is \"thennable\".\n * @param value the object to test\n */\nexport function isPromise(value: any): value is PromiseLike<any> {\n return isFunction(value?.then);\n}\n", "import { InteropObservable } from '../types';\nimport { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being Observable (but not necessary an Rx Observable) */\nexport function isInteropObservable(input: any): input is InteropObservable<any> {\n return isFunction(input[Symbol_observable]);\n}\n", "import { isFunction } from './isFunction';\n\nexport function isAsyncIterable<T>(obj: any): obj is AsyncIterable<T> {\n return Symbol.asyncIterator && isFunction(obj?.[Symbol.asyncIterator]);\n}\n", "/**\n * Creates the TypeError to throw if an invalid object is passed to `from` or `scheduled`.\n * @param input The object that was passed.\n */\nexport function createInvalidObservableTypeError(input: any) {\n // TODO: We should create error codes that can be looked up, so this can be less verbose.\n return new TypeError(\n `You provided ${\n input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`\n } where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`\n );\n}\n", "export function getSymbolIterator(): symbol {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator' as any;\n }\n\n return Symbol.iterator;\n}\n\nexport const iterator = getSymbolIterator();\n", "import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being an Iterable */\nexport function isIterable(input: any): input is Iterable<any> {\n return isFunction(input?.[Symbol_iterator]);\n}\n", "import { ReadableStreamLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport async function* readableStreamLikeToAsyncGenerator<T>(readableStream: ReadableStreamLike<T>): AsyncGenerator<T> {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const { value, done } = await reader.read();\n if (done) {\n return;\n }\n yield value!;\n }\n } finally {\n reader.releaseLock();\n }\n}\n\nexport function isReadableStreamLike<T>(obj: any): obj is ReadableStreamLike<T> {\n // We don't want to use instanceof checks because they would return\n // false for instances from another Realm, like an <iframe>.\n return isFunction(obj?.getReader);\n}\n", "import { isArrayLike } from '../util/isArrayLike';\nimport { isPromise } from '../util/isPromise';\nimport { Observable } from '../Observable';\nimport { ObservableInput, ObservedValueOf, ReadableStreamLike } from '../types';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isIterable } from '../util/isIterable';\nimport { isReadableStreamLike, readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\nimport { Subscriber } from '../Subscriber';\nimport { isFunction } from '../util/isFunction';\nimport { reportUnhandledError } from '../util/reportUnhandledError';\nimport { observable as Symbol_observable } from '../symbol/observable';\n\nexport function innerFrom<O extends ObservableInput<any>>(input: O): Observable<ObservedValueOf<O>>;\nexport function innerFrom<T>(input: ObservableInput<T>): Observable<T> {\n if (input instanceof Observable) {\n return input;\n }\n if (input != null) {\n if (isInteropObservable(input)) {\n return fromInteropObservable(input);\n }\n if (isArrayLike(input)) {\n return fromArrayLike(input);\n }\n if (isPromise(input)) {\n return fromPromise(input);\n }\n if (isAsyncIterable(input)) {\n return fromAsyncIterable(input);\n }\n if (isIterable(input)) {\n return fromIterable(input);\n }\n if (isReadableStreamLike(input)) {\n return fromReadableStreamLike(input);\n }\n }\n\n throw createInvalidObservableTypeError(input);\n}\n\n/**\n * Creates an RxJS Observable from an object that implements `Symbol.observable`.\n * @param obj An object that properly implements `Symbol.observable`.\n */\nexport function fromInteropObservable<T>(obj: any) {\n return new Observable((subscriber: Subscriber<T>) => {\n const obs = obj[Symbol_observable]();\n if (isFunction(obs.subscribe)) {\n return obs.subscribe(subscriber);\n }\n // Should be caught by observable subscribe function error handling.\n throw new TypeError('Provided object does not correctly implement Symbol.observable');\n });\n}\n\n/**\n * Synchronously emits the values of an array like and completes.\n * This is exported because there are creation functions and operators that need to\n * make direct use of the same logic, and there's no reason to make them run through\n * `from` conditionals because we *know* they're dealing with an array.\n * @param array The array to emit values from\n */\nexport function fromArrayLike<T>(array: ArrayLike<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n // Loop over the array and emit each value. Note two things here:\n // 1. We're making sure that the subscriber is not closed on each loop.\n // This is so we don't continue looping over a very large array after\n // something like a `take`, `takeWhile`, or other synchronous unsubscription\n // has already unsubscribed.\n // 2. In this form, reentrant code can alter that array we're looping over.\n // This is a known issue, but considered an edge case. The alternative would\n // be to copy the array before executing the loop, but this has\n // performance implications.\n for (let i = 0; i < array.length && !subscriber.closed; i++) {\n subscriber.next(array[i]);\n }\n subscriber.complete();\n });\n}\n\nexport function fromPromise<T>(promise: PromiseLike<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n promise\n .then(\n (value) => {\n if (!subscriber.closed) {\n subscriber.next(value);\n subscriber.complete();\n }\n },\n (err: any) => subscriber.error(err)\n )\n .then(null, reportUnhandledError);\n });\n}\n\nexport function fromIterable<T>(iterable: Iterable<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n for (const value of iterable) {\n subscriber.next(value);\n if (subscriber.closed) {\n return;\n }\n }\n subscriber.complete();\n });\n}\n\nexport function fromAsyncIterable<T>(asyncIterable: AsyncIterable<T>) {\n return new Observable((subscriber: Subscriber<T>) => {\n process(asyncIterable, subscriber).catch((err) => subscriber.error(err));\n });\n}\n\nexport function fromReadableStreamLike<T>(readableStream: ReadableStreamLike<T>) {\n return fromAsyncIterable(readableStreamLikeToAsyncGenerator(readableStream));\n}\n\nasync function process<T>(asyncIterable: AsyncIterable<T>, subscriber: Subscriber<T>) {\n for await (const value of asyncIterable) {\n subscriber.next(value);\n // A side-effect may have closed our subscriber,\n // check before the next iteration.\n if (subscriber.closed) {\n return;\n }\n }\n subscriber.complete();\n}\n", "import { Subscription } from '../Subscription';\nimport { SchedulerAction, SchedulerLike } from '../types';\n\nexport function executeSchedule(\n parentSubscription: Subscription,\n scheduler: SchedulerLike,\n work: () => void,\n delay: number,\n repeat: true\n): void;\nexport function executeSchedule(\n parentSubscription: Subscription,\n scheduler: SchedulerLike,\n work: () => void,\n delay?: number,\n repeat?: false\n): Subscription;\n\nexport function executeSchedule(\n parentSubscription: Subscription,\n scheduler: SchedulerLike,\n work: () => void,\n delay = 0,\n repeat = false\n): Subscription | void {\n const scheduleSubscription = scheduler.schedule(function (this: SchedulerAction<any>) {\n work();\n if (repeat) {\n parentSubscription.add(this.schedule(null, delay));\n } else {\n this.unsubscribe();\n }\n }, delay);\n\n parentSubscription.add(scheduleSubscription);\n\n if (!repeat) {\n // Because user-land scheduler implementations are unlikely to properly reuse\n // Actions for repeat scheduling, we can't trust that the returned subscription\n // will control repeat subscription scenarios. So we're trying to avoid using them\n // incorrectly within this library.\n return scheduleSubscription;\n }\n}\n", "/** @prettier */\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { executeSchedule } from '../util/executeSchedule';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Re-emits all notifications from source Observable with specified scheduler.\n *\n * <span class=\"informal\">Ensure a specific scheduler is used, from outside of an Observable.</span>\n *\n * `observeOn` is an operator that accepts a scheduler as a first parameter, which will be used to reschedule\n * notifications emitted by the source Observable. It might be useful, if you do not have control over\n * internal scheduler of a given Observable, but want to control when its values are emitted nevertheless.\n *\n * Returned Observable emits the same notifications (nexted values, complete and error events) as the source Observable,\n * but rescheduled with provided scheduler. Note that this doesn't mean that source Observables internal\n * scheduler will be replaced in any way. Original scheduler still will be used, but when the source Observable emits\n * notification, it will be immediately scheduled again - this time with scheduler passed to `observeOn`.\n * An anti-pattern would be calling `observeOn` on Observable that emits lots of values synchronously, to split\n * that emissions into asynchronous chunks. For this to happen, scheduler would have to be passed into the source\n * Observable directly (usually into the operator that creates it). `observeOn` simply delays notifications a\n * little bit more, to ensure that they are emitted at expected moments.\n *\n * As a matter of fact, `observeOn` accepts second parameter, which specifies in milliseconds with what delay notifications\n * will be emitted. The main difference between {@link delay} operator and `observeOn` is that `observeOn`\n * will delay all notifications - including error notifications - while `delay` will pass through error\n * from source Observable immediately when it is emitted. In general it is highly recommended to use `delay` operator\n * for any kind of delaying of values in the stream, while using `observeOn` to specify which scheduler should be used\n * for notification emissions in general.\n *\n * ## Example\n *\n * Ensure values in subscribe are called just before browser repaint\n *\n * ```ts\n * import { interval, observeOn, animationFrameScheduler } from 'rxjs';\n *\n * const someDiv = document.createElement('div');\n * someDiv.style.cssText = 'width: 200px;background: #09c';\n * document.body.appendChild(someDiv);\n * const intervals = interval(10); // Intervals are scheduled\n * // with async scheduler by default...\n * intervals.pipe(\n * observeOn(animationFrameScheduler) // ...but we will observe on animationFrame\n * ) // scheduler to ensure smooth animation.\n * .subscribe(val => {\n * someDiv.style.height = val + 'px';\n * });\n * ```\n *\n * @see {@link delay}\n *\n * @param scheduler Scheduler that will be used to reschedule notifications from source Observable.\n * @param delay Number of milliseconds that states with what delay every notification should be rescheduled.\n * @return A function that returns an Observable that emits the same\n * notifications as the source Observable, but with provided scheduler.\n */\nexport function observeOn<T>(scheduler: SchedulerLike, delay = 0): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => executeSchedule(subscriber, scheduler, () => subscriber.next(value), delay),\n () => executeSchedule(subscriber, scheduler, () => subscriber.complete(), delay),\n (err) => executeSchedule(subscriber, scheduler, () => subscriber.error(err), delay)\n )\n );\n });\n}\n", "import { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { operate } from '../util/lift';\n\n/**\n * Asynchronously subscribes Observers to this Observable on the specified {@link SchedulerLike}.\n *\n * With `subscribeOn` you can decide what type of scheduler a specific Observable will be using when it is subscribed to.\n *\n * Schedulers control the speed and order of emissions to observers from an Observable stream.\n *\n * \n *\n * ## Example\n *\n * Given the following code:\n *\n * ```ts\n * import { of, merge } from 'rxjs';\n *\n * const a = of(1, 2, 3);\n * const b = of(4, 5, 6);\n *\n * merge(a, b).subscribe(console.log);\n *\n * // Outputs\n * // 1\n * // 2\n * // 3\n * // 4\n * // 5\n * // 6\n * ```\n *\n * Both Observable `a` and `b` will emit their values directly and synchronously once they are subscribed to.\n *\n * If we instead use the `subscribeOn` operator declaring that we want to use the {@link asyncScheduler} for values emitted by Observable `a`:\n *\n * ```ts\n * import { of, subscribeOn, asyncScheduler, merge } from 'rxjs';\n *\n * const a = of(1, 2, 3).pipe(subscribeOn(asyncScheduler));\n * const b = of(4, 5, 6);\n *\n * merge(a, b).subscribe(console.log);\n *\n * // Outputs\n * // 4\n * // 5\n * // 6\n * // 1\n * // 2\n * // 3\n * ```\n *\n * The reason for this is that Observable `b` emits its values directly and synchronously like before\n * but the emissions from `a` are scheduled on the event loop because we are now using the {@link asyncScheduler} for that specific Observable.\n *\n * @param scheduler The {@link SchedulerLike} to perform subscription actions on.\n * @param delay A delay to pass to the scheduler to delay subscriptions\n * @return A function that returns an Observable modified so that its\n * subscriptions happen on the specified {@link SchedulerLike}.\n */\nexport function subscribeOn<T>(scheduler: SchedulerLike, delay: number = 0): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n subscriber.add(scheduler.schedule(() => source.subscribe(subscriber), delay));\n });\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nimport { InteropObservable, SchedulerLike } from '../types';\n\nexport function scheduleObservable<T>(input: InteropObservable<T>, scheduler: SchedulerLike) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { observeOn } from '../operators/observeOn';\nimport { subscribeOn } from '../operators/subscribeOn';\nimport { SchedulerLike } from '../types';\n\nexport function schedulePromise<T>(input: PromiseLike<T>, scheduler: SchedulerLike) {\n return innerFrom(input).pipe(subscribeOn(scheduler), observeOn(scheduler));\n}\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\nexport function scheduleArray<T>(input: ArrayLike<T>, scheduler: SchedulerLike) {\n return new Observable<T>((subscriber) => {\n // The current array index.\n let i = 0;\n // Start iterating over the array like on a schedule.\n return scheduler.schedule(function () {\n if (i === input.length) {\n // If we have hit the end of the array like in the\n // previous job, we can complete.\n subscriber.complete();\n } else {\n // Otherwise let's next the value at the current index,\n // then increment our index.\n subscriber.next(input[i++]);\n // If the last emission didn't cause us to close the subscriber\n // (via take or some side effect), reschedule the job and we'll\n // make another pass.\n if (!subscriber.closed) {\n this.schedule();\n }\n }\n });\n });\n}\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\nimport { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from '../util/isFunction';\nimport { executeSchedule } from '../util/executeSchedule';\n\n/**\n * Used in {@link scheduled} to create an observable from an Iterable.\n * @param input The iterable to create an observable from\n * @param scheduler The scheduler to use\n */\nexport function scheduleIterable<T>(input: Iterable<T>, scheduler: SchedulerLike) {\n return new Observable<T>((subscriber) => {\n let iterator: Iterator<T, T>;\n\n // Schedule the initial creation of the iterator from\n // the iterable. This is so the code in the iterable is\n // not called until the scheduled job fires.\n executeSchedule(subscriber, scheduler, () => {\n // Create the iterator.\n iterator = (input as any)[Symbol_iterator]();\n\n executeSchedule(\n subscriber,\n scheduler,\n () => {\n let value: T;\n let done: boolean | undefined;\n try {\n // Pull the value out of the iterator\n ({ value, done } = iterator.next());\n } catch (err) {\n // We got an error while pulling from the iterator\n subscriber.error(err);\n return;\n }\n\n if (done) {\n // If it is \"done\" we just complete. This mimics the\n // behavior of JavaScript's `for..of` consumption of\n // iterables, which will not emit the value from an iterator\n // result of `{ done: true: value: 'here' }`.\n subscriber.complete();\n } else {\n // The iterable is not done, emit the value.\n subscriber.next(value);\n }\n },\n 0,\n true\n );\n });\n\n // During finalization, if we see this iterator has a `return` method,\n // then we know it is a Generator, and not just an Iterator. So we call\n // the `return()` function. This will ensure that any `finally { }` blocks\n // inside of the generator we can hit will be hit properly.\n return () => isFunction(iterator?.return) && iterator.return();\n });\n}\n", "import { SchedulerLike } from '../types';\nimport { Observable } from '../Observable';\nimport { executeSchedule } from '../util/executeSchedule';\n\nexport function scheduleAsyncIterable<T>(input: AsyncIterable<T>, scheduler: SchedulerLike) {\n if (!input) {\n throw new Error('Iterable cannot be null');\n }\n return new Observable<T>((subscriber) => {\n executeSchedule(subscriber, scheduler, () => {\n const iterator = input[Symbol.asyncIterator]();\n executeSchedule(\n subscriber,\n scheduler,\n () => {\n iterator.next().then((result) => {\n if (result.done) {\n // This will remove the subscriptions from\n // the parent subscription.\n subscriber.complete();\n } else {\n subscriber.next(result.value);\n }\n });\n },\n 0,\n true\n );\n });\n });\n}\n", "import { SchedulerLike, ReadableStreamLike } from '../types';\nimport { Observable } from '../Observable';\nimport { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\n\nexport function scheduleReadableStreamLike<T>(input: ReadableStreamLike<T>, scheduler: SchedulerLike): Observable<T> {\n return scheduleAsyncIterable(readableStreamLikeToAsyncGenerator(input), scheduler);\n}\n", "import { scheduleObservable } from './scheduleObservable';\nimport { schedulePromise } from './schedulePromise';\nimport { scheduleArray } from './scheduleArray';\nimport { scheduleIterable } from './scheduleIterable';\nimport { scheduleAsyncIterable } from './scheduleAsyncIterable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isPromise } from '../util/isPromise';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isIterable } from '../util/isIterable';\nimport { ObservableInput, SchedulerLike } from '../types';\nimport { Observable } from '../Observable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isReadableStreamLike } from '../util/isReadableStreamLike';\nimport { scheduleReadableStreamLike } from './scheduleReadableStreamLike';\n\n/**\n * Converts from a common {@link ObservableInput} type to an observable where subscription and emissions\n * are scheduled on the provided scheduler.\n *\n * @see {@link from}\n * @see {@link of}\n *\n * @param input The observable, array, promise, iterable, etc you would like to schedule\n * @param scheduler The scheduler to use to schedule the subscription and emissions from\n * the returned observable.\n */\nexport function scheduled<T>(input: ObservableInput<T>, scheduler: SchedulerLike): Observable<T> {\n if (input != null) {\n if (isInteropObservable(input)) {\n return scheduleObservable(input, scheduler);\n }\n if (isArrayLike(input)) {\n return scheduleArray(input, scheduler);\n }\n if (isPromise(input)) {\n return schedulePromise(input, scheduler);\n }\n if (isAsyncIterable(input)) {\n return scheduleAsyncIterable(input, scheduler);\n }\n if (isIterable(input)) {\n return scheduleIterable(input, scheduler);\n }\n if (isReadableStreamLike(input)) {\n return scheduleReadableStreamLike(input, scheduler);\n }\n }\n throw createInvalidObservableTypeError(input);\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInput, SchedulerLike, ObservedValueOf } from '../types';\nimport { scheduled } from '../scheduled/scheduled';\nimport { innerFrom } from './innerFrom';\n\nexport function from<O extends ObservableInput<any>>(input: O): Observable<ObservedValueOf<O>>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function from<O extends ObservableInput<any>>(input: O, scheduler: SchedulerLike | undefined): Observable<ObservedValueOf<O>>;\n\n/**\n * Creates an Observable from an Array, an array-like object, a Promise, an iterable object, or an Observable-like object.\n *\n * <span class=\"informal\">Converts almost anything to an Observable.</span>\n *\n * \n *\n * `from` converts various other objects and data types into Observables. It also converts a Promise, an array-like, or an\n * <a href=\"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#iterable\" target=\"_blank\">iterable</a>\n * object into an Observable that emits the items in that promise, array, or iterable. A String, in this context, is treated\n * as an array of characters. Observable-like objects (contains a function named with the ES2015 Symbol for Observable) can also be\n * converted through this operator.\n *\n * ## Examples\n *\n * Converts an array to an Observable\n *\n * ```ts\n * import { from } from 'rxjs';\n *\n * const array = [10, 20, 30];\n * const result = from(array);\n *\n * result.subscribe(x => console.log(x));\n *\n * // Logs:\n * // 10\n * // 20\n * // 30\n * ```\n *\n * Convert an infinite iterable (from a generator) to an Observable\n *\n * ```ts\n * import { from, take } from 'rxjs';\n *\n * function* generateDoubles(seed) {\n * let i = seed;\n * while (true) {\n * yield i;\n * i = 2 * i; // double it\n * }\n * }\n *\n * const iterator = generateDoubles(3);\n * const result = from(iterator).pipe(take(10));\n *\n * result.subscribe(x => console.log(x));\n *\n * // Logs:\n * // 3\n * // 6\n * // 12\n * // 24\n * // 48\n * // 96\n * // 192\n * // 384\n * // 768\n * // 1536\n * ```\n *\n * With `asyncScheduler`\n *\n * ```ts\n * import { from, asyncScheduler } from 'rxjs';\n *\n * console.log('start');\n *\n * const array = [10, 20, 30];\n * const result = from(array, asyncScheduler);\n *\n * result.subscribe(x => console.log(x));\n *\n * console.log('end');\n *\n * // Logs:\n * // 'start'\n * // 'end'\n * // 10\n * // 20\n * // 30\n * ```\n *\n * @see {@link fromEvent}\n * @see {@link fromEventPattern}\n *\n * @param {ObservableInput<T>} A subscription object, a Promise, an Observable-like,\n * an Array, an iterable, or an array-like object to be converted.\n * @param {SchedulerLike} An optional {@link SchedulerLike} on which to schedule the emission of values.\n * @return {Observable<T>}\n */\nexport function from<T>(input: ObservableInput<T>, scheduler?: SchedulerLike): Observable<T> {\n return scheduler ? scheduled(input, scheduler) : innerFrom(input);\n}\n", "import { SchedulerLike, ValueFromArray } from '../types';\nimport { Observable } from '../Observable';\nimport { popScheduler } from '../util/args';\nimport { from } from './from';\n\n// Devs are more likely to pass null or undefined than they are a scheduler\n// without accompanying values. To make things easier for (naughty) devs who\n// use the `strictNullChecks: false` TypeScript compiler option, these\n// overloads with explicit null and undefined values are included.\n\nexport function of(value: null): Observable<null>;\nexport function of(value: undefined): Observable<undefined>;\n\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function of(scheduler: SchedulerLike): Observable<never>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function of<A extends readonly unknown[]>(...valuesAndScheduler: [...A, SchedulerLike]): Observable<ValueFromArray<A>>;\n\nexport function of(): Observable<never>;\n/** @deprecated Do not specify explicit type parameters. Signatures with type parameters that cannot be inferred will be removed in v8. */\nexport function of<T>(): Observable<T>;\nexport function of<T>(value: T): Observable<T>;\nexport function of<A extends readonly unknown[]>(...values: A): Observable<ValueFromArray<A>>;\n\n/**\n * Converts the arguments to an observable sequence.\n *\n * <span class=\"informal\">Each argument becomes a `next` notification.</span>\n *\n * \n *\n * Unlike {@link from}, it does not do any flattening and emits each argument in whole\n * as a separate `next` notification.\n *\n * ## Examples\n *\n * Emit the values `10, 20, 30`\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * of(10, 20, 30)\n * .subscribe({\n * next: value => console.log('next:', value),\n * error: err => console.log('error:', err),\n * complete: () => console.log('the end'),\n * });\n *\n * // Outputs\n * // next: 10\n * // next: 20\n * // next: 30\n * // the end\n * ```\n *\n * Emit the array `[1, 2, 3]`\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * of([1, 2, 3])\n * .subscribe({\n * next: value => console.log('next:', value),\n * error: err => console.log('error:', err),\n * complete: () => console.log('the end'),\n * });\n *\n * // Outputs\n * // next: [1, 2, 3]\n * // the end\n * ```\n *\n * @see {@link from}\n * @see {@link range}\n *\n * @param {...T} values A comma separated list of arguments you want to be emitted\n * @return {Observable} An Observable that emits the arguments\n * described above and then completes.\n */\nexport function of<T>(...args: Array<T | SchedulerLike>): Observable<T> {\n const scheduler = popScheduler(args);\n return from(args as T[], scheduler);\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { SchedulerLike } from '../types';\nimport { isFunction } from '../util/isFunction';\n\n/**\n * Creates an observable that will create an error instance and push it to the consumer as an error\n * immediately upon subscription.\n *\n * <span class=\"informal\">Just errors and does nothing else</span>\n *\n * \n *\n * This creation function is useful for creating an observable that will create an error and error every\n * time it is subscribed to. Generally, inside of most operators when you might want to return an errored\n * observable, this is unnecessary. In most cases, such as in the inner return of {@link concatMap},\n * {@link mergeMap}, {@link defer}, and many others, you can simply throw the error, and RxJS will pick\n * that up and notify the consumer of the error.\n *\n * ## Example\n *\n * Create a simple observable that will create a new error with a timestamp and log it\n * and the message every time you subscribe to it\n *\n * ```ts\n * import { throwError } from 'rxjs';\n *\n * let errorCount = 0;\n *\n * const errorWithTimestamp$ = throwError(() => {\n * const error: any = new Error(`This is error number ${ ++errorCount }`);\n * error.timestamp = Date.now();\n * return error;\n * });\n *\n * errorWithTimestamp$.subscribe({\n * error: err => console.log(err.timestamp, err.message)\n * });\n *\n * errorWithTimestamp$.subscribe({\n * error: err => console.log(err.timestamp, err.message)\n * });\n *\n * // Logs the timestamp and a new error message for each subscription\n * ```\n *\n * ### Unnecessary usage\n *\n * Using `throwError` inside of an operator or creation function\n * with a callback, is usually not necessary\n *\n * ```ts\n * import { of, concatMap, timer, throwError } from 'rxjs';\n *\n * const delays$ = of(1000, 2000, Infinity, 3000);\n *\n * delays$.pipe(\n * concatMap(ms => {\n * if (ms < 10000) {\n * return timer(ms);\n * } else {\n * // This is probably overkill.\n * return throwError(() => new Error(`Invalid time ${ ms }`));\n * }\n * })\n * )\n * .subscribe({\n * next: console.log,\n * error: console.error\n * });\n * ```\n *\n * You can just throw the error instead\n *\n * ```ts\n * import { of, concatMap, timer } from 'rxjs';\n *\n * const delays$ = of(1000, 2000, Infinity, 3000);\n *\n * delays$.pipe(\n * concatMap(ms => {\n * if (ms < 10000) {\n * return timer(ms);\n * } else {\n * // Cleaner and easier to read for most folks.\n * throw new Error(`Invalid time ${ ms }`);\n * }\n * })\n * )\n * .subscribe({\n * next: console.log,\n * error: console.error\n * });\n * ```\n *\n * @param errorFactory A factory function that will create the error instance that is pushed.\n */\nexport function throwError(errorFactory: () => any): Observable<never>;\n\n/**\n * Returns an observable that will error with the specified error immediately upon subscription.\n *\n * @param error The error instance to emit\n * @deprecated Support for passing an error value will be removed in v8. Instead, pass a factory function to `throwError(() => new Error('test'))`. This is\n * because it will create the error at the moment it should be created and capture a more appropriate stack trace. If\n * for some reason you need to create the error ahead of time, you can still do that: `const err = new Error('test'); throwError(() => err);`.\n */\nexport function throwError(error: any): Observable<never>;\n\n/**\n * Notifies the consumer of an error using a given scheduler by scheduling it at delay `0` upon subscription.\n *\n * @param errorOrErrorFactory An error instance or error factory\n * @param scheduler A scheduler to use to schedule the error notification\n * @deprecated The `scheduler` parameter will be removed in v8.\n * Use `throwError` in combination with {@link observeOn}: `throwError(() => new Error('test')).pipe(observeOn(scheduler));`.\n * Details: https://rxjs.dev/deprecations/scheduler-argument\n */\nexport function throwError(errorOrErrorFactory: any, scheduler: SchedulerLike): Observable<never>;\n\nexport function throwError(errorOrErrorFactory: any, scheduler?: SchedulerLike): Observable<never> {\n const errorFactory = isFunction(errorOrErrorFactory) ? errorOrErrorFactory : () => errorOrErrorFactory;\n const init = (subscriber: Subscriber<never>) => subscriber.error(errorFactory());\n return new Observable(scheduler ? (subscriber) => scheduler.schedule(init as any, 0, subscriber) : init);\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface EmptyError extends Error {}\n\nexport interface EmptyErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): EmptyError;\n}\n\n/**\n * An error thrown when an Observable or a sequence was queried but has no\n * elements.\n *\n * @see {@link first}\n * @see {@link last}\n * @see {@link single}\n * @see {@link firstValueFrom}\n * @see {@link lastValueFrom}\n *\n * @class EmptyError\n */\nexport const EmptyError: EmptyErrorCtor = createErrorClass((_super) => function EmptyErrorImpl(this: any) {\n _super(this);\n this.name = 'EmptyError';\n this.message = 'no elements in sequence';\n});\n", "/**\n * Checks to see if a value is not only a `Date` object,\n * but a *valid* `Date` object that can be converted to a\n * number. For example, `new Date('blah')` is indeed an\n * `instanceof Date`, however it cannot be converted to a\n * number.\n */\nexport function isValidDate(value: any): value is Date {\n return value instanceof Date && !isNaN(value as any);\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\nexport function map<T, R>(project: (value: T, index: number) => R): OperatorFunction<T, R>;\n/** @deprecated Use a closure instead of a `thisArg`. Signatures accepting a `thisArg` will be removed in v8. */\nexport function map<T, R, A>(project: (this: A, value: T, index: number) => R, thisArg: A): OperatorFunction<T, R>;\n\n/**\n * Applies a given `project` function to each value emitted by the source\n * Observable, and emits the resulting values as an Observable.\n *\n * <span class=\"informal\">Like [Array.prototype.map()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map),\n * it passes each source value through a transformation function to get\n * corresponding output values.</span>\n *\n * \n *\n * Similar to the well known `Array.prototype.map` function, this operator\n * applies a projection to each value and emits that projection in the output\n * Observable.\n *\n * ## Example\n *\n * Map every click to the `clientX` position of that click\n *\n * ```ts\n * import { fromEvent, map } from 'rxjs';\n *\n * const clicks = fromEvent<PointerEvent>(document, 'click');\n * const positions = clicks.pipe(map(ev => ev.clientX));\n *\n * positions.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link mapTo}\n * @see {@link pluck}\n *\n * @param {function(value: T, index: number): R} project The function to apply\n * to each `value` emitted by the source Observable. The `index` parameter is\n * the number `i` for the i-th emission that has happened since the\n * subscription, starting from the number `0`.\n * @param {any} [thisArg] An optional argument to define what `this` is in the\n * `project` function.\n * @return A function that returns an Observable that emits the values from the\n * source Observable transformed by the given `project` function.\n */\nexport function map<T, R>(project: (value: T, index: number) => R, thisArg?: any): OperatorFunction<T, R> {\n return operate((source, subscriber) => {\n // The index of the value from the source. Used with projection.\n let index = 0;\n // Subscribe to the source, all errors and completions are sent along\n // to the consumer.\n source.subscribe(\n createOperatorSubscriber(subscriber, (value: T) => {\n // Call the projection function with the appropriate this context,\n // and send the resulting value to the consumer.\n subscriber.next(project.call(thisArg, value, index++));\n })\n );\n });\n}\n", "import { OperatorFunction } from \"../types\";\nimport { map } from \"../operators/map\";\n\nconst { isArray } = Array;\n\nfunction callOrApply<T, R>(fn: ((...values: T[]) => R), args: T|T[]): R {\n return isArray(args) ? fn(...args) : fn(args);\n}\n\n/**\n * Used in several -- mostly deprecated -- situations where we need to \n * apply a list of arguments or a single argument to a result selector.\n */\nexport function mapOneOrManyArgs<T, R>(fn: ((...values: T[]) => R)): OperatorFunction<T|T[], R> {\n return map(args => callOrApply(fn, args))\n}", "const { isArray } = Array;\nconst { getPrototypeOf, prototype: objectProto, keys: getKeys } = Object;\n\n/**\n * Used in functions where either a list of arguments, a single array of arguments, or a\n * dictionary of arguments can be returned. Returns an object with an `args` property with\n * the arguments in an array, if it is a dictionary, it will also return the `keys` in another\n * property.\n */\nexport function argsArgArrayOrObject<T, O extends Record<string, T>>(args: T[] | [O] | [T[]]): { args: T[]; keys: string[] | null } {\n if (args.length === 1) {\n const first = args[0];\n if (isArray(first)) {\n return { args: first, keys: null };\n }\n if (isPOJO(first)) {\n const keys = getKeys(first);\n return {\n args: keys.map((key) => first[key]),\n keys,\n };\n }\n }\n\n return { args: args as T[], keys: null };\n}\n\nfunction isPOJO(obj: any): obj is object {\n return obj && typeof obj === 'object' && getPrototypeOf(obj) === objectProto;\n}\n", "export function createObject(keys: string[], values: any[]) {\n return keys.reduce((result, key, i) => ((result[key] = values[i]), result), {} as any);\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInput, SchedulerLike, ObservedValueOf, ObservableInputTuple } from '../types';\nimport { argsArgArrayOrObject } from '../util/argsArgArrayOrObject';\nimport { Subscriber } from '../Subscriber';\nimport { from } from './from';\nimport { identity } from '../util/identity';\nimport { Subscription } from '../Subscription';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { popResultSelector, popScheduler } from '../util/args';\nimport { createObject } from '../util/createObject';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { AnyCatcher } from '../AnyCatcher';\nimport { executeSchedule } from '../util/executeSchedule';\n\n// combineLatest(any)\n// We put this first because we need to catch cases where the user has supplied\n// _exactly `any`_ as the argument. Since `any` literally matches _anything_,\n// we don't want it to randomly hit one of the other type signatures below,\n// as we have no idea at build-time what type we should be returning when given an any.\n\n/**\n * You have passed `any` here, we can't figure out if it is\n * an array or an object, so you're getting `unknown`. Use better types.\n * @param arg Something typed as `any`\n */\nexport function combineLatest<T extends AnyCatcher>(arg: T): Observable<unknown>;\n\n// combineLatest([a, b, c])\nexport function combineLatest(sources: []): Observable<never>;\nexport function combineLatest<A extends readonly unknown[]>(sources: readonly [...ObservableInputTuple<A>]): Observable<A>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[], R>(\n sources: readonly [...ObservableInputTuple<A>],\n resultSelector: (...values: A) => R,\n scheduler: SchedulerLike\n): Observable<R>;\nexport function combineLatest<A extends readonly unknown[], R>(\n sources: readonly [...ObservableInputTuple<A>],\n resultSelector: (...values: A) => R\n): Observable<R>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[]>(\n sources: readonly [...ObservableInputTuple<A>],\n scheduler: SchedulerLike\n): Observable<A>;\n\n// combineLatest(a, b, c)\n/** @deprecated Pass an array of sources instead. The rest-parameters signature will be removed in v8. Details: https://rxjs.dev/deprecations/array-argument */\nexport function combineLatest<A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): Observable<A>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[], R>(\n ...sourcesAndResultSelectorAndScheduler: [...ObservableInputTuple<A>, (...values: A) => R, SchedulerLike]\n): Observable<R>;\n/** @deprecated Pass an array of sources instead. The rest-parameters signature will be removed in v8. Details: https://rxjs.dev/deprecations/array-argument */\nexport function combineLatest<A extends readonly unknown[], R>(\n ...sourcesAndResultSelector: [...ObservableInputTuple<A>, (...values: A) => R]\n): Observable<R>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `combineLatestAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function combineLatest<A extends readonly unknown[]>(\n ...sourcesAndScheduler: [...ObservableInputTuple<A>, SchedulerLike]\n): Observable<A>;\n\n// combineLatest({a, b, c})\nexport function combineLatest(sourcesObject: { [K in any]: never }): Observable<never>;\nexport function combineLatest<T extends Record<string, ObservableInput<any>>>(\n sourcesObject: T\n): Observable<{ [K in keyof T]: ObservedValueOf<T[K]> }>;\n\n/**\n * Combines multiple Observables to create an Observable whose values are\n * calculated from the latest values of each of its input Observables.\n *\n * <span class=\"informal\">Whenever any input Observable emits a value, it\n * computes a formula using the latest values from all the inputs, then emits\n * the output of that formula.</span>\n *\n * \n *\n * `combineLatest` combines the values from all the Observables passed in the\n * observables array. This is done by subscribing to each Observable in order and,\n * whenever any Observable emits, collecting an array of the most recent\n * values from each Observable. So if you pass `n` Observables to this operator,\n * the returned Observable will always emit an array of `n` values, in an order\n * corresponding to the order of the passed Observables (the value from the first Observable\n * will be at index 0 of the array and so on).\n *\n * Static version of `combineLatest` accepts an array of Observables. Note that an array of\n * Observables is a good choice, if you don't know beforehand how many Observables\n * you will combine. Passing an empty array will result in an Observable that\n * completes immediately.\n *\n * To ensure the output array always has the same length, `combineLatest` will\n * actually wait for all input Observables to emit at least once,\n * before it starts emitting results. This means if some Observable emits\n * values before other Observables started emitting, all these values but the last\n * will be lost. On the other hand, if some Observable does not emit a value but\n * completes, resulting Observable will complete at the same moment without\n * emitting anything, since it will now be impossible to include a value from the\n * completed Observable in the resulting array. Also, if some input Observable does\n * not emit any value and never completes, `combineLatest` will also never emit\n * and never complete, since, again, it will wait for all streams to emit some\n * value.\n *\n * If at least one Observable was passed to `combineLatest` and all passed Observables\n * emitted something, the resulting Observable will complete when all combined\n * streams complete. So even if some Observable completes, the result of\n * `combineLatest` will still emit values when other Observables do. In case\n * of a completed Observable, its value from now on will always be the last\n * emitted value. On the other hand, if any Observable errors, `combineLatest`\n * will error immediately as well, and all other Observables will be unsubscribed.\n *\n * ## Examples\n *\n * Combine two timer Observables\n *\n * ```ts\n * import { timer, combineLatest } from 'rxjs';\n *\n * const firstTimer = timer(0, 1000); // emit 0, 1, 2... after every second, starting from now\n * const secondTimer = timer(500, 1000); // emit 0, 1, 2... after every second, starting 0,5s from now\n * const combinedTimers = combineLatest([firstTimer, secondTimer]);\n * combinedTimers.subscribe(value => console.log(value));\n * // Logs\n * // [0, 0] after 0.5s\n * // [1, 0] after 1s\n * // [1, 1] after 1.5s\n * // [2, 1] after 2s\n * ```\n *\n * Combine a dictionary of Observables\n *\n * ```ts\n * import { of, delay, startWith, combineLatest } from 'rxjs';\n *\n * const observables = {\n * a: of(1).pipe(delay(1000), startWith(0)),\n * b: of(5).pipe(delay(5000), startWith(0)),\n * c: of(10).pipe(delay(10000), startWith(0))\n * };\n * const combined = combineLatest(observables);\n * combined.subscribe(value => console.log(value));\n * // Logs\n * // { a: 0, b: 0, c: 0 } immediately\n * // { a: 1, b: 0, c: 0 } after 1s\n * // { a: 1, b: 5, c: 0 } after 5s\n * // { a: 1, b: 5, c: 10 } after 10s\n * ```\n *\n * Combine an array of Observables\n *\n * ```ts\n * import { of, delay, startWith, combineLatest } from 'rxjs';\n *\n * const observables = [1, 5, 10].map(\n * n => of(n).pipe(\n * delay(n * 1000), // emit 0 and then emit n after n seconds\n * startWith(0)\n * )\n * );\n * const combined = combineLatest(observables);\n * combined.subscribe(value => console.log(value));\n * // Logs\n * // [0, 0, 0] immediately\n * // [1, 0, 0] after 1s\n * // [1, 5, 0] after 5s\n * // [1, 5, 10] after 10s\n * ```\n *\n * Use map operator to dynamically calculate the Body-Mass Index\n *\n * ```ts\n * import { of, combineLatest, map } from 'rxjs';\n *\n * const weight = of(70, 72, 76, 79, 75);\n * const height = of(1.76, 1.77, 1.78);\n * const bmi = combineLatest([weight, height]).pipe(\n * map(([w, h]) => w / (h * h)),\n * );\n * bmi.subscribe(x => console.log('BMI is ' + x));\n *\n * // With output to console:\n * // BMI is 24.212293388429753\n * // BMI is 23.93948099205209\n * // BMI is 23.671253629592222\n * ```\n *\n * @see {@link combineLatestAll}\n * @see {@link merge}\n * @see {@link withLatestFrom}\n *\n * @param {ObservableInput} [observables] An array of input Observables to combine with each other.\n * An array of Observables must be given as the first argument.\n * @param {function} [project] An optional function to project the values from\n * the combined latest values into a new value on the output Observable.\n * @param {SchedulerLike} [scheduler=null] The {@link SchedulerLike} to use for subscribing to\n * each input Observable.\n * @return {Observable} An Observable of projected values from the most recent\n * values from each input Observable, or an array of the most recent values from\n * each input Observable.\n */\nexport function combineLatest<O extends ObservableInput<any>, R>(...args: any[]): Observable<R> | Observable<ObservedValueOf<O>[]> {\n const scheduler = popScheduler(args);\n const resultSelector = popResultSelector(args);\n\n const { args: observables, keys } = argsArgArrayOrObject(args);\n\n if (observables.length === 0) {\n // If no observables are passed, or someone has passed an empty array\n // of observables, or even an empty object POJO, we need to just\n // complete (EMPTY), but we have to honor the scheduler provided if any.\n return from([], scheduler as any);\n }\n\n const result = new Observable<ObservedValueOf<O>[]>(\n combineLatestInit(\n observables as ObservableInput<ObservedValueOf<O>>[],\n scheduler,\n keys\n ? // A handler for scrubbing the array of args into a dictionary.\n (values) => createObject(keys, values)\n : // A passthrough to just return the array\n identity\n )\n );\n\n return resultSelector ? (result.pipe(mapOneOrManyArgs(resultSelector)) as Observable<R>) : result;\n}\n\nexport function combineLatestInit(\n observables: ObservableInput<any>[],\n scheduler?: SchedulerLike,\n valueTransform: (values: any[]) => any = identity\n) {\n return (subscriber: Subscriber<any>) => {\n // The outer subscription. We're capturing this in a function\n // because we may have to schedule it.\n maybeSchedule(\n scheduler,\n () => {\n const { length } = observables;\n // A store for the values each observable has emitted so far. We match observable to value on index.\n const values = new Array(length);\n // The number of currently active subscriptions, as they complete, we decrement this number to see if\n // we are all done combining values, so we can complete the result.\n let active = length;\n // The number of inner sources that still haven't emitted the first value\n // We need to track this because all sources need to emit one value in order\n // to start emitting values.\n let remainingFirstValues = length;\n // The loop to kick off subscription. We're keying everything on index `i` to relate the observables passed\n // in to the slot in the output array or the key in the array of keys in the output dictionary.\n for (let i = 0; i < length; i++) {\n maybeSchedule(\n scheduler,\n () => {\n const source = from(observables[i], scheduler as any);\n let hasFirstValue = false;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // When we get a value, record it in our set of values.\n values[i] = value;\n if (!hasFirstValue) {\n // If this is our first value, record that.\n hasFirstValue = true;\n remainingFirstValues--;\n }\n if (!remainingFirstValues) {\n // We're not waiting for any more\n // first values, so we can emit!\n subscriber.next(valueTransform(values.slice()));\n }\n },\n () => {\n if (!--active) {\n // We only complete the result if we have no more active\n // inner observables.\n subscriber.complete();\n }\n }\n )\n );\n },\n subscriber\n );\n }\n },\n subscriber\n );\n };\n}\n\n/**\n * A small utility to handle the couple of locations where we want to schedule if a scheduler was provided,\n * but we don't if there was no scheduler.\n */\nfunction maybeSchedule(scheduler: SchedulerLike | undefined, execute: () => void, subscription: Subscription) {\n if (scheduler) {\n executeSchedule(subscription, scheduler, execute);\n } else {\n execute();\n }\n}\n", "import { Observable } from '../Observable';\nimport { innerFrom } from '../observable/innerFrom';\nimport { Subscriber } from '../Subscriber';\nimport { ObservableInput, SchedulerLike } from '../types';\nimport { executeSchedule } from '../util/executeSchedule';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * A process embodying the general \"merge\" strategy. This is used in\n * `mergeMap` and `mergeScan` because the logic is otherwise nearly identical.\n * @param source The original source observable\n * @param subscriber The consumer subscriber\n * @param project The projection function to get our inner sources\n * @param concurrent The number of concurrent inner subscriptions\n * @param onBeforeNext Additional logic to apply before nexting to our consumer\n * @param expand If `true` this will perform an \"expand\" strategy, which differs only\n * in that it recurses, and the inner subscription must be schedule-able.\n * @param innerSubScheduler A scheduler to use to schedule inner subscriptions,\n * this is to support the expand strategy, mostly, and should be deprecated\n */\nexport function mergeInternals<T, R>(\n source: Observable<T>,\n subscriber: Subscriber<R>,\n project: (value: T, index: number) => ObservableInput<R>,\n concurrent: number,\n onBeforeNext?: (innerValue: R) => void,\n expand?: boolean,\n innerSubScheduler?: SchedulerLike,\n additionalFinalizer?: () => void\n) {\n // Buffered values, in the event of going over our concurrency limit\n const buffer: T[] = [];\n // The number of active inner subscriptions.\n let active = 0;\n // An index to pass to our accumulator function\n let index = 0;\n // Whether or not the outer source has completed.\n let isComplete = false;\n\n /**\n * Checks to see if we can complete our result or not.\n */\n const checkComplete = () => {\n // If the outer has completed, and nothing is left in the buffer,\n // and we don't have any active inner subscriptions, then we can\n // Emit the state and complete.\n if (isComplete && !buffer.length && !active) {\n subscriber.complete();\n }\n };\n\n // If we're under our concurrency limit, just start the inner subscription, otherwise buffer and wait.\n const outerNext = (value: T) => (active < concurrent ? doInnerSub(value) : buffer.push(value));\n\n const doInnerSub = (value: T) => {\n // If we're expanding, we need to emit the outer values and the inner values\n // as the inners will \"become outers\" in a way as they are recursively fed\n // back to the projection mechanism.\n expand && subscriber.next(value as any);\n\n // Increment the number of active subscriptions so we can track it\n // against our concurrency limit later.\n active++;\n\n // A flag used to show that the inner observable completed.\n // This is checked during finalization to see if we should\n // move to the next item in the buffer, if there is on.\n let innerComplete = false;\n\n // Start our inner subscription.\n innerFrom(project(value, index++)).subscribe(\n createOperatorSubscriber(\n subscriber,\n (innerValue) => {\n // `mergeScan` has additional handling here. For example\n // taking the inner value and updating state.\n onBeforeNext?.(innerValue);\n\n if (expand) {\n // If we're expanding, then just recurse back to our outer\n // handler. It will emit the value first thing.\n outerNext(innerValue as any);\n } else {\n // Otherwise, emit the inner value.\n subscriber.next(innerValue);\n }\n },\n () => {\n // Flag that we have completed, so we know to check the buffer\n // during finalization.\n innerComplete = true;\n },\n // Errors are passed to the destination.\n undefined,\n () => {\n // During finalization, if the inner completed (it wasn't errored or\n // cancelled), then we want to try the next item in the buffer if\n // there is one.\n if (innerComplete) {\n // We have to wrap this in a try/catch because it happens during\n // finalization, possibly asynchronously, and we want to pass\n // any errors that happen (like in a projection function) to\n // the outer Subscriber.\n try {\n // INNER SOURCE COMPLETE\n // Decrement the active count to ensure that the next time\n // we try to call `doInnerSub`, the number is accurate.\n active--;\n // If we have more values in the buffer, try to process those\n // Note that this call will increment `active` ahead of the\n // next conditional, if there were any more inner subscriptions\n // to start.\n while (buffer.length && active < concurrent) {\n const bufferedValue = buffer.shift()!;\n // Particularly for `expand`, we need to check to see if a scheduler was provided\n // for when we want to start our inner subscription. Otherwise, we just start\n // are next inner subscription.\n if (innerSubScheduler) {\n executeSchedule(subscriber, innerSubScheduler, () => doInnerSub(bufferedValue));\n } else {\n doInnerSub(bufferedValue);\n }\n }\n // Check to see if we can complete, and complete if so.\n checkComplete();\n } catch (err) {\n subscriber.error(err);\n }\n }\n }\n )\n );\n };\n\n // Subscribe to our source observable.\n source.subscribe(\n createOperatorSubscriber(subscriber, outerNext, () => {\n // Outer completed, make a note of it, and check to see if we can complete everything.\n isComplete = true;\n checkComplete();\n })\n );\n\n // Additional finalization (for when the destination is torn down).\n // Other finalization is added implicitly via subscription above.\n return () => {\n additionalFinalizer?.();\n };\n}\n", "import { ObservableInput, OperatorFunction, ObservedValueOf } from '../types';\nimport { map } from './map';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { mergeInternals } from './mergeInternals';\nimport { isFunction } from '../util/isFunction';\n\n/* tslint:disable:max-line-length */\nexport function mergeMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n concurrent?: number\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function mergeMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: undefined,\n concurrent?: number\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function mergeMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: (outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R,\n concurrent?: number\n): OperatorFunction<T, R>;\n/* tslint:enable:max-line-length */\n\n/**\n * Projects each source value to an Observable which is merged in the output\n * Observable.\n *\n * <span class=\"informal\">Maps each value to an Observable, then flattens all of\n * these inner Observables using {@link mergeAll}.</span>\n *\n * \n *\n * Returns an Observable that emits items based on applying a function that you\n * supply to each item emitted by the source Observable, where that function\n * returns an Observable, and then merging those resulting Observables and\n * emitting the results of this merger.\n *\n * ## Example\n *\n * Map and flatten each letter to an Observable ticking every 1 second\n *\n * ```ts\n * import { of, mergeMap, interval, map } from 'rxjs';\n *\n * const letters = of('a', 'b', 'c');\n * const result = letters.pipe(\n * mergeMap(x => interval(1000).pipe(map(i => x + i)))\n * );\n *\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // a0\n * // b0\n * // c0\n * // a1\n * // b1\n * // c1\n * // continues to list a, b, c every second with respective ascending integers\n * ```\n *\n * @see {@link concatMap}\n * @see {@link exhaustMap}\n * @see {@link merge}\n * @see {@link mergeAll}\n * @see {@link mergeMapTo}\n * @see {@link mergeScan}\n * @see {@link switchMap}\n *\n * @param {function(value: T, ?index: number): ObservableInput} project A function\n * that, when applied to an item emitted by the source Observable, returns an\n * Observable.\n * @param {number} [concurrent=Infinity] Maximum number of input\n * Observables being subscribed to concurrently.\n * @return A function that returns an Observable that emits the result of\n * applying the projection function (and the optional deprecated\n * `resultSelector`) to each item emitted by the source Observable and merging\n * the results of the Observables obtained from this transformation.\n */\nexport function mergeMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector?: ((outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R) | number,\n concurrent: number = Infinity\n): OperatorFunction<T, ObservedValueOf<O> | R> {\n if (isFunction(resultSelector)) {\n // DEPRECATED PATH\n return mergeMap((a, i) => map((b: any, ii: number) => resultSelector(a, b, i, ii))(innerFrom(project(a, i))), concurrent);\n } else if (typeof resultSelector === 'number') {\n concurrent = resultSelector;\n }\n\n return operate((source, subscriber) => mergeInternals(source, subscriber, project, concurrent));\n}\n", "import { mergeMap } from './mergeMap';\nimport { identity } from '../util/identity';\nimport { OperatorFunction, ObservableInput, ObservedValueOf } from '../types';\n\n/**\n * Converts a higher-order Observable into a first-order Observable which\n * concurrently delivers all values that are emitted on the inner Observables.\n *\n * <span class=\"informal\">Flattens an Observable-of-Observables.</span>\n *\n * \n *\n * `mergeAll` subscribes to an Observable that emits Observables, also known as\n * a higher-order Observable. Each time it observes one of these emitted inner\n * Observables, it subscribes to that and delivers all the values from the\n * inner Observable on the output Observable. The output Observable only\n * completes once all inner Observables have completed. Any error delivered by\n * a inner Observable will be immediately emitted on the output Observable.\n *\n * ## Examples\n *\n * Spawn a new interval Observable for each click event, and blend their outputs as one Observable\n *\n * ```ts\n * import { fromEvent, map, interval, mergeAll } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const higherOrder = clicks.pipe(map(() => interval(1000)));\n * const firstOrder = higherOrder.pipe(mergeAll());\n *\n * firstOrder.subscribe(x => console.log(x));\n * ```\n *\n * Count from 0 to 9 every second for each click, but only allow 2 concurrent timers\n *\n * ```ts\n * import { fromEvent, map, interval, take, mergeAll } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const higherOrder = clicks.pipe(\n * map(() => interval(1000).pipe(take(10)))\n * );\n * const firstOrder = higherOrder.pipe(mergeAll(2));\n *\n * firstOrder.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link combineLatestAll}\n * @see {@link concatAll}\n * @see {@link exhaustAll}\n * @see {@link merge}\n * @see {@link mergeMap}\n * @see {@link mergeMapTo}\n * @see {@link mergeScan}\n * @see {@link switchAll}\n * @see {@link switchMap}\n * @see {@link zipAll}\n *\n * @param {number} [concurrent=Infinity] Maximum number of inner\n * Observables being subscribed to concurrently.\n * @return A function that returns an Observable that emits values coming from\n * all the inner Observables emitted by the source Observable.\n */\nexport function mergeAll<O extends ObservableInput<any>>(concurrent: number = Infinity): OperatorFunction<O, ObservedValueOf<O>> {\n return mergeMap(identity, concurrent);\n}\n", "import { mergeAll } from './mergeAll';\nimport { OperatorFunction, ObservableInput, ObservedValueOf } from '../types';\n\n/**\n * Converts a higher-order Observable into a first-order Observable by\n * concatenating the inner Observables in order.\n *\n * <span class=\"informal\">Flattens an Observable-of-Observables by putting one\n * inner Observable after the other.</span>\n *\n * \n *\n * Joins every Observable emitted by the source (a higher-order Observable), in\n * a serial fashion. It subscribes to each inner Observable only after the\n * previous inner Observable has completed, and merges all of their values into\n * the returned observable.\n *\n * __Warning:__ If the source Observable emits Observables quickly and\n * endlessly, and the inner Observables it emits generally complete slower than\n * the source emits, you can run into memory issues as the incoming Observables\n * collect in an unbounded buffer.\n *\n * Note: `concatAll` is equivalent to `mergeAll` with concurrency parameter set\n * to `1`.\n *\n * ## Example\n *\n * For each click event, tick every second from 0 to 3, with no concurrency\n *\n * ```ts\n * import { fromEvent, map, interval, take, concatAll } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const higherOrder = clicks.pipe(\n * map(() => interval(1000).pipe(take(4)))\n * );\n * const firstOrder = higherOrder.pipe(concatAll());\n * firstOrder.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // (results are not concurrent)\n * // For every click on the \"document\" it will emit values 0 to 3 spaced\n * // on a 1000ms interval\n * // one click = 1000ms-> 0 -1000ms-> 1 -1000ms-> 2 -1000ms-> 3\n * ```\n *\n * @see {@link combineLatestAll}\n * @see {@link concat}\n * @see {@link concatMap}\n * @see {@link concatMapTo}\n * @see {@link exhaustAll}\n * @see {@link mergeAll}\n * @see {@link switchAll}\n * @see {@link switchMap}\n * @see {@link zipAll}\n *\n * @return A function that returns an Observable emitting values from all the\n * inner Observables concatenated.\n */\nexport function concatAll<O extends ObservableInput<any>>(): OperatorFunction<O, ObservedValueOf<O>> {\n return mergeAll(1);\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInputTuple, SchedulerLike } from '../types';\nimport { concatAll } from '../operators/concatAll';\nimport { popScheduler } from '../util/args';\nimport { from } from './from';\n\nexport function concat<T extends readonly unknown[]>(...inputs: [...ObservableInputTuple<T>]): Observable<T[number]>;\nexport function concat<T extends readonly unknown[]>(\n ...inputsAndScheduler: [...ObservableInputTuple<T>, SchedulerLike]\n): Observable<T[number]>;\n\n/**\n * Creates an output Observable which sequentially emits all values from the first given\n * Observable and then moves on to the next.\n *\n * <span class=\"informal\">Concatenates multiple Observables together by\n * sequentially emitting their values, one Observable after the other.</span>\n *\n * \n *\n * `concat` joins multiple Observables together, by subscribing to them one at a time and\n * merging their results into the output Observable. You can pass either an array of\n * Observables, or put them directly as arguments. Passing an empty array will result\n * in Observable that completes immediately.\n *\n * `concat` will subscribe to first input Observable and emit all its values, without\n * changing or affecting them in any way. When that Observable completes, it will\n * subscribe to then next Observable passed and, again, emit its values. This will be\n * repeated, until the operator runs out of Observables. When last input Observable completes,\n * `concat` will complete as well. At any given moment only one Observable passed to operator\n * emits values. If you would like to emit values from passed Observables concurrently, check out\n * {@link merge} instead, especially with optional `concurrent` parameter. As a matter of fact,\n * `concat` is an equivalent of `merge` operator with `concurrent` parameter set to `1`.\n *\n * Note that if some input Observable never completes, `concat` will also never complete\n * and Observables following the one that did not complete will never be subscribed. On the other\n * hand, if some Observable simply completes immediately after it is subscribed, it will be\n * invisible for `concat`, which will just move on to the next Observable.\n *\n * If any Observable in chain errors, instead of passing control to the next Observable,\n * `concat` will error immediately as well. Observables that would be subscribed after\n * the one that emitted error, never will.\n *\n * If you pass to `concat` the same Observable many times, its stream of values\n * will be \"replayed\" on every subscription, which means you can repeat given Observable\n * as many times as you like. If passing the same Observable to `concat` 1000 times becomes tedious,\n * you can always use {@link repeat}.\n *\n * ## Examples\n *\n * Concatenate a timer counting from 0 to 3 with a synchronous sequence from 1 to 10\n *\n * ```ts\n * import { interval, take, range, concat } from 'rxjs';\n *\n * const timer = interval(1000).pipe(take(4));\n * const sequence = range(1, 10);\n * const result = concat(timer, sequence);\n * result.subscribe(x => console.log(x));\n *\n * // results in:\n * // 0 -1000ms-> 1 -1000ms-> 2 -1000ms-> 3 -immediate-> 1 ... 10\n * ```\n *\n * Concatenate 3 Observables\n *\n * ```ts\n * import { interval, take, concat } from 'rxjs';\n *\n * const timer1 = interval(1000).pipe(take(10));\n * const timer2 = interval(2000).pipe(take(6));\n * const timer3 = interval(500).pipe(take(10));\n *\n * const result = concat(timer1, timer2, timer3);\n * result.subscribe(x => console.log(x));\n *\n * // results in the following:\n * // (Prints to console sequentially)\n * // -1000ms-> 0 -1000ms-> 1 -1000ms-> ... 9\n * // -2000ms-> 0 -2000ms-> 1 -2000ms-> ... 5\n * // -500ms-> 0 -500ms-> 1 -500ms-> ... 9\n * ```\n *\n * Concatenate the same Observable to repeat it\n *\n * ```ts\n * import { interval, take, concat } from 'rxjs';\n *\n * const timer = interval(1000).pipe(take(2));\n *\n * concat(timer, timer) // concatenating the same Observable!\n * .subscribe({\n * next: value => console.log(value),\n * complete: () => console.log('...and it is done!')\n * });\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 0 after 3s\n * // 1 after 4s\n * // '...and it is done!' also after 4s\n * ```\n *\n * @see {@link concatAll}\n * @see {@link concatMap}\n * @see {@link concatMapTo}\n * @see {@link startWith}\n * @see {@link endWith}\n *\n * @param args Input Observables to concatenate.\n */\nexport function concat(...args: any[]): Observable<unknown> {\n return concatAll()(from(args, popScheduler(args)));\n}\n", "import { Observable } from '../Observable';\nimport { ObservedValueOf, ObservableInput } from '../types';\nimport { innerFrom } from './innerFrom';\n\n/**\n * Creates an Observable that, on subscribe, calls an Observable factory to\n * make an Observable for each new Observer.\n *\n * <span class=\"informal\">Creates the Observable lazily, that is, only when it\n * is subscribed.\n * </span>\n *\n * \n *\n * `defer` allows you to create an Observable only when the Observer\n * subscribes. It waits until an Observer subscribes to it, calls the given\n * factory function to get an Observable -- where a factory function typically\n * generates a new Observable -- and subscribes the Observer to this Observable.\n * In case the factory function returns a falsy value, then EMPTY is used as\n * Observable instead. Last but not least, an exception during the factory\n * function call is transferred to the Observer by calling `error`.\n *\n * ## Example\n *\n * Subscribe to either an Observable of clicks or an Observable of interval, at random\n *\n * ```ts\n * import { defer, fromEvent, interval } from 'rxjs';\n *\n * const clicksOrInterval = defer(() => {\n * return Math.random() > 0.5\n * ? fromEvent(document, 'click')\n * : interval(1000);\n * });\n * clicksOrInterval.subscribe(x => console.log(x));\n *\n * // Results in the following behavior:\n * // If the result of Math.random() is greater than 0.5 it will listen\n * // for clicks anywhere on the \"document\"; when document is clicked it\n * // will log a MouseEvent object to the console. If the result is less\n * // than 0.5 it will emit ascending numbers, one every second(1000ms).\n * ```\n *\n * @see {@link Observable}\n *\n * @param {function(): ObservableInput} observableFactory The Observable\n * factory function to invoke for each Observer that subscribes to the output\n * Observable. May also return a Promise, which will be converted on the fly\n * to an Observable.\n * @return {Observable} An Observable whose Observers' subscriptions trigger\n * an invocation of the given Observable factory function.\n */\nexport function defer<R extends ObservableInput<any>>(observableFactory: () => R): Observable<ObservedValueOf<R>> {\n return new Observable<ObservedValueOf<R>>((subscriber) => {\n innerFrom(observableFactory()).subscribe(subscriber);\n });\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { Observable } from '../Observable';\nimport { mergeMap } from '../operators/mergeMap';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isFunction } from '../util/isFunction';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\n\n// These constants are used to create handler registry functions using array mapping below.\nconst nodeEventEmitterMethods = ['addListener', 'removeListener'] as const;\nconst eventTargetMethods = ['addEventListener', 'removeEventListener'] as const;\nconst jqueryMethods = ['on', 'off'] as const;\n\nexport interface NodeStyleEventEmitter {\n addListener(eventName: string | symbol, handler: NodeEventHandler): this;\n removeListener(eventName: string | symbol, handler: NodeEventHandler): this;\n}\n\nexport type NodeEventHandler = (...args: any[]) => void;\n\n// For APIs that implement `addListener` and `removeListener` methods that may\n// not use the same arguments or return EventEmitter values\n// such as React Native\nexport interface NodeCompatibleEventEmitter {\n addListener(eventName: string, handler: NodeEventHandler): void | {};\n removeListener(eventName: string, handler: NodeEventHandler): void | {};\n}\n\n// Use handler types like those in @types/jquery. See:\n// https://github.com/DefinitelyTyped/DefinitelyTyped/blob/847731ba1d7fa6db6b911c0e43aa0afe596e7723/types/jquery/misc.d.ts#L6395\nexport interface JQueryStyleEventEmitter<TContext, T> {\n on(eventName: string, handler: (this: TContext, t: T, ...args: any[]) => any): void;\n off(eventName: string, handler: (this: TContext, t: T, ...args: any[]) => any): void;\n}\n\nexport interface EventListenerObject<E> {\n handleEvent(evt: E): void;\n}\n\nexport interface HasEventTargetAddRemove<E> {\n addEventListener(\n type: string,\n listener: ((evt: E) => void) | EventListenerObject<E> | null,\n options?: boolean | AddEventListenerOptions\n ): void;\n removeEventListener(\n type: string,\n listener: ((evt: E) => void) | EventListenerObject<E> | null,\n options?: EventListenerOptions | boolean\n ): void;\n}\n\nexport interface EventListenerOptions {\n capture?: boolean;\n passive?: boolean;\n once?: boolean;\n}\n\nexport interface AddEventListenerOptions extends EventListenerOptions {\n once?: boolean;\n passive?: boolean;\n}\n\nexport function fromEvent<T>(target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>, eventName: string): Observable<T>;\nexport function fromEvent<T, R>(\n target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>,\n eventName: string,\n resultSelector: (event: T) => R\n): Observable<R>;\nexport function fromEvent<T>(\n target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>,\n eventName: string,\n options: EventListenerOptions\n): Observable<T>;\nexport function fromEvent<T, R>(\n target: HasEventTargetAddRemove<T> | ArrayLike<HasEventTargetAddRemove<T>>,\n eventName: string,\n options: EventListenerOptions,\n resultSelector: (event: T) => R\n): Observable<R>;\n\nexport function fromEvent(target: NodeStyleEventEmitter | ArrayLike<NodeStyleEventEmitter>, eventName: string): Observable<unknown>;\n/** @deprecated Do not specify explicit type parameters. Signatures with type parameters that cannot be inferred will be removed in v8. */\nexport function fromEvent<T>(target: NodeStyleEventEmitter | ArrayLike<NodeStyleEventEmitter>, eventName: string): Observable<T>;\nexport function fromEvent<R>(\n target: NodeStyleEventEmitter | ArrayLike<NodeStyleEventEmitter>,\n eventName: string,\n resultSelector: (...args: any[]) => R\n): Observable<R>;\n\nexport function fromEvent(\n target: NodeCompatibleEventEmitter | ArrayLike<NodeCompatibleEventEmitter>,\n eventName: string\n): Observable<unknown>;\n/** @deprecated Do not specify explicit type parameters. Signatures with type parameters that cannot be inferred will be removed in v8. */\nexport function fromEvent<T>(target: NodeCompatibleEventEmitter | ArrayLike<NodeCompatibleEventEmitter>, eventName: string): Observable<T>;\nexport function fromEvent<R>(\n target: NodeCompatibleEventEmitter | ArrayLike<NodeCompatibleEventEmitter>,\n eventName: string,\n resultSelector: (...args: any[]) => R\n): Observable<R>;\n\nexport function fromEvent<T>(\n target: JQueryStyleEventEmitter<any, T> | ArrayLike<JQueryStyleEventEmitter<any, T>>,\n eventName: string\n): Observable<T>;\nexport function fromEvent<T, R>(\n target: JQueryStyleEventEmitter<any, T> | ArrayLike<JQueryStyleEventEmitter<any, T>>,\n eventName: string,\n resultSelector: (value: T, ...args: any[]) => R\n): Observable<R>;\n\n/**\n * Creates an Observable that emits events of a specific type coming from the\n * given event target.\n *\n * <span class=\"informal\">Creates an Observable from DOM events, or Node.js\n * EventEmitter events or others.</span>\n *\n * \n *\n * `fromEvent` accepts as a first argument event target, which is an object with methods\n * for registering event handler functions. As a second argument it takes string that indicates\n * type of event we want to listen for. `fromEvent` supports selected types of event targets,\n * which are described in detail below. If your event target does not match any of the ones listed,\n * you should use {@link fromEventPattern}, which can be used on arbitrary APIs.\n * When it comes to APIs supported by `fromEvent`, their methods for adding and removing event\n * handler functions have different names, but they all accept a string describing event type\n * and function itself, which will be called whenever said event happens.\n *\n * Every time resulting Observable is subscribed, event handler function will be registered\n * to event target on given event type. When that event fires, value\n * passed as a first argument to registered function will be emitted by output Observable.\n * When Observable is unsubscribed, function will be unregistered from event target.\n *\n * Note that if event target calls registered function with more than one argument, second\n * and following arguments will not appear in resulting stream. In order to get access to them,\n * you can pass to `fromEvent` optional project function, which will be called with all arguments\n * passed to event handler. Output Observable will then emit value returned by project function,\n * instead of the usual value.\n *\n * Remember that event targets listed below are checked via duck typing. It means that\n * no matter what kind of object you have and no matter what environment you work in,\n * you can safely use `fromEvent` on that object if it exposes described methods (provided\n * of course they behave as was described above). So for example if Node.js library exposes\n * event target which has the same method names as DOM EventTarget, `fromEvent` is still\n * a good choice.\n *\n * If the API you use is more callback then event handler oriented (subscribed\n * callback function fires only once and thus there is no need to manually\n * unregister it), you should use {@link bindCallback} or {@link bindNodeCallback}\n * instead.\n *\n * `fromEvent` supports following types of event targets:\n *\n * **DOM EventTarget**\n *\n * This is an object with `addEventListener` and `removeEventListener` methods.\n *\n * In the browser, `addEventListener` accepts - apart from event type string and event\n * handler function arguments - optional third parameter, which is either an object or boolean,\n * both used for additional configuration how and when passed function will be called. When\n * `fromEvent` is used with event target of that type, you can provide this values\n * as third parameter as well.\n *\n * **Node.js EventEmitter**\n *\n * An object with `addListener` and `removeListener` methods.\n *\n * **JQuery-style event target**\n *\n * An object with `on` and `off` methods\n *\n * **DOM NodeList**\n *\n * List of DOM Nodes, returned for example by `document.querySelectorAll` or `Node.childNodes`.\n *\n * Although this collection is not event target in itself, `fromEvent` will iterate over all Nodes\n * it contains and install event handler function in every of them. When returned Observable\n * is unsubscribed, function will be removed from all Nodes.\n *\n * **DOM HtmlCollection**\n *\n * Just as in case of NodeList it is a collection of DOM nodes. Here as well event handler function is\n * installed and removed in each of elements.\n *\n *\n * ## Examples\n *\n * Emit clicks happening on the DOM document\n *\n * ```ts\n * import { fromEvent } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * clicks.subscribe(x => console.log(x));\n *\n * // Results in:\n * // MouseEvent object logged to console every time a click\n * // occurs on the document.\n * ```\n *\n * Use `addEventListener` with capture option\n *\n * ```ts\n * import { fromEvent } from 'rxjs';\n *\n * const div = document.createElement('div');\n * div.style.cssText = 'width: 200px; height: 200px; background: #09c;';\n * document.body.appendChild(div);\n *\n * // note optional configuration parameter which will be passed to addEventListener\n * const clicksInDocument = fromEvent(document, 'click', { capture: true });\n * const clicksInDiv = fromEvent(div, 'click');\n *\n * clicksInDocument.subscribe(() => console.log('document'));\n * clicksInDiv.subscribe(() => console.log('div'));\n *\n * // By default events bubble UP in DOM tree, so normally\n * // when we would click on div in document\n * // \"div\" would be logged first and then \"document\".\n * // Since we specified optional `capture` option, document\n * // will catch event when it goes DOWN DOM tree, so console\n * // will log \"document\" and then \"div\".\n * ```\n *\n * @see {@link bindCallback}\n * @see {@link bindNodeCallback}\n * @see {@link fromEventPattern}\n *\n * @param {FromEventTarget<T>} target The DOM EventTarget, Node.js\n * EventEmitter, JQuery-like event target, NodeList or HTMLCollection to attach the event handler to.\n * @param {string} eventName The event name of interest, being emitted by the\n * `target`.\n * @param {EventListenerOptions} [options] Options to pass through to addEventListener\n * @return {Observable<T>}\n */\nexport function fromEvent<T>(\n target: any,\n eventName: string,\n options?: EventListenerOptions | ((...args: any[]) => T),\n resultSelector?: (...args: any[]) => T\n): Observable<T> {\n if (isFunction(options)) {\n resultSelector = options;\n options = undefined;\n }\n if (resultSelector) {\n return fromEvent<T>(target, eventName, options as EventListenerOptions).pipe(mapOneOrManyArgs(resultSelector));\n }\n\n // Figure out our add and remove methods. In order to do this,\n // we are going to analyze the target in a preferred order, if\n // the target matches a given signature, we take the two \"add\" and \"remove\"\n // method names and apply them to a map to create opposite versions of the\n // same function. This is because they all operate in duplicate pairs,\n // `addListener(name, handler)`, `removeListener(name, handler)`, for example.\n // The call only differs by method name, as to whether or not you're adding or removing.\n const [add, remove] =\n // If it is an EventTarget, we need to use a slightly different method than the other two patterns.\n isEventTarget(target)\n ? eventTargetMethods.map((methodName) => (handler: any) => target[methodName](eventName, handler, options as EventListenerOptions))\n : // In all other cases, the call pattern is identical with the exception of the method names.\n isNodeStyleEventEmitter(target)\n ? nodeEventEmitterMethods.map(toCommonHandlerRegistry(target, eventName))\n : isJQueryStyleEventEmitter(target)\n ? jqueryMethods.map(toCommonHandlerRegistry(target, eventName))\n : [];\n\n // If add is falsy, it's because we didn't match a pattern above.\n // Check to see if it is an ArrayLike, because if it is, we want to\n // try to apply fromEvent to all of it's items. We do this check last,\n // because there are may be some types that are both ArrayLike *and* implement\n // event registry points, and we'd rather delegate to that when possible.\n if (!add) {\n if (isArrayLike(target)) {\n return mergeMap((subTarget: any) => fromEvent(subTarget, eventName, options as EventListenerOptions))(\n innerFrom(target)\n ) as Observable<T>;\n }\n }\n\n // If add is falsy and we made it here, it's because we didn't\n // match any valid target objects above.\n if (!add) {\n throw new TypeError('Invalid event target');\n }\n\n return new Observable<T>((subscriber) => {\n // The handler we are going to register. Forwards the event object, by itself, or\n // an array of arguments to the event handler, if there is more than one argument,\n // to the consumer.\n const handler = (...args: any[]) => subscriber.next(1 < args.length ? args : args[0]);\n // Do the work of adding the handler to the target.\n add(handler);\n // When we finalize, we want to remove the handler and free up memory.\n return () => remove!(handler);\n });\n}\n\n/**\n * Used to create `add` and `remove` functions to register and unregister event handlers\n * from a target in the most common handler pattern, where there are only two arguments.\n * (e.g. `on(name, fn)`, `off(name, fn)`, `addListener(name, fn)`, or `removeListener(name, fn)`)\n * @param target The target we're calling methods on\n * @param eventName The event name for the event we're creating register or unregister functions for\n */\nfunction toCommonHandlerRegistry(target: any, eventName: string) {\n return (methodName: string) => (handler: any) => target[methodName](eventName, handler);\n}\n\n/**\n * Checks to see if the target implements the required node-style EventEmitter methods\n * for adding and removing event handlers.\n * @param target the object to check\n */\nfunction isNodeStyleEventEmitter(target: any): target is NodeStyleEventEmitter {\n return isFunction(target.addListener) && isFunction(target.removeListener);\n}\n\n/**\n * Checks to see if the target implements the required jQuery-style EventEmitter methods\n * for adding and removing event handlers.\n * @param target the object to check\n */\nfunction isJQueryStyleEventEmitter(target: any): target is JQueryStyleEventEmitter<any, any> {\n return isFunction(target.on) && isFunction(target.off);\n}\n\n/**\n * Checks to see if the target implements the required EventTarget methods\n * for adding and removing event handlers.\n * @param target the object to check\n */\nfunction isEventTarget(target: any): target is HasEventTargetAddRemove<any> {\n return isFunction(target.addEventListener) && isFunction(target.removeEventListener);\n}\n", "import { Observable } from '../Observable';\nimport { isFunction } from '../util/isFunction';\nimport { NodeEventHandler } from './fromEvent';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\n\n/* tslint:disable:max-line-length */\nexport function fromEventPattern<T>(\n addHandler: (handler: NodeEventHandler) => any,\n removeHandler?: (handler: NodeEventHandler, signal?: any) => void\n): Observable<T>;\nexport function fromEventPattern<T>(\n addHandler: (handler: NodeEventHandler) => any,\n removeHandler?: (handler: NodeEventHandler, signal?: any) => void,\n resultSelector?: (...args: any[]) => T\n): Observable<T>;\n/* tslint:enable:max-line-length */\n\n/**\n * Creates an Observable from an arbitrary API for registering event handlers.\n *\n * <span class=\"informal\">When that method for adding event handler was something {@link fromEvent}\n * was not prepared for.</span>\n *\n * \n *\n * `fromEventPattern` allows you to convert into an Observable any API that supports registering handler functions\n * for events. It is similar to {@link fromEvent}, but far\n * more flexible. In fact, all use cases of {@link fromEvent} could be easily handled by\n * `fromEventPattern` (although in slightly more verbose way).\n *\n * This operator accepts as a first argument an `addHandler` function, which will be injected with\n * handler parameter. That handler is actually an event handler function that you now can pass\n * to API expecting it. `addHandler` will be called whenever Observable\n * returned by the operator is subscribed, so registering handler in API will not\n * necessarily happen when `fromEventPattern` is called.\n *\n * After registration, every time an event that we listen to happens,\n * Observable returned by `fromEventPattern` will emit value that event handler\n * function was called with. Note that if event handler was called with more\n * than one argument, second and following arguments will not appear in the Observable.\n *\n * If API you are using allows to unregister event handlers as well, you can pass to `fromEventPattern`\n * another function - `removeHandler` - as a second parameter. It will be injected\n * with the same handler function as before, which now you can use to unregister\n * it from the API. `removeHandler` will be called when consumer of resulting Observable\n * unsubscribes from it.\n *\n * In some APIs unregistering is actually handled differently. Method registering an event handler\n * returns some kind of token, which is later used to identify which function should\n * be unregistered or it itself has method that unregisters event handler.\n * If that is the case with your API, make sure token returned\n * by registering method is returned by `addHandler`. Then it will be passed\n * as a second argument to `removeHandler`, where you will be able to use it.\n *\n * If you need access to all event handler parameters (not only the first one),\n * or you need to transform them in any way, you can call `fromEventPattern` with optional\n * third parameter - project function which will accept all arguments passed to\n * event handler when it is called. Whatever is returned from project function will appear on\n * resulting stream instead of usual event handlers first argument. This means\n * that default project can be thought of as function that takes its first parameter\n * and ignores the rest.\n *\n * ## Examples\n *\n * Emits clicks happening on the DOM document\n *\n * ```ts\n * import { fromEventPattern } from 'rxjs';\n *\n * function addClickHandler(handler) {\n * document.addEventListener('click', handler);\n * }\n *\n * function removeClickHandler(handler) {\n * document.removeEventListener('click', handler);\n * }\n *\n * const clicks = fromEventPattern(\n * addClickHandler,\n * removeClickHandler\n * );\n * clicks.subscribe(x => console.log(x));\n *\n * // Whenever you click anywhere in the browser, DOM MouseEvent\n * // object will be logged.\n * ```\n *\n * Use with API that returns cancellation token\n *\n * ```ts\n * import { fromEventPattern } from 'rxjs';\n *\n * const token = someAPI.registerEventHandler(function() {});\n * someAPI.unregisterEventHandler(token); // this APIs cancellation method accepts\n * // not handler itself, but special token.\n *\n * const someAPIObservable = fromEventPattern(\n * function(handler) { return someAPI.registerEventHandler(handler); }, // Note that we return the token here...\n * function(handler, token) { someAPI.unregisterEventHandler(token); } // ...to then use it here.\n * );\n * ```\n *\n * Use with project function\n *\n * ```ts\n * import { fromEventPattern } from 'rxjs';\n *\n * someAPI.registerEventHandler((eventType, eventMessage) => {\n * console.log(eventType, eventMessage); // Logs 'EVENT_TYPE' 'EVENT_MESSAGE' to console.\n * });\n *\n * const someAPIObservable = fromEventPattern(\n * handler => someAPI.registerEventHandler(handler),\n * handler => someAPI.unregisterEventHandler(handler)\n * (eventType, eventMessage) => eventType + ' --- ' + eventMessage // without that function only 'EVENT_TYPE'\n * ); // would be emitted by the Observable\n *\n * someAPIObservable.subscribe(value => console.log(value));\n *\n * // Logs:\n * // 'EVENT_TYPE --- EVENT_MESSAGE'\n * ```\n *\n * @see {@link fromEvent}\n * @see {@link bindCallback}\n * @see {@link bindNodeCallback}\n *\n * @param {function(handler: Function): any} addHandler A function that takes\n * a `handler` function as argument and attaches it somehow to the actual\n * source of events.\n * @param {function(handler: Function, token?: any): void} [removeHandler] A function that\n * takes a `handler` function as an argument and removes it from the event source. If `addHandler`\n * returns some kind of token, `removeHandler` function will have it as a second parameter.\n * @param {function(...args: any): T} [project] A function to\n * transform results. It takes the arguments from the event handler and\n * should return a single value.\n * @return {Observable<T>} Observable which, when an event happens, emits first parameter\n * passed to registered event handler. Alternatively it emits whatever project function returns\n * at that moment.\n */\nexport function fromEventPattern<T>(\n addHandler: (handler: NodeEventHandler) => any,\n removeHandler?: (handler: NodeEventHandler, signal?: any) => void,\n resultSelector?: (...args: any[]) => T\n): Observable<T | T[]> {\n if (resultSelector) {\n return fromEventPattern<T>(addHandler, removeHandler).pipe(mapOneOrManyArgs(resultSelector));\n }\n\n return new Observable<T | T[]>((subscriber) => {\n const handler = (...e: T[]) => subscriber.next(e.length === 1 ? e[0] : e);\n const retValue = addHandler(handler);\n return isFunction(removeHandler) ? () => removeHandler(handler, retValue) : undefined;\n });\n}\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\nimport { async as asyncScheduler } from '../scheduler/async';\nimport { isScheduler } from '../util/isScheduler';\nimport { isValidDate } from '../util/isDate';\n\n/**\n * Creates an observable that will wait for a specified time period, or exact date, before\n * emitting the number 0.\n *\n * <span class=\"informal\">Used to emit a notification after a delay.</span>\n *\n * This observable is useful for creating delays in code, or racing against other values\n * for ad-hoc timeouts.\n *\n * The `delay` is specified by default in milliseconds, however providing a custom scheduler could\n * create a different behavior.\n *\n * ## Examples\n *\n * Wait 3 seconds and start another observable\n *\n * You might want to use `timer` to delay subscription to an\n * observable by a set amount of time. Here we use a timer with\n * {@link concatMapTo} or {@link concatMap} in order to wait\n * a few seconds and start a subscription to a source.\n *\n * ```ts\n * import { of, timer, concatMap } from 'rxjs';\n *\n * // This could be any observable\n * const source = of(1, 2, 3);\n *\n * timer(3000)\n * .pipe(concatMap(() => source))\n * .subscribe(console.log);\n * ```\n *\n * Take all values until the start of the next minute\n *\n * Using a `Date` as the trigger for the first emission, you can\n * do things like wait until midnight to fire an event, or in this case,\n * wait until a new minute starts (chosen so the example wouldn't take\n * too long to run) in order to stop watching a stream. Leveraging\n * {@link takeUntil}.\n *\n * ```ts\n * import { interval, takeUntil, timer } from 'rxjs';\n *\n * // Build a Date object that marks the\n * // next minute.\n * const currentDate = new Date();\n * const startOfNextMinute = new Date(\n * currentDate.getFullYear(),\n * currentDate.getMonth(),\n * currentDate.getDate(),\n * currentDate.getHours(),\n * currentDate.getMinutes() + 1\n * );\n *\n * // This could be any observable stream\n * const source = interval(1000);\n *\n * const result = source.pipe(\n * takeUntil(timer(startOfNextMinute))\n * );\n *\n * result.subscribe(console.log);\n * ```\n *\n * ### Known Limitations\n *\n * - The {@link asyncScheduler} uses `setTimeout` which has limitations for how far in the future it can be scheduled.\n *\n * - If a `scheduler` is provided that returns a timestamp other than an epoch from `now()`, and\n * a `Date` object is passed to the `dueTime` argument, the calculation for when the first emission\n * should occur will be incorrect. In this case, it would be best to do your own calculations\n * ahead of time, and pass a `number` in as the `dueTime`.