diff --git a/static/frontend/unit/main/main.js b/static/frontend/unit/main/main.js
index d0e6fc8..6c537e3 100644
--- a/static/frontend/unit/main/main.js
+++ b/static/frontend/unit/main/main.js
@@ -1,4 +1,4 @@
-var p={PLAY_HREF:".js-exampleHref",PLAY_CONTAINER:".js-exampleContainer",EXAMPLE_INPUT:".Documentation-exampleCode",EXAMPLE_OUTPUT:".Documentation-exampleOutput",EXAMPLE_ERROR:".Documentation-exampleError",PLAY_BUTTON:".Documentation-examplePlayButton",SHARE_BUTTON:".Documentation-exampleShareButton",FORMAT_BUTTON:".Documentation-exampleFormatButton",RUN_BUTTON:".Documentation-exampleRunButton"},I=class{constructor(e){this.exampleEl=e;var t,i,s,l;this.exampleEl=e,this.anchorEl=e.querySelector("a"),this.errorEl=e.querySelector(p.EXAMPLE_ERROR),this.playButtonEl=e.querySelector(p.PLAY_BUTTON),this.shareButtonEl=e.querySelector(p.SHARE_BUTTON),this.formatButtonEl=e.querySelector(p.FORMAT_BUTTON),this.runButtonEl=e.querySelector(p.RUN_BUTTON),this.inputEl=this.makeTextArea(e.querySelector(p.EXAMPLE_INPUT)),this.outputEl=e.querySelector(p.EXAMPLE_OUTPUT),(t=this.playButtonEl)==null||t.addEventListener("click",()=>this.handleShareButtonClick()),(i=this.shareButtonEl)==null||i.addEventListener("click",()=>this.handleShareButtonClick()),(s=this.formatButtonEl)==null||s.addEventListener("click",()=>this.handleFormatButtonClick()),(l=this.runButtonEl)==null||l.addEventListener("click",()=>this.handleRunButtonClick()),!!this.inputEl&&(this.resize(),this.inputEl.addEventListener("keyup",()=>this.resize()),this.inputEl.addEventListener("keydown",n=>this.onKeydown(n)))}makeTextArea(e){var i,s;let t=document.createElement("textarea");return t.classList.add("Documentation-exampleCode","code"),t.spellcheck=!1,t.value=(i=e==null?void 0:e.textContent)!=null?i:"",(s=e==null?void 0:e.parentElement)==null||s.replaceChild(t,e),t}getAnchorHash(){var e;return(e=this.anchorEl)==null?void 0:e.hash}expand(){this.exampleEl.open=!0}resize(){var e;if((e=this.inputEl)==null?void 0:e.value){let t=(this.inputEl.value.match(/\n/g)||[]).length;this.inputEl.style.height=`${(20+t*20+12+2)/16}rem`}}onKeydown(e){e.key==="Tab"&&(document.execCommand("insertText",!1,"	"),e.preventDefault())}setInputText(e){this.inputEl&&(this.inputEl.value=e)}setOutputText(e){this.outputEl&&(this.outputEl.textContent=e)}setErrorText(e){this.errorEl&&(this.errorEl.textContent=e),this.setOutputText("An error has occurred\u2026")}handleShareButtonClick(){var t;let e="https://play.golang.org/p/";this.setOutputText("Waiting for remote server\u2026"),fetch("/play/share",{method:"POST",body:(t=this.inputEl)==null?void 0:t.value}).then(i=>i.text()).then(i=>{let s=e+i;this.setOutputText(`<a href="${s}">${s}</a>`),window.open(s)}).catch(i=>{this.setErrorText(i)})}handleFormatButtonClick(){var t,i;this.setOutputText("Waiting for remote server\u2026");let e=new FormData;e.append("body",(i=(t=this.inputEl)==null?void 0:t.value)!=null?i:""),fetch("/play/fmt",{method:"POST",body:e}).then(s=>s.json()).then(({Body:s,Error:l})=>{this.setOutputText(l||"Done."),s&&(this.setInputText(s),this.resize())}).catch(s=>{this.setErrorText(s)})}handleRunButtonClick(){var e;this.setOutputText("Waiting for remote server\u2026"),fetch("/play/compile",{method:"POST",body:JSON.stringify({body:(e=this.inputEl)==null?void 0:e.value,version:2})}).then(t=>t.json()).then(async({Events:t,Errors:i})=>{this.setOutputText(i||"");for(let s of t||[])this.setOutputText(s.Message),await new Promise(l=>setTimeout(l,s.Delay/1e6))}).catch(t=>{this.setErrorText(t)})}};function M(){let r=location.hash.match(/^#(example-.*)$/);if(r){let i=document.getElementById(r[1]);i&&(i.open=!0)}let e=[...document.querySelectorAll(p.PLAY_HREF)],t=i=>e.find(s=>s.hash===i.getAnchorHash());for(let i of document.querySelectorAll(p.PLAY_CONTAINER)){let s=new I(i),l=t(s);l?l.addEventListener("click",()=>{s.expand()}):console.warn("example href not found")}}var c=document.querySelector(".JumpDialog"),f=c==null?void 0:c.querySelector(".JumpDialog-body"),o=c==null?void 0:c.querySelector(".JumpDialog-list"),u=c==null?void 0:c.querySelector(".JumpDialog-input"),S=document.querySelector(".js-documentation"),h;function _(){let r=[];if(!!S){for(let e of S.querySelectorAll("[data-kind]"))r.push(V(e));for(let e of r)e.link.addEventListener("click",function(){c==null||c.close()});return r.sort(function(e,t){return e.lower.localeCompare(t.lower)}),r}}function V(r){var s;let e=document.createElement("a"),t=r.getAttribute("id");e.setAttribute("href","#"+t),e.setAttribute("tabindex","-1"),e.setAttribute("data-gtmc","jump to link");let i=r.getAttribute("data-kind");return{link:e,name:t!=null?t:"",kind:i!=null?i:"",lower:(s=t==null?void 0:t.toLowerCase())!