\n *\n * @param due If a `number`, the amount of time in milliseconds to wait before emitting.\n * If a `Date`, the exact time at which to emit.\n * @param scheduler The scheduler to use to schedule the delay. Defaults to {@link asyncScheduler}.\n */\nexport function timer(due: number | Date, scheduler?: SchedulerLike): Observable<0>;\n\n/**\n * Creates an observable that starts an interval after a specified delay, emitting incrementing numbers -- starting at `0` --\n * on each interval after words.\n *\n * The `delay` and `intervalDuration` are specified by default in milliseconds, however providing a custom scheduler could\n * create a different behavior.\n *\n * ## Example\n *\n * ### Start an interval that starts right away\n *\n * Since {@link interval} waits for the passed delay before starting,\n * sometimes that's not ideal. You may want to start an interval immediately.\n * `timer` works well for this. Here we have both side-by-side so you can\n * see them in comparison.\n *\n * Note that this observable will never complete.\n *\n * ```ts\n * import { timer, interval } from 'rxjs';\n *\n * timer(0, 1000).subscribe(n => console.log('timer', n));\n * interval(1000).subscribe(n => console.log('interval', n));\n * ```\n *\n * ### Known Limitations\n *\n * - The {@link asyncScheduler} uses `setTimeout` which has limitations for how far in the future it can be scheduled.\n *\n * - If a `scheduler` is provided that returns a timestamp other than an epoch from `now()`, and\n * a `Date` object is passed to the `dueTime` argument, the calculation for when the first emission\n * should occur will be incorrect. In this case, it would be best to do your own calculations\n * ahead of time, and pass a `number` in as the `startDue`.\n * @param startDue If a `number`, is the time to wait before starting the interval.\n * If a `Date`, is the exact time at which to start the interval.\n * @param intervalDuration The delay between each value emitted in the interval. Passing a\n * negative number here will result in immediate completion after the first value is emitted, as though\n * no `intervalDuration` was passed at all.\n * @param scheduler The scheduler to use to schedule the delay. Defaults to {@link asyncScheduler}.\n */\nexport function timer(startDue: number | Date, intervalDuration: number, scheduler?: SchedulerLike): Observable<number>;\n\n/**\n * @deprecated The signature allowing `undefined` to be passed for `intervalDuration` will be removed in v8. Use the `timer(dueTime, scheduler?)` signature instead.\n */\nexport function timer(dueTime: number | Date, unused: undefined, scheduler?: SchedulerLike): Observable<0>;\n\nexport function timer(\n dueTime: number | Date = 0,\n intervalOrScheduler?: number | SchedulerLike,\n scheduler: SchedulerLike = asyncScheduler\n): Observable<number> {\n // Since negative intervalDuration is treated as though no\n // interval was specified at all, we start with a negative number.\n let intervalDuration = -1;\n\n if (intervalOrScheduler != null) {\n // If we have a second argument, and it's a scheduler,\n // override the scheduler we had defaulted. Otherwise,\n // it must be an interval.\n if (isScheduler(intervalOrScheduler)) {\n scheduler = intervalOrScheduler;\n } else {\n // Note that this *could* be negative, in which case\n // it's like not passing an intervalDuration at all.\n intervalDuration = intervalOrScheduler;\n }\n }\n\n return new Observable((subscriber) => {\n // If a valid date is passed, calculate how long to wait before\n // executing the first value... otherwise, if it's a number just schedule\n // that many milliseconds (or scheduler-specified unit size) in the future.\n let due = isValidDate(dueTime) ? +dueTime - scheduler!.now() : dueTime;\n\n if (due < 0) {\n // Ensure we don't schedule in the future.\n due = 0;\n }\n\n // The incrementing value we emit.\n let n = 0;\n\n // Start the timer.\n return scheduler.schedule(function () {\n if (!subscriber.closed) {\n // Emit the next value and increment.\n subscriber.next(n++);\n\n if (0 <= intervalDuration) {\n // If we have a interval after the initial timer,\n // reschedule with the period.\n this.schedule(undefined, intervalDuration);\n } else {\n // We didn't have an interval. So just complete.\n subscriber.complete();\n }\n }\n }, due);\n });\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInput, ObservableInputTuple, SchedulerLike } from '../types';\nimport { mergeAll } from '../operators/mergeAll';\nimport { innerFrom } from './innerFrom';\nimport { EMPTY } from './empty';\nimport { popNumber, popScheduler } from '../util/args';\nimport { from } from './from';\n\nexport function merge<A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): Observable<A[number]>;\nexport function merge<A extends readonly unknown[]>(...sourcesAndConcurrency: [...ObservableInputTuple<A>, number?]): Observable<A[number]>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `mergeAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function merge<A extends readonly unknown[]>(\n ...sourcesAndScheduler: [...ObservableInputTuple<A>, SchedulerLike?]\n): Observable<A[number]>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `mergeAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function merge<A extends readonly unknown[]>(\n ...sourcesAndConcurrencyAndScheduler: [...ObservableInputTuple<A>, number?, SchedulerLike?]\n): Observable<A[number]>;\n\n/**\n * Creates an output Observable which concurrently emits all values from every\n * given input Observable.\n *\n * <span class=\"informal\">Flattens multiple Observables together by blending\n * their values into one Observable.</span>\n *\n * \n *\n * `merge` subscribes to each given input Observable (as arguments), and simply\n * forwards (without doing any transformation) all the values from all the input\n * Observables to the output Observable. The output Observable only completes\n * once all input Observables have completed. Any error delivered by an input\n * Observable will be immediately emitted on the output Observable.\n *\n * ## Examples\n *\n * Merge together two Observables: 1s interval and clicks\n *\n * ```ts\n * import { merge, fromEvent, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const timer = interval(1000);\n * const clicksOrTimer = merge(clicks, timer);\n * clicksOrTimer.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // timer will emit ascending values, one every second(1000ms) to console\n * // clicks logs MouseEvents to console every time the \"document\" is clicked\n * // Since the two streams are merged you see these happening\n * // as they occur.\n * ```\n *\n * Merge together 3 Observables, but run only 2 concurrently\n *\n * ```ts\n * import { interval, take, merge } from 'rxjs';\n *\n * const timer1 = interval(1000).pipe(take(10));\n * const timer2 = interval(2000).pipe(take(6));\n * const timer3 = interval(500).pipe(take(10));\n *\n * const concurrent = 2; // the argument\n * const merged = merge(timer1, timer2, timer3, concurrent);\n * merged.subscribe(x => console.log(x));\n *\n * // Results in the following:\n * // - First timer1 and timer2 will run concurrently\n * // - timer1 will emit a value every 1000ms for 10 iterations\n * // - timer2 will emit a value every 2000ms for 6 iterations\n * // - after timer1 hits its max iteration, timer2 will\n * // continue, and timer3 will start to run concurrently with timer2\n * // - when timer2 hits its max iteration it terminates, and\n * // timer3 will continue to emit a value every 500ms until it is complete\n * ```\n *\n * @see {@link mergeAll}\n * @see {@link mergeMap}\n * @see {@link mergeMapTo}\n * @see {@link mergeScan}\n *\n * @param {...ObservableInput} observables Input Observables to merge together.\n * @param {number} [concurrent=Infinity] Maximum number of input\n * Observables being subscribed to concurrently.\n * @param {SchedulerLike} [scheduler=null] The {@link SchedulerLike} to use for managing\n * concurrency of input Observables.\n * @return {Observable} an Observable that emits items that are the result of\n * every input Observable.\n */\nexport function merge(...args: (ObservableInput<unknown> | number | SchedulerLike)[]): Observable<unknown> {\n const scheduler = popScheduler(args);\n const concurrent = popNumber(args, Infinity);\n const sources = args as ObservableInput<unknown>[];\n return !sources.length\n ? // No source provided\n EMPTY\n : sources.length === 1\n ? // One source? Just return it.\n innerFrom(sources[0])\n : // Merge all sources\n mergeAll(concurrent)(from(sources, scheduler));\n}\n", "import { Observable } from '../Observable';\nimport { noop } from '../util/noop';\n\n/**\n * An Observable that emits no items to the Observer and never completes.\n *\n * \n *\n * A simple Observable that emits neither values nor errors nor the completion\n * notification. It can be used for testing purposes or for composing with other\n * Observables. Please note that by never emitting a complete notification, this\n * Observable keeps the subscription from being disposed automatically.\n * Subscriptions need to be manually disposed.\n *\n * ## Example\n *\n * Emit the number 7, then never emit anything else (not even complete)\n *\n * ```ts\n * import { NEVER, startWith } from 'rxjs';\n *\n * const info = () => console.log('Will not be called');\n *\n * const result = NEVER.pipe(startWith(7));\n * result.subscribe({\n * next: x => console.log(x),\n * error: info,\n * complete: info\n * });\n * ```\n *\n * @see {@link Observable}\n * @see {@link EMPTY}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const NEVER = new Observable<never>(noop);\n\n/**\n * @deprecated Replaced with the {@link NEVER} constant. Will be removed in v8.\n */\nexport function never() {\n return NEVER;\n}\n", "const { isArray } = Array;\n\n/**\n * Used in operators and functions that accept either a list of arguments, or an array of arguments\n * as a single argument.\n */\nexport function argsOrArgArray<T>(args: (T | T[])[]): T[] {\n return args.length === 1 && isArray(args[0]) ? args[0] : (args as T[]);\n}\n", "import { OperatorFunction, MonoTypeOperatorFunction, TruthyTypesOf } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/** @deprecated Use a closure instead of a `thisArg`. Signatures accepting a `thisArg` will be removed in v8. */\nexport function filter<T, S extends T, A>(predicate: (this: A, value: T, index: number) => value is S, thisArg: A): OperatorFunction<T, S>;\nexport function filter<T, S extends T>(predicate: (value: T, index: number) => value is S): OperatorFunction<T, S>;\nexport function filter<T>(predicate: BooleanConstructor): OperatorFunction<T, TruthyTypesOf<T>>;\n/** @deprecated Use a closure instead of a `thisArg`. Signatures accepting a `thisArg` will be removed in v8. */\nexport function filter<T, A>(predicate: (this: A, value: T, index: number) => boolean, thisArg: A): MonoTypeOperatorFunction<T>;\nexport function filter<T>(predicate: (value: T, index: number) => boolean): MonoTypeOperatorFunction<T>;\n\n/**\n * Filter items emitted by the source Observable by only emitting those that\n * satisfy a specified predicate.\n *\n * <span class=\"informal\">Like\n * [Array.prototype.filter()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter),\n * it only emits a value from the source if it passes a criterion function.</span>\n *\n * \n *\n * Similar to the well-known `Array.prototype.filter` method, this operator\n * takes values from the source Observable, passes them through a `predicate`\n * function and only emits those values that yielded `true`.\n *\n * ## Example\n *\n * Emit only click events whose target was a DIV element\n *\n * ```ts\n * import { fromEvent, filter } from 'rxjs';\n *\n * const div = document.createElement('div');\n * div.style.cssText = 'width: 200px; height: 200px; background: #09c;';\n * document.body.appendChild(div);\n *\n * const clicks = fromEvent(document, 'click');\n * const clicksOnDivs = clicks.pipe(filter(ev => (<HTMLElement>ev.target).tagName === 'DIV'));\n * clicksOnDivs.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link distinct}\n * @see {@link distinctUntilChanged}\n * @see {@link distinctUntilKeyChanged}\n * @see {@link ignoreElements}\n * @see {@link partition}\n * @see {@link skip}\n *\n * @param predicate A function that\n * evaluates each value emitted by the source Observable. If it returns `true`,\n * the value is emitted, if `false` the value is not passed to the output\n * Observable. The `index` parameter is the number `i` for the i-th source\n * emission that has happened since the subscription, starting from the number\n * `0`.\n * @param thisArg An optional argument to determine the value of `this`\n * in the `predicate` function.\n * @return A function that returns an Observable that emits items from the\n * source Observable that satisfy the specified `predicate`.\n */\nexport function filter<T>(predicate: (value: T, index: number) => boolean, thisArg?: any): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n // An index passed to our predicate function on each call.\n let index = 0;\n\n // Subscribe to the source, all errors and completions are\n // forwarded to the consumer.\n source.subscribe(\n // Call the predicate with the appropriate `this` context,\n // if the predicate returns `true`, then send the value\n // to the consumer.\n createOperatorSubscriber(subscriber, (value) => predicate.call(thisArg, value, index++) && subscriber.next(value))\n );\n });\n}\n", "import { Observable } from '../Observable';\nimport { ObservableInputTuple } from '../types';\nimport { innerFrom } from './innerFrom';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { EMPTY } from './empty';\nimport { createOperatorSubscriber } from '../operators/OperatorSubscriber';\nimport { popResultSelector } from '../util/args';\n\nexport function zip<A extends readonly unknown[]>(sources: [...ObservableInputTuple<A>]): Observable<A>;\nexport function zip<A extends readonly unknown[], R>(\n sources: [...ObservableInputTuple<A>],\n resultSelector: (...values: A) => R\n): Observable<R>;\nexport function zip<A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): Observable<A>;\nexport function zip<A extends readonly unknown[], R>(\n ...sourcesAndResultSelector: [...ObservableInputTuple<A>, (...values: A) => R]\n): Observable<R>;\n\n/**\n * Combines multiple Observables to create an Observable whose values are calculated from the values, in order, of each\n * of its input Observables.\n *\n * If the last parameter is a function, this function is used to compute the created value from the input values.\n * Otherwise, an array of the input values is returned.\n *\n * ## Example\n *\n * Combine age and name from different sources\n *\n * ```ts\n * import { of, zip, map } from 'rxjs';\n *\n * const age$ = of(27, 25, 29);\n * const name$ = of('Foo', 'Bar', 'Beer');\n * const isDev$ = of(true, true, false);\n *\n * zip(age$, name$, isDev$).pipe(\n * map(([age, name, isDev]) => ({ age, name, isDev }))\n * )\n * .subscribe(x => console.log(x));\n *\n * // Outputs\n * // { age: 27, name: 'Foo', isDev: true }\n * // { age: 25, name: 'Bar', isDev: true }\n * // { age: 29, name: 'Beer', isDev: false }\n * ```\n *\n * @param sources\n * @return {Observable<R>}\n */\nexport function zip(...args: unknown[]): Observable<unknown> {\n const resultSelector = popResultSelector(args);\n\n const sources = argsOrArgArray(args) as Observable<unknown>[];\n\n return sources.length\n ? new Observable<unknown[]>((subscriber) => {\n // A collection of buffers of values from each source.\n // Keyed by the same index with which the sources were passed in.\n let buffers: unknown[][] = sources.map(() => []);\n\n // An array of flags of whether or not the sources have completed.\n // This is used to check to see if we should complete the result.\n // Keyed by the same index with which the sources were passed in.\n let completed = sources.map(() => false);\n\n // When everything is done, release the arrays above.\n subscriber.add(() => {\n buffers = completed = null!;\n });\n\n // Loop over our sources and subscribe to each one. The index `i` is\n // especially important here, because we use it in closures below to\n // access the related buffers and completion properties\n for (let sourceIndex = 0; !subscriber.closed && sourceIndex < sources.length; sourceIndex++) {\n innerFrom(sources[sourceIndex]).subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n buffers[sourceIndex].push(value);\n // if every buffer has at least one value in it, then we\n // can shift out the oldest value from each buffer and emit\n // them as an array.\n if (buffers.every((buffer) => buffer.length)) {\n const result: any = buffers.map((buffer) => buffer.shift()!);\n // Emit the array. If theres' a result selector, use that.\n subscriber.next(resultSelector ? resultSelector(...result) : result);\n // If any one of the sources is both complete and has an empty buffer\n // then we complete the result. This is because we cannot possibly have\n // any more values to zip together.\n if (buffers.some((buffer, i) => !buffer.length && completed[i])) {\n subscriber.complete();\n }\n }\n },\n () => {\n // This source completed. Mark it as complete so we can check it later\n // if we have to.\n completed[sourceIndex] = true;\n // But, if this complete source has nothing in its buffer, then we\n // can complete the result, because we can't possibly have any more\n // values from this to zip together with the other values.\n !buffers[sourceIndex].length && subscriber.complete();\n }\n )\n );\n }\n\n // When everything is done, release the arrays above.\n return () => {\n buffers = completed = null!;\n };\n })\n : EMPTY;\n}\n", "import { Subscriber } from '../Subscriber';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\n\nimport { operate } from '../util/lift';\nimport { innerFrom } from '../observable/innerFrom';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Ignores source values for a duration determined by another Observable, then\n * emits the most recent value from the source Observable, then repeats this\n * process.\n *\n * <span class=\"informal\">It's like {@link auditTime}, but the silencing\n * duration is determined by a second Observable.</span>\n *\n * \n *\n * `audit` is similar to `throttle`, but emits the last value from the silenced\n * time window, instead of the first value. `audit` emits the most recent value\n * from the source Observable on the output Observable as soon as its internal\n * timer becomes disabled, and ignores source values while the timer is enabled.\n * Initially, the timer is disabled. As soon as the first source value arrives,\n * the timer is enabled by calling the `durationSelector` function with the\n * source value, which returns the \"duration\" Observable. When the duration\n * Observable emits a value, the timer is disabled, then the most\n * recent source value is emitted on the output Observable, and this process\n * repeats for the next source value.\n *\n * ## Example\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, audit, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(audit(ev => interval(1000)));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link auditTime}\n * @see {@link debounce}\n * @see {@link delayWhen}\n * @see {@link sample}\n * @see {@link throttle}\n *\n * @param durationSelector A function\n * that receives a value from the source Observable, for computing the silencing\n * duration, returned as an Observable or a Promise.\n * @return A function that returns an Observable that performs rate-limiting of\n * emissions from the source Observable.\n */\nexport function audit<T>(durationSelector: (value: T) => ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let hasValue = false;\n let lastValue: T | null = null;\n let durationSubscriber: Subscriber<any> | null = null;\n let isComplete = false;\n\n const endDuration = () => {\n durationSubscriber?.unsubscribe();\n durationSubscriber = null;\n if (hasValue) {\n hasValue = false;\n const value = lastValue!;\n lastValue = null;\n subscriber.next(value);\n }\n isComplete && subscriber.complete();\n };\n\n const cleanupDuration = () => {\n durationSubscriber = null;\n isComplete && subscriber.complete();\n };\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n hasValue = true;\n lastValue = value;\n if (!durationSubscriber) {\n innerFrom(durationSelector(value)).subscribe(\n (durationSubscriber = createOperatorSubscriber(subscriber, endDuration, cleanupDuration))\n );\n }\n },\n () => {\n isComplete = true;\n (!hasValue || !durationSubscriber || durationSubscriber.closed) && subscriber.complete();\n }\n )\n );\n });\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { audit } from './audit';\nimport { timer } from '../observable/timer';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\n\n/**\n * Ignores source values for `duration` milliseconds, then emits the most recent\n * value from the source Observable, then repeats this process.\n *\n * <span class=\"informal\">When it sees a source value, it ignores that plus\n * the next ones for `duration` milliseconds, and then it emits the most recent\n * value from the source.</span>\n *\n * \n *\n * `auditTime` is similar to `throttleTime`, but emits the last value from the\n * silenced time window, instead of the first value. `auditTime` emits the most\n * recent value from the source Observable on the output Observable as soon as\n * its internal timer becomes disabled, and ignores source values while the\n * timer is enabled. Initially, the timer is disabled. As soon as the first\n * source value arrives, the timer is enabled. After `duration` milliseconds (or\n * the time unit determined internally by the optional `scheduler`) has passed,\n * the timer is disabled, then the most recent source value is emitted on the\n * output Observable, and this process repeats for the next source value.\n * Optionally takes a {@link SchedulerLike} for managing timers.\n *\n * ## Example\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, auditTime } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(auditTime(1000));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link debounceTime}\n * @see {@link delay}\n * @see {@link sampleTime}\n * @see {@link throttleTime}\n *\n * @param {number} duration Time to wait before emitting the most recent source\n * value, measured in milliseconds or the time unit determined internally\n * by the optional `scheduler`.\n * @param {SchedulerLike} [scheduler=async] The {@link SchedulerLike} to use for\n * managing the timers that handle the rate-limiting behavior.\n * @return A function that returns an Observable that performs rate-limiting of\n * emissions from the source Observable.\n */\nexport function auditTime<T>(duration: number, scheduler: SchedulerLike = asyncScheduler): MonoTypeOperatorFunction<T> {\n return audit(() => timer(duration, scheduler));\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { arrRemove } from '../util/arrRemove';\n\n/**\n * Buffers the source Observable values until the size hits the maximum\n * `bufferSize` given.\n *\n * <span class=\"informal\">Collects values from the past as an array, and emits\n * that array only when its size reaches `bufferSize`.</span>\n *\n * \n *\n * Buffers a number of values from the source Observable by `bufferSize` then\n * emits the buffer and clears it, and starts a new buffer each\n * `startBufferEvery` values. If `startBufferEvery` is not provided or is\n * `null`, then new buffers are started immediately at the start of the source\n * and when each buffer closes and is emitted.\n *\n * ## Examples\n *\n * Emit the last two click events as an array\n *\n * ```ts\n * import { fromEvent, bufferCount } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const buffered = clicks.pipe(bufferCount(2));\n * buffered.subscribe(x => console.log(x));\n * ```\n *\n * On every click, emit the last two click events as an array\n *\n * ```ts\n * import { fromEvent, bufferCount } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const buffered = clicks.pipe(bufferCount(2, 1));\n * buffered.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link buffer}\n * @see {@link bufferTime}\n * @see {@link bufferToggle}\n * @see {@link bufferWhen}\n * @see {@link pairwise}\n * @see {@link windowCount}\n *\n * @param {number} bufferSize The maximum size of the buffer emitted.\n * @param {number} [startBufferEvery] Interval at which to start a new buffer.\n * For example if `startBufferEvery` is `2`, then a new buffer will be started\n * on every other value from the source. A new buffer is started at the\n * beginning of the source by default.\n * @return A function that returns an Observable of arrays of buffered values.\n */\nexport function bufferCount<T>(bufferSize: number, startBufferEvery: number | null = null): OperatorFunction<T, T[]> {\n // If no `startBufferEvery` value was supplied, then we're\n // opening and closing on the bufferSize itself.\n startBufferEvery = startBufferEvery ?? bufferSize;\n\n return operate((source, subscriber) => {\n let buffers: T[][] = [];\n let count = 0;\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n let toEmit: T[][] | null = null;\n\n // Check to see if we need to start a buffer.\n // This will start one at the first value, and then\n // a new one every N after that.\n if (count++ % startBufferEvery! === 0) {\n buffers.push([]);\n }\n\n // Push our value into our active buffers.\n for (const buffer of buffers) {\n buffer.push(value);\n // Check to see if we're over the bufferSize\n // if we are, record it so we can emit it later.\n // If we emitted it now and removed it, it would\n // mutate the `buffers` array while we're looping\n // over it.\n if (bufferSize <= buffer.length) {\n toEmit = toEmit ?? [];\n toEmit.push(buffer);\n }\n }\n\n if (toEmit) {\n // We have found some buffers that are over the\n // `bufferSize`. Emit them, and remove them from our\n // buffers list.\n for (const buffer of toEmit) {\n arrRemove(buffers, buffer);\n subscriber.next(buffer);\n }\n }\n },\n () => {\n // When the source completes, emit all of our\n // active buffers.\n for (const buffer of buffers) {\n subscriber.next(buffer);\n }\n subscriber.complete();\n },\n // Pass all errors through to consumer.\n undefined,\n () => {\n // Clean up our memory when we finalize\n buffers = null!;\n }\n )\n );\n });\n}\n", "import { Observable } from '../Observable';\n\nimport { ObservableInput, OperatorFunction, ObservedValueOf } from '../types';\nimport { Subscription } from '../Subscription';\nimport { innerFrom } from '../observable/innerFrom';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { operate } from '../util/lift';\n\n/* tslint:disable:max-line-length */\nexport function catchError<T, O extends ObservableInput<any>>(\n selector: (err: any, caught: Observable<T>) => O\n): OperatorFunction<T, T | ObservedValueOf<O>>;\n/* tslint:enable:max-line-length */\n\n/**\n * Catches errors on the observable to be handled by returning a new observable or throwing an error.\n *\n * <span class=\"informal\">\n * It only listens to the error channel and ignores notifications.\n * Handles errors from the source observable, and maps them to a new observable.\n * The error may also be rethrown, or a new error can be thrown to emit an error from the result.\n * </span>\n *\n * \n *\n * This operator handles errors, but forwards along all other events to the resulting observable.\n * If the source observable terminates with an error, it will map that error to a new observable,\n * subscribe to it, and forward all of its events to the resulting observable.\n *\n * ## Examples\n *\n * Continue with a different Observable when there's an error\n *\n * ```ts\n * import { of, map, catchError } from 'rxjs';\n *\n * of(1, 2, 3, 4, 5)\n * .pipe(\n * map(n => {\n * if (n === 4) {\n * throw 'four!';\n * }\n * return n;\n * }),\n * catchError(err => of('I', 'II', 'III', 'IV', 'V'))\n * )\n * .subscribe(x => console.log(x));\n * // 1, 2, 3, I, II, III, IV, V\n * ```\n *\n * Retry the caught source Observable again in case of error, similar to `retry()` operator\n *\n * ```ts\n * import { of, map, catchError, take } from 'rxjs';\n *\n * of(1, 2, 3, 4, 5)\n * .pipe(\n * map(n => {\n * if (n === 4) {\n * throw 'four!';\n * }\n * return n;\n * }),\n * catchError((err, caught) => caught),\n * take(30)\n * )\n * .subscribe(x => console.log(x));\n * // 1, 2, 3, 1, 2, 3, ...\n * ```\n *\n * Throw a new error when the source Observable throws an error\n *\n * ```ts\n * import { of, map, catchError } from 'rxjs';\n *\n * of(1, 2, 3, 4, 5)\n * .pipe(\n * map(n => {\n * if (n === 4) {\n * throw 'four!';\n * }\n * return n;\n * }),\n * catchError(err => {\n * throw 'error in source. Details: ' + err;\n * })\n * )\n * .subscribe({\n * next: x => console.log(x),\n * error: err => console.log(err)\n * });\n * // 1, 2, 3, error in source. Details: four!\n * ```\n *\n * @see {@link onErrorResumeNext}\n * @see {@link repeat}\n * @see {@link repeatWhen}\n * @see {@link retry }\n * @see {@link retryWhen}\n *\n * @param {function} selector a function that takes as arguments `err`, which is the error, and `caught`, which\n * is the source observable, in case you'd like to \"retry\" that observable by returning it again. Whatever observable\n * is returned by the `selector` will be used to continue the observable chain.\n * @return A function that returns an Observable that originates from either\n * the source or the Observable returned by the `selector` function.\n */\nexport function catchError<T, O extends ObservableInput<any>>(\n selector: (err: any, caught: Observable<T>) => O\n): OperatorFunction<T, T | ObservedValueOf<O>> {\n return operate((source, subscriber) => {\n let innerSub: Subscription | null = null;\n let syncUnsub = false;\n let handledResult: Observable<ObservedValueOf<O>>;\n\n innerSub = source.subscribe(\n createOperatorSubscriber(subscriber, undefined, undefined, (err) => {\n handledResult = innerFrom(selector(err, catchError(selector)(source)));\n if (innerSub) {\n innerSub.unsubscribe();\n innerSub = null;\n handledResult.subscribe(subscriber);\n } else {\n // We don't have an innerSub yet, that means the error was synchronous\n // because the subscribe call hasn't returned yet.\n syncUnsub = true;\n }\n })\n );\n\n if (syncUnsub) {\n // We have a synchronous error, we need to make sure to\n // finalize right away. This ensures that callbacks in the `finalize` operator are called\n // at the right time, and that finalization occurs at the expected\n // time between the source error and the subscription to the\n // next observable.\n innerSub.unsubscribe();\n innerSub = null;\n handledResult!.subscribe(subscriber);\n }\n });\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * A basic scan operation. This is used for `scan` and `reduce`.\n * @param accumulator The accumulator to use\n * @param seed The seed value for the state to accumulate\n * @param hasSeed Whether or not a seed was provided\n * @param emitOnNext Whether or not to emit the state on next\n * @param emitBeforeComplete Whether or not to emit the before completion\n */\n\nexport function scanInternals<V, A, S>(\n accumulator: (acc: V | A | S, value: V, index: number) => A,\n seed: S,\n hasSeed: boolean,\n emitOnNext: boolean,\n emitBeforeComplete?: undefined | true\n) {\n return (source: Observable<V>, subscriber: Subscriber<any>) => {\n // Whether or not we have state yet. This will only be\n // false before the first value arrives if we didn't get\n // a seed value.\n let hasState = hasSeed;\n // The state that we're tracking, starting with the seed,\n // if there is one, and then updated by the return value\n // from the accumulator on each emission.\n let state: any = seed;\n // An index to pass to the accumulator function.\n let index = 0;\n\n // Subscribe to our source. All errors and completions are passed through.\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // Always increment the index.\n const i = index++;\n // Set the state\n state = hasState\n ? // We already have state, so we can get the new state from the accumulator\n accumulator(state, value, i)\n : // We didn't have state yet, a seed value was not provided, so\n\n // we set the state to the first value, and mark that we have state now\n ((hasState = true), value);\n\n // Maybe send it to the consumer.\n emitOnNext && subscriber.next(state);\n },\n // If an onComplete was given, call it, otherwise\n // just pass through the complete notification to the consumer.\n emitBeforeComplete &&\n (() => {\n hasState && subscriber.next(state);\n subscriber.complete();\n })\n )\n );\n };\n}\n", "import { combineLatestInit } from '../observable/combineLatest';\nimport { ObservableInput, ObservableInputTuple, OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nimport { pipe } from '../util/pipe';\nimport { popResultSelector } from '../util/args';\n\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(\n sources: [...ObservableInputTuple<A>],\n project: (...values: [T, ...A]) => R\n): OperatorFunction<T, R>;\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(sources: [...ObservableInputTuple<A>]): OperatorFunction<T, [T, ...A]>;\n\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(\n ...sourcesAndProject: [...ObservableInputTuple<A>, (...values: [T, ...A]) => R]\n): OperatorFunction<T, R>;\n/** @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8. */\nexport function combineLatest<T, A extends readonly unknown[], R>(...sources: [...ObservableInputTuple<A>]): OperatorFunction<T, [T, ...A]>;\n\n/**\n * @deprecated Replaced with {@link combineLatestWith}. Will be removed in v8.\n */\nexport function combineLatest<T, R>(...args: (ObservableInput<any> | ((...values: any[]) => R))[]): OperatorFunction<T, unknown> {\n const resultSelector = popResultSelector(args);\n return resultSelector\n ? pipe(combineLatest(...(args as Array<ObservableInput<any>>)), mapOneOrManyArgs(resultSelector))\n : operate((source, subscriber) => {\n combineLatestInit([source, ...argsOrArgArray(args)])(subscriber);\n });\n}\n", "import { ObservableInputTuple, OperatorFunction, Cons } from '../types';\nimport { combineLatest } from './combineLatest';\n\n/**\n * Create an observable that combines the latest values from all passed observables and the source\n * into arrays and emits them.\n *\n * Returns an observable, that when subscribed to, will subscribe to the source observable and all\n * sources provided as arguments. Once all sources emit at least one value, all of the latest values\n * will be emitted as an array. After that, every time any source emits a value, all of the latest values\n * will be emitted as an array.\n *\n * This is a useful operator for eagerly calculating values based off of changed inputs.\n *\n * ## Example\n *\n * Simple concatenation of values from two inputs\n *\n * ```ts\n * import { fromEvent, combineLatestWith, map } from 'rxjs';\n *\n * // Setup: Add two inputs to the page\n * const input1 = document.createElement('input');\n * document.body.appendChild(input1);\n * const input2 = document.createElement('input');\n * document.body.appendChild(input2);\n *\n * // Get streams of changes\n * const input1Changes$ = fromEvent(input1, 'change');\n * const input2Changes$ = fromEvent(input2, 'change');\n *\n * // Combine the changes by adding them together\n * input1Changes$.pipe(\n * combineLatestWith(input2Changes$),\n * map(([e1, e2]) => (<HTMLInputElement>e1.target).value + ' - ' + (<HTMLInputElement>e2.target).value)\n * )\n * .subscribe(x => console.log(x));\n * ```\n *\n * @param otherSources the other sources to subscribe to.\n * @return A function that returns an Observable that emits the latest\n * emissions from both source and provided Observables.\n */\nexport function combineLatestWith<T, A extends readonly unknown[]>(\n ...otherSources: [...ObservableInputTuple<A>]\n): OperatorFunction<T, Cons<T, A>> {\n return combineLatest(...otherSources);\n}\n", "import { Subscriber } from '../Subscriber';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { noop } from '../util/noop';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\n\n/**\n * Emits a notification from the source Observable only after a particular time span\n * determined by another Observable has passed without another source emission.\n *\n * <span class=\"informal\">It's like {@link debounceTime}, but the time span of\n * emission silence is determined by a second Observable.</span>\n *\n * \n *\n * `debounce` delays notifications emitted by the source Observable, but drops previous\n * pending delayed emissions if a new notification arrives on the source Observable.\n * This operator keeps track of the most recent notification from the source\n * Observable, and spawns a duration Observable by calling the\n * `durationSelector` function. The notification is emitted only when the duration\n * Observable emits a next notification, and if no other notification was emitted on\n * the source Observable since the duration Observable was spawned. If a new\n * notification appears before the duration Observable emits, the previous notification will\n * not be emitted and a new duration is scheduled from `durationSelector` is scheduled.\n * If the completing event happens during the scheduled duration the last cached notification\n * is emitted before the completion event is forwarded to the output observable.\n * If the error event happens during the scheduled duration or after it only the error event is\n * forwarded to the output observable. The cache notification is not emitted in this case.\n *\n * Like {@link debounceTime}, this is a rate-limiting operator, and also a\n * delay-like operator since output emissions do not necessarily occur at the\n * same time as they did on the source Observable.\n *\n * ## Example\n *\n * Emit the most recent click after a burst of clicks\n *\n * ```ts\n * import { fromEvent, scan, debounce, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(\n * scan(i => ++i, 1),\n * debounce(i => interval(200 * i))\n * );\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link auditTime}\n * @see {@link debounceTime}\n * @see {@link delay}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link throttle}\n * @see {@link throttleTime}\n *\n * @param durationSelector A function\n * that receives a value from the source Observable, for computing the timeout\n * duration for each source value, returned as an Observable or a Promise.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by the specified duration Observable returned by\n * `durationSelector`, and may drop some values if they occur too frequently.\n */\nexport function debounce<T>(durationSelector: (value: T) => ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let hasValue = false;\n let lastValue: T | null = null;\n // The subscriber/subscription for the current debounce, if there is one.\n let durationSubscriber: Subscriber<any> | null = null;\n\n const emit = () => {\n // Unsubscribe any current debounce subscription we have,\n // we only cared about the first notification from it, and we\n // want to clean that subscription up as soon as possible.\n durationSubscriber?.unsubscribe();\n durationSubscriber = null;\n if (hasValue) {\n // We have a value! Free up memory first, then emit the value.\n hasValue = false;\n const value = lastValue!;\n lastValue = null;\n subscriber.next(value);\n }\n };\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value: T) => {\n // Cancel any pending debounce duration. We don't\n // need to null it out here yet tho, because we're just going\n // to create another one in a few lines.\n durationSubscriber?.unsubscribe();\n hasValue = true;\n lastValue = value;\n // Capture our duration subscriber, so we can unsubscribe it when we're notified\n // and we're going to emit the value.\n durationSubscriber = createOperatorSubscriber(subscriber, emit, noop);\n // Subscribe to the duration.\n innerFrom(durationSelector(value)).subscribe(durationSubscriber);\n },\n () => {\n // Source completed.\n // Emit any pending debounced values then complete\n emit();\n subscriber.complete();\n },\n // Pass all errors through to consumer\n undefined,\n () => {\n // Finalization.\n lastValue = durationSubscriber = null;\n }\n )\n );\n });\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { Subscription } from '../Subscription';\nimport { MonoTypeOperatorFunction, SchedulerAction, SchedulerLike } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Emits a notification from the source Observable only after a particular time span\n * has passed without another source emission.\n *\n * <span class=\"informal\">It's like {@link delay}, but passes only the most\n * recent notification from each burst of emissions.</span>\n *\n * \n *\n * `debounceTime` delays notifications emitted by the source Observable, but drops\n * previous pending delayed emissions if a new notification arrives on the source\n * Observable. This operator keeps track of the most recent notification from the\n * source Observable, and emits that only when `dueTime` has passed\n * without any other notification appearing on the source Observable. If a new value\n * appears before `dueTime` silence occurs, the previous notification will be dropped\n * and will not be emitted and a new `dueTime` is scheduled.\n * If the completing event happens during `dueTime` the last cached notification\n * is emitted before the completion event is forwarded to the output observable.\n * If the error event happens during `dueTime` or after it only the error event is\n * forwarded to the output observable. The cache notification is not emitted in this case.\n *\n * This is a rate-limiting operator, because it is impossible for more than one\n * notification to be emitted in any time window of duration `dueTime`, but it is also\n * a delay-like operator since output emissions do not occur at the same time as\n * they did on the source Observable. Optionally takes a {@link SchedulerLike} for\n * managing timers.\n *\n * ## Example\n *\n * Emit the most recent click after a burst of clicks\n *\n * ```ts\n * import { fromEvent, debounceTime } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(debounceTime(1000));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link auditTime}\n * @see {@link debounce}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link throttle}\n * @see {@link throttleTime}\n *\n * @param {number} dueTime The timeout duration in milliseconds (or the time\n * unit determined internally by the optional `scheduler`) for the window of\n * time required to wait for emission silence before emitting the most recent\n * source value.\n * @param {SchedulerLike} [scheduler=async] The {@link SchedulerLike} to use for\n * managing the timers that handle the timeout for each value.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by the specified `dueTime`, and may drop some values\n * if they occur too frequently.\n */\nexport function debounceTime<T>(dueTime: number, scheduler: SchedulerLike = asyncScheduler): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let activeTask: Subscription | null = null;\n let lastValue: T | null = null;\n let lastTime: number | null = null;\n\n const emit = () => {\n if (activeTask) {\n // We have a value! Free up memory first, then emit the value.\n activeTask.unsubscribe();\n activeTask = null;\n const value = lastValue!;\n lastValue = null;\n subscriber.next(value);\n }\n };\n function emitWhenIdle(this: SchedulerAction<unknown>) {\n // This is called `dueTime` after the first value\n // but we might have received new values during this window!\n\n const targetTime = lastTime! + dueTime;\n const now = scheduler.now();\n if (now < targetTime) {\n // On that case, re-schedule to the new target\n activeTask = this.schedule(undefined, targetTime - now);\n subscriber.add(activeTask);\n return;\n }\n\n emit();\n }\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value: T) => {\n lastValue = value;\n lastTime = scheduler.now();\n\n // Only set up a task if it's not already up\n if (!activeTask) {\n activeTask = scheduler.schedule(emitWhenIdle, dueTime);\n subscriber.add(activeTask);\n }\n },\n () => {\n // Source completed.\n // Emit any pending debounced values then complete\n emit();\n subscriber.complete();\n },\n // Pass all errors through to consumer.\n undefined,\n () => {\n // Finalization.\n lastValue = activeTask = null;\n }\n )\n );\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Emits a given value if the source Observable completes without emitting any\n * `next` value, otherwise mirrors the source Observable.\n *\n * <span class=\"informal\">If the source Observable turns out to be empty, then\n * this operator will emit a default value.</span>\n *\n * \n *\n * `defaultIfEmpty` emits the values emitted by the source Observable or a\n * specified default value if the source Observable is empty (completes without\n * having emitted any `next` value).\n *\n * ## Example\n *\n * If no clicks happen in 5 seconds, then emit 'no clicks'\n *\n * ```ts\n * import { fromEvent, takeUntil, interval, defaultIfEmpty } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const clicksBeforeFive = clicks.pipe(takeUntil(interval(5000)));\n * const result = clicksBeforeFive.pipe(defaultIfEmpty('no clicks'));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link empty}\n * @see {@link last}\n *\n * @param defaultValue The default value used if the source\n * Observable is empty.\n * @return A function that returns an Observable that emits either the\n * specified `defaultValue` if the source Observable emits no items, or the\n * values emitted by the source Observable.\n */\nexport function defaultIfEmpty<T, R>(defaultValue: R): OperatorFunction<T, T | R> {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n hasValue = true;\n subscriber.next(value);\n },\n () => {\n if (!hasValue) {\n subscriber.next(defaultValue!);\n }\n subscriber.complete();\n }\n )\n );\n });\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Emits only the first `count` values emitted by the source Observable.\n *\n * <span class=\"informal\">Takes the first `count` values from the source, then\n * completes.</span>\n *\n * \n *\n * `take` returns an Observable that emits only the first `count` values emitted\n * by the source Observable. If the source emits fewer than `count` values then\n * all of its values are emitted. After that, it completes, regardless if the\n * source completes.\n *\n * ## Example\n *\n * Take the first 5 seconds of an infinite 1-second interval Observable\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const intervalCount = interval(1000);\n * const takeFive = intervalCount.pipe(take(5));\n * takeFive.subscribe(x => console.log(x));\n *\n * // Logs:\n * // 0\n * // 1\n * // 2\n * // 3\n * // 4\n * ```\n *\n * @see {@link takeLast}\n * @see {@link takeUntil}\n * @see {@link takeWhile}\n * @see {@link skip}\n *\n * @param count The maximum number of `next` values to emit.\n * @return A function that returns an Observable that emits only the first\n * `count` values emitted by the source Observable, or all of the values from\n * the source if the source emits fewer than `count` values.\n */\nexport function take<T>(count: number): MonoTypeOperatorFunction<T> {\n return count <= 0\n ? // If we are taking no values, that's empty.\n () => EMPTY\n : operate((source, subscriber) => {\n let seen = 0;\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n // Increment the number of values we have seen,\n // then check it against the allowed count to see\n // if we are still letting values through.\n if (++seen <= count) {\n subscriber.next(value);\n // If we have met or passed our allowed count,\n // we need to complete. We have to do <= here,\n // because re-entrant code will increment `seen` twice.\n if (count <= seen) {\n subscriber.complete();\n }\n }\n })\n );\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { noop } from '../util/noop';\n\n/**\n * Ignores all items emitted by the source Observable and only passes calls of `complete` or `error`.\n *\n * \n *\n * The `ignoreElements` operator suppresses all items emitted by the source Observable,\n * but allows its termination notification (either `error` or `complete`) to pass through unchanged.\n *\n * If you do not care about the items being emitted by an Observable, but you do want to be notified\n * when it completes or when it terminates with an error, you can apply the `ignoreElements` operator\n * to the Observable, which will ensure that it will never call its observers\u2019 `next` handlers.\n *\n * ## Example\n *\n * Ignore all `next` emissions from the source\n *\n * ```ts\n * import { of, ignoreElements } from 'rxjs';\n *\n * of('you', 'talking', 'to', 'me')\n * .pipe(ignoreElements())\n * .subscribe({\n * next: word => console.log(word),\n * error: err => console.log('error:', err),\n * complete: () => console.log('the end'),\n * });\n *\n * // result:\n * // 'the end'\n * ```\n *\n * @return A function that returns an empty Observable that only calls\n * `complete` or `error`, based on which one is called by the source\n * Observable.\n */\nexport function ignoreElements(): OperatorFunction<unknown, never> {\n return operate((source, subscriber) => {\n source.subscribe(createOperatorSubscriber(subscriber, noop));\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { map } from './map';\n\n/** @deprecated To be removed in v9. Use {@link map} instead: `map(() => value)`. */\nexport function mapTo<R>(value: R): OperatorFunction<unknown, R>;\n/**\n * @deprecated Do not specify explicit type parameters. Signatures with type parameters\n * that cannot be inferred will be removed in v8. `mapTo` itself will be removed in v9,\n * use {@link map} instead: `map(() => value)`.\n * */\nexport function mapTo<T, R>(value: R): OperatorFunction<T, R>;\n\n/**\n * Emits the given constant value on the output Observable every time the source\n * Observable emits a value.\n *\n * <span class=\"informal\">Like {@link map}, but it maps every source value to\n * the same output value every time.</span>\n *\n * \n *\n * Takes a constant `value` as argument, and emits that whenever the source\n * Observable emits a value. In other words, ignores the actual source value,\n * and simply uses the emission moment to know when to emit the given `value`.\n *\n * ## Example\n *\n * Map every click to the string `'Hi'`\n *\n * ```ts\n * import { fromEvent, mapTo } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const greetings = clicks.pipe(mapTo('Hi'));\n *\n * greetings.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link map}\n *\n * @param value The value to map each source value to.\n * @return A function that returns an Observable that emits the given `value`\n * every time the source Observable emits.\n * @deprecated To be removed in v9. Use {@link map} instead: `map(() => value)`.\n */\nexport function mapTo<R>(value: R): OperatorFunction<unknown, R> {\n return map(() => value);\n}\n", "import { Observable } from '../Observable';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { concat } from '../observable/concat';\nimport { take } from './take';\nimport { ignoreElements } from './ignoreElements';\nimport { mapTo } from './mapTo';\nimport { mergeMap } from './mergeMap';\nimport { innerFrom } from '../observable/innerFrom';\n\n/** @deprecated The `subscriptionDelay` parameter will be removed in v8. */\nexport function delayWhen<T>(\n delayDurationSelector: (value: T, index: number) => ObservableInput<any>,\n subscriptionDelay: Observable<any>\n): MonoTypeOperatorFunction<T>;\nexport function delayWhen<T>(delayDurationSelector: (value: T, index: number) => ObservableInput<any>): MonoTypeOperatorFunction<T>;\n\n/**\n * Delays the emission of items from the source Observable by a given time span\n * determined by the emissions of another Observable.\n *\n * <span class=\"informal\">It's like {@link delay}, but the time span of the\n * delay duration is determined by a second Observable.</span>\n *\n * \n *\n * `delayWhen` operator shifts each emitted value from the source Observable by\n * a time span determined by another Observable. When the source emits a value,\n * the `delayDurationSelector` function is called with the value emitted from\n * the source Observable as the first argument to the `delayDurationSelector`.\n * The `delayDurationSelector` function should return an {@link ObservableInput},\n * that is internally converted to an Observable that is called the \"duration\"\n * Observable.\n *\n * The source value is emitted on the output Observable only when the \"duration\"\n * Observable emits ({@link guide/glossary-and-semantics#next next}s) any value.\n * Upon that, the \"duration\" Observable gets unsubscribed.\n *\n * Before RxJS V7, the {@link guide/glossary-and-semantics#complete completion}\n * of the \"duration\" Observable would have been triggering the emission of the\n * source value to the output Observable, but with RxJS V7, this is not the case\n * anymore.\n *\n * Only next notifications (from the \"duration\" Observable) trigger values from\n * the source Observable to be passed to the output Observable. If the \"duration\"\n * Observable only emits the complete notification (without next), the value\n * emitted by the source Observable will never get to the output Observable - it\n * will be swallowed. If the \"duration\" Observable errors, the error will be\n * propagated to the output Observable.\n *\n * Optionally, `delayWhen` takes a second argument, `subscriptionDelay`, which\n * is an Observable. When `subscriptionDelay` emits its first value or\n * completes, the source Observable is subscribed to and starts behaving like\n * described in the previous paragraph. If `subscriptionDelay` is not provided,\n * `delayWhen` will subscribe to the source Observable as soon as the output\n * Observable is subscribed.\n *\n * ## Example\n *\n * Delay each click by a random amount of time, between 0 and 5 seconds\n *\n * ```ts\n * import { fromEvent, delayWhen, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const delayedClicks = clicks.pipe(\n * delayWhen(() => interval(Math.random() * 5000))\n * );\n * delayedClicks.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link delay}\n * @see {@link throttle}\n * @see {@link throttleTime}\n * @see {@link debounce}\n * @see {@link debounceTime}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link audit}\n * @see {@link auditTime}\n *\n * @param delayDurationSelector A function that returns an `ObservableInput` for\n * each `value` emitted by the source Observable, which is then used to delay the\n * emission of that `value` on the output Observable until the `ObservableInput`\n * returned from this function emits a next value. When called, beside `value`,\n * this function receives a zero-based `index` of the emission order.\n * @param subscriptionDelay An Observable that triggers the subscription to the\n * source Observable once it emits any value.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by an amount of time specified by the Observable\n * returned by `delayDurationSelector`.\n */\nexport function delayWhen<T>(\n delayDurationSelector: (value: T, index: number) => ObservableInput<any>,\n subscriptionDelay?: Observable<any>\n): MonoTypeOperatorFunction<T> {\n if (subscriptionDelay) {\n // DEPRECATED PATH\n return (source: Observable<T>) =>\n concat(subscriptionDelay.pipe(take(1), ignoreElements()), source.pipe(delayWhen(delayDurationSelector)));\n }\n\n return mergeMap((value, index) => innerFrom(delayDurationSelector(value, index)).pipe(take(1), mapTo(value)));\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { delayWhen } from './delayWhen';\nimport { timer } from '../observable/timer';\n\n/**\n * Delays the emission of items from the source Observable by a given timeout or\n * until a given Date.\n *\n * <span class=\"informal\">Time shifts each item by some specified amount of\n * milliseconds.</span>\n *\n * \n *\n * If the delay argument is a Number, this operator time shifts the source\n * Observable by that amount of time expressed in milliseconds. The relative\n * time intervals between the values are preserved.\n *\n * If the delay argument is a Date, this operator time shifts the start of the\n * Observable execution until the given date occurs.\n *\n * ## Examples\n *\n * Delay each click by one second\n *\n * ```ts\n * import { fromEvent, delay } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const delayedClicks = clicks.pipe(delay(1000)); // each click emitted after 1 second\n * delayedClicks.subscribe(x => console.log(x));\n * ```\n *\n * Delay all clicks until a future date happens\n *\n * ```ts\n * import { fromEvent, delay } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const date = new Date('March 15, 2050 12:00:00'); // in the future\n * const delayedClicks = clicks.pipe(delay(date)); // click emitted only after that date\n * delayedClicks.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link delayWhen}\n * @see {@link throttle}\n * @see {@link throttleTime}\n * @see {@link debounce}\n * @see {@link debounceTime}\n * @see {@link sample}\n * @see {@link sampleTime}\n * @see {@link audit}\n * @see {@link auditTime}\n *\n * @param {number|Date} due The delay duration in milliseconds (a `number`) or\n * a `Date` until which the emission of the source items is delayed.\n * @param {SchedulerLike} [scheduler=async] The {@link SchedulerLike} to use for\n * managing the timers that handle the time-shift for each item.\n * @return A function that returns an Observable that delays the emissions of\n * the source Observable by the specified timeout or Date.\n */\nexport function delay<T>(due: number | Date, scheduler: SchedulerLike = asyncScheduler): MonoTypeOperatorFunction<T> {\n const duration = timer(due, scheduler);\n return delayWhen(() => duration);\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { identity } from '../util/identity';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\nexport function distinctUntilChanged<T>(comparator?: (previous: T, current: T) => boolean): MonoTypeOperatorFunction<T>;\nexport function distinctUntilChanged<T, K>(\n comparator: (previous: K, current: K) => boolean,\n keySelector: (value: T) => K\n): MonoTypeOperatorFunction<T>;\n\n/**\n * Returns a result {@link Observable} that emits all values pushed by the source observable if they\n * are distinct in comparison to the last value the result observable emitted.\n *\n * When provided without parameters or with the first parameter (`{@link distinctUntilChanged#comparator comparator}`),\n * it behaves like this:\n *\n * 1. It will always emit the first value from the source.\n * 2. For all subsequent values pushed by the source, they will be compared to the previously emitted values\n * using the provided `comparator` or an `===` equality check.\n * 3. If the value pushed by the source is determined to be unequal by this check, that value is emitted and\n * becomes the new \"previously emitted value\" internally.\n *\n * When the second parameter (`{@link distinctUntilChanged#keySelector keySelector}`) is provided, the behavior\n * changes:\n *\n * 1. It will always emit the first value from the source.\n * 2. The `keySelector` will be run against all values, including the first value.\n * 3. For all values after the first, the selected key will be compared against the key selected from\n * the previously emitted value using the `comparator`.\n * 4. If the keys are determined to be unequal by this check, the value (not the key), is emitted\n * and the selected key from that value is saved for future comparisons against other keys.\n *\n * ## Examples\n *\n * A very basic example with no `{@link distinctUntilChanged#comparator comparator}`. Note that `1` is emitted more than once,\n * because it's distinct in comparison to the _previously emitted_ value,\n * not in comparison to _all other emitted values_.\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * of(1, 1, 1, 2, 2, 2, 1, 1, 3, 3)\n * .pipe(distinctUntilChanged())\n * .subscribe(console.log);\n * // Logs: 1, 2, 1, 3\n * ```\n *\n * With a `{@link distinctUntilChanged#comparator comparator}`, you can do custom comparisons. Let's say\n * you only want to emit a value when all of its components have\n * changed:\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * const totallyDifferentBuilds$ = of(\n * { engineVersion: '1.1.0', transmissionVersion: '1.2.0' },\n * { engineVersion: '1.1.0', transmissionVersion: '1.4.0' },\n * { engineVersion: '1.3.0', transmissionVersion: '1.4.0' },\n * { engineVersion: '1.3.0', transmissionVersion: '1.5.0' },\n * { engineVersion: '2.0.0', transmissionVersion: '1.5.0' }\n * ).pipe(\n * distinctUntilChanged((prev, curr) => {\n * return (\n * prev.engineVersion === curr.engineVersion ||\n * prev.transmissionVersion === curr.transmissionVersion\n * );\n * })\n * );\n *\n * totallyDifferentBuilds$.subscribe(console.log);\n *\n * // Logs:\n * // { engineVersion: '1.1.0', transmissionVersion: '1.2.0' }\n * // { engineVersion: '1.3.0', transmissionVersion: '1.4.0' }\n * // { engineVersion: '2.0.0', transmissionVersion: '1.5.0' }\n * ```\n *\n * You can also provide a custom `{@link distinctUntilChanged#comparator comparator}` to check that emitted\n * changes are only in one direction. Let's say you only want to get\n * the next record temperature:\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * const temps$ = of(30, 31, 20, 34, 33, 29, 35, 20);\n *\n * const recordHighs$ = temps$.pipe(\n * distinctUntilChanged((prevHigh, temp) => {\n * // If the current temp is less than\n * // or the same as the previous record,\n * // the record hasn't changed.\n * return temp <= prevHigh;\n * })\n * );\n *\n * recordHighs$.subscribe(console.log);\n * // Logs: 30, 31, 34, 35\n * ```\n *\n * Selecting update events only when the `updatedBy` field shows\n * the account changed hands.\n *\n * ```ts\n * import { of, distinctUntilChanged } from 'rxjs';\n *\n * // A stream of updates to a given account\n * const accountUpdates$ = of(\n * { updatedBy: 'blesh', data: [] },\n * { updatedBy: 'blesh', data: [] },\n * { updatedBy: 'ncjamieson', data: [] },\n * { updatedBy: 'ncjamieson', data: [] },\n * { updatedBy: 'blesh', data: [] }\n * );\n *\n * // We only want the events where it changed hands\n * const changedHands$ = accountUpdates$.pipe(\n * distinctUntilChanged(undefined, update => update.updatedBy)\n * );\n *\n * changedHands$.subscribe(console.log);\n * // Logs:\n * // { updatedBy: 'blesh', data: Array[0] }\n * // { updatedBy: 'ncjamieson', data: Array[0] }\n * // { updatedBy: 'blesh', data: Array[0] }\n * ```\n *\n * @see {@link distinct}\n * @see {@link distinctUntilKeyChanged}\n *\n * @param comparator A function used to compare the previous and current keys for\n * equality. Defaults to a `===` check.\n * @param keySelector Used to select a key value to be passed to the `comparator`.\n *\n * @return A function that returns an Observable that emits items from the\n * source Observable with distinct values.\n */\nexport function distinctUntilChanged<T, K>(\n comparator?: (previous: K, current: K) => boolean,\n keySelector: (value: T) => K = identity as (value: T) => K\n): MonoTypeOperatorFunction<T> {\n // We've been allowing `null` do be passed as the `compare`, so we can't do\n // a default value for the parameter, because that will only work\n // for `undefined`.\n comparator = comparator ?? defaultCompare;\n\n return operate((source, subscriber) => {\n // The previous key, used to compare against keys selected\n // from new arrivals to determine \"distinctiveness\".\n let previousKey: K;\n // Whether or not this is the first value we've gotten.\n let first = true;\n\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n // We always call the key selector.\n const currentKey = keySelector(value);\n\n // If it's the first value, we always emit it.\n // Otherwise, we compare this key to the previous key, and\n // if the comparer returns false, we emit.\n if (first || !comparator!(previousKey, currentKey)) {\n // Update our state *before* we emit the value\n // as emission can be the source of re-entrant code\n // in functional libraries like this. We only really\n // need to do this if it's the first value, or if the\n // key we're tracking in previous needs to change.\n first = false;\n previousKey = currentKey;\n\n // Emit the value!\n subscriber.next(value);\n }\n })\n );\n });\n}\n\nfunction defaultCompare(a: any, b: any) {\n return a === b;\n}\n", "import { distinctUntilChanged } from './distinctUntilChanged';\nimport { MonoTypeOperatorFunction } from '../types';\n\n/* tslint:disable:max-line-length */\nexport function distinctUntilKeyChanged<T>(key: keyof T): MonoTypeOperatorFunction<T>;\nexport function distinctUntilKeyChanged<T, K extends keyof T>(key: K, compare: (x: T[K], y: T[K]) => boolean): MonoTypeOperatorFunction<T>;\n/* tslint:enable:max-line-length */\n\n/**\n * Returns an Observable that emits all items emitted by the source Observable that are distinct by comparison from the previous item,\n * using a property accessed by using the key provided to check if the two items are distinct.\n *\n * If a comparator function is provided, then it will be called for each item to test for whether or not that value should be emitted.\n *\n * If a comparator function is not provided, an equality check is used by default.\n *\n * ## Examples\n *\n * An example comparing the name of persons\n *\n * ```ts\n * import { of, distinctUntilKeyChanged } from 'rxjs';\n *\n * of(\n * { age: 4, name: 'Foo' },\n * { age: 7, name: 'Bar' },\n * { age: 5, name: 'Foo' },\n * { age: 6, name: 'Foo' }\n * ).pipe(\n * distinctUntilKeyChanged('name')\n * )\n * .subscribe(x => console.log(x));\n *\n * // displays:\n * // { age: 4, name: 'Foo' }\n * // { age: 7, name: 'Bar' }\n * // { age: 5, name: 'Foo' }\n * ```\n *\n * An example comparing the first letters of the name\n *\n * ```ts\n * import { of, distinctUntilKeyChanged } from 'rxjs';\n *\n * of(\n * { age: 4, name: 'Foo1' },\n * { age: 7, name: 'Bar' },\n * { age: 5, name: 'Foo2' },\n * { age: 6, name: 'Foo3' }\n * ).pipe(\n * distinctUntilKeyChanged('name', (x, y) => x.substring(0, 3) === y.substring(0, 3))\n * )\n * .subscribe(x => console.log(x));\n *\n * // displays:\n * // { age: 4, name: 'Foo1' }\n * // { age: 7, name: 'Bar' }\n * // { age: 5, name: 'Foo2' }\n * ```\n *\n * @see {@link distinct}\n * @see {@link distinctUntilChanged}\n *\n * @param {string} key String key for object property lookup on each item.\n * @param {function} [compare] Optional comparison function called to test if an item is distinct from the previous item in the source.\n * @return A function that returns an Observable that emits items from the\n * source Observable with distinct values based on the key specified.\n */\nexport function distinctUntilKeyChanged<T, K extends keyof T>(key: K, compare?: (x: T[K], y: T[K]) => boolean): MonoTypeOperatorFunction<T> {\n return distinctUntilChanged((x: T, y: T) => compare ? compare(x[key], y[key]) : x[key] === y[key]);\n}\n", "import { EmptyError } from '../util/EmptyError';\nimport { MonoTypeOperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * If the source observable completes without emitting a value, it will emit\n * an error. The error will be created at that time by the optional\n * `errorFactory` argument, otherwise, the error will be {@link EmptyError}.\n *\n * \n *\n * ## Example\n *\n * Throw an error if the document wasn't clicked within 1 second\n *\n * ```ts\n * import { fromEvent, takeUntil, timer, throwIfEmpty } from 'rxjs';\n *\n * const click$ = fromEvent(document, 'click');\n *\n * click$.pipe(\n * takeUntil(timer(1000)),\n * throwIfEmpty(() => new Error('The document was not clicked within 1 second'))\n * )\n * .subscribe({\n * next() {\n * console.log('The document was clicked');\n * },\n * error(err) {\n * console.error(err.message);\n * }\n * });\n * ```\n *\n * @param errorFactory A factory function called to produce the\n * error to be thrown when the source observable completes without emitting a\n * value.\n * @return A function that returns an Observable that throws an error if the\n * source Observable completed without emitting.\n */\nexport function throwIfEmpty<T>(errorFactory: () => any = defaultErrorFactory): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let hasValue = false;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n hasValue = true;\n subscriber.next(value);\n },\n () => (hasValue ? subscriber.complete() : subscriber.error(errorFactory()))\n )\n );\n });\n}\n\nfunction defaultErrorFactory() {\n return new EmptyError();\n}\n", "/** prettier */\nimport { Observable } from '../Observable';\nimport { concat } from '../observable/concat';\nimport { of } from '../observable/of';\nimport { MonoTypeOperatorFunction, SchedulerLike, OperatorFunction, ValueFromArray } from '../types';\n\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `concatAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function endWith<T>(scheduler: SchedulerLike): MonoTypeOperatorFunction<T>;\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `concatAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function endWith<T, A extends unknown[] = T[]>(\n ...valuesAndScheduler: [...A, SchedulerLike]\n): OperatorFunction<T, T | ValueFromArray<A>>;\n\nexport function endWith<T, A extends unknown[] = T[]>(...values: A): OperatorFunction<T, T | ValueFromArray<A>>;\n\n/**\n * Returns an observable that will emit all values from the source, then synchronously emit\n * the provided value(s) immediately after the source completes.\n *\n * NOTE: Passing a last argument of a Scheduler is _deprecated_, and may result in incorrect\n * types in TypeScript.\n *\n * This is useful for knowing when an observable ends. Particularly when paired with an\n * operator like {@link takeUntil}\n *\n * \n *\n * ## Example\n *\n * Emit values to know when an interval starts and stops. The interval will\n * stop when a user clicks anywhere on the document.\n *\n * ```ts\n * import { interval, map, fromEvent, startWith, takeUntil, endWith } from 'rxjs';\n *\n * const ticker$ = interval(5000).pipe(\n * map(() => 'tick')\n * );\n *\n * const documentClicks$ = fromEvent(document, 'click');\n *\n * ticker$.pipe(\n * startWith('interval started'),\n * takeUntil(documentClicks$),\n * endWith('interval ended by click')\n * )\n * .subscribe(x => console.log(x));\n *\n * // Result (assuming a user clicks after 15 seconds)\n * // 'interval started'\n * // 'tick'\n * // 'tick'\n * // 'tick'\n * // 'interval ended by click'\n * ```\n *\n * @see {@link startWith}\n * @see {@link concat}\n * @see {@link takeUntil}\n *\n * @param values Items you want the modified Observable to emit last.\n * @return A function that returns an Observable that emits all values from the\n * source, then synchronously emits the provided value(s) immediately after the\n * source completes.\n */\nexport function endWith<T>(...values: Array<T | SchedulerLike>): MonoTypeOperatorFunction<T> {\n return (source: Observable<T>) => concat(source, of(...values)) as Observable<T>;\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { operate } from '../util/lift';\n\n/**\n * Returns an Observable that mirrors the source Observable, but will call a specified function when\n * the source terminates on complete or error.\n * The specified function will also be called when the subscriber explicitly unsubscribes.\n *\n * ## Examples\n *\n * Execute callback function when the observable completes\n *\n * ```ts\n * import { interval, take, finalize } from 'rxjs';\n *\n * // emit value in sequence every 1 second\n * const source = interval(1000);\n * const example = source.pipe(\n * take(5), //take only the first 5 values\n * finalize(() => console.log('Sequence complete')) // Execute when the observable completes\n * );\n * const subscribe = example.subscribe(val => console.log(val));\n *\n * // results:\n * // 0\n * // 1\n * // 2\n * // 3\n * // 4\n * // 'Sequence complete'\n * ```\n *\n * Execute callback function when the subscriber explicitly unsubscribes\n *\n * ```ts\n * import { interval, finalize, tap, noop, timer } from 'rxjs';\n *\n * const source = interval(100).pipe(\n * finalize(() => console.log('[finalize] Called')),\n * tap({\n * next: () => console.log('[next] Called'),\n * error: () => console.log('[error] Not called'),\n * complete: () => console.log('[tap complete] Not called')\n * })\n * );\n *\n * const sub = source.subscribe({\n * next: x => console.log(x),\n * error: noop,\n * complete: () => console.log('[complete] Not called')\n * });\n *\n * timer(150).subscribe(() => sub.unsubscribe());\n *\n * // results:\n * // '[next] Called'\n * // 0\n * // '[finalize] Called'\n * ```\n *\n * @param {function} callback Function to be called when source terminates.\n * @return A function that returns an Observable that mirrors the source, but\n * will call the specified function on termination.\n */\nexport function finalize<T>(callback: () => void): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n // TODO: This try/finally was only added for `useDeprecatedSynchronousErrorHandling`.\n // REMOVE THIS WHEN THAT HOT GARBAGE IS REMOVED IN V8.\n try {\n source.subscribe(subscriber);\n } finally {\n subscriber.add(callback);\n }\n });\n}\n", "import { Observable } from '../Observable';\nimport { EmptyError } from '../util/EmptyError';\nimport { OperatorFunction, TruthyTypesOf } from '../types';\nimport { filter } from './filter';\nimport { take } from './take';\nimport { defaultIfEmpty } from './defaultIfEmpty';\nimport { throwIfEmpty } from './throwIfEmpty';\nimport { identity } from '../util/identity';\n\nexport function first<T, D = T>(predicate?: null, defaultValue?: D): OperatorFunction<T, T | D>;\nexport function first<T>(predicate: BooleanConstructor): OperatorFunction<T, TruthyTypesOf<T>>;\nexport function first<T, D>(predicate: BooleanConstructor, defaultValue: D): OperatorFunction<T, TruthyTypesOf<T> | D>;\nexport function first<T, S extends T>(\n predicate: (value: T, index: number, source: Observable<T>) => value is S,\n defaultValue?: S\n): OperatorFunction<T, S>;\nexport function first<T, S extends T, D>(\n predicate: (value: T, index: number, source: Observable<T>) => value is S,\n defaultValue: D\n): OperatorFunction<T, S | D>;\nexport function first<T, D = T>(\n predicate: (value: T, index: number, source: Observable<T>) => boolean,\n defaultValue?: D\n): OperatorFunction<T, T | D>;\n\n/**\n * Emits only the first value (or the first value that meets some condition)\n * emitted by the source Observable.\n *\n * <span class=\"informal\">Emits only the first value. Or emits only the first\n * value that passes some test.</span>\n *\n * \n *\n * If called with no arguments, `first` emits the first value of the source\n * Observable, then completes. If called with a `predicate` function, `first`\n * emits the first value of the source that matches the specified condition. Throws an error if\n * `defaultValue` was not provided and a matching element is not found.\n *\n * ## Examples\n *\n * Emit only the first click that happens on the DOM\n *\n * ```ts\n * import { fromEvent, first } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(first());\n * result.subscribe(x => console.log(x));\n * ```\n *\n * Emits the first click that happens on a DIV\n *\n * ```ts\n * import { fromEvent, first } from 'rxjs';\n *\n * const div = document.createElement('div');\n * div.style.cssText = 'width: 200px; height: 200px; background: #09c;';\n * document.body.appendChild(div);\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(first(ev => (<HTMLElement>ev.target).tagName === 'DIV'));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link filter}\n * @see {@link find}\n * @see {@link take}\n *\n * @throws {EmptyError} Delivers an EmptyError to the Observer's `error`\n * callback if the Observable completes before any `next` notification was sent.\n * This is how `first()` is different from {@link take}(1) which completes instead.\n *\n * @param {function(value: T, index: number, source: Observable<T>): boolean} [predicate]\n * An optional function called with each item to test for condition matching.\n * @param {D} [defaultValue] The default value emitted in case no valid value\n * was found on the source.\n * @return A function that returns an Observable that emits the first item that\n * matches the condition.\n */\nexport function first<T, D>(\n predicate?: ((value: T, index: number, source: Observable<T>) => boolean) | null,\n defaultValue?: D\n): OperatorFunction<T, T | D> {\n const hasDefaultValue = arguments.length >= 2;\n return (source: Observable<T>) =>\n source.pipe(\n predicate ? filter((v, i) => predicate(v, i, source)) : identity,\n take(1),\n hasDefaultValue ? defaultIfEmpty(defaultValue!) : throwIfEmpty(() => new EmptyError())\n );\n}\n", "import { EMPTY } from '../observable/empty';\nimport { MonoTypeOperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/**\n * Waits for the source to complete, then emits the last N values from the source,\n * as specified by the `count` argument.\n *\n * \n *\n * `takeLast` results in an observable that will hold values up to `count` values in memory,\n * until the source completes. It then pushes all values in memory to the consumer, in the\n * order they were received from the source, then notifies the consumer that it is\n * complete.\n *\n * If for some reason the source completes before the `count` supplied to `takeLast` is reached,\n * all values received until that point are emitted, and then completion is notified.\n *\n * **Warning**: Using `takeLast` with an observable that never completes will result\n * in an observable that never emits a value.\n *\n * ## Example\n *\n * Take the last 3 values of an Observable with many values\n *\n * ```ts\n * import { range, takeLast } from 'rxjs';\n *\n * const many = range(1, 100);\n * const lastThree = many.pipe(takeLast(3));\n * lastThree.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link take}\n * @see {@link takeUntil}\n * @see {@link takeWhile}\n * @see {@link skip}\n *\n * @param count The maximum number of values to emit from the end of\n * the sequence of values emitted by the source Observable.\n * @return A function that returns an Observable that emits at most the last\n * `count` values emitted by the source Observable.\n */\nexport function takeLast<T>(count: number): MonoTypeOperatorFunction<T> {\n return count <= 0\n ? () => EMPTY\n : operate((source, subscriber) => {\n // This buffer will hold the values we are going to emit\n // when the source completes. Since we only want to take the\n // last N values, we can't emit until we're sure we're not getting\n // any more values.\n let buffer: T[] = [];\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // Add the most recent value onto the end of our buffer.\n buffer.push(value);\n // If our buffer is now larger than the number of values we\n // want to take, we remove the oldest value from the buffer.\n count < buffer.length && buffer.shift();\n },\n () => {\n // The source completed, we now know what are last values\n // are, emit them in the order they were received.\n for (const value of buffer) {\n subscriber.next(value);\n }\n subscriber.complete();\n },\n // Errors are passed through to the consumer\n undefined,\n () => {\n // During finalization release the values in our buffer.\n buffer = null!;\n }\n )\n );\n });\n}\n", "import { ObservableInput, ObservableInputTuple, OperatorFunction, SchedulerLike } from '../types';\nimport { operate } from '../util/lift';\nimport { argsOrArgArray } from '../util/argsOrArgArray';\nimport { mergeAll } from './mergeAll';\nimport { popNumber, popScheduler } from '../util/args';\nimport { from } from '../observable/from';\n\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(...sources: [...ObservableInputTuple<A>]): OperatorFunction<T, T | A[number]>;\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(\n ...sourcesAndConcurrency: [...ObservableInputTuple<A>, number]\n): OperatorFunction<T, T | A[number]>;\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(\n ...sourcesAndScheduler: [...ObservableInputTuple<A>, SchedulerLike]\n): OperatorFunction<T, T | A[number]>;\n/** @deprecated Replaced with {@link mergeWith}. Will be removed in v8. */\nexport function merge<T, A extends readonly unknown[]>(\n ...sourcesAndConcurrencyAndScheduler: [...ObservableInputTuple<A>, number, SchedulerLike]\n): OperatorFunction<T, T | A[number]>;\n\nexport function merge<T>(...args: unknown[]): OperatorFunction<T, unknown> {\n const scheduler = popScheduler(args);\n const concurrent = popNumber(args, Infinity);\n args = argsOrArgArray(args);\n\n return operate((source, subscriber) => {\n mergeAll(concurrent)(from([source, ...(args as ObservableInput<T>[])], scheduler)).subscribe(subscriber);\n });\n}\n", "import { ObservableInputTuple, OperatorFunction } from '../types';\nimport { merge } from './merge';\n\n/**\n * Merge the values from all observables to a single observable result.\n *\n * Creates an observable, that when subscribed to, subscribes to the source\n * observable, and all other sources provided as arguments. All values from\n * every source are emitted from the resulting subscription.\n *\n * When all sources complete, the resulting observable will complete.\n *\n * When any source errors, the resulting observable will error.\n *\n * ## Example\n *\n * Joining all outputs from multiple user input event streams\n *\n * ```ts\n * import { fromEvent, map, mergeWith } from 'rxjs';\n *\n * const clicks$ = fromEvent(document, 'click').pipe(map(() => 'click'));\n * const mousemoves$ = fromEvent(document, 'mousemove').pipe(map(() => 'mousemove'));\n * const dblclicks$ = fromEvent(document, 'dblclick').pipe(map(() => 'dblclick'));\n *\n * mousemoves$\n * .pipe(mergeWith(clicks$, dblclicks$))\n * .subscribe(x => console.log(x));\n *\n * // result (assuming user interactions)\n * // 'mousemove'\n * // 'mousemove'\n * // 'mousemove'\n * // 'click'\n * // 'click'\n * // 'dblclick'\n * ```\n *\n * @see {@link merge}\n *\n * @param otherSources the sources to combine the current source with.\n * @return A function that returns an Observable that merges the values from\n * all given Observables.\n */\nexport function mergeWith<T, A extends readonly unknown[]>(\n ...otherSources: [...ObservableInputTuple<A>]\n): OperatorFunction<T, T | A[number]> {\n return merge(...otherSources);\n}\n", "import { Subscription } from '../Subscription';\nimport { EMPTY } from '../observable/empty';\nimport { operate } from '../util/lift';\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { timer } from '../observable/timer';\n\nexport interface RepeatConfig {\n /**\n * The number of times to repeat the source. Defaults to `Infinity`.\n */\n count?: number;\n\n /**\n * If a `number`, will delay the repeat of the source by that number of milliseconds.\n * If a function, it will provide the number of times the source has been subscribed to,\n * and the return value should be a valid observable input that will notify when the source\n * should be repeated. If the notifier observable is empty, the result will complete.\n */\n delay?: number | ((count: number) => ObservableInput<any>);\n}\n\n/**\n * Returns an Observable that will resubscribe to the source stream when the source stream completes.\n *\n * <span class=\"informal\">Repeats all values emitted on the source. It's like {@link retry}, but for non error cases.</span>\n *\n * \n *\n * Repeat will output values from a source until the source completes, then it will resubscribe to the\n * source a specified number of times, with a specified delay. Repeat can be particularly useful in\n * combination with closing operators like {@link take}, {@link takeUntil}, {@link first}, or {@link takeWhile},\n * as it can be used to restart a source again from scratch.\n *\n * Repeat is very similar to {@link retry}, where {@link retry} will resubscribe to the source in the error case, but\n * `repeat` will resubscribe if the source completes.\n *\n * Note that `repeat` will _not_ catch errors. Use {@link retry} for that.\n *\n * - `repeat(0)` returns an empty observable\n * - `repeat()` will repeat forever\n * - `repeat({ delay: 200 })` will repeat forever, with a delay of 200ms between repetitions.\n * - `repeat({ count: 2, delay: 400 })` will repeat twice, with a delay of 400ms between repetitions.\n * - `repeat({ delay: (count) => timer(count * 1000) })` will repeat forever, but will have a delay that grows by one second for each repetition.\n *\n * ## Example\n *\n * Repeat a message stream\n *\n * ```ts\n * import { of, repeat } from 'rxjs';\n *\n * const source = of('Repeat message');\n * const result = source.pipe(repeat(3));\n *\n * result.subscribe(x => console.log(x));\n *\n * // Results\n * // 'Repeat message'\n * // 'Repeat message'\n * // 'Repeat message'\n * ```\n *\n * Repeat 3 values, 2 times\n *\n * ```ts\n * import { interval, take, repeat } from 'rxjs';\n *\n * const source = interval(1000);\n * const result = source.pipe(take(3), repeat(2));\n *\n * result.subscribe(x => console.log(x));\n *\n * // Results every second\n * // 0\n * // 1\n * // 2\n * // 0\n * // 1\n * // 2\n * ```\n *\n * Defining two complex repeats with delays on the same source.\n * Note that the second repeat cannot be called until the first\n * repeat as exhausted it's count.\n *\n * ```ts\n * import { defer, of, repeat } from 'rxjs';\n *\n * const source = defer(() => {\n * return of(`Hello, it is ${new Date()}`)\n * });\n *\n * source.pipe(\n * // Repeat 3 times with a delay of 1 second between repetitions\n * repeat({\n * count: 3,\n * delay: 1000,\n * }),\n *\n * // *Then* repeat forever, but with an exponential step-back\n * // maxing out at 1 minute.\n * repeat({\n * delay: (count) => timer(Math.min(60000, 2 ^ count * 1000))\n * })\n * )\n * ```\n *\n * @see {@link repeatWhen}\n * @see {@link retry}\n *\n * @param count The number of times the source Observable items are repeated, a count of 0 will yield\n * an empty Observable.\n */\nexport function repeat<T>(countOrConfig?: number | RepeatConfig): MonoTypeOperatorFunction<T> {\n let count = Infinity;\n let delay: RepeatConfig['delay'];\n\n if (countOrConfig != null) {\n if (typeof countOrConfig === 'object') {\n ({ count = Infinity, delay } = countOrConfig);\n } else {\n count = countOrConfig;\n }\n }\n\n return count <= 0\n ? () => EMPTY\n : operate((source, subscriber) => {\n let soFar = 0;\n let sourceSub: Subscription | null;\n\n const resubscribe = () => {\n sourceSub?.unsubscribe();\n sourceSub = null;\n if (delay != null) {\n const notifier = typeof delay === 'number' ? timer(delay) : innerFrom(delay(soFar));\n const notifierSubscriber = createOperatorSubscriber(subscriber, () => {\n notifierSubscriber.unsubscribe();\n subscribeToSource();\n });\n notifier.subscribe(notifierSubscriber);\n } else {\n subscribeToSource();\n }\n };\n\n const subscribeToSource = () => {\n let syncUnsub = false;\n sourceSub = source.subscribe(\n createOperatorSubscriber(subscriber, undefined, () => {\n if (++soFar < count) {\n if (sourceSub) {\n resubscribe();\n } else {\n syncUnsub = true;\n }\n } else {\n subscriber.complete();\n }\n })\n );\n\n if (syncUnsub) {\n resubscribe();\n }\n };\n\n subscribeToSource();\n });\n}\n", "import { OperatorFunction } from '../types';\nimport { operate } from '../util/lift';\nimport { scanInternals } from './scanInternals';\n\nexport function scan<V, A = V>(accumulator: (acc: A | V, value: V, index: number) => A): OperatorFunction<V, V | A>;\nexport function scan<V, A>(accumulator: (acc: A, value: V, index: number) => A, seed: A): OperatorFunction<V, A>;\nexport function scan<V, A, S>(accumulator: (acc: A | S, value: V, index: number) => A, seed: S): OperatorFunction<V, A>;\n\n// TODO: link to a \"redux pattern\" section in the guide (location TBD)\n\n/**\n * Useful for encapsulating and managing state. Applies an accumulator (or \"reducer function\")\n * to each value from the source after an initial state is established -- either via\n * a `seed` value (second argument), or from the first value from the source.\n *\n * <span class=\"informal\">It's like {@link reduce}, but emits the current\n * accumulation state after each update</span>\n *\n * \n *\n * This operator maintains an internal state and emits it after processing each value as follows:\n *\n * 1. First value arrives\n * - If a `seed` value was supplied (as the second argument to `scan`), let `state = seed` and `value = firstValue`.\n * - If NO `seed` value was supplied (no second argument), let `state = firstValue` and go to 3.\n * 2. Let `state = accumulator(state, value)`.\n * - If an error is thrown by `accumulator`, notify the consumer of an error. The process ends.\n * 3. Emit `state`.\n * 4. Next value arrives, let `value = nextValue`, go to 2.\n *\n * ## Examples\n *\n * An average of previous numbers. This example shows how\n * not providing a `seed` can prime the stream with the\n * first value from the source.\n *\n * ```ts\n * import { of, scan, map } from 'rxjs';\n *\n * const numbers$ = of(1, 2, 3);\n *\n * numbers$\n * .pipe(\n * // Get the sum of the numbers coming in.\n * scan((total, n) => total + n),\n * // Get the average by dividing the sum by the total number\n * // received so far (which is 1 more than the zero-based index).\n * map((sum, index) => sum / (index + 1))\n * )\n * .subscribe(console.log);\n * ```\n *\n * The Fibonacci sequence. This example shows how you can use\n * a seed to prime accumulation process. Also... you know... Fibonacci.\n * So important to like, computers and stuff that its whiteboarded\n * in job interviews. Now you can show them the Rx version! (Please don't, haha)\n *\n * ```ts\n * import { interval, scan, map, startWith } from 'rxjs';\n *\n * const firstTwoFibs = [0, 1];\n * // An endless stream of Fibonacci numbers.\n * const fibonacci$ = interval(1000).pipe(\n * // Scan to get the fibonacci numbers (after 0, 1)\n * scan(([a, b]) => [b, a + b], firstTwoFibs),\n * // Get the second number in the tuple, it's the one you calculated\n * map(([, n]) => n),\n * // Start with our first two digits :)\n * startWith(...firstTwoFibs)\n * );\n *\n * fibonacci$.subscribe(console.log);\n * ```\n *\n * @see {@link expand}\n * @see {@link mergeScan}\n * @see {@link reduce}\n * @see {@link switchScan}\n *\n * @param accumulator A \"reducer function\". This will be called for each value after an initial state is\n * acquired.\n * @param seed The initial state. If this is not provided, the first value from the source will\n * be used as the initial state, and emitted without going through the accumulator. All subsequent values\n * will be processed by the accumulator function. If this is provided, all values will go through\n * the accumulator function.