=null?s:""}}var H,T=-1;function v(r){for(H=r,h||(h=_()),x(-1);o==null?void 0:o.firstChild;)o.firstChild.remove();if(r){let e=r.toLowerCase(),t=[],i=[],s=[],l=(n,a,d)=>n.name.substring(0,a)+"<b>"+n.name.substring(a,d)+"</b>"+n.name.substring(d);for(let n of h!=null?h:[]){let a=n.name.toLowerCase();if(a===e)n.link.innerHTML=l(n,0,n.name.length),t.push(n);else if(a.startsWith(e))n.link.innerHTML=l(n,0,r.length),i.push(n);else{let d=a.indexOf(e);d>-1&&(n.link.innerHTML=l(n,d,d+r.length),s.push(n))}}for(let n of t.concat(i).concat(s))o==null||o.appendChild(n.link)}else{if(!h||h.length===0){let e=document.createElement("i");e.innerHTML="There are no symbols on this page.",o==null||o.appendChild(e)}for(let e of h!=null?h:[])e.link.innerHTML=e.name+" <i>"+e.kind+"</i>",o==null||o.appendChild(e.link)}f&&(f.scrollTop=0),(h==null?void 0:h.length)&&o&&o.children.length>0&&x(0)}function x(r){let e=o==null?void 0:o.children;if(!(!e||!f)){if(T>=0&&e[T].classList.remove("JumpDialog-active"),r>=e.length&&(r=e.length-1),r>=0){e[r].classList.add("JumpDialog-active");let t=e[r].offsetTop-e[0].offsetTop,i=t+e[r].clientHeight;t<f.scrollTop?f.scrollTop=t:i>f.scrollTop+f.clientHeight&&(f.scrollTop=i-f.clientHeight)}T=r}}function O(r){if(T<0)return;let e=T+r;e<0&&(e=0),x(e)}function B(){u==null||u.addEventListener("keyup",function(){u.value.toUpperCase()!=H.toUpperCase()&&v(u.value)}),u==null||u.addEventListener("keydown",function(t){let i=38,s=40,l=13;switch(t.which){case i:O(-1),t.preventDefault();break;case s:O(1),t.preventDefault();break;case l:T>=0&&o&&(o.children[T].click(),t.preventDefault());break}});let r=document.querySelector(".ShortcutsDialog");document.addEventListener("keypress",function(t){if((c==null?void 0:c.open)||(r==null?void 0:r.open))return;let i=t.target,s=i==null?void 0:i.tagName;if(s=="INPUT"||s=="SELECT"||s=="TEXTAREA"||(i==null?void 0:i.contentEditable)=="true"||t.metaKey||t.ctrlKey)return;switch(String.fromCharCode(t.which)){case"f":case"F":t.preventDefault(),u&&(u.value=""),c==null||c.showModal(),u==null||u.focus(),v("");break;case"?":r==null||r.showModal();break}});let e=document.querySelector(".js-jumpToInput");e&&e.addEventListener("click",()=>{u&&(u.value=""),v("")})}var g=class{constructor(e){this.el=e;this.el.addEventListener("change",t=>{let i=t.target,s=i.value;i.value.startsWith("/")||(s="/"+s),window.location.href=s})}};function R(r){let e=document.createElement("label");e.classList.add("go-Label"),e.setAttribute("aria-label","Menu");let t=document.createElement("select");t.classList.add("go-Select","js-selectNav"),e.appendChild(t);let i=document.createElement("optgroup");i.label="Outline",t.appendChild(i);let s={},l;for(let n of r.treeitems){if(Number(n.depth)>4)continue;n.groupTreeitem?(l=s[n.groupTreeitem.label],l||(l=s[n.groupTreeitem.label]=document.createElement("optgroup"),l.label=n.groupTreeitem.label,t.appendChild(l))):l=i;let a=document.createElement("option");a.label=n.label,a.textContent=n.label,a.value=n.el.href.replace(window.location.origin,"").replace("/",""),l.appendChild(a)}return r.addObserver(n=>{var E;let a=n.el.hash,d=(E=t.querySelector(`[value$="${a}"]`))==null?void 0:E.value;d&&(t.value=d)},50),e}var L=class{constructor(e){this.el=e;this.handleResize=()=>{this.el.style.setProperty("--js-tree-height","100vh"),this.el.style.setProperty("--js-tree-height",this.el.clientHeight+"px")};this.treeitems=[],this.firstChars=[],this.firstTreeitem=null,this.lastTreeitem=null,this.observerCallbacks=[],this.init()}init(){this.handleResize(),window.addEventListener("resize",this.handleResize),this.findTreeItems(),this.updateVisibleTreeitems(),this.observeTargets(),this.firstTreeitem&&(this.firstTreeitem.el.tabIndex=0)}observeTargets(){this.addObserver(i=>{this.expandTreeitem(i),this.setSelected(i)});let e=new Map,t=new IntersectionObserver(i=>{for(let s of i)e.set(s.target.id,s.isIntersecting||s.intersectionRatio===1);for(let[s,l]of e)if(l){let n=this.treeitems.find(a=>{var d;return(d=a.el)==null?void 0:d.href.endsWith(`#${s}`)});if(n)for(let a of this.observerCallbacks)a(n);break}},{threshold:1,rootMargin:"-60px 0px 0px 0px"});for(let i of this.treeitems.map(s=>s.el.getAttribute("href")))if(i){let s=i.replace(window.location.origin,"").replace("/","").replace("#",""),l=document.getElementById(s);l&&t.observe(l)}}addObserver(e,t=200){this.observerCallbacks.push(J(e,t))}setFocusToNextItem(e){let t=null;for(let i=e.index+1;i<this.treeitems.length;i++){let s=this.treeitems[i];if(s.isVisible){t=s;break}}t&&this.setFocusToItem(t)}setFocusToPreviousItem(e){let t=null;for(let i=e.index-1;i>-1;i--){let s=this.treeitems[i];if(s.isVisible){t=s;break}}t&&this.setFocusToItem(t)}setFocusToParentItem(e){e.groupTreeitem&&this.setFocusToItem(e.groupTreeitem)}setFocusToFirstItem(){this.firstTreeitem&&this.setFocusToItem(this.firstTreeitem)}setFocusToLastItem(){this.lastTreeitem&&this.setFocusToItem(this.lastTreeitem)}setSelected(e){var t;for(let i of this.el.querySelectorAll('[aria-expanded="true"]'))i!