\n * @return A function that returns an Observable of the accumulated values.\n */\nexport function scan<V, A, S>(accumulator: (acc: V | A | S, value: V, index: number) => A, seed?: S): OperatorFunction<V, V | A> {\n // providing a seed of `undefined` *should* be valid and trigger\n // hasSeed! so don't use `seed !== undefined` checks!\n // For this reason, we have to check it here at the original call site\n // otherwise inside Operator/Subscriber we won't know if `undefined`\n // means they didn't provide anything or if they literally provided `undefined`\n return operate(scanInternals(accumulator, seed as S, arguments.length >= 2, true));\n}\n", "import { innerFrom } from '../observable/innerFrom';\nimport { Subject } from '../Subject';\nimport { SafeSubscriber } from '../Subscriber';\nimport { Subscription } from '../Subscription';\nimport { MonoTypeOperatorFunction, SubjectLike, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\n\nexport interface ShareConfig<T> {\n /**\n * The factory used to create the subject that will connect the source observable to\n * multicast consumers.\n */\n connector?: () => SubjectLike<T>;\n /**\n * If `true`, the resulting observable will reset internal state on error from source and return to a \"cold\" state. This\n * allows the resulting observable to be \"retried\" in the event of an error.\n * If `false`, when an error comes from the source it will push the error into the connecting subject, and the subject\n * will remain the connecting subject, meaning the resulting observable will not go \"cold\" again, and subsequent retries\n * or resubscriptions will resubscribe to that same subject. In all cases, RxJS subjects will emit the same error again, however\n * {@link ReplaySubject} will also push its buffered values before pushing the error.\n * It is also possible to pass a notifier factory returning an `ObservableInput` instead which grants more fine-grained\n * control over how and when the reset should happen. This allows behaviors like conditional or delayed resets.\n */\n resetOnError?: boolean | ((error: any) => ObservableInput<any>);\n /**\n * If `true`, the resulting observable will reset internal state on completion from source and return to a \"cold\" state. This\n * allows the resulting observable to be \"repeated\" after it is done.\n * If `false`, when the source completes, it will push the completion through the connecting subject, and the subject\n * will remain the connecting subject, meaning the resulting observable will not go \"cold\" again, and subsequent repeats\n * or resubscriptions will resubscribe to that same subject.\n * It is also possible to pass a notifier factory returning an `ObservableInput` instead which grants more fine-grained\n * control over how and when the reset should happen. This allows behaviors like conditional or delayed resets.\n */\n resetOnComplete?: boolean | (() => ObservableInput<any>);\n /**\n * If `true`, when the number of subscribers to the resulting observable reaches zero due to those subscribers unsubscribing, the\n * internal state will be reset and the resulting observable will return to a \"cold\" state. This means that the next\n * time the resulting observable is subscribed to, a new subject will be created and the source will be subscribed to\n * again.\n * If `false`, when the number of subscribers to the resulting observable reaches zero due to unsubscription, the subject\n * will remain connected to the source, and new subscriptions to the result will be connected through that same subject.\n * It is also possible to pass a notifier factory returning an `ObservableInput` instead which grants more fine-grained\n * control over how and when the reset should happen. This allows behaviors like conditional or delayed resets.\n */\n resetOnRefCountZero?: boolean | (() => ObservableInput<any>);\n}\n\nexport function share<T>(): MonoTypeOperatorFunction<T>;\n\nexport function share<T>(options: ShareConfig<T>): MonoTypeOperatorFunction<T>;\n\n/**\n * Returns a new Observable that multicasts (shares) the original Observable. As long as there is at least one\n * Subscriber this Observable will be subscribed and emitting data. When all subscribers have unsubscribed it will\n * unsubscribe from the source Observable. Because the Observable is multicasting it makes the stream `hot`.\n * This is an alias for `multicast(() => new Subject()), refCount()`.\n *\n * The subscription to the underlying source Observable can be reset (unsubscribe and resubscribe for new subscribers),\n * if the subscriber count to the shared observable drops to 0, or if the source Observable errors or completes. It is\n * possible to use notifier factories for the resets to allow for behaviors like conditional or delayed resets. Please\n * note that resetting on error or complete of the source Observable does not behave like a transparent retry or restart\n * of the source because the error or complete will be forwarded to all subscribers and their subscription will be\n * closed. Only new subscribers after a reset on error or complete happened will cause a fresh subscription to the\n * source. To achieve transparent retries or restarts pipe the source through appropriate operators before sharing.\n *\n * \n *\n * ## Example\n *\n * Generate new multicast Observable from the `source` Observable value\n *\n * ```ts\n * import { interval, tap, map, take, share } from 'rxjs';\n *\n * const source = interval(1000).pipe(\n * tap(x => console.log('Processing: ', x)),\n * map(x => x * x),\n * take(6),\n * share()\n * );\n *\n * source.subscribe(x => console.log('subscription 1: ', x));\n * source.subscribe(x => console.log('subscription 2: ', x));\n *\n * // Logs:\n * // Processing: 0\n * // subscription 1: 0\n * // subscription 2: 0\n * // Processing: 1\n * // subscription 1: 1\n * // subscription 2: 1\n * // Processing: 2\n * // subscription 1: 4\n * // subscription 2: 4\n * // Processing: 3\n * // subscription 1: 9\n * // subscription 2: 9\n * // Processing: 4\n * // subscription 1: 16\n * // subscription 2: 16\n * // Processing: 5\n * // subscription 1: 25\n * // subscription 2: 25\n * ```\n *\n * ## Example with notifier factory: Delayed reset\n *\n * ```ts\n * import { interval, take, share, timer } from 'rxjs';\n *\n * const source = interval(1000).pipe(\n * take(3),\n * share({\n * resetOnRefCountZero: () => timer(1000)\n * })\n * );\n *\n * const subscriptionOne = source.subscribe(x => console.log('subscription 1: ', x));\n * setTimeout(() => subscriptionOne.unsubscribe(), 1300);\n *\n * setTimeout(() => source.subscribe(x => console.log('subscription 2: ', x)), 1700);\n *\n * setTimeout(() => source.subscribe(x => console.log('subscription 3: ', x)), 5000);\n *\n * // Logs:\n * // subscription 1: 0\n * // (subscription 1 unsubscribes here)\n * // (subscription 2 subscribes here ~400ms later, source was not reset)\n * // subscription 2: 1\n * // subscription 2: 2\n * // (subscription 2 unsubscribes here)\n * // (subscription 3 subscribes here ~2000ms later, source did reset before)\n * // subscription 3: 0\n * // subscription 3: 1\n * // subscription 3: 2\n * ```\n *\n * @see {@link shareReplay}\n *\n * @return A function that returns an Observable that mirrors the source.\n */\nexport function share<T>(options: ShareConfig<T> = {}): MonoTypeOperatorFunction<T> {\n const { connector = () => new Subject<T>(), resetOnError = true, resetOnComplete = true, resetOnRefCountZero = true } = options;\n // It's necessary to use a wrapper here, as the _operator_ must be\n // referentially transparent. Otherwise, it cannot be used in calls to the\n // static `pipe` function - to create a partial pipeline.\n //\n // The _operator function_ - the function returned by the _operator_ - will\n // not be referentially transparent - as it shares its source - but the\n // _operator function_ is called when the complete pipeline is composed via a\n // call to a source observable's `pipe` method - not when the static `pipe`\n // function is called.\n return (wrapperSource) => {\n let connection: SafeSubscriber<T> | undefined;\n let resetConnection: Subscription | undefined;\n let subject: SubjectLike<T> | undefined;\n let refCount = 0;\n let hasCompleted = false;\n let hasErrored = false;\n\n const cancelReset = () => {\n resetConnection?.unsubscribe();\n resetConnection = undefined;\n };\n // Used to reset the internal state to a \"cold\"\n // state, as though it had never been subscribed to.\n const reset = () => {\n cancelReset();\n connection = subject = undefined;\n hasCompleted = hasErrored = false;\n };\n const resetAndUnsubscribe = () => {\n // We need to capture the connection before\n // we reset (if we need to reset).\n const conn = connection;\n reset();\n conn?.unsubscribe();\n };\n\n return operate<T, T>((source, subscriber) => {\n refCount++;\n if (!hasErrored && !hasCompleted) {\n cancelReset();\n }\n\n // Create the subject if we don't have one yet. Grab a local reference to\n // it as well, which avoids non-null assertions when using it and, if we\n // connect to it now, then error/complete need a reference after it was\n // reset.\n const dest = (subject = subject ?? connector());\n\n // Add the finalization directly to the subscriber - instead of returning it -\n // so that the handling of the subscriber's unsubscription will be wired\n // up _before_ the subscription to the source occurs. This is done so that\n // the assignment to the source connection's `closed` property will be seen\n // by synchronous firehose sources.\n subscriber.add(() => {\n refCount--;\n\n // If we're resetting on refCount === 0, and it's 0, we only want to do\n // that on \"unsubscribe\", really. Resetting on error or completion is a different\n // configuration.\n if (refCount === 0 && !hasErrored && !hasCompleted) {\n resetConnection = handleReset(resetAndUnsubscribe, resetOnRefCountZero);\n }\n });\n\n // The following line adds the subscription to the subscriber passed.\n // Basically, `subscriber === dest.subscribe(subscriber)` is `true`.\n dest.subscribe(subscriber);\n\n if (\n !connection &&\n // Check this shareReplay is still activate - it can be reset to 0\n // and be \"unsubscribed\" _before_ it actually subscribes.\n // If we were to subscribe then, it'd leak and get stuck.\n refCount > 0\n ) {\n // We need to create a subscriber here - rather than pass an observer and\n // assign the returned subscription to connection - because it's possible\n // for reentrant subscriptions to the shared observable to occur and in\n // those situations we want connection to be already-assigned so that we\n // don't create another connection to the source.\n connection = new SafeSubscriber({\n next: (value) => dest.next(value),\n error: (err) => {\n hasErrored = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnError, err);\n dest.error(err);\n },\n complete: () => {\n hasCompleted = true;\n cancelReset();\n resetConnection = handleReset(reset, resetOnComplete);\n dest.complete();\n },\n });\n innerFrom(source).subscribe(connection);\n }\n })(wrapperSource);\n };\n}\n\nfunction handleReset<T extends unknown[] = never[]>(\n reset: () => void,\n on: boolean | ((...args: T) => ObservableInput<any>),\n ...args: T\n): Subscription | undefined {\n if (on === true) {\n reset();\n return;\n }\n\n if (on === false) {\n return;\n }\n\n const onSubscriber = new SafeSubscriber({\n next: () => {\n onSubscriber.unsubscribe();\n reset();\n },\n });\n\n return innerFrom(on(...args)).subscribe(onSubscriber);\n}\n", "import { ReplaySubject } from '../ReplaySubject';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { share } from './share';\n\nexport interface ShareReplayConfig {\n bufferSize?: number;\n windowTime?: number;\n refCount: boolean;\n scheduler?: SchedulerLike;\n}\n\nexport function shareReplay<T>(config: ShareReplayConfig): MonoTypeOperatorFunction<T>;\nexport function shareReplay<T>(bufferSize?: number, windowTime?: number, scheduler?: SchedulerLike): MonoTypeOperatorFunction<T>;\n\n/**\n * Share source and replay specified number of emissions on subscription.\n *\n * This operator is a specialization of `replay` that connects to a source observable\n * and multicasts through a `ReplaySubject` constructed with the specified arguments.\n * A successfully completed source will stay cached in the `shareReplay`ed observable forever,\n * but an errored source can be retried.\n *\n * ## Why use `shareReplay`?\n *\n * You generally want to use `shareReplay` when you have side-effects or taxing computations\n * that you do not wish to be executed amongst multiple subscribers.\n * It may also be valuable in situations where you know you will have late subscribers to\n * a stream that need access to previously emitted values.\n * This ability to replay values on subscription is what differentiates {@link share} and `shareReplay`.\n *\n * ## Reference counting\n *\n * By default `shareReplay` will use `refCount` of false, meaning that it will _not_ unsubscribe the\n * source when the reference counter drops to zero, i.e. the inner `ReplaySubject` will _not_ be unsubscribed\n * (and potentially run for ever).\n * This is the default as it is expected that `shareReplay` is often used to keep around expensive to setup\n * observables which we want to keep running instead of having to do the expensive setup again.\n *\n * As of RXJS version 6.4.0 a new overload signature was added to allow for manual control over what\n * happens when the operators internal reference counter drops to zero.\n * If `refCount` is true, the source will be unsubscribed from once the reference count drops to zero, i.e.\n * the inner `ReplaySubject` will be unsubscribed. All new subscribers will receive value emissions from a\n * new `ReplaySubject` which in turn will cause a new subscription to the source observable.\n *\n * ## Examples\n *\n * Example with a third subscriber coming late to the party\n *\n * ```ts\n * import { interval, take, shareReplay } from 'rxjs';\n *\n * const shared$ = interval(2000).pipe(\n * take(6),\n * shareReplay(3)\n * );\n *\n * shared$.subscribe(x => console.log('sub A: ', x));\n * shared$.subscribe(y => console.log('sub B: ', y));\n *\n * setTimeout(() => {\n * shared$.subscribe(y => console.log('sub C: ', y));\n * }, 11000);\n *\n * // Logs:\n * // (after ~2000 ms)\n * // sub A: 0\n * // sub B: 0\n * // (after ~4000 ms)\n * // sub A: 1\n * // sub B: 1\n * // (after ~6000 ms)\n * // sub A: 2\n * // sub B: 2\n * // (after ~8000 ms)\n * // sub A: 3\n * // sub B: 3\n * // (after ~10000 ms)\n * // sub A: 4\n * // sub B: 4\n * // (after ~11000 ms, sub C gets the last 3 values)\n * // sub C: 2\n * // sub C: 3\n * // sub C: 4\n * // (after ~12000 ms)\n * // sub A: 5\n * // sub B: 5\n * // sub C: 5\n * ```\n *\n * Example for `refCount` usage\n *\n * ```ts\n * import { Observable, tap, interval, shareReplay, take } from 'rxjs';\n *\n * const log = <T>(name: string, source: Observable<T>) => source.pipe(\n * tap({\n * subscribe: () => console.log(`${ name }: subscribed`),\n * next: value => console.log(`${ name }: ${ value }`),\n * complete: () => console.log(`${ name }: completed`),\n * finalize: () => console.log(`${ name }: unsubscribed`)\n * })\n * );\n *\n * const obs$ = log('source', interval(1000));\n *\n * const shared$ = log('shared', obs$.pipe(\n * shareReplay({ bufferSize: 1, refCount: true }),\n * take(2)\n * ));\n *\n * shared$.subscribe(x => console.log('sub A: ', x));\n * shared$.subscribe(y => console.log('sub B: ', y));\n *\n * // PRINTS:\n * // shared: subscribed <-- reference count = 1\n * // source: subscribed\n * // shared: subscribed <-- reference count = 2\n * // source: 0\n * // shared: 0\n * // sub A: 0\n * // shared: 0\n * // sub B: 0\n * // source: 1\n * // shared: 1\n * // sub A: 1\n * // shared: completed <-- take(2) completes the subscription for sub A\n * // shared: unsubscribed <-- reference count = 1\n * // shared: 1\n * // sub B: 1\n * // shared: completed <-- take(2) completes the subscription for sub B\n * // shared: unsubscribed <-- reference count = 0\n * // source: unsubscribed <-- replaySubject unsubscribes from source observable because the reference count dropped to 0 and refCount is true\n *\n * // In case of refCount being false, the unsubscribe is never called on the source and the source would keep on emitting, even if no subscribers\n * // are listening.\n * // source: 2\n * // source: 3\n * // source: 4\n * // ...\n * ```\n *\n * @see {@link publish}\n * @see {@link share}\n * @see {@link publishReplay}\n *\n * @param configOrBufferSize Maximum element count of the replay buffer or {@link ShareReplayConfig configuration}\n * object.\n * @param windowTime Maximum time length of the replay buffer in milliseconds.\n * @param scheduler Scheduler where connected observers within the selector function\n * will be invoked on.\n * @return A function that returns an Observable sequence that contains the\n * elements of a sequence produced by multicasting the source sequence within a\n * selector function.\n */\nexport function shareReplay<T>(\n configOrBufferSize?: ShareReplayConfig | number,\n windowTime?: number,\n scheduler?: SchedulerLike\n): MonoTypeOperatorFunction<T> {\n let bufferSize: number;\n let refCount = false;\n if (configOrBufferSize && typeof configOrBufferSize === 'object') {\n ({ bufferSize = Infinity, windowTime = Infinity, refCount = false, scheduler } = configOrBufferSize);\n } else {\n bufferSize = (configOrBufferSize ?? Infinity) as number;\n }\n return share<T>({\n connector: () => new ReplaySubject(bufferSize, windowTime, scheduler),\n resetOnError: true,\n resetOnComplete: false,\n resetOnRefCountZero: refCount,\n });\n}\n", "import { MonoTypeOperatorFunction } from '../types';\nimport { filter } from './filter';\n\n/**\n * Returns an Observable that skips the first `count` items emitted by the source Observable.\n *\n * \n *\n * Skips the values until the sent notifications are equal or less than provided skip count. It raises\n * an error if skip count is equal or more than the actual number of emits and source raises an error.\n *\n * ## Example\n *\n * Skip the values before the emission\n *\n * ```ts\n * import { interval, skip } from 'rxjs';\n *\n * // emit every half second\n * const source = interval(500);\n * // skip the first 10 emitted values\n * const result = source.pipe(skip(10));\n *\n * result.subscribe(value => console.log(value));\n * // output: 10...11...12...13...\n * ```\n *\n * @see {@link last}\n * @see {@link skipWhile}\n * @see {@link skipUntil}\n * @see {@link skipLast}\n *\n * @param {Number} count - The number of times, items emitted by source Observable should be skipped.\n * @return A function that returns an Observable that skips the first `count`\n * values emitted by the source Observable.\n */\nexport function skip<T>(count: number): MonoTypeOperatorFunction<T> {\n return filter((_, index) => count <= index);\n}\n", "import { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { noop } from '../util/noop';\n\n/**\n * Returns an Observable that skips items emitted by the source Observable until a second Observable emits an item.\n *\n * The `skipUntil` operator causes the observable stream to skip the emission of values until the passed in observable\n * emits the first value. This can be particularly useful in combination with user interactions, responses of HTTP\n * requests or waiting for specific times to pass by.\n *\n * \n *\n * Internally, the `skipUntil` operator subscribes to the passed in `notifier` `ObservableInput` (which gets converted\n * to an Observable) in order to recognize the emission of its first value. When `notifier` emits next, the operator\n * unsubscribes from it and starts emitting the values of the *source* observable until it completes or errors. It\n * will never let the *source* observable emit any values if the `notifier` completes or throws an error without\n * emitting a value before.\n *\n * ## Example\n *\n * In the following example, all emitted values of the interval observable are skipped until the user clicks anywhere\n * within the page\n *\n * ```ts\n * import { interval, fromEvent, skipUntil } from 'rxjs';\n *\n * const intervalObservable = interval(1000);\n * const click = fromEvent(document, 'click');\n *\n * const emitAfterClick = intervalObservable.pipe(\n * skipUntil(click)\n * );\n * // clicked at 4.6s. output: 5...6...7...8........ or\n * // clicked at 7.3s. output: 8...9...10..11.......\n * emitAfterClick.subscribe(value => console.log(value));\n * ```\n *\n * @see {@link last}\n * @see {@link skip}\n * @see {@link skipWhile}\n * @see {@link skipLast}\n *\n * @param notifier An `ObservableInput` that has to emit an item before the source Observable elements begin to\n * be mirrored by the resulting Observable.\n * @return A function that returns an Observable that skips items from the\n * source Observable until the `notifier` Observable emits an item, then emits the\n * remaining items.\n */\nexport function skipUntil<T>(notifier: ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let taking = false;\n\n const skipSubscriber = createOperatorSubscriber(\n subscriber,\n () => {\n skipSubscriber?.unsubscribe();\n taking = true;\n },\n noop\n );\n\n innerFrom(notifier).subscribe(skipSubscriber);\n\n source.subscribe(createOperatorSubscriber(subscriber, (value) => taking && subscriber.next(value)));\n });\n}\n", "import { concat } from '../observable/concat';\nimport { OperatorFunction, SchedulerLike, ValueFromArray } from '../types';\nimport { popScheduler } from '../util/args';\nimport { operate } from '../util/lift';\n\n// Devs are more likely to pass null or undefined than they are a scheduler\n// without accompanying values. To make things easier for (naughty) devs who\n// use the `strictNullChecks: false` TypeScript compiler option, these\n// overloads with explicit null and undefined values are included.\n\nexport function startWith<T>(value: null): OperatorFunction<T, T | null>;\nexport function startWith<T>(value: undefined): OperatorFunction<T, T | undefined>;\n\n/** @deprecated The `scheduler` parameter will be removed in v8. Use `scheduled` and `concatAll`. Details: https://rxjs.dev/deprecations/scheduler-argument */\nexport function startWith<T, A extends readonly unknown[] = T[]>(\n ...valuesAndScheduler: [...A, SchedulerLike]\n): OperatorFunction<T, T | ValueFromArray<A>>;\nexport function startWith<T, A extends readonly unknown[] = T[]>(...values: A): OperatorFunction<T, T | ValueFromArray<A>>;\n\n/**\n * Returns an observable that, at the moment of subscription, will synchronously emit all\n * values provided to this operator, then subscribe to the source and mirror all of its emissions\n * to subscribers.\n *\n * This is a useful way to know when subscription has occurred on an existing observable.\n *\n * <span class=\"informal\">First emits its arguments in order, and then any\n * emissions from the source.</span>\n *\n * \n *\n * ## Examples\n *\n * Emit a value when a timer starts.\n *\n * ```ts\n * import { timer, map, startWith } from 'rxjs';\n *\n * timer(1000)\n * .pipe(\n * map(() => 'timer emit'),\n * startWith('timer start')\n * )\n * .subscribe(x => console.log(x));\n *\n * // results:\n * // 'timer start'\n * // 'timer emit'\n * ```\n *\n * @param values Items you want the modified Observable to emit first.\n * @return A function that returns an Observable that synchronously emits\n * provided values before subscribing to the source Observable.\n *\n * @see {@link endWith}\n * @see {@link finalize}\n * @see {@link concat}\n */\nexport function startWith<T, D>(...values: D[]): OperatorFunction<T, T | D> {\n const scheduler = popScheduler(values);\n return operate((source, subscriber) => {\n // Here we can't pass `undefined` as a scheduler, because if we did, the\n // code inside of `concat` would be confused by the `undefined`, and treat it\n // like an invalid observable. So we have to split it two different ways.\n (scheduler ? concat(values, source, scheduler) : concat(values, source)).subscribe(subscriber);\n });\n}\n", "import { Subscriber } from '../Subscriber';\nimport { ObservableInput, OperatorFunction, ObservedValueOf } from '../types';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\n/* tslint:disable:max-line-length */\nexport function switchMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function switchMap<T, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: undefined\n): OperatorFunction<T, ObservedValueOf<O>>;\n/** @deprecated The `resultSelector` parameter will be removed in v8. Use an inner `map` instead. Details: https://rxjs.dev/deprecations/resultSelector */\nexport function switchMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector: (outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R\n): OperatorFunction<T, R>;\n/* tslint:enable:max-line-length */\n\n/**\n * Projects each source value to an Observable which is merged in the output\n * Observable, emitting values only from the most recently projected Observable.\n *\n * <span class=\"informal\">Maps each value to an Observable, then flattens all of\n * these inner Observables using {@link switchAll}.</span>\n *\n * \n *\n * Returns an Observable that emits items based on applying a function that you\n * supply to each item emitted by the source Observable, where that function\n * returns an (so-called \"inner\") Observable. Each time it observes one of these\n * inner Observables, the output Observable begins emitting the items emitted by\n * that inner Observable. When a new inner Observable is emitted, `switchMap`\n * stops emitting items from the earlier-emitted inner Observable and begins\n * emitting items from the new one. It continues to behave like this for\n * subsequent inner Observables.\n *\n * ## Example\n *\n * Generate new Observable according to source Observable values\n *\n * ```ts\n * import { of, switchMap } from 'rxjs';\n *\n * const switched = of(1, 2, 3).pipe(switchMap(x => of(x, x ** 2, x ** 3)));\n * switched.subscribe(x => console.log(x));\n * // outputs\n * // 1\n * // 1\n * // 1\n * // 2\n * // 4\n * // 8\n * // 3\n * // 9\n * // 27\n * ```\n *\n * Restart an interval Observable on every click event\n *\n * ```ts\n * import { fromEvent, switchMap, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(switchMap(() => interval(1000)));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link concatMap}\n * @see {@link exhaustMap}\n * @see {@link mergeMap}\n * @see {@link switchAll}\n * @see {@link switchMapTo}\n *\n * @param {function(value: T, index: number): ObservableInput} project A function\n * that, when applied to an item emitted by the source Observable, returns an\n * Observable.\n * @return A function that returns an Observable that emits the result of\n * applying the projection function (and the optional deprecated\n * `resultSelector`) to each item emitted by the source Observable and taking\n * only the values from the most recently projected inner Observable.\n */\nexport function switchMap<T, R, O extends ObservableInput<any>>(\n project: (value: T, index: number) => O,\n resultSelector?: (outerValue: T, innerValue: ObservedValueOf<O>, outerIndex: number, innerIndex: number) => R\n): OperatorFunction<T, ObservedValueOf<O> | R> {\n return operate((source, subscriber) => {\n let innerSubscriber: Subscriber<ObservedValueOf<O>> | null = null;\n let index = 0;\n // Whether or not the source subscription has completed\n let isComplete = false;\n\n // We only complete the result if the source is complete AND we don't have an active inner subscription.\n // This is called both when the source completes and when the inners complete.\n const checkComplete = () => isComplete && !innerSubscriber && subscriber.complete();\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n // Cancel the previous inner subscription if there was one\n innerSubscriber?.unsubscribe();\n let innerIndex = 0;\n const outerIndex = index++;\n // Start the next inner subscription\n innerFrom(project(value, outerIndex)).subscribe(\n (innerSubscriber = createOperatorSubscriber(\n subscriber,\n // When we get a new inner value, next it through. Note that this is\n // handling the deprecate result selector here. This is because with this architecture\n // it ends up being smaller than using the map operator.\n (innerValue) => subscriber.next(resultSelector ? resultSelector(value, innerValue, outerIndex, innerIndex++) : innerValue),\n () => {\n // The inner has completed. Null out the inner subscriber to\n // free up memory and to signal that we have no inner subscription\n // currently.\n innerSubscriber = null!;\n checkComplete();\n }\n ))\n );\n },\n () => {\n isComplete = true;\n checkComplete();\n }\n )\n );\n });\n}\n", "import { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { noop } from '../util/noop';\n\n/**\n * Emits the values emitted by the source Observable until a `notifier`\n * Observable emits a value.\n *\n * <span class=\"informal\">Lets values pass until a second Observable,\n * `notifier`, emits a value. Then, it completes.</span>\n *\n * \n *\n * `takeUntil` subscribes and begins mirroring the source Observable. It also\n * monitors a second Observable, `notifier` that you provide. If the `notifier`\n * emits a value, the output Observable stops mirroring the source Observable\n * and completes. If the `notifier` doesn't emit any value and completes\n * then `takeUntil` will pass all values.\n *\n * ## Example\n *\n * Tick every second until the first click happens\n *\n * ```ts\n * import { interval, fromEvent, takeUntil } from 'rxjs';\n *\n * const source = interval(1000);\n * const clicks = fromEvent(document, 'click');\n * const result = source.pipe(takeUntil(clicks));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link take}\n * @see {@link takeLast}\n * @see {@link takeWhile}\n * @see {@link skip}\n *\n * @param {Observable} notifier The Observable whose first emitted value will\n * cause the output Observable of `takeUntil` to stop emitting values from the\n * source Observable.\n * @return A function that returns an Observable that emits the values from the\n * source Observable until `notifier` emits its first value.\n */\nexport function takeUntil<T>(notifier: ObservableInput<any>): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n innerFrom(notifier).subscribe(createOperatorSubscriber(subscriber, () => subscriber.complete(), noop));\n !subscriber.closed && source.subscribe(subscriber);\n });\n}\n", "import { OperatorFunction, MonoTypeOperatorFunction, TruthyTypesOf } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\n\nexport function takeWhile<T>(predicate: BooleanConstructor, inclusive: true): MonoTypeOperatorFunction<T>;\nexport function takeWhile<T>(predicate: BooleanConstructor, inclusive: false): OperatorFunction<T, TruthyTypesOf<T>>;\nexport function takeWhile<T>(predicate: BooleanConstructor): OperatorFunction<T, TruthyTypesOf<T>>;\nexport function takeWhile<T, S extends T>(predicate: (value: T, index: number) => value is S): OperatorFunction<T, S>;\nexport function takeWhile<T, S extends T>(predicate: (value: T, index: number) => value is S, inclusive: false): OperatorFunction<T, S>;\nexport function takeWhile<T>(predicate: (value: T, index: number) => boolean, inclusive?: boolean): MonoTypeOperatorFunction<T>;\n\n/**\n * Emits values emitted by the source Observable so long as each value satisfies\n * the given `predicate`, and then completes as soon as this `predicate` is not\n * satisfied.\n *\n * <span class=\"informal\">Takes values from the source only while they pass the\n * condition given. When the first value does not satisfy, it completes.</span>\n *\n * \n *\n * `takeWhile` subscribes and begins mirroring the source Observable. Each value\n * emitted on the source is given to the `predicate` function which returns a\n * boolean, representing a condition to be satisfied by the source values. The\n * output Observable emits the source values until such time as the `predicate`\n * returns false, at which point `takeWhile` stops mirroring the source\n * Observable and completes the output Observable.\n *\n * ## Example\n *\n * Emit click events only while the clientX property is greater than 200\n *\n * ```ts\n * import { fromEvent, takeWhile } from 'rxjs';\n *\n * const clicks = fromEvent<PointerEvent>(document, 'click');\n * const result = clicks.pipe(takeWhile(ev => ev.clientX > 200));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link take}\n * @see {@link takeLast}\n * @see {@link takeUntil}\n * @see {@link skip}\n *\n * @param {function(value: T, index: number): boolean} predicate A function that\n * evaluates a value emitted by the source Observable and returns a boolean.\n * Also takes the (zero-based) index as the second argument.\n * @param {boolean} inclusive When set to `true` the value that caused\n * `predicate` to return `false` will also be emitted.\n * @return A function that returns an Observable that emits values from the\n * source Observable so long as each value satisfies the condition defined by\n * the `predicate`, then completes.\n */\nexport function takeWhile<T>(predicate: (value: T, index: number) => boolean, inclusive = false): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n let index = 0;\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n const result = predicate(value, index++);\n (result || inclusive) && subscriber.next(value);\n !result && subscriber.complete();\n })\n );\n });\n}\n", "import { MonoTypeOperatorFunction, Observer } from '../types';\nimport { isFunction } from '../util/isFunction';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { identity } from '../util/identity';\n\n/**\n * An extension to the {@link Observer} interface used only by the {@link tap} operator.\n *\n * It provides a useful set of callbacks a user can register to do side-effects in\n * cases other than what the usual {@link Observer} callbacks are\n * ({@link guide/glossary-and-semantics#next next},\n * {@link guide/glossary-and-semantics#error error} and/or\n * {@link guide/glossary-and-semantics#complete complete}).\n *\n * ## Example\n *\n * ```ts\n * import { fromEvent, switchMap, tap, interval, take } from 'rxjs';\n *\n * const source$ = fromEvent(document, 'click');\n * const result$ = source$.pipe(\n * switchMap((_, i) => i % 2 === 0\n * ? fromEvent(document, 'mousemove').pipe(\n * tap({\n * subscribe: () => console.log('Subscribed to the mouse move events after click #' + i),\n * unsubscribe: () => console.log('Mouse move events #' + i + ' unsubscribed'),\n * finalize: () => console.log('Mouse move events #' + i + ' finalized')\n * })\n * )\n * : interval(1_000).pipe(\n * take(5),\n * tap({\n * subscribe: () => console.log('Subscribed to the 1-second interval events after click #' + i),\n * unsubscribe: () => console.log('1-second interval events #' + i + ' unsubscribed'),\n * finalize: () => console.log('1-second interval events #' + i + ' finalized')\n * })\n * )\n * )\n * );\n *\n * const subscription = result$.subscribe({\n * next: console.log\n * });\n *\n * setTimeout(() => {\n * console.log('Unsubscribe after 60 seconds');\n * subscription.unsubscribe();\n * }, 60_000);\n * ```\n */\nexport interface TapObserver<T> extends Observer<T> {\n /**\n * The callback that `tap` operator invokes at the moment when the source Observable\n * gets subscribed to.\n */\n subscribe: () => void;\n /**\n * The callback that `tap` operator invokes when an explicit\n * {@link guide/glossary-and-semantics#unsubscription unsubscribe} happens. It won't get invoked on\n * `error` or `complete` events.\n */\n unsubscribe: () => void;\n /**\n * The callback that `tap` operator invokes when any kind of\n * {@link guide/glossary-and-semantics#finalization finalization} happens - either when\n * the source Observable `error`s or `complete`s or when it gets explicitly unsubscribed\n * by the user. There is no difference in using this callback or the {@link finalize}\n * operator, but if you're already using `tap` operator, you can use this callback\n * instead. You'd get the same result in either case.\n */\n finalize: () => void;\n}\nexport function tap<T>(observerOrNext?: Partial<TapObserver<T>> | ((value: T) => void)): MonoTypeOperatorFunction<T>;\n/** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\nexport function tap<T>(\n next?: ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n): MonoTypeOperatorFunction<T>;\n\n/**\n * Used to perform side-effects for notifications from the source observable\n *\n * <span class=\"informal\">Used when you want to affect outside state with a notification without altering the notification</span>\n *\n * \n *\n * Tap is designed to allow the developer a designated place to perform side effects. While you _could_ perform side-effects\n * inside of a `map` or a `mergeMap`, that would make their mapping functions impure, which isn't always a big deal, but will\n * make it so you can't do things like memoize those functions. The `tap` operator is designed solely for such side-effects to\n * help you remove side-effects from other operations.\n *\n * For any notification, next, error, or complete, `tap` will call the appropriate callback you have provided to it, via a function\n * reference, or a partial observer, then pass that notification down the stream.\n *\n * The observable returned by `tap` is an exact mirror of the source, with one exception: Any error that occurs -- synchronously -- in a handler\n * provided to `tap` will be emitted as an error from the returned observable.\n *\n * > Be careful! You can mutate objects as they pass through the `tap` operator's handlers.\n *\n * The most common use of `tap` is actually for debugging. You can place a `tap(console.log)` anywhere\n * in your observable `pipe`, log out the notifications as they are emitted by the source returned by the previous\n * operation.\n *\n * ## Examples\n *\n * Check a random number before it is handled. Below is an observable that will use a random number between 0 and 1,\n * and emit `'big'` or `'small'` depending on the size of that number. But we wanted to log what the original number\n * was, so we have added a `tap(console.log)`.\n *\n * ```ts\n * import { of, tap, map } from 'rxjs';\n *\n * of(Math.random()).pipe(\n * tap(console.log),\n * map(n => n > 0.5 ? 'big' : 'small')\n * ).subscribe(console.log);\n * ```\n *\n * Using `tap` to analyze a value and force an error. Below is an observable where in our system we only\n * want to emit numbers 3 or less we get from another source. We can force our observable to error\n * using `tap`.\n *\n * ```ts\n * import { of, tap } from 'rxjs';\n *\n * const source = of(1, 2, 3, 4, 5);\n *\n * source.pipe(\n * tap(n => {\n * if (n > 3) {\n * throw new TypeError(`Value ${ n } is greater than 3`);\n * }\n * })\n * )\n * .subscribe({ next: console.log, error: err => console.log(err.message) });\n * ```\n *\n * We want to know when an observable completes before moving on to the next observable. The system\n * below will emit a random series of `'X'` characters from 3 different observables in sequence. The\n * only way we know when one observable completes and moves to the next one, in this case, is because\n * we have added a `tap` with the side effect of logging to console.\n *\n * ```ts\n * import { of, concatMap, interval, take, map, tap } from 'rxjs';\n *\n * of(1, 2, 3).pipe(\n * concatMap(n => interval(1000).pipe(\n * take(Math.round(Math.random() * 10)),\n * map(() => 'X'),\n * tap({ complete: () => console.log(`Done with ${ n }`) })\n * ))\n * )\n * .subscribe(console.log);\n * ```\n *\n * @see {@link finalize}\n * @see {@link TapObserver}\n *\n * @param observerOrNext A next handler or partial observer\n * @param error An error handler\n * @param complete A completion handler\n * @return A function that returns an Observable identical to the source, but\n * runs the specified Observer or callback(s) for each item.\n */\nexport function tap<T>(\n observerOrNext?: Partial<TapObserver<T>> | ((value: T) => void) | null,\n error?: ((e: any) => void) | null,\n complete?: (() => void) | null\n): MonoTypeOperatorFunction<T> {\n // We have to check to see not only if next is a function,\n // but if error or complete were passed. This is because someone\n // could technically call tap like `tap(null, fn)` or `tap(null, null, fn)`.\n const tapObserver =\n isFunction(observerOrNext) || error || complete\n ? // tslint:disable-next-line: no-object-literal-type-assertion\n ({ next: observerOrNext as Exclude<typeof observerOrNext, Partial<TapObserver<T>>>, error, complete } as Partial<TapObserver<T>>)\n : observerOrNext;\n\n return tapObserver\n ? operate((source, subscriber) => {\n tapObserver.subscribe?.();\n let isUnsub = true;\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n tapObserver.next?.(value);\n subscriber.next(value);\n },\n () => {\n isUnsub = false;\n tapObserver.complete?.();\n subscriber.complete();\n },\n (err) => {\n isUnsub = false;\n tapObserver.error?.(err);\n subscriber.error(err);\n },\n () => {\n if (isUnsub) {\n tapObserver.unsubscribe?.();\n }\n tapObserver.finalize?.();\n }\n )\n );\n })\n : // Tap was called with no valid tap observer or handler\n // (e.g. `tap(null, null, null)` or `tap(null)` or `tap()`)\n // so we're going to just mirror the source.\n identity;\n}\n", "import { Subscription } from '../Subscription';\n\nimport { MonoTypeOperatorFunction, ObservableInput } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\n\n/**\n * An object interface used by {@link throttle} or {@link throttleTime} that ensure\n * configuration options of these operators.\n *\n * @see {@link throttle}\n * @see {@link throttleTime}\n */\nexport interface ThrottleConfig {\n /**\n * If `true`, the resulting Observable will emit the first value from the source\n * Observable at the **start** of the \"throttling\" process (when starting an\n * internal timer that prevents other emissions from the source to pass through).\n * If `false`, it will not emit the first value from the source Observable at the\n * start of the \"throttling\" process.\n *\n * If not provided, defaults to: `true`.\n */\n leading?: boolean;\n /**\n * If `true`, the resulting Observable will emit the last value from the source\n * Observable at the **end** of the \"throttling\" process (when ending an internal\n * timer that prevents other emissions from the source to pass through).\n * If `false`, it will not emit the last value from the source Observable at the\n * end of the \"throttling\" process.\n *\n * If not provided, defaults to: `false`.\n */\n trailing?: boolean;\n}\n\n/**\n * Emits a value from the source Observable, then ignores subsequent source\n * values for a duration determined by another Observable, then repeats this\n * process.\n *\n * <span class=\"informal\">It's like {@link throttleTime}, but the silencing\n * duration is determined by a second Observable.</span>\n *\n * \n *\n * `throttle` emits the source Observable values on the output Observable\n * when its internal timer is disabled, and ignores source values when the timer\n * is enabled. Initially, the timer is disabled. As soon as the first source\n * value arrives, it is forwarded to the output Observable, and then the timer\n * is enabled by calling the `durationSelector` function with the source value,\n * which returns the \"duration\" Observable. When the duration Observable emits a\n * value, the timer is disabled, and this process repeats for the\n * next source value.\n *\n * ## Example\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, throttle, interval } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(throttle(() => interval(1000)));\n *\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link audit}\n * @see {@link debounce}\n * @see {@link delayWhen}\n * @see {@link sample}\n * @see {@link throttleTime}\n *\n * @param durationSelector A function that receives a value from the source\n * Observable, for computing the silencing duration for each source value,\n * returned as an `ObservableInput`.\n * @param config A configuration object to define `leading` and `trailing`\n * behavior. Defaults to `{ leading: true, trailing: false }`.\n * @return A function that returns an Observable that performs the throttle\n * operation to limit the rate of emissions from the source.\n */\nexport function throttle<T>(durationSelector: (value: T) => ObservableInput<any>, config?: ThrottleConfig): MonoTypeOperatorFunction<T> {\n return operate((source, subscriber) => {\n const { leading = true, trailing = false } = config ?? {};\n let hasValue = false;\n let sendValue: T | null = null;\n let throttled: Subscription | null = null;\n let isComplete = false;\n\n const endThrottling = () => {\n throttled?.unsubscribe();\n throttled = null;\n if (trailing) {\n send();\n isComplete && subscriber.complete();\n }\n };\n\n const cleanupThrottling = () => {\n throttled = null;\n isComplete && subscriber.complete();\n };\n\n const startThrottle = (value: T) =>\n (throttled = innerFrom(durationSelector(value)).subscribe(createOperatorSubscriber(subscriber, endThrottling, cleanupThrottling)));\n\n const send = () => {\n if (hasValue) {\n // Ensure we clear out our value and hasValue flag\n // before we emit, otherwise reentrant code can cause\n // issues here.\n hasValue = false;\n const value = sendValue!;\n sendValue = null;\n // Emit the value.\n subscriber.next(value);\n !isComplete && startThrottle(value);\n }\n };\n\n source.subscribe(\n createOperatorSubscriber(\n subscriber,\n // Regarding the presence of throttled.closed in the following\n // conditions, if a synchronous duration selector is specified - weird,\n // but legal - an already-closed subscription will be assigned to\n // throttled, so the subscription's closed property needs to be checked,\n // too.\n (value) => {\n hasValue = true;\n sendValue = value;\n !(throttled && !throttled.closed) && (leading ? send() : startThrottle(value));\n },\n () => {\n isComplete = true;\n !(trailing && hasValue && throttled && !throttled.closed) && subscriber.complete();\n }\n )\n );\n });\n}\n", "import { asyncScheduler } from '../scheduler/async';\nimport { throttle, ThrottleConfig } from './throttle';\nimport { MonoTypeOperatorFunction, SchedulerLike } from '../types';\nimport { timer } from '../observable/timer';\n\n/**\n * Emits a value from the source Observable, then ignores subsequent source\n * values for `duration` milliseconds, then repeats this process.\n *\n * <span class=\"informal\">Lets a value pass, then ignores source values for the\n * next `duration` milliseconds.</span>\n *\n * \n *\n * `throttleTime` emits the source Observable values on the output Observable\n * when its internal timer is disabled, and ignores source values when the timer\n * is enabled. Initially, the timer is disabled. As soon as the first source\n * value arrives, it is forwarded to the output Observable, and then the timer\n * is enabled. After `duration` milliseconds (or the time unit determined\n * internally by the optional `scheduler`) has passed, the timer is disabled,\n * and this process repeats for the next source value. Optionally takes a\n * {@link SchedulerLike} for managing timers.\n *\n * ## Examples\n *\n * ### Limit click rate\n *\n * Emit clicks at a rate of at most one click per second\n *\n * ```ts\n * import { fromEvent, throttleTime } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const result = clicks.pipe(throttleTime(1000));\n *\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link auditTime}\n * @see {@link debounceTime}\n * @see {@link delay}\n * @see {@link sampleTime}\n * @see {@link throttle}\n *\n * @param duration Time to wait before emitting another value after\n * emitting the last value, measured in milliseconds or the time unit determined\n * internally by the optional `scheduler`.\n * @param scheduler The {@link SchedulerLike} to use for\n * managing the timers that handle the throttling. Defaults to {@link asyncScheduler}.\n * @param config A configuration object to define `leading` and\n * `trailing` behavior. Defaults to `{ leading: true, trailing: false }`.\n * @return A function that returns an Observable that performs the throttle\n * operation to limit the rate of emissions from the source.\n */\nexport function throttleTime<T>(\n duration: number,\n scheduler: SchedulerLike = asyncScheduler,\n config?: ThrottleConfig\n): MonoTypeOperatorFunction<T> {\n const duration$ = timer(duration, scheduler);\n return throttle(() => duration$, config);\n}\n", "import { OperatorFunction, ObservableInputTuple } from '../types';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nimport { identity } from '../util/identity';\nimport { noop } from '../util/noop';\nimport { popResultSelector } from '../util/args';\n\nexport function withLatestFrom<T, O extends unknown[]>(...inputs: [...ObservableInputTuple<O>]): OperatorFunction<T, [T, ...O]>;\n\nexport function withLatestFrom<T, O extends unknown[], R>(\n ...inputs: [...ObservableInputTuple<O>, (...value: [T, ...O]) => R]\n): OperatorFunction<T, R>;\n\n/**\n * Combines the source Observable with other Observables to create an Observable\n * whose values are calculated from the latest values of each, only when the\n * source emits.\n *\n * <span class=\"informal\">Whenever the source Observable emits a value, it\n * computes a formula using that value plus the latest values from other input\n * Observables, then emits the output of that formula.</span>\n *\n * \n *\n * `withLatestFrom` combines each value from the source Observable (the\n * instance) with the latest values from the other input Observables only when\n * the source emits a value, optionally using a `project` function to determine\n * the value to be emitted on the output Observable. All input Observables must\n * emit at least one value before the output Observable will emit a value.\n *\n * ## Example\n *\n * On every click event, emit an array with the latest timer event plus the click event\n *\n * ```ts\n * import { fromEvent, interval, withLatestFrom } from 'rxjs';\n *\n * const clicks = fromEvent(document, 'click');\n * const timer = interval(1000);\n * const result = clicks.pipe(withLatestFrom(timer));\n * result.subscribe(x => console.log(x));\n * ```\n *\n * @see {@link combineLatest}\n *\n * @param {ObservableInput} other An input Observable to combine with the source\n * Observable. More than one input Observables may be given as argument.\n * @param {Function} [project] Projection function for combining values\n * together. Receives all values in order of the Observables passed, where the\n * first parameter is a value from the source Observable. (e.g.\n * `a.pipe(withLatestFrom(b, c), map(([a1, b1, c1]) => a1 + b1 + c1))`). If this is not\n * passed, arrays will be emitted on the output Observable.\n * @return A function that returns an Observable of projected values from the\n * most recent values from each input Observable, or an array of the most\n * recent values from each input Observable.\n */\nexport function withLatestFrom<T, R>(...inputs: any[]): OperatorFunction<T, R | any[]> {\n const project = popResultSelector(inputs) as ((...args: any[]) => R) | undefined;\n\n return operate((source, subscriber) => {\n const len = inputs.length;\n const otherValues = new Array(len);\n // An array of whether or not the other sources have emitted. Matched with them by index.\n // TODO: At somepoint, we should investigate the performance implications here, and look\n // into using a `Set()` and checking the `size` to see if we're ready.\n let hasValue = inputs.map(() => false);\n // Flipped true when we have at least one value from all other sources and\n // we are ready to start emitting values.\n let ready = false;\n\n // Other sources. Note that here we are not checking `subscriber.closed`,\n // this causes all inputs to be subscribed to, even if nothing can be emitted\n // from them. This is an important distinction because subscription constitutes\n // a side-effect.\n for (let i = 0; i < len; i++) {\n innerFrom(inputs[i]).subscribe(\n createOperatorSubscriber(\n subscriber,\n (value) => {\n otherValues[i] = value;\n if (!ready && !hasValue[i]) {\n // If we're not ready yet, flag to show this observable has emitted.\n hasValue[i] = true;\n // Intentionally terse code.\n // If all of our other observables have emitted, set `ready` to `true`,\n // so we know we can start emitting values, then clean up the `hasValue` array,\n // because we don't need it anymore.\n (ready = hasValue.every(identity)) && (hasValue = null!);\n }\n },\n // Completing one of the other sources has\n // no bearing on the completion of our result.\n noop\n )\n );\n }\n\n // Source subscription\n source.subscribe(\n createOperatorSubscriber(subscriber, (value) => {\n if (ready) {\n // We have at least one value from the other sources. Go ahead and emit.\n const values = [value, ...otherValues];\n subscriber.next(project ? project(...values) : values);\n }\n })\n );\n });\n}\n", "import { zip as zipStatic } from '../observable/zip';\nimport { ObservableInput, ObservableInputTuple, OperatorFunction, Cons } from '../types';\nimport { operate } from '../util/lift';\n\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[]>(otherInputs: [...ObservableInputTuple<A>]): OperatorFunction<T, Cons<T, A>>;\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[], R>(\n otherInputsAndProject: [...ObservableInputTuple<A>],\n project: (...values: Cons<T, A>) => R\n): OperatorFunction<T, R>;\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[]>(...otherInputs: [...ObservableInputTuple<A>]): OperatorFunction<T, Cons<T, A>>;\n/** @deprecated Replaced with {@link zipWith}. Will be removed in v8. */\nexport function zip<T, A extends readonly unknown[], R>(\n ...otherInputsAndProject: [...ObservableInputTuple<A>, (...values: Cons<T, A>) => R]\n): OperatorFunction<T, R>;\n\n/**\n * @deprecated Replaced with {@link zipWith}. Will be removed in v8.\n */\nexport function zip<T, R>(...sources: Array<ObservableInput<any> | ((...values: Array<any>) => R)>): OperatorFunction<T, any> {\n return operate((source, subscriber) => {\n zipStatic(source as ObservableInput<any>, ...(sources as Array<ObservableInput<any>>)).subscribe(subscriber);\n });\n}\n", "import { ObservableInputTuple, OperatorFunction, Cons } from '../types';\nimport { zip } from './zip';\n\n/**\n * Subscribes to the source, and the observable inputs provided as arguments, and combines their values, by index, into arrays.\n *\n * What is meant by \"combine by index\": The first value from each will be made into a single array, then emitted,\n * then the second value from each will be combined into a single array and emitted, then the third value\n * from each will be combined into a single array and emitted, and so on.\n *\n * This will continue until it is no longer able to combine values of the same index into an array.\n *\n * After the last value from any one completed source is emitted in an array, the resulting observable will complete,\n * as there is no way to continue \"zipping\" values together by index.\n *\n * Use-cases for this operator are limited. There are memory concerns if one of the streams is emitting\n * values at a much faster rate than the others. Usage should likely be limited to streams that emit\n * at a similar pace, or finite streams of known length.\n *\n * In many cases, authors want `combineLatestWith` and not `zipWith`.\n *\n * @param otherInputs other observable inputs to collate values from.\n * @return A function that returns an Observable that emits items by index\n * combined from the source Observable and provided Observables, in form of an\n * array.\n */\nexport function zipWith<T, A extends readonly unknown[]>(...otherInputs: [...ObservableInputTuple<A>]): OperatorFunction<T, Cons<T, A>> {\n return zip(...otherInputs);\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n ReplaySubject,\n Subject,\n fromEvent\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch document\n *\n * Documents are implemented as subjects, so all downstream observables are\n * automatically updated when a new document is emitted.\n *\n * @returns Document subject\n */\nexport function watchDocument(): Subject<Document> {\n const document$ = new ReplaySubject<Document>(1)\n fromEvent(document, \"DOMContentLoaded\", { once: true })\n .subscribe(() => document$.next(document))\n\n /* Return document */\n return document$\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve all elements matching the query selector\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Elements\n */\nexport function getElements<T extends keyof HTMLElementTagNameMap>(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T][]\n\nexport function getElements<T extends HTMLElement>(\n selector: string, node?: ParentNode\n): T[]\n\nexport function getElements<T extends HTMLElement>(\n selector: string, node: ParentNode = document\n): T[] {\n return Array.from(node.querySelectorAll<T>(selector))\n}\n\n/**\n * Retrieve an element matching a query selector or throw a reference error\n *\n * Note that this function assumes that the element is present. If unsure if an\n * element is existent, use the `getOptionalElement` function instead.\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Element\n */\nexport function getElement<T extends keyof HTMLElementTagNameMap>(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T]\n\nexport function getElement<T extends HTMLElement>(\n selector: string, node?: ParentNode\n): T\n\nexport function getElement<T extends HTMLElement>(\n selector: string, node: ParentNode = document\n): T {\n const el = getOptionalElement<T>(selector, node)\n if (typeof el === \"undefined\")\n throw new ReferenceError(\n `Missing element: expected \"${selector}\" to be present`\n )\n\n /* Return element */\n return el\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Retrieve an optional element matching the query selector\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Element or nothing\n */\nexport function getOptionalElement<T extends keyof HTMLElementTagNameMap>(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T] | undefined\n\nexport function getOptionalElement<T extends HTMLElement>(\n selector: string, node?: ParentNode\n): T | undefined\n\nexport function getOptionalElement<T extends HTMLElement>(\n selector: string, node: ParentNode = document\n): T | undefined {\n return node.querySelector<T>(selector) || undefined\n}\n\n/**\n * Retrieve the currently active element\n *\n * @returns Element or nothing\n */\nexport function getActiveElement(): HTMLElement | undefined {\n return (\n document.activeElement?.shadowRoot?.activeElement as HTMLElement ??\n document.activeElement as HTMLElement ??\n undefined\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n debounceTime,\n distinctUntilChanged,\n fromEvent,\n map,\n merge,\n shareReplay,\n startWith\n} from \"rxjs\"\n\nimport { getActiveElement } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Focus observable\n *\n * Previously, this observer used `focus` and `blur` events to determine whether\n * an element is focused, but this doesn't work if there are focusable elements\n * within the elements itself. A better solutions are `focusin` and `focusout`\n * events, which bubble up the tree and allow for more fine-grained control.\n *\n * `debounceTime` is necessary, because when a focus change happens inside an\n * element, the observable would first emit `false` and then `true` again.\n */\nconst observer$ = merge(\n fromEvent(document.body, \"focusin\"),\n fromEvent(document.body, \"focusout\")\n)\n .pipe(\n debounceTime(1),\n startWith(undefined),\n map(() => getActiveElement() || document.body),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element focus\n *\n * @param el - Element\n *\n * @returns Element focus observable\n */\nexport function watchElementFocus(\n el: HTMLElement\n): Observable<boolean> {\n return observer$\n .pipe(\n map(active => el.contains(active)),\n distinctUntilChanged()\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n debounce,\n defer,\n fromEvent,\n identity,\n map,\n merge,\n startWith,\n timer\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element hover\n *\n * The second parameter allows to specify a timeout in milliseconds after which\n * the hover state will be reset to `false`. This is useful for tooltips which\n * should disappear after a certain amount of time, in order to allow the user\n * to move the cursor from the host to the tooltip.\n *\n * @param el - Element\n * @param timeout - Timeout\n *\n * @returns Element hover observable\n */\nexport function watchElementHover(\n el: HTMLElement, timeout?: number\n): Observable<boolean> {\n return defer(() => merge(\n fromEvent(el, \"mouseenter\").pipe(map(() => true)),\n fromEvent(el, \"mouseleave\").pipe(map(() => false))\n )\n .pipe(\n timeout ? debounce(active => timer(+!active * timeout)) : identity,\n startWith(el.matches(\":hover\"))\n )\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { JSX as JSXInternal } from \"preact\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * HTML attributes\n */\ntype Attributes =\n & JSXInternal.HTMLAttributes\n & JSXInternal.SVGAttributes\n & Record<string, any>\n\n/**\n * Child element\n */\ntype Child =\n | ChildNode\n | HTMLElement\n | Text\n | string\n | number\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Append a child node to an element\n *\n * @param el - Element\n * @param child - Child node(s)\n */\nfunction appendChild(el: HTMLElement, child: Child | Child[]): void {\n\n /* Handle primitive types (including raw HTML) */\n if (typeof child === \"string\" || typeof child === \"number\") {\n el.innerHTML += child.toString()\n\n /* Handle nodes */\n } else if (child instanceof Node) {\n el.appendChild(child)\n\n /* Handle nested children */\n } else if (Array.isArray(child)) {\n for (const node of child)\n appendChild(el, node)\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * JSX factory\n *\n * @template T - Element type\n *\n * @param tag - HTML tag\n * @param attributes - HTML attributes\n * @param children - Child elements\n *\n * @returns Element\n */\nexport function h<T extends keyof HTMLElementTagNameMap>(\n tag: T, attributes?: Attributes | null, ...children: Child[]\n): HTMLElementTagNameMap[T]\n\nexport function h<T extends h.JSX.Element>(\n tag: string, attributes?: Attributes | null, ...children: Child[]\n): T\n\nexport function h<T extends h.JSX.Element>(\n tag: string, attributes?: Attributes | null, ...children: Child[]\n): T {\n const el = document.createElement(tag)\n\n /* Set attributes, if any */\n if (attributes)\n for (const attr of Object.keys(attributes)) {\n if (typeof attributes[attr] === \"undefined\")\n continue\n\n /* Set default attribute or boolean */\n if (typeof attributes[attr] !== \"boolean\")\n el.setAttribute(attr, attributes[attr])\n else\n el.setAttribute(attr, \"\")\n }\n\n /* Append child nodes */\n for (const child of children)\n appendChild(el, child)\n\n /* Return element */\n return el as T\n}\n\n/* ----------------------------------------------------------------------------\n * Namespace\n * ------------------------------------------------------------------------- */\n\nexport declare namespace h {\n namespace JSX {\n type Element = HTMLElement\n type IntrinsicElements = JSXInternal.IntrinsicElements\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Round a number for display with repository facts\n *\n * This is a reverse-engineered version of GitHub's weird rounding algorithm\n * for stars, forks and all other numbers. While all numbers below `1,000` are\n * returned as-is, bigger numbers are converted to fixed numbers:\n *\n * - `1,049` => `1k`\n * - `1,050` => `1.1k`\n * - `1,949` => `1.9k`\n * - `1,950` => `2k`\n *\n * @param value - Original value\n *\n * @returns Rounded value\n */\nexport function round(value: number): string {\n if (value > 999) {\n const digits = +((value - 950) % 1000 > 99)\n return `${((value + 0.000001) / 1000).toFixed(digits)}k`\n } else {\n return value.toString()\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n defer,\n finalize,\n fromEvent,\n map,\n merge,\n switchMap,\n take,\n throwError\n} from \"rxjs\"\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create and load a `script` element\n *\n * This function returns an observable that will emit when the script was\n * successfully loaded, or throw an error if it wasn't.\n *\n * @param src - Script URL\n *\n * @returns Script observable\n */\nexport function watchScript(src: string): Observable<void> {\n const script = h(\"script\", { src })\n return defer(() => {\n document.head.appendChild(script)\n return merge(\n fromEvent(script, \"load\"),\n fromEvent(script, \"error\")\n .pipe(\n switchMap(() => (\n throwError(() => new ReferenceError(`Invalid script: ${src}`))\n ))\n )\n )\n .pipe(\n map(() => undefined),\n finalize(() => document.head.removeChild(script)),\n take(1)\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n Subject,\n defer,\n filter,\n finalize,\n map,\n merge,\n of,\n shareReplay,\n startWith,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { watchScript } from \"../../../script\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Element offset\n */\nexport interface ElementSize {\n width: number /* Element width */\n height: number /* Element height */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Resize observer entry subject\n */\nconst entry$ = new Subject<ResizeObserverEntry>()\n\n/**\n * Resize observer observable\n *\n * This observable will create a `ResizeObserver` on the first subscription\n * and will automatically terminate it when there are no more subscribers.\n * It's quite important to centralize observation in a single `ResizeObserver`,\n * as the performance difference can be quite dramatic, as the link shows.\n *\n * If the browser doesn't have a `ResizeObserver` implementation available, a\n * polyfill is automatically downloaded from unpkg.com. This is also compatible\n * with the built-in privacy plugin, which will download the polyfill and put\n * it alongside the built site for self-hosting.\n *\n * @see https://bit.ly/3iIYfEm - Google Groups on performance\n */\nconst observer$ = defer(() => (\n typeof ResizeObserver === \"undefined\"\n ? watchScript(\"https://unpkg.com/resize-observer-polyfill\")\n : of(undefined)\n))\n .pipe(\n map(() => new ResizeObserver(entries => (\n entries.forEach(entry => entry$.next(entry))\n ))),\n switchMap(observer => merge(NEVER, of(observer)).pipe(\n finalize(() => observer.disconnect())\n )),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element size\n *\n * @param el - Element\n *\n * @returns Element size\n */\nexport function getElementSize(\n el: HTMLElement\n): ElementSize {\n return {\n width: el.offsetWidth,\n height: el.offsetHeight\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element size\n *\n * This function returns an observable that subscribes to a single internal\n * instance of `ResizeObserver` upon subscription, and emit resize events until\n * termination. Note that this function should not be called with the same\n * element twice, as the first unsubscription will terminate observation.\n *\n * Sadly, we can't use the `DOMRect` objects returned by the observer, because\n * we need the emitted values to be consistent with `getElementSize`, which will\n * return the used values (rounded) and not actual values (unrounded). Thus, we\n * use the `offset*` properties. See the linked GitHub issue.\n *\n * @see https://bit.ly/3m0k3he - GitHub issue\n *\n * @param el - Element\n *\n * @returns Element size observable\n */\nexport function watchElementSize(\n el: HTMLElement\n): Observable<ElementSize> {\n\n // Compute target element - since inline elements cannot be observed by the\n // current `ResizeObserver` implementation as provided by browsers, we need\n // to determine the first containing parent element and use that one as a\n // target, while we always compute the actual size from the element.\n let target = el\n while (target.clientWidth === 0)\n if (target.parentElement)\n target = target.parentElement\n else\n break\n\n // Observe target element and recompute element size on resize - as described\n // above, the target element is not necessarily the element of interest\n return observer$.pipe(\n tap(observer => observer.observe(target)),\n switchMap(observer => entry$.pipe(\n filter(entry => entry.target === target),\n finalize(() => observer.unobserve(target))\n )),\n map(() => getElementSize(el)),\n startWith(getElementSize(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ElementSize } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element content size (= scroll width and height)\n *\n * @param el - Element\n *\n * @returns Element content size\n */\nexport function getElementContentSize(\n el: HTMLElement\n): ElementSize {\n return {\n width: el.scrollWidth,\n height: el.scrollHeight\n }\n}\n\n/**\n * Retrieve the overflowing container of an element, if any\n *\n * @param el - Element\n *\n * @returns Overflowing container or nothing\n */\nexport function getElementContainer(\n el: HTMLElement\n): HTMLElement | undefined {\n let parent = el.parentElement\n while (parent)\n if (\n el.scrollWidth <= parent.scrollWidth &&\n el.scrollHeight <= parent.scrollHeight\n )\n parent = (el = parent).parentElement\n else\n break\n\n /* Return overflowing container */\n return parent ? el : undefined\n}\n\n/**\n * Retrieve all overflowing containers of an element, if any\n *\n * Note that this function has a slightly different behavior, so we should at\n * some point consider refactoring how overflowing containers are handled.\n *\n * @param el - Element\n *\n * @returns Overflowing containers\n */\nexport function getElementContainers(\n el: HTMLElement\n): HTMLElement[] {\n const containers: HTMLElement[] = []\n\n // Walk up the DOM tree until we find an overflowing container\n let parent = el.parentElement\n while (parent) {\n if (\n el.clientWidth > parent.clientWidth ||\n el.clientHeight > parent.clientHeight\n )\n containers.push(parent)\n\n // Continue with parent element\n parent = (el = parent).parentElement\n }\n\n // If the page is short, the body might not be overflowing and there might be\n // no other containers, which is why we need to make sure the body is present\n if (containers.length === 0)\n containers.push(document.documentElement)\n\n // Return overflowing containers\n return containers\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n animationFrameScheduler,\n auditTime,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\nimport { watchElementSize } from \"../../size\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Element offset\n */\nexport interface ElementOffset {\n x: number /* Horizontal offset */\n y: number /* Vertical offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element offset\n *\n * @param el - Element\n *\n * @returns Element offset\n */\nexport function getElementOffset(\n el: HTMLElement\n): ElementOffset {\n return {\n x: el.offsetLeft,\n y: el.offsetTop\n }\n}\n\n/**\n * Retrieve absolute element offset\n *\n * @param el - Element\n *\n * @returns Element offset\n */\nexport function getElementOffsetAbsolute(\n el: HTMLElement\n): ElementOffset {\n const rect = el.getBoundingClientRect()\n return {\n x: rect.x + window.scrollX,\n y: rect.y + window.scrollY\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element offset\n *\n * @param el - Element\n *\n * @returns Element offset observable\n */\nexport function watchElementOffset(\n el: HTMLElement\n): Observable<ElementOffset> {\n return merge(\n fromEvent(window, \"load\"),\n fromEvent(window, \"resize\")\n )\n .pipe(\n auditTime(0, animationFrameScheduler),\n map(() => getElementOffset(el)),\n startWith(getElementOffset(el))\n )\n}\n\n/**\n * Watch absolute element offset\n *\n * @param el - Element\n *\n * @returns Element offset observable\n */\nexport function watchElementOffsetAbsolute(\n el: HTMLElement\n): Observable<ElementOffset> {\n return merge(\n watchElementOffset(el),\n watchElementSize(document.body) // @todo find a better way for this\n )\n .pipe(\n map(() => getElementOffsetAbsolute(el)),\n startWith(getElementOffsetAbsolute(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n animationFrameScheduler,\n auditTime,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\nimport { ElementOffset } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element content offset (= scroll offset)\n *\n * @param el - Element\n *\n * @returns Element content offset\n */\nexport function getElementContentOffset(\n el: HTMLElement\n): ElementOffset {\n return {\n x: el.scrollLeft,\n y: el.scrollTop\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element content offset\n *\n * @param el - Element\n *\n * @returns Element content offset observable\n */\nexport function watchElementContentOffset(\n el: HTMLElement\n): Observable<ElementOffset> {\n return merge(\n fromEvent(el, \"scroll\"),\n fromEvent(window, \"scroll\"),\n fromEvent(window, \"resize\")\n )\n .pipe(\n auditTime(0, animationFrameScheduler),\n map(() => getElementContentOffset(el)),\n startWith(getElementContentOffset(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n Subject,\n defer,\n distinctUntilChanged,\n filter,\n finalize,\n map,\n merge,\n of,\n shareReplay,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport {\n getElementContentSize,\n getElementSize,\n watchElementContentOffset\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Intersection observer entry subject\n */\nconst entry$ = new Subject<IntersectionObserverEntry>()\n\n/**\n * Intersection observer observable\n *\n * This observable will create an `IntersectionObserver` on first subscription\n * and will automatically terminate it when there are no more subscribers.\n *\n * @see https://bit.ly/3iIYfEm - Google Groups on performance\n */\nconst observer$ = defer(() => of(\n new IntersectionObserver(entries => {\n for (const entry of entries)\n entry$.next(entry)\n }, {\n threshold: 0\n })\n))\n .pipe(\n switchMap(observer => merge(NEVER, of(observer))\n .pipe(\n finalize(() => observer.disconnect())\n )\n ),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element visibility\n *\n * @param el - Element\n *\n * @returns Element visibility observable\n */\nexport function watchElementVisibility(\n el: HTMLElement\n): Observable<boolean> {\n return observer$\n .pipe(\n tap(observer => observer.observe(el)),\n switchMap(observer => entry$\n .pipe(\n filter(({ target }) => target === el),\n finalize(() => observer.unobserve(el)),\n map(({ isIntersecting }) => isIntersecting)\n )\n )\n )\n}\n\n/**\n * Watch element boundary\n *\n * This function returns an observable which emits whether the bottom content\n * boundary (= scroll offset) of an element is within a certain threshold.\n *\n * @param el - Element\n * @param threshold - Threshold\n *\n * @returns Element boundary observable\n */\nexport function watchElementBoundary(\n el: HTMLElement, threshold = 16\n): Observable<boolean> {\n return watchElementContentOffset(el)\n .pipe(\n map(({ y }) => {\n const visible = getElementSize(el)\n const content = getElementContentSize(el)\n return y >= (\n content.height - visible.height - threshold\n )\n }),\n distinctUntilChanged()\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n startWith\n} from \"rxjs\"\n\nimport { getElement } from \"../element\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Toggle\n */\nexport type Toggle =\n | \"drawer\" /* Toggle for drawer */\n | \"search\" /* Toggle for search */\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Toggle map\n */\nconst toggles: Record<Toggle, HTMLInputElement> = {\n drawer: getElement(\"[data-md-toggle=drawer]\"),\n search: getElement(\"[data-md-toggle=search]\")\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve the value of a toggle\n *\n * @param name - Toggle\n *\n * @returns Toggle value\n */\nexport function getToggle(name: Toggle): boolean {\n return toggles[name].checked\n}\n\n/**\n * Set toggle\n *\n * Simulating a click event seems to be the most cross-browser compatible way\n * of changing the value while also emitting a `change` event. Before, Material\n * used `CustomEvent` to programmatically change the value of a toggle, but this\n * is a much simpler and cleaner solution which doesn't require a polyfill.\n *\n * @param name - Toggle\n * @param value - Toggle value\n */\nexport function setToggle(name: Toggle, value: boolean): void {\n if (toggles[name].checked !== value)\n toggles[name].click()\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch toggle\n *\n * @param name - Toggle\n *\n * @returns Toggle value observable\n */\nexport function watchToggle(name: Toggle): Observable<boolean> {\n const el = toggles[name]\n return fromEvent(el, \"change\")\n .pipe(\n map(() => el.checked),\n startWith(el.checked)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n filter,\n fromEvent,\n map,\n merge,\n share,\n startWith,\n switchMap\n} from \"rxjs\"\n\nimport { getActiveElement } from \"../element\"\nimport { getToggle } from \"../toggle\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Keyboard mode\n */\nexport type KeyboardMode =\n | \"global\" /* Global */\n | \"search\" /* Search is open */\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Keyboard\n */\nexport interface Keyboard {\n mode: KeyboardMode /* Keyboard mode */\n type: string /* Key type */\n claim(): void /* Key claim */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Check whether an element may receive keyboard input\n *\n * @param el - Element\n * @param type - Key type\n *\n * @returns Test result\n */\nfunction isSusceptibleToKeyboard(\n el: HTMLElement, type: string\n): boolean {\n switch (el.constructor) {\n\n /* Input elements */\n case HTMLInputElement:\n /* @ts-expect-error - omit unnecessary type cast */\n if (el.type === \"radio\")\n return /^Arrow/.test(type)\n else\n return true\n\n /* Select element and textarea */\n case HTMLSelectElement:\n case HTMLTextAreaElement:\n return true\n\n /* Everything else */\n default:\n return el.isContentEditable\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch composition events\n *\n * @returns Composition observable\n */\nexport function watchComposition(): Observable<boolean> {\n return merge(\n fromEvent(window, \"compositionstart\").pipe(map(() => true)),\n fromEvent(window, \"compositionend\").pipe(map(() => false))\n )\n .pipe(\n startWith(false)\n )\n}\n\n/**\n * Watch keyboard\n *\n * @returns Keyboard observable\n */\nexport function watchKeyboard(): Observable<Keyboard> {\n const keyboard$ = fromEvent<KeyboardEvent>(window, \"keydown\")\n .pipe(\n filter(ev => !(ev.metaKey || ev.ctrlKey)),\n map(ev => ({\n mode: getToggle(\"search\") ? \"search\" : \"global\",\n type: ev.key,\n claim() {\n ev.preventDefault()\n ev.stopPropagation()\n }\n } as Keyboard)),\n filter(({ mode, type }) => {\n if (mode === \"global\") {\n const active = getActiveElement()\n if (typeof active !== \"undefined\")\n return !isSusceptibleToKeyboard(active, type)\n }\n return true\n }),\n share()\n )\n\n /* Don't emit during composition events - see https://bit.ly/3te3Wl8 */\n return watchComposition()\n .pipe(\n switchMap(active => !active ? keyboard$ : EMPTY)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Subject } from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve location\n *\n * This function returns a `URL` object (and not `Location`) to normalize the\n * typings across the application. Furthermore, locations need to be tracked\n * without setting them and `Location` is a singleton which represents the\n * current location.\n *\n * @returns URL\n */\nexport function getLocation(): URL {\n return new URL(location.href)\n}\n\n/**\n * Set location\n *\n * If instant navigation is enabled, this function creates a temporary anchor\n * element, sets the `href` attribute, appends it to the body, clicks it, and\n * then removes it again. The event will bubble up the DOM and trigger be\n * intercepted by the instant loading business logic.\n *\n * Note that we must append and remove the anchor element, or the event will\n * not bubble up the DOM, making it impossible to intercept it.\n *\n * @param url - URL to navigate to\n * @param navigate - Force navigation\n */\nexport function setLocation(\n url: URL | HTMLLinkElement, navigate = false\n): void {\n if (feature(\"navigation.instant\") && !navigate) {\n const el = h(\"a\", { href: url.href })\n document.body.appendChild(el)\n el.click()\n el.remove()\n\n // If we're not using instant navigation, and the page should not be reloaded\n // just instruct the browser to navigate to the given URL\n } else {\n location.href = url.href\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch location\n *\n * @returns Location subject\n */\nexport function watchLocation(): Subject<URL> {\n return new Subject<URL>()\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n filter,\n fromEvent,\n map,\n merge,\n shareReplay,\n startWith\n} from \"rxjs\"\n\nimport { getOptionalElement } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve location hash\n *\n * @returns Location hash\n */\nexport function getLocationHash(): string {\n return location.hash.slice(1)\n}\n\n/**\n * Set location hash\n *\n * Setting a new fragment identifier via `location.hash` will have no effect\n * if the value doesn't change. When a new fragment identifier is set, we want\n * the browser to target the respective element at all times, which is why we\n * use this dirty little trick.\n *\n * @param hash - Location hash\n */\nexport function setLocationHash(hash: string): void {\n const el = h(\"a\", { href: hash })\n el.addEventListener(\"click\", ev => ev.stopPropagation())\n el.click()\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch location hash\n *\n * @param location$ - Location observable\n *\n * @returns Location hash observable\n */\nexport function watchLocationHash(\n location$: Observable<URL>\n): Observable<string> {\n return merge(\n fromEvent<HashChangeEvent>(window, \"hashchange\"),\n location$\n )\n .pipe(\n map(getLocationHash),\n startWith(getLocationHash()),\n filter(hash => hash.length > 0),\n shareReplay(1)\n )\n}\n\n/**\n * Watch location target\n *\n * @param location$ - Location observable\n *\n * @returns Location target observable\n */\nexport function watchLocationTarget(\n location$: Observable<URL>\n): Observable<HTMLElement> {\n return watchLocationHash(location$)\n .pipe(\n map(id => getOptionalElement(`[id=\"${id}\"]`)!),\n filter(el => typeof el !== \"undefined\")\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n fromEvent,\n fromEventPattern,\n map,\n merge,\n startWith,\n switchMap\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch media query\n *\n * Note that although `MediaQueryList.addListener` is deprecated we have to\n * use it, because it's the only way to ensure proper downward compatibility.\n *\n * @see https://bit.ly/3dUBH2m - GitHub issue\n *\n * @param query - Media query\n *\n * @returns Media observable\n */\nexport function watchMedia(query: string): Observable<boolean> {\n const media = matchMedia(query)\n return fromEventPattern<boolean>(next => (\n media.addListener(() => next(media.matches))\n ))\n .pipe(\n startWith(media.matches)\n )\n}\n\n/**\n * Watch print mode\n *\n * @returns Print observable\n */\nexport function watchPrint(): Observable<boolean> {\n const media = matchMedia(\"print\")\n return merge(\n fromEvent(window, \"beforeprint\").pipe(map(() => true)),\n fromEvent(window, \"afterprint\").pipe(map(() => false))\n )\n .pipe(\n startWith(media.matches)\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Toggle an observable with a media observable\n *\n * @template T - Data type\n *\n * @param query$ - Media observable\n * @param factory - Observable factory\n *\n * @returns Toggled observable\n */\nexport function at<T>(\n query$: Observable<boolean>, factory: () => Observable<T>\n): Observable<T> {\n return query$\n .pipe(\n switchMap(active => active ? factory() : EMPTY)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n map,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Options\n */\ninterface Options {\n progress$?: Subject<number> // Progress subject\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch the given URL\n *\n * This function returns an observable that emits the response as a blob and\n * completes, or emits an error if the request failed. The caller can cancel\n * the request by unsubscribing at any time, which will automatically abort\n * the inflight request and complete the observable.\n *\n * Note that we use `XMLHTTPRequest` not because we're nostalgic, but because\n * it's the only way to get progress events for downloads and also allow for\n * cancellation of requests, as the official Fetch API does not support this\n * yet, even though we're already in 2024.\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function request(\n url: URL | string, options?: Options\n): Observable<Blob> {\n return new Observable<Blob>(observer => {\n const req = new XMLHttpRequest()\n req.open(\"GET\", `${url}`)\n req.responseType = \"blob\"\n\n // Handle response\n req.addEventListener(\"load\", () => {\n if (req.status >= 200 && req.status < 300) {\n observer.next(req.response)\n observer.complete()\n\n // Every response that is not in the 2xx range is considered an error\n } else {\n observer.error(new Error(req.statusText))\n }\n })\n\n // Handle network errors\n req.addEventListener(\"error\", () => {\n observer.error(new Error(\"Network error\"))\n })\n\n // Handle aborted requests\n req.addEventListener(\"abort\", () => {\n observer.complete()\n })\n\n // Handle download progress\n if (typeof options?.progress$ !== \"undefined\") {\n req.addEventListener(\"progress\", event => {\n if (event.lengthComputable) {\n options.progress$!.next((event.loaded / event.total) * 100)\n\n // Hack: Chromium doesn't report the total number of bytes if content\n // is compressed, so we need this fallback - see https://t.ly/ZXofI\n } else {\n const length = req.getResponseHeader(\"Content-Length\") ?? 0\n options.progress$!.next((event.loaded / +length) * 100)\n }\n })\n\n // Immediately set progress to 5% to indicate that we're loading\n options.progress$.next(5)\n }\n\n // Send request and automatically abort request upon unsubscription\n req.send()\n return () => req.abort()\n })\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Fetch JSON from the given URL\n *\n * @template T - Data type\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestJSON<T>(\n url: URL | string, options?: Options\n): Observable<T> {\n return request(url, options)\n .pipe(\n switchMap(res => res.text()),\n map(body => JSON.parse(body) as T),\n shareReplay(1)\n )\n}\n\n/**\n * Fetch HTML from the given URL\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestHTML(\n url: URL | string, options?: Options\n): Observable<Document> {\n const dom = new DOMParser()\n return request(url, options)\n .pipe(\n switchMap(res => res.text()),\n map(res => dom.parseFromString(res, \"text/html\")),\n shareReplay(1)\n )\n}\n\n/**\n * Fetch XML from the given URL\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestXML(\n url: URL | string, options?: Options\n): Observable<Document> {\n const dom = new DOMParser()\n return request(url, options)\n .pipe(\n switchMap(res => res.text()),\n map(res => dom.parseFromString(res, \"text/xml\")),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport offset\n */\nexport interface ViewportOffset {\n x: number /* Horizontal offset */\n y: number /* Vertical offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve viewport offset\n *\n * On iOS Safari, viewport offset can be negative due to overflow scrolling.\n * As this may induce strange behaviors downstream, we'll just limit it to 0.