==e.el&&(((t=i.nextElementSibling)==null?void 0:t.contains(e.el))||i.setAttribute("aria-expanded","false"));for(let i of this.el.querySelectorAll("[aria-selected]"))i!==e.el&&i.setAttribute("aria-selected","false");e.el.setAttribute("aria-selected","true"),this.updateVisibleTreeitems(),this.setFocusToItem(e,!1)}expandTreeitem(e){let t=e;for(;t;)t.isExpandable&&t.el.setAttribute("aria-expanded","true"),t=t.groupTreeitem;this.updateVisibleTreeitems()}expandAllSiblingItems(e){for(let t of this.treeitems)t.groupTreeitem===e.groupTreeitem&&t.isExpandable&&this.expandTreeitem(t)}collapseTreeitem(e){let t=null;e.isExpanded()?t=e:t=e.groupTreeitem,t&&(t.el.setAttribute("aria-expanded","false"),this.updateVisibleTreeitems(),this.setFocusToItem(t))}setFocusByFirstCharacter(e,t){let i,s;t=t.toLowerCase(),i=e.index+1,i===this.treeitems.length&&(i=0),s=this.getIndexFirstChars(i,t),s===-1&&(s=this.getIndexFirstChars(0,t)),s>-1&&this.setFocusToItem(this.treeitems[s])}findTreeItems(){let e=(t,i)=>{let s=i,l=t.firstElementChild;for(;l;)(l.tagName==="A"||l.tagName==="SPAN")&&(s=new N(l,this,i),this.treeitems.push(s),this.firstChars.push(s.label.substring(0,1).toLowerCase())),l.firstElementChild&&e(l,s),l=l.nextElementSibling};e(this.el,null),this.treeitems.map((t,i)=>t.index=i)}updateVisibleTreeitems(){this.firstTreeitem=this.treeitems[0];for(let e of this.treeitems){let t=e.groupTreeitem;for(e.isVisible=!0;t&&t.el!==this.el;)t.isExpanded()||(e.isVisible=!1),t=t.groupTreeitem;e.isVisible&&(this.lastTreeitem=e)}}setFocusToItem(e,t=!0){e.el.tabIndex=0,t&&e.el.focus();for(let i of this.treeitems)i!==e&&(i.el.tabIndex=-1)}getIndexFirstChars(e,t){for(let i=e;i<this.firstChars.length;i++)if(this.treeitems[i].isVisible&&t===this.firstChars[i])return i;return-1}},N=class{constructor(e,t,i){var n,a,d,E,k;e.tabIndex=-1,this.el=e,this.groupTreeitem=i,this.label=(a=(n=e.textContent)==null?void 0:n.trim())!=null?a:"",this.tree=t,this.depth=((i==null?void 0:i.depth)||0)+1,this.index=0;let s=e.parentElement;(s==null?void 0:s.tagName.toLowerCase())==="li"&&(s==null||s.setAttribute("role","none")),e.setAttribute("aria-level",this.depth+""),e.getAttribute("aria-label")&&(this.label=(E=(d=e==null?void 0:e.getAttribute("aria-label"))==null?void 0:d.trim())!=null?E:""),this.isExpandable=!1,this.isVisible=!1,this.isInGroup=!!i;let l=e.nextElementSibling;for(;l;){if(l.tagName.toLowerCase()=="ul"){let w=`${(k=i==null?void 0:i.label)!=null?k:""} nav group ${this.label}`.replace(/[\W_]+/g,"_");e.setAttribute("aria-owns",w),e.setAttribute("aria-expanded","false"),l.setAttribute("role","group"),l.setAttribute("id",w),this.isExpandable=!0;break}l=l.nextElementSibling}this.init()}init(){this.el.tabIndex=-1,this.el.getAttribute("role")||this.el.setAttribute("role","treeitem"),this.el.addEventListener("keydown",this.handleKeydown.bind(this)),this.el.addEventListener("click",this.handleClick.bind(this)),this.el.addEventListener("focus",this.handleFocus.bind(this)),this.el.addEventListener("blur",this.handleBlur.bind(this))}isExpanded(){return this.isExpandable?this.el.getAttribute("aria-expanded")==="true":!1}isSelected(){return this.el.getAttribute("aria-selected")==="true"}handleClick(e){e.target!==this.el&&e.target!==this.el.firstElementChild||(this.isExpandable&&(this.isExpanded()&&this.isSelected()?this.tree.collapseTreeitem(this):this.tree.expandTreeitem(this),e.stopPropagation()),this.tree.setSelected(this))}handleFocus(){var t;let e=this.el;this.isExpandable&&(e=(t=e.firstElementChild)!=null?t:e),e.classList.add("focus")}handleBlur(){var t;let e=this.el;this.isExpandable&&(e=(t=e.firstElementChild)!=null?t:e),e.classList.remove("focus")}handleKeydown(e){if(e.altKey||e.ctrlKey||e.metaKey)return;let t=!1;switch(e.key){case" ":case"Enter":this.isExpandable?(this.isExpanded()&&this.isSelected()?this.tree.collapseTreeitem(this):this.tree.expandTreeitem(this),t=!0):e.stopPropagation(),this.tree.setSelected(this);break;case"ArrowUp":this.tree.setFocusToPreviousItem(this),t=!0;break;case"ArrowDown":this.tree.setFocusToNextItem(this),t=!0;break;case"ArrowRight":this.isExpandable&&(this.isExpanded()?this.tree.setFocusToNextItem(this):this.tree.expandTreeitem(this)),t=!0;break;case"ArrowLeft":this.isExpandable&&this.isExpanded()?