\n *\n * @returns Viewport offset\n */\nexport function getViewportOffset(): ViewportOffset {\n return {\n x: Math.max(0, scrollX),\n y: Math.max(0, scrollY)\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport offset\n *\n * @returns Viewport offset observable\n */\nexport function watchViewportOffset(): Observable<ViewportOffset> {\n return merge(\n fromEvent(window, \"scroll\", { passive: true }),\n fromEvent(window, \"resize\", { passive: true })\n )\n .pipe(\n map(getViewportOffset),\n startWith(getViewportOffset())\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n startWith\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport size\n */\nexport interface ViewportSize {\n width: number /* Viewport width */\n height: number /* Viewport height */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve viewport size\n *\n * @returns Viewport size\n */\nexport function getViewportSize(): ViewportSize {\n return {\n width: innerWidth,\n height: innerHeight\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport size\n *\n * @returns Viewport size observable\n */\nexport function watchViewportSize(): Observable<ViewportSize> {\n return fromEvent(window, \"resize\", { passive: true })\n .pipe(\n map(getViewportSize),\n startWith(getViewportSize())\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n map,\n shareReplay\n} from \"rxjs\"\n\nimport {\n ViewportOffset,\n watchViewportOffset\n} from \"../offset\"\nimport {\n ViewportSize,\n watchViewportSize\n} from \"../size\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport\n */\nexport interface Viewport {\n offset: ViewportOffset /* Viewport offset */\n size: ViewportSize /* Viewport size */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport\n *\n * @returns Viewport observable\n */\nexport function watchViewport(): Observable<Viewport> {\n return combineLatest([\n watchViewportOffset(),\n watchViewportSize()\n ])\n .pipe(\n map(([offset, size]) => ({ offset, size })),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n distinctUntilKeyChanged,\n map\n} from \"rxjs\"\n\nimport { Header } from \"~/components\"\n\nimport { getElementOffset } from \"../../element\"\nimport { Viewport } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport relative to element\n *\n * @param el - Element\n * @param options - Options\n *\n * @returns Viewport observable\n */\nexport function watchViewportAt(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<Viewport> {\n const size$ = viewport$\n .pipe(\n distinctUntilKeyChanged(\"size\")\n )\n\n /* Compute element offset */\n const offset$ = combineLatest([size$, header$])\n .pipe(\n map(() => getElementOffset(el))\n )\n\n /* Compute relative viewport, return hot observable */\n return combineLatest([header$, viewport$, offset$])\n .pipe(\n map(([{ height }, { offset, size }, { x, y }]) => ({\n offset: {\n x: offset.x - x,\n y: offset.y - y + height\n },\n size\n }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n endWith,\n fromEvent,\n ignoreElements,\n mergeWith,\n share,\n takeUntil\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Worker message\n */\nexport interface WorkerMessage {\n type: unknown /* Message type */\n data?: unknown /* Message data */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create an observable for receiving from a web worker\n *\n * @template T - Data type\n *\n * @param worker - Web worker\n *\n * @returns Message observable\n */\nfunction recv<T>(worker: Worker): Observable<T> {\n return fromEvent<MessageEvent<T>, T>(worker, \"message\", ev => ev.data)\n}\n\n/**\n * Create a subject for sending to a web worker\n *\n * @template T - Data type\n *\n * @param worker - Web worker\n *\n * @returns Message subject\n */\nfunction send<T>(worker: Worker): Subject<T> {\n const send$ = new Subject<T>()\n send$.subscribe(data => worker.postMessage(data))\n\n /* Return message subject */\n return send$\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a bidirectional communication channel to a web worker\n *\n * @template T - Data type\n *\n * @param url - Worker URL\n * @param worker - Worker\n *\n * @returns Worker subject\n */\nexport function watchWorker<T extends WorkerMessage>(\n url: string, worker = new Worker(url)\n): Subject<T> {\n const recv$ = recv<T>(worker)\n const send$ = send<T>(worker)\n\n /* Create worker subject and forward messages */\n const worker$ = new Subject<T>()\n worker$.subscribe(send$)\n\n /* Return worker subject */\n const done$ = send$.pipe(ignoreElements(), endWith(true))\n return worker$\n .pipe(\n ignoreElements(),\n mergeWith(recv$.pipe(takeUntil(done$))),\n share()\n ) as Subject<T>\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { getElement, getLocation } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Feature flag\n */\nexport type Flag =\n | \"announce.dismiss\" /* Dismissable announcement bar */\n | \"content.code.annotate\" /* Code annotations */\n | \"content.code.copy\" /* Code copy button */\n | \"content.lazy\" /* Lazy content elements */\n | \"content.tabs.link\" /* Link content tabs */\n | \"content.tooltips\" /* Tooltips */\n | \"header.autohide\" /* Hide header */\n | \"navigation.expand\" /* Automatic expansion */\n | \"navigation.indexes\" /* Section pages */\n | \"navigation.instant\" /* Instant navigation */\n | \"navigation.instant.progress\" /* Instant navigation progress */\n | \"navigation.sections\" /* Section navigation */\n | \"navigation.tabs\" /* Tabs navigation */\n | \"navigation.tabs.sticky\" /* Tabs navigation (sticky) */\n | \"navigation.top\" /* Back-to-top button */\n | \"navigation.tracking\" /* Anchor tracking */\n | \"search.highlight\" /* Search highlighting */\n | \"search.share\" /* Search sharing */\n | \"search.suggest\" /* Search suggestions */\n | \"toc.follow\" /* Following table of contents */\n | \"toc.integrate\" /* Integrated table of contents */\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Translation\n */\nexport type Translation =\n | \"clipboard.copy\" /* Copy to clipboard */\n | \"clipboard.copied\" /* Copied to clipboard */\n | \"search.result.placeholder\" /* Type to start searching */\n | \"search.result.none\" /* No matching documents */\n | \"search.result.one\" /* 1 matching document */\n | \"search.result.other\" /* # matching documents */\n | \"search.result.more.one\" /* 1 more on this page */\n | \"search.result.more.other\" /* # more on this page */\n | \"search.result.term.missing\" /* Missing */\n | \"select.version\" /* Version selector */\n\n/**\n * Translations\n */\nexport type Translations =\n Record<Translation, string>\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Versioning\n */\nexport interface Versioning {\n provider: \"mike\" /* Version provider */\n default?: string | string[] /* Default version */\n alias?: boolean /* Show alias */\n}\n\n/**\n * Configuration\n */\nexport interface Config {\n base: string /* Base URL */\n features: Flag[] /* Feature flags */\n translations: Translations /* Translations */\n search: string /* Search worker URL */\n tags?: Record<string, string> /* Tags mapping */\n version?: Versioning /* Versioning */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve global configuration and make base URL absolute\n */\nconst script = getElement(\"#__config\")\nconst config: Config = JSON.parse(script.textContent!)\nconfig.base = `${new URL(config.base, getLocation())}`\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve global configuration\n *\n * @returns Global configuration\n */\nexport function configuration(): Config {\n return config\n}\n\n/**\n * Check whether a feature flag is enabled\n *\n * @param flag - Feature flag\n *\n * @returns Test result\n */\nexport function feature(flag: Flag): boolean {\n return config.features.includes(flag)\n}\n\n/**\n * Retrieve the translation for the given key\n *\n * @param key - Key to be translated\n * @param value - Positional value, if any\n *\n * @returns Translation\n */\nexport function translation(\n key: Translation, value?: string | number\n): string {\n return typeof value !== \"undefined\"\n ? config.translations[key].replace(\"#\", value.toString())\n : config.translations[key]\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { getElement, getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Component type\n */\nexport type ComponentType =\n | \"announce\" /* Announcement bar */\n | \"container\" /* Container */\n | \"consent\" /* Consent */\n | \"content\" /* Content */\n | \"dialog\" /* Dialog */\n | \"header\" /* Header */\n | \"header-title\" /* Header title */\n | \"header-topic\" /* Header topic */\n | \"main\" /* Main area */\n | \"outdated\" /* Version warning */\n | \"palette\" /* Color palette */\n | \"progress\" /* Progress indicator */\n | \"search\" /* Search */\n | \"search-query\" /* Search input */\n | \"search-result\" /* Search results */\n | \"search-share\" /* Search sharing */\n | \"search-suggest\" /* Search suggestions */\n | \"sidebar\" /* Sidebar */\n | \"skip\" /* Skip link */\n | \"source\" /* Repository information */\n | \"tabs\" /* Navigation tabs */\n | \"toc\" /* Table of contents */\n | \"top\" /* Back-to-top button */\n\n/**\n * Component\n *\n * @template T - Component type\n * @template U - Reference type\n */\nexport type Component<\n T extends {} = {},\n U extends HTMLElement = HTMLElement\n> =\n T & {\n ref: U /* Component reference */\n }\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Component type map\n */\ninterface ComponentTypeMap {\n \"announce\": HTMLElement /* Announcement bar */\n \"container\": HTMLElement /* Container */\n \"consent\": HTMLElement /* Consent */\n \"content\": HTMLElement /* Content */\n \"dialog\": HTMLElement /* Dialog */\n \"header\": HTMLElement /* Header */\n \"header-title\": HTMLElement /* Header title */\n \"header-topic\": HTMLElement /* Header topic */\n \"main\": HTMLElement /* Main area */\n \"outdated\": HTMLElement /* Version warning */\n \"palette\": HTMLElement /* Color palette */\n \"progress\": HTMLElement /* Progress indicator */\n \"search\": HTMLElement /* Search */\n \"search-query\": HTMLInputElement /* Search input */\n \"search-result\": HTMLElement /* Search results */\n \"search-share\": HTMLAnchorElement /* Search sharing */\n \"search-suggest\": HTMLElement /* Search suggestions */\n \"sidebar\": HTMLElement /* Sidebar */\n \"skip\": HTMLAnchorElement /* Skip link */\n \"source\": HTMLAnchorElement /* Repository information */\n \"tabs\": HTMLElement /* Navigation tabs */\n \"toc\": HTMLElement /* Table of contents */\n \"top\": HTMLAnchorElement /* Back-to-top button */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve the element for a given component or throw a reference error\n *\n * @template T - Component type\n *\n * @param type - Component type\n * @param node - Node of reference\n *\n * @returns Element\n */\nexport function getComponentElement<T extends ComponentType>(\n type: T, node: ParentNode = document\n): ComponentTypeMap[T] {\n return getElement(`[data-md-component=${type}]`, node)\n}\n\n/**\n * Retrieve all elements for a given component\n *\n * @template T - Component type\n *\n * @param type - Component type\n * @param node - Node of reference\n *\n * @returns Elements\n */\nexport function getComponentElements<T extends ComponentType>(\n type: T, node: ParentNode = document\n): ComponentTypeMap[T][] {\n return getElements(`[data-md-component=${type}]`, node)\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n finalize,\n fromEvent,\n map,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { getElement } from \"~/browser\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Announcement bar\n */\nexport interface Announce {\n hash: number /* Content hash */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch announcement bar\n *\n * @param el - Announcement bar element\n *\n * @returns Announcement bar observable\n */\nexport function watchAnnounce(\n el: HTMLElement\n): Observable<Announce> {\n const button = getElement(\".md-typeset > :first-child\", el)\n return fromEvent(button, \"click\", { once: true })\n .pipe(\n map(() => getElement(\".md-typeset\", el)),\n map(content => ({ hash: __md_hash(content.innerHTML) }))\n )\n}\n\n/**\n * Mount announcement bar\n *\n * @param el - Announcement bar element\n *\n * @returns Announcement bar component observable\n */\nexport function mountAnnounce(\n el: HTMLElement\n): Observable<Component<Announce>> {\n if (!feature(\"announce.dismiss\") || !el.childElementCount)\n return EMPTY\n\n /* Support instant navigation - see https://t.ly/3FTme */\n if (!el.hidden) {\n const content = getElement(\".md-typeset\", el)\n if (__md_hash(content.innerHTML) === __md_get(\"__announce\"))\n el.hidden = true\n }\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<Announce>()\n push$.subscribe(({ hash }) => {\n el.hidden = true\n\n /* Persist preference in local storage */\n __md_set<number>(\"__announce\", hash)\n })\n\n /* Create and return component */\n return watchAnnounce(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n finalize,\n map,\n tap\n} from \"rxjs\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Consent\n */\nexport interface Consent {\n hidden: boolean /* Consent is hidden */\n}\n\n/**\n * Consent defaults\n */\nexport interface ConsentDefaults {\n analytics?: boolean /* Consent for Analytics */\n github?: boolean /* Consent for GitHub */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n target$: Observable<HTMLElement> /* Target observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch consent\n *\n * @param el - Consent element\n * @param options - Options\n *\n * @returns Consent observable\n */\nexport function watchConsent(\n el: HTMLElement, { target$ }: WatchOptions\n): Observable<Consent> {\n return target$\n .pipe(\n map(target => ({ hidden: target !== el }))\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount consent\n *\n * @param el - Consent element\n * @param options - Options\n *\n * @returns Consent component observable\n */\nexport function mountConsent(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Consent>> {\n const internal$ = new Subject<Consent>()\n internal$.subscribe(({ hidden }) => {\n el.hidden = hidden\n })\n\n /* Create and return component */\n return watchConsent(el, options)\n .pipe(\n tap(state => internal$.next(state)),\n finalize(() => internal$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ComponentChild } from \"preact\"\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tooltip style\n */\nexport type TooltipStyle =\n | \"inline\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a tooltip\n *\n * @param id - Tooltip identifier\n * @param style - Tooltip style\n *\n * @returns Element\n */\nexport function renderTooltip(\n id?: string, style?: TooltipStyle\n): HTMLElement {\n if (style === \"inline\") { // @todo refactor control flow\n return (\n <div class=\"md-tooltip md-tooltip--inline\" id={id} role=\"tooltip\">\n <div class=\"md-tooltip__inner md-typeset\"></div>\n </div>\n )\n } else {\n return (\n <div class=\"md-tooltip\" id={id} role=\"tooltip\">\n <div class=\"md-tooltip__inner md-typeset\"></div>\n </div>\n )\n }\n}\n\n// @todo: rename\nexport function renderInlineTooltip2(\n ...children: ComponentChild[]\n): HTMLElement {\n return (\n <div class=\"md-tooltip2\" role=\"tooltip\">\n <div class=\"md-tooltip2__inner md-typeset\">\n {children}\n </div>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\nimport { renderTooltip } from \"../tooltip\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render an annotation\n *\n * @param id - Annotation identifier\n * @param prefix - Tooltip identifier prefix\n *\n * @returns Element\n */\nexport function renderAnnotation(\n id: string | number, prefix?: string\n): HTMLElement {\n prefix = prefix ? `${prefix}_annotation_${id}` : undefined\n\n /* Render tooltip with anchor, if given */\n if (prefix) {\n const anchor = prefix ? `#${prefix}` : undefined\n return (\n <aside class=\"md-annotation\" tabIndex={0}>\n {renderTooltip(prefix)}\n <a href={anchor} class=\"md-annotation__index\" tabIndex={-1}>\n <span data-md-annotation-id={id}></span>\n </a>\n </aside>\n )\n } else {\n return (\n <aside class=\"md-annotation\" tabIndex={0}>\n {renderTooltip(prefix)}\n <span class=\"md-annotation__index\" tabIndex={-1}>\n <span data-md-annotation-id={id}></span>\n </span>\n </aside>\n )\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { translation } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a 'copy-to-clipboard' button\n *\n * @param id - Unique identifier\n *\n * @returns Element\n */\nexport function renderClipboardButton(id: string): HTMLElement {\n return (\n <button\n class=\"md-clipboard md-icon\"\n title={translation(\"clipboard.copy\")}\n data-clipboard-target={`#${id} > code`}\n ></button>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\nimport { ComponentChild } from \"preact\"\n\nimport { configuration, feature, translation } from \"~/_\"\nimport { SearchItem } from \"~/integrations/search\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Render flag\n */\nconst enum Flag {\n TEASER = 1, /* Render teaser */\n PARENT = 2 /* Render as parent */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper function\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a search document\n *\n * @param document - Search document\n * @param flag - Render flags\n *\n * @returns Element\n */\nfunction renderSearchDocument(\n document: SearchItem, flag: Flag\n): HTMLElement {\n const parent = flag & Flag.PARENT\n const teaser = flag & Flag.TEASER\n\n /* Render missing query terms */\n const missing = Object.keys(document.terms)\n .filter(key => !document.terms[key])\n .reduce<ComponentChild[]>((list, key) => [\n ...list, <del>{escapeHTML(key)}</del>, \" \"\n ], [])\n .slice(0, -1)\n\n /* Assemble query string for highlighting */\n const config = configuration()\n const url = new URL(document.location, config.base)\n if (feature(\"search.highlight\"))\n url.searchParams.set(\"h\", Object.entries(document.terms)\n .filter(([, match]) => match)\n .reduce((highlight, [value]) => `${highlight} ${value}`.trim(), \"\")\n )\n\n /* Render article or section, depending on flags */\n const { tags } = configuration()\n return (\n <a href={`${url}`} class=\"md-search-result__link\" tabIndex={-1}>\n <article\n class=\"md-search-result__article md-typeset\"\n data-md-score={document.score.toFixed(2)}\n >\n {parent > 0 && <div class=\"md-search-result__icon md-icon\"></div>}\n {parent > 0 && <h1>{document.title}</h1>}\n {parent <= 0 && <h2>{document.title}</h2>}\n {teaser > 0 && document.text.length > 0 &&\n document.text\n }\n {document.tags && (\n <nav class=\"md-tags\">\n {document.tags.map(tag => {\n const type = tags\n ? tag in tags\n ? `md-tag-icon md-tag--${tags[tag]}`\n : \"md-tag-icon\"\n : \"\"\n return (\n <span class={`md-tag ${type}`}>{tag}</span>\n )\n })}\n </nav>\n )}\n {teaser > 0 && missing.length > 0 &&\n <p class=\"md-search-result__terms\">\n {translation(\"search.result.term.missing\")}: {...missing}\n </p>\n }\n </article>\n </a>\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a search result\n *\n * @param result - Search result\n *\n * @returns Element\n */\nexport function renderSearchResultItem(\n result: SearchItem[]\n): HTMLElement {\n const threshold = result[0].score\n const docs = [...result]\n\n const config = configuration()\n\n /* Find and extract parent article */\n const parent = docs.findIndex(doc => {\n const l = `${new URL(doc.location, config.base)}` // @todo hacky\n return !l.includes(\"#\")\n })\n const [article] = docs.splice(parent, 1)\n\n /* Determine last index above threshold */\n let index = docs.findIndex(doc => doc.score < threshold)\n if (index === -1)\n index = docs.length\n\n /* Partition sections */\n const best = docs.slice(0, index)\n const more = docs.slice(index)\n\n /* Render children */\n const children = [\n renderSearchDocument(article, Flag.PARENT | +(!parent && index === 0)),\n ...best.map(section => renderSearchDocument(section, Flag.TEASER)),\n ...more.length ? [\n <details class=\"md-search-result__more\">\n <summary tabIndex={-1}>\n <div>\n {more.length > 0 && more.length === 1\n ? translation(\"search.result.more.one\")\n : translation(\"search.result.more.other\", more.length)\n }\n </div>\n </summary>\n {...more.map(section => renderSearchDocument(section, Flag.TEASER))}\n </details>\n ] : []\n ]\n\n /* Render search result */\n return (\n <li class=\"md-search-result__item\">\n {children}\n </li>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { SourceFacts } from \"~/components\"\nimport { h, round } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render repository facts\n *\n * @param facts - Repository facts\n *\n * @returns Element\n */\nexport function renderSourceFacts(facts: SourceFacts): HTMLElement {\n return (\n <ul class=\"md-source__facts\">\n {Object.entries(facts).map(([key, value]) => (\n <li class={`md-source__fact md-source__fact--${key}`}>\n {typeof value === \"number\" ? round(value) : value}\n </li>\n ))}\n </ul>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tabbed control type\n */\ntype TabbedControlType =\n | \"prev\"\n | \"next\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render control for content tabs\n *\n * @param type - Control type\n *\n * @returns Element\n */\nexport function renderTabbedControl(\n type: TabbedControlType\n): HTMLElement {\n const classes = `tabbed-control tabbed-control--${type}`\n return (\n <div class={classes} hidden>\n <button class=\"tabbed-button\" tabIndex={-1} aria-hidden=\"true\"></button>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a table inside a wrapper to improve scrolling on mobile\n *\n * @param table - Table element\n *\n * @returns Element\n */\nexport function renderTable(table: HTMLElement): HTMLElement {\n return (\n <div class=\"md-typeset__scrollwrap\">\n <div class=\"md-typeset__table\">\n {table}\n </div>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { configuration, translation } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Version properties\n */\nexport interface VersionProperties {\n hidden?: boolean /* Version is hidden */\n}\n\n/**\n * Version\n */\nexport interface Version {\n version: string /* Version identifier */\n title: string /* Version title */\n aliases: string[] /* Version aliases */\n properties?: VersionProperties /* Version properties */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a version\n *\n * @param version - Version\n *\n * @returns Element\n */\nfunction renderVersion(version: Version): HTMLElement {\n const config = configuration()\n\n /* Ensure trailing slash - see https://bit.ly/3rL5u3f */\n const url = new URL(`../${version.version}/`, config.base)\n return (\n <li class=\"md-version__item\">\n <a href={`${url}`} class=\"md-version__link\">\n {version.title}\n {config.version?.alias && version.aliases.length > 0 && (\n <span class=\"md-version__alias\">\n {version.aliases[0]}\n </span>\n )}\n </a>\n </li>\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a version selector\n *\n * @param versions - Versions\n * @param active - Active version\n *\n * @returns Element\n */\nexport function renderVersionSelector(\n versions: Version[], active: Version\n): HTMLElement {\n const config = configuration()\n versions = versions.filter(version => !version.properties?.hidden)\n return (\n <div class=\"md-version\">\n <button\n class=\"md-version__current\"\n aria-label={translation(\"select.version\")}\n >\n {active.title}\n {config.version?.alias && active.aliases.length > 0 && (\n <span class=\"md-version__alias\">\n {active.aliases[0]}\n </span>\n )}\n </button>\n <ul class=\"md-version__list\">\n {versions.map(renderVersion)}\n </ul>\n </div>\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n BehaviorSubject,\n EMPTY,\n Observable,\n Subject,\n animationFrameScheduler,\n combineLatest,\n combineLatestWith,\n debounce,\n defer,\n distinctUntilChanged,\n endWith,\n filter,\n finalize,\n first,\n ignoreElements,\n map,\n mergeMap,\n observeOn,\n queueScheduler,\n share,\n startWith,\n switchMap,\n tap,\n throttleTime,\n timer,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n ElementOffset,\n Viewport,\n getElement,\n getElementContainers,\n getElementOffsetAbsolute,\n getElementSize,\n watchElementContentOffset,\n watchElementFocus,\n watchElementHover\n} from \"~/browser\"\nimport { renderInlineTooltip2 } from \"~/templates\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tooltip\n */\nexport interface Tooltip {\n active: boolean // Tooltip is active\n offset: ElementOffset // Tooltip offset\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Dependencies\n */\ninterface Dependencies {\n content$: Observable<HTMLElement> // Tooltip content observable\n viewport$: Observable<Viewport> // Viewport observable\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Global sequence number for tooltips\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch tooltip\n *\n * This function tracks the tooltip host element, and deduces the active state\n * and offset of the tooltip from it. The active state is determined by whether\n * the host element is focused or hovered, and the offset is determined by the\n * host element's absolute position in the document.\n *\n * @param el - Tooltip host element\n *\n * @returns Tooltip observable\n */\nexport function watchTooltip2(\n el: HTMLElement\n): Observable<Tooltip> {\n\n // Compute whether tooltip should be shown - we need to watch both focus and\n // hover events on the host element and emit if one of them is active. In case\n // of a hover event, we keep the element visible for a short amount of time\n // after the pointer left the host element for a better user experience.\n const active$ =\n combineLatest([\n watchElementFocus(el),\n watchElementHover(el)\n ])\n .pipe(\n map(([focus, hover]) => focus || hover),\n distinctUntilChanged()\n )\n\n // We need to determine all parent elements of the host element that are\n // currently scrollable, as they might affect the position of the tooltip\n // depending on their horizontal of vertical offset. We must track all of\n // them and recompute the position of the tooltip if they change.\n const offset$ =\n defer(() => getElementContainers(el)).pipe(\n mergeMap(watchElementContentOffset),\n throttleTime(1),\n // Note that we need to poll the value again if the active state changes,\n // as otherwise the tooltip might be misplaced. This particularly happens\n // when using third-party integrations like tablesort that change the\n // position of elements \u2013 see https://t.ly/Y-V7X\n combineLatestWith(active$),\n map(() => getElementOffsetAbsolute(el)),\n )\n\n // Only track parent elements and compute offset of the tooltip host if the\n // tooltip should be shown - we defer the computation of the offset until the\n // tooltip becomes active for the first time. This is necessary, because we\n // must also keep the tooltip active as long as it is focused or hovered.\n return active$.pipe(\n first(active => active),\n switchMap(() => combineLatest([active$, offset$])),\n map(([active, offset]) => ({ active, offset })),\n share()\n )\n}\n\n/**\n * Mount tooltip\n *\n * This function renders a tooltip with the content from the provided `content$`\n * observable as passed via the dependencies. If the returned element has a role\n * of type `dialog`, the tooltip is considered to be interactive, and rendered\n * either above or below the host element, depending on the available space.\n *\n * If the returned element has a role of type `tooltip`, the tooltip is always\n * rendered below the host element and considered to be non-interactive. This\n * allows us to reuse the same positioning logic for both interactive and\n * non-interactive tooltips, as it is largely the same.\n *\n * @param el - Tooltip host element\n * @param dependencies - Dependencies\n *\n * @returns Tooltip component observable\n */\nexport function mountTooltip2(\n el: HTMLElement, dependencies: Dependencies\n): Observable<Component<Tooltip>> {\n const { content$, viewport$ } = dependencies\n\n // Compute unique tooltip id - this is necessary to associate the tooltip host\n // element with the tooltip element for ARIA purposes\n const id = `__tooltip2_${sequence++}`\n\n // Create component on subscription\n return defer(() => {\n const push$ = new Subject<Tooltip>()\n\n // Create subject to track tooltip presence and visibility - we use another\n // purely internal subject to track the tooltip's presence and visibility,\n // as the tooltip should be visible if the host element or tooltip itself\n // is focused or hovered to allow for smooth pointer migration\n const show$ = new BehaviorSubject(false)\n push$.pipe(ignoreElements(), endWith(false))\n .subscribe(show$)\n\n // Create observable controlling tooltip element - we create and attach the\n // tooltip only if it is actually present, in order to keep the number of\n // elements low. We need to keep the tooltip visible for a short time after\n // the pointer left the host element or tooltip itself. For this, we use an\n // inner subscription to the tooltip observable, which we terminate when the\n // tooltip should not be shown, automatically removing the element. Moreover\n // we use the queue scheduler, which will schedule synchronously in case the\n // tooltip should be shown, and asynchronously if it should be hidden.\n const node$ = show$.pipe(\n debounce(active => timer(+!active * 250, queueScheduler)),\n distinctUntilChanged(),\n switchMap(active => active ? content$ : EMPTY),\n tap(node => node.id = id),\n share()\n )\n\n // Compute tooltip presence and visibility - the tooltip should be shown if\n // the host element or the tooltip itself is focused or hovered\n combineLatest([\n push$.pipe(map(({ active }) => active)),\n node$.pipe(\n switchMap(node => watchElementHover(node, 250)),\n startWith(false)\n )\n ])\n .pipe(map(states => states.some(active => active)))\n .subscribe(show$)\n\n // Compute tooltip origin - we need to compute the tooltip origin depending\n // on the position of the host element, the viewport size, as well as the\n // actual size of the tooltip, if positioned above. The tooltip must about\n // to be rendered for this to be correct, which is why we do it here.\n const origin$ = show$.pipe(\n filter(active => active),\n withLatestFrom(node$, viewport$),\n map(([_, node, { size }]) => {\n const host = el.getBoundingClientRect()\n const x = host.width / 2\n\n // If the tooltip is non-interactive, we always render it below the\n // actual element because all operating systems do it that way\n if (node.role === \"tooltip\") {\n return { x, y: 8 + host.height }\n\n // Otherwise, we determine where there is more space, and render the\n // tooltip either above or below the host element\n } else if (host.y >= size.height / 2) {\n const { height } = getElementSize(node)\n return { x, y: -16 - height }\n } else {\n return { x, y: +16 + host.height }\n }\n })\n )\n\n // Update tooltip position - we always need to update the position of the\n // tooltip, as it might change depending on the viewport offset of the host\n combineLatest([node$, push$, origin$])\n .subscribe(([node, { offset }, origin]) => {\n node.style.setProperty(\"--md-tooltip-host-x\", `${offset.x}px`)\n node.style.setProperty(\"--md-tooltip-host-y\", `${offset.y}px`)\n\n // Update tooltip origin - this is mainly set to determine the position\n // of the tooltip tail, to show the direction it is originating from\n node.style.setProperty(\"--md-tooltip-x\", `${origin.x}px`)\n node.style.setProperty(\"--md-tooltip-y\", `${origin.y}px`)\n\n // Update tooltip render location, i.e., whether the tooltip is shown\n // above or below the host element, depending on the available space\n node.classList.toggle(\"md-tooltip2--top\", origin.y < 0)\n node.classList.toggle(\"md-tooltip2--bottom\", origin.y >= 0)\n })\n\n // Update tooltip width - we only explicitly set the width of the tooltip\n // if it is non-interactive, in case it should always be rendered centered\n show$.pipe(\n filter(active => active),\n withLatestFrom(node$, (_, node) => node),\n filter(node => node.role === \"tooltip\")\n )\n .subscribe(node => {\n const size = getElementSize(getElement(\":scope > *\", node))\n\n // Set tooltip width and remove tail by setting it to a width of zero -\n // if authors want to keep the tail, we can move this to CSS later\n node.style.setProperty(\"--md-tooltip-width\", `${size.width}px`)\n node.style.setProperty(\"--md-tooltip-tail\", `${0}px`)\n })\n\n // Update tooltip visibility - we defer to the next animation frame, because\n // the tooltip must first be added to the document before we make it appear,\n // or it will appear instantly without delay. Additionally, we need to keep\n // the tooltip visible for a short time after the pointer left the host.\n show$.pipe(\n distinctUntilChanged(),\n observeOn(animationFrameScheduler),\n withLatestFrom(node$)\n )\n .subscribe(([active, node]) => {\n node.classList.toggle(\"md-tooltip2--active\", active)\n })\n\n // Set up ARIA attributes when tooltip is visible\n combineLatest([\n show$.pipe(filter(active => active)),\n node$\n ])\n .subscribe(([_, node]) => {\n if (node.role === \"dialog\") {\n el.setAttribute(\"aria-controls\", id)\n el.setAttribute(\"aria-haspopup\", \"dialog\")\n } else {\n el.setAttribute(\"aria-describedby\", id)\n }\n })\n\n // Remove ARIA attributes when tooltip is hidden\n show$.pipe(filter(active => !active))\n .subscribe(() => {\n el.removeAttribute(\"aria-controls\")\n el.removeAttribute(\"aria-describedby\")\n el.removeAttribute(\"aria-haspopup\")\n })\n\n // Create and return component\n return watchTooltip2(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n\n// ----------------------------------------------------------------------------\n\n/**\n * Mount inline tooltip\n *\n * @todo refactor this function\n *\n * @param el - Tooltip host element\n * @param dependencies - Dependencies\n * @param container - Container\n *\n * @returns Tooltip component observable\n */\nexport function mountInlineTooltip2(\n el: HTMLElement, { viewport$ }: { viewport$: Observable<Viewport> },\n container = document.body\n): Observable<Component<Tooltip>> {\n return mountTooltip2(el, {\n content$: new Observable<HTMLElement>(observer => {\n const title = el.title\n const node = renderInlineTooltip2(title)\n observer.next(node)\n el.removeAttribute(\"title\")\n // Append tooltip and remove on unsubscription\n container.append(node)\n return () => {\n node.remove()\n el.setAttribute(\"title\", title)\n }\n }),\n viewport$\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n auditTime,\n combineLatest,\n debounceTime,\n defer,\n delay,\n endWith,\n filter,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n merge,\n switchMap,\n take,\n takeUntil,\n tap,\n throttleTime,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n ElementOffset,\n getActiveElement,\n getElementSize,\n watchElementContentOffset,\n watchElementFocus,\n watchElementOffset,\n watchElementVisibility\n} from \"~/browser\"\n\nimport { Component } from \"../../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Annotation\n */\nexport interface Annotation {\n active: boolean /* Annotation is active */\n offset: ElementOffset /* Annotation offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch annotation\n *\n * @param el - Annotation element\n * @param container - Containing element\n *\n * @returns Annotation observable\n */\nexport function watchAnnotation(\n el: HTMLElement, container: HTMLElement\n): Observable<Annotation> {\n const offset$ = defer(() => combineLatest([\n watchElementOffset(el),\n watchElementContentOffset(container)\n ]))\n .pipe(\n map(([{ x, y }, scroll]): ElementOffset => {\n const { width, height } = getElementSize(el)\n return ({\n x: x - scroll.x + width / 2,\n y: y - scroll.y + height / 2\n })\n })\n )\n\n /* Actively watch annotation on focus */\n return watchElementFocus(el)\n .pipe(\n switchMap(active => offset$\n .pipe(\n map(offset => ({ active, offset })),\n take(+!active || Infinity)\n )\n )\n )\n}\n\n/**\n * Mount annotation\n *\n * @param el - Annotation element\n * @param container - Containing element\n * @param options - Options\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotation(\n el: HTMLElement, container: HTMLElement, { target$ }: MountOptions\n): Observable<Component<Annotation>> {\n const [tooltip, index] = Array.from(el.children)\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<Annotation>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe({\n\n /* Handle emission */\n next({ offset }) {\n el.style.setProperty(\"--md-tooltip-x\", `${offset.x}px`)\n el.style.setProperty(\"--md-tooltip-y\", `${offset.y}px`)\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-tooltip-x\")\n el.style.removeProperty(\"--md-tooltip-y\")\n }\n })\n\n /* Start animation only when annotation is visible */\n watchElementVisibility(el)\n .pipe(\n takeUntil(done$)\n )\n .subscribe(visible => {\n el.toggleAttribute(\"data-md-visible\", visible)\n })\n\n /* Toggle tooltip presence to mitigate empty lines when copying */\n merge(\n push$.pipe(filter(({ active }) => active)),\n push$.pipe(debounceTime(250), filter(({ active }) => !active))\n )\n .subscribe({\n\n /* Handle emission */\n next({ active }) {\n if (active)\n el.prepend(tooltip)\n else\n tooltip.remove()\n },\n\n /* Handle complete */\n complete() {\n el.prepend(tooltip)\n }\n })\n\n /* Toggle tooltip visibility */\n push$\n .pipe(\n auditTime(16, animationFrameScheduler)\n )\n .subscribe(({ active }) => {\n tooltip.classList.toggle(\"md-tooltip--active\", active)\n })\n\n /* Track relative origin of tooltip */\n push$\n .pipe(\n throttleTime(125, animationFrameScheduler),\n filter(() => !!el.offsetParent),\n map(() => el.offsetParent!.getBoundingClientRect()),\n map(({ x }) => x)\n )\n .subscribe({\n\n /* Handle emission */\n next(origin) {\n if (origin)\n el.style.setProperty(\"--md-tooltip-0\", `${-origin}px`)\n else\n el.style.removeProperty(\"--md-tooltip-0\")\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-tooltip-0\")\n }\n })\n\n /* Allow to copy link without scrolling to anchor */\n fromEvent<MouseEvent>(index, \"click\")\n .pipe(\n takeUntil(done$),\n filter(ev => !(ev.metaKey || ev.ctrlKey))\n )\n .subscribe(ev => {\n ev.stopPropagation()\n ev.preventDefault()\n })\n\n /* Allow to open link in new tab or blur on close */\n fromEvent<MouseEvent>(index, \"mousedown\")\n .pipe(\n takeUntil(done$),\n withLatestFrom(push$)\n )\n .subscribe(([ev, { active }]) => {\n\n /* Open in new tab */\n if (ev.button !== 0 || ev.metaKey || ev.ctrlKey) {\n ev.preventDefault()\n\n /* Close annotation */\n } else if (active) {\n ev.preventDefault()\n\n /* Focus parent annotation, if any */\n const parent = el.parentElement!.closest(\".md-annotation\")\n if (parent instanceof HTMLElement)\n parent.focus()\n else\n getActiveElement()?.blur()\n }\n })\n\n /* Open and focus annotation on location target */\n target$\n .pipe(\n takeUntil(done$),\n filter(target => target === tooltip),\n delay(125)\n )\n .subscribe(() => el.focus())\n\n /* Create and return component */\n return watchAnnotation(el, container)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n endWith,\n finalize,\n ignoreElements,\n merge,\n share,\n takeUntil\n} from \"rxjs\"\n\nimport {\n getElement,\n getElements,\n getOptionalElement\n} from \"~/browser\"\nimport { renderAnnotation } from \"~/templates\"\n\nimport { Component } from \"../../../_\"\nimport {\n Annotation,\n mountAnnotation\n} from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find all annotation hosts in the containing element\n *\n * @param container - Containing element\n *\n * @returns Annotation hosts\n */\nfunction findHosts(container: HTMLElement): HTMLElement[] {\n return container.tagName === \"CODE\"\n ? getElements(\".c, .c1, .cm\", container)\n : [container]\n}\n\n/**\n * Find all annotation markers in the containing element\n *\n * @param container - Containing element\n *\n * @returns Annotation markers\n */\nfunction findMarkers(container: HTMLElement): Text[] {\n const markers: Text[] = []\n for (const el of findHosts(container)) {\n const nodes: Text[] = []\n\n /* Find all text nodes in current element */\n const it = document.createNodeIterator(el, NodeFilter.SHOW_TEXT)\n for (let node = it.nextNode(); node; node = it.nextNode())\n nodes.push(node as Text)\n\n /* Find all markers in each text node */\n for (let text of nodes) {\n let match: RegExpExecArray | null\n\n /* Split text at marker and add to list */\n while ((match = /(\\(\\d+\\))(!)?/.exec(text.textContent!))) {\n const [, id, force] = match\n if (typeof force === \"undefined\") {\n const marker = text.splitText(match.index)\n text = marker.splitText(id.length)\n markers.push(marker)\n\n /* Replace entire text with marker */\n } else {\n text.textContent = id\n markers.push(text)\n break\n }\n }\n }\n }\n return markers\n}\n\n/**\n * Swap the child nodes of two elements\n *\n * @param source - Source element\n * @param target - Target element\n */\nfunction swap(source: HTMLElement, target: HTMLElement): void {\n target.append(...Array.from(source.childNodes))\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount annotation list\n *\n * This function analyzes the containing code block and checks for markers\n * referring to elements in the given annotation list. If no markers are found,\n * the list is left untouched. Otherwise, list elements are rendered as\n * annotations inside the code block.\n *\n * @param el - Annotation list element\n * @param container - Containing element\n * @param options - Options\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotationList(\n el: HTMLElement, container: HTMLElement, { target$, print$ }: MountOptions\n): Observable<Component<Annotation>> {\n\n /* Compute prefix for tooltip anchors */\n const parent = container.closest(\"[id]\")\n const prefix = parent?.id\n\n /* Find and replace all markers with empty annotations */\n const annotations = new Map<string, HTMLElement>()\n for (const marker of findMarkers(container)) {\n const [, id] = marker.textContent!.match(/\\((\\d+)\\)/)!\n if (getOptionalElement(`:scope > li:nth-child(${id})`, el)) {\n annotations.set(id, renderAnnotation(id, prefix))\n marker.replaceWith(annotations.get(id)!)\n }\n }\n\n /* Keep list if there are no annotations to render */\n if (annotations.size === 0)\n return EMPTY\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n\n /* Retrieve container pairs for swapping */\n const pairs: [HTMLElement, HTMLElement][] = []\n for (const [id, annotation] of annotations)\n pairs.push([\n getElement(\".md-typeset\", annotation),\n getElement(`:scope > li:nth-child(${id})`, el)\n ])\n\n /* Handle print mode - see https://bit.ly/3rgPdpt */\n print$.pipe(takeUntil(done$))\n .subscribe(active => {\n el.hidden = !active\n\n /* Add class to discern list element */\n el.classList.toggle(\"md-annotation-list\", active)\n\n /* Show annotations in code block or list (print) */\n for (const [inner, child] of pairs)\n if (!active)\n swap(child, inner)\n else\n swap(inner, child)\n })\n\n /* Create and return component */\n return merge(...[...annotations]\n .map(([, annotation]) => (\n mountAnnotation(annotation, container, { target$ })\n ))\n )\n .pipe(\n finalize(() => push$.complete()),\n share()\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { EMPTY, Observable, defer } from \"rxjs\"\n\nimport { Component } from \"../../../_\"\nimport { Annotation } from \"../_\"\nimport { mountAnnotationList } from \"../list\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find list element directly following a block\n *\n * @param el - Annotation block element\n *\n * @returns List element or nothing\n */\nfunction findList(el: HTMLElement): HTMLElement | undefined {\n if (el.nextElementSibling) {\n const sibling = el.nextElementSibling as HTMLElement\n if (sibling.tagName === \"OL\")\n return sibling\n\n /* Skip empty paragraphs - see https://bit.ly/3r4ZJ2O */\n else if (sibling.tagName === \"P\" && !sibling.children.length)\n return findList(sibling)\n }\n\n /* Everything else */\n return undefined\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount annotation block\n *\n * @param el - Annotation block element\n * @param options - Options\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotationBlock(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Annotation>> {\n return defer(() => {\n const list = findList(el)\n return typeof list !== \"undefined\"\n ? mountAnnotationList(list, el, options)\n : EMPTY\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport ClipboardJS from \"clipboard\"\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n filter,\n finalize,\n map,\n mergeWith,\n switchMap,\n take,\n takeLast,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n getElementContentSize,\n getElements,\n watchElementSize,\n watchElementVisibility\n} from \"~/browser\"\nimport {\n Tooltip,\n mountInlineTooltip2\n} from \"~/components/tooltip2\"\nimport { renderClipboardButton } from \"~/templates\"\n\nimport { Component } from \"../../../_\"\nimport {\n Annotation,\n mountAnnotationList\n} from \"../../annotation\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Code block overflow\n */\nexport interface Overflow {\n scrollable: boolean /* Code block overflows */\n}\n\n/**\n * Code block\n */\nexport type CodeBlock =\n | Overflow\n | Annotation\n | Tooltip\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Global sequence number for code blocks\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find candidate list element directly following a code block\n *\n * @param el - Code block element\n *\n * @returns List element or nothing\n */\nfunction findCandidateList(el: HTMLElement): HTMLElement | undefined {\n if (el.nextElementSibling) {\n const sibling = el.nextElementSibling as HTMLElement\n if (sibling.tagName === \"OL\")\n return sibling\n\n /* Skip empty paragraphs - see https://bit.ly/3r4ZJ2O */\n else if (sibling.tagName === \"P\" && !sibling.children.length)\n return findCandidateList(sibling)\n }\n\n /* Everything else */\n return undefined\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch code block\n *\n * This function monitors size changes of the viewport, as well as switches of\n * content tabs with embedded code blocks, as both may trigger overflow.\n *\n * @param el - Code block element\n *\n * @returns Code block observable\n */\nexport function watchCodeBlock(\n el: HTMLElement\n): Observable<Overflow> {\n return watchElementSize(el)\n .pipe(\n map(({ width }) => {\n const content = getElementContentSize(el)\n return {\n scrollable: content.width > width\n }\n }),\n distinctUntilKeyChanged(\"scrollable\")\n )\n}\n\n/**\n * Mount code block\n *\n * This function ensures that an overflowing code block is focusable through\n * keyboard, so it can be scrolled without a mouse to improve on accessibility.\n * Furthermore, if code annotations are enabled, they are mounted if and only\n * if the code block is currently visible, e.g., not in a hidden content tab.\n *\n * Note that code blocks may be mounted eagerly or lazily. If they're mounted\n * lazily (on first visibility), code annotation anchor links will not work,\n * as they are evaluated on initial page load, and code annotations in general\n * might feel a little bumpier.\n *\n * @param el - Code block element\n * @param options - Options\n *\n * @returns Code block and annotation component observable\n */\nexport function mountCodeBlock(\n el: HTMLElement, options: MountOptions\n): Observable<Component<CodeBlock>> {\n const { matches: hover } = matchMedia(\"(hover)\")\n\n /* Defer mounting of code block - see https://bit.ly/3vHVoVD */\n const factory$ = defer(() => {\n const push$ = new Subject<Overflow>()\n const done$ = push$.pipe(takeLast(1))\n push$.subscribe(({ scrollable }) => {\n if (scrollable && hover)\n el.setAttribute(\"tabindex\", \"0\")\n else\n el.removeAttribute(\"tabindex\")\n })\n\n /* Render button for Clipboard.js integration */\n const content$: Array<Observable<Component<CodeBlock>>> = []\n if (ClipboardJS.isSupported()) {\n if (el.closest(\".copy\") || (\n feature(\"content.code.copy\") && !el.closest(\".no-copy\")\n )) {\n const parent = el.closest(\"pre\")!\n parent.id = `__code_${sequence++}`\n\n /* Mount tooltip, if enabled */\n const button = renderClipboardButton(parent.id)\n parent.insertBefore(button, el)\n if (feature(\"content.tooltips\"))\n content$.push(mountInlineTooltip2(button, { viewport$ }))\n }\n }\n\n /* Handle code annotations */\n const container = el.closest(\".highlight\")\n if (container instanceof HTMLElement) {\n const list = findCandidateList(container)\n\n /* Mount code annotations, if enabled */\n if (typeof list !== \"undefined\" && (\n container.classList.contains(\"annotate\") ||\n feature(\"content.code.annotate\")\n )) {\n const annotations$ = mountAnnotationList(list, el, options)\n content$.push(\n watchElementSize(container)\n .pipe(\n takeUntil(done$),\n map(({ width, height }) => width && height),\n distinctUntilChanged(),\n switchMap(active => active ? annotations$ : EMPTY)\n )\n )\n }\n }\n\n // If the code block has line spans, we can add this additional class to\n // the code block element, which fixes the problem for highlighted code\n // lines not stretching to the entirety of the screen when the code block\n // overflows, e.g., on mobile - see\n const spans = getElements(\":scope > span[id]\", el)\n if (spans.length)\n el.classList.add(\"md-code__content\")\n\n /* Create and return component */\n return watchCodeBlock(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state })),\n mergeWith(...content$)\n )\n })\n\n /* Mount code block lazily */\n if (feature(\"content.lazy\"))\n return watchElementVisibility(el)\n .pipe(\n filter(visible => visible),\n take(1),\n switchMap(() => factory$)\n )\n\n /* Mount code block */\n return factory$\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n filter,\n finalize,\n map,\n merge,\n tap\n} from \"rxjs\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Details\n */\nexport interface Details {\n action: \"open\" | \"close\" /* Details state */\n reveal?: boolean /* Details is revealed */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch details\n *\n * @param el - Details element\n * @param options - Options\n *\n * @returns Details observable\n */\nexport function watchDetails(\n el: HTMLDetailsElement, { target$, print$ }: WatchOptions\n): Observable<Details> {\n let open = true\n return merge(\n\n /* Open and focus details on location target */\n target$\n .pipe(\n map(target => target.closest(\"details:not([open])\")!),\n filter(details => el === details),\n map(() => ({\n action: \"open\", reveal: true\n }) as Details)\n ),\n\n /* Open details on print and close afterwards */\n print$\n .pipe(\n filter(active => active || !open),\n tap(() => open = el.open),\n map(active => ({\n action: active ? \"open\" : \"close\"\n }) as Details)\n )\n )\n}\n\n/**\n * Mount details\n *\n * This function ensures that `details` tags are opened on anchor jumps and\n * prior to printing, so the whole content of the page is visible.\n *\n * @param el - Details element\n * @param options - Options\n *\n * @returns Details component observable\n */\nexport function mountDetails(\n el: HTMLDetailsElement, options: MountOptions\n): Observable<Component<Details>> {\n return defer(() => {\n const push$ = new Subject<Details>()\n push$.subscribe(({ action, reveal }) => {\n el.toggleAttribute(\"open\", action === \"open\")\n if (reveal)\n el.scrollIntoView()\n })\n\n /* Create and return component */\n return watchDetails(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", ".node circle,.node ellipse,.node path,.node polygon,.node rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}marker{fill:var(--md-mermaid-edge-color)!important}.edgeLabel .label rect{fill:#0000}.flowchartTitleText{fill:var(--md-mermaid-label-fg-color)}.label{color:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.label foreignObject{line-height:normal;overflow:visible}.label div .edgeLabel{color:var(--md-mermaid-label-fg-color)}.edgeLabel,.edgeLabel p,.label div .edgeLabel{background-color:var(--md-mermaid-label-bg-color)}.edgeLabel,.edgeLabel p{fill:var(--md-mermaid-label-bg-color);color:var(--md-mermaid-edge-color)}.edgePath .path,.flowchart-link{stroke:var(--md-mermaid-edge-color);stroke-width:.05rem}.edgePath .arrowheadPath{fill:var(--md-mermaid-edge-color);stroke:none}.cluster rect{fill:var(--md-default-fg-color--lightest);stroke:var(--md-default-fg-color--lighter)}.cluster span{color:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}g #flowchart-circleEnd,g #flowchart-circleStart,g #flowchart-crossEnd,g #flowchart-crossStart,g #flowchart-pointEnd,g #flowchart-pointStart{stroke:none}.classDiagramTitleText{fill:var(--md-mermaid-label-fg-color)}g.classGroup line,g.classGroup rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}g.classGroup text{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.classLabel .box{fill:var(--md-mermaid-label-bg-color);background-color:var(--md-mermaid-label-bg-color);opacity:1}.classLabel .label{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.node .divider{stroke:var(--md-mermaid-node-fg-color)}.relation{stroke:var(--md-mermaid-edge-color)}.cardinality{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.cardinality text{fill:inherit!important}defs marker.marker.composition.class path,defs marker.marker.dependency.class path,defs marker.marker.extension.class path{fill:var(--md-mermaid-edge-color)!important;stroke:var(--md-mermaid-edge-color)!important}defs marker.marker.aggregation.class path{fill:var(--md-mermaid-label-bg-color)!important;stroke:var(--md-mermaid-edge-color)!important}.statediagramTitleText{fill:var(--md-mermaid-label-fg-color)}g.stateGroup rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}g.stateGroup .state-title{fill:var(--md-mermaid-label-fg-color)!important;font-family:var(--md-mermaid-font-family)}g.stateGroup .composit{fill:var(--md-mermaid-label-bg-color)}.nodeLabel,.nodeLabel p{color:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}a .nodeLabel{text-decoration:underline}.node circle.state-end,.node circle.state-start,.start-state{fill:var(--md-mermaid-edge-color);stroke:none}.end-state-inner,.end-state-outer{fill:var(--md-mermaid-edge-color)}.end-state-inner,.node circle.state-end{stroke:var(--md-mermaid-label-bg-color)}.transition{stroke:var(--md-mermaid-edge-color)}[id^=state-fork] rect,[id^=state-join] rect{fill:var(--md-mermaid-edge-color)!important;stroke:none!important}.statediagram-cluster.statediagram-cluster .inner{fill:var(--md-default-bg-color)}.statediagram-cluster rect{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}.statediagram-state rect.divider{fill:var(--md-default-fg-color--lightest);stroke:var(--md-default-fg-color--lighter)}defs #statediagram-barbEnd{stroke:var(--md-mermaid-edge-color)}.entityTitleText{fill:var(--md-mermaid-label-fg-color)}.attributeBoxEven,.attributeBoxOdd{fill:var(--md-mermaid-node-bg-color);stroke:var(--md-mermaid-node-fg-color)}.entityBox{fill:var(--md-mermaid-label-bg-color);stroke:var(--md-mermaid-node-fg-color)}.entityLabel{fill:var(--md-mermaid-label-fg-color);font-family:var(--md-mermaid-font-family)}.relationshipLabelBox{fill:var(--md-mermaid-label-bg-color);fill-opacity:1;background-color:var(--md-mermaid-label-bg-color);opacity:1}.relationshipLabel{fill:var(--md-mermaid-label-fg-color)}.relationshipLine{stroke:var(--md-mermaid-edge-color)}defs #ONE_OR_MORE_END *,defs #ONE_OR_MORE_START *,defs #ONLY_ONE_END *,defs #ONLY_ONE_START *,defs #ZERO_OR_MORE_END *,defs #ZERO_OR_MORE_START *,defs #ZERO_OR_ONE_END *,defs #ZERO_OR_ONE_START *{stroke:var(--md-mermaid-edge-color)!important}defs #ZERO_OR_MORE_END circle,defs #ZERO_OR_MORE_START circle{fill:var(--md-mermaid-label-bg-color)}text:not([class]):last-child{fill:var(--md-mermaid-label-fg-color)}.actor{fill:var(--md-mermaid-sequence-actor-bg-color);stroke:var(--md-mermaid-sequence-actor-border-color)}text.actor>tspan{fill:var(--md-mermaid-sequence-actor-fg-color);font-family:var(--md-mermaid-font-family)}line{stroke:var(--md-mermaid-sequence-actor-line-color)}.actor-man circle,.actor-man line{fill:var(--md-mermaid-sequence-actorman-bg-color);stroke:var(--md-mermaid-sequence-actorman-line-color)}.messageLine0,.messageLine1{stroke:var(--md-mermaid-sequence-message-line-color)}.note{fill:var(--md-mermaid-sequence-note-bg-color);stroke:var(--md-mermaid-sequence-note-border-color)}.loopText,.loopText>tspan,.messageText,.noteText>tspan{stroke:none;font-family:var(--md-mermaid-font-family)!important}.messageText{fill:var(--md-mermaid-sequence-message-fg-color)}.loopText,.loopText>tspan{fill:var(--md-mermaid-sequence-loop-fg-color)}.noteText>tspan{fill:var(--md-mermaid-sequence-note-fg-color)}#arrowhead path{fill:var(--md-mermaid-sequence-message-line-color);stroke:none}.loopLine{fill:var(--md-mermaid-sequence-loop-bg-color);stroke:var(--md-mermaid-sequence-loop-border-color)}.labelBox{fill:var(--md-mermaid-sequence-label-bg-color);stroke:none}.labelText,.labelText>span{fill:var(--md-mermaid-sequence-label-fg-color);font-family:var(--md-mermaid-font-family)}.sequenceNumber{fill:var(--md-mermaid-sequence-number-fg-color)}rect.rect{fill:var(--md-mermaid-sequence-box-bg-color);stroke:none}rect.rect+text.text{fill:var(--md-mermaid-sequence-box-fg-color)}defs #sequencenumber{fill:var(--md-mermaid-sequence-number-bg-color)!important}", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n map,\n of,\n shareReplay,\n tap\n} from \"rxjs\"\n\nimport { watchScript } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\nimport themeCSS from \"./index.css\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mermaid diagram\n */\nexport interface Mermaid {}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Mermaid instance observable\n */\nlet mermaid$: Observable<void>\n\n/**\n * Global sequence number for diagrams\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch Mermaid script\n *\n * @returns Mermaid scripts observable\n */\nfunction fetchScripts(): Observable<void> {\n return typeof mermaid === \"undefined\" || mermaid instanceof Element\n ? watchScript(\"https://unpkg.com/mermaid@11/dist/mermaid.min.js\")\n : of(undefined)\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount Mermaid diagram\n *\n * @param el - Code block element\n *\n * @returns Mermaid diagram component observable\n */\nexport function mountMermaid(\n el: HTMLElement\n): Observable<Component<Mermaid>> {\n el.classList.remove(\"mermaid\") // Hack: mitigate https://bit.ly/3CiN6Du\n mermaid$ ||= fetchScripts()\n .pipe(\n tap(() => mermaid.initialize({\n startOnLoad: false,\n themeCSS,\n sequence: {\n actorFontSize: \"16px\", // Hack: mitigate https://bit.ly/3y0NEi3\n messageFontSize: \"16px\",\n noteFontSize: \"16px\"\n }\n })),\n map(() => undefined),\n shareReplay(1)\n )\n\n /* Render diagram */\n mermaid$.subscribe(async () => {\n el.classList.add(\"mermaid\") // Hack: mitigate https://bit.ly/3CiN6Du\n const id = `__mermaid_${sequence++}`\n\n /* Create host element to replace code block */\n const host = h(\"div\", { class: \"mermaid\" })\n const text = el.textContent\n\n /* Render and inject diagram */\n const { svg, fn } = await mermaid.render(id, text)\n\n /* Create a shadow root and inject diagram */\n const shadow = host.attachShadow({ mode: \"closed\" })\n shadow.innerHTML = svg\n\n /* Replace code block with diagram and bind functions */\n el.replaceWith(host)\n fn?.(shadow)\n })\n\n /* Create and return component */\n return mermaid$\n .pipe(\n map(() => ({ ref: el }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Observable, of } from \"rxjs\"\n\nimport { renderTable } from \"~/templates\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Data table\n */\nexport interface DataTable {}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Sentinel for replacement\n */\nconst sentinel = h(\"table\")\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount data table\n *\n * This function wraps a data table in another scrollable container, so it can\n * be smoothly scrolled on smaller screen sizes and won't break the layout.\n *\n * @param el - Data table element\n *\n * @returns Data table component observable\n */\nexport function mountDataTable(\n el: HTMLElement\n): Observable<Component<DataTable>> {\n el.replaceWith(sentinel)\n sentinel.replaceWith(renderTable(el))\n\n /* Create and return component */\n return of({ ref: el })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n asyncScheduler,\n auditTime,\n combineLatest,\n defer,\n endWith,\n filter,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n merge,\n skip,\n startWith,\n subscribeOn,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElement,\n getElementContentOffset,\n getElementContentSize,\n getElementOffset,\n getElementSize,\n getElements,\n watchElementContentOffset,\n watchElementSize,\n watchElementVisibility\n} from \"~/browser\"\nimport { renderTabbedControl } from \"~/templates\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Content tabs\n */\nexport interface ContentTabs {\n active: HTMLLabelElement /* Active tab label */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch content tabs\n *\n * @param inputs - Content tabs input elements\n *\n * @returns Content tabs observable\n */\nexport function watchContentTabs(\n inputs: HTMLInputElement[]\n): Observable<ContentTabs> {\n const initial = inputs.find(input => input.checked) || inputs[0]\n return merge(...inputs.map(input => fromEvent(input, \"change\")\n .pipe(\n map(() => getElement<HTMLLabelElement>(`label[for=\"${input.id}\"]`))\n )\n ))\n .pipe(\n startWith(getElement<HTMLLabelElement>(`label[for=\"${initial.id}\"]`)),\n map(active => ({ active }))\n )\n}\n\n/**\n * Mount content tabs\n *\n * @param el - Content tabs element\n * @param options - Options\n *\n * @returns Content tabs component observable\n */\nexport function mountContentTabs(\n el: HTMLElement, { viewport$, target$ }: MountOptions\n): Observable<Component<ContentTabs>> {\n const container = getElement(\".tabbed-labels\", el)\n const inputs = getElements<HTMLInputElement>(\":scope > input\", el)\n\n /* Render content tab previous button for pagination */\n const prev = renderTabbedControl(\"prev\")\n el.append(prev)\n\n /* Render content tab next button for pagination */\n const next = renderTabbedControl(\"next\")\n el.append(next)\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<ContentTabs>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n combineLatest([push$, watchElementSize(el), watchElementVisibility(el)])\n .pipe(\n takeUntil(done$),\n auditTime(1, animationFrameScheduler)\n )\n .subscribe({\n\n /* Handle emission */\n next([{ active }, size]) {\n const offset = getElementOffset(active)\n const { width } = getElementSize(active)\n\n /* Set tab indicator offset and width */\n el.style.setProperty(\"--md-indicator-x\", `${offset.x}px`)\n el.style.setProperty(\"--md-indicator-width\", `${width}px`)\n\n /* Scroll container to active content tab */\n const content = getElementContentOffset(container)\n if (\n offset.x < content.x ||\n offset.x + width > content.x + size.width\n )\n container.scrollTo({\n left: Math.max(0, offset.x - 16),\n behavior: \"smooth\"\n })\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-indicator-x\")\n el.style.removeProperty(\"--md-indicator-width\")\n }\n })\n\n /* Hide content tab buttons on borders */\n combineLatest([\n watchElementContentOffset(container),\n watchElementSize(container)\n ])\n .pipe(\n takeUntil(done$)\n )\n .subscribe(([offset, size]) => {\n const content = getElementContentSize(container)\n prev.hidden = offset.x < 16\n next.hidden = offset.x > content.width - size.width - 16\n })\n\n /* Paginate content tab container on click */\n merge(\n fromEvent(prev, \"click\").pipe(map(() => -1)),\n fromEvent(next, \"click\").pipe(map(() => +1))\n )\n .pipe(\n takeUntil(done$)\n )\n .subscribe(direction => {\n const { width } = getElementSize(container)\n container.scrollBy({\n left: width * direction,\n behavior: \"smooth\"\n })\n })\n\n /* Switch to content tab target */\n target$\n .pipe(\n takeUntil(done$),\n filter(input => inputs.includes(input as HTMLInputElement))\n )\n .subscribe(input => input.click())\n\n /* Add link to each content tab label */\n container.classList.add(\"tabbed-labels--linked\")\n for (const input of inputs) {\n const label = getElement<HTMLLabelElement>(`label[for=\"${input.id}\"]`)\n label.replaceChildren(h(\"a\", {\n href: `#${label.htmlFor}`,\n tabIndex: -1\n }, ...Array.from(label.childNodes)))\n\n /* Allow to copy link without scrolling to anchor */\n fromEvent<MouseEvent>(label.firstElementChild!, \"click\")\n .pipe(\n takeUntil(done$),\n filter(ev => !(ev.metaKey || ev.ctrlKey)),\n tap(ev => {\n ev.preventDefault()\n ev.stopPropagation()\n })\n )\n // @todo we might need to remove the anchor link on complete\n .subscribe(() => {\n history.replaceState({}, \"\", `#${label.htmlFor}`)\n label.click()\n })\n }\n\n /* Set up linking of content tabs, if enabled */\n if (feature(\"content.tabs.link\"))\n push$.pipe(\n skip(1),\n withLatestFrom(viewport$)\n )\n .subscribe(([{ active }, { offset }]) => {\n const tab = active.innerText.trim()\n if (active.hasAttribute(\"data-md-switching\")) {\n active.removeAttribute(\"data-md-switching\")\n\n /* Determine viewport offset of active tab */\n } else {\n const y = el.offsetTop - offset.y\n\n /* Passively activate other tabs */\n for (const set of getElements(\"[data-tabs]\"))\n for (const input of getElements<HTMLInputElement>(\n \":scope > input\", set\n )) {\n const label = getElement(`label[for=\"${input.id}\"]`)\n if (\n label !== active &&\n label.innerText.trim() === tab\n ) {\n label.setAttribute(\"data-md-switching\", \"\")\n input.click()\n break\n }\n }\n\n /* Bring active tab into view */\n window.scrollTo({\n top: el.offsetTop - y\n })\n\n /* Persist active tabs in local storage */\n const tabs = __md_get<string[]>(\"__tabs\") || []\n __md_set(\"__tabs\", [...new Set([tab, ...tabs])])\n }\n })\n\n /* Pause media (audio, video) on switch - see https://bit.ly/3Bk6cel */\n push$.pipe(takeUntil(done$))\n .subscribe(() => {\n for (const media of getElements<HTMLAudioElement>(\"audio, video\", el))\n media.pause()\n })\n\n /* Create and return component */\n return watchContentTabs(inputs)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n .pipe(\n subscribeOn(asyncScheduler)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Observable, merge } from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { Viewport, getElements } from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport {\n Tooltip,\n mountInlineTooltip2\n} from \"../../tooltip2\"\nimport {\n Annotation,\n mountAnnotationBlock\n} from \"../annotation\"\nimport {\n CodeBlock,\n mountCodeBlock\n} from \"../code\"\nimport {\n Details,\n mountDetails\n} from \"../details\"\nimport {\n Mermaid,\n mountMermaid\n} from \"../mermaid\"\nimport {\n DataTable,\n mountDataTable\n} from \"../table\"\nimport {\n ContentTabs,\n mountContentTabs\n} from \"../tabs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Content\n */\nexport type Content =\n | Annotation\n | CodeBlock\n | ContentTabs\n | DataTable\n | Details\n | Mermaid\n | Tooltip\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n target$: Observable<HTMLElement> /* Location target observable */\n print$: Observable<boolean> /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount content\n *\n * This function mounts all components that are found in the content of the\n * actual article, including code blocks, data tables and details.\n *\n * @param el - Content element\n * @param options - Options\n *\n * @returns Content component observable\n */\nexport function mountContent(\n el: HTMLElement, { viewport$, target$, print$ }: MountOptions\n): Observable<Component<Content>> {\n return merge(\n\n /* Annotations */\n ...getElements(\".annotate:not(.highlight)\", el)\n .map(child => mountAnnotationBlock(child, { target$, print$ })),\n\n /* Code blocks */\n ...getElements(\"pre:not(.mermaid) > code\", el)\n .map(child => mountCodeBlock(child, { target$, print$ })),\n\n /* Mermaid diagrams */\n ...getElements(\"pre.mermaid\", el)\n .map(child => mountMermaid(child)),\n\n /* Data tables */\n ...getElements(\"table:not([class])\", el)\n .map(child => mountDataTable(child)),\n\n /* Details */\n ...getElements(\"details\", el)\n .map(child => mountDetails(child, { target$, print$ })),\n\n /* Content tabs */\n ...getElements(\"[data-tabs]\", el)\n .map(child => mountContentTabs(child, { viewport$, target$ })),\n\n /* Tooltips */\n ...getElements(\"[title]\", el)\n .filter(() => feature(\"content.tooltips\"))\n .map(child => mountInlineTooltip2(child, { viewport$ }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n delay,\n finalize,\n map,\n merge,\n of,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { getElement } from \"~/browser\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Dialog\n */\nexport interface Dialog {\n message: string /* Dialog message */\n active: boolean /* Dialog is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n alert$: Subject<string> /* Alert subject */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n alert$: Subject<string> /* Alert subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch dialog\n *\n * @param _el - Dialog element\n * @param options - Options\n *\n * @returns Dialog observable\n */\nexport function watchDialog(\n _el: HTMLElement, { alert$ }: WatchOptions\n): Observable<Dialog> {\n return alert$\n .pipe(\n switchMap(message => merge(\n of(true),\n of(false).pipe(delay(2000))\n )\n .pipe(\n map(active => ({ message, active }))\n )\n )\n )\n}\n\n/**\n * Mount dialog\n *\n * This function reveals the dialog in the right corner when a new alert is\n * emitted through the subject that is passed as part of the options.\n *\n * @param el - Dialog element\n * @param options - Options\n *\n * @returns Dialog component observable\n */\nexport function mountDialog(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Dialog>> {\n const inner = getElement(\".md-typeset\", el)\n return defer(() => {\n const push$ = new Subject<Dialog>()\n push$.subscribe(({ message, active }) => {\n el.classList.toggle(\"md-dialog--active\", active)\n inner.textContent = message\n })\n\n /* Create and return component */\n return watchDialog(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n animationFrameScheduler,\n asyncScheduler,\n auditTime,\n combineLatest,\n debounceTime,\n defer,\n distinctUntilChanged,\n filter,\n finalize,\n map,\n merge,\n of,\n subscribeOn,\n tap,\n throttleTime\n} from \"rxjs\"\n\nimport {\n ElementOffset,\n getElement,\n getElementContainer,\n getElementOffset,\n getElementSize,\n watchElementContentOffset,\n watchElementFocus,\n watchElementHover\n} from \"~/browser\"\nimport { renderTooltip } from \"~/templates\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Tooltip\n */\nexport interface Tooltip {\n active: boolean /* Tooltip is active */\n offset: ElementOffset /* Tooltip offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Global sequence number for tooltips\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch tooltip\n *\n * This function will append the tooltip temporarily to compute its width,\n * which is necessary for correct centering, and then removing it again.\n *\n * @param el - Tooltip element\n * @param host - Host element\n *\n * @returns Tooltip observable\n */\nexport function watchTooltip(\n el: HTMLElement, host: HTMLElement\n): Observable<Tooltip> {\n document.body.append(el)\n\n /* Compute width and remove tooltip immediately */\n const { width } = getElementSize(el)\n el.style.setProperty(\"--md-tooltip-width\", `${width}px`)\n el.remove()\n\n /* Retrieve and watch containing element */\n const container = getElementContainer(host)\n const scroll$ =\n typeof container !== \"undefined\"\n ? watchElementContentOffset(container)\n : of({ x: 0, y: 0 })\n\n /* Compute tooltip visibility */\n const active$ = merge(\n watchElementFocus(host),\n watchElementHover(host)\n )\n .pipe(\n distinctUntilChanged()\n )\n\n /* Compute tooltip offset */\n return combineLatest([active$, scroll$])\n .pipe(\n map(([active, scroll]) => {\n let { x, y } = getElementOffset(host)\n const size = getElementSize(host)\n\n /**\n * Experimental: fix handling of tables - see https://bit.ly/3TQEj5O\n *\n * If this proves to be a viable fix, we should refactor tooltip\n * positioning and somehow streamline the current process. This might\n * also fix positioning for annotations inside tables, which is another\n * limitation.\n */\n const table = host.closest(\"table\")\n if (table && host.parentElement) {\n x += table.offsetLeft + host.parentElement.offsetLeft\n y += table.offsetTop + host.parentElement.offsetTop\n }\n return {\n active,\n offset: {\n x: x - scroll.x + size.width / 2 - width / 2,\n y: y - scroll.y + size.height + 8\n }\n }\n })\n )\n}\n\n/**\n * Mount tooltip\n *\n * @param el - Host element\n *\n * @returns Tooltip component observable\n */\nexport function mountTooltip(\n el: HTMLElement\n): Observable<Component<Tooltip>> {\n const title = el.title\n if (!title.length)\n return EMPTY\n\n /* Render tooltip and set title from host element */\n const id = `__tooltip_${sequence++}`\n const tooltip = renderTooltip(id, \"inline\")\n const typeset = getElement(\".md-typeset\", tooltip)\n typeset.innerHTML = title\n\n /* Mount component on subscription */\n return defer(() => {\n const push$ = new Subject<Tooltip>()\n push$.subscribe({\n\n /* Handle emission */\n next({ offset }) {\n tooltip.style.setProperty(\"--md-tooltip-x\", `${offset.x}px`)\n tooltip.style.setProperty(\"--md-tooltip-y\", `${offset.y}px`)\n },\n\n /* Handle complete */\n complete() {\n tooltip.style.removeProperty(\"--md-tooltip-x\")\n tooltip.style.removeProperty(\"--md-tooltip-y\")\n }\n })\n\n /* Toggle tooltip presence to mitigate empty lines when copying */\n merge(\n push$.pipe(filter(({ active }) => active)),\n push$.pipe(debounceTime(250), filter(({ active }) => !active))\n )\n .subscribe({\n\n /* Handle emission */\n next({ active }) {\n if (active) {\n el.insertAdjacentElement(\"afterend\", tooltip)\n el.setAttribute(\"aria-describedby\", id)\n el.removeAttribute(\"title\")\n } else {\n tooltip.remove()\n el.removeAttribute(\"aria-describedby\")\n el.setAttribute(\"title\", title)\n }\n },\n\n /* Handle complete */\n complete() {\n tooltip.remove()\n el.removeAttribute(\"aria-describedby\")\n el.setAttribute(\"title\", title)\n }\n })\n\n /* Toggle tooltip visibility */\n push$\n .pipe(\n auditTime(16, animationFrameScheduler)\n )\n .subscribe(({ active }) => {\n tooltip.classList.toggle(\"md-tooltip--active\", active)\n })\n\n // @todo - refactor positioning together with annotations \u2013 there are\n // several things that overlap and are identical in handling\n\n /* Track relative origin of tooltip */\n push$\n .pipe(\n throttleTime(125, animationFrameScheduler),\n filter(() => !!el.offsetParent),\n map(() => el.offsetParent!.getBoundingClientRect()),\n map(({ x }) => x)\n )\n .subscribe({\n\n /* Handle emission */\n next(origin) {\n if (origin)\n tooltip.style.setProperty(\"--md-tooltip-0\", `${-origin}px`)\n else\n tooltip.style.removeProperty(\"--md-tooltip-0\")\n },\n\n /* Handle complete */\n complete() {\n tooltip.style.removeProperty(\"--md-tooltip-0\")\n }\n })\n\n /* Create and return component */\n return watchTooltip(tooltip, el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n .pipe(\n subscribeOn(asyncScheduler)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n combineLatest,\n combineLatestWith,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n filter,\n from,\n ignoreElements,\n map,\n mergeMap,\n mergeWith,\n of,\n shareReplay,\n startWith,\n switchMap,\n takeUntil\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElements,\n watchElementSize,\n watchToggle\n} from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { Main } from \"../../main\"\nimport {\n Tooltip,\n mountTooltip\n} from \"../../tooltip\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Header\n */\nexport interface Header {\n height: number /* Header visible height */\n hidden: boolean /* Header is hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Compute whether the header is hidden\n *\n * If the user scrolls past a certain threshold, the header can be hidden when\n * scrolling down, and shown when scrolling up.\n *\n * @param options - Options\n *\n * @returns Toggle observable\n */\nfunction isHidden({ viewport$ }: WatchOptions): Observable<boolean> {\n if (!feature(\"header.autohide\"))\n return of(false)\n\n /* Compute direction and turning point */\n const direction$ = viewport$\n .pipe(\n map(({ offset: { y } }) => y),\n bufferCount(2, 1),\n map(([a, b]) => [a < b, b] as const),\n distinctUntilKeyChanged(0)\n )\n\n /* Compute whether header should be hidden */\n const hidden$ = combineLatest([viewport$, direction$])\n .pipe(\n filter(([{ offset }, [, y]]) => Math.abs(y - offset.y) > 100),\n map(([, [direction]]) => direction),\n distinctUntilChanged()\n )\n\n /* Compute threshold for hiding */\n const search$ = watchToggle(\"search\")\n return combineLatest([viewport$, search$])\n .pipe(\n map(([{ offset }, search]) => offset.y > 400 && !search),\n distinctUntilChanged(),\n switchMap(active => active ? hidden$ : of(false)),\n startWith(false)\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch header\n *\n * @param el - Header element\n * @param options - Options\n *\n * @returns Header observable\n */\nexport function watchHeader(\n el: HTMLElement, options: WatchOptions\n): Observable<Header> {\n return defer(() => combineLatest([\n watchElementSize(el),\n isHidden(options)\n ]))\n .pipe(\n map(([{ height }, hidden]) => ({\n height,\n hidden\n })),\n distinctUntilChanged((a, b) => (\n a.height === b.height &&\n a.hidden === b.hidden\n )),\n shareReplay(1)\n )\n}\n\n/**\n * Mount header\n *\n * This function manages the different states of the header, i.e. whether it's\n * hidden or rendered with a shadow. This depends heavily on the main area.\n *\n * @param el - Header element\n * @param options - Options\n *\n * @returns Header component observable\n */\nexport function mountHeader(\n el: HTMLElement, { header$, main$ }: MountOptions\n): Observable<Component<Header | Tooltip>> {\n return defer(() => {\n const push$ = new Subject<Main>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$\n .pipe(\n distinctUntilKeyChanged(\"active\"),\n combineLatestWith(header$)\n )\n .subscribe(([{ active }, { hidden }]) => {\n el.classList.toggle(\"md-header--shadow\", active && !hidden)\n el.hidden = hidden\n })\n\n /* Mount tooltips, if enabled */\n const tooltips = from(getElements(\"[title]\", el))\n .pipe(\n filter(() => feature(\"content.tooltips\")),\n mergeMap(child => mountTooltip(child))\n )\n\n /* Link to main area */\n main$.subscribe(push$)\n\n /* Create and return component */\n return header$\n .pipe(\n takeUntil(done$),\n map(state => ({ ref: el, ...state })),\n mergeWith(tooltips.pipe(takeUntil(done$)))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n distinctUntilKeyChanged,\n finalize,\n map,\n tap\n} from \"rxjs\"\n\nimport {\n Viewport,\n getElementSize,\n getOptionalElement,\n watchViewportAt\n} from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { Header } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Header\n */\nexport interface HeaderTitle {\n active: boolean /* Header title is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch header title\n *\n * @param el - Heading element\n * @param options - Options\n *\n * @returns Header title observable\n */\nexport function watchHeaderTitle(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<HeaderTitle> {\n return watchViewportAt(el, { viewport$, header$ })\n .pipe(\n map(({ offset: { y } }) => {\n const { height } = getElementSize(el)\n return {\n active: y >= height\n }\n }),\n distinctUntilKeyChanged(\"active\")\n )\n}\n\n/**\n * Mount header title\n *\n * This function swaps the header title from the site title to the title of the\n * current page when the user scrolls past the first headline.\n *\n * @param el - Header title element\n * @param options - Options\n *\n * @returns Header title component observable\n */\nexport function mountHeaderTitle(\n el: HTMLElement, options: MountOptions\n): Observable<Component<HeaderTitle>> {\n return defer(() => {\n const push$ = new Subject<HeaderTitle>()\n push$.subscribe({\n\n /* Handle emission */\n next({ active }) {\n el.classList.toggle(\"md-header__title--active\", active)\n },\n\n /* Handle complete */\n complete() {\n el.classList.remove(\"md-header__title--active\")\n }\n })\n\n /* Obtain headline, if any */\n const heading = getOptionalElement(\".md-content h1\")\n if (typeof heading === \"undefined\")\n return EMPTY\n\n /* Create and return component */\n return watchHeaderTitle(heading, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n map,\n switchMap\n} from \"rxjs\"\n\nimport {\n Viewport,\n watchElementSize\n} from \"~/browser\"\n\nimport { Header } from \"../header\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Main area\n */\nexport interface Main {\n offset: number /* Main area top offset */\n height: number /* Main area visible height */\n active: boolean /* Main area is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch main area\n *\n * This function returns an observable that computes the visual parameters of\n * the main area which depends on the viewport vertical offset and height, as\n * well as the height of the header element, if the header is fixed.\n *\n * @param el - Main area element\n * @param options - Options\n *\n * @returns Main area observable\n */\nexport function watchMain(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<Main> {\n\n /* Compute necessary adjustment for header */\n const adjust$ = header$\n .pipe(\n map(({ height }) => height),\n distinctUntilChanged()\n )\n\n /* Compute the main area's top and bottom borders */\n const border$ = adjust$\n .pipe(\n switchMap(() => watchElementSize(el)\n .pipe(\n map(({ height }) => ({\n top: el.offsetTop,\n bottom: el.offsetTop + height\n })),\n distinctUntilKeyChanged(\"bottom\")\n )\n )\n )\n\n /* Compute the main area's offset, visible height and if we scrolled past */\n return combineLatest([adjust$, border$, viewport$])\n .pipe(\n map(([header, { top, bottom }, { offset: { y }, size: { height } }]) => {\n height = Math.max(0, height\n - Math.max(0, top - y, header)\n - Math.max(0, height + y - bottom)\n )\n return {\n offset: top - header,\n height,\n active: top - header <= y\n }\n }),\n distinctUntilChanged((a, b) => (\n a.offset === b.offset &&\n a.height === b.height &&\n a.active === b.active\n ))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n defer,\n filter,\n finalize,\n fromEvent,\n map,\n mergeMap,\n observeOn,\n of,\n repeat,\n shareReplay,\n skip,\n startWith,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { getElements, watchMedia } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\nimport {\n Component,\n getComponentElement\n} from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Palette colors\n */\nexport interface PaletteColor {\n media?: string /* Media query */\n scheme?: string /* Color scheme */\n primary?: string /* Primary color */\n accent?: string /* Accent color */\n}\n\n/**\n * Palette\n */\nexport interface Palette {\n index: number /* Palette index */\n color: PaletteColor /* Palette colors */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch color palette\n *\n * @param inputs - Color palette element\n *\n * @returns Color palette observable\n */\nexport function watchPalette(\n inputs: HTMLInputElement[]\n): Observable<Palette> {\n const current = __md_get<Palette>(\"__palette\") || {\n index: inputs.findIndex(input => matchMedia(\n input.getAttribute(\"data-md-color-media\")!\n ).matches)\n }\n\n /* Emit changes in color palette */\n const index = Math.max(0, Math.min(current.index, inputs.length - 1))\n return of(...inputs)\n .pipe(\n mergeMap(input => fromEvent(input, \"change\").pipe(map(() => input))),\n startWith(inputs[index]),\n map(input => ({\n index: inputs.indexOf(input),\n color: {\n media: input.getAttribute(\"data-md-color-media\"),\n scheme: input.getAttribute(\"data-md-color-scheme\"),\n primary: input.getAttribute(\"data-md-color-primary\"),\n accent: input.getAttribute(\"data-md-color-accent\")\n }\n } as Palette)),\n shareReplay(1)\n )\n}\n\n/**\n * Mount color palette\n *\n * @param el - Color palette element\n *\n * @returns Color palette component observable\n */\nexport function mountPalette(\n el: HTMLElement\n): Observable<Component<Palette>> {\n const inputs = getElements<HTMLInputElement>(\"input\", el)\n const meta = h(\"meta\", { name: \"theme-color\" })\n document.head.appendChild(meta)\n\n // Add color scheme meta tag\n const scheme = h(\"meta\", { name: \"color-scheme\" })\n document.head.appendChild(scheme)\n\n /* Mount component on subscription */\n const media$ = watchMedia(\"(prefers-color-scheme: light)\")\n return defer(() => {\n const push$ = new Subject<Palette>()\n push$.subscribe(palette => {\n document.body.setAttribute(\"data-md-color-switching\", \"\")\n\n /* Retrieve color palette for system preference */\n if (palette.color.media === \"(prefers-color-scheme)\") {\n const media = matchMedia(\"(prefers-color-scheme: light)\")\n const input = document.querySelector(media.matches\n ? \"[data-md-color-media='(prefers-color-scheme: light)']\"\n : \"[data-md-color-media='(prefers-color-scheme: dark)']\"\n )!\n\n /* Retrieve colors for system preference */\n palette.color.scheme = input.getAttribute(\"data-md-color-scheme\")!\n palette.color.primary = input.getAttribute(\"data-md-color-primary\")!\n palette.color.accent = input.getAttribute(\"data-md-color-accent\")!\n }\n\n /* Set color palette */\n for (const [key, value] of Object.entries(palette.color))\n document.body.setAttribute(`data-md-color-${key}`, value)\n\n /* Set toggle visibility */\n for (let index = 0; index < inputs.length; index++) {\n const label = inputs[index].nextElementSibling\n if (label instanceof HTMLElement)\n label.hidden = palette.index !== index\n }\n\n /* Persist preference in local storage */\n __md_set(\"__palette\", palette)\n })\n\n // Handle color switch on Enter or Space - see https://t.ly/YIhVj\n fromEvent<KeyboardEvent>(el, \"keydown\").pipe(\n filter(ev => ev.key === \"Enter\"),\n withLatestFrom(push$, (_, palette) => palette)\n )\n .subscribe(({ index }) => {\n index = (index + 1) % inputs.length\n inputs[index].click()\n inputs[index].focus()\n })\n\n /* Update theme-color meta tag */\n push$\n .pipe(\n map(() => {\n const header = getComponentElement(\"header\")\n const style = window.getComputedStyle(header)\n\n // Set color scheme\n scheme.content = style.colorScheme\n\n /* Return color in hexadecimal format */\n return style.backgroundColor.match(/\\d+/g)!\n .map(value => (+value).toString(16).padStart(2, \"0\"))\n .join(\"\")\n })\n )\n .subscribe(color => meta.content = `#${color}`)\n\n /* Revert transition durations after color switch */\n push$.pipe(observeOn(asyncScheduler))\n .subscribe(() => {\n document.body.removeAttribute(\"data-md-color-switching\")\n })\n\n /* Create and return component */\n return watchPalette(inputs)\n .pipe(\n takeUntil(media$.pipe(skip(1))),\n repeat(),\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n finalize,\n map,\n tap\n} from \"rxjs\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Progress indicator\n */\nexport interface Progress {\n value: number // Progress value\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n progress$: Subject<number> // Progress subject\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount progress indicator\n *\n * @param el - Progress indicator element\n * @param options - Options\n *\n * @returns Progress indicator component observable\n */\nexport function mountProgress(\n el: HTMLElement, { progress$ }: MountOptions\n): Observable<Component<Progress>> {\n\n // Mount component on subscription\n return defer(() => {\n const push$ = new Subject<Progress>()\n push$.subscribe(({ value }) => {\n el.style.setProperty(\"--md-progress-value\", `${value}`)\n })\n\n // Create and return component\n return progress$\n .pipe(\n tap(value => push$.next({ value })),\n finalize(() => push$.complete()),\n map(value => ({ ref: el, value }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport ClipboardJS from \"clipboard\"\nimport {\n Observable,\n Subject,\n map,\n tap\n} from \"rxjs\"\n\nimport { translation } from \"~/_\"\nimport { getElement } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n alert$: Subject<string> /* Alert subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Extract text to copy\n *\n * @param el - HTML element\n *\n * @returns Extracted text\n */\nfunction extract(el: HTMLElement): string {\n el.setAttribute(\"data-md-copying\", \"\")\n const copy = el.closest(\"[data-copy]\")\n const text = copy\n ? copy.getAttribute(\"data-copy\")!\n : el.innerText\n el.removeAttribute(\"data-md-copying\")\n return text.trimEnd()\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up Clipboard.js integration\n *\n * @param options - Options\n */\nexport function setupClipboardJS(\n { alert$ }: SetupOptions\n): void {\n if (ClipboardJS.isSupported()) {\n new Observable<ClipboardJS.Event>(subscriber => {\n new ClipboardJS(\"[data-clipboard-target], [data-clipboard-text]\", {\n text: el => (\n el.getAttribute(\"data-clipboard-text\")! ||\n extract(getElement(\n el.getAttribute(\"data-clipboard-target\")!\n ))\n )\n })\n .on(\"success\", ev => subscriber.next(ev))\n })\n .pipe(\n tap(ev => {\n const trigger = ev.trigger as HTMLElement\n trigger.focus()\n }),\n map(() => translation(\"clipboard.copied\"))\n )\n .subscribe(alert$)\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n catchError,\n map,\n of\n} from \"rxjs\"\n\nimport {\n getElement,\n getElements,\n requestXML\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Sitemap, i.e. a list of URLs\n */\nexport type Sitemap = Map<string, URL[]>\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Resolve URL to the given base URL\n *\n * When serving the site with instant navigation, MkDocs will set the hostname\n * to the value as specified in `dev_addr`, but the browser allows for several\n * hostnames to be used: `localhost`, `127.0.0.1` or even `0.0.0.0`, depending\n * on configuration. This function resolves the URL to the given hostname.\n *\n * @param url - URL\n * @param base - Base URL\n *\n * @returns Resolved URL\n */\nfunction resolve(url: URL, base: URL) {\n url.protocol = base.protocol\n url.hostname = base.hostname\n return url\n}\n\n/**\n * Extract sitemap from document\n *\n * This function extracts the URLs and alternate links from the document, and\n * associates alternate links to the original URL as found in `loc`, allowing\n * the browser to navigate to the correct page when switching languages. The\n * format of the sitemap is expected to adhere to:\n *\n * ``` xml\n * <urlset>\n * <url>\n * <loc>...</loc>\n * <xhtml:link rel=\"alternate\" hreflang=\"en\" href=\"...\"/>\n * <xhtml:link rel=\"alternate\" hreflang=\"de\" href=\"...\"/>\n * ...\n * </url>\n * ...\n * </urlset>\n * ```\n *\n * @param document - Document\n * @param base - Base URL\n *\n * @returns Sitemap\n */\nfunction extract(document: Document, base: URL): Sitemap {\n const sitemap: Sitemap = new Map()\n for (const el of getElements(\"url\", document)) {\n const url = getElement(\"loc\", el)\n\n // Create entry for location and add it to the list of links\n const links = [resolve(new URL(url.textContent!), base)]\n sitemap.set(`${links[0]}`, links)\n\n // Attach alternate links to current entry\n for (const link of getElements(\"[rel=alternate]\", el)) {\n const href = link.getAttribute(\"href\")\n if (href != null)\n links.push(resolve(new URL(href), base))\n }\n }\n\n // Return sitemap\n return sitemap\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch the sitemap for the given base URL\n *\n * If a network or parsing error occurs, we just default to an empty sitemap,\n * which means the caller should fall back to regular navigation.\n *\n * @param base - Base URL\n *\n * @returns Sitemap observable\n */\nexport function fetchSitemap(base: URL | string): Observable<Sitemap> {\n return requestXML(new URL(\"sitemap.xml\", base))\n .pipe(\n map(document => extract(document, new URL(base))),\n catchError(() => of(new Map())),\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n catchError,\n combineLatestWith,\n concat,\n debounceTime,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n fromEvent,\n ignoreElements,\n map,\n merge,\n of,\n share,\n switchMap,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { configuration, feature } from \"~/_\"\nimport {\n Viewport,\n getElements,\n getLocation,\n getOptionalElement,\n requestHTML,\n setLocation,\n setLocationHash\n} from \"~/browser\"\nimport { getComponentElement } from \"~/components\"\n\nimport { Sitemap, fetchSitemap } from \"../sitemap\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n location$: Subject<URL> // Location subject\n viewport$: Observable<Viewport> // Viewport observable\n progress$: Subject<number> // Progress subject\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Handle clicks on internal URLs while skipping external URLs\n *\n * @param ev - Mouse event\n * @param sitemap - Sitemap\n *\n * @returns URL observable\n */\nfunction handle(\n ev: MouseEvent, sitemap: Sitemap\n): Observable<URL> {\n if (!(ev.target instanceof Element))\n return EMPTY\n\n // Skip, as target is not within a link - clicks on non-link elements are\n // also captured, which we need to exclude from processing\n const el = ev.target.closest(\"a\")\n if (el === null)\n return EMPTY\n\n // Skip, as link opens in new window - we now know we have captured a click\n // on a link, but the link either has a `target` property defined, or the\n // user pressed the `meta` or `ctrl` key to open it in a new window. Thus,\n // we need to filter this event as well.\n if (el.target || ev.metaKey || ev.ctrlKey)\n return EMPTY\n\n // Next, we must check if the URL is relevant for us, i.e., if it's an\n // internal link to a page that is managed by MkDocs. Only then we can be\n // sure that the structure of the page to be loaded adheres to the current\n // document structure and can subsequently be injected into it without doing\n // a full reload. For this reason, we must canonicalize the URL by removing\n // all search parameters and hash fragments.\n const url = new URL(el.href)\n url.search = url.hash = \"\"\n\n // Skip, if URL is not included in the sitemap - this could be the case when\n // linking between versions or languages, or to another page that the author\n // included as part of the build, but that is not managed by MkDocs. In that\n // case we must not continue with instant navigation.\n if (!sitemap.has(`${url}`))\n return EMPTY\n\n // We now know that we have a link to an internal page, so we prevent the\n // browser from navigation and emit the URL for instant navigation. Note that\n // this also includes anchor links, which means we need to implement anchor\n // positioning ourselves. The reason for this is that if we wouldn't manage\n // anchor links as well, scroll restoration will not work correctly (e.g.\n // following an anchor link and scrolling).\n ev.preventDefault()\n return of(new URL(el.href))\n}\n\n/**\n * Create a map of head elements for lookup and replacement\n *\n * @param document - Document\n *\n * @returns Tag map\n */\nfunction head(document: Document): Map<string, HTMLElement> {\n const tags = new Map<string, HTMLElement>()\n for (const el of getElements(\":scope > *\", document.head))\n tags.set(el.outerHTML, el)\n\n // Return tag map\n return tags\n}\n\n/**\n * Resolve relative URLs in the given document\n *\n * This function resolves relative `href` and `src` attributes, which can belong\n * to all sorts of tags, like meta tags, links, images, scripts and more.\n *\n * @param document - Document\n *\n * @returns Document observable\n */\nfunction resolve(document: Document): Observable<Document> {\n for (const el of getElements(\"[href], [src]\", document))\n for (const key of [\"href\", \"src\"]) {\n const value = el.getAttribute(key)\n if (value && !/^(?:[a-z]+:)?\\/\\//i.test(value)) {\n // @ts-expect-error - trick: self-assign to resolve URL\n el[key] = el[key]\n break\n }\n }\n\n // Return document observable\n return of(document)\n}\n\n/**\n * Inject the contents of a document into the current one\n *\n * @param next - Next document\n *\n * @returns Document observable\n */\nfunction inject(next: Document): Observable<Document> {\n for (const selector of [\n \"[data-md-component=announce]\",\n \"[data-md-component=container]\",\n \"[data-md-component=header-topic]\",\n \"[data-md-component=outdated]\",\n \"[data-md-component=logo]\",\n \"[data-md-component=skip]\",\n ...feature(\"navigation.tabs.sticky\")\n ? [\"[data-md-component=tabs]\"]\n : []\n ]) {\n const source = getOptionalElement(selector)\n const target = getOptionalElement(selector, next)\n if (\n typeof source !== \"undefined\" &&\n typeof target !== \"undefined\"\n ) {\n source.replaceWith(target)\n }\n }\n\n // Update meta tags\n const tags = head(document)\n for (const [html, el] of head(next))\n if (tags.has(html))\n tags.delete(html)\n else\n document.head.appendChild(el)\n\n // Remove meta tags that are not present in the new document\n for (const el of tags.values()) {\n const name = el.getAttribute(\"name\")\n // @todo - find a better way to handle attributes we add dynamically in\n // other components without mounting components on every navigation, as\n // this might impact overall performance - see https://t.ly/ehp_O\n if (name !== \"theme-color\" && name !== \"color-scheme\")\n el.remove()\n }\n\n // After components and meta tags were replaced, re-evaluate scripts\n // that were provided by the author as part of Markdown files\n const container = getComponentElement(\"container\")\n return concat(getElements(\"script\", container))\n .pipe(\n switchMap(el => {\n const script = next.createElement(\"script\")\n if (el.src) {\n for (const name of el.getAttributeNames())\n script.setAttribute(name, el.getAttribute(name)!)\n el.replaceWith(script)\n\n // Complete when script is loaded\n return new Observable(observer => {\n script.onload = () => observer.complete()\n })\n\n // Complete immediately\n } else {\n script.textContent = el.textContent\n el.replaceWith(script)\n return EMPTY\n }\n }),\n ignoreElements(),\n endWith(document)\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up instant navigation\n *\n * This is a heavily orchestrated operation - see inline comments to learn how\n * this works with Material for MkDocs, and how you can hook into it.\n *\n * @param options - Options\n *\n * @returns Document observable\n */\nexport function setupInstantNavigation(\n { location$, viewport$, progress$ }: SetupOptions\n): Observable<Document> {\n const config = configuration()\n if (location.protocol === \"file:\")\n return EMPTY\n\n // Load sitemap immediately, so we have it available when the user initiates\n // the first navigation request without any perceivable delay\n const sitemap$ = fetchSitemap(config.base)\n\n // Since we might be on a slow connection, the user might trigger multiple\n // instant navigation events that overlap. MkDocs produces relative URLs for\n // all internal links, which becomes a problem in this case, because we need\n // to change the base URL the moment the user clicks a link that should be\n // intercepted in order to be consistent with popstate, which means that the\n // base URL would now be incorrect when resolving another relative link from\n // the same site. For this reason we always resolve all relative links to\n // absolute links, so we can be sure this never happens.\n of(document)\n .subscribe(resolve)\n\n // --------------------------------------------------------------------------\n // Navigation interception\n // --------------------------------------------------------------------------\n\n // Intercept navigation - to keep the number of event listeners down we use\n // the fact that uncaptured events bubble up to the body. This has the nice\n // property that we don't need to detach and then re-attach event listeners\n // when the document is replaced after a navigation event.\n const instant$ =\n fromEvent<MouseEvent>(document.body, \"click\")\n .pipe(\n combineLatestWith(sitemap$),\n switchMap(([ev, sitemap]) => handle(ev, sitemap)),\n share()\n )\n\n // Intercept history change events, e.g. when the user uses the browser's\n // back or forward buttons, and emit new location for fetching and parsing\n const history$ =\n fromEvent<PopStateEvent>(window, \"popstate\")\n .pipe(\n map(getLocation),\n share()\n )\n\n // While it would be better UX to defer navigation events until the document\n // is fully fetched and parsed, we must schedule it here to synchronize with\n // popstate events, as they are emitted immediately. Moreover we need to\n // store the current viewport offset for scroll restoration later on.\n instant$.pipe(withLatestFrom(viewport$))\n .subscribe(([url, { offset }]) => {\n history.replaceState(offset, \"\")\n history.pushState(null, \"\", url)\n })\n\n // Emit URLs that should be fetched via instant navigation on location subject\n // which was passed into this function. The state of instant navigation can be\n // intercepted by other parts of the application, which can synchronously back\n // up or restore state before or after instant navigation happens.\n merge(instant$, history$)\n .subscribe(location$)\n\n // --------------------------------------------------------------------------\n // Fetching and parsing\n // --------------------------------------------------------------------------\n\n // Fetch document - we deduplicate requests to the same location, so we don't\n // end up with multiple requests for the same page. We use `switchMap`, since\n // we want to cancel the previous request when a new one is triggered, which\n // is automatically handled by the observable returned by `request`. This is\n // essential to ensure a good user experience, as we don't want to load pages\n // that are not needed anymore, e.g., when the user clicks multiple links in\n // quick succession or on slow connections. If the request fails for some\n // reason, we fall back and use regular navigation, forcing a reload.\n const document$ =\n location$.pipe(\n distinctUntilKeyChanged(\"pathname\"),\n switchMap(url => requestHTML(url, { progress$ })\n .pipe(\n catchError(() => {\n setLocation(url, true)\n return EMPTY\n })\n )\n ),\n\n // The document was successfully fetched and parsed, so we can inject its\n // contents into the currently active document\n switchMap(resolve),\n switchMap(inject),\n share()\n )\n\n // --------------------------------------------------------------------------\n // Scroll restoration\n // --------------------------------------------------------------------------\n\n // Handle scroll restoration - we must restore the viewport offset after the\n // document has been fetched and injected, and every time the user clicks an\n // anchor that leads to an element on the same page, which might also happen\n // when the user uses the back or forward button.\n merge(\n document$.pipe(withLatestFrom(location$, (_, url) => url)),\n\n // Handle instant navigation events that are triggered by the user clicking\n // on an anchor link with a hash fragment different from the current one, as\n // well as from popstate events, which are emitted when the user navigates\n // back and forth between pages.\n document$.pipe(\n switchMap(() => location$),\n distinctUntilKeyChanged(\"hash\"),\n ),\n\n // Handle instant navigation events that are triggered by the user clicking\n // on an anchor link with the same hash fragment as the current one in the\n // URL. It is essential that we only intercept those from instant navigation\n // events and not from history change events, or we'll end up in and endless\n // loop. The top-level history entry must be removed, as it will be replaced\n // with a new one, which would otherwise lead to a duplicate entry.\n location$.pipe(\n distinctUntilChanged((a, b) => (\n a.pathname === b.pathname &&\n a.hash === b.hash\n )),\n switchMap(() => instant$),\n tap(() => history.back())\n )\n )\n .subscribe(url => {\n\n // Check if the current history entry has a state, which happens when the\n // user presses the back or forward button to visit a page we've already\n // seen. If there's no state, it means a new page was visited and we must\n // scroll to the top, unless an anchor is given.\n if (history.state !== null || !url.hash) {\n window.scrollTo(0, history.state?.y ?? 0)\n } else {\n history.scrollRestoration = \"auto\"\n setLocationHash(url.hash)\n history.scrollRestoration = \"manual\"\n }\n })\n\n // Disable scroll restoration when an instant navigation event occurs, so the\n // browser does not immediately set the viewport offset to the prior history\n // entry, scrolling to the position on the same page, which would look odd.\n // Instead, we manually restore the position once the page has loaded.\n location$.subscribe(() => {\n history.scrollRestoration = \"manual\"\n })\n\n // Enable scroll restoration before window unloads - this is essential to\n // ensure that full reloads (F5) restore the viewport offset correctly. If\n // only popstate events wouldn't reset the viewport offset prior to their\n // emission, we could just reset this in popstate. Meh.\n fromEvent(window, \"beforeunload\")\n .subscribe(() => {\n history.scrollRestoration = \"auto\"\n })\n\n // Track viewport offset, so we can restore it when the user navigates back\n // and forth between pages. Note that this must be debounced and cannot be\n // done in popstate, as popstate has already removed the entry from the\n // history, which means it is too late.\n viewport$.pipe(\n distinctUntilKeyChanged(\"offset\"),\n debounceTime(100)\n )\n .subscribe(({ offset }) => {\n history.replaceState(offset, \"\")\n })\n\n // Return document observable\n return document$\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\n\nimport { SearchConfig } from \"../config\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search highlight function\n *\n * @param value - Value\n *\n * @returns Highlighted value\n */\nexport type SearchHighlightFn = (value: string) => string\n\n/**\n * Search highlight factory function\n *\n * @param query - Query value\n *\n * @returns Search highlight function\n */\nexport type SearchHighlightFactoryFn = (query: string) => SearchHighlightFn\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a search highlighter\n *\n * @param config - Search configuration\n *\n * @returns Search highlight factory function\n */\nexport function setupSearchHighlighter(\n config: SearchConfig\n): SearchHighlightFactoryFn {\n // Hack: temporarily remove pure lookaheads and lookbehinds\n const regex = config.separator.split(\"|\").map(term => {\n const temp = term.replace(/(\\(\\?[!=<][^)]+\\))/g, \"\")\n return temp.length === 0 ? \"\uFFFD\" : term\n })\n .join(\"|\")\n\n const separator = new RegExp(regex, \"img\")\n const highlight = (_: unknown, data: string, term: string) => {\n return `${data}<mark data-md-highlight>${term}</mark>`\n }\n\n /* Return factory function */\n return (query: string) => {\n query = query\n .replace(/[\\s*+\\-:~^]+/g, \" \")\n .trim()\n\n /* Create search term match expression */\n const match = new RegExp(`(^|${config.separator}|)(${\n query\n .replace(/[|\\\\{}()[\\]^$+*?.-]/g, \"\\\\$&\")\n .replace(separator, \"|\")\n })`, \"img\")\n\n /* Highlight string value */\n return value => escapeHTML(value)\n .replace(match, highlight)\n .replace(/<\\/mark>(\\s+)<mark[^>]*>/img, \"$1\")\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { SearchResult } from \"../../_\"\nimport { SearchIndex } from \"../../config\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search message type\n */\nexport const enum SearchMessageType {\n SETUP, /* Search index setup */\n READY, /* Search index ready */\n QUERY, /* Search query */\n RESULT /* Search results */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Message containing the data necessary to setup the search index\n */\nexport interface SearchSetupMessage {\n type: SearchMessageType.SETUP /* Message type */\n data: SearchIndex /* Message data */\n}\n\n/**\n * Message indicating the search index is ready\n */\nexport interface SearchReadyMessage {\n type: SearchMessageType.READY /* Message type */\n}\n\n/**\n * Message containing a search query\n */\nexport interface SearchQueryMessage {\n type: SearchMessageType.QUERY /* Message type */\n data: string /* Message data */\n}\n\n/**\n * Message containing results for a search query\n */\nexport interface SearchResultMessage {\n type: SearchMessageType.RESULT /* Message type */\n data: SearchResult /* Message data */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Message exchanged with the search worker\n */\nexport type SearchMessage =\n | SearchSetupMessage\n | SearchReadyMessage\n | SearchQueryMessage\n | SearchResultMessage\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Type guard for search ready messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchReadyMessage(\n message: SearchMessage\n): message is SearchReadyMessage {\n return message.type === SearchMessageType.READY\n}\n\n/**\n * Type guard for search result messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchResultMessage(\n message: SearchMessage\n): message is SearchResultMessage {\n return message.type === SearchMessageType.RESULT\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n ObservableInput,\n Subject,\n first,\n merge,\n of,\n switchMap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport { watchToggle, watchWorker } from \"~/browser\"\n\nimport { SearchIndex } from \"../../config\"\nimport {\n SearchMessage,\n SearchMessageType\n} from \"../message\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up search worker\n *\n * This function creates and initializes a web worker that is used for search,\n * so that the user interface doesn't freeze. In general, the application does\n * not care how search is implemented, as long as the web worker conforms to\n * the format expected by the application as defined in `SearchMessage`. This\n * allows the author to implement custom search functionality, by providing a\n * custom web worker via configuration.\n *\n * Material for MkDocs' built-in search implementation makes use of Lunr.js, an\n * efficient and fast implementation for client-side search. Leveraging a tiny\n * iframe-based web worker shim, search is even supported for the `file://`\n * protocol, enabling search for local non-hosted builds.\n *\n * If the protocol is `file://`, search initialization is deferred to mitigate\n * freezing, as it's now synchronous by design - see https://bit.ly/3C521EO\n *\n * @see https://bit.ly/3igvtQv - How to implement custom search\n *\n * @param url - Worker URL\n * @param index$ - Search index observable input\n *\n * @returns Search worker\n */\nexport function setupSearchWorker(\n url: string, index$: ObservableInput<SearchIndex>\n): Subject<SearchMessage> {\n const worker$ = watchWorker<SearchMessage>(url)\n merge(\n of(location.protocol !== \"file:\"),\n watchToggle(\"search\")\n )\n .pipe(\n first(active => active),\n switchMap(() => index$)\n )\n .subscribe(({ config, docs }) => worker$.next({\n type: SearchMessageType.SETUP,\n data: {\n config,\n docs,\n options: {\n suggest: feature(\"search.suggest\")\n }\n }\n }))\n\n /* Return search worker */\n return worker$\n}\n", "import { Sitemap } from \"../../sitemap\"\n\n/** See docstring for `selectedVersionCorrespondingURL` for the meaning of these fields. */\ntype CorrespondingURLParams = {\n selectedVersionSitemap: Sitemap\n selectedVersionBaseURL: URL\n currentLocation: URL\n currentBaseURL: string\n}\n\n/**\n * Choose a URL to navigate to when the user chooses a version in the version\n * selector.\n *\n * The parameters in `params` are named as follows, in order to make it clearer\n * which parameter means what when invoking the function:\n *\n * - selectedVersionSitemap: Sitemap - as obtained by fetchSitemap from `${selectedVersionBaseURL}/sitemap.xml`\n *\n * - selectedVersionBaseURL: URL - usually `${currentBaseURL}/../selectedVersion`\n *\n * - currentLocation: URL - current web browser location\n *\n * - currentBaseURL: string - as obtained from `config.base`\n *\n * @param params - arguments with the meanings explained above.\n * @returns the URL to navigate to or null if we can't be sure that the\n * corresponding page to the current page exists in the selected version\n */\nexport function selectedVersionCorrespondingURL(\n params: CorrespondingURLParams\n): URL | undefined {\n const {selectedVersionSitemap,\n selectedVersionBaseURL,\n currentLocation,\n currentBaseURL} = params\n const current_path = safeURLParse(currentBaseURL)?.pathname\n if (current_path === undefined) {\n return\n }\n const currentRelativePath = stripPrefix(currentLocation.pathname, current_path)\n if (currentRelativePath === undefined) {\n return\n }\n const sitemapCommonPrefix = shortestCommonPrefix(selectedVersionSitemap.keys())\n if (!selectedVersionSitemap.has(sitemapCommonPrefix)) {\n // We could also check that `commonSitemapPrefix` ends in the canonical version,\n // similarly to https://github.com/squidfunk/mkdocs-material/pull/7227. However,\n // I don't believe that Mike/MkDocs ever generate sitemaps where it would matter\n return\n }\n\n const potentialSitemapURL = safeURLParse(currentRelativePath, sitemapCommonPrefix)\n if (!potentialSitemapURL || !selectedVersionSitemap.has(potentialSitemapURL.href)) {\n return\n }\n\n const result = safeURLParse(currentRelativePath, selectedVersionBaseURL)\n if (!result) {\n return\n }\n result.hash = currentLocation.hash\n result.search = currentLocation.search\n return result\n}\n\n/**\n * A version of `new URL` that never throws. A polyfill for URL.parse() which is\n * not yet ubuquitous.\n *\n * @param url - passed to `new URL` constructor\n * @param base - passed to `new URL` constructor\n *\n * @returns `new URL(url, base)` or undefined if the URL is invalid.\n */\nfunction safeURLParse(url: string|URL, base?: string|URL): URL | undefined {\n try {\n return new URL(url, base)\n } catch {\n return\n }\n}\n\n// Basic string manipulation\n\n/** Strip a given prefix from a function\n *\n * @param s - string\n * @param prefix - prefix to strip\n *\n * @returns either the string with the prefix stripped or undefined if the\n * string did not begin with the prefix.\n */\nexport function stripPrefix(s: string, prefix: string): string | undefined {\n if (s.startsWith(prefix)) {\n return s.slice(prefix.length)\n }\n return undefined\n}\n\n/** Find the length of the longest common prefix of two strings\n *\n * @param s1 - first string\n * @param s2 - second string\n *\n * @returns - the length of the longest common prefix of the two strings.\n */\nfunction commonPrefixLen(s1: string, s2: string): number {\n const max = Math.min(s1.length, s2.length)\n let result\n for (result = 0; result < max; ++result) {\n if (s1[result] !== s2[result]) {\n break\n }\n }\n return result\n}\n\n/** Find the longest common prefix of any number of strings\n *\n * @param strs - an iterable of strings\n *\n * @returns the longest common prefix of all the strings\n */\nexport function shortestCommonPrefix(strs: Iterable<string>): string {\n let result // Undefined if no iterations happened\n for (const s of strs) {\n if (result === undefined) {\n result = s\n } else {\n result = result.slice(0, commonPrefixLen(result, s))\n }\n }\n return result ?? \"\"\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Subject,\n catchError,\n combineLatest,\n filter,\n fromEvent,\n map,\n of,\n switchMap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { configuration } from \"~/_\"\nimport {\n getElement,\n getLocation,\n requestJSON,\n setLocation\n} from \"~/browser\"\nimport { getComponentElements } from \"~/components\"\nimport {\n Version,\n renderVersionSelector\n} from \"~/templates\"\n\nimport { fetchSitemap } from \"../sitemap\"\n\nimport { selectedVersionCorrespondingURL } from \"./findurl\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n document$: Subject<Document> /* Document subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up version selector\n *\n * @param options - Options\n */\nexport function setupVersionSelector(\n { document$ }: SetupOptions\n): void {\n const config = configuration()\n const versions$ = requestJSON<Version[]>(\n new URL(\"../versions.json\", config.base)\n )\n .pipe(\n catchError(() => EMPTY) // @todo refactor instant loading\n )\n\n /* Determine current version */\n const current$ = versions$\n .pipe(\n map(versions => {\n const [, current] = config.base.match(/([^/]+)\\/?$/)!\n return versions.find(({ version, aliases }) => (\n version === current || aliases.includes(current)\n )) || versions[0]\n })\n )\n\n /* Intercept inter-version navigation */\n versions$\n .pipe(\n map(versions => new Map(versions.map(version => [\n `${new URL(`../${version.version}/`, config.base)}`,\n version\n ]))),\n switchMap(urls => fromEvent<MouseEvent>(document.body, \"click\")\n .pipe(\n filter(ev => !ev.metaKey && !ev.ctrlKey),\n withLatestFrom(current$),\n switchMap(([ev, current]) => {\n if (ev.target instanceof Element) {\n const el = ev.target.closest(\"a\")\n if (el && !el.target && urls.has(el.href)) {\n const url = el.href\n // This is a temporary hack to detect if a version inside the\n // version selector or on another part of the site was clicked.\n // If we're inside the version selector, we definitely want to\n // find the same page, as we might have different deployments\n // due to aliases. However, if we're outside the version\n // selector, we must abort here, because we might otherwise\n // interfere with instant navigation. We need to refactor this\n // at some point together with instant navigation.\n //\n // See https://github.com/squidfunk/mkdocs-material/issues/4012\n if (!ev.target.closest(\".md-version\")) {\n const version = urls.get(url)!\n if (version === current)\n return EMPTY\n }\n ev.preventDefault()\n return of(new URL(url))\n }\n }\n return EMPTY\n }),\n switchMap(selectedVersionBaseURL => {\n return fetchSitemap(selectedVersionBaseURL).pipe(\n map(\n sitemap =>\n selectedVersionCorrespondingURL({\n selectedVersionSitemap: sitemap,\n selectedVersionBaseURL,\n currentLocation: getLocation(),\n currentBaseURL: config.base\n }) ?? selectedVersionBaseURL,\n ),\n )\n })\n )\n )\n )\n .subscribe(url => setLocation(url, true))\n\n /* Render version selector and warning */\n combineLatest([versions$, current$])\n .subscribe(([versions, current]) => {\n const topic = getElement(\".md-header__topic\")\n topic.appendChild(renderVersionSelector(versions, current))\n })\n\n /* Integrate outdated version banner with instant navigation */\n document$.pipe(switchMap(() => current$))\n .subscribe(current => {\n\n // Always scope outdate version banner to the base URL of the site\n const base = new URL(config.base)\n\n /* Check if version state was already determined */\n let outdated = __md_get(\"__outdated\", sessionStorage, base)\n if (outdated === null) {\n outdated = true\n\n /* Obtain and normalize default versions */\n let ignored = config.version?.default || \"latest\"\n if (!Array.isArray(ignored))\n ignored = [ignored]\n\n /* Check if version is considered a default */\n main: for (const ignore of ignored)\n for (const version of current.aliases.concat(current.version))\n if (new RegExp(ignore, \"i\").test(version)) {\n outdated = false\n break main\n }\n\n /* Persist version state in session storage */\n __md_set(\"__outdated\", outdated, sessionStorage, base)\n }\n\n /* Unhide outdated version banner */\n if (outdated)\n for (const warning of getComponentElements(\"outdated\"))\n warning.hidden = false\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n finalize,\n first,\n fromEvent,\n ignoreElements,\n map,\n merge,\n shareReplay,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport {\n getElement,\n getLocation,\n setToggle,\n watchElementFocus,\n watchToggle\n} from \"~/browser\"\nimport {\n SearchMessage,\n SearchMessageType,\n isSearchReadyMessage\n} from \"~/integrations\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search query\n */\nexport interface SearchQuery {\n value: string /* Query value */\n focus: boolean /* Query focus */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch search query\n *\n * Note that the focus event which triggers re-reading the current query value\n * is delayed by `1ms` so the input's empty state is allowed to propagate.\n *\n * @param el - Search query element\n * @param options - Options\n *\n * @returns Search query observable\n */\nexport function watchSearchQuery(\n el: HTMLInputElement, { worker$ }: WatchOptions\n): Observable<SearchQuery> {\n\n /* Support search deep linking */\n const { searchParams } = getLocation()\n if (searchParams.has(\"q\")) {\n setToggle(\"search\", true)\n\n /* Set query from parameter */\n el.value = searchParams.get(\"q\")!\n el.focus()\n\n /* Remove query parameter on close */\n watchToggle(\"search\")\n .pipe(\n first(active => !active)\n )\n .subscribe(() => {\n const url = getLocation()\n url.searchParams.delete(\"q\")\n history.replaceState({}, \"\", `${url}`)\n })\n }\n\n /* Intercept focus and input events */\n const focus$ = watchElementFocus(el)\n const value$ = merge(\n worker$.pipe(first(isSearchReadyMessage)),\n fromEvent(el, \"keyup\"),\n focus$\n )\n .pipe(\n map(() => el.value),\n distinctUntilChanged()\n )\n\n /* Combine into single observable */\n return combineLatest([value$, focus$])\n .pipe(\n map(([value, focus]) => ({ value, focus })),\n shareReplay(1)\n )\n}\n\n/**\n * Mount search query\n *\n * @param el - Search query element\n * @param options - Options\n *\n * @returns Search query component observable\n */\nexport function mountSearchQuery(\n el: HTMLInputElement, { worker$ }: MountOptions\n): Observable<Component<SearchQuery, HTMLInputElement>> {\n const push$ = new Subject<SearchQuery>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n\n /* Handle value change */\n combineLatest([\n worker$.pipe(first(isSearchReadyMessage)),\n push$\n ], (_, query) => query)\n .pipe(\n distinctUntilKeyChanged(\"value\")\n )\n .subscribe(({ value }) => worker$.next({\n type: SearchMessageType.QUERY,\n data: value\n }))\n\n /* Handle focus change */\n push$\n .pipe(\n distinctUntilKeyChanged(\"focus\")\n )\n .subscribe(({ focus }) => {\n if (focus)\n setToggle(\"search\", focus)\n })\n\n /* Handle reset */\n fromEvent(el.form!, \"reset\")\n .pipe(\n takeUntil(done$)\n )\n .subscribe(() => el.focus())\n\n // Focus search query on label click - note that this is necessary to bring\n // up the keyboard on iOS and other mobile platforms, as the search dialog is\n // not visible at first, and programatically focusing an input element must\n // be triggered by a user interaction - see https://t.ly/Cb30n\n const label = getElement(\"header [for=__search]\")\n fromEvent(label, \"click\")\n .subscribe(() => el.focus())\n\n /* Create and return component */\n return watchSearchQuery(el, { worker$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state })),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n bufferCount,\n filter,\n finalize,\n first,\n fromEvent,\n map,\n merge,\n mergeMap,\n of,\n share,\n skipUntil,\n switchMap,\n takeUntil,\n tap,\n withLatestFrom,\n zipWith\n} from \"rxjs\"\n\nimport { translation } from \"~/_\"\nimport {\n getElement,\n getOptionalElement,\n watchElementBoundary,\n watchToggle\n} from \"~/browser\"\nimport {\n SearchMessage,\n SearchResult,\n isSearchReadyMessage,\n isSearchResultMessage\n} from \"~/integrations\"\nimport { renderSearchResultItem } from \"~/templates\"\nimport { round } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\nimport { SearchQuery } from \"../query\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n query$: Observable<SearchQuery> /* Search query observable */\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search result list\n *\n * This function performs a lazy rendering of the search results, depending on\n * the vertical offset of the search result container.\n *\n * @param el - Search result list element\n * @param options - Options\n *\n * @returns Search result list component observable\n */\nexport function mountSearchResult(\n el: HTMLElement, { worker$, query$ }: MountOptions\n): Observable<Component<SearchResult>> {\n const push$ = new Subject<SearchResult>()\n const boundary$ = watchElementBoundary(el.parentElement!)\n .pipe(\n filter(Boolean)\n )\n\n /* Retrieve container */\n const container = el.parentElement!\n\n /* Retrieve nested components */\n const meta = getElement(\":scope > :first-child\", el)\n const list = getElement(\":scope > :last-child\", el)\n\n /* Reveal to accessibility tree \u2013 see https://bit.ly/3iAA7t8 */\n watchToggle(\"search\")\n .subscribe(active => list.setAttribute(\n \"role\", active ? \"list\" : \"presentation\"\n ))\n\n /* Update search result metadata */\n push$\n .pipe(\n withLatestFrom(query$),\n skipUntil(worker$.pipe(first(isSearchReadyMessage)))\n )\n .subscribe(([{ items }, { value }]) => {\n switch (items.length) {\n\n /* No results */\n case 0:\n meta.textContent = value.length\n ? translation(\"search.result.none\")\n : translation(\"search.result.placeholder\")\n break\n\n /* One result */\n case 1:\n meta.textContent = translation(\"search.result.one\")\n break\n\n /* Multiple result */\n default:\n const count = round(items.length)\n meta.textContent = translation(\"search.result.other\", count)\n }\n })\n\n /* Render search result item */\n const render$ = push$\n .pipe(\n tap(() => list.innerHTML = \"\"),\n switchMap(({ items }) => merge(\n of(...items.slice(0, 10)),\n of(...items.slice(10))\n .pipe(\n bufferCount(4),\n zipWith(boundary$),\n switchMap(([chunk]) => chunk)\n )\n )),\n map(renderSearchResultItem),\n share()\n )\n\n /* Update search result list */\n render$.subscribe(item => list.appendChild(item))\n render$\n .pipe(\n mergeMap(item => {\n const details = getOptionalElement(\"details\", item)\n if (typeof details === \"undefined\")\n return EMPTY\n\n /* Keep position of details element stable */\n return fromEvent(details, \"toggle\")\n .pipe(\n takeUntil(push$),\n map(() => details)\n )\n })\n )\n .subscribe(details => {\n if (\n details.open === false &&\n details.offsetTop <= container.scrollTop\n )\n container.scrollTo({ top: details.offsetTop })\n })\n\n /* Filter search result message */\n const result$ = worker$\n .pipe(\n filter(isSearchResultMessage),\n map(({ data }) => data)\n )\n\n /* Create and return component */\n return result$\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n endWith,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { getLocation } from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { SearchQuery } from \"../query\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search sharing\n */\nexport interface SearchShare {\n url: URL /* Deep link for sharing */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n query$: Observable<SearchQuery> /* Search query observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n query$: Observable<SearchQuery> /* Search query observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search sharing\n *\n * @param _el - Search sharing element\n * @param options - Options\n *\n * @returns Search sharing observable\n */\nexport function watchSearchShare(\n _el: HTMLElement, { query$ }: WatchOptions\n): Observable<SearchShare> {\n return query$\n .pipe(\n map(({ value }) => {\n const url = getLocation()\n url.hash = \"\"\n\n /* Compute readable query strings */\n value = value\n .replace(/\\s+/g, \"+\") /* Collapse whitespace */\n .replace(/&/g, \"%26\") /* Escape '&' character */\n .replace(/=/g, \"%3D\") /* Escape '=' character */\n\n /* Replace query string */\n url.search = `q=${value}`\n return { url }\n })\n )\n}\n\n/**\n * Mount search sharing\n *\n * @param el - Search sharing element\n * @param options - Options\n *\n * @returns Search sharing component observable\n */\nexport function mountSearchShare(\n el: HTMLAnchorElement, options: MountOptions\n): Observable<Component<SearchShare>> {\n const push$ = new Subject<SearchShare>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe(({ url }) => {\n el.setAttribute(\"data-clipboard-text\", el.href)\n el.href = `${url}`\n })\n\n /* Prevent following of link */\n fromEvent(el, \"click\")\n .pipe(\n takeUntil(done$)\n )\n .subscribe(ev => ev.preventDefault())\n\n /* Create and return component */\n return watchSearchShare(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n combineLatestWith,\n distinctUntilChanged,\n filter,\n finalize,\n fromEvent,\n map,\n merge,\n observeOn,\n tap\n} from \"rxjs\"\n\nimport { Keyboard } from \"~/browser\"\nimport {\n SearchMessage,\n SearchResult,\n isSearchResultMessage\n} from \"~/integrations\"\n\nimport { Component, getComponentElement } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search suggestions\n */\nexport interface SearchSuggest {}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n keyboard$: Observable<Keyboard> /* Keyboard observable */\n worker$: Subject<SearchMessage> /* Search worker */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search suggestions\n *\n * This function will perform a lazy rendering of the search results, depending\n * on the vertical offset of the search result container.\n *\n * @param el - Search result list element\n * @param options - Options\n *\n * @returns Search result list component observable\n */\nexport function mountSearchSuggest(\n el: HTMLElement, { worker$, keyboard$ }: MountOptions\n): Observable<Component<SearchSuggest>> {\n const push$ = new Subject<SearchResult>()\n\n /* Retrieve query component and track all changes */\n const query = getComponentElement(\"search-query\")\n const query$ = merge(\n fromEvent(query, \"keydown\"),\n fromEvent(query, \"focus\")\n )\n .pipe(\n observeOn(asyncScheduler),\n map(() => query.value),\n distinctUntilChanged(),\n )\n\n /* Update search suggestions */\n push$\n .pipe(\n combineLatestWith(query$),\n map(([{ suggest }, value]) => {\n const words = value.split(/([\\s-]+)/)\n if (suggest?.length && words[words.length - 1]) {\n const last = suggest[suggest.length - 1]\n if (last.startsWith(words[words.length - 1]))\n words[words.length - 1] = last\n } else {\n words.length = 0\n }\n return words\n })\n )\n .subscribe(words => el.innerHTML = words\n .join(\"\")\n .replace(/\\s/g, \" \")\n )\n\n /* Set up search keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"search\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Right arrow: accept current suggestion */\n case \"ArrowRight\":\n if (\n el.innerText.length &&\n query.selectionStart === query.value.length\n )\n query.value = el.innerText\n break\n }\n })\n\n /* Filter search result message */\n const result$ = worker$\n .pipe(\n filter(isSearchResultMessage),\n map(({ data }) => data)\n )\n\n /* Create and return component */\n return result$\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(() => ({ ref: el }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n ObservableInput,\n filter,\n fromEvent,\n merge,\n mergeWith\n} from \"rxjs\"\n\nimport { configuration } from \"~/_\"\nimport {\n Keyboard,\n getActiveElement,\n getElements,\n setToggle\n} from \"~/browser\"\nimport {\n SearchIndex,\n SearchResult,\n setupSearchWorker\n} from \"~/integrations\"\n\nimport {\n Component,\n getComponentElement,\n getComponentElements\n} from \"../../_\"\nimport {\n SearchQuery,\n mountSearchQuery\n} from \"../query\"\nimport { mountSearchResult } from \"../result\"\nimport {\n SearchShare,\n mountSearchShare\n} from \"../share\"\nimport {\n SearchSuggest,\n mountSearchSuggest\n} from \"../suggest\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search\n */\nexport type Search =\n | SearchQuery\n | SearchResult\n | SearchShare\n | SearchSuggest\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n index$: ObservableInput<SearchIndex> /* Search index observable */\n keyboard$: Observable<Keyboard> /* Keyboard observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search\n *\n * This function sets up the search functionality, including the underlying\n * web worker and all keyboard bindings.\n *\n * @param el - Search element\n * @param options - Options\n *\n * @returns Search component observable\n */\nexport function mountSearch(\n el: HTMLElement, { index$, keyboard$ }: MountOptions\n): Observable<Component<Search>> {\n const config = configuration()\n try {\n const worker$ = setupSearchWorker(config.search, index$)\n\n /* Retrieve query and result components */\n const query = getComponentElement(\"search-query\", el)\n const result = getComponentElement(\"search-result\", el)\n\n /* Always close search on result selection */\n fromEvent<PointerEvent>(el, \"click\")\n .pipe(\n filter(({ target }) => (\n target instanceof Element && !!target.closest(\"a\")\n ))\n )\n .subscribe(() => setToggle(\"search\", false))\n\n /* Set up search keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"search\")\n )\n .subscribe(key => {\n const active = getActiveElement()\n switch (key.type) {\n\n /* Enter: go to first (best) result */\n case \"Enter\":\n if (active === query) {\n const anchors = new Map<HTMLAnchorElement, number>()\n for (const anchor of getElements<HTMLAnchorElement>(\n \":first-child [href]\", result\n )) {\n const article = anchor.firstElementChild!\n anchors.set(anchor, parseFloat(\n article.getAttribute(\"data-md-score\")!\n ))\n }\n\n /* Go to result with highest score, if any */\n if (anchors.size) {\n const [[best]] = [...anchors].sort(([, a], [, b]) => b - a)\n best.click()\n }\n\n /* Otherwise omit form submission */\n key.claim()\n }\n break\n\n /* Escape or Tab: close search */\n case \"Escape\":\n case \"Tab\":\n setToggle(\"search\", false)\n query.blur()\n break\n\n /* Vertical arrows: select previous or next search result */\n case \"ArrowUp\":\n case \"ArrowDown\":\n if (typeof active === \"undefined\") {\n query.focus()\n } else {\n const els = [query, ...getElements(\n \":not(details) > [href], summary, details[open] [href]\",\n result\n )]\n const i = Math.max(0, (\n Math.max(0, els.indexOf(active)) + els.length + (\n key.type === \"ArrowUp\" ? -1 : +1\n )\n ) % els.length)\n els[i].focus()\n }\n\n /* Prevent scrolling of page */\n key.claim()\n break\n\n /* All other keys: hand to search query */\n default:\n if (query !== getActiveElement())\n query.focus()\n }\n })\n\n /* Set up global keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Open search and select query */\n case \"f\":\n case \"s\":\n case \"/\":\n query.focus()\n query.select()\n\n /* Prevent scrolling of page */\n key.claim()\n break\n }\n })\n\n /* Create and return component */\n const query$ = mountSearchQuery(query, { worker$ })\n return merge(\n query$,\n mountSearchResult(result, { worker$, query$ })\n )\n .pipe(\n mergeWith(\n\n /* Search sharing */\n ...getComponentElements(\"search-share\", el)\n .map(child => mountSearchShare(child, { query$ })),\n\n /* Search suggestions */\n ...getComponentElements(\"search-suggest\", el)\n .map(child => mountSearchSuggest(child, { worker$, keyboard$ }))\n )\n )\n\n /* Gracefully handle broken search */\n } catch (err) {\n el.hidden = true\n return NEVER\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n ObservableInput,\n combineLatest,\n filter,\n map,\n startWith\n} from \"rxjs\"\n\nimport { getLocation } from \"~/browser\"\nimport {\n SearchIndex,\n setupSearchHighlighter\n} from \"~/integrations\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search highlighting\n */\nexport interface SearchHighlight {\n nodes: Map<ChildNode, string> /* Map of replacements */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n index$: ObservableInput<SearchIndex> /* Search index observable */\n location$: Observable<URL> /* Location observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search highlighting\n *\n * @param el - Content element\n * @param options - Options\n *\n * @returns Search highlighting component observable\n */\nexport function mountSearchHiglight(\n el: HTMLElement, { index$, location$ }: MountOptions\n): Observable<Component<SearchHighlight>> {\n return combineLatest([\n index$,\n location$\n .pipe(\n startWith(getLocation()),\n filter(url => !!url.searchParams.get(\"h\"))\n )\n ])\n .pipe(\n map(([index, url]) => setupSearchHighlighter(index.config)(\n url.searchParams.get(\"h\")!\n )),\n map(fn => {\n const nodes = new Map<ChildNode, string>()\n\n /* Traverse text nodes and collect matches */\n const it = document.createNodeIterator(el, NodeFilter.SHOW_TEXT)\n for (let node = it.nextNode(); node; node = it.nextNode()) {\n if (node.parentElement?.offsetHeight) {\n const original = node.textContent!\n const replaced = fn(original)\n if (replaced.length > original.length)\n nodes.set(node as ChildNode, replaced)\n }\n }\n\n /* Replace original nodes with matches */\n for (const [node, text] of nodes) {\n const { childNodes } = h(\"span\", null, text)\n node.replaceWith(...Array.from(childNodes))\n }\n\n /* Return component */\n return { ref: el, nodes }\n })\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n asyncScheduler,\n auditTime,\n combineLatest,\n defer,\n distinctUntilChanged,\n endWith,\n finalize,\n first,\n from,\n fromEvent,\n ignoreElements,\n map,\n mergeMap,\n observeOn,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n Viewport,\n getElement,\n getElementOffset,\n getElementSize,\n getElements\n} from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Sidebar\n */\nexport interface Sidebar {\n height: number /* Sidebar height */\n locked: boolean /* Sidebar is locked */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n main$: Observable<Main> /* Main area observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch sidebar\n *\n * This function returns an observable that computes the visual parameters of\n * the sidebar which depends on the vertical viewport offset, as well as the\n * height of the main area. When the page is scrolled beyond the header, the\n * sidebar is locked and fills the remaining space.\n *\n * @param el - Sidebar element\n * @param options - Options\n *\n * @returns Sidebar observable\n */\nexport function watchSidebar(\n el: HTMLElement, { viewport$, main$ }: WatchOptions\n): Observable<Sidebar> {\n const parent = el.closest<HTMLElement>(\".md-grid\")!\n const adjust =\n parent.offsetTop -\n parent.parentElement!.offsetTop\n\n /* Compute the sidebar's available height and if it should be locked */\n return combineLatest([main$, viewport$])\n .pipe(\n map(([{ offset, height }, { offset: { y } }]) => {\n height = height\n + Math.min(adjust, Math.max(0, y - offset))\n - adjust\n return {\n height,\n locked: y >= offset + adjust\n }\n }),\n distinctUntilChanged((a, b) => (\n a.height === b.height &&\n a.locked === b.locked\n ))\n )\n}\n\n/**\n * Mount sidebar\n *\n * This function doesn't set the height of the actual sidebar, but of its first\n * child \u2013 the `.md-sidebar__scrollwrap` element in order to mitigiate jittery\n * sidebars when the footer is scrolled into view. At some point we switched\n * from `absolute` / `fixed` positioning to `sticky` positioning, significantly\n * reducing jitter in some browsers (respectively Firefox and Safari) when\n * scrolling from the top. However, top-aligned sticky positioning means that\n * the sidebar snaps to the bottom when the end of the container is reached.\n * This is what leads to the mentioned jitter, as the sidebar's height may be\n * updated too slowly.\n *\n * This behaviour can be mitigiated by setting the height of the sidebar to `0`\n * while preserving the padding, and the height on its first element.\n *\n * @param el - Sidebar element\n * @param options - Options\n *\n * @returns Sidebar component observable\n */\nexport function mountSidebar(\n el: HTMLElement, { header$, ...options }: MountOptions\n): Observable<Component<Sidebar>> {\n const inner = getElement(\".md-sidebar__scrollwrap\", el)\n const { y } = getElementOffset(inner)\n return defer(() => {\n const push$ = new Subject<Sidebar>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n const next$ = push$\n .pipe(\n auditTime(0, animationFrameScheduler)\n )\n\n /* Update sidebar height and offset */\n next$.pipe(withLatestFrom(header$))\n .subscribe({\n\n /* Handle emission */\n next([{ height }, { height: offset }]) {\n inner.style.height = `${height - 2 * y}px`\n el.style.top = `${offset}px`\n },\n\n /* Handle complete */\n complete() {\n inner.style.height = \"\"\n el.style.top = \"\"\n }\n })\n\n /* Bring active item into view on initial load */\n next$.pipe(first())\n .subscribe(() => {\n for (const item of getElements(\".md-nav__link--active[href]\", el)) {\n if (!item.clientHeight) // skip invisible toc in left sidebar\n continue\n const container = item.closest<HTMLElement>(\".md-sidebar__scrollwrap\")!\n if (typeof container !== \"undefined\") {\n const offset = item.offsetTop - container.offsetTop\n const { height } = getElementSize(container)\n container.scrollTo({\n top: offset - height / 2\n })\n }\n }\n })\n\n /* Handle accessibility for expandable items, see https://bit.ly/3jaod9p */\n from(getElements<HTMLLabelElement>(\"label[tabindex]\", el))\n .pipe(\n mergeMap(label => fromEvent(label, \"click\")\n .pipe(\n observeOn(asyncScheduler),\n map(() => label),\n takeUntil(done$)\n )\n )\n )\n .subscribe(label => {\n const input = getElement<HTMLInputElement>(`[id=\"${label.htmlFor}\"]`)\n const nav = getElement(`[aria-labelledby=\"${label.id}\"]`)\n nav.setAttribute(\"aria-expanded\", `${input.checked}`)\n })\n\n /* Create and return component */\n return watchSidebar(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Repo, User } from \"github-types\"\nimport {\n EMPTY,\n Observable,\n catchError,\n defaultIfEmpty,\n map,\n zip\n} from \"rxjs\"\n\nimport { requestJSON } from \"~/browser\"\n\nimport { SourceFacts } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * GitHub release (partial)\n */\ninterface Release {\n tag_name: string /* Tag name */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch GitHub repository facts\n *\n * @param user - GitHub user or organization\n * @param repo - GitHub repository\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFactsFromGitHub(\n user: string, repo?: string\n): Observable<SourceFacts> {\n if (typeof repo !== \"undefined\") {\n const url = `https://api.github.com/repos/${user}/${repo}`\n return zip(\n\n /* Fetch version */\n requestJSON<Release>(`${url}/releases/latest`)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(release => ({\n version: release.tag_name\n })),\n defaultIfEmpty({})\n ),\n\n /* Fetch stars and forks */\n requestJSON<Repo>(url)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(info => ({\n stars: info.stargazers_count,\n forks: info.forks_count\n })),\n defaultIfEmpty({})\n )\n )\n .pipe(\n map(([release, info]) => ({ ...release, ...info }))\n )\n\n /* User or organization */\n } else {\n const url = `https://api.github.com/users/${user}`\n return requestJSON<User>(url)\n .pipe(\n map(info => ({\n repositories: info.public_repos\n })),\n defaultIfEmpty({})\n )\n }\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ProjectSchema } from \"gitlab\"\nimport {\n EMPTY,\n Observable,\n catchError,\n defaultIfEmpty,\n map,\n zip\n} from \"rxjs\"\n\nimport { requestJSON } from \"~/browser\"\n\nimport { SourceFacts } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * GitLab release (partial)\n */\ninterface Release { // @todo remove and use the ReleaseSchema type instead after switching from gitlab to @gitbeaker/rest\n tag_name: string /* Tag name */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch GitLab repository facts\n *\n * @param base - GitLab base\n * @param project - GitLab project\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFactsFromGitLab(\n base: string, project: string\n): Observable<SourceFacts> {\n const url = `https://${base}/api/v4/projects/${encodeURIComponent(project)}`\n return zip(\n\n /* Fetch version */\n requestJSON<Release>(`${url}/releases/permalink/latest`)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(({ tag_name }) => ({\n version: tag_name\n })),\n defaultIfEmpty({})\n ),\n\n /* Fetch stars and forks */\n requestJSON<ProjectSchema>(url)\n .pipe(\n catchError(() => EMPTY), // @todo refactor instant loading\n map(({ star_count, forks_count }) => ({\n stars: star_count,\n forks: forks_count\n })),\n defaultIfEmpty({})\n )\n )\n .pipe(\n map(([release, info]) => ({ ...release, ...info }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { EMPTY, Observable } from \"rxjs\"\n\nimport { fetchSourceFactsFromGitHub } from \"../github\"\nimport { fetchSourceFactsFromGitLab } from \"../gitlab\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository facts for repositories\n */\nexport interface RepositoryFacts {\n stars?: number /* Number of stars */\n forks?: number /* Number of forks */\n version?: string /* Latest version */\n}\n\n/**\n * Repository facts for organizations\n */\nexport interface OrganizationFacts {\n repositories?: number /* Number of repositories */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Repository facts\n */\nexport type SourceFacts =\n | RepositoryFacts\n | OrganizationFacts\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch repository facts\n *\n * @param url - Repository URL\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFacts(\n url: string\n): Observable<SourceFacts> {\n\n /* Try to match GitHub repository */\n let match = url.match(/^.+github\\.com\\/([^/]+)\\/?([^/]+)?/i)\n if (match) {\n const [, user, repo] = match\n return fetchSourceFactsFromGitHub(user, repo)\n }\n\n /* Try to match GitLab repository */\n match = url.match(/^.+?([^/]*gitlab[^/]+)\\/(.+?)\\/?$/i)\n if (match) {\n const [, base, slug] = match\n return fetchSourceFactsFromGitLab(base, slug)\n }\n\n /* Fallback */\n return EMPTY\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n catchError,\n defer,\n filter,\n finalize,\n map,\n of,\n shareReplay,\n tap\n} from \"rxjs\"\n\nimport { getElement } from \"~/browser\"\nimport { ConsentDefaults } from \"~/components/consent\"\nimport { renderSourceFacts } from \"~/templates\"\n\nimport {\n Component,\n getComponentElements\n} from \"../../_\"\nimport {\n SourceFacts,\n fetchSourceFacts\n} from \"../facts\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository information\n */\nexport interface Source {\n facts: SourceFacts /* Repository facts */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository information observable\n */\nlet fetch$: Observable<Source>\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch repository information\n *\n * This function tries to read the repository facts from session storage, and\n * if unsuccessful, fetches them from the underlying provider.\n *\n * @param el - Repository information element\n *\n * @returns Repository information observable\n */\nexport function watchSource(\n el: HTMLAnchorElement\n): Observable<Source> {\n return fetch$ ||= defer(() => {\n const cached = __md_get<SourceFacts>(\"__source\", sessionStorage)\n if (cached) {\n return of(cached)\n } else {\n\n /* Check if consent is configured and was given */\n const els = getComponentElements(\"consent\")\n if (els.length) {\n const consent = __md_get<ConsentDefaults>(\"__consent\")\n if (!(consent && consent.github))\n return EMPTY\n }\n\n /* Fetch repository facts */\n return fetchSourceFacts(el.href)\n .pipe(\n tap(facts => __md_set(\"__source\", facts, sessionStorage))\n )\n }\n })\n .pipe(\n catchError(() => EMPTY),\n filter(facts => Object.keys(facts).length > 0),\n map(facts => ({ facts })),\n shareReplay(1)\n )\n}\n\n/**\n * Mount repository information\n *\n * @param el - Repository information element\n *\n * @returns Repository information component observable\n */\nexport function mountSource(\n el: HTMLAnchorElement\n): Observable<Component<Source>> {\n const inner = getElement(\":scope > :last-child\", el)\n return defer(() => {\n const push$ = new Subject<Source>()\n push$.subscribe(({ facts }) => {\n inner.appendChild(renderSourceFacts(facts))\n inner.classList.add(\"md-source__repository--active\")\n })\n\n /* Create and return component */\n return watchSource(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n distinctUntilKeyChanged,\n finalize,\n map,\n of,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n watchElementSize,\n watchViewportAt\n} from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Navigation tabs\n */\nexport interface Tabs {\n hidden: boolean /* Navigation tabs are hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch navigation tabs\n *\n * @param el - Navigation tabs element\n * @param options - Options\n *\n * @returns Navigation tabs observable\n */\nexport function watchTabs(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<Tabs> {\n return watchElementSize(document.body)\n .pipe(\n switchMap(() => watchViewportAt(el, { header$, viewport$ })),\n map(({ offset: { y } }) => {\n return {\n hidden: y >= 10\n }\n }),\n distinctUntilKeyChanged(\"hidden\")\n )\n}\n\n/**\n * Mount navigation tabs\n *\n * This function hides the navigation tabs when scrolling past the threshold\n * and makes them reappear in a nice CSS animation when scrolling back up.\n *\n * @param el - Navigation tabs element\n * @param options - Options\n *\n * @returns Navigation tabs component observable\n */\nexport function mountTabs(\n el: HTMLElement, options: MountOptions\n): Observable<Component<Tabs>> {\n return defer(() => {\n const push$ = new Subject<Tabs>()\n push$.subscribe({\n\n /* Handle emission */\n next({ hidden }) {\n el.hidden = hidden\n },\n\n /* Handle complete */\n complete() {\n el.hidden = false\n }\n })\n\n /* Create and return component */\n return (\n feature(\"navigation.tabs.sticky\")\n ? of({ hidden: false })\n : watchTabs(el, options)\n )\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n bufferCount,\n combineLatestWith,\n debounceTime,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n filter,\n finalize,\n ignoreElements,\n map,\n merge,\n observeOn,\n of,\n repeat,\n scan,\n share,\n skip,\n startWith,\n switchMap,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElement,\n getElementContainer,\n getElementSize,\n getElements,\n getLocation,\n getOptionalElement,\n watchElementSize\n} from \"~/browser\"\n\nimport {\n Component,\n getComponentElement\n} from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Table of contents\n */\nexport interface TableOfContents {\n prev: HTMLAnchorElement[][] /* Anchors (previous) */\n next: HTMLAnchorElement[][] /* Anchors (next) */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch table of contents\n *\n * This is effectively a scroll spy implementation which will account for the\n * fixed header and automatically re-calculate anchor offsets when the viewport\n * is resized. The returned observable will only emit if the table of contents\n * needs to be repainted.\n *\n * This implementation tracks an anchor element's entire path starting from its\n * level up to the top-most anchor element, e.g. `[h3, h2, h1]`. Although the\n * Material theme currently doesn't make use of this information, it enables\n * the styling of the entire hierarchy through customization.\n *\n * Note that the current anchor is the last item of the `prev` anchor list.\n *\n * @param el - Table of contents element\n * @param options - Options\n *\n * @returns Table of contents observable\n */\nexport function watchTableOfContents(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable<TableOfContents> {\n const table = new Map<HTMLAnchorElement, HTMLElement>()\n\n /* Compute anchor-to-target mapping */\n const anchors = getElements<HTMLAnchorElement>(\".md-nav__link\", el)\n for (const anchor of anchors) {\n const id = decodeURIComponent(anchor.hash.substring(1))\n const target = getOptionalElement(`[id=\"${id}\"]`)\n if (typeof target !== \"undefined\")\n table.set(anchor, target)\n }\n\n /* Compute necessary adjustment for header */\n const adjust$ = header$\n .pipe(\n distinctUntilKeyChanged(\"height\"),\n map(({ height }) => {\n const main = getComponentElement(\"main\")\n const grid = getElement(\":scope > :first-child\", main)\n return height + 0.8 * (\n grid.offsetTop -\n main.offsetTop\n )\n }),\n share()\n )\n\n /* Compute partition of previous and next anchors */\n const partition$ = watchElementSize(document.body)\n .pipe(\n distinctUntilKeyChanged(\"height\"),\n\n /* Build index to map anchor paths to vertical offsets */\n switchMap(body => defer(() => {\n let path: HTMLAnchorElement[] = []\n return of([...table].reduce((index, [anchor, target]) => {\n while (path.length) {\n const last = table.get(path[path.length - 1])!\n if (last.tagName >= target.tagName) {\n path.pop()\n } else {\n break\n }\n }\n\n /* If the current anchor is hidden, continue with its parent */\n let offset = target.offsetTop\n while (!offset && target.parentElement) {\n target = target.parentElement\n offset = target.offsetTop\n }\n\n /* Fix anchor offsets in tables - see https://bit.ly/3CUFOcn */\n let parent = target.offsetParent as HTMLElement\n for (; parent; parent = parent.offsetParent as HTMLElement)\n offset += parent.offsetTop\n\n /* Map reversed anchor path to vertical offset */\n return index.set(\n [...path = [...path, anchor]].reverse(),\n offset\n )\n }, new Map<HTMLAnchorElement[], number>()))\n })\n .pipe(\n\n /* Sort index by vertical offset (see https://bit.ly/30z6QSO) */\n map(index => new Map([...index].sort(([, a], [, b]) => a - b))),\n combineLatestWith(adjust$),\n\n /* Re-compute partition when viewport offset changes */\n switchMap(([index, adjust]) => viewport$\n .pipe(\n scan(([prev, next], { offset: { y }, size }) => {\n const last = y + size.height >= Math.floor(body.height)\n\n /* Look forward */\n while (next.length) {\n const [, offset] = next[0]\n if (offset - adjust < y || last) {\n prev = [...prev, next.shift()!]\n } else {\n break\n }\n }\n\n /* Look backward */\n while (prev.length) {\n const [, offset] = prev[prev.length - 1]\n if (offset - adjust >= y && !last) {\n next = [prev.pop()!, ...next]\n } else {\n break\n }\n }\n\n /* Return partition */\n return [prev, next]\n }, [[], [...index]]),\n distinctUntilChanged((a, b) => (\n a[0] === b[0] &&\n a[1] === b[1]\n ))\n )\n )\n )\n )\n )\n\n /* Compute and return anchor list migrations */\n return partition$\n .pipe(\n map(([prev, next]) => ({\n prev: prev.map(([path]) => path),\n next: next.map(([path]) => path)\n })),\n\n /* Extract anchor list migrations */\n startWith({ prev: [], next: [] }),\n bufferCount(2, 1),\n map(([a, b]) => {\n\n /* Moving down */\n if (a.prev.length < b.prev.length) {\n return {\n prev: b.prev.slice(Math.max(0, a.prev.length - 1), b.prev.length),\n next: []\n }\n\n /* Moving up */\n } else {\n return {\n prev: b.prev.slice(-1),\n next: b.next.slice(0, b.next.length - a.next.length)\n }\n }\n })\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount table of contents\n *\n * @param el - Table of contents element\n * @param options - Options\n *\n * @returns Table of contents component observable\n */\nexport function mountTableOfContents(\n el: HTMLElement, { viewport$, header$, main$, target$ }: MountOptions\n): Observable<Component<TableOfContents>> {\n return defer(() => {\n const push$ = new Subject<TableOfContents>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe(({ prev, next }) => {\n\n /* Look forward */\n for (const [anchor] of next) {\n anchor.classList.remove(\"md-nav__link--passed\")\n anchor.classList.remove(\"md-nav__link--active\")\n }\n\n /* Look backward */\n for (const [index, [anchor]] of prev.entries()) {\n anchor.classList.add(\"md-nav__link--passed\")\n anchor.classList.toggle(\n \"md-nav__link--active\",\n index === prev.length - 1\n )\n }\n })\n\n /* Set up following, if enabled */\n if (feature(\"toc.follow\")) {\n\n /* Toggle smooth scrolling only for anchor clicks */\n const smooth$ = merge(\n viewport$.pipe(debounceTime(1), map(() => undefined)),\n viewport$.pipe(debounceTime(250), map(() => \"smooth\" as const))\n )\n\n /* Bring active anchor into view */ // @todo: refactor\n push$\n .pipe(\n filter(({ prev }) => prev.length > 0),\n combineLatestWith(main$.pipe(observeOn(asyncScheduler))),\n withLatestFrom(smooth$)\n )\n .subscribe(([[{ prev }], behavior]) => {\n const [anchor] = prev[prev.length - 1]\n if (anchor.offsetHeight) {\n\n /* Retrieve overflowing container and scroll */\n const container = getElementContainer(anchor)\n if (typeof container !== \"undefined\") {\n const offset = anchor.offsetTop - container.offsetTop\n const { height } = getElementSize(container)\n container.scrollTo({\n top: offset - height / 2,\n behavior\n })\n }\n }\n })\n }\n\n /* Set up anchor tracking, if enabled */\n if (feature(\"navigation.tracking\"))\n viewport$\n .pipe(\n takeUntil(done$),\n distinctUntilKeyChanged(\"offset\"),\n debounceTime(250),\n skip(1),\n takeUntil(target$.pipe(skip(1))),\n repeat({ delay: 250 }),\n withLatestFrom(push$)\n )\n .subscribe(([, { prev }]) => {\n const url = getLocation()\n\n /* Set hash fragment to active anchor */\n const anchor = prev[prev.length - 1]\n if (anchor && anchor.length) {\n const [active] = anchor\n const { hash } = new URL(active.href)\n if (url.hash !== hash) {\n url.hash = hash\n history.replaceState({}, \"\", `${url}`)\n }\n\n /* Reset anchor when at the top */\n } else {\n url.hash = \"\"\n history.replaceState({}, \"\", `${url}`)\n }\n })\n\n /* Create and return component */\n return watchTableOfContents(el, { viewport$, header$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n finalize,\n fromEvent,\n ignoreElements,\n map,\n repeat,\n skip,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { Viewport } from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Back-to-top button\n */\nexport interface BackToTop {\n hidden: boolean /* Back-to-top button is hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n main$: Observable<Main> /* Main area observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n header$: Observable<Header> /* Header observable */\n main$: Observable<Main> /* Main area observable */\n target$: Observable<HTMLElement> /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch back-to-top\n *\n * @param _el - Back-to-top element\n * @param options - Options\n *\n * @returns Back-to-top observable\n */\nexport function watchBackToTop(\n _el: HTMLElement, { viewport$, main$, target$ }: WatchOptions\n): Observable<BackToTop> {\n\n /* Compute direction */\n const direction$ = viewport$\n .pipe(\n map(({ offset: { y } }) => y),\n bufferCount(2, 1),\n map(([a, b]) => a > b && b > 0),\n distinctUntilChanged()\n )\n\n /* Compute whether main area is active */\n const active$ = main$\n .pipe(\n map(({ active }) => active)\n )\n\n /* Compute threshold for hiding */\n return combineLatest([active$, direction$])\n .pipe(\n map(([active, direction]) => !(active && direction)),\n distinctUntilChanged(),\n takeUntil(target$.pipe(skip(1))),\n endWith(true),\n repeat({ delay: 250 }),\n map(hidden => ({ hidden }))\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount back-to-top\n *\n * @param el - Back-to-top element\n * @param options - Options\n *\n * @returns Back-to-top component observable\n */\nexport function mountBackToTop(\n el: HTMLElement, { viewport$, header$, main$, target$ }: MountOptions\n): Observable<Component<BackToTop>> {\n const push$ = new Subject<BackToTop>()\n const done$ = push$.pipe(ignoreElements(), endWith(true))\n push$.subscribe({\n\n /* Handle emission */\n next({ hidden }) {\n el.hidden = hidden\n if (hidden) {\n el.setAttribute(\"tabindex\", \"-1\")\n el.blur()\n } else {\n el.removeAttribute(\"tabindex\")\n }\n },\n\n /* Handle complete */\n complete() {\n el.style.top = \"\"\n el.hidden = true\n el.removeAttribute(\"tabindex\")\n }\n })\n\n /* Watch header height */\n header$\n .pipe(\n takeUntil(done$),\n distinctUntilKeyChanged(\"height\")\n )\n .subscribe(({ height }) => {\n el.style.top = `${height + 16}px`\n })\n\n /* Go back to top */\n fromEvent(el, \"click\")\n .subscribe(ev => {\n ev.preventDefault()\n window.scrollTo({ top: 0 })\n })\n\n /* Create and return component */\n return watchBackToTop(el, { viewport$, main$, target$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n filter,\n finalize,\n map,\n mergeMap,\n skip,\n switchMap,\n take,\n takeUntil\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElements,\n watchElementVisibility\n} from \"~/browser\"\nimport { mountInlineTooltip2 } from \"~/components/tooltip2\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable<Document> /* Document observable */\n viewport$: Observable<Viewport> /* Viewport observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch ellipsis\n *\n * This function will fetch all elements that are shortened with ellipsis, and\n * filter those which are visible. Once they become visible, they stay in that\n * state, even though they may be hidden again. This optimization is necessary\n * to reduce pressure on the browser, with elements fading in and out of view.\n *\n * @param options - Options\n */\nexport function patchEllipsis(\n { document$, viewport$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements(\".md-ellipsis\")),\n mergeMap(el => watchElementVisibility(el)\n .pipe(\n takeUntil(document$.pipe(skip(1))),\n filter(visible => visible),\n map(() => el),\n take(1)\n )\n ),\n filter(el => el.offsetWidth < el.scrollWidth),\n mergeMap(el => {\n const text = el.innerText\n const host = el.closest(\"a\") || el\n host.title = text\n\n // Do not mount improved tooltip if feature is disabled\n if (!feature(\"content.tooltips\"))\n return EMPTY\n\n /* Mount tooltip */\n return mountInlineTooltip2(host, { viewport$ })\n .pipe(\n takeUntil(document$.pipe(skip(1))),\n finalize(() => host.removeAttribute(\"title\"))\n )\n })\n )\n .subscribe()\n\n // @todo move this outside of here and fix memleaks\n if (feature(\"content.tooltips\"))\n document$\n .pipe(\n switchMap(() => getElements(\".md-status\")),\n mergeMap(el => mountInlineTooltip2(el, { viewport$ }))\n )\n .subscribe()\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n mergeMap,\n switchMap,\n takeWhile,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable<Document> /* Document observable */\n tablet$: Observable<boolean> /* Media tablet observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch indeterminate checkboxes\n *\n * This function replaces the indeterminate \"pseudo state\" with the actual\n * indeterminate state, which is used to keep navigation always expanded.\n *\n * @param options - Options\n */\nexport function patchIndeterminate(\n { document$, tablet$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements<HTMLInputElement>(\n \".md-toggle--indeterminate\"\n )),\n tap(el => {\n el.indeterminate = true\n el.checked = false\n }),\n mergeMap(el => fromEvent(el, \"change\")\n .pipe(\n takeWhile(() => el.classList.contains(\"md-toggle--indeterminate\")),\n map(() => el)\n )\n ),\n withLatestFrom(tablet$)\n )\n .subscribe(([el, tablet]) => {\n el.classList.remove(\"md-toggle--indeterminate\")\n if (tablet)\n el.checked = false\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n filter,\n fromEvent,\n map,\n mergeMap,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable<Document> /* Document observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Check whether the given device is an Apple device\n *\n * @returns Test result\n */\nfunction isAppleDevice(): boolean {\n return /(iPad|iPhone|iPod)/.test(navigator.userAgent)\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch all elements with `data-md-scrollfix` attributes\n *\n * This is a year-old patch which ensures that overflow scrolling works at the\n * top and bottom of containers on iOS by ensuring a `1px` scroll offset upon\n * the start of a touch event.\n *\n * @see https://bit.ly/2SCtAOO - Original source\n *\n * @param options - Options\n */\nexport function patchScrollfix(\n { document$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements(\"[data-md-scrollfix]\")),\n tap(el => el.removeAttribute(\"data-md-scrollfix\")),\n filter(isAppleDevice),\n mergeMap(el => fromEvent(el, \"touchstart\")\n .pipe(\n map(() => el)\n )\n )\n )\n .subscribe(el => {\n const top = el.scrollTop\n\n /* We're at the top of the container */\n if (top === 0) {\n el.scrollTop = 1\n\n /* We're at the bottom of the container */\n } else if (top + el.offsetHeight === el.scrollHeight) {\n el.scrollTop = top - 1\n }\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n delay,\n map,\n of,\n switchMap,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n Viewport,\n watchToggle\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n viewport$: Observable<Viewport> /* Viewport observable */\n tablet$: Observable<boolean> /* Media tablet observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch the document body to lock when search is open\n *\n * For mobile and tablet viewports, the search is rendered full screen, which\n * leads to scroll leaking when at the top or bottom of the search result. This\n * function locks the body when the search is in full screen mode, and restores\n * the scroll position when leaving.\n *\n * @param options - Options\n */\nexport function patchScrolllock(\n { viewport$, tablet$ }: PatchOptions\n): void {\n combineLatest([watchToggle(\"search\"), tablet$])\n .pipe(\n map(([active, tablet]) => active && !tablet),\n switchMap(active => of(active)\n .pipe(\n delay(active ? 400 : 100)\n )\n ),\n withLatestFrom(viewport$)\n )\n .subscribe(([active, { offset: { y }}]) => {\n if (active) {\n document.body.setAttribute(\"data-md-scrolllock\", \"\")\n document.body.style.top = `-${y}px`\n } else {\n const value = -1 * parseInt(document.body.style.top, 10)\n document.body.removeAttribute(\"data-md-scrolllock\")\n document.body.style.top = \"\"\n if (value)\n window.scrollTo(0, value)\n }\n })\n}\n", "/*\n * Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Polyfills\n * ------------------------------------------------------------------------- */\n\n/* Polyfill `Object.entries` */\nif (!Object.entries)\n Object.entries = function (obj: object) {\n const data: [string, string][] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n data.push([key, obj[key]])\n\n /* Return entries */\n return data\n }\n\n/* Polyfill `Object.values` */\nif (!Object.values)\n Object.values = function (obj: object) {\n const data: string[] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n data.push(obj[key])\n\n /* Return values */\n return data\n }\n\n/* ------------------------------------------------------------------------- */\n\n/* Polyfills for `Element` */\nif (typeof Element !== \"undefined\") {\n\n /* Polyfill `Element.scrollTo` */\n if (!Element.prototype.scrollTo)\n Element.prototype.scrollTo = function (\n x?: ScrollToOptions | number, y?: number\n ): void {\n if (typeof x === \"object\") {\n this.scrollLeft = x.left!\n this.scrollTop = x.top!\n } else {\n this.scrollLeft = x!\n this.scrollTop = y!\n }\n }\n\n /* Polyfill `Element.replaceWith` */\n if (!Element.prototype.replaceWith)\n Element.prototype.replaceWith = function (\n ...nodes: Array<string | Node>\n ): void {\n const parent = this.parentNode\n if (parent) {\n if (nodes.length === 0)\n parent.removeChild(this)\n\n /* Replace children and create text nodes */\n for (let i = nodes.length - 1; i >= 0; i--) {\n let node = nodes[i]\n if (typeof node === \"string\")\n node = document.createTextNode(node)\n else if (node.parentNode)\n node.parentNode.removeChild(node)\n\n /* Replace child or insert before previous sibling */\n if (!i)\n parent.replaceChild(node, this)\n else\n parent.insertBefore(this.previousSibling!, node)\n }\n }\n }\n}\n"],
+ "mappings": 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diff --git a/public/develop/assets/stylesheets/main.8608ea7d.min.css b/public/develop/assets/stylesheets/main.8608ea7d.min.css
new file mode 100644
index 0000000000000000000000000000000000000000..407e7f0bcbd4123891c7d47f1745eca25bb0b5f5
--- /dev/null
+++ b/public/develop/assets/stylesheets/main.8608ea7d.min.css
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+ </div>
+ <div class="md-source__repository">
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+
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+
+
+ <span class="md-ellipsis">
+ 0. Home
+
+ </span>
+
+
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+ </li>
+
+
+
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+
+
+
+
+ <li class="md-nav__item">
+ <a href="../../deployment_guide/" class="md-nav__link">
+
+
+ <span class="md-ellipsis">
+ 1. Deployment Guide
+
+ </span>
+
+
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+ </li>
+
+
+
+
+
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+
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+
+ <li class="md-nav__item">
+ <a href="../../development_guide/" class="md-nav__link">
+
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+ <span class="md-ellipsis">
+ 2. Development Guide
+
+ </span>
+
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+
+
+
+
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+
+
+
+ <li class="md-nav__item">
+ <a href="../../run_experiments/" class="md-nav__link">
+
+
+ <span class="md-ellipsis">
+ 3. Run Experiments
+
+ </span>
+
+
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+ </li>
+
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+
+
+
+
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+ <li class="md-nav__item">
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+
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+
+ <li class="md-nav__item">
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+
+
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+ 5. Supported SBIs and Network Elements
+
+ </span>
+
+
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+
+
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+
+
+
+
+
+ <li class="md-nav__item">
+ <a href="../../supported_nbis/" class="md-nav__link">
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+ <span class="md-ellipsis">
+ 6. Supported NBIs
+
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+
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+
+
+
+
+
+
+
+
+
+ <li class="md-nav__item">
+ <a href="../../supported_service_handlers/" class="md-nav__link">
+
+
+ <span class="md-ellipsis">
+ 7. Supported Service Handlers
+
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+
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+
+
+
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+
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+ <li class="md-nav__item">
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+
+ </ul>
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+ </div>
+ </div>
+
+
+
+
+ <div class="md-content" data-md-component="content">
+ <article class="md-content__inner md-typeset">
+
+
+
+
+
+<h1 id="documenting">Documenting</h1>
+<p>TeraFlowSDN's documentation runs on <a href="https://www.mkdocs.org/">MkDocs</a>.</p>
+<h2 id="eligibility">Eligibility</h2>
+<p>Documenting TeraFlowSDN is limited to active contributors. So, if you:</p>
+<ol>
+<li>are an active member or participant;</li>
+<li>wish to contribute to it;</li>
+<li>you're ready!</li>
+</ol>
+<h2 id="system-and-structure">System and Structure</h2>
+<p><a href="https://www.mkdocs.org/">MkDocs</a> is a fast and simple static site generator that's geared towards building project documentation. Documentation source files are written in <code>Markdown</code>, and configured with a single <code>YAML</code> configuration file. Start by reading the <a href="https://www.mkdocs.org/getting-started/">introductory tutorial</a>, then check the <a href="https://www.mkdocs.org/user-guide/">User Guide</a> for more information.</p>
+<h3 id="how-does-it-work">How does it work?</h3>
+<p>There are 2 ways to upgrade documentation published on the <a href="https://tfs.etsi.org/documentation/" title="TFS Documentation">TFS Documentation</a> website:</p>
+<ul>
+<li>Push any change on <strong>develop</strong> branch will force update of the <strong>develop</strong> version on the <a href="https://tfs.etsi.org/documentation/" title="TFS Documentation">TFS Documentation</a> website;</li>
+<li>Create a tag, this will create a version with the tag name on the <a href="https://tfs.etsi.org/documentation/" title="TFS Documentation">TFS Documentation</a> website.</li>
+</ul>
+<h3 id="branches">Branches</h3>
+<p>This documentation repository has 2 protected branches:</p>
+<ul>
+<li><strong>main</strong>: stable timeline on which tags are made;</li>
+<li><strong>develop</strong>: edge timeline, also published on the <a href="https://tfs.etsi.org/documentation/" title="TFS Documentation">TFS Documentation</a> website.</li>
+</ul>
+<h3 id="structure">Structure</h3>
+<p>In the <code>mkdocs.yml</code> file you will find the navigation structure of the documentation, there you can sections with sub-sections.</p>
+<p><em>For example:</em></p>
+<pre><code class="language-yaml">nav:
+ - 0. Home : ./index.md
+ - 1. Deployment Guide: ./deployment_guide.md
+ - 2. Development Guide: ./development_guide.md
+ - 3. Run Experiments: ./run_experiments.md
+ - 4. Feature and bugs: ./features_and_bugs.md
+ - 5. Supported SBIs and Network Elements: ./supported_sbis_and_network_elements.md
+ - 6. Supported NBIs: ./supported_nbis.md
+ - 7. Supported Service Handlers: ./supported_service_handlers.md
+ - 8. Troubleshooting: ./troubleshooting.md
+ - 9. FAQ: ./faq.md
+</code></pre>
+<p>Please take a moment to understand the current structure of the documentations and think to update after contributing if necessary.</p>
+<h3 id="main-page">Main Page</h3>
+<p>The page shown first is at <strong>doc/index.md</strong>. That page should be updated with the latest changes of TeraFlowSDN and should reference the version (useful shortcut is <code>{{{ documentation_version }}}</code>).</p>
+<h2 id="getting-started">Getting Started</h2>
+<p>To contribute to TeraFlowSDN's documentation, you need to follow these easy steps:</p>
+<p>1) Clone the <a href="https://labs.etsi.org/rep/tfs/documentation">Documentation repository</a> with:</p>
+<pre><code class="language-bash">git clone https://labs.etsi.org/rep/tfs/documentation.git
+</code></pre>
+<p>2) Checkout the develop branch (incoming contributions are only accepted to the <strong>develop</strong> branch):</p>
+<pre><code class="language-bash">cd ./documentation
+git checkout develop
+</code></pre>
+<p>3) Setup a virtual environment:</p>
+<ul>
+<li>On Linux/macOS:</li>
+</ul>
+<pre><code class="language-bash">python3 -m venv venv # Linux/macOS
+source venv/bin/activate #Linux/macOS
+</code></pre>
+<ul>
+<li>On Windows:</li>
+</ul>
+<pre><code class="language-bash">python -m venv venv # Windows
+venv\Scripts\activate # Windows
+</code></pre>
+<p>4) Setup a local <code>mkdocs</code> server by installing requirements:</p>
+<pre><code class="language-bash">python -m pip install -r requirements.txt
+</code></pre>
+<p>4) Wait for all downloads to finish and start the local <code>mkdocs</code> server:</p>
+<pre><code class="language-bash">mkdocs serve
+</code></pre>
+<p>5) Document! 😊</p>
+<blockquote>
+<p>You should always make sure that the local <em>MkDocs</em> server terminal is not producing any <code>INFO</code>/<code>WARNING</code> messages regarding your contributions.</p>
+</blockquote>
+<h3 id="add-documentation-during-development">Add Documentation During Development</h3>
+<p>To update the documentation properly during development, follow those additional steps:</p>
+<ol>
+<li>Create an issue on the documentation <a href="https://labs.etsi.org/rep/tfs/documentation/-/issues">GitLab</a> repository;</li>
+<li>Create a new branch with the <strong>develop</strong> branch as a source;</li>
+<li>Update the documentation and any relevant parts (ie: the <code>index.md</code> with new functionalities for the latest version);</li>
+<li>Check if errors are not being produced by <code>mkdocs</code> <a href="#getting-started">locally</a>;</li>
+<li>Commit and push changes to the new branch;</li>
+<li>Create a MR request towards <strong>develop</strong>;</li>
+<li>Send the request for review and approval to at least one <strong>TSC Member</strong>.</li>
+</ol>
+<blockquote>
+<p>The documentation website supports branches, so your accepted changes will be reflected to the <strong>develop</strong> branch which then becomes the <strong>release</strong> branch after each corresponding cycle.</p>
+</blockquote>
+<h3 id="release-a-new-version-of-the-documentation">Release a New Version of the Documentation</h3>
+<p>When <strong>TeraFlowSDN</strong> code repository is ready for a new release, we need to follow these steps (made by a <strong>TSC Member</strong>):</p>
+<ol>
+<li>Create a MR from <strong>develop</strong> towards <strong>main</strong>;</li>
+<li>When <strong>develop</strong> is merged to <strong>main</strong>... then <strong>create a tag with the released version</strong> scheme... and you're done!</li>
+</ol>
+
+
+
+
+
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+
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+
+
+
+
+ </article>
+ </div>
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+ </a>
+
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+ <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><!--! Font Awesome Free 6.7.2 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2024 Fonticons, Inc.--><path d="m503.5 204.6-.7-1.8-69.7-181.78c-1.4-3.57-3.9-6.59-7.2-8.64-2.4-1.55-5.1-2.515-8-2.81s-5.7.083-8.4 1.11c-2.7 1.02-5.1 2.66-7.1 4.78-1.9 2.12-3.3 4.67-4.1 7.44l-47 144H160.8l-47.1-144c-.8-2.77-2.2-5.31-4.1-7.43-2-2.12-4.4-3.75-7.1-4.77a18.1 18.1 0 0 0-8.38-1.113 18.4 18.4 0 0 0-8.04 2.793 18.1 18.1 0 0 0-7.16 8.64L9.267 202.8l-.724 1.8a129.57 129.57 0 0 0-3.52 82c7.747 26.9 24.047 50.7 46.447 67.6l.27.2.59.4 105.97 79.5 52.6 39.7 32 24.2c3.7 1.9 8.3 4.3 13 4.3s9.3-2.4 13-4.3l32-24.2 52.6-39.7 106.7-79.9.3-.3c22.4-16.9 38.7-40.6 45.6-67.5 8.6-27 7.4-55.8-2.6-82"/></svg>
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diff --git a/public/develop/deployment_guide/index.html b/public/develop/deployment_guide/index.html
index 4d3c50db2d89be7c2b380e0a089a100ef2712f9d..c870543e3b0cad2dc20a47fea104bc8e43e71fab 100644
--- a/public/develop/deployment_guide/index.html
+++ b/public/develop/deployment_guide/index.html
@@ -22,7 +22,7 @@
<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -267,6 +268,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -278,6 +280,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -412,6 +415,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -432,6 +436,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -452,6 +457,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -472,6 +478,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -492,6 +499,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -512,6 +520,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -532,6 +541,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -552,6 +562,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -575,13 +586,14 @@
+
<h1>1. Deployment Guide</h1>
<p>This section walks you through the process of deploying TeraFlowSDN on top of a machine running <a href="https://microk8s.io">MicroK8s Kubernetes platform</a>.
The guide includes the details on configuring and installing the machine, installing and
configuring MicroK8s, and deploying and reporting the status of the TeraFlowSDN
controller.</p>
-<h2 id="11-configure-your-machine"><strong>1.1. Configure your Machine</strong></h2>
+<h2 id="11-configure-your-machine">1.1. Configure your Machine</h2>
<p>In this section, we describe how to configure a machine (physical or virtual) to be used as the deployment, execution, and development environment for the ETSI TeraFlowSDN controller. Choose your preferred environment below and follow the instructions provided.</p>
<p><strong>NOTE</strong>: If you already have a remote physical server fitting the requirements specified in this section feel free to use it instead of deploying a local VM. Check <a href="#111-physical-server">1.1.1. Physical Server</a> for further details.</p>
<p>Virtualization platforms tested are:</p>
@@ -592,7 +604,7 @@ controller.</p>
<li><a href="#114-openstack">OpenStack</a></li>
<li><a href="#115-vagrant-box">Vagrant Box</a></li>
</ul>
-<h3 id="111-physical-server"><strong>1.1.1. Physical Server</strong></h3>
+<h3 id="111-physical-server">1.1.1. Physical Server</h3>
<p>This section describes how to configure a physical server for running ETSI TeraFlowSDN(TFS) controller.</p>
<h3><u>Server Specifications</u></h3>
@@ -621,8 +633,10 @@ controller.</p>
<p>For development purposes, it is recommended to run the VSCode IDE (or the IDE of your choice) in a more powerful server, for instance, the recommended server specifications for development and basic deployment.</p>
<p>Given that TeraFlowSDN follows a micro-services architecture, for the deployment, it might be better to use many clusterized servers with many slower cores than a single server with few highly performant cores.</p>
<h3><u>Clusterized Deployment</u></h3>
+
<p>You might consider creating a cluster of machines each featuring, at least, the minimum server specifications. That solution brings you scalability in the future.</p>
<h3><u>Networking</u></h3>
+
<p>No explicit indications are given in terms of networking besides that servers need access to the Internet for downloading dependencies, binaries, and packages while building and deploying the TeraFlowSDN components.</p>
<p>Besides that, the network requirements are essentially the same than that required for running a classical Kubernetes environment. To facilitate the deployment, we extensively use <a href="https://microk8s.io/">MicroK8s</a>, thus the network requirements are, essentially, the same demanded by MicroK8s, especially, if you consider creating a Kubernetes cluster.</p>
<p>As a reference, the other deployment solutions based on VMs assume the VM is connected to a virtual network configured with the IP range <code>10.0.2.0/24</code> and have the gateway at IP <code>10.0.2.1</code>. The VMs have the IP address <code>10.0.2.10</code>.</p>
@@ -705,11 +719,11 @@ sudo apt-get dist-upgrade -y
<li>If asked to restart services, restart the default ones proposed.</li>
<li>Restart the VM when the installation is completed.</li>
</ul>
-<h3 id="112-oracle-virtual-box"><strong>1.1.2. Oracle Virtual Box</strong></h3>
+<h3 id="112-oracle-virtual-box">1.1.2. Oracle Virtual Box</h3>
<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using <a href="https://www.virtualbox.org/">Oracle VirtualBox</a>. It has been tested with VirtualBox up to version 6.1.40 r154048.</p>
<h3><u>Create a NAT Network in VirtualBox</u></h3>
-<p>In "Oracle VM VirtualBox Manager", Menu "File > Preferences... > Network", create a NAT
-network with the following specifications:</p>
+
+<p>In "Oracle VM VirtualBox Manager", Menu "File > Preferences... > Network", create a NAT network with the following specifications:</p>
<table>
<thead>
<tr>
@@ -728,8 +742,7 @@ network with the following specifications:</p>
</tr>
</tbody>
</table>
-<p>Within the newly created "TFS-NAT-Net" NAT network, configure the following IPv4
-forwarding rules:</p>
+<p>Within the newly created "TFS-NAT-Net" NAT network, configure the following IPv4 forwarding rules:</p>
<table>
<thead>
<tr>
@@ -760,7 +773,9 @@ forwarding rules:</p>
</tr>
</tbody>
</table>
+<blockquote>
<p><strong>Note</strong>: IP address 10.0.2.10 is the one that will be assigned to the VM.</p>
+</blockquote>
<h3><u>Create VM in VirtualBox:</u></h3>
<ul>
@@ -781,12 +796,13 @@ forwarding rules:</p>
</ul>
</li>
</ul>
+<blockquote>
<p><strong>Note</strong>: (*) settings to be editing after the VM is created.</p>
+</blockquote>
<h3><u>Install Ubuntu 22.04 LTS Operating System</u></h3>
-<p>In "Oracle VM VirtualBox Manager", start the VM in normal mode, and follow the
-installation procedure.