(this.tree.collapseTreeitem(this),t=!0):this.isInGroup&&(this.tree.setFocusToParentItem(this),t=!0);break;case"Home":this.tree.setFocusToFirstItem(),t=!0;break;case"End":this.tree.setFocusToLastItem(),t=!0;break;default:e.key.length===1&&e.key.match(/\S/)&&(e.key=="*"?this.tree.expandAllSiblingItems(this):this.tree.setFocusByFirstCharacter(this,e.key),t=!0);break}t&&(e.stopPropagation(),e.preventDefault())}};function J(r,e){let t;return(...i)=>{let s=()=>{t=null,r(...i)};t&&clearTimeout(t),t=setTimeout(s,e)}}var y=class{constructor(e,t){this.table=e;this.toggleAll=t;this.expandAllItems=()=>{this.toggles.map(e=>e.setAttribute("aria-expanded","true")),this.update()};this.collapseAllItems=()=>{this.toggles.map(e=>e.setAttribute("aria-expanded","false")),this.update()};this.update=()=>{this.updateVisibleItems(),setTimeout(()=>this.updateGlobalToggle())};this.rows=Array.from(e.querySelectorAll("[data-aria-controls]")),this.toggles=Array.from(this.table.querySelectorAll("[aria-expanded]")),this.setAttributes(),this.attachEventListeners(),this.update()}setAttributes(){for(let e of["data-aria-controls","data-aria-labelledby","data-id"])this.table.querySelectorAll(`[${e}]`).forEach(t=>{var i;t.setAttribute(e.replace("data-",""),(i=t.getAttribute(e))!=null?i:""),t.removeAttribute(e)})}attachEventListeners(){var e;this.rows.forEach(t=>{t.addEventListener("click",i=>{this.handleToggleClick(i)})}),(e=this.toggleAll)==null||e.addEventListener("click",()=>{this.expandAllItems()}),document.addEventListener("keydown",t=>{(t.ctrlKey||t.metaKey)&&t.key==="f"&&this.expandAllItems()})}handleToggleClick(e){let t=e.currentTarget;(t==null?void 0:t.hasAttribute("aria-expanded"))||(t=this.table.querySelector(`button[aria-controls="${t==null?void 0:t.getAttribute("aria-controls")}"]`));let i=(t==null?void 0:t.getAttribute("aria-expanded"))==="true";t==null||t.setAttribute("aria-expanded",i?"false":"true"),e.stopPropagation(),this.update()}updateVisibleItems(){this.rows.map(e=>{var s;let t=(e==null?void 0:e.getAttribute("aria-expanded"))==="true",i=(s=e==null?void 0:e.getAttribute("aria-controls"))==null?void 0:s.trimEnd().split(" ");i==null||i.map(l=>{let n=document.getElementById(`${l}`);t?(n==null||n.classList.add("visible"),n==null||n.classList.remove("hidden")):(n==null||n.classList.add("hidden"),n==null||n.classList.remove("visible"))})})}updateGlobalToggle(){if(!this.toggleAll)return;this.rows.some(t=>t.hasAttribute("aria-expanded"))&&(this.toggleAll.style.display="block"),this.toggles.some(t=>t.getAttribute("aria-expanded")==="false")?(this.toggleAll.innerText="Expand all",this.toggleAll.onclick=this.expandAllItems):(this.toggleAll.innerText="Collapse all",this.toggleAll.onclick=this.collapseAllItems)}};B();M();var P=document.querySelector(".js-expandableTable");if(P){let r=new y(P,document.querySelector(".js-expandAllDirectories"));window.location.search.includes("expand-directories")&&r.expandAllItems()}var q=document.querySelector(".js-tree");if(q){let r=new L(q),e=R(r),t=document.querySelector(".js-mainNavMobile");t&&t.firstElementChild&&(t==null||t.replaceChild(e,t.firstElementChild)),e.firstElementChild&&new g(e.firstElementChild)}var m=document.querySelector(".js-readme"),A=document.querySelector(".js-readmeContent"),F=document.querySelector(".js-readmeOutline"),b=document.querySelectorAll(".js-readmeExpand"),U=document.querySelector(".js-readmeCollapse"),C=document.querySelector(".DocNavMobile-select");m&&A&&F&&b.length&&U&&(window.location.hash.includes("readme")&&m.classList.add("UnitReadme--expanded"),C==null||C.addEventListener("change",r=>{r.target.value.startsWith("readme-")&&m.classList.add("UnitReadme--expanded")}),b.forEach(r=>r.addEventListener("click",e=>{e.preventDefault(),m.classList.add("UnitReadme--expanded"),m.scrollIntoView()})),U.addEventListener("click",r=>{r.preventDefault(),m.classList.remove("UnitReadme--expanded"),b[1]&&b[1].scrollIntoView({block:"center"})}),A.addEventListener("keyup",()=>{m.classList.add("UnitReadme--expanded")}),A.addEventListener("click",()=>{m.classList.add("UnitReadme--expanded")}),F.addEventListener("click",()=>{m.classList.add("UnitReadme--expanded")}),document.addEventListener("keydown",r=>{(r.ctrlKey||r.metaKey)&&r.key==="f"&&m.classList.add("UnitReadme--expanded")}));function D(){var t;if(!location.hash)return;let r=document.getElementById(location.hash.slice(1)),e=(t=r==null?void 0:r.parentElement)==null?void 0:t.parentElement;(e==null?void 0:e.nodeName)==="DETAILS"&&(e.open=!0)}D();window.addEventListener("hashchange",()=>D());document.querySelectorAll(".js-buildContextSelect").forEach(r=>{r.addEventListener("change",e=>{window.location.search=`?GOOS=${e.target.value}`})});