-Below we provide some installation guidelines:</p>
+<p>In "Oracle VM VirtualBox Manager", start the VM in normal mode, and follow the installation procedure.</p>
+<p>Below we provide some installation guidelines:</p>
<ul>
<li>Installation Language: English</li>
<li>Autodetect your keyboard</li>
@@ -869,7 +885,7 @@ sudo ./VBoxLinuxAdditions.run
# This command might take some minutes depending on your VM specs.
sudo reboot
</code></pre>
-<h3 id="113-vmware-fusion"><strong>1.1.3. VMWare Fusion</strong></h3>
+<h3 id="113-vmware-fusion">1.1.3. VMWare Fusion</h3>
<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using <a href="https://www.vmware.com/products/fusion.html">VMWare Fusion</a>. It has been tested with VMWare Fusion version 12 and 13.</p>
<h3><u>Create VM in VMWare Fusion:</u></h3>
@@ -927,7 +943,7 @@ $ sudo rm /swapfile</p>
<pre><code class="language-bash">sudo apt-get update -y
sudo apt-get dist-upgrade -y
</code></pre>
-<h3 id="114-openstack"><strong>1.1.4. OpenStack</strong></h3>
+<h3 id="114-openstack">1.1.4. OpenStack</h3>
<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using <a href="https://www.openstack.org/">OpenStack</a>. It has been tested with OpenStack Kolla up to Yoga version. </p>
<h3><u>Create a Security Group in OpenStack</h3>
<p></u>
@@ -988,7 +1004,9 @@ In OpenStack, go to Project - Network - Security Groups - Create Security Group
</tr>
</tbody>
</table>
+<blockquote>
<p><strong>Note</strong>: The IP address will be assigned depending on the network you have configured inside OpenStack. This IP will have to be modified in TeraFlow configuration files which by default use IP 10.0.2.10</p>
+</blockquote>
<h3><u>Create a flavour</h3>
<p></u></p>
<p><strong>From dashboard (Horizon)</strong></p>
@@ -1029,7 +1047,7 @@ sudo apt-get dist-upgrade -y
<li>If asked to restart services, restart the default ones proposed.</li>
<li>Restart the VM when the installation is completed.</li>
</ul>
-<h3 id="115-vagrant-box"><strong>1.1.5. Vagrant Box</strong></h3>
+<h3 id="115-vagrant-box">1.1.5. Vagrant Box</h3>
<p>This section describes how to create a Vagrant Box, using the base virtual machine configured in <a href="#112-oracle-virtual-box">Oracle Virtual Box</a>.</p>
<h3><u>Virtual Machine specifications</h3>
<p></u></p>
@@ -1050,8 +1068,8 @@ sudo apt-get dist-upgrade -y
<li>Ensure Network Adapter 1 is set to NAT</li>
</ul>
<h3><u>Network configurations</h3>
-<p></u>
-At Network Adapt 1, the following port-forwarding rule must be set.</p>
+<p></u></p>
+<p>At Network Adapt 1, the following port-forwarding rule must be set.</p>
<table>
<thead>
<tr>
@@ -1084,8 +1102,8 @@ At Network Adapt 1, the following port-forwarding rule must be set.</p>
<p>Make sure the disk is not configured as an LVM group!</p>
<p><img alt="Screenshot_from_2023-07-10_18-43-16" src="../images/deployment_guide/06_vagrant_box.jpg" /></p>
<h3><u>Vagrant ser</h3>
-<p></u>
-Vagrant expects by default, that in the box's OS exists the user <code>vagrant</code> with the password also being <code>vagrant</code>.</p>
+<p></u></p>
+<p>Vagrant expects by default, that in the box's OS exists the user <code>vagrant</code> with the password also being <code>vagrant</code>.</p>
<p><img alt="Screenshot_from_2023-07-10_18-54-12" src="../images/deployment_guide/07_vagrant_box.jpg" /></p>
<h3><u>SSH</h3>
<p></u></p>
@@ -1107,11 +1125,9 @@ sudo apt-get dist-upgrade -y
<li>Restart the VM when the installation is completed.</li>
</ul>
<h3><u>Install VirtualBox Guest Additions</h3>
-<p></u>
-On VirtualBox Manager, open the VM main screen. If you are running the VM in headless
-mode, right-click over the VM in the VirtualBox Manager window, and click "Show".
-If a dialog informing about how to leave the interface of the VM is shown, confirm
-by pressing the "Switch" button. The interface of the VM should appear.</p>
+<p></u></p>
+<p>On VirtualBox Manager, open the VM main screen. If you are running the VM in headless mode, right-click over the VM in the VirtualBox Manager window, and click "Show".
+If a dialog informing about how to leave the interface of the VM is shown, confirm by pressing the "Switch" button. The interface of the VM should appear.</p>
<p>Click the menu "Device > Insert Guest Additions CD image..."</p>
<p>On the VM terminal, type:</p>
<pre><code class="language-bash">sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms
@@ -1123,23 +1139,23 @@ sudo ./VBoxLinuxAdditions.run
sudo reboot
</code></pre>
<h3><u>ETSI TFS Installation</h3>
-<p></u>
-After this, proceed to <a href="#12-install-microk8s">1.2. Install Microk8s</a>, after which, return to this wiki to finish the Vagrant Box creation.</p>
+<p></u></p>
+<p>After this, proceed to <a href="#12-install-microk8s">1.2. Install Microk8s</a>, after which, return to this wiki to finish the Vagrant Box creation.</p>
<h3><u>Box configuration and creation</h3>
-<p></u>
-Make sure the ETSI TFS controller is correctly configured. <strong>You will not be able to change it after!</strong></p>
+<p></u></p>
+<p>Make sure the ETSI TFS controller is correctly configured. <strong>You will not be able to change it after!</strong></p>
<p>It is advisable to do the next configurations from a host's terminal, via a SSH connection.</p>
<pre><code class="language-bash">ssh -p 2222 vagrant@127.0.0.1
</code></pre>
<h3><u>Set root password</h3>
-<p></u>
-Set the root password to <code>vagrant</code>.</p>
+<p></u></p>
+<p>Set the root password to <code>vagrant</code>:</p>
<pre><code class="language-bash">sudo passwd root
</code></pre>
<h3><u>Set the superuser</h3>
-<p></u>
-Set up the Vagrant user so that it’s able to use sudo without being prompted for a password.
-Anything in the <code>/etc/sudoers.d/*</code> directory is included in the sudoers privileges when created by the root user.
+<p></u></p>
+<p>Set up the Vagrant user so that it’s able to use sudo without being prompted for a password.</p>
+<p>Anything in the <code>/etc/sudoers.d/*</code> directory is included in the sudoers privileges when created by the root user.
Create a new sudo file.</p>
<pre><code class="language-bash">sudo visudo -f /etc/sudoers.d/vagrant
</code></pre>
@@ -1152,16 +1168,16 @@ vagrant ALL=(ALL) NOPASSWD:ALL
</code></pre>
<p>Issuing this command should result in an immediate response without a request for a password.</p>
<h3><u>Install the Vagrant key</h3>
-<p></u>
-Vagrant uses a default set of SSH keys for you to directly connect to boxes via the CLI command <code>vagrant ssh</code>, after which it creates a new set of SSH keys for your new box. Because of this, we need to load the default key to be able to access the box after created.</p>
+<p></u></p>
+<p>Vagrant uses a default set of SSH keys for you to directly connect to boxes via the CLI command <code>vagrant ssh</code>, after which it creates a new set of SSH keys for your new box. Because of this, we need to load the default key to be able to access the box after created.</p>
<pre><code class="language-bash">chmod 0700 /home/vagrant/.ssh
wget --no-check-certificate https://raw.github.com/mitchellh/vagrant/master/keys/vagrant.pub -O /home/vagrant/.ssh/authorized_keys
chmod 0600 /home/vagrant/.ssh/authorized_keys
chown -R vagrant /home/vagrant/.ssh
</code></pre>
<h3><u>Configure the OpenSSH Server</h3>
-<p></u>
-Edit the <code>/etc/ssh/sshd_config</code> file:</p>
+<p></u></p>
+<p>Edit the <code>/etc/ssh/sshd_config</code> file:</p>
<pre><code class="language-bash">sudo vim /etc/ssh/sshd_config
</code></pre>
<p>And uncomment the following line:</p>
@@ -1171,16 +1187,16 @@ Edit the <code>/etc/ssh/sshd_config</code> file:</p>
<pre><code class="language-bash">sudo service ssh restart
</code></pre>
<h3><u>Package the box</h3>
-<p></u>
-Before you package the box, if you intend to make your box public, it is best to clean your bash history with:</p>
+<p></u></p>
+<p>Before you package the box, if you intend to make your box public, it is best to clean your bash history with:</p>
<pre><code class="language-bash">history -c
</code></pre>
<p>Exit the SSH connection, and <strong>at you're host machine</strong>, package the VM:</p>
<pre><code class="language-bash">vagrant package --base teraflowsdncontroller --output teraflowsdncontroller.box
</code></pre>
<h3><u>Test run the box</h3>
-<p></u>
-Add the base box to you local Vagrant box list:</p>
+<p></u></p>
+<p>Add the base box to you local Vagrant box list:</p>
<pre><code class="language-bash">vagrant box add --name teraflowsdncontroller ./teraflowsdncontroller.box
</code></pre>
<p>Now you should try to run it, for that you'll need to create a <strong>Vagrantfile</strong>. For a simple run, this is the minimal required code for this box:</p>
@@ -1241,8 +1257,8 @@ end
<pre><code class="language-bash">BRANCH=develop vagrant up controller
</code></pre>
<h3><u>Linkerd DNS rebinding bypass</h3>
-<p></u>
-Because of Linkerd's security measures against DNS rebinding, a reverse proxy, that modifies the request's header <code>Host</code> field, is needed to expose the GUI to the host. The previous Vagrantfile already deploys such configurations, for that, all you need to do is create the <code>reverse-proxy-linkerdviz.sh</code> file in the same directory. The content of this file is displayed below.</p>
+<p></u></p>
+<p>Because of Linkerd's security measures against DNS rebinding, a reverse proxy, that modifies the request's header <code>Host</code> field, is needed to expose the GUI to the host. The previous Vagrantfile already deploys such configurations, for that, all you need to do is create the <code>reverse-proxy-linkerdviz.sh</code> file in the same directory. The content of this file is displayed below.</p>
<pre><code class="language-bash"># Install NGINX
sudo apt update && sudo apt install nginx -y
@@ -1273,7 +1289,7 @@ linkerd viz dashboard &
echo "Linkerd Viz dashboard running!"
</code></pre>
-<h2 id="12-install-microk8s"><strong>1.2. Install MicroK8s</strong></h2>
+<h2 id="12-install-microk8s">1.2. Install MicroK8s</h2>
<p>This section describes how to deploy the MicroK8s Kubernetes platform and configure it to be used with ETSI TeraFlowSDN controller. Besides, Docker is installed to build docker images for the ETSI TeraFlowSDN controller.</p>
<p>The steps described in this section might take some minutes depending on your internet connection speed and the resources assigned to your VM, or the specifications of your physical server.</p>
<p>To facilitate work, these steps are easier to be executed through an SSH connection, for instance using tools like <a href="https://www.putty.org/">PuTTY</a> or <a href="https://mobaxterm.mobatek.net/">MobaXterm</a>.</p>
@@ -1292,7 +1308,9 @@ sudo apt-get dist-upgrade -y
Install Docker CE and Docker BuildX plugin</p>
<pre><code class="language-bash">sudo apt-get install -y docker.io docker-buildx
</code></pre>
+<blockquote>
<p><strong>NOTE</strong>: Starting from Docker v23, <a href="https://docs.docker.com/build/architecture/">Build architecture</a> has been updated and <code>docker build</code> command entered into deprecation process in favor of the new <code>docker buildx build</code> command. Package <code>docker-buildx</code> provides the new <code>docker buildx build</code> command.</p>
+</blockquote>
<p>Add key "insecure-registries" with the private repository to the daemon configuration. It is done in two commands since
sometimes read from and write to same file might cause trouble.</p>
<pre><code class="language-bash">if [ -s /etc/docker/daemon.json ]; then cat /etc/docker/daemon.json; else echo '{}'; fi \
@@ -1323,15 +1341,16 @@ sudo snap alias microk8s.kubectl kubectl
and pod-to-Internet traffic.
To do so, first check the status.
If <code>ufw</code> is active, use the following command to enable the communication.</p>
-<pre><code class="language-bash">
-# Verify status of ufw firewall
+<pre><code class="language-bash"># Verify status of ufw firewall
sudo ufw status
# If ufw is active, install following rules to enable access pod-to-pod and pod-to-internet
sudo ufw allow in on cni0 && sudo ufw allow out on cni0
sudo ufw default allow routed
</code></pre>
+<blockquote>
<p><strong>NOTE</strong>: MicroK8s can be used to compose a Highly Available Kubernetes cluster enabling you to construct an environment combining the CPU, RAM and storage resources of multiple machines. If you are interested in this procedure, review the official instructions in <a href="https://ubuntu.com/tutorials/getting-started-with-kubernetes-ha">How to build a highly available Kubernetes cluster with MicroK8s</a>, in particular, the step <a href="https://ubuntu.com/tutorials/getting-started-with-kubernetes-ha#4-create-a-microk8s-multinode-cluster">Create a MicroK8s multi-node cluster</a>.</p>
+</blockquote>
<p><strong>References:</strong></p>
<ul>
<li><a href="https://microk8s.io/#install-microk8s">The lightweight Kubernetes > Install MicroK8s</a></li>
@@ -1460,10 +1479,10 @@ TeraFlowSDN controller versions can be found in the appropriate release tags and
git checkout develop
</code></pre>
<h3><u>Prepare a deployment script with the deployment settings</h3>
-<p></u>
-Create a new deployment script, e.g., <code>my_deploy.sh</code>, adding the appropriate settings as
-follows.
-This section provides just an overview of the available settings. An example <a href="https://labs.etsi.org/rep/tfs/controller/-/blob/master/my_deploy.sh"><code>my_deploy.sh</code></a> script is provided in the root folder of the project for your convenience with full description of all the settings.</p>
+<p></u></p>
+<p>Create a new deployment script, e.g., <code>my_deploy.sh</code>, adding the appropriate settings as
+follows.</p>
+<p>This section provides just an overview of the available settings. An example <a href="https://labs.etsi.org/rep/tfs/controller/-/blob/master/my_deploy.sh"><code>my_deploy.sh</code></a> script is provided in the root folder of the project for your convenience with full description of all the settings.</p>
<p><strong>Note</strong>: The example <code>my_deploy.sh</code> script provides reasonable settings for deploying a functional and complete enough TeraFlowSDN controller, and a brief description of their meaning. To see extended descriptions, check scripts in the <code>deploy</code> folder.</p>
<pre><code class="language-bash">cd ~/tfs-ctrl
tee my_deploy.sh >/dev/null << EOF
@@ -1780,7 +1799,7 @@ You can avoid sourcing <code>my_deploy.sh</code> if it has been already done.</p
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/development_guide/index.html b/public/develop/development_guide/index.html
index b97aa35e6fd43886029b2711ec3a867ea08bdb4e..33212e1372eaf6eca6fda2ec8bcd5784c4e03646 100644
--- a/public/develop/development_guide/index.html
+++ b/public/develop/development_guide/index.html
@@ -22,7 +22,7 @@
<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -260,6 +261,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -287,6 +289,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -298,6 +301,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -423,6 +427,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -443,6 +448,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -463,6 +469,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -483,6 +490,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -503,6 +511,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -523,6 +532,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -543,6 +553,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -566,6 +577,7 @@
+
<h1>2. Development Guide</h1>
<h2 id="21-configure-environment"><strong>2.1. Configure Environment</strong></h2>
@@ -1148,7 +1160,7 @@ packages, add the following file into your working space root folder:</p>
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/faq/index.html b/public/develop/faq/index.html
index 332f0e2b0edeac65548c3ba5ffbdb29fd997657c..c2c0b247a3ae02852e8336aa0250ba89de8d352a 100644
--- a/public/develop/faq/index.html
+++ b/public/develop/faq/index.html
@@ -20,7 +20,7 @@
<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -28,7 +28,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -76,7 +76,7 @@
<div data-md-component="skip">
- <a href="#how-can-i-contribute-to-tfs-documentation" class="md-skip">
+ <a href="#what-if-i-have-some-issues-while-installingusing-tfs" class="md-skip">
Skip to content
</a>
@@ -238,6 +238,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -258,6 +259,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -278,6 +280,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -298,6 +301,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -318,6 +322,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -338,6 +343,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -358,6 +364,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -378,6 +385,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -398,6 +406,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -425,6 +434,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -436,6 +446,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -454,15 +465,6 @@
</label>
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
- <li class="md-nav__item">
- <a href="#how-can-i-contribute-to-tfs-documentation" class="md-nav__link">
- <span class="md-ellipsis">
- How can I contribute to TFS Documentation?
- </span>
- </a>
-
-</li>
-
<li class="md-nav__item">
<a href="#what-if-i-have-some-issues-while-installingusing-tfs" class="md-nav__link">
<span class="md-ellipsis">
@@ -495,13 +497,11 @@
+
<h1>9. FAQ</h1>
<p>This section addresses common questions you may encounter while working with TFS software.</p>
-<h2 id="how-can-i-contribute-to-tfs-documentation"><strong>How can I contribute to TFS Documentation?</strong></h2>
-<p>Please refer to the detailed procedure outlined in our project's README within the GitLab repository. It contains essential instructions and guidelines to assist you.</p>
-<p>See the README to <a href="https://labs.etsi.org/rep/tfs/documentation#what-should-be-the-flow-to-add-documentation-during-development">contribute documentation</a>.</p>
-<h2 id="what-if-i-have-some-issues-while-installingusing-tfs"><strong>What if I have some issues while installing/using TFS?</strong></h2>
+<h2 id="what-if-i-have-some-issues-while-installingusing-tfs">What if I have some issues while installing/using TFS?</h2>
<p>Feel free to join our Slack community channel and ask questions! Our experts will soon reply your question.</p>
<p>General <a href="https://join.slack.com/t/teraflowsdn/shared_invite/zt-18gc5jvkh-1_DEZHFhxeuOqzJZPq~U~A">Slack Channel</a> </p>
<hr />
@@ -639,7 +639,7 @@
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/features_and_bugs/index.html b/public/develop/features_and_bugs/index.html
index 342dab1ab06533a275e6803f1b64b6d8513b7ae9..1bc47faf8c8ad94e5ef4b8628dd45a8b2552082e 100644
--- a/public/develop/features_and_bugs/index.html
+++ b/public/develop/features_and_bugs/index.html
@@ -22,7 +22,7 @@
<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -260,6 +261,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -280,6 +282,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -300,6 +303,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -327,6 +331,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -338,6 +343,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -403,6 +409,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -423,6 +430,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -443,6 +451,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -463,6 +472,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -483,6 +493,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -506,6 +517,7 @@
+
<h1>4. Feature and bugs</h1>
<p>This section describes the procedures to request new features and enhancements, report bugs, and the workflows implemented to manage them.</p>
@@ -843,7 +855,7 @@ Implementing a feature requires resources, and resources come from the members,
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/index.html b/public/develop/index.html
index 07917ea1aedd9d0cee9ec72e201b826f04a7660e..8aa8db71a86d93b0fc62b44a81fd9eb0ea71bb17 100644
--- a/public/develop/index.html
+++ b/public/develop/index.html
@@ -20,7 +20,7 @@
<link rel="icon" href="images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -28,7 +28,7 @@
- <link rel="stylesheet" href="assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="assets/stylesheets/palette.06af60db.min.css">
@@ -247,6 +247,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -268,6 +269,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -288,6 +290,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -308,6 +311,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -328,6 +332,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -348,6 +353,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -368,6 +374,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -388,6 +395,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -408,6 +416,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -428,6 +437,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -451,6 +461,7 @@
+
<p><img src="images/logos/TeraFlowSDN_tr.png" alt="drawing" width="200"/></p>
<p>Welcome to the ETSI TeraFlowSDN (TFS) Controller wiki!</p>
<p>This wiki provides a walkthrough on how to prepare your environment for executing and contributing to the ETSI SDG TeraFlowSDN.
@@ -689,7 +700,7 @@ SDG team through
<script id="__config" type="application/json">{"base": ".", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/run_experiments/index.html b/public/develop/run_experiments/index.html
index f323354e3edfa7db94bc615186f1413bee49ff14..801ff9727d7598b05d63a7747d607cffe67f2637 100644
--- a/public/develop/run_experiments/index.html
+++ b/public/develop/run_experiments/index.html
@@ -22,7 +22,7 @@
<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -260,6 +261,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -280,6 +282,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -307,6 +310,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -318,6 +322,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -392,6 +397,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -412,6 +418,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -432,6 +439,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -452,6 +460,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -472,6 +481,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -492,6 +502,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -515,6 +526,7 @@
+
<h1>3. Run Experiments</h1>
<p>This section walks you through the process of running experiments in TeraFlowSDN on top of a machine running MicroK8s Kubernetes platform.
@@ -909,7 +921,7 @@ Besides, in the <em>Devices</em> tab you can see that the appropriate configurat
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/search/search_index.json b/public/develop/search/search_index.json
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-{"config":{"lang":["en"],"separator":"[\\s\\-]+","pipeline":["stopWordFilter"]},"docs":[{"location":"","title":"0. Home","text":"<p>Welcome to the ETSI TeraFlowSDN (TFS) Controller wiki!</p> <p>This wiki provides a walkthrough on how to prepare your environment for executing and contributing to the ETSI SDG TeraFlowSDN. Besides, it describes how to run some example experiments.</p>"},{"location":"#try-teraflowsdn-release-40","title":"Try TeraFlowSDN Release 4.0","text":"<p>The new release launched on November 5th, 2024 incorporates a number of new features, improvements, and bug resolutions. Try it by following the guides below, and feel free to give us your feedback. See the Release Notes.</p>"},{"location":"#requisites","title":"Requisites","text":"<p>The guides and walkthroughs below make some reasonable assumptions to simplify the deployment of the TFS controller, the execution of experiments and tests, and the development of new contributions. In particular, we assume:</p> <ul> <li>A physical server or virtual machine for running the TFS controller with the following minimum specifications (check section Configure your Machine for additional details):<ul> <li>4 cores / vCPUs</li> <li>8 GB of RAM (10 GB of RAM if you want to develop)</li> <li>60 GB of disk (100 GB of disk if you want to develop)</li> <li>1 NIC card</li> </ul> </li> <li>VSCode with the Remote SSH extension</li> <li>Working machine software:<ul> <li>Ubuntu Server 24.04.1 LTS or Ubuntu Server 22.04.5 LTS or Ubuntu Server 20.04.6 LTS</li> <li>MicroK8s v1.29.10</li> </ul> </li> </ul> <p>Use the Wiki menu in the left side of this page to navigate through the various contents of this wiki.</p>"},{"location":"#guides-and-walkthroughs","title":"Guides and Walkthroughs","text":"<p>The following guides and walkthroughs are provided:</p> <ul> <li>1. Deployment Guide</li> <li>2. Development Guide</li> <li>3. Run Experiments</li> <li>4. Features and Bugs</li> <li>5. Supported SBIs and Network Elements</li> <li>6. Supported NBIs</li> <li>7. Supported Service Handlers</li> <li>8. Troubleshooting</li> </ul>"},{"location":"#tutorials-and-tfs-virtual-machine","title":"Tutorials and TFS Virtual Machine","text":"<p>This section provides access to the links and all the materials prepared for the tutorials and hackfests involving ETSI TeraFlowSDN.</p> <ul> <li> <p>TFS Hackfest #5 (Sophia Antipolis, FR - 12-14 November 2024)</p> <ul> <li>The link includes explanatory material on beginner-friendly comprehensive hands-on tutorial dedicated to exploring the fundamental concepts, protocols, and standards needed to deploy, onboard, control, and monitor network devices like programmable routers and white boxes. This Hackfest provides participants with the opportunity to master the basics of TeraFlowSDN, enhancing their Smart Networks and Services projects through an industry-oriented, cutting-edge network automation framework. In addition, attendees will learn how to engage with the community to contribute code, new features and bug reports.</li> </ul> </li> <li> <p>TFS Hackfest #4 (Athens, 21-22 May 2024)</p> <ul> <li>The link includes explanatory material on BGP-LS Speaker for TeraFlowSDN, how to develop new components, the set of guided walkthrough, and the details on the interactive sessions the participants addressed (and recordings).</li> </ul> </li> <li> <p>TFS Hackfest #3 (Castelldefels, 16-17 October 2023)</p> <ul> <li>The link includes explanatory material on P4 for TeraFlowSDN, the set of guided walkthrough, and the details on the interactive sessions the participants addressed (and recordings), as well as a TFS Virtual Machine (Release 2.1).</li> </ul> </li> <li> <p>TFS Hackfest #2 (Madrid, 20-21 June 2023)</p> <ul> <li>The link includes explanatory material on gNMI and ContainerLab for TeraFlowSDN, the set of challenges the participants addressed (and recordings), as well as a TFS Virtual Machine (Pre-Release 2.1).</li> </ul> </li> <li> <p>OFC SC472 (San Diego, 6 March 2023)</p> <ul> <li>The link includes a tutorial-style slide deck, as well as a TFS Virtual Machine (Release 2).</li> </ul> </li> <li> <p>TFS Hackfest #1 (Amsterdam, 20 October 2022)</p> <ul> <li>The link includes a tutorial-style slide deck (and recordings), as well as a TFS Virtual Machine (Pre-Release 2).</li> </ul> </li> </ul>"},{"location":"#versions","title":"Versions","text":"<p>New versions of TeraFlowSDN are periodically released. Each release is properly tagged and a branch is kept for its future bug fixing, if needed.</p> <ul> <li>The branch master, points always to the latest stable version of the TeraFlowSDN controller.</li> <li>The branches release/X.Y.Z, point to the code for the different release versions indicated in branch name.<ul> <li>Code in these branches can be considered stable, and no new features are planned.</li> <li>In case of bugs, point releases increasing revision number (Z) might be created.</li> </ul> </li> <li>The main development branch is named as develop.<ul> <li>Use with care! Might not be stable.</li> <li>The latest developments and contributions are added to this branch for testing and validation before reaching a release. </li> </ul> </li> </ul> <p>To choose the appropriate branch, follow the steps described in 1.3. Deploy TeraFlowSDN > Checkout the Appropriate Git Branch</p>"},{"location":"#events","title":"Events","text":"<p>Find here after the list of past and future TFS Events:</p> <ul> <li>ETSI TeraFlowSDN Events </li> </ul>"},{"location":"#contact","title":"Contact","text":"<p>If your environment does not fit with the proposed assumptions and you experience issues preparing it to work with the ETSI TeraFlowSDN controller, contact the ETSI TeraFlowSDN SDG team through Slack</p>"},{"location":"deployment_guide/","title":"1. Deployment Guide","text":"<p>This section walks you through the process of deploying TeraFlowSDN on top of a machine running MicroK8s Kubernetes platform. The guide includes the details on configuring and installing the machine, installing and configuring MicroK8s, and deploying and reporting the status of the TeraFlowSDN controller.</p>"},{"location":"deployment_guide/#11-configure-your-machine","title":"1.1. Configure your Machine","text":"<p>In this section, we describe how to configure a machine (physical or virtual) to be used as the deployment, execution, and development environment for the ETSI TeraFlowSDN controller. Choose your preferred environment below and follow the instructions provided.</p> <p>NOTE: If you already have a remote physical server fitting the requirements specified in this section feel free to use it instead of deploying a local VM. Check 1.1.1. Physical Server for further details.</p> <p>Virtualization platforms tested are:</p> <ul> <li>Physical Server</li> <li>Oracle Virtual Box</li> <li>VMWare Fusion</li> <li>OpenStack</li> <li>Vagrant Box</li> </ul>"},{"location":"deployment_guide/#111-physical-server","title":"1.1.1. Physical ServerServer SpecificationsClusterized DeploymentNetworkingOperating SystemUpgrade the Ubuntu distribution","text":"<p>This section describes how to configure a physical server for running ETSI TeraFlowSDN(TFS) controller.</p> <p>Minimum Server Specifications for development and basic deployment</p> <ul> <li>CPU: 4 cores</li> <li>RAM: 8 GB</li> <li>Disk: 60 GB</li> <li>1 GbE NIC</li> </ul> <p>Recommended Server Specifications for development and basic deployment</p> <ul> <li>CPU: 6 cores</li> <li>RAM: 12 GB</li> <li>Disk: 80 GB</li> <li>1 GbE NIC</li> </ul> <p>Server Specifications for best development and deployment experience</p> <ul> <li>CPU: 8 cores</li> <li>RAM: 32 GB</li> <li>Disk: 120 GB</li> <li>1 GbE NIC</li> </ul> <p>NOTE: the specifications listed above are provided as a reference. They depend also on the CPU clock frequency, the RAM memory, the disk technology and speed, etc.</p> <p>For development purposes, it is recommended to run the VSCode IDE (or the IDE of your choice) in a more powerful server, for instance, the recommended server specifications for development and basic deployment.</p> <p>Given that TeraFlowSDN follows a micro-services architecture, for the deployment, it might be better to use many clusterized servers with many slower cores than a single server with few highly performant cores.</p> <p>You might consider creating a cluster of machines each featuring, at least, the minimum server specifications. That solution brings you scalability in the future.</p> <p>No explicit indications are given in terms of networking besides that servers need access to the Internet for downloading dependencies, binaries, and packages while building and deploying the TeraFlowSDN components.</p> <p>Besides that, the network requirements are essentially the same than that required for running a classical Kubernetes environment. To facilitate the deployment, we extensively use MicroK8s, thus the network requirements are, essentially, the same demanded by MicroK8s, especially, if you consider creating a Kubernetes cluster.</p> <p>As a reference, the other deployment solutions based on VMs assume the VM is connected to a virtual network configured with the IP range <code>10.0.2.0/24</code> and have the gateway at IP <code>10.0.2.1</code>. The VMs have the IP address <code>10.0.2.10</code>.</p> <p>The minimum required ports to be accessible are:</p> <ul> <li>22/SSH : for management purposes</li> <li>80/HTTP : for the TeraFlowSDN WebUI and Grafana dashboard</li> <li>8081/HTTPS : for the CockroachDB WebUI</li> </ul> <p>Other ports might be required if you consider to deploy addons such as Kubernetes observability, etc. The details on these ports are left appart given they might vary depending on the Kubernetes environment you use.</p> <p>The recommended Operating System for deploying TeraFlowSDN is Ubuntu Server 24.04 LTS or Ubuntu Server 22.04 LTS or Ubuntu Server 20.04 LTS. Other version might work, but we have not tested them. We strongly recommend using Long Term Support (LTS) versions as they provide better stability.</p> <p>Below we provide some installation guidelines:</p> <ul> <li>Installation Language: English</li> <li>Autodetect your keyboard</li> <li>If asked, select \"Ubuntu Server\" (do not select \"Ubuntu Server (minimized)\").</li> <li>Configure static network specifications (adapt them based on your particular setup):</li> </ul> Interface IPv4 Method Subnet Address Gateway Name servers Search domains enp0s3 Manual 10.0.2.0/24 10.0.2.10 10.0.2.1 8.8.8.8,8.8.4.4 <ul> <li>Leave proxy and mirror addresses as they are</li> <li>Let the installer self-upgrade (if asked).</li> <li>Use an entire disk for the installation<ul> <li>Disable setup of the disk as LVM group</li> <li>Double check that NO swap space is allocated in the partition table. Kubernetes does not work properly with SWAP.</li> </ul> </li> <li>Configure your user and system names:<ul> <li>User name: <code>TeraFlowSDN</code></li> <li>Server's name: <code>tfs-vm</code></li> <li>Username: <code>tfs</code></li> <li>Password: <code>tfs123</code></li> </ul> </li> <li>Install Open SSH Server<ul> <li>Import SSH keys, if any.</li> </ul> </li> <li>Featured Server Snaps<ul> <li>Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall them in case of trouble with.</li> </ul> </li> <li>Let the system install and upgrade the packages.<ul> <li>This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your Internet connection speed.</li> </ul> </li> <li>Restart the VM when the installation is completed.</li> </ul> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul>"},{"location":"deployment_guide/#112-oracle-virtual-box","title":"1.1.2. Oracle Virtual BoxCreate a NAT Network in VirtualBoxCreate VM in VirtualBox:Install Ubuntu 22.04 LTS Operating System","text":"<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using Oracle VirtualBox. It has been tested with VirtualBox up to version 6.1.40 r154048.</p> <p>In \"Oracle VM VirtualBox Manager\", Menu \"File > Preferences... > Network\", create a NAT network with the following specifications:</p> Name CIDR DHCP IPv6 TFS-NAT-Net 10.0.2.0/24 Disabled Disabled <p>Within the newly created \"TFS-NAT-Net\" NAT network, configure the following IPv4 forwarding rules:</p> Name Protocol Host IP Host Port Guest IP Guest Port SSH TCP 127.0.0.1 2200 10.0.2.10 22 HTTP TCP 127.0.0.1 8080 10.0.2.10 80 <p>Note: IP address 10.0.2.10 is the one that will be assigned to the VM.</p> <ul> <li>Name: TFS-VM</li> <li>Type/Version: Linux / Ubuntu (64-bit)</li> <li>CPU (*): 4 vCPUs @ 100% execution capacity</li> <li>RAM: 8 GB</li> <li>Disk: 60 GB, Virtual Disk Image (VDI), Dynamically allocated</li> <li>Optical Drive ISO Image: \"ubuntu-22.04.X-live-server-amd64.iso\"<ul> <li>Download the latest Long Term Support (LTS) version of the Ubuntu Server image from Ubuntu 22.04 LTS, e.g., \"ubuntu-22.04.X-live-server-amd64.iso\".</li> <li>Note: use Ubuntu Server image instead of Ubuntu Desktop to create a lightweight VM.</li> </ul> </li> <li>Network Adapter 1 (*): enabled, attached to NAT Network \"TFS-NAT-Net\"</li> <li>Minor adjustments (*):<ul> <li>Audio: disabled</li> <li>Boot order: disable \"Floppy\"</li> </ul> </li> </ul> <p>Note: (*) settings to be editing after the VM is created.</p> <p>In \"Oracle VM VirtualBox Manager\", start the VM in normal mode, and follow the installation procedure. Below we provide some installation guidelines:</p> <ul> <li>Installation Language: English</li> <li>Autodetect your keyboard</li> <li>If asked, select \"Ubuntu Server\" (do not select \"Ubuntu Server (minimized)\").</li> <li>Configure static network specifications:</li> </ul> Interface IPv4 Method Subnet Address Gateway Name servers Search domains enp0s3 Manual 10.0.2.0/24 10.0.2.10 10.0.2.1 8.8.8.8,8.8.4.4 <ul> <li>Leave proxy and mirror addresses as they are</li> <li>Let the installer self-upgrade (if asked).</li> <li>Use an entire disk for the installation<ul> <li>Disable setup of the disk as LVM group</li> <li>Double check that NO swap space is allocated in the partition table. Kubernetes does not work properly with SWAP.</li> </ul> </li> <li>Configure your user and system names:<ul> <li>User name: TeraFlowSDN</li> <li>Server's name: tfs-vm</li> <li>Username: tfs</li> <li>Password: tfs123</li> </ul> </li> <li>Install Open SSH Server<ul> <li>Import SSH keys, if any.</li> </ul> </li> <li>Featured Server Snaps<ul> <li>Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall them in case of trouble with.</li> </ul> </li> <li>Let the system install and upgrade the packages.<ul> <li>This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your Internet connection speed.</li> </ul> </li> <li>Restart the VM when the installation is completed.</li> </ul> <p>Upgrade the Ubuntu distribution</p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul> <p>Install VirtualBox Guest Additions</p> <p>On VirtualBox Manager, open the VM main screen. If you are running the VM in headless mode, right click over the VM in the VirtualBox Manager window and click \"Show\". If a dialog informing about how to leave the interface of the VM is shown, confirm pressing \"Switch\" button. The interface of the VM should appear.</p> <p>Click menu \"Device > Insert Guest Additions CD image...\"</p> <p>On the VM terminal, type:</p> <pre><code>sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms\n # This command might take some minutes depending on your VM specs and your Internet access speed.\nsudo mount /dev/cdrom /mnt/\ncd /mnt/\nsudo ./VBoxLinuxAdditions.run\n # This command might take some minutes depending on your VM specs.\nsudo reboot\n</code></pre>"},{"location":"deployment_guide/#113-vmware-fusion","title":"1.1.3. VMWare FusionCreate VM in VMWare Fusion:Install Ubuntu 22.04.1 LTS Operating SystemUpgrade the Ubuntu distribution","text":"<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using VMWare Fusion. It has been tested with VMWare Fusion version 12 and 13.</p> <p>In \"VMWare Fusion\" manager, create a new network from the \"Settings/Network\" menu.</p> <ul> <li>Unlock to make changes</li> <li>Press the + icon and create a new network</li> <li>Change the name to TFS-NAT-Net</li> <li>Check \"Allow virtual machines on this network to connect to external network (NAT)\"</li> <li>Do not check \"Enable IPv6\"</li> <li>Add port forwarding for HTTP and SSH</li> <li>Uncheck \"Provide address on this network via DHCP\"</li> </ul> <p>Create a new VM an Ubuntu 22.04.1 ISO:</p> <ul> <li>Display Name: TeraFlowSDN</li> <li>Username: tfs</li> <li>Password: tfs123</li> </ul> <p>On the next screen press \"Customize Settings\", save the VM and in \"Settings\" change:</p> <ul> <li>Change to use 4 CPUs</li> <li>Change to access 8 GB of RAM</li> <li>Change disk to size 60 GB</li> <li>Change the network interface to use the previously created TFS-NAT-Net</li> </ul> <p>Run the VM to start the installation.</p> <p>The installation will be automatic, without any configuration required.</p> <ul> <li> <p>Configure the guest IP, gateway and DNS:</p> <p>Using the Network Settings for the wired connection, set the IP to 10.0.2.10, the mask to 255.255.255.0, the gateway to 10.0.2.2 and the DNS to 10.0.2.2.</p> </li> <li> <p>Disable and remove swap file:</p> <p>$ sudo swapoff -a $ sudo rm /swapfile</p> <p>Then you can remove or comment the /swapfile entry in /etc/fstab</p> </li> <li> <p>Install Open SSH Server</p> <ul> <li>Import SSH keys, if any.</li> </ul> </li> <li> <p>Restart the VM when the installation is completed.</p> </li> </ul> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre>"},{"location":"deployment_guide/#114-openstack","title":"1.1.4. OpenStackCreate a Security Group in OpenStack <p> In OpenStack, go to Project - Network - Security Groups - Create Security Group with name TFS</p> <p>Add the following rules:</p> Direction Ether Type IP Protocol Port Range Remote IP Prefix Ingress IPv4 TCP 22 (SSH) 0.0.0.0/0 Ingress IPv4 TCP 2200 0.0.0.0/0 Ingress IPv4 TCP 8080 0.0.0.0/0 Ingress IPv4 TCP 80 0.0.0.0/0 Egress IPv4 Any Any 0.0.0.0/0 Egress IPv6 Any Any ::/0 <p>Note: The IP address will be assigned depending on the network you have configured inside OpenStack. This IP will have to be modified in TeraFlow configuration files which by default use IP 10.0.2.10</p> Create a flavour <p></p> <p>From dashboard (Horizon)</p> <p>Go to Admin - Compute - Flavors and press Create Flavor</p> <ul> <li>Name: TFS</li> <li>VCPUs: 4</li> <li>RAM (MB): 8192</li> <li>Root Disk (GB): 60</li> </ul> <p>From CLI</p> <pre><code> openstack flavor create TFS --id auto --ram 8192 --disk 60 --vcpus 8\n</code></pre> Create an instance in OpenStack: <p></p> <ul> <li>Instance name: TFS-VM</li> <li>Origin: [Ubuntu-22.04 cloud image] (https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img)</li> <li>Create new volume: No</li> <li>Flavor: TFS</li> <li>Networks: extnet </li> <li>Security Groups: TFS</li> <li>Configuration: Include the following cloud-config</li> </ul> <pre><code>#cloud-config\n# Modifies the password for the VM instance\nusername: ubuntu\npassword: <your-password>\nchpasswd: { expire: False }\nssh_pwauth: True\n</code></pre> Upgrade the Ubuntu distribution <p></p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul>","text":"<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using OpenStack. It has been tested with OpenStack Kolla up to Yoga version. </p>"},{"location":"deployment_guide/#115-vagrant-box","title":"1.1.5. Vagrant Box <p>This section describes how to create a Vagrant Box, using the base virtual machine configured in Oracle Virtual Box.</p> Virtual Machine specifications <p></p> <p>Most of the specifications can be as specified in the Oracle Virtual Box page, however, there are a few particularities to Vagrant that must be accommodated, such as:</p> <ul> <li>Virtual Hard Disk<ul> <li>Size: 60GB (at least)</li> <li>Type: VMDK</li> </ul> </li> </ul> <p></p> <p>Also, before initiating the VM and installing the OS, we'll need to:</p> <ul> <li>Disable Floppy in the 'Boot Order'</li> <li>Disable audio</li> <li>Disable USB</li> <li>Ensure Network Adapter 1 is set to NAT</li> </ul> Network configurations <p> At Network Adapt 1, the following port-forwarding rule must be set.</p> Name Protocol Host IP Host Port Guest IP Guest Port SSH TCP 2222 22 <p></p> Installing the OS <p></p> <p>For a Vagrant Box, it is generally suggested that the ISO's server version is used, as it is intended to be used via SSH, and any web GUI is expected to be forwarded to the host.</p> <p></p> <p></p> <p></p> <p>Make sure the disk is not configured as an LVM group!</p> <p></p> Vagrant ser <p> Vagrant expects by default, that in the box's OS exists the user <code>vagrant</code> with the password also being <code>vagrant</code>.</p> <p></p> SSH <p></p> <p>Vagrant uses SSH to connect to the boxes, so installing it now will save the hassle of doing it later.</p> <p></p> Features server snaps <p></p> <p>Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall them in case of trouble with.</p> Updates <p></p> <p>Let the system install and upgrade the packages. This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your Internet connection speed.</p> Upgrade the Ubuntu distribution <p></p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul> Install VirtualBox Guest Additions <p> On VirtualBox Manager, open the VM main screen. If you are running the VM in headless mode, right-click over the VM in the VirtualBox Manager window, and click \"Show\". If a dialog informing about how to leave the interface of the VM is shown, confirm by pressing the \"Switch\" button. The interface of the VM should appear.</p> <p>Click the menu \"Device > Insert Guest Additions CD image...\"</p> <p>On the VM terminal, type:</p> <pre><code>sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms\n # This command might take some minutes depending on your VM specs and your Internet access speed.\nsudo mount /dev/cdrom /mnt/\ncd /mnt/\nsudo ./VBoxLinuxAdditions.run\n # This command might take some minutes depending on your VM specs.\nsudo reboot\n</code></pre> ETSI TFS Installation <p> After this, proceed to 1.2. Install Microk8s, after which, return to this wiki to finish the Vagrant Box creation.</p> Box configuration and creation <p> Make sure the ETSI TFS controller is correctly configured. You will not be able to change it after!</p> <p>It is advisable to do the next configurations from a host's terminal, via a SSH connection.</p> <pre><code>ssh -p 2222 vagrant@127.0.0.1\n</code></pre> Set root password <p> Set the root password to <code>vagrant</code>.</p> <pre><code>sudo passwd root\n</code></pre> Set the superuser <p> Set up the Vagrant user so that it\u2019s able to use sudo without being prompted for a password. Anything in the <code>/etc/sudoers.d/*</code> directory is included in the sudoers privileges when created by the root user. Create a new sudo file.</p> <pre><code>sudo visudo -f /etc/sudoers.d/vagrant\n</code></pre> <p>and add the following lines</p> <pre><code># add vagrant user\nvagrant ALL=(ALL) NOPASSWD:ALL\n</code></pre> <p>You can now test that it works by running a simple command.</p> <pre><code>sudo pwd\n</code></pre> <p>Issuing this command should result in an immediate response without a request for a password.</p> Install the Vagrant key <p> Vagrant uses a default set of SSH keys for you to directly connect to boxes via the CLI command <code>vagrant ssh</code>, after which it creates a new set of SSH keys for your new box. Because of this, we need to load the default key to be able to access the box after created.</p> <pre><code>chmod 0700 /home/vagrant/.ssh\nwget --no-check-certificate https://raw.github.com/mitchellh/vagrant/master/keys/vagrant.pub -O /home/vagrant/.ssh/authorized_keys\nchmod 0600 /home/vagrant/.ssh/authorized_keys\nchown -R vagrant /home/vagrant/.ssh\n</code></pre> Configure the OpenSSH Server <p> Edit the <code>/etc/ssh/sshd_config</code> file:</p> <pre><code>sudo vim /etc/ssh/sshd_config\n</code></pre> <p>And uncomment the following line:</p> <pre><code>AuthorizedKeysFile %h/.ssh/authorized_keys\n</code></pre> <p>Then restart SSH.</p> <pre><code>sudo service ssh restart\n</code></pre> Package the box <p> Before you package the box, if you intend to make your box public, it is best to clean your bash history with:</p> <pre><code>history -c\n</code></pre> <p>Exit the SSH connection, and at you're host machine, package the VM:</p> <pre><code>vagrant package --base teraflowsdncontroller --output teraflowsdncontroller.box\n</code></pre> Test run the box <p> Add the base box to you local Vagrant box list:</p> <pre><code>vagrant box add --name teraflowsdncontroller ./teraflowsdncontroller.box\n</code></pre> <p>Now you should try to run it, for that you'll need to create a Vagrantfile. For a simple run, this is the minimal required code for this box:</p> <pre><code># -*- mode: ruby -*-\n# vi: set ft=ruby :\n\nVagrant.configure(\"2\") do |config|\n config.vm.box = \"teraflowsdncontroller\"\n config.vm.box_version = \"1.1.0\"\n config.vm.network :forwarded_port, host: 8080 ,guest: 80\nend\n</code></pre> <p>Now you'll be able to spin up the virtual machine by issuing the command:</p> <pre><code>vagrant up\n</code></pre> <p>And connect to the machine using:</p> <pre><code>vagrant ssh\n</code></pre> Pre-configured boxes <p></p> <p>If you do not wish to create your own Vagrant Box, you can use one of the existing ones created by TFS contributors. - davidjosearaujo/teraflowsdncontroller - ... </p> <p>To use them, you simply have to create a Vagrantfile and run <code>vagrant up controller</code> in the same directory. The following example Vagrantfile already allows you to do just that, with the bonus of exposing the multiple management GUIs to your <code>localhost</code>.</p> <pre><code>Vagrant.configure(\"2\") do |config|\n\n config.vm.define \"controller\" do |controller|\n controller.vm.box = \"davidjosearaujo/teraflowsdncontroller\"\n controller.vm.network \"forwarded_port\", guest: 80, host: 8080 # WebUI\n controller.vm.network \"forwarded_port\", guest: 8084, host: 50750 # Linkerd Viz Dashboard\n controller.vm.network \"forwarded_port\", guest: 8081, host: 8081 # CockroachDB Dashboard\n controller.vm.network \"forwarded_port\", guest: 8222, host: 8222 # NATS Dashboard\n controller.vm.network \"forwarded_port\", guest: 9000, host: 9000 # QuestDB Dashboard\n controller.vm.network \"forwarded_port\", guest: 9090, host: 9090 # Prometheus Dashboard\n\n # Setup Linkerd Viz reverse proxy\n ## Copy config file\n controller.vm.provision \"file\" do |f|\n f.source = \"./reverse-proxy-linkerdviz.sh\"\n f.destination = \"./reverse-proxy-linkerdviz.sh\"\n end\n ## Execute configuration file\n controller.vm.provision \"shell\" do |s|\n s.inline = \"chmod +x ./reverse-proxy-linkerdviz.sh && ./reverse-proxy-linkerdviz.sh\"\n end\n\n # Update controller source code to the desired branch\n if ENV['BRANCH'] != nil\n controller.vm.provision \"shell\" do |s|\n s.inline = \"cd ./tfs-ctrl && git pull && git switch \" + ENV['BRANCH']\n end\n end\n\n end\nend\n</code></pre> <p>This Vagrantfile also allows for optional repository updates on startup by running the command with a specified environment variable <code>BRANCH</code></p> <pre><code>BRANCH=develop vagrant up controller\n</code></pre> Linkerd DNS rebinding bypass <p> Because of Linkerd's security measures against DNS rebinding, a reverse proxy, that modifies the request's header <code>Host</code> field, is needed to expose the GUI to the host. The previous Vagrantfile already deploys such configurations, for that, all you need to do is create the <code>reverse-proxy-linkerdviz.sh</code> file in the same directory. The content of this file is displayed below.</p> <pre><code># Install NGINX\nsudo apt update && sudo apt install nginx -y\n\n# NGINX reverse proxy configuration\necho 'server {\n listen 8084;\n\n location / {\n proxy_pass http://127.0.0.1:50750;\n proxy_set_header Host localhost;\n proxy_set_header X-Real-IP $remote_addr;\n proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n proxy_set_header X-Forwarded-Proto $scheme;\n }\n}' > /home/vagrant/expose-linkerd\n\n# Create symlink of the NGINX configuration file\nsudo ln -s /home/vagrant/expose-linkerd /etc/nginx/sites-enabled/\n\n# Commit the reverse proxy configurations\nsudo systemctl restart nginx\n\n# Enable start on login\necho \"linkerd viz dashboard &\" >> .profile\n\n# Start dashboard\nlinkerd viz dashboard &\n\necho \"Linkerd Viz dashboard running!\"\n</code></pre>","text":""},{"location":"deployment_guide/#12-install-microk8s","title":"1.2. Install MicroK8s","text":"<p>This section describes how to deploy the MicroK8s Kubernetes platform and configure it to be used with ETSI TeraFlowSDN controller. Besides, Docker is installed to build docker images for the ETSI TeraFlowSDN controller.</p> <p>The steps described in this section might take some minutes depending on your internet connection speed and the resources assigned to your VM, or the specifications of your physical server.</p> <p>To facilitate work, these steps are easier to be executed through an SSH connection, for instance using tools like PuTTY or MobaXterm.</p> Upgrade the Ubuntu distribution <p> Skip this step if you already did it during the creation of the VM.</p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> Install prerequisites <p></p> <pre><code>sudo apt-get install -y ca-certificates curl gnupg lsb-release snapd jq\n</code></pre> Install Docker CE <p> Install Docker CE and Docker BuildX plugin</p> <pre><code>sudo apt-get install -y docker.io docker-buildx\n</code></pre> <p>NOTE: Starting from Docker v23, Build architecture has been updated and <code>docker build</code> command entered into deprecation process in favor of the new <code>docker buildx build</code> command. Package <code>docker-buildx</code> provides the new <code>docker buildx build</code> command.</p> <p>Add key \"insecure-registries\" with the private repository to the daemon configuration. It is done in two commands since sometimes read from and write to same file might cause trouble.</p> <pre><code>if [ -s /etc/docker/daemon.json ]; then cat /etc/docker/daemon.json; else echo '{}'; fi \\\n | jq 'if has(\"insecure-registries\") then . else .+ {\"insecure-registries\": []} end' -- \\\n | jq '.\"insecure-registries\" |= (.+ [\"localhost:32000\"] | unique)' -- \\\n | tee tmp.daemon.json\nsudo mv tmp.daemon.json /etc/docker/daemon.json\nsudo chown root:root /etc/docker/daemon.json\nsudo chmod 600 /etc/docker/daemon.json\n</code></pre> <p>Restart the Docker daemon</p> <pre><code>sudo systemctl restart docker\n</code></pre> Install MicroK8s <p></p> <p>Important: By default, Kubernetes uses CIDR 10.1.0.0/16 for pods and CIDR 10.152.183.0/24 for services. If they conflict with your internal network CIDR, you might need to change Kubernetes CIDRs at deployment time. To do so, check links below and ask for support if needed.</p> <ul> <li>MicroK8s - How to configure network Dual-stack</li> <li>MicroK8s - MicroK8s CNI Configuration</li> </ul> <pre><code># Install MicroK8s\nsudo snap install microk8s --classic --channel=1.29/stable\n\n# Create alias for command \"microk8s.kubectl\" to be usable as \"kubectl\"\nsudo snap alias microk8s.kubectl kubectl\n</code></pre> <p>It is important to make sure that <code>ufw</code> will not interfere with the internal pod-to-pod and pod-to-Internet traffic. To do so, first check the status. If <code>ufw</code> is active, use the following command to enable the communication.</p> <pre><code>\n# Verify status of ufw firewall\nsudo ufw status\n\n# If ufw is active, install following rules to enable access pod-to-pod and pod-to-internet\nsudo ufw allow in on cni0 && sudo ufw allow out on cni0\nsudo ufw default allow routed\n</code></pre> <p>NOTE: MicroK8s can be used to compose a Highly Available Kubernetes cluster enabling you to construct an environment combining the CPU, RAM and storage resources of multiple machines. If you are interested in this procedure, review the official instructions in How to build a highly available Kubernetes cluster with MicroK8s, in particular, the step Create a MicroK8s multi-node cluster.</p> <p>References:</p> <ul> <li>The lightweight Kubernetes > Install MicroK8s</li> <li>Install a local Kubernetes with MicroK8s</li> <li>How to build a highly available Kubernetes cluster with MicroK8s</li> <li>MicroK8s - How to configure network Dual-stack</li> <li>MicroK8s - MicroK8s CNI Configuration</li> </ul> Add user to the docker and microk8s groups <p></p> <p>It is important that your user has the permission to run <code>docker</code> and <code>microk8s</code> in the terminal. To allow this, you need to add your user to the <code>docker</code> and <code>microk8s</code> groups with the following commands:</p> <pre><code>sudo usermod -a -G docker $USER\nsudo usermod -a -G microk8s $USER\nsudo chown -f -R $USER $HOME/.kube\nsudo reboot\n</code></pre> <p>In case that you get trouble executing the following commands, might due to the .kube folder is not automatically provisioned into your home folder, you may follow the steps below:</p> <pre><code>mkdir -p $HOME/.kube\nsudo chown -f -R $USER $HOME/.kube\nmicrok8s config > $HOME/.kube/config\nsudo reboot\n</code></pre> Check status of Kubernetes and addons <p> To retrieve the status of Kubernetes once, run the following command:</p> <pre><code>microk8s.status --wait-ready\n</code></pre> <p>To retrieve the status of Kubernetes periodically (e.g., every 1 second), run the following command:</p> <pre><code>watch -n 1 microk8s.status --wait-ready\n</code></pre> Check all resources in Kubernetes <p> To retrieve the status of the Kubernetes resources once, run the following command:</p> <pre><code>kubectl get all --all-namespaces\n</code></pre> <p>To retrieve the status of the Kubernetes resources periodically (e.g., every 1 second), run the following command:</p> <pre><code>watch -n 1 kubectl get all --all-namespaces\n</code></pre> Enable addons <p></p> <p>First, we need to enable the community plugins (maintained by third parties):</p> <pre><code>microk8s.enable community\n</code></pre> <p>The Addons to be enabled are:</p> <ul> <li><code>dns</code>: enables resolving the pods and services by name</li> <li><code>helm3</code>: required to install NATS</li> <li><code>hostpath-storage</code>: enables providing storage for the pods (required by <code>registry</code>)</li> <li><code>ingress</code>: deploys an ingress controller to expose the microservices outside Kubernetes</li> <li><code>registry</code>: deploys a private registry for the TFS controller images</li> <li><code>linkerd</code>: deploys the linkerd service mesh used for load balancing among replicas</li> <li><code>prometheus</code>: set of tools that enable TFS observability through per-component instrumentation</li> <li><code>metrics-server</code>: deploys the Kubernetes metrics server for API access to service metrics</li> </ul> <pre><code>microk8s.enable dns helm3 hostpath-storage ingress registry prometheus metrics-server linkerd\n</code></pre> <p>Important: Enabling some of the addons might take few minutes. Do not proceed with next steps until the addons are ready. Otherwise, the deployment might fail. To confirm everything is up and running:</p> <ol> <li>Periodically Check the status of Kubernetes until you see the addons [dns, ha-cluster, helm3, hostpath-storage, ingress, linkerd, metrics-server, prometheus, registry, storage] in the enabled block.</li> <li>Periodically Check Kubernetes resources until all pods are Ready and Running.</li> <li>If it takes too long for the Pods to be ready, we observed that rebooting the machine may help.</li> </ol> <p>Then, create aliases to make the commands easier to access:</p> <pre><code>sudo snap alias microk8s.helm3 helm3\nsudo snap alias microk8s.linkerd linkerd\n</code></pre> <p>To validate that <code>linkerd</code> is working correctly, run:</p> <pre><code>linkerd check\n</code></pre> <p>To validate that the <code>metrics-server</code> is working correctly, run:</p> <pre><code>kubectl top pods --all-namespaces\n</code></pre> <p>and you should see a screen similar to the <code>top</code> command in Linux, showing the columns namespace, pod name, CPU (cores), and MEMORY (bytes).</p> <p>In case pods are not starting, check information from pods logs. For example, linkerd is sensitive for proper /etc/resolv.conf syntax.</p> <pre><code>kubectl logs <podname> --namespace <namespace>\n</code></pre> <p>If the command shows an error message, also restarting the machine might help.</p> Stop, Restart, and Redeploy <p> Find below some additional commands you might need while you work with MicroK8s:</p> <pre><code>microk8s.stop # stop MicroK8s cluster (for instance, before power off your computer)\nmicrok8s.start # start MicroK8s cluster\nmicrok8s.reset # reset infrastructure to a clean state\n</code></pre> <p>If the following commands does not work to recover the MicroK8s cluster, you can redeploy it.</p> <p>If you want to keep MicroK8s configuration, use:</p> <pre><code>sudo snap remove microk8s\n</code></pre> <p>If you need to completely drop MicroK8s and its complete configuration, use:</p> <pre><code>sudo snap remove microk8s --purge\nsudo apt-get remove --purge docker.io docker-buildx\n</code></pre> <p>IMPORTANT: After uninstalling MicroK8s, it is convenient to reboot the computer (the VM if you work on a VM, or the physical computer if you use a physical computer). Otherwise, there are system configurations that are not correctly cleaned. Especially in what port forwarding and firewall rules matters.</p> <p>After the reboot, redeploy as it is described in this section.</p>"},{"location":"deployment_guide/#13-deploy-teraflowsdn","title":"1.3. Deploy TeraFlowSDN","text":"<p>This section describes how to deploy TeraFlowSDN controller on top of MicroK8s using the environment configured in the previous sections.</p> Install prerequisites <p></p> <pre><code>sudo apt-get install -y git curl jq\n</code></pre> Clone the Git repository of the TeraFlowSDN controller <p> Clone from ETSI-hosted GitLab code repository:</p> <pre><code>mkdir ~/tfs-ctrl\ngit clone https://labs.etsi.org/rep/tfs/controller.git ~/tfs-ctrl\n</code></pre> <p>Important: The original H2020-TeraFlow project hosted on GitLab.com has been archieved and will not receive further contributions/updates. Please, clone from ETSI-hosted GitLab code repository.</p> Checkout the appropriate Git branch <p> TeraFlowSDN controller versions can be found in the appropriate release tags and/or branches as described in Home > Versions.</p> <p>By default the branch master is checked out and points to the latest stable version of the TeraFlowSDN controller, while branch develop contains the latest developments and contributions under test and validation.</p> <p>To switch to the appropriate branch run the following command, changing <code>develop</code> by the name of the branch you want to deploy:</p> <pre><code>cd ~/tfs-ctrl\ngit checkout develop\n</code></pre> Prepare a deployment script with the deployment settings <p> Create a new deployment script, e.g., <code>my_deploy.sh</code>, adding the appropriate settings as follows. This section provides just an overview of the available settings. An example <code>my_deploy.sh</code> script is provided in the root folder of the project for your convenience with full description of all the settings.</p> <p>Note: The example <code>my_deploy.sh</code> script provides reasonable settings for deploying a functional and complete enough TeraFlowSDN controller, and a brief description of their meaning. To see extended descriptions, check scripts in the <code>deploy</code> folder.</p> <pre><code>cd ~/tfs-ctrl\ntee my_deploy.sh >/dev/null << EOF\n# ----- TeraFlowSDN ------------------------------------------------------------\nexport TFS_REGISTRY_IMAGES=\"http://localhost:32000/tfs/\"\nexport TFS_COMPONENTS=\"context device pathcomp service nbi webui\"\nexport TFS_IMAGE_TAG=\"dev\"\nexport TFS_K8S_NAMESPACE=\"tfs\"\nexport TFS_EXTRA_MANIFESTS=\"manifests/nginx_ingress_http.yaml\"\nexport TFS_GRAFANA_PASSWORD=\"admin123+\"\nexport TFS_SKIP_BUILD=\"\"\n\n# ----- CockroachDB ------------------------------------------------------------\nexport CRDB_NAMESPACE=\"crdb\"\nexport CRDB_EXT_PORT_SQL=\"26257\"\nexport CRDB_EXT_PORT_HTTP=\"8081\"\nexport CRDB_USERNAME=\"tfs\"\nexport CRDB_PASSWORD=\"tfs123\"\nexport CRDB_DEPLOY_MODE=\"single\"\nexport CRDB_DROP_DATABASE_IF_EXISTS=\"YES\"\nexport CRDB_REDEPLOY=\"\"\n\n# ----- NATS -------------------------------------------------------------------\nexport NATS_NAMESPACE=\"nats\"\nexport NATS_EXT_PORT_CLIENT=\"4222\"\nexport NATS_EXT_PORT_HTTP=\"8222\"\nexport NATS_REDEPLOY=\"\"\n\n# ----- QuestDB ----------------------------------------------------------------\nexport QDB_NAMESPACE=\"qdb\"\nexport QDB_EXT_PORT_SQL=\"8812\"\nexport QDB_EXT_PORT_ILP=\"9009\"\nexport QDB_EXT_PORT_HTTP=\"9000\"\nexport QDB_USERNAME=\"admin\"\nexport QDB_PASSWORD=\"quest\"\nexport QDB_TABLE_MONITORING_KPIS=\"tfs_monitoring_kpis\"\nexport QDB_TABLE_SLICE_GROUPS=\"tfs_slice_groups\"\nexport QDB_DROP_TABLES_IF_EXIST=\"YES\"\nexport QDB_REDEPLOY=\"\"\n\nEOF\n</code></pre> <p>The settings are organized in 4 sections:</p> <ul> <li>Section <code>TeraFlowSDN</code>:<ul> <li><code>TFS_REGISTRY_IMAGE</code> enables to specify the private Docker registry to be used, by default, we assume to use the Docker respository enabled in MicroK8s.</li> <li><code>TFS_COMPONENTS</code> specifies the components their Docker image will be rebuilt, uploaded to the private Docker registry, and deployed in Kubernetes.</li> <li><code>TFS_IMAGE_TAG</code> defines the tag to be used for Docker images being rebuilt and uploaded to the private Docker registry.</li> <li><code>TFS_K8S_NAMESPACE</code> specifies the name of the Kubernetes namespace to be used for deploying the TFS components.</li> <li><code>TFS_EXTRA_MANIFESTS</code> enables to provide additional manifests to be applied into the Kubernetes environment during the deployment. Typical use case is to deploy ingress controllers, service monitors for Prometheus, etc.</li> <li><code>TFS_GRAFANA_PASSWORD</code> lets you specify the password you want to use for the <code>admin</code> user of the Grafana instance being deployed and linked to the Monitoring component.</li> <li><code>TFS_SKIP_BUILD</code>, if set to <code>YES</code>, prevents rebuilding the Docker images. That means, the deploy script will redeploy existing Docker images without rebuilding/updating them.</li> </ul> </li> <li>Section <code>CockroachDB</code>: enables to configure the deployment of the backend CockroachDB database.<ul> <li>Check example script <code>my_deploy.sh</code> for further details.</li> </ul> </li> <li>Section <code>NATS</code>: enables to configure the deployment of the backend NATS message broker.<ul> <li>Check example script <code>my_deploy.sh</code> for further details.</li> </ul> </li> <li>Section <code>QuestDB</code>: enables to configure the deployment of the backend QuestDB timeseries database.<ul> <li>Check example script <code>my_deploy.sh</code> for further details.</li> </ul> </li> </ul> Confirm that MicroK8s is running <p></p> <p>Run the following command:</p> <pre><code>microk8s status\n</code></pre> <p>If it is reported <code>microk8s is not running, try microk8s start</code>, run the following command to start MicroK8s:</p> <pre><code>microk8s start\n</code></pre> <p>Confirm everything is up and running:</p> <ol> <li>Periodically Check the status of Kubernetes until you see the addons [dns, ha-cluster, helm3, hostpath-storage, ingress, registry, storage] in the enabled block.</li> <li>Periodically Check Kubernetes resources until all pods are Ready and Running.</li> </ol> Deploy TFS controller <p> First, source the deployment settings defined in the previous section. This way, you do not need to specify the environment variables in each and every command you execute to operate the TFS controller. Be aware to re-source the file if you open new terminal sessions. Then, run the following command to deploy TeraFlowSDN controller on top of the MicroK8s Kubernetes platform.</p> <pre><code>cd ~/tfs-ctrl\nsource my_deploy.sh\n./deploy/all.sh\n</code></pre> <p>The script performs the following steps:</p> <ul> <li>Executes script <code>./deploy/crdb.sh</code> to automate deployment of CockroachDB database used by Context component.<ul> <li>The script automatically checks if CockroachDB is already deployed.</li> <li>If there are settings instructing to drop the database and/or redeploy CockroachDB, it does the appropriate actions to honor them as defined in previous section.</li> </ul> </li> <li>Executes script <code>./deploy/nats.sh</code> to automate deployment of NATS message broker used by Context component.<ul> <li>The script automatically checks if NATS is already deployed.</li> <li>If there are settings instructing to redeploy the message broker, it does the appropriate actions to honor them as defined in previous section.</li> </ul> </li> <li>Executes script <code>./deploy/qdb.sh</code> to automate deployment of QuestDB timeseries database used by Monitoring component.<ul> <li>The script automatically checks if QuestDB is already deployed.</li> <li>If there are settings instructing to redeploy the timeseries database, it does the appropriate actions to honor them as defined in previous section.</li> </ul> </li> <li>Executes script <code>./deploy/tfs.sh</code> to automate deployment of TeraFlowSDN.<ul> <li>Creates the namespace defined in <code>TFS_K8S_NAMESPACE</code></li> <li>Creates secrets for CockroachDB, NATS, and QuestDB to be used by Context and Monitoring components.</li> <li>Builds the Docker images for the components defined in <code>TFS_COMPONENTS</code></li> <li>Tags the Docker images with the value of <code>TFS_IMAGE_TAG</code></li> <li>Pushes the Docker images to the repository defined in <code>TFS_REGISTRY_IMAGE</code></li> <li>Deploys the components defined in <code>TFS_COMPONENTS</code></li> <li>Creates the file <code>tfs_runtime_env_vars.sh</code> with the environment variables for the components defined in <code>TFS_COMPONENTS</code> defining their local host addresses and their port numbers.</li> <li>Applies extra manifests defined in <code>TFS_EXTRA_MANIFESTS</code> such as:</li> <li>Creating an ingress controller listening at port 80 for HTTP connections to enable external access to the TeraFlowSDN WebUI, Grafana Dashboards, and Compute NBI interfaces.</li> <li>Deploying service monitors to enable monitoring the performance of the components, device drivers and service handlers.</li> <li>Initialize and configure the Grafana dashboards (if Monitoring component is deployed)</li> </ul> </li> <li>Report a summary of the deployment<ul> <li>See Show Deployment and Logs</li> </ul> </li> </ul>"},{"location":"deployment_guide/#14-webui-and-grafana-dashboards","title":"1.4. WebUI and Grafana Dashboards","text":"<p>This section describes how to get access to the TeraFlowSDN controller WebUI and the monitoring Grafana dashboards.</p> Access the TeraFlowSDN WebUI <p> If you followed the installation steps based on MicroK8s, you got an ingress controller installed that exposes on TCP port 80.</p> <p>Besides, the ingress controller defines the following reverse proxy paths (on your local machine):</p> <ul> <li><code>http://127.0.0.1/webui</code>: points to the WebUI of TeraFlowSDN.</li> <li><code>http://127.0.0.1/grafana</code>: points to the Grafana dashboards. This endpoint brings access to the monitoring dashboards of TeraFlowSDN. The credentials for the <code>admin</code>user are those defined in the <code>my_deploy.sh</code> script, in the <code>TFS_GRAFANA_PASSWORD</code> variable.</li> <li><code>http://127.0.0.1/restconf</code>: points to the Compute component NBI based on RestCONF. This endpoint enables connecting external software, such as ETSI OpenSourceMANO NFV Orchestrator, to TeraFlowSDN.</li> </ul> <p>Note: In the creation of the VM, a forward from host TCP port 8080 to VM's TCP port 80 is configured, so the WebUIs and REST APIs of TeraFlowSDN should be exposed on the endpoint <code>127.0.0.1:8080</code> of your local machine instead of <code>127.0.0.1:80</code>.</p>"},{"location":"deployment_guide/#15-show-deployment-and-logs","title":"1.5. Show Deployment and Logs","text":"<p>This section presents some helper scripts to inspect the status of the deployment and the logs of the components. These scripts are particularly helpful for troubleshooting during execution of experiments, development, and debugging.</p> Report the deployment of the TFS controller <p></p> <p>The summary report given at the end of the Deploy TFS controller procedure can be generated manually at any time by running the following command. You can avoid sourcing <code>my_deploy.sh</code> if it has been already done.</p> <pre><code>cd ~/tfs-ctrl\nsource my_deploy.sh\n./deploy/show.sh\n</code></pre> <p>Use this script to validate that all the pods, deployments, replica sets, ingress controller, etc. are ready and have the appropriate state, e.g., running for Pods, and the services are deployed and have appropriate IP addresses and port numbers.</p> Report the log of a specific TFS controller component <p></p> <p>A number of scripts are pre-created in the <code>scripts</code> folder to facilitate the inspection of the component logs. For instance, to dump the log of the Context component, run the following command. You can avoid sourcing <code>my_deploy.sh</code> if it has been already done.</p> <pre><code>source my_deploy.sh\n./scripts/show_logs_context.sh\n</code></pre>"},{"location":"development_guide/","title":"2. Development Guide","text":""},{"location":"development_guide/#21-configure-environment","title":"2.1. Configure Environment","text":""},{"location":"development_guide/#211-python","title":"2.1.1. PythonUpgrade the Ubuntu distribution <p>Skip this step if you already did it during the installation of your machine.</p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> Install PyEnv dependencies <p></p> <pre><code>sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget \\\n curl llvm git libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev\n</code></pre> Install PyEnv <p></p> <p>We recommend installing PyEnv through PyEnv Installer. Below you can find the instructions, but we refer you to the link for updated instructions.</p> <pre><code>curl https://pyenv.run | bash\n# When finished, edit ~/.bash_profile // ~/.profile // ~/.bashrc as the installer proposes.\n# In general, it means to append the following lines to ~/.bashrc:\nexport PYENV_ROOT=\"$HOME/.pyenv\"\ncommand -v pyenv >/dev/null || export PATH=\"$PYENV_ROOT/bin:$PATH\"\neval \"$(pyenv init -)\"\neval \"$(pyenv virtualenv-init -)\"\n</code></pre> <p>In case .bashrc is not linked properly to your profile, you may need to append the following line into your local .profile file:</p> <pre><code># Open ~/.profile and append this line:\n+source \"$HOME\"/.bashrc\n</code></pre> Restart the machine <p> Restart the machine for all the changes to take effect.</p> <pre><code>sudo reboot\n</code></pre> Install Python 3.9 over PyEnv <p></p> <p>ETSI TeraFlowSDN uses Python 3.9 by default. You should install the latest stable update of Python 3.9, i.e., avoid \"-dev\" versions. To find the latest version available in PyEnv, you can run the following command:</p> <pre><code>pyenv install --list | grep \" 3.9\"\n</code></pre> <p>At the time of writing, this command will output the following list:</p> <pre><code> 3.9.0\n 3.9-dev\n 3.9.1\n 3.9.2\n 3.9.4\n 3.9.5\n 3.9.6\n 3.9.7\n 3.9.8\n 3.9.9\n 3.9.10\n 3.9.11\n 3.9.12\n 3.9.13\n 3.9.14 \n 3.9.15\n 3.9.16 ** always select the latest version **\n</code></pre> <p>Therefore, the latest stable version is Python 3.9.16. To install this version, you should run:</p> <pre><code>pyenv install 3.9.16\n # This command might take some minutes depending on your Internet connection speed \n # and the performance of your machine.\n</code></pre> Create the Virtual Environment for TeraFlowSDN <p> The following commands create a virtual environment named as <code>tfs</code> using Python 3.9 and associate that environment with the current folder, i.e., <code>~/tfs-ctrl</code>. That way, when you are in that folder, the associated virtual environment will be used, thus inheriting the Python interpreter, i.e., Python 3.9, and the Python packages installed on it.</p> <pre><code>cd ~/tfs-ctrl\npyenv virtualenv 3.9.16 tfs\npyenv local 3.9.16/envs/tfs\n</code></pre> <p>After completing these commands, you should see in your prompt that now you're within the virtual environment <code>3.9.16/envs/tfs</code> on folder <code>~/tfs-ctrl</code>:</p> <pre><code>(3.9.16/envs/tfs) tfs@tfs-vm:~/tfs-ctrl$\n</code></pre> <p>In case that the correct pyenv does not get automatically activated when you change to the tfs-ctrl/ folder, then execute the following command:</p> <pre><code>cd ~/tfs-ctrl\npyenv activate 3.9.16/envs/tfs\n</code></pre> Install the basic Python packages within the virtual environment <p> From within the <code>3.9.16/envs/tfs</code> environment on folder <code>~/tfs-ctrl</code>, run the following commands to install the basic Python packages required to work with TeraFlowSDN.</p> <pre><code>cd ~/tfs-ctrl\n./install_requirements.sh\n</code></pre> <p>Some dependencies require to re-load the session, so log-out and log-in again.</p> Generate the Python code from the gRPC Proto messages and services <p></p> <p>The components, e.g., microservices, of the TeraFlowSDN controller, in general, use a gRPC-based open API to interoperate. All the protocol definitions can be found in sub-folder <code>proto</code> within the root project folder. For additional details on gRPC, visit the official web-page gRPC.</p> <p>In order to interact with the components, (re-)generate the Python code from gRPC definitions running the following command:</p> <pre><code>cd ~/tfs-ctrl\nproto/generate_code_python.sh\n</code></pre>","text":"<p>This section describes how to configure the Python environment to run experiments and develop code for the ETSI TeraFlowSDN controller. In particular, we use PyEnv to install the appropriate version of Python and manage the virtual environments.</p>"},{"location":"development_guide/#212-java-quarkus","title":"2.1.2. Java (Quarkus) <p>This section describe the steps needed to create a development environment for TFS components implemented in Java. Currently, ZTP and Policy components have been developed in Java (version 11) and use the Quarkus framework, which enables kubernetes-native development.</p> Install JDK <p> To begin, make sure that you have java installed and in the correct version</p> <pre><code>java --version\n</code></pre> <p>If you don't have java installed you will get an error like the following:</p> <pre><code>Command 'java' not found, but can be installed with:\n\nsudo apt install default-jre # version 2:1.11-72build1, or\nsudo apt install openjdk-11-jre-headless # version 11.0.14+9-0ubuntu2\nsudo apt install openjdk-17-jre-headless # version 17.0.2+8-1\nsudo apt install openjdk-18-jre-headless # version 18~36ea-1\nsudo apt install openjdk-8-jre-headless # version 8u312-b07-0ubuntu1\n</code></pre> <p>In which case you should use the following command to install the correct version:</p> <pre><code>sudo apt install openjdk-11-jre-headless\n</code></pre> <p>Else you should get something like the following:</p> <pre><code>openjdk 11.0.18 2023-01-17\nOpenJDK Runtime Environment (build 11.0.18+10-post-Ubuntu-0ubuntu120.04.1)\nOpenJDK 64-Bit Server VM (build 11.0.18+10-post-Ubuntu-0ubuntu120.04.1, mixed mode, sharing)\n</code></pre> Compiling and testing existing components <p> In the root directory of the existing Java components you will find an executable maven wrapper named <code>mvnw</code>. You could use this executable, which is already configured in pair with the components, instead of your local maven installation. So for example if you want to compile the project you would run the following:</p> <pre><code>./mvnw compile\n</code></pre> VS Code Quarkus plugin <p> In case you are using VS Code for development, we suggest to install the official Quarkus extension. The extension should be able to automatically find the current open project and integrate with the above <code>mvnw</code> maven wrapper, making it easier to control the maven lifecycle. Make sure that you open the specific component directory (i.e., <code>src/ztp</code> or <code>src/policy</code>) and not the general controller one (i.e., <code>src</code>.)</p> New Java TFS component <p></p> <p>Sample Project</p> <p>If you want to create a new TFS component written in Java you could generate a new Quarkus project based on the following project:</p> <p>TFS Sample Quarkus Project</p> <p>In that way, you should have most of the libraries you would need to integrate with the rest of the TFS Components. Feel free however to add or remove libraries depending on your needs.</p> <p>Initial setup</p> <p>If you used the sample project above, you should have a project with a basic structure. However there are some steps that you should take before starting development.</p> <p>First make sure that you copy the protobuff files, that are found in the root directory of the TFS SDN controller, to the <code>new-component/src/main/proto</code> directory.</p> <p>Next you should create the following files:</p> <ul> <li><code>new-component/.gitlab-ci.yml</code></li> <li><code>new-component/Dockerfile</code></li> <li><code>new-component/src/resources/application.yaml</code></li> </ul> <p>We suggest to copy the respective files from existing components (Automation and Policy) and change them according to your needs.</p>","text":""},{"location":"development_guide/#213-java-maven","title":"2.1.3. Java (Maven) <p>Page under construction</p>","text":""},{"location":"development_guide/#214-rust","title":"2.1.4. Rust <p>Page under construction</p>","text":""},{"location":"development_guide/#215-erlang","title":"2.1.5. Erlang <p>This section describes how to configure the Erlang environment to run experiments and develop code for the ETSI TeraFlowSDN controller.</p> <p>First we need to install Erlang. There is multiple way, for development we will be using ASDF, a tool that allows the installation of multiple version of Erlang at the same time, and switch from one version to the other at will.</p> <ul> <li> <p>First, install any missing dependencies: <code>bash sudo apt install curl git autoconf libncurses-dev build-essential m4 libssl-dev</code></p> </li> <li> <p>Download ASDF tool to the local account: <code>bash git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch v0.10.2</code></p> </li> <li> <p>Make ASDF activate on login by adding these lines at the end of the <code>~/.bashrc</code> file: <code>bash . $HOME/.asdf/asdf.sh . $HOME/.asdf/completions/asdf.bash</code></p> </li> <li> <p>Logout and log back in to activate ASDF.</p> </li> </ul> <p>ASDF supports multiple tools by installing there corresponding plugins.</p> <ul> <li> <p>Install ASDF plugin for Erlang: <code>bash asdf plugin add erlang https://github.com/asdf-vm/asdf-erlang.git</code></p> </li> <li> <p>Install a version of Erlang: <code>bash asdf install erlang 24.3.4.2</code></p> </li> <li> <p>Activate Erlang locally for TFS controller. This will create a local file called <code>.tool-versions</code> defining which version of the tools to use when running under the current directory: <code>bash cd tfs-ctrl/ asdf local erlang 24.3.4.2</code></p> </li> </ul> <p>Erlang projects uses a build tool called rebar3. It is used to manager project dependenecies, compile a project and generate project releases.</p> <ul> <li> <p>Install rebar3 localy from source: <code>bash cd ~ git clone https://github.com/erlang/rebar3.git cd rebar3 asdf local erlang 24.3.4.2 ./bootstrap ./rebar3 local install</code></p> </li> <li> <p>Update <code>~/.bashrc</code> to use rebar3 by adding this line at the end: <code>bash export PATH=$HOME/.cache/rebar3/bin:$PATH</code></p> </li> <li> <p>Logout and log back in.</p> </li> </ul>","text":""},{"location":"development_guide/#216-kotlin","title":"2.1.6. Kotlin <p>This section describes the steps needed to establish a development environment for TFS (TeraFlowSDN) components implemented in Kotlin. Currently, the <code>Gateway</code> component stands as the sole component developed in Kotlin.</p> Install Kotlin <p> To begin, make sure that you have kotlin installed and its current version:</p> <pre><code>kotlin -version\n</code></pre> <p>If you don't have kotlin installed you will get an error like the following:</p> <pre><code>Command 'kotlin' not found, but can be installed with:\nsudo snap install --classic kotlin\n</code></pre> <p>In which case you should use the following command to install the correct version:</p> <pre><code> sudo snap install --classic kotlin\n</code></pre> <p>Currently, the recommended version is 1.6.21, which uses Java Runtime Environment (JRE) version 11.</p> Compiling and testing existing components <p> To compile a Kotlin project using Gradle, similarly to using the Maven wrapper (mvnw) for Java projects, you can use the Gradle wrapper (gradlew) within the root directory of your Kotlin component, specifically the gateway directory.</p> <p>Navigate to the gateway directory within your Kotlin project. Ensure that it contains the gradlew script along with the gradle directory. Then, create a directory named <code>proto</code> and move all the files with extension <code>.proto</code> in this way:</p> <pre><code>mkdir proto\ncp ../../../proto/*.proto ./proto \n</code></pre> <p>For building the application, open a terminal or command prompt, navigate to the gateway directory, and run the following command:</p> <pre><code>./gradlew build\n</code></pre> <p>The following program runs the gateway application:</p> <pre><code>./gradlew runServer \n</code></pre> New Kotlin TFS component <p></p> <p>Sample Project</p> <p>If you want to create a new TFS component written in Kotlin you could generate a Kotlin project using <code>gradle</code>. The recommended version is 7.1. Follow the following Gradle guide for its installation. For building the prokect follow this link instead.</p> <p>From inside the new project directory, run the init task using the following command in a terminal: <code>gradle init</code>. </p> <p>The output will look like this:</p> <pre><code>$ gradle init\n\nSelect type of project to generate:\n 1: basic\n 2: application\n 3: library\n 4: Gradle plugin\nEnter selection (default: basic) [1..4] 2\n\nSelect implementation language:\n 1: C++\n 2: Groovy\n 3: Java\n 4: Kotlin\n 5: Scala\n 6: Swift\nEnter selection (default: Java) [1..6] 4\n\nSelect build script DSL:\n 1: Groovy\n 2: Kotlin\nEnter selection (default: Groovy) [1..2] 1\n\nProject name (default: demo):\nSource package (default: demo):\n\n\nBUILD SUCCESSFUL\n2 actionable tasks: 2 executed\n</code></pre> <p>Initial setup</p> <p>The <code>gradle init</code> command generates the new project. </p> <p>First, ensure the protobuf files are copied from the root directory of the TFS SDN controller. Run the following command in the directory of the new project:</p> <pre><code>mkdir proto \ncp TFS/project/root/path/proto/*.proto ./proto/\n</code></pre> <p>The file <code>build.gradle.ktl</code> is fundamental as it manages dependencies. Adjust it for adding external libraries. </p> <p>Next you should create the following files:</p> <ol> <li><code>new-component/.gitlab-ci.yml</code></li> <li><code>new-component/Dockerfile</code></li> </ol> <p>We recommend leveraging the structures and configurations found in the files of existing components for inspiration.</p> <p>Docker Container This project operates with Docker containers. Ensure the production of the container version for your component. To generate the container version of the project, modify the 'new-component/Dockerfile.' Execute the following command from the project's root directory:</p> <pre><code>docker build -t new-image -f new-component/Dockerfile ./\n</code></pre>","text":""},{"location":"development_guide/#22-configure-vscode","title":"2.2. Configure VScode","text":"Install VSCode and the required extensions <p>If not already done, install VSCode and the \"Remote SSH\" extension on your local machine, not in the VM.</p> <p>Note: \"Python\" extension is not required here. It will be installed later on the VSCode server running on the VM.</p> Configure the \"Remote SSH\" extension <p></p> <ul> <li>Go to left icon \"Remote Explorer\"</li> <li>Click the \"gear\" icon next to \"SSH TARGETS\" on top of \"Remote Explorer\" bar</li> <li>Choose to edit \"<...>/.ssh/config\" file (or equivalent)</li> <li>Add the following entry (assuming previous port forwarding configuration):</li> </ul> <pre><code>Host TFS-VM\n HostName 127.0.0.1\n Port 2200\n ForwardX11 no\n User tfs\n</code></pre> <ul> <li>Save the file</li> <li>An entry \"TFS-VM\" should appear on \"SSH TARGETS\".</li> </ul> Connect VSCode to the VM through \"Remote SSH\" extension <p></p> <ul> <li>Right-click on \"TFS-VM\"</li> <li>Select \"Connect to Host in Current Window\"</li> <li>Reply to the questions asked<ul> <li>Platform of the remote host \"TFS-VM\": Linux</li> <li>\"TFS-VM\" has fingerprint \"\". Do you want to continue?: Continue <li>Type tfs user's password: tfs123</li> <li>You should be now connected to the TFS-VM.</li> <p>Note: if you get a connection error message, the reason might be due to wrong SSH server fingerprint. Edit file \"<...>/.ssh/known_hosts\" on your local user account, check if there is a line starting with \"[127.0.0.1]:2200\" (assuming previous port forwarding configuration), remove the entire line, save the file, and retry connection.</p> Add SSH key to prevent typing the password every time <p></p> <p>This step creates an SSH key in the VM and installs it on the VSCode to prevent having to type the password every time.</p> <ul> <li>In VSCode (connected to the VM), click menu \"Terminal > New Terminal\"</li> <li> <p>Run the following commands on the VM's terminal through VSCode <code>bash ssh-keygen -t rsa -b 4096 -f ~/.ssh/tfs-vm.key # leave password empty ssh-copy-id -i ~/.ssh/tfs-vm.key.pub tfs@10.0.2.10 # tfs@10.0.2.10's password: <type tfs user's password: tfs123> rm .ssh/known_hosts</code></p> </li> <li> <p>In VSCode, click left \"Explorer\" panel to expand, if not expanded, and click \"Open Folder\" button.</p> <ul> <li>Choose \"/home/tfs/\"</li> <li>Type tfs user's password when asked</li> <li>Trust authors of the \"/home/tfs [SSH: TFS-VM]\" folder when asked</li> </ul> </li> <li>Right click on the file \"tfs-vm.key\" in the file explorer<ul> <li>Select \"Download...\" option</li> <li>Download the file into your user's accout \".ssh\" folder</li> </ul> </li> <li> <p>Delete files \"tfs-vm.key\" and \"tfs-vm.key.pub\" on the TFS-VM.</p> </li> <li> <p>In VSCode, click left \"Remote Explorer\" panel to expand</p> <ul> <li>Click the \"gear\" icon next to \"SSH TARGETS\" on top of \"Remote Explorer\" bar</li> <li>Choose to edit \"<...>/.ssh/config\" file (or equivalent)</li> <li>Find entry \"Host TFS-VM\" and update it as follows: <code>Host TFS-VM HostName 127.0.0.1 Port 2200 ForwardX11 no User tfs IdentityFile \"<path to the downloaded identity private key file>\"</code></li> <li>Save the file</li> </ul> </li> <li>From now, VSCode will use the identity file to connect to the TFS-VM instead of the user's password.</li> </ul> Install VSCode Python Extension (in VSCode server) <p></p> <p>This step installs Python extensions in VSCode server running in the VM.</p> <ul> <li>In VSCode (connected to the VM), click left button \"Extensions\"</li> <li>Search \"Python\" extension in the extension Marketplace.</li> <li> <p>Install official \"Python\" extension released by Microsoft.</p> <ul> <li>By default, since you're connected to the VM, it will be installed in the VSCode server running in the VM.</li> </ul> </li> <li> <p>In VSCode (connected to the VM), click left button \"Explorer\"</p> </li> <li>Click \"Ctrl+Alt+P\" and type \"Python: Select Interpreter\". Select option \"Python: 3.9.13 64-bit ('tfs')\"</li> </ul> Define environment variables for VSCode <p></p> <p>The source code in the TFS controller project is hosted in folder <code>src/</code>. To help VSCode find the Python modules and packages, add the following file into your working space root folder:</p> <pre><code>echo \"PYTHONPATH=./src\" >> ~/tfs-ctrl/.env\n</code></pre>"},{"location":"development_guide/#23-develop-a-component-wip","title":"2.3. Develop A Component (WIP)","text":"<p>Page under construction</p>"},{"location":"faq/","title":"9. FAQ","text":"<p>This section addresses common questions you may encounter while working with TFS software.</p>"},{"location":"faq/#how-can-i-contribute-to-tfs-documentation","title":"How can I contribute to TFS Documentation?","text":"<p>Please refer to the detailed procedure outlined in our project's README within the GitLab repository. It contains essential instructions and guidelines to assist you.</p> <p>See the README to contribute documentation.</p>"},{"location":"faq/#what-if-i-have-some-issues-while-installingusing-tfs","title":"What if I have some issues while installing/using TFS?","text":"<p>Feel free to join our Slack community channel and ask questions! Our experts will soon reply your question.</p> <p>General Slack Channel </p> <p>For any other bussiness, you can contact the SDG Support team at SDGsupport@etsi.org</p>"},{"location":"features_and_bugs/","title":"4. Feature and bugs","text":"<p>This section describes the procedures to request new features and enhancements, report bugs, and the workflows implemented to manage them.</p> <ul> <li>Feature Request Procedure</li> <li>Bug Report Procedure</li> <li>Feature LifeCycle</li> </ul>"},{"location":"features_and_bugs/#41-feature-request-procedure","title":"4.1. Feature Request Procedure","text":"<p>Project features go through a discussion and approval process. To propose a New Feature, TFS uses the issues on its GitLab code repository.</p> <p>Important: A feature request is about functionality, not about implementation details.</p> <ul> <li>Describe WHAT you are proposing, and WHY it is important.</li> <li>DO NOT describe HOW to do it. This is done when the new feature is approved by TSC by populating the design details.</li> </ul> <p>Two kind of requests are considered in this procedure:</p> <ul> <li>New Feature: a big change that potentially affects a number of components and requires an appropriate design phase.</li> <li>Enhancement: a relatively small change enhancing TFS that does not require a design phase.</li> </ul> Steps: <p></p> <ol> <li> <p>Go to New Issue page <code>https://labs.etsi.org/rep/tfs/controller/-/issues/new</code>.</p> <ul> <li>You need to be authenticated.</li> </ul> </li> <li> <p>Create a New Issue for your feature</p> <ul> <li>Title: A concise high level description of your feature (see some other examples in GitLab)</li> <li>Type: Issue</li> <li>Description: Choose the \"new-feature\" or \"enhancement\" project templates and fill-in the auto-generated template describing the feature/enhancement.</li> <li>Labels:<ul> <li>Select the type of request: <code>type::new-feature</code> / <code>type::enhancement</code></li> <li>If you foresee the components affected by the request, pick the appropriate labels for them.<ul> <li>Component labels have the form <code>comp-<component-name></code>.</li> </ul> </li> <li>PLEASE: Do not set other types of labels (to be set by TSC).</li> </ul> </li> <li>PLEASE: Do not set the following fields (to be set by TSC): EPIC, Assignee, Milestone, Weight, Due Date</li> <li>Submit the Issue</li> </ul> </li> <li> <p>Interact with the TSC and the Community through the issue.</p> <ul> <li>TSC will review your request. If it makes sense and its purpose is clear, it will be approved. Otherwise, TSC will provide questions for clarification.</li> </ul> </li> </ol> Designing a Feature: <p></p> <p>Once a feature has been approved, the design phase starts. The design should be included within the description of the feature (GitLab issue description) by concatenating the Design Feature Template (see below) and properly filling it in. In case the feature description becomes too long, attached files could be included to the feature.</p> <p>The design is expected to be socialized with the relevant stakeholders (e.g. MDLs and TSC). Dedicated slots can be allocated in the TECH calls on a per-request basis to discuss and refine it.</p> <p>For writing the design, you can check the design of existing features or use the design template below.</p> Templates: <p></p> <p>New feature / Enhancement request template:</p> <pre><code># Proposers\n\n- name-of-proposer-1 (institution-of-proposer-1)\n- name-of-proposer-2 (institution-of-proposer-2)\n...\n\n# Description\n\nDescribe your proposal in ~1000 characters.\nYou can reference external content listed in section \"References\" as [Ref-1].\n\n# Demo or definition of done\n\nDescribe which high level conditions needs to be fulfilled to demonstrate this feature implementation is completed.\nYou can reference external content (example, demo paper) listed in section \"References\" as [Ref-2].\n\n# References\n\n1. [Reference name](https://reference-url)\n2. Author1, Author2, Author3, et. al., \u201cMy demo using feature,\u201d in Conference-Name Demo Track, 20XX.\n</code></pre> <p>Feature design Template:</p> <pre><code># Feature Design\n\n## Clarifications to Expected Behavior Changes\n\nExisting component logic and workflows between components that need to be altered to realize this feature.\nRemember to justify these changes.\n...\n\n## References\n\nList of relevant references for this feature.\n...\n\n## Assumptions\n\nEnumerate the assumptions for this feature, e.g., fix XXX is implemented and merged, specific configurations, specific\ncomponents deployed.\n...\n\n## Impacted Components\n\nList of impacted components: Context, Device, Service, PathComp, Slice, Monitoring, Automation, Policy, Compute, etc.\nJust an enumeration, elaboration of impacts is done below.\n\n## Component1 Impact\n\nDescribe impact (changes) on component1.\n...\n\n## Component2 Impact\n\nDescribe impact (changes) on component2.\n...\n\n## Testing\n\nDescribe test sets (unitary and integration) to be carried out.\nThis section can include/reference external experiments, demo papers, etc.\n...\n</code></pre>"},{"location":"features_and_bugs/#42-bug-report-procedure","title":"4.2. Bug Report Procedure","text":"<p>Project bugs go through a review, confirmation, and resolution process. To report a Bug, TFS uses the issues on its GitLab code repository.</p> <p>Important: New bugs must be properly documented. Please, provide details on:</p> <ul> <li>the details on the deployment environment (Operating System, MicroK8s, etc.)</li> <li>the TeraFlowSDN version (or branch/commit)</li> <li>the TFS deployment settings (components, particular configurations, etc.)</li> <li>the particular sequence of actions that resulted in the bug</li> <li>the TFS components affected by the bug (if you know them)</li> <li>the expected behavior (if you know it)</li> </ul> <p>Without this minimal information, it will/might be difficult to reproduce and resolve the bug, as well as validating the completeness of the solution.</p> Steps: <p></p> <ol> <li> <p>Go to New Issue page <code>https://labs.etsi.org/rep/tfs/controller/-/issues/new</code>.</p> <ul> <li>You need to be authenticated.</li> </ul> </li> <li> <p>Create a New Issue for your bug</p> <ul> <li>Title: A concise high level description of your bug (see some other examples in GitLab)</li> <li>Type: Issue</li> <li>Description: Choose the \"bug\" project template and fill-in the auto-generated template describing the bug.</li> <li>Labels:<ul> <li>Select the type of request: <code>type::bug</code></li> <li>If you foresee the components affected by the bug, pick the appropriate labels for them.<ul> <li>Component labels have the form <code>comp-<component-name></code>.</li> </ul> </li> <li>PLEASE: Do not set other types of labels (to be set by TSC).</li> </ul> </li> <li>PLEASE: Do not set the following fields (to be set by TSC): EPIC, Assignee, Milestone, Weight, Due Date</li> <li>Submit the Issue</li> </ul> </li> <li> <p>Interact with the TSC and the Community through the issue.</p> <ul> <li>TSC will review your reported bug and try to reproduce it. If we succeed in reproducing it, we will mark it as confirmed, and include its resolution in the development plans. Otherwise, TSC will provide questions for clarification.</li> </ul> </li> </ol>"},{"location":"features_and_bugs/#43-feature-lifecycle","title":"4.3. Feature LifeCycle","text":"<p>Once approved, a feature request could transition through the following steps:</p> <ul> <li>Approved: Feature approved by TSC; design phase can start.</li> <li>Design: Feature under design; discussing on HOW to do it.</li> <li>Development: Design approved; feature under development/implementation.</li> <li>Testing and Review: Feature implemented and under review and testing by the developers and the community.</li> <li>Completed: Testing and review completed, and feature merged.</li> <li>Abandoned: Feature abandoned.</li> </ul> <p>Important: An approved feature is not a guarantee for implementation. Implementing a feature requires resources, and resources come from the members, participants and individual contributors integrating the TFS Community, which might have prioritized the development of other features based on their own interests and the interests expressed by the LG, the TSC, and the MDGs.</p> <p>Once a Feature is mature, e.g., Testing, Review, Completed, it can be accepted for inclusion in a specific Release. This is accomplished by including the issue ticket in the respective EPIC \"ReleaseX.Y\". For instance, to see the Features included in Release X.Y, check EPIC \"ReleaseX.Y\".</p>"},{"location":"run_experiments/","title":"3. Run Experiments","text":"<p>This section walks you through the process of running experiments in TeraFlowSDN on top of a machine running MicroK8s Kubernetes platform. The guide includes the details on configuring the Python environment, some basic commands you might need, configuring the network topology, and executing different experiments.</p> <p>Note that the steps followed here are likely to work regardless of the platform where TeraFlowSDN is deployed over.</p> <p>Note also that this guide will keep growing with the new experiments and demonstrations that are being carried out involving the ETSI TeraFlowSDN controller.</p> <p>Important: The NBIs, workflows and drivers have to be considered as experimental. The configuration and monitoring capabilities they support are limited, partially implemented, or tested only with specific laboratory equipment. Use them with care.</p> <ul> <li> <p>3.1. OFC'22 Demo</p> <ul> <li>Bootstrapping of devices</li> <li>Monitoring of device endpoints</li> <li>Management of L3VPN services</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> </li> <li> <p>3.2. ECOC'22 Demo</p> <ul> <li>Disjoint DC-2-DC L2VPN Service management</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> </li> <li> <p>3.3. OECC-PSC'22 Demo (Work In Progress)</p> <ul> <li>Interdomain Slices</li> </ul> </li> <li> <p>3.4. NFV-SDN'22 Demo (Work In Progress)</p> <ul> <li>DLT-based context sharing</li> <li>DLT-based Interdomain Slices with SLAs</li> </ul> </li> </ul>"},{"location":"run_experiments/#31-ofc22-demo","title":"3.1. OFC'22 Demo","text":"<p>This functional test reproduces the live demonstration Demonstration of Zero-touch Device and L3-VPN Service Management Using the TeraFlow Cloud-native SDN Controller carried out at OFC'22 / Open access.</p> <p>The main features demonstrated are:</p> <ul> <li>Bootstrapping of devices</li> <li>Monitoring of device endpoints</li> <li>Management of L3VPN services</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> Functional test folder <p></p> <p>This functional test can be found in folder <code>./src/tests/ofc22/</code>.</p> Execute with real devices <p></p> <p>This functional test is designed to operate both with real and emulated devices. By default, emulated devices are used; however, if you have access to real devices, you can create/modify the files <code>./src/tests/ofc22/tests/Objects.py</code> and <code>./src/tests/ofc22/tests/Credentials.py</code> to point to your devices, and map to your own network topology. Otherwise, you can modify the <code>./src/tests/ofc22/tests/descriptors_emulated.json</code> that is designed to be uploaded through the WebUI instead of using the command line scripts. Note that the default scenario assumes devices R2 and R4 are always emulated, while devices R1, R3, and O1 can be configured as emulated or real devices.</p> <p>Important: The device drivers operating with real devices, e.g., OpenConfigDriver, P4Driver, and TransportApiDriver, have to be considered as experimental. The configuration and monitoring capabilities they support are limited or partially implemented/tested. Use them with care.</p> Deployment and Dependencies <p></p> <p>To run this functional test, it is assumed you have deployed a MicroK8s-based Kubernetes environment and a TeraFlowSDN controller instance as described in the Tutorial: Deployment Guide, and you configured the Python environment as described in Tutorial: Development Guide > Configure Environment > Python.</p> Access to the WebUI and Dashboard <p></p> <p>When the deployment completes, you can connect to the TeraFlowSDN WebUI and Dashboards as described in Tutorial: Deployment Guide > WebUI and Grafana Dashboards</p> <p>Notes:</p> <ul> <li>the default credentials for the Grafana Dashboiard is user/pass: <code>admin</code>/<code>admin123+</code>.</li> <li>in Grafana, you will find the L3-Monitorng in the Starred dashboards section.</li> </ul> Test execution <p></p> <p>Before executing the tests, we need to prepare a few things.</p> <p>First, you need to make sure that you have all the gRPC-generate code in your folder. To do so, run:</p> <pre><code>proto/generate_code_python.sh\n</code></pre> <p>Then, it is time to deploy TeraFlowSDN with the correct specification for this scenario. Make sure to load your deployment variables for this scenario by:</p> <pre><code>source src/tests/ofc22/deploy_specs.sh\n</code></pre> <p>Then, you need to deploy the components by running:</p> <pre><code>./deploy/all.sh\n</code></pre> <p>After the deployment is finished, you need to load the environment variables to support the execution of the tests by:</p> <pre><code>source tfs_runtime_env_vars.sh\n</code></pre> <p>To execute this functional test, four main steps needs to be carried out:</p> <ol> <li>Device bootstrapping</li> <li>L3VPN Service creation</li> <li>L3VPN Service removal</li> <li>Cleanup</li> </ol> <p>Upon the execution of each test progresses, a report will be generated indicating PASSED / FAILED / SKIPPED. If there is some error during the execution, you should see a detailed report on the error. See the troubleshooting section if needed.</p> <p>You can check the logs of the different components using the appropriate <code>scripts/show_logs_[component].sh</code> scripts after you execute each step.</p> <p>There are two ways to execute the functional tests, running all the tests with a single script or running each test independently. In the following we start with the first option, then we comment on how to run each test independently.</p> <p>Running all tests with a single script</p> <p>We have a script that executes all the steps at once. It is meant for being used to test if all components involved in this scenario are working correct. To run all the functional tests, you can run:</p> <pre><code>src/tests/ofc22/run_tests.sh\n</code></pre> <p>The following sections explain each one of the steps.</p> <p>Device bootstrapping</p> <p>This step configures some basic entities (Context and Topology), the devices, and the links in the topology. The expected results are:</p> <ul> <li>The devices to be added into the Topology.</li> <li>The devices to be pre-configured and initialized as ENABLED by the Automation component.</li> <li>The monitoring for the device ports (named as endpoints in TeraFlowSDN) to be activated and data collection to automatically start.</li> <li>The links to be added to the topology.</li> </ul> <p>To run this step, you can do it from the WebUI by uploading the file <code>./ofc22/tests/descriptors_emulated.json</code> that contains the descriptors of the contexts, topologies, devices, and links, or by executing the script:</p> <pre><code>./src/tests/ofc22/run_test_01_bootstrap.sh\n</code></pre> <p>When the bootstrapping finishes, check in the Grafana L3-Monitoring Dashboard and you should see the monitoring data being plotted and updated every 5 seconds (by default). Given that there is no service configured, you should see a 0-valued flat plot.</p> <p>In the WebUI, select the admin Context. Then, in the Devices tab you should see that 5 different emulated devices have been created and activated: 4 packet routers, and 1 optical line system controller. Besides, in the Services tab you should see that there is no service created. Note here that the emulated devices produce synthetic randomly-generated monitoring data and do not represent any particular services configured.</p> <p>L3VPN Service creation</p> <p>This step configures a new service emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the script:</p> <pre><code>./src/tests/ofc22/run_test_02_create_service.sh\n</code></pre> <p>When the script finishes, check the WebUI Services tab. You should see that two services have been created, one for the optical layer and another for the packet layer. Besides, you can check the Devices tab to see the configuration rules that have been configured in each device. In the Grafana Dashboard, given that there is now a service configured, you should see the plots with the monitored data for the device. By default, device R1-EMU is selected.</p> <p>L3VPN Service removal</p> <p>This step deconfigures the previously created services emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the script:</p> <pre><code>./src/tests/ofc22/run_test_03_delete_service.sh\n</code></pre> <p>or delete the L3NM service from the WebUI.</p> <p>When the script finishes, check the WebUI Services tab. You should see that the two services have been removed. Besides, in the Devices tab you can see that the appropriate configuration rules have been deconfigured. In the Grafana Dashboard, given that there is no service configured, you should see a 0-valued flat plot again.</p> <p>Cleanup</p> <p>This last step performs a cleanup of the scenario removing all the TeraFlowSDN entities for completeness. To run this step, execute the script:</p> <pre><code>./src/tests/ofc22/run_test_04_cleanup.sh\n</code></pre> <p>When the script finishes, check the WebUI Devices tab, you should see that the devices have been removed. Besides, in the Services tab you can see that the \"admin\" Context has no services given that that context has been removed.</p>"},{"location":"run_experiments/#32-ecoc22-demo","title":"3.2. ECOC'22 Demo","text":"<p>This functional test reproduces the experimental assessment of Experimental Demonstration of Transport Network Slicing with SLA Using the TeraFlowSDN Controller presented at ECOC'22 / IEEEXplore.</p> <p>The main features demonstrated are:</p> <ul> <li>Disjoint DC-2-DC L2VPN Service management</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> Functional test folder <p></p> <p>This functional test can be found in folder <code>./src/tests/ecoc22/</code>.</p> Execute with real devices <p></p> <p>This functional test has only been tested with emulated devices; however, if you have access to real devices, you can modify the files <code>./src/tests/ecoc22/tests/Objects.py</code> and <code>./src/tests/ecoc22/tests/Credentials.py</code> to point to your devices, and map to your network topology. Otherwise, you can modify the <code>./src/tests/ecoc22/tests/descriptors_emulated.json</code> that is designed to be uploaded through the WebUI instead of using the command line scripts.</p> <p>Important: The device drivers operating with real devices, e.g., OpenConfigDriver, P4Driver, and TransportApiDriver, have to be considered as experimental. The configuration and monitoring capabilities they support are limited or partially implemented/tested. Use them with care.</p> Deployment and Dependencies <p></p> <p>To run this functional test, it is assumed you have deployed a MicroK8s-based Kubernetes environment and a TeraFlowSDN controller instance as described in the Tutorial: Deployment Guide, and you configured the Python environment as described in Tutorial: Development Guide > Configure Environment > Python.</p> Access to the WebUI <p></p> <p>When the deployment completes, you can connect to the TeraFlowSDN WebUI as described in Tutorial: Deployment Guide > WebUI and Grafana Dashboards</p> <p>Notes:</p> <ul> <li>this experiment does not make use of Monitoring, so Grafana is not used.</li> <li>the default credentials for the Grafana Dashboard is user/pass: <code>admin</code>/<code>admin123+</code>.</li> <li>this functional test does not involve the Monitoring component, so no monitoring data is plotted in Grafana.</li> </ul> Test execution <p></p> <p>Before executing the tests, we need to prepare a few things.</p> <p>First, you need to make sure that you have all the gRPC-generate code in your folder. To do so, run:</p> <pre><code>proto/generate_code_python.sh\n</code></pre> <p>Second, it is time to deploy TeraFlowSDN with the correct specification for this scenario. Make sure to load your deployment variables for this scenario by:</p> <pre><code>source src/tests/ecoc22/deploy_specs.sh\n</code></pre> <p>Then, you need to deploy the components by running:</p> <pre><code>./deploy/all.sh\n</code></pre> <p>After the deployment is finished, you need to load the environment variables to support the execution of the tests by:</p> <pre><code>source tfs_runtime_env_vars.sh\n</code></pre> <p>To execute this functional test, four main steps needs to be carried out:</p> <ol> <li>Device bootstrapping</li> <li>L2VPN Slice and Services creation</li> <li>L2VPN Slice and Services removal</li> <li>Cleanup</li> </ol> <p>Upon the execution of each test progresses, a report will be generated indicating PASSED / FAILED / SKIPPED. If there is some error during the execution, you should see a detailed report on the error. See the troubleshooting section if needed.</p> <p>You can check the logs of the different components using the appropriate <code>scripts/show_logs_[component].sh</code> scripts after you execute each step.</p> <p>Device bootstrapping</p> <p>This step configures some basic entities (Context and Topology), the devices, and the links in the topology. The expected results are:</p> <ul> <li>The devices to be added into the Topology.</li> <li>The devices to be pre-configured and initialized as ENABLED by the Automation component.</li> <li>The links to be added to the topology.</li> </ul> <p>To run this step, you can do it from the WebUI by uploading the file <code>./src/tests/ecoc22/tests/descriptors_emulated.json</code> that contains the descriptors of the contexts, topologies, devices, and links, or by executing the <code>./src/tests/ecoc22/run_test_01_bootstrap.sh</code> script.</p> <p>In the WebUI, select the admin Context. Then, in the Devices tab you should see that 5 different emulated devices have been created and activated: 4 packet routers, and 1 optical Open Line System (OLS) controller. Besides, in the Services tab you should see that there is no service created. </p> <p>L2VPN Slice and Services creation</p> <p>This step configures a new service emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the <code>./src/tests/ecoc22/run_test_02_create_service.sh</code> script.</p> <p>When the script finishes, check the WebUI Slices and Services tab. You should see that, for the connectivity service requested by MockOSM, one slice has been created, three services have been created (two for the optical layer and another for the packet layer). Note that the two services for the optical layer correspond to the primary (service_uuid ending with \":0\") and the backup (service_uuid ending with \":1\") services. Each of the services indicates the connections and sub-services that are supporting them. Besides, you can check the Devices tab to see the configuration rules that have been configured in each device.</p> <p>L2VPN Slice and Services removal</p> <p>This step deconfigures the previously created slices and services emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the <code>./src/tests/ecoc22/run_test_03_delete_service.sh</code> script, or delete the slice from the WebUI.</p> <p>When the script finishes, check the WebUI Slices and Services tab. You should see that the slice and the services have been removed. Besides, in the Devices tab you can see that the appropriate configuration rules have been deconfigured.</p> <p>Cleanup</p> <p>This last step performs a cleanup of the scenario removing all the TeraFlowSDN entities for completeness.</p> <p>To run this step, execute the <code>./src/tests/ecoc22/run_test_04_cleanup.sh</code> script.</p> <p>When the script finishes, check the WebUI Devices tab, you should see that the devices have been removed. Besides, in the Slices and Services tab you can see that the admin Context has no services given that that context has been removed.</p>"},{"location":"run_experiments/#33-oecc-psc22-demo-work-in-progress","title":"3.3. OECC-PSC'22 Demo (Work In Progress)","text":"<p>Page under construction.</p> <p>The main features demonstrated are:</p> <ul> <li>Interdomain Slices</li> </ul>"},{"location":"run_experiments/#34-nfv-sdn22-demo-work-in-progress","title":"3.4. NFV-SDN'22 Demo (Work In Progress)","text":"<p>Page under construction.</p> <p>The main features demonstrated are:</p> <ul> <li>DLT-based context sharing</li> <li>DLT-based Interdomain Slices with SLAs</li> </ul>"},{"location":"supported_nbis/","title":"6. Supported NBIs","text":"<p>This section summarizes the NBI connectors supported by the TeraFlowSDN controller to interoperate with OSS/BSS/NFVO on top of it.</p> <ul> <li>6.1. TFS API</li> <li>6.2. ETSI Bandwidth Management (BWM)</li> <li>6.3. IETF L2VPN Service Delivery (L2SM) [RFC8466]</li> <li>6.4. IETF L3VPN Service Delivery (L3SM) [RFC8299]</li> <li>6.5. IETF Network Topology [RFC8345]</li> <li>6.6. IETF Network Slice Service [draft-ietf-teas-ietf-network-slice-nbi-yang]</li> </ul>"},{"location":"supported_nbis/#61-tfs-apie","title":"6.1. TFS APIe","text":"<p>This NBI connector exposes the basic gRPC methods of TeraFlowSDN that enable to manage contexts, topologies, devices, links, services, slices, connections, and policies.</p> Exposed endpoints: <p></p> <p>Endpoint <code>/tfs-api/context_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the context identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/contexts</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the details of all contexts</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/dummy_contexts</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to dump contexts (including related topologies, devices, links, services, slices, and connections) in a snapshot format that can be imported directly in TeraFlowSDN WebUI.</li> <li>IMPORTANT: the resulting document is processed by WebUI in dummy mode, i.e., just to populate Context database, but not interacting with Device, Service, and Slice components.</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/topology_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the topology identifiers in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/topologies</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the topology details in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/topology/<path:topology_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific topology in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the service identifiers in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/services</code></p> <ul> <li> <p>Method: <code>GET</code></p> <ul> <li>Used to list all the service details in a context</li> </ul> </li> <li> <p>Method: <code>POST</code></p> <ul> <li>Used to create a service</li> </ul> </li> <li> <p>Method: <code>PUT</code></p> <ul> <li>Used to update a service</li> </ul> </li> <li> <p>Method: <code>DELETE</code></p> <ul> <li>Used to delete a service</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service/<path:service_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific service in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/slice_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the slice identifiers in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/slices</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the slice details in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/slice/<path:slice_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific slice in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/device_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the device identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/devices</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the device details</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/device/<path:device_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific device</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/link_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the link identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/links</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the link details</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/link/<path:link_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific link</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service/<path:service_uuid>/connection_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the connection identifiers related to a service</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service/<path:service_uuid>/connections</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the connection details related to a service</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/connection/<path:connection_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific connection</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/policyrule_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the policy rule identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/policyrules</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the policy rule details</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/policyrule/<path:policyrule_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific policy rule</li> </ul> </li> </ul>"},{"location":"supported_nbis/#62-etsi-bandwidth-management-bwm","title":"6.2. ETSI Bandwidth Management (BWM)","text":"<p>ETSI Traffic Bandwidth Management (BWM) API (GS MEC 015)</p> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L3 connectivity service management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Proprietary Moonlight extension</li> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>ETSI Traffic Bandwidth Management (BWM) API (GS MEC 015)</li> </ul>"},{"location":"supported_nbis/#63-ietf-l2vpn-service-delivery-l2sm-rfc8466","title":"6.3. IETF L2VPN Service Delivery (L2SM) [RFC8466]","text":"<p>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</p> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L2 VPN management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>ETSI OpenSource MANO v12.1+</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</li> </ul>"},{"location":"supported_nbis/#64-ietf-l3vpn-service-delivery-l3sm-rfc8299","title":"6.4. IETF L3VPN Service Delivery (L3SM) [RFC8299]","text":"<p>IETF RFC8299: YANG Data Model for L3VPN Service Delivery</p> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L3 VPN management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Proprietary OSM extensions</li> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8299: YANG Data Model for L3VPN Service Delivery</li> </ul>"},{"location":"supported_nbis/#65-ietf-network-topology-rfc8345","title":"6.5. IETF Network Topology [RFC8345]","text":"<p>IETF RFC8345: A YANG Data Model for Network Topologies</p> <p>Documentation in progress</p> <p>This extension also features partial support for:</p> <ul> <li>IETF RFC 8795: YANG Data Model for Traffic Engineering (TE) Topologies</li> <li>IETF RFC draft-ietf-ccamp-eth-client-te-topo-yang-05: A YANG Data Model for Ethernet TE Topology</li> <li>IETF RFC draft-ietf-ccamp-client-signal-yang-10: A YANG Data Model for Transport Network Client Signals</li> </ul> Supported features: <p></p> <ul> <li>Static topology exposition</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Proprietary OSM extensions</li> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8345: A YANG Data Model for Network Topologies</li> <li>IETF RFC8795: YANG Data Model for Traffic Engineering (TE) Topologies</li> <li>IETF RFC8776: Common YANG Data Types for Traffic Engineering</li> <li>IETF RFC6991: Common YANG Data Types</li> <li>IETF draft-ietf-ccamp-eth-client-te-topo-yang-05: A YANG Data Model for Ethernet TE Topology</li> <li>IETF draft-ietf-ccamp-client-signal-yang-10: A YANG Data Model for Transport Network Client Signals</li> </ul>"},{"location":"supported_nbis/#66-ietf-network-slice-service-draft-ietf-teas-ietf-network-slice-nbi-yang","title":"6.6. IETF Network Slice Service [draft-ietf-teas-ietf-network-slice-nbi-yang]","text":"<p>IETF draft-ietf-teas-ietf-network-slice-nbi-yang: A YANG Data Model for the RFC 9543 Network Slice Service</p> <p>Important: implemented version is based on version 2 of the draft:</p> <ul> <li>draft-ietf-teas-ietf-network-slice-nbi-yang-02: IETF Network Slice Service YANG Model</li> </ul> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L2/L3 slice management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>IETF draft-ietf-teas-ietf-network-slice-nbi-yang-02: IETF Network Slice Service YANG Model</li> </ul>"},{"location":"supported_sbis_and_network_elements/","title":"5. Supported SBIs and Network Elements","text":"<p>This section summarizes the SBI drivers supported by the TeraFlowSDN controller to interoperate with underlying network equipment and intermediate controllers.</p> <ul> <li>5.1. Emulated</li> <li>5.2. NetConf OpenConfig</li> <li>5.3. gNMI OpenConfig</li> <li>5.4. ONF Transport API</li> <li>5.5. P4</li> <li>5.6. Infinera IPM XR</li> <li>5.7. IETF L2VPN</li> <li>5.8. IETF ACTN</li> <li>5.9. NetConf OpenConfig Optical</li> <li>5.10. Optical TFS</li> <li>5.11. MicroWave</li> </ul>"},{"location":"supported_sbis_and_network_elements/#51-emulated","title":"5.1. Emulated","text":"<p>Documentation in progress</p> <p>This driver is provided for testing and debugging purposes. It implements an accept-anything behaviour and maintains an in-memory database with configured rules. It implements support for synthetic telemetry streaming data that is activated/deactivated according to enabled/disabled device endpoints.</p> Device Type: <p></p> <ul> <li>Software Emulated within TeraFlowSDN's Device component.</li> </ul> Supported features: <p></p> <ul> <li>Configuration</li> <li>Monitoring (synthetic)</li> </ul> Tested Devices/Controllers: <p> Not applicable.</p> Reference: <p> None</p>"},{"location":"supported_sbis_and_network_elements/#52-netconf-openconfig","title":"5.2. NetConf OpenConfig","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Packet Router</li> </ul> Supported features: <p></p> <ul> <li>Configuration of interfaces, L2/L3 VPNs, ACLs</li> <li>Monitoring of interfaces through polling</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Infinera DRX-30 with ADVA NOS-OPX-B-21.5.1</li> <li>Edgecore AS7315-30X with ADVA NOS-OPX-B-21.5.1</li> </ul> Reference: <p></p> <ul> <li>IETF RFC6241: Network Configuration Protocol (NETCONF)</li> <li>OpenConfig</li> <li>OpenConfig GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#53-gnmi-openconfig","title":"5.3. gNMI OpenConfig","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Packet Router</li> </ul> Supported features: <p></p> <ul> <li>Configuration of interfaces and IPv4 network instances with static routes</li> <li>Monitoring of interfaces through telemetry streaming</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Nokia SR Linux v23.3.1</li> </ul> Reference: <p></p> <ul> <li>OpenConfig</li> <li>OpenConfig GitHub</li> <li>OpenConfig gNMI</li> <li>OpenConfig gNMI GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#54-onf-transport-api","title":"5.4. ONF Transport API","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configuration of L0 optical links</li> <li>Monitoring is not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>CTTC Open Line System controller</li> </ul> Reference: <p></p> <ul> <li>ONF Transport API</li> <li>ONF Transport API GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#55-p4","title":"5.5. P4","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configuration of L2 packet connections</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>BMV2</li> <li>Intel Tofino P4 switch</li> </ul> Reference: <p></p>"},{"location":"supported_sbis_and_network_elements/#56-infinera-ipm-xr","title":"5.6. Infinera IPM XR","text":"<p>Infinera XR Pluggables through Infinera IPM controller</p> <p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configuration of L0 optical links</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Infinera Pluggable Manager (IPM) controller</li> </ul> Reference: <p></p>"},{"location":"supported_sbis_and_network_elements/#57-ietf-l2vpn","title":"5.7. IETF L2VPN","text":"<p>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</p> <p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Discovery of underlyting topology</li> <li>Configuration of L2 VPNs</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>TeraFlowSDN as child IP controller</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</li> </ul>"},{"location":"supported_sbis_and_network_elements/#58-ietf-actn","title":"5.8. IETF ACTN","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configure OSU Tunnels</li> <li>Configure Ethernet Transport Services</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Huawei NCE-T SDN controller</li> </ul> Reference: <p></p> <ul> <li>IETF draft-ietf-ccamp-client-signal-yang-10: A YANG Data Model for Transport Network Client Signals</li> <li>IETF draft-ietf-teas-yang-te-34: A YANG Data Model for Traffic Engineering Tunnels, Label Switched Paths and Interfaces</li> </ul>"},{"location":"supported_sbis_and_network_elements/#59-netconf-openconfig-optical","title":"5.9. NetConf OpenConfig Optical","text":"<p>NetConf - OpenConfig for Optical Devices (EXPERIMENTAL)</p> <p>WARNING: This driver is experimental and contains proprietary extensions on top of OpenConfig. Use with care.</p> <p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Optical Transponders</li> <li>Multi-granular Optical Nodes</li> </ul> Supported features: <p></p> <ul> <li>Configure L0 optical connections</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Proprietary NetConf/OpenConfig agents</li> </ul> Reference: <p></p> <ul> <li>IETF RFC6241: Network Configuration Protocol (NETCONF)</li> <li>OpenConfig</li> <li>OpenConfig GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#510-optical-tfs","title":"5.10. Optical TFS","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>L0 optical connections</li> <li>Monitoring is not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>TeraFlowSDN as child optical controller</li> </ul> Reference: <p></p>"},{"location":"supported_sbis_and_network_elements/#511-microwave","title":"5.11. MicroWave","text":"<p>Documentation in progress</p> <p>This driver manages microwave radio links through an intermediate controller using the data model in IETF RFC8345 \"A YANG Data Model for Network Topologies\".</p> Device Type: <p></p> <ul> <li>Radio links between routers through an Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>L2 radio links</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>SIAE intermediate MW controller version SM-DC 8.3.2 managing SIAE AGS20 radio terminals</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8345: A YANG Data Model for Network Topologies</li> </ul>"},{"location":"supported_service_handlers/","title":"7. Supported Service Handlers","text":"<p>This section summarizes the service handlers supported by the TeraFlowSDN controller.</p> <ul> <li>7.1. L2NM Emulated</li> <li>7.2. L2NM IETF L2VPN</li> <li>7.3. L2NM NetConf OpenConfig</li> <li>7.4. L2NM P4</li> <li>7.5. L3NM Emulated</li> <li>7.6. L3NM gNMI OpenConfig</li> <li>7.7. L3NM NetConf OpenConfig</li> <li>7.8. L3NM IETF ACTN</li> <li>7.9. End-to-end Orchestrator</li> <li>7.10. Microwave</li> <li>7.11. Optical OpenConfig</li> <li>7.12. Transport API</li> <li>7.13. XR Pluggable</li> </ul>"},{"location":"supported_service_handlers/#71-l2nm-emulated","title":"7.1. L2NM Emulated","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 connectivity services using emulated driver.</p> Suported Drivers: <p></p> <ul> <li>Emulated</li> </ul>"},{"location":"supported_service_handlers/#72-l2nm-ietf-l2vpn","title":"7.2. L2NM IETF L2VPN","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 VPNs using emulated driver.</p> Suported Drivers: <p></p> <ul> <li>Emulated</li> </ul>"},{"location":"supported_service_handlers/#73-l2nm-netconf-openconfig","title":"7.3. L2NM NetConf OpenConfig","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 VPNs using NetConf/OpenConfig for packet routers/switches.</p> Suported Drivers: <p></p> <ul> <li>Packet Routers/Switches with NetConf OpenConfig</li> </ul>"},{"location":"supported_service_handlers/#74-l2nm-p4","title":"7.4. L2NM P4","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 packet forward in P4 switches.</p> Suported Drivers: <p></p> <ul> <li>P4</li> </ul>"},{"location":"supported_service_handlers/#75-l3nm-emulated","title":"7.5. L3NM Emulated","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 connectivity services using emulated driver.</p> Suported Drivers: <p></p> <ul> <li>Emulated</li> </ul>"},{"location":"supported_service_handlers/#76-l3nm-gnmi-openconfig","title":"7.6. L3NM gNMI OpenConfig","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 connectivity services using gNMI/OpenConfig for packet routers.</p> Suported Drivers: <p></p> <ul> <li>Packet Routers with gNMI OpenConfig</li> </ul>"},{"location":"supported_service_handlers/#77-l3nm-netconf-openconfig","title":"7.7. L3NM NetConf OpenConfig","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 VPNs using NetConf/OpenConfig for packet routers.</p> Suported Drivers: <p></p> <ul> <li>Packet Routers with NetConf OpenConfig</li> </ul>"},{"location":"supported_service_handlers/#78-l3nm-ietf-actn","title":"7.8. L3NM IETF ACTN","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 VPNs on top of optical connections using IETF ACTN.</p> Suported Drivers: <p></p> <ul> <li>IETF ACTN</li> </ul>"},{"location":"supported_service_handlers/#79-end-to-end-orchestrator","title":"7.9. End-to-end Orchestrator","text":"<p>Documentation in progress</p> <p>WARNING: Experimental service handler to for a parent TeraFlowSDN end-to-end orchestrator to configure child TeraFlowSDN controllers acting as IP & Optical SDN controllers.</p> Suported Drivers: <p></p> <ul> <li>Optical TFS</li> <li>IETF L2VPN</li> </ul>"},{"location":"supported_service_handlers/#710-microwave","title":"7.10. Microwave","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 microwave links.</p> Suported Drivers: <p></p> <ul> <li>Microwave</li> </ul>"},{"location":"supported_service_handlers/#711-optical-openconfig","title":"7.11. Optical OpenConfig","text":"<p>Documentation in progress</p> <p>WARNING: Experimental service handler to configure L0 optical connections.</p> Suported Drivers: <p></p> <ul> <li>Optical TFS</li> </ul>"},{"location":"supported_service_handlers/#712-transport-api","title":"7.12. Transport API","text":"<p>Documentation in progress</p> <p>Service handler to configure L0 optical connections through intermediate TAPI controller.</p> Suported Drivers: <p></p> <ul> <li>Transport API</li> </ul>"},{"location":"supported_service_handlers/#713-xr-pluggable","title":"7.13. XR Pluggable","text":"<p>Service handler to configure XR pluggables for L0 optical connections through intermediate Infinera IPM controller.</p> Suported Drivers: <p></p> <ul> <li>Infinera IPM XR</li> </ul>"},{"location":"troubleshooting/","title":"8. Troubleshooting","text":"<ul> <li>8.1. Release Disk Space</li> <li>8.2. Activate DEBUG mode for microservices and collect logs</li> <li>8.3. Download a snapshot of the Context database</li> </ul>"},{"location":"troubleshooting/#81-release-disk-space","title":"8.1. Release Disk Space","text":"<p>Page under construction.</p> <p>Clean images when your <code>/var/lib/docker</code> starts taking up too much space:</p> <pre><code>docker system prune -a\n</code></pre>"},{"location":"troubleshooting/#82-activate-debug-mode-for-microservices-and-collect-logs","title":"8.2. Activate DEBUG mode for microservices and collect logs","text":"<p>In some cases might happen that some component is not working or reporting errors. In those cases it makes sense to activate DEBUG mode on those components and collect the logs.</p> Activate DEBUG mode in components <p></p> <p>Before deploying the TeraFlowSDN, in the manifests folder, modify the appropriate files for the microservices to be inspected, e.g. <code>contextservice.yaml</code>, <code>deviceservice.yaml</code>, <code>serviceservice.yaml</code>, <code>pathcompservice.yaml</code>, and <code>nbiservice.yaml</code>, by changing environment variable <code>LOG_LEVEL</code> to <code>DEBUG</code>.</p> <pre><code>apiVersion: apps/v1\nkind: Deployment\n#...\nspec:\n # ...\n template:\n # ...\n spec:\n # ...\n containers:\n # ...\n - name: server\n # ...\n env:\n # ...\n - name: LOG_LEVEL\n value: \"INFO\" # change to \"DEBUG\"F\n # ...\n</code></pre> Redeploy TeraFlowSDN <p></p> <p>Redeploy TeraFlowSDN as usual using the example <code>my_deploy.sh</code> specifications or whatever file you created with your deploy specs.</p> <pre><code>source my_deploy.sh\n./deploy/all.sh\n</code></pre> <p>Wait for the deployment to finish.</p> Use TeraFlowSDN <p></p> <p>Do whatever actions you were testing and were missbehaving, such as onboarding a topology, creating a connectivity service, etc.</p> Collect log files <p></p> <p>A number of helper scripts, named as <code>show_logs_<component>.sh</code>, are provided to facilitate log collection in the scripts folder. These scripts dump, by default, the logs on the screen, but can be redirected to files when needed.</p> <p>In the following example, the logs of <code>context</code>, <code>device</code>, <code>service</code>, <code>pathcomp-frontend</code>, and <code>nbi</code> are stored in respective log files instead of the screen.</p> <pre><code>cd ~/tfs-ctrl\n./scripts/show_logs_context.sh > context.log\n./scripts/show_logs_device.sh > device.log\n./scripts/show_logs_service.sh > service.log\n./scripts/show_logs_pathcomp_frontend.sh > pathcomp_frontend.log\n./scripts/show_logs_nbi.sh > nbi.log\n</code></pre> <p>The resulting logs will be stored in the root TeraFlowSDN folder.</p>"},{"location":"troubleshooting/#83-download-a-snapshot-of-the-context-database","title":"8.3. Download a snapshot of the Context database","text":"<p>In the WebUI, there is a tab named as <code>Debug</code> that you can use to interrogate the Context database. In particular, there is a link named as <code>Dummy Contexts</code>. This link produces a JSON descriptor file containing all the contexts, topologies, devices, links, slices, services, connections, constraints, and configuration rules present in Context. The resulting file can be onboarded in a blank TeraFlowSDN instance for testing purposes.</p> <p>IMPORTANT: The Dummy Contexts feature might take few seconds to respond while it composes the reply.</p> <p>IMPORTANT: The produced file is labelled as <code>\"dummy\": true</code>; that means it is a snapshot of the database that can be loaded directly into Context. This means it does not pass through the Device/Service/Slice components to onboard the records, but it drops the records directly in Context. This is useful to investigate the content on the database when an issue arises.</p> <p>WARNING: The dump retrieves all the information in clear text! Remember to manually anonymize your sensitive data such as credentials, IP addresses, etc.</p>"}]}
\ No newline at end of file
+{"config":{"lang":["en"],"separator":"[\\s\\-]+","pipeline":["stopWordFilter"]},"docs":[{"location":"","title":"0. Home","text":"<p>Welcome to the ETSI TeraFlowSDN (TFS) Controller wiki!</p> <p>This wiki provides a walkthrough on how to prepare your environment for executing and contributing to the ETSI SDG TeraFlowSDN. Besides, it describes how to run some example experiments.</p>"},{"location":"#try-teraflowsdn-release-40","title":"Try TeraFlowSDN Release 4.0","text":"<p>The new release launched on November 5th, 2024 incorporates a number of new features, improvements, and bug resolutions. Try it by following the guides below, and feel free to give us your feedback. See the Release Notes.</p>"},{"location":"#requisites","title":"Requisites","text":"<p>The guides and walkthroughs below make some reasonable assumptions to simplify the deployment of the TFS controller, the execution of experiments and tests, and the development of new contributions. In particular, we assume:</p> <ul> <li>A physical server or virtual machine for running the TFS controller with the following minimum specifications (check section Configure your Machine for additional details):<ul> <li>4 cores / vCPUs</li> <li>8 GB of RAM (10 GB of RAM if you want to develop)</li> <li>60 GB of disk (100 GB of disk if you want to develop)</li> <li>1 NIC card</li> </ul> </li> <li>VSCode with the Remote SSH extension</li> <li>Working machine software:<ul> <li>Ubuntu Server 24.04.1 LTS or Ubuntu Server 22.04.5 LTS or Ubuntu Server 20.04.6 LTS</li> <li>MicroK8s v1.29.10</li> </ul> </li> </ul> <p>Use the Wiki menu in the left side of this page to navigate through the various contents of this wiki.</p>"},{"location":"#guides-and-walkthroughs","title":"Guides and Walkthroughs","text":"<p>The following guides and walkthroughs are provided:</p> <ul> <li>1. Deployment Guide</li> <li>2. Development Guide</li> <li>3. Run Experiments</li> <li>4. Features and Bugs</li> <li>5. Supported SBIs and Network Elements</li> <li>6. Supported NBIs</li> <li>7. Supported Service Handlers</li> <li>8. Troubleshooting</li> </ul>"},{"location":"#tutorials-and-tfs-virtual-machine","title":"Tutorials and TFS Virtual Machine","text":"<p>This section provides access to the links and all the materials prepared for the tutorials and hackfests involving ETSI TeraFlowSDN.</p> <ul> <li> <p>TFS Hackfest #5 (Sophia Antipolis, FR - 12-14 November 2024)</p> <ul> <li>The link includes explanatory material on beginner-friendly comprehensive hands-on tutorial dedicated to exploring the fundamental concepts, protocols, and standards needed to deploy, onboard, control, and monitor network devices like programmable routers and white boxes. This Hackfest provides participants with the opportunity to master the basics of TeraFlowSDN, enhancing their Smart Networks and Services projects through an industry-oriented, cutting-edge network automation framework. In addition, attendees will learn how to engage with the community to contribute code, new features and bug reports.</li> </ul> </li> <li> <p>TFS Hackfest #4 (Athens, 21-22 May 2024)</p> <ul> <li>The link includes explanatory material on BGP-LS Speaker for TeraFlowSDN, how to develop new components, the set of guided walkthrough, and the details on the interactive sessions the participants addressed (and recordings).</li> </ul> </li> <li> <p>TFS Hackfest #3 (Castelldefels, 16-17 October 2023)</p> <ul> <li>The link includes explanatory material on P4 for TeraFlowSDN, the set of guided walkthrough, and the details on the interactive sessions the participants addressed (and recordings), as well as a TFS Virtual Machine (Release 2.1).</li> </ul> </li> <li> <p>TFS Hackfest #2 (Madrid, 20-21 June 2023)</p> <ul> <li>The link includes explanatory material on gNMI and ContainerLab for TeraFlowSDN, the set of challenges the participants addressed (and recordings), as well as a TFS Virtual Machine (Pre-Release 2.1).</li> </ul> </li> <li> <p>OFC SC472 (San Diego, 6 March 2023)</p> <ul> <li>The link includes a tutorial-style slide deck, as well as a TFS Virtual Machine (Release 2).</li> </ul> </li> <li> <p>TFS Hackfest #1 (Amsterdam, 20 October 2022)</p> <ul> <li>The link includes a tutorial-style slide deck (and recordings), as well as a TFS Virtual Machine (Pre-Release 2).</li> </ul> </li> </ul>"},{"location":"#versions","title":"Versions","text":"<p>New versions of TeraFlowSDN are periodically released. Each release is properly tagged and a branch is kept for its future bug fixing, if needed.</p> <ul> <li>The branch master, points always to the latest stable version of the TeraFlowSDN controller.</li> <li>The branches release/X.Y.Z, point to the code for the different release versions indicated in branch name.<ul> <li>Code in these branches can be considered stable, and no new features are planned.</li> <li>In case of bugs, point releases increasing revision number (Z) might be created.</li> </ul> </li> <li>The main development branch is named as develop.<ul> <li>Use with care! Might not be stable.</li> <li>The latest developments and contributions are added to this branch for testing and validation before reaching a release. </li> </ul> </li> </ul> <p>To choose the appropriate branch, follow the steps described in 1.3. Deploy TeraFlowSDN > Checkout the Appropriate Git Branch</p>"},{"location":"#events","title":"Events","text":"<p>Find here after the list of past and future TFS Events:</p> <ul> <li>ETSI TeraFlowSDN Events </li> </ul>"},{"location":"#contact","title":"Contact","text":"<p>If your environment does not fit with the proposed assumptions and you experience issues preparing it to work with the ETSI TeraFlowSDN controller, contact the ETSI TeraFlowSDN SDG team through Slack</p>"},{"location":"deployment_guide/","title":"1. Deployment Guide","text":"<p>This section walks you through the process of deploying TeraFlowSDN on top of a machine running MicroK8s Kubernetes platform. The guide includes the details on configuring and installing the machine, installing and configuring MicroK8s, and deploying and reporting the status of the TeraFlowSDN controller.</p>"},{"location":"deployment_guide/#11-configure-your-machine","title":"1.1. Configure your Machine","text":"<p>In this section, we describe how to configure a machine (physical or virtual) to be used as the deployment, execution, and development environment for the ETSI TeraFlowSDN controller. Choose your preferred environment below and follow the instructions provided.</p> <p>NOTE: If you already have a remote physical server fitting the requirements specified in this section feel free to use it instead of deploying a local VM. Check 1.1.1. Physical Server for further details.</p> <p>Virtualization platforms tested are:</p> <ul> <li>Physical Server</li> <li>Oracle Virtual Box</li> <li>VMWare Fusion</li> <li>OpenStack</li> <li>Vagrant Box</li> </ul>"},{"location":"deployment_guide/#111-physical-server","title":"1.1.1. Physical ServerServer SpecificationsClusterized DeploymentNetworkingOperating SystemUpgrade the Ubuntu distribution","text":"<p>This section describes how to configure a physical server for running ETSI TeraFlowSDN(TFS) controller.</p> <p>Minimum Server Specifications for development and basic deployment</p> <ul> <li>CPU: 4 cores</li> <li>RAM: 8 GB</li> <li>Disk: 60 GB</li> <li>1 GbE NIC</li> </ul> <p>Recommended Server Specifications for development and basic deployment</p> <ul> <li>CPU: 6 cores</li> <li>RAM: 12 GB</li> <li>Disk: 80 GB</li> <li>1 GbE NIC</li> </ul> <p>Server Specifications for best development and deployment experience</p> <ul> <li>CPU: 8 cores</li> <li>RAM: 32 GB</li> <li>Disk: 120 GB</li> <li>1 GbE NIC</li> </ul> <p>NOTE: the specifications listed above are provided as a reference. They depend also on the CPU clock frequency, the RAM memory, the disk technology and speed, etc.</p> <p>For development purposes, it is recommended to run the VSCode IDE (or the IDE of your choice) in a more powerful server, for instance, the recommended server specifications for development and basic deployment.</p> <p>Given that TeraFlowSDN follows a micro-services architecture, for the deployment, it might be better to use many clusterized servers with many slower cores than a single server with few highly performant cores.</p> <p>You might consider creating a cluster of machines each featuring, at least, the minimum server specifications. That solution brings you scalability in the future.</p> <p>No explicit indications are given in terms of networking besides that servers need access to the Internet for downloading dependencies, binaries, and packages while building and deploying the TeraFlowSDN components.</p> <p>Besides that, the network requirements are essentially the same than that required for running a classical Kubernetes environment. To facilitate the deployment, we extensively use MicroK8s, thus the network requirements are, essentially, the same demanded by MicroK8s, especially, if you consider creating a Kubernetes cluster.</p> <p>As a reference, the other deployment solutions based on VMs assume the VM is connected to a virtual network configured with the IP range <code>10.0.2.0/24</code> and have the gateway at IP <code>10.0.2.1</code>. The VMs have the IP address <code>10.0.2.10</code>.</p> <p>The minimum required ports to be accessible are:</p> <ul> <li>22/SSH : for management purposes</li> <li>80/HTTP : for the TeraFlowSDN WebUI and Grafana dashboard</li> <li>8081/HTTPS : for the CockroachDB WebUI</li> </ul> <p>Other ports might be required if you consider to deploy addons such as Kubernetes observability, etc. The details on these ports are left appart given they might vary depending on the Kubernetes environment you use.</p> <p>The recommended Operating System for deploying TeraFlowSDN is Ubuntu Server 24.04 LTS or Ubuntu Server 22.04 LTS or Ubuntu Server 20.04 LTS. Other version might work, but we have not tested them. We strongly recommend using Long Term Support (LTS) versions as they provide better stability.</p> <p>Below we provide some installation guidelines:</p> <ul> <li>Installation Language: English</li> <li>Autodetect your keyboard</li> <li>If asked, select \"Ubuntu Server\" (do not select \"Ubuntu Server (minimized)\").</li> <li>Configure static network specifications (adapt them based on your particular setup):</li> </ul> Interface IPv4 Method Subnet Address Gateway Name servers Search domains enp0s3 Manual 10.0.2.0/24 10.0.2.10 10.0.2.1 8.8.8.8,8.8.4.4 <ul> <li>Leave proxy and mirror addresses as they are</li> <li>Let the installer self-upgrade (if asked).</li> <li>Use an entire disk for the installation<ul> <li>Disable setup of the disk as LVM group</li> <li>Double check that NO swap space is allocated in the partition table. Kubernetes does not work properly with SWAP.</li> </ul> </li> <li>Configure your user and system names:<ul> <li>User name: <code>TeraFlowSDN</code></li> <li>Server's name: <code>tfs-vm</code></li> <li>Username: <code>tfs</code></li> <li>Password: <code>tfs123</code></li> </ul> </li> <li>Install Open SSH Server<ul> <li>Import SSH keys, if any.</li> </ul> </li> <li>Featured Server Snaps<ul> <li>Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall them in case of trouble with.</li> </ul> </li> <li>Let the system install and upgrade the packages.<ul> <li>This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your Internet connection speed.</li> </ul> </li> <li>Restart the VM when the installation is completed.</li> </ul> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul>"},{"location":"deployment_guide/#112-oracle-virtual-box","title":"1.1.2. Oracle Virtual BoxCreate a NAT Network in VirtualBoxCreate VM in VirtualBox:Install Ubuntu 22.04 LTS Operating System","text":"<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using Oracle VirtualBox. It has been tested with VirtualBox up to version 6.1.40 r154048.</p> <p>In \"Oracle VM VirtualBox Manager\", Menu \"File > Preferences... > Network\", create a NAT network with the following specifications:</p> Name CIDR DHCP IPv6 TFS-NAT-Net 10.0.2.0/24 Disabled Disabled <p>Within the newly created \"TFS-NAT-Net\" NAT network, configure the following IPv4 forwarding rules:</p> Name Protocol Host IP Host Port Guest IP Guest Port SSH TCP 127.0.0.1 2200 10.0.2.10 22 HTTP TCP 127.0.0.1 8080 10.0.2.10 80 <p>Note: IP address 10.0.2.10 is the one that will be assigned to the VM.</p> <ul> <li>Name: TFS-VM</li> <li>Type/Version: Linux / Ubuntu (64-bit)</li> <li>CPU (*): 4 vCPUs @ 100% execution capacity</li> <li>RAM: 8 GB</li> <li>Disk: 60 GB, Virtual Disk Image (VDI), Dynamically allocated</li> <li>Optical Drive ISO Image: \"ubuntu-22.04.X-live-server-amd64.iso\"<ul> <li>Download the latest Long Term Support (LTS) version of the Ubuntu Server image from Ubuntu 22.04 LTS, e.g., \"ubuntu-22.04.X-live-server-amd64.iso\".</li> <li>Note: use Ubuntu Server image instead of Ubuntu Desktop to create a lightweight VM.</li> </ul> </li> <li>Network Adapter 1 (*): enabled, attached to NAT Network \"TFS-NAT-Net\"</li> <li>Minor adjustments (*):<ul> <li>Audio: disabled</li> <li>Boot order: disable \"Floppy\"</li> </ul> </li> </ul> <p>Note: (*) settings to be editing after the VM is created.</p> <p>In \"Oracle VM VirtualBox Manager\", start the VM in normal mode, and follow the installation procedure.</p> <p>Below we provide some installation guidelines:</p> <ul> <li>Installation Language: English</li> <li>Autodetect your keyboard</li> <li>If asked, select \"Ubuntu Server\" (do not select \"Ubuntu Server (minimized)\").</li> <li>Configure static network specifications:</li> </ul> Interface IPv4 Method Subnet Address Gateway Name servers Search domains enp0s3 Manual 10.0.2.0/24 10.0.2.10 10.0.2.1 8.8.8.8,8.8.4.4 <ul> <li>Leave proxy and mirror addresses as they are</li> <li>Let the installer self-upgrade (if asked).</li> <li>Use an entire disk for the installation<ul> <li>Disable setup of the disk as LVM group</li> <li>Double check that NO swap space is allocated in the partition table. Kubernetes does not work properly with SWAP.</li> </ul> </li> <li>Configure your user and system names:<ul> <li>User name: TeraFlowSDN</li> <li>Server's name: tfs-vm</li> <li>Username: tfs</li> <li>Password: tfs123</li> </ul> </li> <li>Install Open SSH Server<ul> <li>Import SSH keys, if any.</li> </ul> </li> <li>Featured Server Snaps<ul> <li>Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall them in case of trouble with.</li> </ul> </li> <li>Let the system install and upgrade the packages.<ul> <li>This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your Internet connection speed.</li> </ul> </li> <li>Restart the VM when the installation is completed.</li> </ul> <p>Upgrade the Ubuntu distribution</p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul> <p>Install VirtualBox Guest Additions</p> <p>On VirtualBox Manager, open the VM main screen. If you are running the VM in headless mode, right click over the VM in the VirtualBox Manager window and click \"Show\". If a dialog informing about how to leave the interface of the VM is shown, confirm pressing \"Switch\" button. The interface of the VM should appear.</p> <p>Click menu \"Device > Insert Guest Additions CD image...\"</p> <p>On the VM terminal, type:</p> <pre><code>sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms\n # This command might take some minutes depending on your VM specs and your Internet access speed.\nsudo mount /dev/cdrom /mnt/\ncd /mnt/\nsudo ./VBoxLinuxAdditions.run\n # This command might take some minutes depending on your VM specs.\nsudo reboot\n</code></pre>"},{"location":"deployment_guide/#113-vmware-fusion","title":"1.1.3. VMWare FusionCreate VM in VMWare Fusion:Install Ubuntu 22.04.1 LTS Operating SystemUpgrade the Ubuntu distribution","text":"<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using VMWare Fusion. It has been tested with VMWare Fusion version 12 and 13.</p> <p>In \"VMWare Fusion\" manager, create a new network from the \"Settings/Network\" menu.</p> <ul> <li>Unlock to make changes</li> <li>Press the + icon and create a new network</li> <li>Change the name to TFS-NAT-Net</li> <li>Check \"Allow virtual machines on this network to connect to external network (NAT)\"</li> <li>Do not check \"Enable IPv6\"</li> <li>Add port forwarding for HTTP and SSH</li> <li>Uncheck \"Provide address on this network via DHCP\"</li> </ul> <p>Create a new VM an Ubuntu 22.04.1 ISO:</p> <ul> <li>Display Name: TeraFlowSDN</li> <li>Username: tfs</li> <li>Password: tfs123</li> </ul> <p>On the next screen press \"Customize Settings\", save the VM and in \"Settings\" change:</p> <ul> <li>Change to use 4 CPUs</li> <li>Change to access 8 GB of RAM</li> <li>Change disk to size 60 GB</li> <li>Change the network interface to use the previously created TFS-NAT-Net</li> </ul> <p>Run the VM to start the installation.</p> <p>The installation will be automatic, without any configuration required.</p> <ul> <li> <p>Configure the guest IP, gateway and DNS:</p> <p>Using the Network Settings for the wired connection, set the IP to 10.0.2.10, the mask to 255.255.255.0, the gateway to 10.0.2.2 and the DNS to 10.0.2.2.</p> </li> <li> <p>Disable and remove swap file:</p> <p>$ sudo swapoff -a $ sudo rm /swapfile</p> <p>Then you can remove or comment the /swapfile entry in /etc/fstab</p> </li> <li> <p>Install Open SSH Server</p> <ul> <li>Import SSH keys, if any.</li> </ul> </li> <li> <p>Restart the VM when the installation is completed.</p> </li> </ul> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre>"},{"location":"deployment_guide/#114-openstack","title":"1.1.4. OpenStackCreate a Security Group in OpenStack <p> In OpenStack, go to Project - Network - Security Groups - Create Security Group with name TFS</p> <p>Add the following rules:</p> Direction Ether Type IP Protocol Port Range Remote IP Prefix Ingress IPv4 TCP 22 (SSH) 0.0.0.0/0 Ingress IPv4 TCP 2200 0.0.0.0/0 Ingress IPv4 TCP 8080 0.0.0.0/0 Ingress IPv4 TCP 80 0.0.0.0/0 Egress IPv4 Any Any 0.0.0.0/0 Egress IPv6 Any Any ::/0 <p>Note: The IP address will be assigned depending on the network you have configured inside OpenStack. This IP will have to be modified in TeraFlow configuration files which by default use IP 10.0.2.10</p> Create a flavour <p></p> <p>From dashboard (Horizon)</p> <p>Go to Admin - Compute - Flavors and press Create Flavor</p> <ul> <li>Name: TFS</li> <li>VCPUs: 4</li> <li>RAM (MB): 8192</li> <li>Root Disk (GB): 60</li> </ul> <p>From CLI</p> <pre><code> openstack flavor create TFS --id auto --ram 8192 --disk 60 --vcpus 8\n</code></pre> Create an instance in OpenStack: <p></p> <ul> <li>Instance name: TFS-VM</li> <li>Origin: [Ubuntu-22.04 cloud image] (https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img)</li> <li>Create new volume: No</li> <li>Flavor: TFS</li> <li>Networks: extnet </li> <li>Security Groups: TFS</li> <li>Configuration: Include the following cloud-config</li> </ul> <pre><code>#cloud-config\n# Modifies the password for the VM instance\nusername: ubuntu\npassword: <your-password>\nchpasswd: { expire: False }\nssh_pwauth: True\n</code></pre> Upgrade the Ubuntu distribution <p></p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul>","text":"<p>This section describes how to configure a VM for running ETSI TeraFlowSDN(TFS) controller using OpenStack. It has been tested with OpenStack Kolla up to Yoga version. </p>"},{"location":"deployment_guide/#115-vagrant-box","title":"1.1.5. Vagrant Box <p>This section describes how to create a Vagrant Box, using the base virtual machine configured in Oracle Virtual Box.</p> Virtual Machine specifications <p></p> <p>Most of the specifications can be as specified in the Oracle Virtual Box page, however, there are a few particularities to Vagrant that must be accommodated, such as:</p> <ul> <li>Virtual Hard Disk<ul> <li>Size: 60GB (at least)</li> <li>Type: VMDK</li> </ul> </li> </ul> <p></p> <p>Also, before initiating the VM and installing the OS, we'll need to:</p> <ul> <li>Disable Floppy in the 'Boot Order'</li> <li>Disable audio</li> <li>Disable USB</li> <li>Ensure Network Adapter 1 is set to NAT</li> </ul> Network configurations <p></p> <p>At Network Adapt 1, the following port-forwarding rule must be set.</p> Name Protocol Host IP Host Port Guest IP Guest Port SSH TCP 2222 22 <p></p> Installing the OS <p></p> <p>For a Vagrant Box, it is generally suggested that the ISO's server version is used, as it is intended to be used via SSH, and any web GUI is expected to be forwarded to the host.</p> <p></p> <p></p> <p></p> <p>Make sure the disk is not configured as an LVM group!</p> <p></p> Vagrant ser <p></p> <p>Vagrant expects by default, that in the box's OS exists the user <code>vagrant</code> with the password also being <code>vagrant</code>.</p> <p></p> SSH <p></p> <p>Vagrant uses SSH to connect to the boxes, so installing it now will save the hassle of doing it later.</p> <p></p> Features server snaps <p></p> <p>Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall them in case of trouble with.</p> Updates <p></p> <p>Let the system install and upgrade the packages. This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your Internet connection speed.</p> Upgrade the Ubuntu distribution <p></p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> <ul> <li>If asked to restart services, restart the default ones proposed.</li> <li>Restart the VM when the installation is completed.</li> </ul> Install VirtualBox Guest Additions <p></p> <p>On VirtualBox Manager, open the VM main screen. If you are running the VM in headless mode, right-click over the VM in the VirtualBox Manager window, and click \"Show\". If a dialog informing about how to leave the interface of the VM is shown, confirm by pressing the \"Switch\" button. The interface of the VM should appear.</p> <p>Click the menu \"Device > Insert Guest Additions CD image...\"</p> <p>On the VM terminal, type:</p> <pre><code>sudo apt-get install -y linux-headers-$(uname -r) build-essential dkms\n # This command might take some minutes depending on your VM specs and your Internet access speed.\nsudo mount /dev/cdrom /mnt/\ncd /mnt/\nsudo ./VBoxLinuxAdditions.run\n # This command might take some minutes depending on your VM specs.\nsudo reboot\n</code></pre> ETSI TFS Installation <p></p> <p>After this, proceed to 1.2. Install Microk8s, after which, return to this wiki to finish the Vagrant Box creation.</p> Box configuration and creation <p></p> <p>Make sure the ETSI TFS controller is correctly configured. You will not be able to change it after!</p> <p>It is advisable to do the next configurations from a host's terminal, via a SSH connection.</p> <pre><code>ssh -p 2222 vagrant@127.0.0.1\n</code></pre> Set root password <p></p> <p>Set the root password to <code>vagrant</code>:</p> <pre><code>sudo passwd root\n</code></pre> Set the superuser <p></p> <p>Set up the Vagrant user so that it\u2019s able to use sudo without being prompted for a password.</p> <p>Anything in the <code>/etc/sudoers.d/*</code> directory is included in the sudoers privileges when created by the root user. Create a new sudo file.</p> <pre><code>sudo visudo -f /etc/sudoers.d/vagrant\n</code></pre> <p>and add the following lines</p> <pre><code># add vagrant user\nvagrant ALL=(ALL) NOPASSWD:ALL\n</code></pre> <p>You can now test that it works by running a simple command.</p> <pre><code>sudo pwd\n</code></pre> <p>Issuing this command should result in an immediate response without a request for a password.</p> Install the Vagrant key <p></p> <p>Vagrant uses a default set of SSH keys for you to directly connect to boxes via the CLI command <code>vagrant ssh</code>, after which it creates a new set of SSH keys for your new box. Because of this, we need to load the default key to be able to access the box after created.</p> <pre><code>chmod 0700 /home/vagrant/.ssh\nwget --no-check-certificate https://raw.github.com/mitchellh/vagrant/master/keys/vagrant.pub -O /home/vagrant/.ssh/authorized_keys\nchmod 0600 /home/vagrant/.ssh/authorized_keys\nchown -R vagrant /home/vagrant/.ssh\n</code></pre> Configure the OpenSSH Server <p></p> <p>Edit the <code>/etc/ssh/sshd_config</code> file:</p> <pre><code>sudo vim /etc/ssh/sshd_config\n</code></pre> <p>And uncomment the following line:</p> <pre><code>AuthorizedKeysFile %h/.ssh/authorized_keys\n</code></pre> <p>Then restart SSH.</p> <pre><code>sudo service ssh restart\n</code></pre> Package the box <p></p> <p>Before you package the box, if you intend to make your box public, it is best to clean your bash history with:</p> <pre><code>history -c\n</code></pre> <p>Exit the SSH connection, and at you're host machine, package the VM:</p> <pre><code>vagrant package --base teraflowsdncontroller --output teraflowsdncontroller.box\n</code></pre> Test run the box <p></p> <p>Add the base box to you local Vagrant box list:</p> <pre><code>vagrant box add --name teraflowsdncontroller ./teraflowsdncontroller.box\n</code></pre> <p>Now you should try to run it, for that you'll need to create a Vagrantfile. For a simple run, this is the minimal required code for this box:</p> <pre><code># -*- mode: ruby -*-\n# vi: set ft=ruby :\n\nVagrant.configure(\"2\") do |config|\n config.vm.box = \"teraflowsdncontroller\"\n config.vm.box_version = \"1.1.0\"\n config.vm.network :forwarded_port, host: 8080 ,guest: 80\nend\n</code></pre> <p>Now you'll be able to spin up the virtual machine by issuing the command:</p> <pre><code>vagrant up\n</code></pre> <p>And connect to the machine using:</p> <pre><code>vagrant ssh\n</code></pre> Pre-configured boxes <p></p> <p>If you do not wish to create your own Vagrant Box, you can use one of the existing ones created by TFS contributors. - davidjosearaujo/teraflowsdncontroller - ... </p> <p>To use them, you simply have to create a Vagrantfile and run <code>vagrant up controller</code> in the same directory. The following example Vagrantfile already allows you to do just that, with the bonus of exposing the multiple management GUIs to your <code>localhost</code>.</p> <pre><code>Vagrant.configure(\"2\") do |config|\n\n config.vm.define \"controller\" do |controller|\n controller.vm.box = \"davidjosearaujo/teraflowsdncontroller\"\n controller.vm.network \"forwarded_port\", guest: 80, host: 8080 # WebUI\n controller.vm.network \"forwarded_port\", guest: 8084, host: 50750 # Linkerd Viz Dashboard\n controller.vm.network \"forwarded_port\", guest: 8081, host: 8081 # CockroachDB Dashboard\n controller.vm.network \"forwarded_port\", guest: 8222, host: 8222 # NATS Dashboard\n controller.vm.network \"forwarded_port\", guest: 9000, host: 9000 # QuestDB Dashboard\n controller.vm.network \"forwarded_port\", guest: 9090, host: 9090 # Prometheus Dashboard\n\n # Setup Linkerd Viz reverse proxy\n ## Copy config file\n controller.vm.provision \"file\" do |f|\n f.source = \"./reverse-proxy-linkerdviz.sh\"\n f.destination = \"./reverse-proxy-linkerdviz.sh\"\n end\n ## Execute configuration file\n controller.vm.provision \"shell\" do |s|\n s.inline = \"chmod +x ./reverse-proxy-linkerdviz.sh && ./reverse-proxy-linkerdviz.sh\"\n end\n\n # Update controller source code to the desired branch\n if ENV['BRANCH'] != nil\n controller.vm.provision \"shell\" do |s|\n s.inline = \"cd ./tfs-ctrl && git pull && git switch \" + ENV['BRANCH']\n end\n end\n\n end\nend\n</code></pre> <p>This Vagrantfile also allows for optional repository updates on startup by running the command with a specified environment variable <code>BRANCH</code></p> <pre><code>BRANCH=develop vagrant up controller\n</code></pre> Linkerd DNS rebinding bypass <p></p> <p>Because of Linkerd's security measures against DNS rebinding, a reverse proxy, that modifies the request's header <code>Host</code> field, is needed to expose the GUI to the host. The previous Vagrantfile already deploys such configurations, for that, all you need to do is create the <code>reverse-proxy-linkerdviz.sh</code> file in the same directory. The content of this file is displayed below.</p> <pre><code># Install NGINX\nsudo apt update && sudo apt install nginx -y\n\n# NGINX reverse proxy configuration\necho 'server {\n listen 8084;\n\n location / {\n proxy_pass http://127.0.0.1:50750;\n proxy_set_header Host localhost;\n proxy_set_header X-Real-IP $remote_addr;\n proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\n proxy_set_header X-Forwarded-Proto $scheme;\n }\n}' > /home/vagrant/expose-linkerd\n\n# Create symlink of the NGINX configuration file\nsudo ln -s /home/vagrant/expose-linkerd /etc/nginx/sites-enabled/\n\n# Commit the reverse proxy configurations\nsudo systemctl restart nginx\n\n# Enable start on login\necho \"linkerd viz dashboard &\" >> .profile\n\n# Start dashboard\nlinkerd viz dashboard &\n\necho \"Linkerd Viz dashboard running!\"\n</code></pre>","text":""},{"location":"deployment_guide/#12-install-microk8s","title":"1.2. Install MicroK8s","text":"<p>This section describes how to deploy the MicroK8s Kubernetes platform and configure it to be used with ETSI TeraFlowSDN controller. Besides, Docker is installed to build docker images for the ETSI TeraFlowSDN controller.</p> <p>The steps described in this section might take some minutes depending on your internet connection speed and the resources assigned to your VM, or the specifications of your physical server.</p> <p>To facilitate work, these steps are easier to be executed through an SSH connection, for instance using tools like PuTTY or MobaXterm.</p> Upgrade the Ubuntu distribution <p> Skip this step if you already did it during the creation of the VM.</p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> Install prerequisites <p></p> <pre><code>sudo apt-get install -y ca-certificates curl gnupg lsb-release snapd jq\n</code></pre> Install Docker CE <p> Install Docker CE and Docker BuildX plugin</p> <pre><code>sudo apt-get install -y docker.io docker-buildx\n</code></pre> <p>NOTE: Starting from Docker v23, Build architecture has been updated and <code>docker build</code> command entered into deprecation process in favor of the new <code>docker buildx build</code> command. Package <code>docker-buildx</code> provides the new <code>docker buildx build</code> command.</p> <p>Add key \"insecure-registries\" with the private repository to the daemon configuration. It is done in two commands since sometimes read from and write to same file might cause trouble.</p> <pre><code>if [ -s /etc/docker/daemon.json ]; then cat /etc/docker/daemon.json; else echo '{}'; fi \\\n | jq 'if has(\"insecure-registries\") then . else .+ {\"insecure-registries\": []} end' -- \\\n | jq '.\"insecure-registries\" |= (.+ [\"localhost:32000\"] | unique)' -- \\\n | tee tmp.daemon.json\nsudo mv tmp.daemon.json /etc/docker/daemon.json\nsudo chown root:root /etc/docker/daemon.json\nsudo chmod 600 /etc/docker/daemon.json\n</code></pre> <p>Restart the Docker daemon</p> <pre><code>sudo systemctl restart docker\n</code></pre> Install MicroK8s <p></p> <p>Important: By default, Kubernetes uses CIDR 10.1.0.0/16 for pods and CIDR 10.152.183.0/24 for services. If they conflict with your internal network CIDR, you might need to change Kubernetes CIDRs at deployment time. To do so, check links below and ask for support if needed.</p> <ul> <li>MicroK8s - How to configure network Dual-stack</li> <li>MicroK8s - MicroK8s CNI Configuration</li> </ul> <pre><code># Install MicroK8s\nsudo snap install microk8s --classic --channel=1.29/stable\n\n# Create alias for command \"microk8s.kubectl\" to be usable as \"kubectl\"\nsudo snap alias microk8s.kubectl kubectl\n</code></pre> <p>It is important to make sure that <code>ufw</code> will not interfere with the internal pod-to-pod and pod-to-Internet traffic. To do so, first check the status. If <code>ufw</code> is active, use the following command to enable the communication.</p> <pre><code># Verify status of ufw firewall\nsudo ufw status\n\n# If ufw is active, install following rules to enable access pod-to-pod and pod-to-internet\nsudo ufw allow in on cni0 && sudo ufw allow out on cni0\nsudo ufw default allow routed\n</code></pre> <p>NOTE: MicroK8s can be used to compose a Highly Available Kubernetes cluster enabling you to construct an environment combining the CPU, RAM and storage resources of multiple machines. If you are interested in this procedure, review the official instructions in How to build a highly available Kubernetes cluster with MicroK8s, in particular, the step Create a MicroK8s multi-node cluster.</p> <p>References:</p> <ul> <li>The lightweight Kubernetes > Install MicroK8s</li> <li>Install a local Kubernetes with MicroK8s</li> <li>How to build a highly available Kubernetes cluster with MicroK8s</li> <li>MicroK8s - How to configure network Dual-stack</li> <li>MicroK8s - MicroK8s CNI Configuration</li> </ul> Add user to the docker and microk8s groups <p></p> <p>It is important that your user has the permission to run <code>docker</code> and <code>microk8s</code> in the terminal. To allow this, you need to add your user to the <code>docker</code> and <code>microk8s</code> groups with the following commands:</p> <pre><code>sudo usermod -a -G docker $USER\nsudo usermod -a -G microk8s $USER\nsudo chown -f -R $USER $HOME/.kube\nsudo reboot\n</code></pre> <p>In case that you get trouble executing the following commands, might due to the .kube folder is not automatically provisioned into your home folder, you may follow the steps below:</p> <pre><code>mkdir -p $HOME/.kube\nsudo chown -f -R $USER $HOME/.kube\nmicrok8s config > $HOME/.kube/config\nsudo reboot\n</code></pre> Check status of Kubernetes and addons <p> To retrieve the status of Kubernetes once, run the following command:</p> <pre><code>microk8s.status --wait-ready\n</code></pre> <p>To retrieve the status of Kubernetes periodically (e.g., every 1 second), run the following command:</p> <pre><code>watch -n 1 microk8s.status --wait-ready\n</code></pre> Check all resources in Kubernetes <p> To retrieve the status of the Kubernetes resources once, run the following command:</p> <pre><code>kubectl get all --all-namespaces\n</code></pre> <p>To retrieve the status of the Kubernetes resources periodically (e.g., every 1 second), run the following command:</p> <pre><code>watch -n 1 kubectl get all --all-namespaces\n</code></pre> Enable addons <p></p> <p>First, we need to enable the community plugins (maintained by third parties):</p> <pre><code>microk8s.enable community\n</code></pre> <p>The Addons to be enabled are:</p> <ul> <li><code>dns</code>: enables resolving the pods and services by name</li> <li><code>helm3</code>: required to install NATS</li> <li><code>hostpath-storage</code>: enables providing storage for the pods (required by <code>registry</code>)</li> <li><code>ingress</code>: deploys an ingress controller to expose the microservices outside Kubernetes</li> <li><code>registry</code>: deploys a private registry for the TFS controller images</li> <li><code>linkerd</code>: deploys the linkerd service mesh used for load balancing among replicas</li> <li><code>prometheus</code>: set of tools that enable TFS observability through per-component instrumentation</li> <li><code>metrics-server</code>: deploys the Kubernetes metrics server for API access to service metrics</li> </ul> <pre><code>microk8s.enable dns helm3 hostpath-storage ingress registry prometheus metrics-server linkerd\n</code></pre> <p>Important: Enabling some of the addons might take few minutes. Do not proceed with next steps until the addons are ready. Otherwise, the deployment might fail. To confirm everything is up and running:</p> <ol> <li>Periodically Check the status of Kubernetes until you see the addons [dns, ha-cluster, helm3, hostpath-storage, ingress, linkerd, metrics-server, prometheus, registry, storage] in the enabled block.</li> <li>Periodically Check Kubernetes resources until all pods are Ready and Running.</li> <li>If it takes too long for the Pods to be ready, we observed that rebooting the machine may help.</li> </ol> <p>Then, create aliases to make the commands easier to access:</p> <pre><code>sudo snap alias microk8s.helm3 helm3\nsudo snap alias microk8s.linkerd linkerd\n</code></pre> <p>To validate that <code>linkerd</code> is working correctly, run:</p> <pre><code>linkerd check\n</code></pre> <p>To validate that the <code>metrics-server</code> is working correctly, run:</p> <pre><code>kubectl top pods --all-namespaces\n</code></pre> <p>and you should see a screen similar to the <code>top</code> command in Linux, showing the columns namespace, pod name, CPU (cores), and MEMORY (bytes).</p> <p>In case pods are not starting, check information from pods logs. For example, linkerd is sensitive for proper /etc/resolv.conf syntax.</p> <pre><code>kubectl logs <podname> --namespace <namespace>\n</code></pre> <p>If the command shows an error message, also restarting the machine might help.</p> Stop, Restart, and Redeploy <p> Find below some additional commands you might need while you work with MicroK8s:</p> <pre><code>microk8s.stop # stop MicroK8s cluster (for instance, before power off your computer)\nmicrok8s.start # start MicroK8s cluster\nmicrok8s.reset # reset infrastructure to a clean state\n</code></pre> <p>If the following commands does not work to recover the MicroK8s cluster, you can redeploy it.</p> <p>If you want to keep MicroK8s configuration, use:</p> <pre><code>sudo snap remove microk8s\n</code></pre> <p>If you need to completely drop MicroK8s and its complete configuration, use:</p> <pre><code>sudo snap remove microk8s --purge\nsudo apt-get remove --purge docker.io docker-buildx\n</code></pre> <p>IMPORTANT: After uninstalling MicroK8s, it is convenient to reboot the computer (the VM if you work on a VM, or the physical computer if you use a physical computer). Otherwise, there are system configurations that are not correctly cleaned. Especially in what port forwarding and firewall rules matters.</p> <p>After the reboot, redeploy as it is described in this section.</p>"},{"location":"deployment_guide/#13-deploy-teraflowsdn","title":"1.3. Deploy TeraFlowSDN","text":"<p>This section describes how to deploy TeraFlowSDN controller on top of MicroK8s using the environment configured in the previous sections.</p> Install prerequisites <p></p> <pre><code>sudo apt-get install -y git curl jq\n</code></pre> Clone the Git repository of the TeraFlowSDN controller <p> Clone from ETSI-hosted GitLab code repository:</p> <pre><code>mkdir ~/tfs-ctrl\ngit clone https://labs.etsi.org/rep/tfs/controller.git ~/tfs-ctrl\n</code></pre> <p>Important: The original H2020-TeraFlow project hosted on GitLab.com has been archieved and will not receive further contributions/updates. Please, clone from ETSI-hosted GitLab code repository.</p> Checkout the appropriate Git branch <p> TeraFlowSDN controller versions can be found in the appropriate release tags and/or branches as described in Home > Versions.</p> <p>By default the branch master is checked out and points to the latest stable version of the TeraFlowSDN controller, while branch develop contains the latest developments and contributions under test and validation.</p> <p>To switch to the appropriate branch run the following command, changing <code>develop</code> by the name of the branch you want to deploy:</p> <pre><code>cd ~/tfs-ctrl\ngit checkout develop\n</code></pre> Prepare a deployment script with the deployment settings <p></p> <p>Create a new deployment script, e.g., <code>my_deploy.sh</code>, adding the appropriate settings as follows.</p> <p>This section provides just an overview of the available settings. An example <code>my_deploy.sh</code> script is provided in the root folder of the project for your convenience with full description of all the settings.</p> <p>Note: The example <code>my_deploy.sh</code> script provides reasonable settings for deploying a functional and complete enough TeraFlowSDN controller, and a brief description of their meaning. To see extended descriptions, check scripts in the <code>deploy</code> folder.