+var p={PLAY_HREF:".js-exampleHref",PLAY_CONTAINER:".js-exampleContainer",EXAMPLE_INPUT:".Documentation-exampleCode",EXAMPLE_OUTPUT:".Documentation-exampleOutput",EXAMPLE_ERROR:".Documentation-exampleError",PLAY_BUTTON:".Documentation-examplePlayButton",SHARE_BUTTON:".Documentation-exampleShareButton",FORMAT_BUTTON:".Documentation-exampleFormatButton",RUN_BUTTON:".Documentation-exampleRunButton"},I=class{constructor(e){this.exampleEl=e;var t,i,s,a;this.exampleEl=e,this.anchorEl=e.querySelector("a"),this.errorEl=e.querySelector(p.EXAMPLE_ERROR),this.playButtonEl=e.querySelector(p.PLAY_BUTTON),this.shareButtonEl=e.querySelector(p.SHARE_BUTTON),this.formatButtonEl=e.querySelector(p.FORMAT_BUTTON),this.runButtonEl=e.querySelector(p.RUN_BUTTON),this.inputEl=this.makeTextArea(e.querySelector(p.EXAMPLE_INPUT)),this.outputEl=e.querySelector(p.EXAMPLE_OUTPUT),(t=this.playButtonEl)==null||t.addEventListener("click",()=>this.handleShareButtonClick()),(i=this.shareButtonEl)==null||i.addEventListener("click",()=>this.handleShareButtonClick()),(s=this.formatButtonEl)==null||s.addEventListener("click",()=>this.handleFormatButtonClick()),(a=this.runButtonEl)==null||a.addEventListener("click",()=>this.handleRunButtonClick()),!!this.inputEl&&(this.resize(),this.inputEl.addEventListener("keyup",()=>this.resize()),this.inputEl.addEventListener("keydown",r=>this.onKeydown(r)))}makeTextArea(e){var i,s;let t=document.createElement("textarea");return t.classList.add("Documentation-exampleCode","code"),t.spellcheck=!1,t.value=(i=e==null?void 0:e.textContent)!=null?i:"",(s=e==null?void 0:e.parentElement)==null||s.replaceChild(t,e),t}getAnchorHash(){var e;return(e=this.anchorEl)==null?void 0:e.hash}expand(){this.exampleEl.open=!0}resize(){var e;if((e=this.inputEl)==null?void 0:e.value){let t=(this.inputEl.value.match(/\n/g)||[]).length;this.inputEl.style.height=`${(20+t*20+12+2)/16}rem`}}onKeydown(e){e.key==="Tab"&&(document.execCommand("insertText",!1,"	"),e.preventDefault())}setInputText(e){this.inputEl&&(this.inputEl.value=e)}setOutputText(e){this.outputEl&&(this.outputEl.textContent=e)}setErrorText(e){this.errorEl&&(this.errorEl.textContent=e),this.setOutputText("An error has occurred\u2026")}handleShareButtonClick(){var t;let e="https://play.golang.org/p/";this.setOutputText("Waiting for remote server\u2026"),fetch("/play/share",{method:"POST",body:(t=this.inputEl)==null?void 0:t.value}).then(i=>i.text()).then(i=>{let s=e+i;this.setOutputText(`<a href="${s}">${s}</a>`),window.open(s)}).catch(i=>{this.setErrorText(i)})}handleFormatButtonClick(){var t,i;this.setOutputText("Waiting for remote server\u2026");let e=new FormData;e.append("body",(i=(t=this.inputEl)==null?void 0:t.value)!=null?i:""),fetch("/play/fmt",{method:"POST",body:e}).then(s=>s.json()).then(({Body:s,Error:a})=>{this.setOutputText(a||"Done."),s&&(this.setInputText(s),this.resize())}).catch(s=>{this.setErrorText(s)})}handleRunButtonClick(){var e;this.setOutputText("Waiting for remote server\u2026"),fetch("/play/compile",{method:"POST",body:JSON.stringify({body:(e=this.inputEl)==null?void 0:e.value,version:2})}).then(t=>t.json()).then(async({Events:t,Errors:i})=>{this.setOutputText(i||"");for(let s of t||[])this.setOutputText(s.Message),await new Promise(a=>setTimeout(a,s.Delay/1e6))}).catch(t=>{this.setErrorText(t)})}};function M(){let n=location.hash.match(/^#(example-.*)$/);if(n){let i=document.getElementById(n[1]);i&&(i.open=!0)}let e=[...document.querySelectorAll(p.PLAY_HREF)],t=i=>e.find(s=>s.hash===i.getAnchorHash());for(let i of document.querySelectorAll(p.PLAY_CONTAINER)){let s=new I(i),a=t(s);a?a.addEventListener("click",()=>{s.expand()}):console.warn("example href not found")}}function S(n,e,t,i){var s;(s=window.dataLayer)!=null||(window.dataLayer=[]),typeof n=="string"?window.dataLayer.push({event:n,event_category:e,event_action:t,event_label:i}):window.dataLayer.push(n)}var H=class{constructor(){this.handlers={},document.addEventListener("keydown",e=>this.handleKeyPress(e))}on(e,t,i,s){var a,r;return(r=(a=this.handlers)[e])!=null||(a[e]=new Set),this.handlers[e].add({description:t,callback:i,...s}),this}handleKeyPress(e){var t;for(let i of(t=this.handlers[e.key.toLowerCase()])!=null?t:new Set){if(i.target&&i.target!==e.target)return;let s=e.target;if(!i.target&&((s==null?void 0:s.tagName)==="INPUT"||(s==null?void 0:s.tagName)==="SELECT"||(s==null?void 0:s.tagName)==="TEXTAREA")||(s==null?void 0:s.isContentEditable)||i.withMeta&&!(e.ctrlKey||e.metaKey)||!i.withMeta&&(e.ctrlKey||e.metaKey))return;S("keypress","hotkeys",`${e.key} pressed`,i.description),i.callback(e)}}},O=new H;var l=document.querySelector(".JumpDialog"),f=l==null?void 0:l.querySelector(".JumpDialog-body"),d=l==null?void 0:l.querySelector(".JumpDialog-list"),u=l==null?void 0:l.querySelector(".JumpDialog-input"),B=document.querySelector(".js-documentation"),h;function J(){let n=[];if(!!B){for(let e of B.querySelectorAll("[data-kind]"))n.push($(e));for(let e of n)e.link.addEventListener("click",function(){l==null||l.close()});return n.sort(function(e,t){return e.lower.localeCompare(t.lower)}),n}}function $(n){var s;let e=document.createElement("a"),t=n.getAttribute("id");e.setAttribute("href","#"+t),e.setAttribute("tabindex","-1"),e.setAttribute("data-gtmc","jump to link");let i=n.getAttribute("data-kind");return{link:e,name:t!