</p> <pre><code>cd ~/tfs-ctrl\ntee my_deploy.sh >/dev/null << EOF\n# ----- TeraFlowSDN ------------------------------------------------------------\nexport TFS_REGISTRY_IMAGES=\"http://localhost:32000/tfs/\"\nexport TFS_COMPONENTS=\"context device pathcomp service nbi webui\"\nexport TFS_IMAGE_TAG=\"dev\"\nexport TFS_K8S_NAMESPACE=\"tfs\"\nexport TFS_EXTRA_MANIFESTS=\"manifests/nginx_ingress_http.yaml\"\nexport TFS_GRAFANA_PASSWORD=\"admin123+\"\nexport TFS_SKIP_BUILD=\"\"\n\n# ----- CockroachDB ------------------------------------------------------------\nexport CRDB_NAMESPACE=\"crdb\"\nexport CRDB_EXT_PORT_SQL=\"26257\"\nexport CRDB_EXT_PORT_HTTP=\"8081\"\nexport CRDB_USERNAME=\"tfs\"\nexport CRDB_PASSWORD=\"tfs123\"\nexport CRDB_DEPLOY_MODE=\"single\"\nexport CRDB_DROP_DATABASE_IF_EXISTS=\"YES\"\nexport CRDB_REDEPLOY=\"\"\n\n# ----- NATS -------------------------------------------------------------------\nexport NATS_NAMESPACE=\"nats\"\nexport NATS_EXT_PORT_CLIENT=\"4222\"\nexport NATS_EXT_PORT_HTTP=\"8222\"\nexport NATS_REDEPLOY=\"\"\n\n# ----- QuestDB ----------------------------------------------------------------\nexport QDB_NAMESPACE=\"qdb\"\nexport QDB_EXT_PORT_SQL=\"8812\"\nexport QDB_EXT_PORT_ILP=\"9009\"\nexport QDB_EXT_PORT_HTTP=\"9000\"\nexport QDB_USERNAME=\"admin\"\nexport QDB_PASSWORD=\"quest\"\nexport QDB_TABLE_MONITORING_KPIS=\"tfs_monitoring_kpis\"\nexport QDB_TABLE_SLICE_GROUPS=\"tfs_slice_groups\"\nexport QDB_DROP_TABLES_IF_EXIST=\"YES\"\nexport QDB_REDEPLOY=\"\"\n\nEOF\n</code></pre> <p>The settings are organized in 4 sections:</p> <ul> <li>Section <code>TeraFlowSDN</code>:<ul> <li><code>TFS_REGISTRY_IMAGE</code> enables to specify the private Docker registry to be used, by default, we assume to use the Docker respository enabled in MicroK8s.</li> <li><code>TFS_COMPONENTS</code> specifies the components their Docker image will be rebuilt, uploaded to the private Docker registry, and deployed in Kubernetes.</li> <li><code>TFS_IMAGE_TAG</code> defines the tag to be used for Docker images being rebuilt and uploaded to the private Docker registry.</li> <li><code>TFS_K8S_NAMESPACE</code> specifies the name of the Kubernetes namespace to be used for deploying the TFS components.</li> <li><code>TFS_EXTRA_MANIFESTS</code> enables to provide additional manifests to be applied into the Kubernetes environment during the deployment. Typical use case is to deploy ingress controllers, service monitors for Prometheus, etc.</li> <li><code>TFS_GRAFANA_PASSWORD</code> lets you specify the password you want to use for the <code>admin</code> user of the Grafana instance being deployed and linked to the Monitoring component.</li> <li><code>TFS_SKIP_BUILD</code>, if set to <code>YES</code>, prevents rebuilding the Docker images. That means, the deploy script will redeploy existing Docker images without rebuilding/updating them.</li> </ul> </li> <li>Section <code>CockroachDB</code>: enables to configure the deployment of the backend CockroachDB database.<ul> <li>Check example script <code>my_deploy.sh</code> for further details.</li> </ul> </li> <li>Section <code>NATS</code>: enables to configure the deployment of the backend NATS message broker.<ul> <li>Check example script <code>my_deploy.sh</code> for further details.</li> </ul> </li> <li>Section <code>QuestDB</code>: enables to configure the deployment of the backend QuestDB timeseries database.<ul> <li>Check example script <code>my_deploy.sh</code> for further details.</li> </ul> </li> </ul> Confirm that MicroK8s is running <p></p> <p>Run the following command:</p> <pre><code>microk8s status\n</code></pre> <p>If it is reported <code>microk8s is not running, try microk8s start</code>, run the following command to start MicroK8s:</p> <pre><code>microk8s start\n</code></pre> <p>Confirm everything is up and running:</p> <ol> <li>Periodically Check the status of Kubernetes until you see the addons [dns, ha-cluster, helm3, hostpath-storage, ingress, registry, storage] in the enabled block.</li> <li>Periodically Check Kubernetes resources until all pods are Ready and Running.</li> </ol> Deploy TFS controller <p> First, source the deployment settings defined in the previous section. This way, you do not need to specify the environment variables in each and every command you execute to operate the TFS controller. Be aware to re-source the file if you open new terminal sessions. Then, run the following command to deploy TeraFlowSDN controller on top of the MicroK8s Kubernetes platform.</p> <pre><code>cd ~/tfs-ctrl\nsource my_deploy.sh\n./deploy/all.sh\n</code></pre> <p>The script performs the following steps:</p> <ul> <li>Executes script <code>./deploy/crdb.sh</code> to automate deployment of CockroachDB database used by Context component.<ul> <li>The script automatically checks if CockroachDB is already deployed.</li> <li>If there are settings instructing to drop the database and/or redeploy CockroachDB, it does the appropriate actions to honor them as defined in previous section.</li> </ul> </li> <li>Executes script <code>./deploy/nats.sh</code> to automate deployment of NATS message broker used by Context component.<ul> <li>The script automatically checks if NATS is already deployed.</li> <li>If there are settings instructing to redeploy the message broker, it does the appropriate actions to honor them as defined in previous section.</li> </ul> </li> <li>Executes script <code>./deploy/qdb.sh</code> to automate deployment of QuestDB timeseries database used by Monitoring component.<ul> <li>The script automatically checks if QuestDB is already deployed.</li> <li>If there are settings instructing to redeploy the timeseries database, it does the appropriate actions to honor them as defined in previous section.</li> </ul> </li> <li>Executes script <code>./deploy/tfs.sh</code> to automate deployment of TeraFlowSDN.<ul> <li>Creates the namespace defined in <code>TFS_K8S_NAMESPACE</code></li> <li>Creates secrets for CockroachDB, NATS, and QuestDB to be used by Context and Monitoring components.</li> <li>Builds the Docker images for the components defined in <code>TFS_COMPONENTS</code></li> <li>Tags the Docker images with the value of <code>TFS_IMAGE_TAG</code></li> <li>Pushes the Docker images to the repository defined in <code>TFS_REGISTRY_IMAGE</code></li> <li>Deploys the components defined in <code>TFS_COMPONENTS</code></li> <li>Creates the file <code>tfs_runtime_env_vars.sh</code> with the environment variables for the components defined in <code>TFS_COMPONENTS</code> defining their local host addresses and their port numbers.</li> <li>Applies extra manifests defined in <code>TFS_EXTRA_MANIFESTS</code> such as:</li> <li>Creating an ingress controller listening at port 80 for HTTP connections to enable external access to the TeraFlowSDN WebUI, Grafana Dashboards, and Compute NBI interfaces.</li> <li>Deploying service monitors to enable monitoring the performance of the components, device drivers and service handlers.</li> <li>Initialize and configure the Grafana dashboards (if Monitoring component is deployed)</li> </ul> </li> <li>Report a summary of the deployment<ul> <li>See Show Deployment and Logs</li> </ul> </li> </ul>"},{"location":"deployment_guide/#14-webui-and-grafana-dashboards","title":"1.4. WebUI and Grafana Dashboards","text":"<p>This section describes how to get access to the TeraFlowSDN controller WebUI and the monitoring Grafana dashboards.</p> Access the TeraFlowSDN WebUI <p> If you followed the installation steps based on MicroK8s, you got an ingress controller installed that exposes on TCP port 80.</p> <p>Besides, the ingress controller defines the following reverse proxy paths (on your local machine):</p> <ul> <li><code>http://127.0.0.1/webui</code>: points to the WebUI of TeraFlowSDN.</li> <li><code>http://127.0.0.1/grafana</code>: points to the Grafana dashboards. This endpoint brings access to the monitoring dashboards of TeraFlowSDN. The credentials for the <code>admin</code>user are those defined in the <code>my_deploy.sh</code> script, in the <code>TFS_GRAFANA_PASSWORD</code> variable.</li> <li><code>http://127.0.0.1/restconf</code>: points to the Compute component NBI based on RestCONF. This endpoint enables connecting external software, such as ETSI OpenSourceMANO NFV Orchestrator, to TeraFlowSDN.</li> </ul> <p>Note: In the creation of the VM, a forward from host TCP port 8080 to VM's TCP port 80 is configured, so the WebUIs and REST APIs of TeraFlowSDN should be exposed on the endpoint <code>127.0.0.1:8080</code> of your local machine instead of <code>127.0.0.1:80</code>.</p>"},{"location":"deployment_guide/#15-show-deployment-and-logs","title":"1.5. Show Deployment and Logs","text":"<p>This section presents some helper scripts to inspect the status of the deployment and the logs of the components. These scripts are particularly helpful for troubleshooting during execution of experiments, development, and debugging.</p> Report the deployment of the TFS controller <p></p> <p>The summary report given at the end of the Deploy TFS controller procedure can be generated manually at any time by running the following command. You can avoid sourcing <code>my_deploy.sh</code> if it has been already done.</p> <pre><code>cd ~/tfs-ctrl\nsource my_deploy.sh\n./deploy/show.sh\n</code></pre> <p>Use this script to validate that all the pods, deployments, replica sets, ingress controller, etc. are ready and have the appropriate state, e.g., running for Pods, and the services are deployed and have appropriate IP addresses and port numbers.</p> Report the log of a specific TFS controller component <p></p> <p>A number of scripts are pre-created in the <code>scripts</code> folder to facilitate the inspection of the component logs. For instance, to dump the log of the Context component, run the following command. You can avoid sourcing <code>my_deploy.sh</code> if it has been already done.</p> <pre><code>source my_deploy.sh\n./scripts/show_logs_context.sh\n</code></pre>"},{"location":"development_guide/","title":"2. Development Guide","text":""},{"location":"development_guide/#21-configure-environment","title":"2.1. Configure Environment","text":""},{"location":"development_guide/#211-python","title":"2.1.1. PythonUpgrade the Ubuntu distribution <p>Skip this step if you already did it during the installation of your machine.</p> <pre><code>sudo apt-get update -y\nsudo apt-get dist-upgrade -y\n</code></pre> Install PyEnv dependencies <p></p> <pre><code>sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget \\\n curl llvm git libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev\n</code></pre> Install PyEnv <p></p> <p>We recommend installing PyEnv through PyEnv Installer. Below you can find the instructions, but we refer you to the link for updated instructions.</p> <pre><code>curl https://pyenv.run | bash\n# When finished, edit ~/.bash_profile // ~/.profile // ~/.bashrc as the installer proposes.\n# In general, it means to append the following lines to ~/.bashrc:\nexport PYENV_ROOT=\"$HOME/.pyenv\"\ncommand -v pyenv >/dev/null || export PATH=\"$PYENV_ROOT/bin:$PATH\"\neval \"$(pyenv init -)\"\neval \"$(pyenv virtualenv-init -)\"\n</code></pre> <p>In case .bashrc is not linked properly to your profile, you may need to append the following line into your local .profile file:</p> <pre><code># Open ~/.profile and append this line:\n+source \"$HOME\"/.bashrc\n</code></pre> Restart the machine <p> Restart the machine for all the changes to take effect.</p> <pre><code>sudo reboot\n</code></pre> Install Python 3.9 over PyEnv <p></p> <p>ETSI TeraFlowSDN uses Python 3.9 by default. You should install the latest stable update of Python 3.9, i.e., avoid \"-dev\" versions. To find the latest version available in PyEnv, you can run the following command:</p> <pre><code>pyenv install --list | grep \" 3.9\"\n</code></pre> <p>At the time of writing, this command will output the following list:</p> <pre><code> 3.9.0\n 3.9-dev\n 3.9.1\n 3.9.2\n 3.9.4\n 3.9.5\n 3.9.6\n 3.9.7\n 3.9.8\n 3.9.9\n 3.9.10\n 3.9.11\n 3.9.12\n 3.9.13\n 3.9.14 \n 3.9.15\n 3.9.16 ** always select the latest version **\n</code></pre> <p>Therefore, the latest stable version is Python 3.9.16. To install this version, you should run:</p> <pre><code>pyenv install 3.9.16\n # This command might take some minutes depending on your Internet connection speed \n # and the performance of your machine.\n</code></pre> Create the Virtual Environment for TeraFlowSDN <p> The following commands create a virtual environment named as <code>tfs</code> using Python 3.9 and associate that environment with the current folder, i.e., <code>~/tfs-ctrl</code>. That way, when you are in that folder, the associated virtual environment will be used, thus inheriting the Python interpreter, i.e., Python 3.9, and the Python packages installed on it.</p> <pre><code>cd ~/tfs-ctrl\npyenv virtualenv 3.9.16 tfs\npyenv local 3.9.16/envs/tfs\n</code></pre> <p>After completing these commands, you should see in your prompt that now you're within the virtual environment <code>3.9.16/envs/tfs</code> on folder <code>~/tfs-ctrl</code>:</p> <pre><code>(3.9.16/envs/tfs) tfs@tfs-vm:~/tfs-ctrl$\n</code></pre> <p>In case that the correct pyenv does not get automatically activated when you change to the tfs-ctrl/ folder, then execute the following command:</p> <pre><code>cd ~/tfs-ctrl\npyenv activate 3.9.16/envs/tfs\n</code></pre> Install the basic Python packages within the virtual environment <p> From within the <code>3.9.16/envs/tfs</code> environment on folder <code>~/tfs-ctrl</code>, run the following commands to install the basic Python packages required to work with TeraFlowSDN.</p> <pre><code>cd ~/tfs-ctrl\n./install_requirements.sh\n</code></pre> <p>Some dependencies require to re-load the session, so log-out and log-in again.</p> Generate the Python code from the gRPC Proto messages and services <p></p> <p>The components, e.g., microservices, of the TeraFlowSDN controller, in general, use a gRPC-based open API to interoperate. All the protocol definitions can be found in sub-folder <code>proto</code> within the root project folder. For additional details on gRPC, visit the official web-page gRPC.</p> <p>In order to interact with the components, (re-)generate the Python code from gRPC definitions running the following command:</p> <pre><code>cd ~/tfs-ctrl\nproto/generate_code_python.sh\n</code></pre>","text":"<p>This section describes how to configure the Python environment to run experiments and develop code for the ETSI TeraFlowSDN controller. In particular, we use PyEnv to install the appropriate version of Python and manage the virtual environments.</p>"},{"location":"development_guide/#212-java-quarkus","title":"2.1.2. Java (Quarkus) <p>This section describe the steps needed to create a development environment for TFS components implemented in Java. Currently, ZTP and Policy components have been developed in Java (version 11) and use the Quarkus framework, which enables kubernetes-native development.</p> Install JDK <p> To begin, make sure that you have java installed and in the correct version</p> <pre><code>java --version\n</code></pre> <p>If you don't have java installed you will get an error like the following:</p> <pre><code>Command 'java' not found, but can be installed with:\n\nsudo apt install default-jre # version 2:1.11-72build1, or\nsudo apt install openjdk-11-jre-headless # version 11.0.14+9-0ubuntu2\nsudo apt install openjdk-17-jre-headless # version 17.0.2+8-1\nsudo apt install openjdk-18-jre-headless # version 18~36ea-1\nsudo apt install openjdk-8-jre-headless # version 8u312-b07-0ubuntu1\n</code></pre> <p>In which case you should use the following command to install the correct version:</p> <pre><code>sudo apt install openjdk-11-jre-headless\n</code></pre> <p>Else you should get something like the following:</p> <pre><code>openjdk 11.0.18 2023-01-17\nOpenJDK Runtime Environment (build 11.0.18+10-post-Ubuntu-0ubuntu120.04.1)\nOpenJDK 64-Bit Server VM (build 11.0.18+10-post-Ubuntu-0ubuntu120.04.1, mixed mode, sharing)\n</code></pre> Compiling and testing existing components <p> In the root directory of the existing Java components you will find an executable maven wrapper named <code>mvnw</code>. You could use this executable, which is already configured in pair with the components, instead of your local maven installation. So for example if you want to compile the project you would run the following:</p> <pre><code>./mvnw compile\n</code></pre> VS Code Quarkus plugin <p> In case you are using VS Code for development, we suggest to install the official Quarkus extension. The extension should be able to automatically find the current open project and integrate with the above <code>mvnw</code> maven wrapper, making it easier to control the maven lifecycle. Make sure that you open the specific component directory (i.e., <code>src/ztp</code> or <code>src/policy</code>) and not the general controller one (i.e., <code>src</code>.)</p> New Java TFS component <p></p> <p>Sample Project</p> <p>If you want to create a new TFS component written in Java you could generate a new Quarkus project based on the following project:</p> <p>TFS Sample Quarkus Project</p> <p>In that way, you should have most of the libraries you would need to integrate with the rest of the TFS Components. Feel free however to add or remove libraries depending on your needs.</p> <p>Initial setup</p> <p>If you used the sample project above, you should have a project with a basic structure. However there are some steps that you should take before starting development.</p> <p>First make sure that you copy the protobuff files, that are found in the root directory of the TFS SDN controller, to the <code>new-component/src/main/proto</code> directory.</p> <p>Next you should create the following files:</p> <ul> <li><code>new-component/.gitlab-ci.yml</code></li> <li><code>new-component/Dockerfile</code></li> <li><code>new-component/src/resources/application.yaml</code></li> </ul> <p>We suggest to copy the respective files from existing components (Automation and Policy) and change them according to your needs.</p>","text":""},{"location":"development_guide/#213-java-maven","title":"2.1.3. Java (Maven) <p>Page under construction</p>","text":""},{"location":"development_guide/#214-rust","title":"2.1.4. Rust <p>Page under construction</p>","text":""},{"location":"development_guide/#215-erlang","title":"2.1.5. Erlang <p>This section describes how to configure the Erlang environment to run experiments and develop code for the ETSI TeraFlowSDN controller.</p> <p>First we need to install Erlang. There is multiple way, for development we will be using ASDF, a tool that allows the installation of multiple version of Erlang at the same time, and switch from one version to the other at will.</p> <ul> <li> <p>First, install any missing dependencies: <code>bash sudo apt install curl git autoconf libncurses-dev build-essential m4 libssl-dev</code></p> </li> <li> <p>Download ASDF tool to the local account: <code>bash git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch v0.10.2</code></p> </li> <li> <p>Make ASDF activate on login by adding these lines at the end of the <code>~/.bashrc</code> file: <code>bash . $HOME/.asdf/asdf.sh . $HOME/.asdf/completions/asdf.bash</code></p> </li> <li> <p>Logout and log back in to activate ASDF.</p> </li> </ul> <p>ASDF supports multiple tools by installing there corresponding plugins.</p> <ul> <li> <p>Install ASDF plugin for Erlang: <code>bash asdf plugin add erlang https://github.com/asdf-vm/asdf-erlang.git</code></p> </li> <li> <p>Install a version of Erlang: <code>bash asdf install erlang 24.3.4.2</code></p> </li> <li> <p>Activate Erlang locally for TFS controller. This will create a local file called <code>.tool-versions</code> defining which version of the tools to use when running under the current directory: <code>bash cd tfs-ctrl/ asdf local erlang 24.3.4.2</code></p> </li> </ul> <p>Erlang projects uses a build tool called rebar3. It is used to manager project dependenecies, compile a project and generate project releases.</p> <ul> <li> <p>Install rebar3 localy from source: <code>bash cd ~ git clone https://github.com/erlang/rebar3.git cd rebar3 asdf local erlang 24.3.4.2 ./bootstrap ./rebar3 local install</code></p> </li> <li> <p>Update <code>~/.bashrc</code> to use rebar3 by adding this line at the end: <code>bash export PATH=$HOME/.cache/rebar3/bin:$PATH</code></p> </li> <li> <p>Logout and log back in.</p> </li> </ul>","text":""},{"location":"development_guide/#216-kotlin","title":"2.1.6. Kotlin <p>This section describes the steps needed to establish a development environment for TFS (TeraFlowSDN) components implemented in Kotlin. Currently, the <code>Gateway</code> component stands as the sole component developed in Kotlin.</p> Install Kotlin <p> To begin, make sure that you have kotlin installed and its current version:</p> <pre><code>kotlin -version\n</code></pre> <p>If you don't have kotlin installed you will get an error like the following:</p> <pre><code>Command 'kotlin' not found, but can be installed with:\nsudo snap install --classic kotlin\n</code></pre> <p>In which case you should use the following command to install the correct version:</p> <pre><code> sudo snap install --classic kotlin\n</code></pre> <p>Currently, the recommended version is 1.6.21, which uses Java Runtime Environment (JRE) version 11.</p> Compiling and testing existing components <p> To compile a Kotlin project using Gradle, similarly to using the Maven wrapper (mvnw) for Java projects, you can use the Gradle wrapper (gradlew) within the root directory of your Kotlin component, specifically the gateway directory.</p> <p>Navigate to the gateway directory within your Kotlin project. Ensure that it contains the gradlew script along with the gradle directory. Then, create a directory named <code>proto</code> and move all the files with extension <code>.proto</code> in this way:</p> <pre><code>mkdir proto\ncp ../../../proto/*.proto ./proto \n</code></pre> <p>For building the application, open a terminal or command prompt, navigate to the gateway directory, and run the following command:</p> <pre><code>./gradlew build\n</code></pre> <p>The following program runs the gateway application:</p> <pre><code>./gradlew runServer \n</code></pre> New Kotlin TFS component <p></p> <p>Sample Project</p> <p>If you want to create a new TFS component written in Kotlin you could generate a Kotlin project using <code>gradle</code>. The recommended version is 7.1. Follow the following Gradle guide for its installation. For building the prokect follow this link instead.</p> <p>From inside the new project directory, run the init task using the following command in a terminal: <code>gradle init</code>. </p> <p>The output will look like this:</p> <pre><code>$ gradle init\n\nSelect type of project to generate:\n 1: basic\n 2: application\n 3: library\n 4: Gradle plugin\nEnter selection (default: basic) [1..4] 2\n\nSelect implementation language:\n 1: C++\n 2: Groovy\n 3: Java\n 4: Kotlin\n 5: Scala\n 6: Swift\nEnter selection (default: Java) [1..6] 4\n\nSelect build script DSL:\n 1: Groovy\n 2: Kotlin\nEnter selection (default: Groovy) [1..2] 1\n\nProject name (default: demo):\nSource package (default: demo):\n\n\nBUILD SUCCESSFUL\n2 actionable tasks: 2 executed\n</code></pre> <p>Initial setup</p> <p>The <code>gradle init</code> command generates the new project. </p> <p>First, ensure the protobuf files are copied from the root directory of the TFS SDN controller. Run the following command in the directory of the new project:</p> <pre><code>mkdir proto \ncp TFS/project/root/path/proto/*.proto ./proto/\n</code></pre> <p>The file <code>build.gradle.ktl</code> is fundamental as it manages dependencies. Adjust it for adding external libraries. </p> <p>Next you should create the following files:</p> <ol> <li><code>new-component/.gitlab-ci.yml</code></li> <li><code>new-component/Dockerfile</code></li> </ol> <p>We recommend leveraging the structures and configurations found in the files of existing components for inspiration.</p> <p>Docker Container This project operates with Docker containers. Ensure the production of the container version for your component. To generate the container version of the project, modify the 'new-component/Dockerfile.' Execute the following command from the project's root directory:</p> <pre><code>docker build -t new-image -f new-component/Dockerfile ./\n</code></pre>","text":""},{"location":"development_guide/#22-configure-vscode","title":"2.2. Configure VScode","text":"Install VSCode and the required extensions <p>If not already done, install VSCode and the \"Remote SSH\" extension on your local machine, not in the VM.</p> <p>Note: \"Python\" extension is not required here. It will be installed later on the VSCode server running on the VM.</p> Configure the \"Remote SSH\" extension <p></p> <ul> <li>Go to left icon \"Remote Explorer\"</li> <li>Click the \"gear\" icon next to \"SSH TARGETS\" on top of \"Remote Explorer\" bar</li> <li>Choose to edit \"<...>/.ssh/config\" file (or equivalent)</li> <li>Add the following entry (assuming previous port forwarding configuration):</li> </ul> <pre><code>Host TFS-VM\n HostName 127.0.0.1\n Port 2200\n ForwardX11 no\n User tfs\n</code></pre> <ul> <li>Save the file</li> <li>An entry \"TFS-VM\" should appear on \"SSH TARGETS\".</li> </ul> Connect VSCode to the VM through \"Remote SSH\" extension <p></p> <ul> <li>Right-click on \"TFS-VM\"</li> <li>Select \"Connect to Host in Current Window\"</li> <li>Reply to the questions asked<ul> <li>Platform of the remote host \"TFS-VM\": Linux</li> <li>\"TFS-VM\" has fingerprint \"\". Do you want to continue?: Continue <li>Type tfs user's password: tfs123</li> <li>You should be now connected to the TFS-VM.</li> <p>Note: if you get a connection error message, the reason might be due to wrong SSH server fingerprint. Edit file \"<...>/.ssh/known_hosts\" on your local user account, check if there is a line starting with \"[127.0.0.1]:2200\" (assuming previous port forwarding configuration), remove the entire line, save the file, and retry connection.</p> Add SSH key to prevent typing the password every time <p></p> <p>This step creates an SSH key in the VM and installs it on the VSCode to prevent having to type the password every time.</p> <ul> <li>In VSCode (connected to the VM), click menu \"Terminal > New Terminal\"</li> <li> <p>Run the following commands on the VM's terminal through VSCode <code>bash ssh-keygen -t rsa -b 4096 -f ~/.ssh/tfs-vm.key # leave password empty ssh-copy-id -i ~/.ssh/tfs-vm.key.pub tfs@10.0.2.10 # tfs@10.0.2.10's password: <type tfs user's password: tfs123> rm .ssh/known_hosts</code></p> </li> <li> <p>In VSCode, click left \"Explorer\" panel to expand, if not expanded, and click \"Open Folder\" button.</p> <ul> <li>Choose \"/home/tfs/\"</li> <li>Type tfs user's password when asked</li> <li>Trust authors of the \"/home/tfs [SSH: TFS-VM]\" folder when asked</li> </ul> </li> <li>Right click on the file \"tfs-vm.key\" in the file explorer<ul> <li>Select \"Download...\" option</li> <li>Download the file into your user's accout \".ssh\" folder</li> </ul> </li> <li> <p>Delete files \"tfs-vm.key\" and \"tfs-vm.key.pub\" on the TFS-VM.</p> </li> <li> <p>In VSCode, click left \"Remote Explorer\" panel to expand</p> <ul> <li>Click the \"gear\" icon next to \"SSH TARGETS\" on top of \"Remote Explorer\" bar</li> <li>Choose to edit \"<...>/.ssh/config\" file (or equivalent)</li> <li>Find entry \"Host TFS-VM\" and update it as follows: <code>Host TFS-VM HostName 127.0.0.1 Port 2200 ForwardX11 no User tfs IdentityFile \"<path to the downloaded identity private key file>\"</code></li> <li>Save the file</li> </ul> </li> <li>From now, VSCode will use the identity file to connect to the TFS-VM instead of the user's password.</li> </ul> Install VSCode Python Extension (in VSCode server) <p></p> <p>This step installs Python extensions in VSCode server running in the VM.</p> <ul> <li>In VSCode (connected to the VM), click left button \"Extensions\"</li> <li>Search \"Python\" extension in the extension Marketplace.</li> <li> <p>Install official \"Python\" extension released by Microsoft.</p> <ul> <li>By default, since you're connected to the VM, it will be installed in the VSCode server running in the VM.</li> </ul> </li> <li> <p>In VSCode (connected to the VM), click left button \"Explorer\"</p> </li> <li>Click \"Ctrl+Alt+P\" and type \"Python: Select Interpreter\". Select option \"Python: 3.9.13 64-bit ('tfs')\"</li> </ul> Define environment variables for VSCode <p></p> <p>The source code in the TFS controller project is hosted in folder <code>src/</code>. To help VSCode find the Python modules and packages, add the following file into your working space root folder:</p> <pre><code>echo \"PYTHONPATH=./src\" >> ~/tfs-ctrl/.env\n</code></pre>"},{"location":"development_guide/#23-develop-a-component-wip","title":"2.3. Develop A Component (WIP)","text":"<p>Page under construction</p>"},{"location":"faq/","title":"9. FAQ","text":"<p>This section addresses common questions you may encounter while working with TFS software.</p>"},{"location":"faq/#what-if-i-have-some-issues-while-installingusing-tfs","title":"What if I have some issues while installing/using TFS?","text":"<p>Feel free to join our Slack community channel and ask questions! Our experts will soon reply your question.</p> <p>General Slack Channel </p> <p>For any other bussiness, you can contact the SDG Support team at SDGsupport@etsi.org</p>"},{"location":"features_and_bugs/","title":"4. Feature and bugs","text":"<p>This section describes the procedures to request new features and enhancements, report bugs, and the workflows implemented to manage them.</p> <ul> <li>Feature Request Procedure</li> <li>Bug Report Procedure</li> <li>Feature LifeCycle</li> </ul>"},{"location":"features_and_bugs/#41-feature-request-procedure","title":"4.1. Feature Request Procedure","text":"<p>Project features go through a discussion and approval process. To propose a New Feature, TFS uses the issues on its GitLab code repository.</p> <p>Important: A feature request is about functionality, not about implementation details.</p> <ul> <li>Describe WHAT you are proposing, and WHY it is important.</li> <li>DO NOT describe HOW to do it. This is done when the new feature is approved by TSC by populating the design details.</li> </ul> <p>Two kind of requests are considered in this procedure:</p> <ul> <li>New Feature: a big change that potentially affects a number of components and requires an appropriate design phase.</li> <li>Enhancement: a relatively small change enhancing TFS that does not require a design phase.</li> </ul> Steps: <p></p> <ol> <li> <p>Go to New Issue page <code>https://labs.etsi.org/rep/tfs/controller/-/issues/new</code>.</p> <ul> <li>You need to be authenticated.</li> </ul> </li> <li> <p>Create a New Issue for your feature</p> <ul> <li>Title: A concise high level description of your feature (see some other examples in GitLab)</li> <li>Type: Issue</li> <li>Description: Choose the \"new-feature\" or \"enhancement\" project templates and fill-in the auto-generated template describing the feature/enhancement.</li> <li>Labels:<ul> <li>Select the type of request: <code>type::new-feature</code> / <code>type::enhancement</code></li> <li>If you foresee the components affected by the request, pick the appropriate labels for them.<ul> <li>Component labels have the form <code>comp-<component-name></code>.</li> </ul> </li> <li>PLEASE: Do not set other types of labels (to be set by TSC).</li> </ul> </li> <li>PLEASE: Do not set the following fields (to be set by TSC): EPIC, Assignee, Milestone, Weight, Due Date</li> <li>Submit the Issue</li> </ul> </li> <li> <p>Interact with the TSC and the Community through the issue.</p> <ul> <li>TSC will review your request. If it makes sense and its purpose is clear, it will be approved. Otherwise, TSC will provide questions for clarification.</li> </ul> </li> </ol> Designing a Feature: <p></p> <p>Once a feature has been approved, the design phase starts. The design should be included within the description of the feature (GitLab issue description) by concatenating the Design Feature Template (see below) and properly filling it in. In case the feature description becomes too long, attached files could be included to the feature.</p> <p>The design is expected to be socialized with the relevant stakeholders (e.g. MDLs and TSC). Dedicated slots can be allocated in the TECH calls on a per-request basis to discuss and refine it.</p> <p>For writing the design, you can check the design of existing features or use the design template below.</p> Templates: <p></p> <p>New feature / Enhancement request template:</p> <pre><code># Proposers\n\n- name-of-proposer-1 (institution-of-proposer-1)\n- name-of-proposer-2 (institution-of-proposer-2)\n...\n\n# Description\n\nDescribe your proposal in ~1000 characters.\nYou can reference external content listed in section \"References\" as [Ref-1].\n\n# Demo or definition of done\n\nDescribe which high level conditions needs to be fulfilled to demonstrate this feature implementation is completed.\nYou can reference external content (example, demo paper) listed in section \"References\" as [Ref-2].\n\n# References\n\n1. [Reference name](https://reference-url)\n2. Author1, Author2, Author3, et. al., \u201cMy demo using feature,\u201d in Conference-Name Demo Track, 20XX.\n</code></pre> <p>Feature design Template:</p> <pre><code># Feature Design\n\n## Clarifications to Expected Behavior Changes\n\nExisting component logic and workflows between components that need to be altered to realize this feature.\nRemember to justify these changes.\n...\n\n## References\n\nList of relevant references for this feature.\n...\n\n## Assumptions\n\nEnumerate the assumptions for this feature, e.g., fix XXX is implemented and merged, specific configurations, specific\ncomponents deployed.\n...\n\n## Impacted Components\n\nList of impacted components: Context, Device, Service, PathComp, Slice, Monitoring, Automation, Policy, Compute, etc.\nJust an enumeration, elaboration of impacts is done below.\n\n## Component1 Impact\n\nDescribe impact (changes) on component1.\n...\n\n## Component2 Impact\n\nDescribe impact (changes) on component2.\n...\n\n## Testing\n\nDescribe test sets (unitary and integration) to be carried out.\nThis section can include/reference external experiments, demo papers, etc.\n...\n</code></pre>"},{"location":"features_and_bugs/#42-bug-report-procedure","title":"4.2. Bug Report Procedure","text":"<p>Project bugs go through a review, confirmation, and resolution process. To report a Bug, TFS uses the issues on its GitLab code repository.</p> <p>Important: New bugs must be properly documented. Please, provide details on:</p> <ul> <li>the details on the deployment environment (Operating System, MicroK8s, etc.)</li> <li>the TeraFlowSDN version (or branch/commit)</li> <li>the TFS deployment settings (components, particular configurations, etc.)</li> <li>the particular sequence of actions that resulted in the bug</li> <li>the TFS components affected by the bug (if you know them)</li> <li>the expected behavior (if you know it)</li> </ul> <p>Without this minimal information, it will/might be difficult to reproduce and resolve the bug, as well as validating the completeness of the solution.</p> Steps: <p></p> <ol> <li> <p>Go to New Issue page <code>https://labs.etsi.org/rep/tfs/controller/-/issues/new</code>.</p> <ul> <li>You need to be authenticated.</li> </ul> </li> <li> <p>Create a New Issue for your bug</p> <ul> <li>Title: A concise high level description of your bug (see some other examples in GitLab)</li> <li>Type: Issue</li> <li>Description: Choose the \"bug\" project template and fill-in the auto-generated template describing the bug.</li> <li>Labels:<ul> <li>Select the type of request: <code>type::bug</code></li> <li>If you foresee the components affected by the bug, pick the appropriate labels for them.<ul> <li>Component labels have the form <code>comp-<component-name></code>.</li> </ul> </li> <li>PLEASE: Do not set other types of labels (to be set by TSC).</li> </ul> </li> <li>PLEASE: Do not set the following fields (to be set by TSC): EPIC, Assignee, Milestone, Weight, Due Date</li> <li>Submit the Issue</li> </ul> </li> <li> <p>Interact with the TSC and the Community through the issue.</p> <ul> <li>TSC will review your reported bug and try to reproduce it. If we succeed in reproducing it, we will mark it as confirmed, and include its resolution in the development plans. Otherwise, TSC will provide questions for clarification.</li> </ul> </li> </ol>"},{"location":"features_and_bugs/#43-feature-lifecycle","title":"4.3. Feature LifeCycle","text":"<p>Once approved, a feature request could transition through the following steps:</p> <ul> <li>Approved: Feature approved by TSC; design phase can start.</li> <li>Design: Feature under design; discussing on HOW to do it.</li> <li>Development: Design approved; feature under development/implementation.</li> <li>Testing and Review: Feature implemented and under review and testing by the developers and the community.</li> <li>Completed: Testing and review completed, and feature merged.</li> <li>Abandoned: Feature abandoned.</li> </ul> <p>Important: An approved feature is not a guarantee for implementation. Implementing a feature requires resources, and resources come from the members, participants and individual contributors integrating the TFS Community, which might have prioritized the development of other features based on their own interests and the interests expressed by the LG, the TSC, and the MDGs.</p> <p>Once a Feature is mature, e.g., Testing, Review, Completed, it can be accepted for inclusion in a specific Release. This is accomplished by including the issue ticket in the respective EPIC \"ReleaseX.Y\". For instance, to see the Features included in Release X.Y, check EPIC \"ReleaseX.Y\".</p>"},{"location":"run_experiments/","title":"3. Run Experiments","text":"<p>This section walks you through the process of running experiments in TeraFlowSDN on top of a machine running MicroK8s Kubernetes platform. The guide includes the details on configuring the Python environment, some basic commands you might need, configuring the network topology, and executing different experiments.</p> <p>Note that the steps followed here are likely to work regardless of the platform where TeraFlowSDN is deployed over.</p> <p>Note also that this guide will keep growing with the new experiments and demonstrations that are being carried out involving the ETSI TeraFlowSDN controller.</p> <p>Important: The NBIs, workflows and drivers have to be considered as experimental. The configuration and monitoring capabilities they support are limited, partially implemented, or tested only with specific laboratory equipment. Use them with care.</p> <ul> <li> <p>3.1. OFC'22 Demo</p> <ul> <li>Bootstrapping of devices</li> <li>Monitoring of device endpoints</li> <li>Management of L3VPN services</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> </li> <li> <p>3.2. ECOC'22 Demo</p> <ul> <li>Disjoint DC-2-DC L2VPN Service management</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> </li> <li> <p>3.3. OECC-PSC'22 Demo (Work In Progress)</p> <ul> <li>Interdomain Slices</li> </ul> </li> <li> <p>3.4. NFV-SDN'22 Demo (Work In Progress)</p> <ul> <li>DLT-based context sharing</li> <li>DLT-based Interdomain Slices with SLAs</li> </ul> </li> </ul>"},{"location":"run_experiments/#31-ofc22-demo","title":"3.1. OFC'22 Demo","text":"<p>This functional test reproduces the live demonstration Demonstration of Zero-touch Device and L3-VPN Service Management Using the TeraFlow Cloud-native SDN Controller carried out at OFC'22 / Open access.</p> <p>The main features demonstrated are:</p> <ul> <li>Bootstrapping of devices</li> <li>Monitoring of device endpoints</li> <li>Management of L3VPN services</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> Functional test folder <p></p> <p>This functional test can be found in folder <code>./src/tests/ofc22/</code>.</p> Execute with real devices <p></p> <p>This functional test is designed to operate both with real and emulated devices. By default, emulated devices are used; however, if you have access to real devices, you can create/modify the files <code>./src/tests/ofc22/tests/Objects.py</code> and <code>./src/tests/ofc22/tests/Credentials.py</code> to point to your devices, and map to your own network topology. Otherwise, you can modify the <code>./src/tests/ofc22/tests/descriptors_emulated.json</code> that is designed to be uploaded through the WebUI instead of using the command line scripts. Note that the default scenario assumes devices R2 and R4 are always emulated, while devices R1, R3, and O1 can be configured as emulated or real devices.</p> <p>Important: The device drivers operating with real devices, e.g., OpenConfigDriver, P4Driver, and TransportApiDriver, have to be considered as experimental. The configuration and monitoring capabilities they support are limited or partially implemented/tested. Use them with care.</p> Deployment and Dependencies <p></p> <p>To run this functional test, it is assumed you have deployed a MicroK8s-based Kubernetes environment and a TeraFlowSDN controller instance as described in the Tutorial: Deployment Guide, and you configured the Python environment as described in Tutorial: Development Guide > Configure Environment > Python.</p> Access to the WebUI and Dashboard <p></p> <p>When the deployment completes, you can connect to the TeraFlowSDN WebUI and Dashboards as described in Tutorial: Deployment Guide > WebUI and Grafana Dashboards</p> <p>Notes:</p> <ul> <li>the default credentials for the Grafana Dashboiard is user/pass: <code>admin</code>/<code>admin123+</code>.</li> <li>in Grafana, you will find the L3-Monitorng in the Starred dashboards section.</li> </ul> Test execution <p></p> <p>Before executing the tests, we need to prepare a few things.</p> <p>First, you need to make sure that you have all the gRPC-generate code in your folder. To do so, run:</p> <pre><code>proto/generate_code_python.sh\n</code></pre> <p>Then, it is time to deploy TeraFlowSDN with the correct specification for this scenario. Make sure to load your deployment variables for this scenario by:</p> <pre><code>source src/tests/ofc22/deploy_specs.sh\n</code></pre> <p>Then, you need to deploy the components by running:</p> <pre><code>./deploy/all.sh\n</code></pre> <p>After the deployment is finished, you need to load the environment variables to support the execution of the tests by:</p> <pre><code>source tfs_runtime_env_vars.sh\n</code></pre> <p>To execute this functional test, four main steps needs to be carried out:</p> <ol> <li>Device bootstrapping</li> <li>L3VPN Service creation</li> <li>L3VPN Service removal</li> <li>Cleanup</li> </ol> <p>Upon the execution of each test progresses, a report will be generated indicating PASSED / FAILED / SKIPPED. If there is some error during the execution, you should see a detailed report on the error. See the troubleshooting section if needed.</p> <p>You can check the logs of the different components using the appropriate <code>scripts/show_logs_[component].sh</code> scripts after you execute each step.</p> <p>There are two ways to execute the functional tests, running all the tests with a single script or running each test independently. In the following we start with the first option, then we comment on how to run each test independently.</p> <p>Running all tests with a single script</p> <p>We have a script that executes all the steps at once. It is meant for being used to test if all components involved in this scenario are working correct. To run all the functional tests, you can run:</p> <pre><code>src/tests/ofc22/run_tests.sh\n</code></pre> <p>The following sections explain each one of the steps.</p> <p>Device bootstrapping</p> <p>This step configures some basic entities (Context and Topology), the devices, and the links in the topology. The expected results are:</p> <ul> <li>The devices to be added into the Topology.</li> <li>The devices to be pre-configured and initialized as ENABLED by the Automation component.</li> <li>The monitoring for the device ports (named as endpoints in TeraFlowSDN) to be activated and data collection to automatically start.</li> <li>The links to be added to the topology.</li> </ul> <p>To run this step, you can do it from the WebUI by uploading the file <code>./ofc22/tests/descriptors_emulated.json</code> that contains the descriptors of the contexts, topologies, devices, and links, or by executing the script:</p> <pre><code>./src/tests/ofc22/run_test_01_bootstrap.sh\n</code></pre> <p>When the bootstrapping finishes, check in the Grafana L3-Monitoring Dashboard and you should see the monitoring data being plotted and updated every 5 seconds (by default). Given that there is no service configured, you should see a 0-valued flat plot.</p> <p>In the WebUI, select the admin Context. Then, in the Devices tab you should see that 5 different emulated devices have been created and activated: 4 packet routers, and 1 optical line system controller. Besides, in the Services tab you should see that there is no service created. Note here that the emulated devices produce synthetic randomly-generated monitoring data and do not represent any particular services configured.</p> <p>L3VPN Service creation</p> <p>This step configures a new service emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the script:</p> <pre><code>./src/tests/ofc22/run_test_02_create_service.sh\n</code></pre> <p>When the script finishes, check the WebUI Services tab. You should see that two services have been created, one for the optical layer and another for the packet layer. Besides, you can check the Devices tab to see the configuration rules that have been configured in each device. In the Grafana Dashboard, given that there is now a service configured, you should see the plots with the monitored data for the device. By default, device R1-EMU is selected.</p> <p>L3VPN Service removal</p> <p>This step deconfigures the previously created services emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the script:</p> <pre><code>./src/tests/ofc22/run_test_03_delete_service.sh\n</code></pre> <p>or delete the L3NM service from the WebUI.</p> <p>When the script finishes, check the WebUI Services tab. You should see that the two services have been removed. Besides, in the Devices tab you can see that the appropriate configuration rules have been deconfigured. In the Grafana Dashboard, given that there is no service configured, you should see a 0-valued flat plot again.</p> <p>Cleanup</p> <p>This last step performs a cleanup of the scenario removing all the TeraFlowSDN entities for completeness. To run this step, execute the script:</p> <pre><code>./src/tests/ofc22/run_test_04_cleanup.sh\n</code></pre> <p>When the script finishes, check the WebUI Devices tab, you should see that the devices have been removed. Besides, in the Services tab you can see that the \"admin\" Context has no services given that that context has been removed.</p>"},{"location":"run_experiments/#32-ecoc22-demo","title":"3.2. ECOC'22 Demo","text":"<p>This functional test reproduces the experimental assessment of Experimental Demonstration of Transport Network Slicing with SLA Using the TeraFlowSDN Controller presented at ECOC'22 / IEEEXplore.</p> <p>The main features demonstrated are:</p> <ul> <li>Disjoint DC-2-DC L2VPN Service management</li> <li>Integration with ETSI OpenSourceMANO</li> </ul> Functional test folder <p></p> <p>This functional test can be found in folder <code>./src/tests/ecoc22/</code>.</p> Execute with real devices <p></p> <p>This functional test has only been tested with emulated devices; however, if you have access to real devices, you can modify the files <code>./src/tests/ecoc22/tests/Objects.py</code> and <code>./src/tests/ecoc22/tests/Credentials.py</code> to point to your devices, and map to your network topology. Otherwise, you can modify the <code>./src/tests/ecoc22/tests/descriptors_emulated.json</code> that is designed to be uploaded through the WebUI instead of using the command line scripts.</p> <p>Important: The device drivers operating with real devices, e.g., OpenConfigDriver, P4Driver, and TransportApiDriver, have to be considered as experimental. The configuration and monitoring capabilities they support are limited or partially implemented/tested. Use them with care.</p> Deployment and Dependencies <p></p> <p>To run this functional test, it is assumed you have deployed a MicroK8s-based Kubernetes environment and a TeraFlowSDN controller instance as described in the Tutorial: Deployment Guide, and you configured the Python environment as described in Tutorial: Development Guide > Configure Environment > Python.</p> Access to the WebUI <p></p> <p>When the deployment completes, you can connect to the TeraFlowSDN WebUI as described in Tutorial: Deployment Guide > WebUI and Grafana Dashboards</p> <p>Notes:</p> <ul> <li>this experiment does not make use of Monitoring, so Grafana is not used.</li> <li>the default credentials for the Grafana Dashboard is user/pass: <code>admin</code>/<code>admin123+</code>.</li> <li>this functional test does not involve the Monitoring component, so no monitoring data is plotted in Grafana.</li> </ul> Test execution <p></p> <p>Before executing the tests, we need to prepare a few things.</p> <p>First, you need to make sure that you have all the gRPC-generate code in your folder. To do so, run:</p> <pre><code>proto/generate_code_python.sh\n</code></pre> <p>Second, it is time to deploy TeraFlowSDN with the correct specification for this scenario. Make sure to load your deployment variables for this scenario by:</p> <pre><code>source src/tests/ecoc22/deploy_specs.sh\n</code></pre> <p>Then, you need to deploy the components by running:</p> <pre><code>./deploy/all.sh\n</code></pre> <p>After the deployment is finished, you need to load the environment variables to support the execution of the tests by:</p> <pre><code>source tfs_runtime_env_vars.sh\n</code></pre> <p>To execute this functional test, four main steps needs to be carried out:</p> <ol> <li>Device bootstrapping</li> <li>L2VPN Slice and Services creation</li> <li>L2VPN Slice and Services removal</li> <li>Cleanup</li> </ol> <p>Upon the execution of each test progresses, a report will be generated indicating PASSED / FAILED / SKIPPED. If there is some error during the execution, you should see a detailed report on the error. See the troubleshooting section if needed.</p> <p>You can check the logs of the different components using the appropriate <code>scripts/show_logs_[component].sh</code> scripts after you execute each step.</p> <p>Device bootstrapping</p> <p>This step configures some basic entities (Context and Topology), the devices, and the links in the topology. The expected results are:</p> <ul> <li>The devices to be added into the Topology.</li> <li>The devices to be pre-configured and initialized as ENABLED by the Automation component.</li> <li>The links to be added to the topology.</li> </ul> <p>To run this step, you can do it from the WebUI by uploading the file <code>./src/tests/ecoc22/tests/descriptors_emulated.json</code> that contains the descriptors of the contexts, topologies, devices, and links, or by executing the <code>./src/tests/ecoc22/run_test_01_bootstrap.sh</code> script.</p> <p>In the WebUI, select the admin Context. Then, in the Devices tab you should see that 5 different emulated devices have been created and activated: 4 packet routers, and 1 optical Open Line System (OLS) controller. Besides, in the Services tab you should see that there is no service created. </p> <p>L2VPN Slice and Services creation</p> <p>This step configures a new service emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the <code>./src/tests/ecoc22/run_test_02_create_service.sh</code> script.</p> <p>When the script finishes, check the WebUI Slices and Services tab. You should see that, for the connectivity service requested by MockOSM, one slice has been created, three services have been created (two for the optical layer and another for the packet layer). Note that the two services for the optical layer correspond to the primary (service_uuid ending with \":0\") and the backup (service_uuid ending with \":1\") services. Each of the services indicates the connections and sub-services that are supporting them. Besides, you can check the Devices tab to see the configuration rules that have been configured in each device.</p> <p>L2VPN Slice and Services removal</p> <p>This step deconfigures the previously created slices and services emulating the request an OSM WIM would make by means of a Mock OSM instance.</p> <p>To run this step, execute the <code>./src/tests/ecoc22/run_test_03_delete_service.sh</code> script, or delete the slice from the WebUI.</p> <p>When the script finishes, check the WebUI Slices and Services tab. You should see that the slice and the services have been removed. Besides, in the Devices tab you can see that the appropriate configuration rules have been deconfigured.</p> <p>Cleanup</p> <p>This last step performs a cleanup of the scenario removing all the TeraFlowSDN entities for completeness.</p> <p>To run this step, execute the <code>./src/tests/ecoc22/run_test_04_cleanup.sh</code> script.</p> <p>When the script finishes, check the WebUI Devices tab, you should see that the devices have been removed. Besides, in the Slices and Services tab you can see that the admin Context has no services given that that context has been removed.</p>"},{"location":"run_experiments/#33-oecc-psc22-demo-work-in-progress","title":"3.3. OECC-PSC'22 Demo (Work In Progress)","text":"<p>Page under construction.</p> <p>The main features demonstrated are:</p> <ul> <li>Interdomain Slices</li> </ul>"},{"location":"run_experiments/#34-nfv-sdn22-demo-work-in-progress","title":"3.4. NFV-SDN'22 Demo (Work In Progress)","text":"<p>Page under construction.</p> <p>The main features demonstrated are:</p> <ul> <li>DLT-based context sharing</li> <li>DLT-based Interdomain Slices with SLAs</li> </ul>"},{"location":"supported_nbis/","title":"6. Supported NBIs","text":"<p>This section summarizes the NBI connectors supported by the TeraFlowSDN controller to interoperate with OSS/BSS/NFVO on top of it.</p> <ul> <li>6.1. TFS API</li> <li>6.2. ETSI Bandwidth Management (BWM)</li> <li>6.3. IETF L2VPN Service Delivery (L2SM) [RFC8466]</li> <li>6.4. IETF L3VPN Service Delivery (L3SM) [RFC8299]</li> <li>6.5. IETF Network Topology [RFC8345]</li> <li>6.6. IETF Network Slice Service [draft-ietf-teas-ietf-network-slice-nbi-yang]</li> </ul>"},{"location":"supported_nbis/#61-tfs-apie","title":"6.1. TFS APIe","text":"<p>This NBI connector exposes the basic gRPC methods of TeraFlowSDN that enable to manage contexts, topologies, devices, links, services, slices, connections, and policies.</p> Exposed endpoints: <p></p> <p>Endpoint <code>/tfs-api/context_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the context identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/contexts</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the details of all contexts</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/dummy_contexts</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to dump contexts (including related topologies, devices, links, services, slices, and connections) in a snapshot format that can be imported directly in TeraFlowSDN WebUI.</li> <li>IMPORTANT: the resulting document is processed by WebUI in dummy mode, i.e., just to populate Context database, but not interacting with Device, Service, and Slice components.</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/topology_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the topology identifiers in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/topologies</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the topology details in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/topology/<path:topology_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific topology in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the service identifiers in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/services</code></p> <ul> <li> <p>Method: <code>GET</code></p> <ul> <li>Used to list all the service details in a context</li> </ul> </li> <li> <p>Method: <code>POST</code></p> <ul> <li>Used to create a service</li> </ul> </li> <li> <p>Method: <code>PUT</code></p> <ul> <li>Used to update a service</li> </ul> </li> <li> <p>Method: <code>DELETE</code></p> <ul> <li>Used to delete a service</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service/<path:service_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific service in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/slice_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the slice identifiers in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/slices</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the slice details in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/slice/<path:slice_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific slice in a context</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/device_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the device identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/devices</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the device details</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/device/<path:device_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific device</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/link_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the link identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/links</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the link details</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/link/<path:link_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific link</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service/<path:service_uuid>/connection_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list the connection identifiers related to a service</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/context/<path:context_uuid>/service/<path:service_uuid>/connections</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the connection details related to a service</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/connection/<path:connection_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific connection</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/policyrule_ids</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the policy rule identifiers</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/policyrules</code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to list all the policy rule details</li> </ul> </li> </ul> <p>Endpoint <code>/tfs-api/policyrule/<path:policyrule_uuid></code></p> <ul> <li>Method: <code>GET</code><ul> <li>Used to retrieve a specific policy rule</li> </ul> </li> </ul>"},{"location":"supported_nbis/#62-etsi-bandwidth-management-bwm","title":"6.2. ETSI Bandwidth Management (BWM)","text":"<p>ETSI Traffic Bandwidth Management (BWM) API (GS MEC 015)</p> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L3 connectivity service management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Proprietary Moonlight extension</li> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>ETSI Traffic Bandwidth Management (BWM) API (GS MEC 015)</li> </ul>"},{"location":"supported_nbis/#63-ietf-l2vpn-service-delivery-l2sm-rfc8466","title":"6.3. IETF L2VPN Service Delivery (L2SM) [RFC8466]","text":"<p>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</p> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L2 VPN management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>ETSI OpenSource MANO v12.1+</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</li> </ul>"},{"location":"supported_nbis/#64-ietf-l3vpn-service-delivery-l3sm-rfc8299","title":"6.4. IETF L3VPN Service Delivery (L3SM) [RFC8299]","text":"<p>IETF RFC8299: YANG Data Model for L3VPN Service Delivery</p> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L3 VPN management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Proprietary OSM extensions</li> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8299: YANG Data Model for L3VPN Service Delivery</li> </ul>"},{"location":"supported_nbis/#65-ietf-network-topology-rfc8345","title":"6.5. IETF Network Topology [RFC8345]","text":"<p>IETF RFC8345: A YANG Data Model for Network Topologies</p> <p>Documentation in progress</p> <p>This extension also features partial support for:</p> <ul> <li>IETF RFC 8795: YANG Data Model for Traffic Engineering (TE) Topologies</li> <li>IETF RFC draft-ietf-ccamp-eth-client-te-topo-yang-05: A YANG Data Model for Ethernet TE Topology</li> <li>IETF RFC draft-ietf-ccamp-client-signal-yang-10: A YANG Data Model for Transport Network Client Signals</li> </ul> Supported features: <p></p> <ul> <li>Static topology exposition</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Proprietary OSM extensions</li> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8345: A YANG Data Model for Network Topologies</li> <li>IETF RFC8795: YANG Data Model for Traffic Engineering (TE) Topologies</li> <li>IETF RFC8776: Common YANG Data Types for Traffic Engineering</li> <li>IETF RFC6991: Common YANG Data Types</li> <li>IETF draft-ietf-ccamp-eth-client-te-topo-yang-05: A YANG Data Model for Ethernet TE Topology</li> <li>IETF draft-ietf-ccamp-client-signal-yang-10: A YANG Data Model for Transport Network Client Signals</li> </ul>"},{"location":"supported_nbis/#66-ietf-network-slice-service-draft-ietf-teas-ietf-network-slice-nbi-yang","title":"6.6. IETF Network Slice Service [draft-ietf-teas-ietf-network-slice-nbi-yang]","text":"<p>IETF draft-ietf-teas-ietf-network-slice-nbi-yang: A YANG Data Model for the RFC 9543 Network Slice Service</p> <p>Important: implemented version is based on version 2 of the draft:</p> <ul> <li>draft-ietf-teas-ietf-network-slice-nbi-yang-02: IETF Network Slice Service YANG Model</li> </ul> <p>Documentation in progress</p> Supported features: <p></p> <ul> <li>L2/L3 slice management</li> </ul> Tested OSS/BSS/NFVO: <p></p> <ul> <li>Standalone script</li> </ul> Reference: <p></p> <ul> <li>IETF draft-ietf-teas-ietf-network-slice-nbi-yang-02: IETF Network Slice Service YANG Model</li> </ul>"},{"location":"supported_sbis_and_network_elements/","title":"5. Supported SBIs and Network Elements","text":"<p>This section summarizes the SBI drivers supported by the TeraFlowSDN controller to interoperate with underlying network equipment and intermediate controllers.</p> <ul> <li>5.1. Emulated</li> <li>5.2. NetConf OpenConfig</li> <li>5.3. gNMI OpenConfig</li> <li>5.4. ONF Transport API</li> <li>5.5. P4</li> <li>5.6. Infinera IPM XR</li> <li>5.7. IETF L2VPN</li> <li>5.8. IETF ACTN</li> <li>5.9. NetConf OpenConfig Optical</li> <li>5.10. Optical TFS</li> <li>5.11. MicroWave</li> </ul>"},{"location":"supported_sbis_and_network_elements/#51-emulated","title":"5.1. Emulated","text":"<p>Documentation in progress</p> <p>This driver is provided for testing and debugging purposes. It implements an accept-anything behaviour and maintains an in-memory database with configured rules. It implements support for synthetic telemetry streaming data that is activated/deactivated according to enabled/disabled device endpoints.</p> Device Type: <p></p> <ul> <li>Software Emulated within TeraFlowSDN's Device component.</li> </ul> Supported features: <p></p> <ul> <li>Configuration</li> <li>Monitoring (synthetic)</li> </ul> Tested Devices/Controllers: <p> Not applicable.</p> Reference: <p> None</p>"},{"location":"supported_sbis_and_network_elements/#52-netconf-openconfig","title":"5.2. NetConf OpenConfig","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Packet Router</li> </ul> Supported features: <p></p> <ul> <li>Configuration of interfaces, L2/L3 VPNs, ACLs</li> <li>Monitoring of interfaces through polling</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Infinera DRX-30 with ADVA NOS-OPX-B-21.5.1</li> <li>Edgecore AS7315-30X with ADVA NOS-OPX-B-21.5.1</li> </ul> Reference: <p></p> <ul> <li>IETF RFC6241: Network Configuration Protocol (NETCONF)</li> <li>OpenConfig</li> <li>OpenConfig GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#53-gnmi-openconfig","title":"5.3. gNMI OpenConfig","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Packet Router</li> </ul> Supported features: <p></p> <ul> <li>Configuration of interfaces and IPv4 network instances with static routes</li> <li>Monitoring of interfaces through telemetry streaming</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Nokia SR Linux v23.3.1</li> </ul> Reference: <p></p> <ul> <li>OpenConfig</li> <li>OpenConfig GitHub</li> <li>OpenConfig gNMI</li> <li>OpenConfig gNMI GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#54-onf-transport-api","title":"5.4. ONF Transport API","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configuration of L0 optical links</li> <li>Monitoring is not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>CTTC Open Line System controller</li> </ul> Reference: <p></p> <ul> <li>ONF Transport API</li> <li>ONF Transport API GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#55-p4","title":"5.5. P4","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configuration of L2 packet connections</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>BMV2</li> <li>Intel Tofino P4 switch</li> </ul> Reference: <p></p>"},{"location":"supported_sbis_and_network_elements/#56-infinera-ipm-xr","title":"5.6. Infinera IPM XR","text":"<p>Infinera XR Pluggables through Infinera IPM controller</p> <p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configuration of L0 optical links</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Infinera Pluggable Manager (IPM) controller</li> </ul> Reference: <p></p>"},{"location":"supported_sbis_and_network_elements/#57-ietf-l2vpn","title":"5.7. IETF L2VPN","text":"<p>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</p> <p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Discovery of underlyting topology</li> <li>Configuration of L2 VPNs</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>TeraFlowSDN as child IP controller</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8466: A YANG Data Model for Layer 2 Virtual Private Network (L2VPN) Service Delivery</li> </ul>"},{"location":"supported_sbis_and_network_elements/#58-ietf-actn","title":"5.8. IETF ACTN","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>Configure OSU Tunnels</li> <li>Configure Ethernet Transport Services</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Huawei NCE-T SDN controller</li> </ul> Reference: <p></p> <ul> <li>IETF draft-ietf-ccamp-client-signal-yang-10: A YANG Data Model for Transport Network Client Signals</li> <li>IETF draft-ietf-teas-yang-te-34: A YANG Data Model for Traffic Engineering Tunnels, Label Switched Paths and Interfaces</li> </ul>"},{"location":"supported_sbis_and_network_elements/#59-netconf-openconfig-optical","title":"5.9. NetConf OpenConfig Optical","text":"<p>NetConf - OpenConfig for Optical Devices (EXPERIMENTAL)</p> <p>WARNING: This driver is experimental and contains proprietary extensions on top of OpenConfig. Use with care.</p> <p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Optical Transponders</li> <li>Multi-granular Optical Nodes</li> </ul> Supported features: <p></p> <ul> <li>Configure L0 optical connections</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>Proprietary NetConf/OpenConfig agents</li> </ul> Reference: <p></p> <ul> <li>IETF RFC6241: Network Configuration Protocol (NETCONF)</li> <li>OpenConfig</li> <li>OpenConfig GitHub</li> </ul>"},{"location":"supported_sbis_and_network_elements/#510-optical-tfs","title":"5.10. Optical TFS","text":"<p>Documentation in progress</p> Device Type: <p></p> <ul> <li>Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>L0 optical connections</li> <li>Monitoring is not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>TeraFlowSDN as child optical controller</li> </ul> Reference: <p></p>"},{"location":"supported_sbis_and_network_elements/#511-microwave","title":"5.11. MicroWave","text":"<p>Documentation in progress</p> <p>This driver manages microwave radio links through an intermediate controller using the data model in IETF RFC8345 \"A YANG Data Model for Network Topologies\".</p> Device Type: <p></p> <ul> <li>Radio links between routers through an Intermediate Controller</li> </ul> Supported features: <p></p> <ul> <li>L2 radio links</li> <li>Monitoring not supported</li> </ul> Tested Devices/Controllers: <p></p> <ul> <li>SIAE intermediate MW controller version SM-DC 8.3.2 managing SIAE AGS20 radio terminals</li> </ul> Reference: <p></p> <ul> <li>IETF RFC8345: A YANG Data Model for Network Topologies</li> </ul>"},{"location":"supported_service_handlers/","title":"7. Supported Service Handlers","text":"<p>This section summarizes the service handlers supported by the TeraFlowSDN controller.</p> <ul> <li>7.1. L2NM Emulated</li> <li>7.2. L2NM IETF L2VPN</li> <li>7.3. L2NM NetConf OpenConfig</li> <li>7.4. L2NM P4</li> <li>7.5. L3NM Emulated</li> <li>7.6. L3NM gNMI OpenConfig</li> <li>7.7. L3NM NetConf OpenConfig</li> <li>7.8. L3NM IETF ACTN</li> <li>7.9. End-to-end Orchestrator</li> <li>7.10. Microwave</li> <li>7.11. Optical OpenConfig</li> <li>7.12. Transport API</li> <li>7.13. XR Pluggable</li> </ul>"},{"location":"supported_service_handlers/#71-l2nm-emulated","title":"7.1. L2NM Emulated","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 connectivity services using emulated driver.</p> Suported Drivers: <p></p> <ul> <li>Emulated</li> </ul>"},{"location":"supported_service_handlers/#72-l2nm-ietf-l2vpn","title":"7.2. L2NM IETF L2VPN","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 VPNs using emulated driver.</p> Suported Drivers: <p></p> <ul> <li>Emulated</li> </ul>"},{"location":"supported_service_handlers/#73-l2nm-netconf-openconfig","title":"7.3. L2NM NetConf OpenConfig","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 VPNs using NetConf/OpenConfig for packet routers/switches.</p> Suported Drivers: <p></p> <ul> <li>Packet Routers/Switches with NetConf OpenConfig</li> </ul>"},{"location":"supported_service_handlers/#74-l2nm-p4","title":"7.4. L2NM P4","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 packet forward in P4 switches.</p> Suported Drivers: <p></p> <ul> <li>P4</li> </ul>"},{"location":"supported_service_handlers/#75-l3nm-emulated","title":"7.5. L3NM Emulated","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 connectivity services using emulated driver.</p> Suported Drivers: <p></p> <ul> <li>Emulated</li> </ul>"},{"location":"supported_service_handlers/#76-l3nm-gnmi-openconfig","title":"7.6. L3NM gNMI OpenConfig","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 connectivity services using gNMI/OpenConfig for packet routers.</p> Suported Drivers: <p></p> <ul> <li>Packet Routers with gNMI OpenConfig</li> </ul>"},{"location":"supported_service_handlers/#77-l3nm-netconf-openconfig","title":"7.7. L3NM NetConf OpenConfig","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 VPNs using NetConf/OpenConfig for packet routers.</p> Suported Drivers: <p></p> <ul> <li>Packet Routers with NetConf OpenConfig</li> </ul>"},{"location":"supported_service_handlers/#78-l3nm-ietf-actn","title":"7.8. L3NM IETF ACTN","text":"<p>Documentation in progress</p> <p>Service handler to configure L3 VPNs on top of optical connections using IETF ACTN.</p> Suported Drivers: <p></p> <ul> <li>IETF ACTN</li> </ul>"},{"location":"supported_service_handlers/#79-end-to-end-orchestrator","title":"7.9. End-to-end Orchestrator","text":"<p>Documentation in progress</p> <p>WARNING: Experimental service handler to for a parent TeraFlowSDN end-to-end orchestrator to configure child TeraFlowSDN controllers acting as IP & Optical SDN controllers.</p> Suported Drivers: <p></p> <ul> <li>Optical TFS</li> <li>IETF L2VPN</li> </ul>"},{"location":"supported_service_handlers/#710-microwave","title":"7.10. Microwave","text":"<p>Documentation in progress</p> <p>Service handler to configure L2 microwave links.</p> Suported Drivers: <p></p> <ul> <li>Microwave</li> </ul>"},{"location":"supported_service_handlers/#711-optical-openconfig","title":"7.11. Optical OpenConfig","text":"<p>Documentation in progress</p> <p>WARNING: Experimental service handler to configure L0 optical connections.</p> Suported Drivers: <p></p> <ul> <li>Optical TFS</li> </ul>"},{"location":"supported_service_handlers/#712-transport-api","title":"7.12. Transport API","text":"<p>Documentation in progress</p> <p>Service handler to configure L0 optical connections through intermediate TAPI controller.</p> Suported Drivers: <p></p> <ul> <li>Transport API</li> </ul>"},{"location":"supported_service_handlers/#713-xr-pluggable","title":"7.13. XR Pluggable","text":"<p>Service handler to configure XR pluggables for L0 optical connections through intermediate Infinera IPM controller.</p> Suported Drivers: <p></p> <ul> <li>Infinera IPM XR</li> </ul>"},{"location":"troubleshooting/","title":"8. Troubleshooting","text":"<ul> <li>8.1. Release Disk Space</li> <li>8.2. Activate DEBUG mode for microservices and collect logs</li> <li>8.3. Download a snapshot of the Context database</li> </ul>"},{"location":"troubleshooting/#81-release-disk-space","title":"8.1. Release Disk Space","text":"<p>Page under construction.</p> <p>Clean images when your <code>/var/lib/docker</code> starts taking up too much space:</p> <pre><code>docker system prune -a\n</code></pre>"},{"location":"troubleshooting/#82-activate-debug-mode-for-microservices-and-collect-logs","title":"8.2. Activate DEBUG mode for microservices and collect logs","text":"<p>In some cases might happen that some component is not working or reporting errors. In those cases it makes sense to activate DEBUG mode on those components and collect the logs.</p> Activate DEBUG mode in components <p></p> <p>Before deploying the TeraFlowSDN, in the manifests folder, modify the appropriate files for the microservices to be inspected, e.g. <code>contextservice.yaml</code>, <code>deviceservice.yaml</code>, <code>serviceservice.yaml</code>, <code>pathcompservice.yaml</code>, and <code>nbiservice.yaml</code>, by changing environment variable <code>LOG_LEVEL</code> to <code>DEBUG</code>.</p> <pre><code>apiVersion: apps/v1\nkind: Deployment\n#...\nspec:\n # ...\n template:\n # ...\n spec:\n # ...\n containers:\n # ...\n - name: server\n # ...\n env:\n # ...\n - name: LOG_LEVEL\n value: \"INFO\" # change to \"DEBUG\"F\n # ...\n</code></pre> Redeploy TeraFlowSDN <p></p> <p>Redeploy TeraFlowSDN as usual using the example <code>my_deploy.sh</code> specifications or whatever file you created with your deploy specs.</p> <pre><code>source my_deploy.sh\n./deploy/all.sh\n</code></pre> <p>Wait for the deployment to finish.</p> Use TeraFlowSDN <p></p> <p>Do whatever actions you were testing and were missbehaving, such as onboarding a topology, creating a connectivity service, etc.</p> Collect log files <p></p> <p>A number of helper scripts, named as <code>show_logs_<component>.sh</code>, are provided to facilitate log collection in the scripts folder. These scripts dump, by default, the logs on the screen, but can be redirected to files when needed.</p> <p>In the following example, the logs of <code>context</code>, <code>device</code>, <code>service</code>, <code>pathcomp-frontend</code>, and <code>nbi</code> are stored in respective log files instead of the screen.</p> <pre><code>cd ~/tfs-ctrl\n./scripts/show_logs_context.sh > context.log\n./scripts/show_logs_device.sh > device.log\n./scripts/show_logs_service.sh > service.log\n./scripts/show_logs_pathcomp_frontend.sh > pathcomp_frontend.log\n./scripts/show_logs_nbi.sh > nbi.log\n</code></pre> <p>The resulting logs will be stored in the root TeraFlowSDN folder.</p>"},{"location":"troubleshooting/#83-download-a-snapshot-of-the-context-database","title":"8.3. Download a snapshot of the Context database","text":"<p>In the WebUI, there is a tab named as <code>Debug</code> that you can use to interrogate the Context database. In particular, there is a link named as <code>Dummy Contexts</code>. This link produces a JSON descriptor file containing all the contexts, topologies, devices, links, slices, services, connections, constraints, and configuration rules present in Context. The resulting file can be onboarded in a blank TeraFlowSDN instance for testing purposes.</p> <p>IMPORTANT: The Dummy Contexts feature might take few seconds to respond while it composes the reply.</p> <p>IMPORTANT: The produced file is labelled as <code>\"dummy\": true</code>; that means it is a snapshot of the database that can be loaded directly into Context. This means it does not pass through the Device/Service/Slice components to onboard the records, but it drops the records directly in Context. This is useful to investigate the content on the database when an issue arises.</p> <p>WARNING: The dump retrieves all the information in clear text! Remember to manually anonymize your sensitive data such as credentials, IP addresses, etc.</p>"},{"location":"contribute/documenting/","title":"Documenting","text":"<p>TeraFlowSDN's documentation runs on MkDocs.</p>"},{"location":"contribute/documenting/#eligibility","title":"Eligibility","text":"<p>Documenting TeraFlowSDN is limited to active contributors. So, if you:</p> <ol> <li>are an active member or participant;</li> <li>wish to contribute to it;</li> <li>you're ready!</li> </ol>"},{"location":"contribute/documenting/#system-and-structure","title":"System and Structure","text":"<p>MkDocs is a fast and simple static site generator that's geared towards building project documentation. Documentation source files are written in <code>Markdown</code>, and configured with a single <code>YAML</code> configuration file. Start by reading the introductory tutorial, then check the User Guide for more information.</p>"},{"location":"contribute/documenting/#how-does-it-work","title":"How does it work?","text":"<p>There are 2 ways to upgrade documentation published on the TFS Documentation website:</p> <ul> <li>Push any change on develop branch will force update of the develop version on the TFS Documentation website;</li> <li>Create a tag, this will create a version with the tag name on the TFS Documentation website.</li> </ul>"},{"location":"contribute/documenting/#branches","title":"Branches","text":"<p>This documentation repository has 2 protected branches:</p> <ul> <li>main: stable timeline on which tags are made;</li> <li>develop: edge timeline, also published on the TFS Documentation website.</li> </ul>"},{"location":"contribute/documenting/#structure","title":"Structure","text":"<p>In the <code>mkdocs.yml</code> file you will find the navigation structure of the documentation, there you can sections with sub-sections.</p> <p>For example:</p> <pre><code>nav:\n - 0. Home : ./index.md\n - 1. Deployment Guide: ./deployment_guide.md\n - 2. Development Guide: ./development_guide.md\n - 3. Run Experiments: ./run_experiments.md\n - 4. Feature and bugs: ./features_and_bugs.md\n - 5. Supported SBIs and Network Elements: ./supported_sbis_and_network_elements.md\n - 6. Supported NBIs: ./supported_nbis.md\n - 7. Supported Service Handlers: ./supported_service_handlers.md\n - 8. Troubleshooting: ./troubleshooting.md \n - 9. FAQ: ./faq.md \n</code></pre> <p>Please take a moment to understand the current structure of the documentations and think to update after contributing if necessary.</p>"},{"location":"contribute/documenting/#main-page","title":"Main Page","text":"<p>The page shown first is at doc/index.md. That page should be updated with the latest changes of TeraFlowSDN and should reference the version (useful shortcut is <code>{{{ documentation_version }}}</code>).</p>"},{"location":"contribute/documenting/#getting-started","title":"Getting Started","text":"<p>To contribute to TeraFlowSDN's documentation, you need to follow these easy steps:</p> <p>1) Clone the Documentation repository with:</p> <pre><code>git clone https://labs.etsi.org/rep/tfs/documentation.git\n</code></pre> <p>2) Checkout the develop branch (incoming contributions are only accepted to the develop branch):</p> <pre><code>cd ./documentation\ngit checkout develop\n</code></pre> <p>3) Setup a virtual environment:</p> <ul> <li>On Linux/macOS:</li> </ul> <pre><code>python3 -m venv venv # Linux/macOS\nsource venv/bin/activate #Linux/macOS\n</code></pre> <ul> <li>On Windows:</li> </ul> <pre><code>python -m venv venv # Windows\nvenv\\Scripts\\activate # Windows\n</code></pre> <p>4) Setup a local <code>mkdocs</code> server by installing requirements:</p> <pre><code>python -m pip install -r requirements.txt\n</code></pre> <p>4) Wait for all downloads to finish and start the local <code>mkdocs</code> server:</p> <pre><code>mkdocs serve\n</code></pre> <p>5) Document! \ud83d\ude0a</p> <p>You should always make sure that the local MkDocs server terminal is not producing any <code>INFO</code>/<code>WARNING</code> messages regarding your contributions.</p>"},{"location":"contribute/documenting/#add-documentation-during-development","title":"Add Documentation During Development","text":"<p>To update the documentation properly during development, follow those additional steps:</p> <ol> <li>Create an issue on the documentation GitLab repository;</li> <li>Create a new branch with the develop branch as a source;</li> <li>Update the documentation and any relevant parts (ie: the <code>index.md</code> with new functionalities for the latest version);</li> <li>Check if errors are not being produced by <code>mkdocs</code> locally;</li> <li>Commit and push changes to the new branch;</li> <li>Create a MR request towards develop;</li> <li>Send the request for review and approval to at least one TSC Member.</li> </ol> <p>The documentation website supports branches, so your accepted changes will be reflected to the develop branch which then becomes the release branch after each corresponding cycle.</p>"},{"location":"contribute/documenting/#release-a-new-version-of-the-documentation","title":"Release a New Version of the Documentation","text":"<p>When TeraFlowSDN code repository is ready for a new release, we need to follow these steps (made by a TSC Member):</p> <ol> <li>Create a MR from develop towards main;</li> <li>When develop is merged to main... then create a tag with the released version scheme... and you're done!</li> </ol>"}]}
\ No newline at end of file
diff --git a/public/develop/sitemap.xml b/public/develop/sitemap.xml
index a553bc4ebeb4cd7f09ad036a676d95794778b95f..7a686e81f452181ba9e510662f501dbc512f4629 100644
--- a/public/develop/sitemap.xml
+++ b/public/develop/sitemap.xml
@@ -2,42 +2,46 @@
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<url>
<loc>https://tfs.etsi.org/develop/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/deployment_guide/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/development_guide/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/faq/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/features_and_bugs/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/run_experiments/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/supported_nbis/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/supported_sbis_and_network_elements/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/supported_service_handlers/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
</url>
<url>
<loc>https://tfs.etsi.org/develop/troubleshooting/</loc>
- <lastmod>2025-01-20</lastmod>
+ <lastmod>2025-02-20</lastmod>
+ </url>
+ <url>
+ <loc>https://tfs.etsi.org/develop/contribute/documenting/</loc>
+ <lastmod>2025-02-20</lastmod>
</url>
</urlset>
\ No newline at end of file
diff --git a/public/develop/sitemap.xml.gz b/public/develop/sitemap.xml.gz
index 9bd618cf6b7d563ffd773bf1788743d54d26a212..a38465ce2b94e348e599ccc99d5d55cf8474f070 100644
Binary files a/public/develop/sitemap.xml.gz and b/public/develop/sitemap.xml.gz differ
diff --git a/public/develop/supported_nbis/index.html b/public/develop/supported_nbis/index.html
index c97922fd85ecf765c095fe613df569e0bd67f592..c6ad726deed5c6d606e0c6ed0ace2ea0fdaa0598 100644
--- a/public/develop/supported_nbis/index.html
+++ b/public/develop/supported_nbis/index.html
@@ -22,7 +22,7 @@
<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -260,6 +261,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -280,6 +282,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -300,6 +303,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -320,6 +324,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -340,6 +345,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -367,6 +373,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -378,6 +385,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -470,6 +478,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -490,6 +499,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -510,6 +520,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -533,6 +544,7 @@
+
<h1>6. Supported NBIs</h1>
<p>This section summarizes the NBI connectors supported by the TeraFlowSDN controller to interoperate with OSS/BSS/NFVO on top of it.</p>
@@ -1001,7 +1013,7 @@
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/supported_sbis_and_network_elements/index.html b/public/develop/supported_sbis_and_network_elements/index.html
index 61ec4264e13fa64a3d3c2355f6067fdb2d3c54a0..13e9088b967fe2453afe985c66d9a29f31c09d72 100644
--- a/public/develop/supported_sbis_and_network_elements/index.html
+++ b/public/develop/supported_sbis_and_network_elements/index.html
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<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -260,6 +261,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -280,6 +282,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -300,6 +303,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -320,6 +324,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -347,6 +352,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -358,6 +364,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -495,6 +502,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -515,6 +523,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -535,6 +544,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -555,6 +565,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -578,6 +589,7 @@
+
<h1>5. Supported SBIs and Network Elements</h1>
<p>This section summarizes the SBI drivers supported by the TeraFlowSDN controller to interoperate with underlying network equipment and intermediate controllers.</p>
@@ -1004,7 +1016,7 @@ None</p>
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/supported_service_handlers/index.html b/public/develop/supported_service_handlers/index.html
index 72adcf6ddb740ea43bc19affded0761fee85b62f..d37a2c3c1aea38ca6efa23524538e90a3748e2f6 100644
--- a/public/develop/supported_service_handlers/index.html
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<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -260,6 +261,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -280,6 +282,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -300,6 +303,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -320,6 +324,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -340,6 +345,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -360,6 +366,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -387,6 +394,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -398,6 +406,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -553,6 +562,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -573,6 +583,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -596,6 +607,7 @@
+
<h1>7. Supported Service Handlers</h1>
<p>This section summarizes the service handlers supported by the TeraFlowSDN controller.</p>
@@ -867,7 +879,7 @@
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>
diff --git a/public/develop/troubleshooting/index.html b/public/develop/troubleshooting/index.html
index 4bd8771bce7e7c76d6c61ef1d13a4fdc9d78f260..ab06d2e0eb5882d108edb1e6e878b76ce39d6220 100644
--- a/public/develop/troubleshooting/index.html
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@@ -22,7 +22,7 @@
<link rel="icon" href="../images/favicon.png">
- <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.5.50">
+ <meta name="generator" content="mkdocs-1.6.1, mkdocs-material-9.6.5">
@@ -30,7 +30,7 @@
- <link rel="stylesheet" href="../assets/stylesheets/main.a40c8224.min.css">
+ <link rel="stylesheet" href="../assets/stylesheets/main.8608ea7d.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.06af60db.min.css">
@@ -240,6 +240,7 @@
<span class="md-ellipsis">
0. Home
+
</span>
@@ -260,6 +261,7 @@
<span class="md-ellipsis">
1. Deployment Guide
+
</span>
@@ -280,6 +282,7 @@
<span class="md-ellipsis">
2. Development Guide
+
</span>
@@ -300,6 +303,7 @@
<span class="md-ellipsis">
3. Run Experiments
+
</span>
@@ -320,6 +324,7 @@
<span class="md-ellipsis">
4. Feature and bugs
+
</span>
@@ -340,6 +345,7 @@
<span class="md-ellipsis">
5. Supported SBIs and Network Elements
+
</span>
@@ -360,6 +366,7 @@
<span class="md-ellipsis">
6. Supported NBIs
+
</span>
@@ -380,6 +387,7 @@
<span class="md-ellipsis">
7. Supported Service Handlers
+
</span>
@@ -407,6 +415,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -418,6 +427,7 @@
<span class="md-ellipsis">
8. Troubleshooting
+
</span>
@@ -483,6 +493,7 @@
<span class="md-ellipsis">
9. FAQ
+
</span>
@@ -506,6 +517,7 @@
+
<h1>8. Troubleshooting</h1>
<ul>
@@ -722,7 +734,7 @@ In particular, there is a link named as <code>Dummy Contexts</code>. This link p
<script id="__config" type="application/json">{"base": "..", "features": ["navigation.instant", "navigation.instant.progress", "navigation.top", "navigation.footer", "navigation.path", "search", "search.highlight", "toc.integrate"], "search": "../assets/javascripts/workers/search.f8cc74c7.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}, "version": {"provider": "mike"}}</script>
- <script src="../assets/javascripts/bundle.60a45f97.min.js"></script>
+ <script src="../assets/javascripts/bundle.f1b6f286.min.js"></script>
</body>