=null?t:"",kind:i!=null?i:"",lower:(s=t==null?void 0:t.toLowerCase())!=null?s:""}}var R,T=-1;function v(n){for(R=n,h||(h=J()),g(-1);d==null?void 0:d.firstChild;)d.firstChild.remove();if(n){let e=n.toLowerCase(),t=[],i=[],s=[],a=(r,o,c)=>r.name.substring(0,o)+"<b>"+r.name.substring(o,c)+"</b>"+r.name.substring(c);for(let r of h!=null?h:[]){let o=r.name.toLowerCase();if(o===e)r.link.innerHTML=a(r,0,r.name.length),t.push(r);else if(o.startsWith(e))r.link.innerHTML=a(r,0,n.length),i.push(r);else{let c=o.indexOf(e);c>-1&&(r.link.innerHTML=a(r,c,c+n.length),s.push(r))}}for(let r of t.concat(i).concat(s))d==null||d.appendChild(r.link)}else{if(!h||h.length===0){let e=document.createElement("i");e.innerHTML="There are no symbols on this page.",d==null||d.appendChild(e)}for(let e of h!=null?h:[])e.link.innerHTML=e.name+" <i>"+e.kind+"</i>",d==null||d.appendChild(e.link)}f&&(f.scrollTop=0),(h==null?void 0:h.length)&&d&&d.children.length>0&&g(0)}function g(n){let e=d==null?void 0:d.children;if(!(!e||!f)){if(T>=0&&e[T].classList.remove("JumpDialog-active"),n>=e.length&&(n=e.length-1),n>=0){e[n].classList.add("JumpDialog-active");let t=e[n].offsetTop-e[0].offsetTop,i=t+e[n].clientHeight;t<f.scrollTop?f.scrollTop=t:i>f.scrollTop+f.clientHeight&&(f.scrollTop=i-f.clientHeight)}T=n}}function N(n){if(T<0)return;let e=T+n;e<0&&(e=0),g(e)}function P(){u==null||u.addEventListener("keyup",function(){u.value.toUpperCase()!=R.toUpperCase()&&v(u.value)}),u==null||u.addEventListener("keydown",function(t){let i=38,s=40,a=13;switch(t.which){case i:N(-1),t.preventDefault();break;case s:N(1),t.preventDefault();break;case a:T>=0&&d&&(d.children[T].click(),t.preventDefault());break}});let n=document.querySelector(".ShortcutsDialog");O.on("f","open jump to modal",t=>{(l==null?void 0:l.open)||(n==null?void 0:n.open)||(t.preventDefault(),u&&(u.value=""),l==null||l.showModal(),u==null||u.focus(),v(""))}).on("?","open shortcuts modal",()=>{(l==null?void 0:l.open)||(n==null?void 0:n.open)||n==null||n.showModal()});let e=document.querySelector(".js-jumpToInput");e&&e.addEventListener("click",()=>{u&&(u.value=""),v("")})}var x=class{constructor(e){this.el=e;this.el.addEventListener("change",t=>{let i=t.target,s=i.value;i.value.startsWith("/")||(s="/"+s),window.location.href=s})}};function q(n){let e=document.createElement("label");e.classList.add("go-Label"),e.setAttribute("aria-label","Menu");let t=document.createElement("select");t.classList.add("go-Select","js-selectNav"),e.appendChild(t);let i=document.createElement("optgroup");i.label="Outline",t.appendChild(i);let s={},a;for(let r of n.treeitems){if(Number(r.depth)>4)continue;r.groupTreeitem?(a=s[r.groupTreeitem.label],a||(a=s[r.groupTreeitem.label]=document.createElement("optgroup"),a.label=r.groupTreeitem.label,t.appendChild(a))):a=i;let o=document.createElement("option");o.label=r.label,o.textContent=r.label,o.value=r.el.href.replace(window.location.origin,"").replace("/",""),a.appendChild(o)}return n.addObserver(r=>{var E;let o=r.el.hash,c=(E=t.querySelector(`[value$="${o}"]`))==null?void 0:E.value;c&&(t.value=c)},50),e}var y=class{constructor(e){this.el=e;this.handleResize=()=>{this.el.style.setProperty("--js-tree-height","100vh"),this.el.style.setProperty("--js-tree-height",this.el.clientHeight+"px")};this.treeitems=[],this.firstChars=[],this.firstTreeitem=null,this.lastTreeitem=null,this.observerCallbacks=[],this.init()}init(){this.handleResize(),window.addEventListener("resize",this.handleResize),this.findTreeItems(),this.updateVisibleTreeitems(),this.observeTargets(),this.firstTreeitem&&(this.firstTreeitem.el.tabIndex=0)}observeTargets(){this.addObserver(i=>{this.expandTreeitem(i),this.setSelected(i)});let e=new Map,t=new IntersectionObserver(i=>{for(let s of i)e.set(s.target.id,s.isIntersecting||s.intersectionRatio===1);for(let[s,a]of e)if(a){let r=this.treeitems.find(o=>{var c;return(c=o.el)==null?void 0:c.href.endsWith(`#${s}`)});if(r)for(let o of this.observerCallbacks)o(r);break}},{threshold:1,rootMargin:"-60px 0px 0px 0px"});for(let i of this.treeitems.map(s=>s.el.getAttribute("href")))if(i){let s=i.replace(window.location.origin,"").replace("/","").replace("#",""),a=document.getElementById(s);a&&t.observe(a)}}addObserver(e,t=200){this.observerCallbacks.push(G(e,t))}setFocusToNextItem(e){let t=null;for(let i=e.index+1;i<this.treeitems.length;i++){let s=this.treeitems[i];if(s.isVisible){t=s;break}}t&&this.setFocusToItem(t)}setFocusToPreviousItem(e){let t=null;for(let i=e.index-1;i>-1;i--){let s=this.treeitems[i];if(s.isVisible){t=s;break}}t&&this.setFocusToItem(t)}setFocusToParentItem(e){e.groupTreeitem&&this.setFocusToItem(e.groupTreeitem)}setFocusToFirstItem(){this.firstTreeitem&&this.setFocusToItem(this.firstTreeitem)}setFocusToLastItem(){this.lastTreeitem&&this.setFocusToItem(this.lastTreeitem)}setSelected(e){var t;for(let i of this.el.querySelectorAll('[aria-expanded="true"]'))i!==e.el&&(((t=i.nextElementSibling)==null?void 0:t.contains(e.el))||i.setAttribute("aria-expanded","false"));for(let i of this.el.querySelectorAll("[aria-selected]"))i!==e.el&&i.setAttribute("aria-selected","false");e.el.setAttribute("aria-selected","true"),this.updateVisibleTreeitems(),this.setFocusToItem(e,!1)}expandTreeitem(e){let t=e;for(;t;)t.isExpandable&&t.el.setAttribute("aria-expanded","true"),t=t.groupTreeitem;this.updateVisibleTreeitems()}expandAllSiblingItems(e){for(let t of this.treeitems)t.groupTreeitem===e.groupTreeitem&&t.isExpandable&&this.expandTreeitem(t)}collapseTreeitem(e){let t=null;e.isExpanded()?t=e:t=e.groupTreeitem,t&&(t.el.setAttribute("aria-expanded","false"),this.updateVisibleTreeitems(),this.setFocusToItem(t))}setFocusByFirstCharacter(e,t){let i,s;t=t.toLowerCase(),i=e.index+1,i===this.treeitems.length&&(i=0),s=this.getIndexFirstChars(i,t),s===-1&&(s=this.getIndexFirstChars(0,t)),s>-1&&this.setFocusToItem(this.treeitems[s])}findTreeItems(){let e=(t,i)=>{let s=i,a=t.firstElementChild;for(;a;)(a.tagName==="A"||a.tagName==="SPAN")&&(s=new F(a,this,i),this.treeitems.push(s),this.firstChars.push(s.label.substring(0,1).toLowerCase())),a.firstElementChild&&e(a,s),a=a.nextElementSibling};e(this.el,null),this.treeitems.map((t,i)=>t.index=i)}updateVisibleTreeitems(){this.firstTreeitem=this.treeitems[0];for(let e of this.treeitems){let t=e.groupTreeitem;for(e.isVisible=!0;t&&t.el!==this.el;)t.isExpanded()||(e.isVisible=!1),t=t.groupTreeitem;e.isVisible&&(this.lastTreeitem=e)}}setFocusToItem(e,t=!0){e.el.tabIndex=0,t&&e.el.focus();for(let i of this.treeitems)i!==e&&(i.el.tabIndex=-1)}getIndexFirstChars(e,t){for(let i=e;i<this.firstChars.length;i++)if(this.treeitems[i].isVisible&&t===this.firstChars[i])return i;return-1}},F=class{constructor(e,t,i){var r,o,c,E,k;e.tabIndex=-1,this.el=e,this.groupTreeitem=i,this.label=(o=(r=e.textContent)==null?void 0:r.trim())!=null?o:"",this.tree=t,this.depth=((i==null?void 0:i.depth)||0)+1,this.index=0;let s=e.parentElement;(s==null?void 0:s.tagName.toLowerCase())==="li"&&(s==null||s.setAttribute("role","none")),e.setAttribute("aria-level",this.depth+""),e.getAttribute("aria-label")&&(this.label=(E=(c=e==null?void 0:e.getAttribute("aria-label"))==null?void 0:c.trim())!=null?E:""),this.isExpandable=!1,this.isVisible=!1,this.isInGroup=!!i;let a=e.nextElementSibling;for(;a;){if(a.tagName.toLowerCase()=="ul"){let C=`${(k=i==null?void 0:i.label)!=null?k:""} nav group ${this.label}`.replace(/[\W_]+/g,"_");e.setAttribute("aria-owns",C),e.setAttribute("aria-expanded","false"),a.setAttribute("role","group"),a.setAttribute("id",C),this.isExpandable=!0;break}a=a.nextElementSibling}this.init()}init(){this.el.tabIndex=-1,this.el.getAttribute("role")||this.el.setAttribute("role","treeitem"),this.el.addEventListener("keydown",this.handleKeydown.bind(this)),this.el.addEventListener("click",this.handleClick.bind(this)),this.el.addEventListener("focus",this.handleFocus.bind(this)),this.el.addEventListener("blur",this.handleBlur.bind(this))}isExpanded(){return this.isExpandable?this.el.getAttribute("aria-expanded")==="true":!1}isSelected(){return this.el.getAttribute("aria-selected")==="true"}handleClick(e){e.target!==this.el&&e.target!==this.el.firstElementChild||(this.isExpandable&&(this.isExpanded()&&this.isSelected()?this.tree.collapseTreeitem(this):this.tree.expandTreeitem(this),e.stopPropagation()),this.tree.setSelected(this))}handleFocus(){var t;let e=this.el;this.isExpandable&&(e=(t=e.firstElementChild)!=null?t:e),e.classList.add("focus")}handleBlur(){var t;let e=this.el;this.isExpandable&&(e=(t=e.firstElementChild)!=null?t:e),e.classList.remove("focus")}handleKeydown(e){if(e.altKey||e.ctrlKey||e.metaKey)return;let t=!1;switch(e.key){case" ":case"Enter":this.isExpandable?(this.isExpanded()&&this.isSelected()?this.tree.collapseTreeitem(this):this.tree.expandTreeitem(this),t=!0):e.stopPropagation(),this.tree.setSelected(this);break;case"ArrowUp":this.tree.setFocusToPreviousItem(this),t=!0;break;case"ArrowDown":this.tree.setFocusToNextItem(this),t=!0;break;case"ArrowRight":this.isExpandable&&(this.isExpanded()?this.tree.setFocusToNextItem(this):this.tree.expandTreeitem(this)),t=!0;break;case"ArrowLeft":this.isExpandable&&this.isExpanded()?(this.tree.collapseTreeitem(this),t=!0):this.isInGroup&&(this.tree.setFocusToParentItem(this),t=!0);break;case"Home":this.tree.setFocusToFirstItem(),t=!0;break;case"End":this.tree.setFocusToLastItem(),t=!0;break;default:e.key.length===1&&e.key.match(/\S/)&&(e.key=="*"?this.tree.expandAllSiblingItems(this):this.tree.setFocusByFirstCharacter(this,e.key),t=!0);break}t&&(e.stopPropagation(),e.preventDefault())}};function G(n,e){let t;return(...i)=>{let s=()=>{t=null,n(...i)};t&&clearTimeout(t),t=setTimeout(s,e)}}var L=class{constructor(e,t){this.table=e;this.toggleAll=t;this.expandAllItems=()=>{this.toggles.map(e=>e.setAttribute("aria-expanded","true")),this.update()};this.collapseAllItems=()=>{this.toggles.map(e=>e.setAttribute("aria-expanded","false")),this.update()};this.update=()=>{this.updateVisibleItems(),setTimeout(()=>this.updateGlobalToggle())};this.rows=Array.from(e.querySelectorAll("[data-aria-controls]")),this.toggles=Array.from(this.table.querySelectorAll("[aria-expanded]")),this.setAttributes(),this.attachEventListeners(),this.update()}setAttributes(){for(let e of["data-aria-controls","data-aria-labelledby","data-id"])this.table.querySelectorAll(`[${e}]`).forEach(t=>{var i;t.setAttribute(e.replace("data-",""),(i=t.getAttribute(e))!=null?i:""),t.removeAttribute(e)})}attachEventListeners(){var e;this.rows.forEach(t=>{t.addEventListener("click",i=>{this.handleToggleClick(i)})}),(e=this.toggleAll)==null||e.addEventListener("click",()=>{this.expandAllItems()}),document.addEventListener("keydown",t=>{(t.ctrlKey||t.metaKey)&&t.key==="f"&&this.expandAllItems()})}handleToggleClick(e){let t=e.currentTarget;(t==null?void 0:t.hasAttribute("aria-expanded"))||(t=this.table.querySelector(`button[aria-controls="${t==null?void 0:t.getAttribute("aria-controls")}"]`));let i=(t==null?void 0:t.getAttribute("aria-expanded"))==="true";t==null||t.setAttribute("aria-expanded",i?"false":"true"),e.stopPropagation(),this.update()}updateVisibleItems(){this.rows.map(e=>{var s;let t=(e==null?void 0:e.getAttribute("aria-expanded"))==="true",i=(s=e==null?void 0:e.getAttribute("aria-controls"))==null?void 0:s.trimEnd().split(" ");i==null||i.map(a=>{let r=document.getElementById(`${a}`);t?(r==null||r.classList.add("visible"),r==null||r.classList.remove("hidden")):(r==null||r.classList.add("hidden"),r==null||r.classList.remove("visible"))})})}updateGlobalToggle(){if(!this.toggleAll)return;this.rows.some(t=>t.hasAttribute("aria-expanded"))&&(this.toggleAll.style.display="block"),this.toggles.some(t=>t.getAttribute("aria-expanded")==="false")?(this.toggleAll.innerText="Expand all",this.toggleAll.onclick=this.expandAllItems):(this.toggleAll.innerText="Collapse all",this.toggleAll.onclick=this.collapseAllItems)}};P();M();var U=document.querySelector(".js-expandableTable");if(U){let n=new L(U,document.querySelector(".js-expandAllDirectories"));window.location.search.includes("expand-directories")&&n.expandAllItems()}var _=document.querySelector(".js-tree");if(_){let n=new y(_),e=q(n),t=document.querySelector(".js-mainNavMobile");t&&t.firstElementChild&&(t==null||t.replaceChild(e,t.firstElementChild)),e.firstElementChild&&new x(e.firstElementChild)}var m=document.querySelector(".js-readme"),A=document.querySelector(".js-readmeContent"),K=document.querySelector(".js-readmeOutline"),b=document.querySelectorAll(".js-readmeExpand"),D=document.querySelector(".js-readmeCollapse"),w=document.querySelector(".DocNavMobile-select");m&&A&&K&&b.length&&D&&(window.location.hash.includes("readme")&&m.classList.add("UnitReadme--expanded"),w==null||w.addEventListener("change",n=>{n.target.value.startsWith("readme-")&&m.classList.add("UnitReadme--expanded")}),b.forEach(n=>n.addEventListener("click",e=>{e.preventDefault(),m.classList.add("UnitReadme--expanded"),m.scrollIntoView()})),D.addEventListener("click",n=>{n.preventDefault(),m.classList.remove("UnitReadme--expanded"),b[1]&&b[1].scrollIntoView({block:"center"})}),A.addEventListener("keyup",()=>{m.classList.add("UnitReadme--expanded")}),A.addEventListener("click",()=>{m.classList.add("UnitReadme--expanded")}),K.addEventListener("click",()=>{m.classList.add("UnitReadme--expanded")}),document.addEventListener("keydown",n=>{(n.ctrlKey||n.metaKey)&&n.key==="f"&&m.classList.add("UnitReadme--expanded")}));function V(){var t;if(!location.hash)return;let n=document.getElementById(location.hash.slice(1)),e=(t=n==null?void 0:n.parentElement)==null?void 0:t.parentElement;(e==null?void 0:e.nodeName)==="DETAILS"&&(e.open=!0)}V();window.addEventListener("hashchange",()=>V());document.querySelectorAll(".js-buildContextSelect").forEach(n=>{n.addEventListener("change",e=>{window.location.search=`?GOOS=${e.target.value}`})});
 /*!
  * @license
  * Copyright 2019-2020 The Go Authors. All rights reserved.
diff --git a/static/frontend/unit/main/main.js.map b/static/frontend/unit/main/main.js.map
index ba96971..08444f0 100644
--- a/static/frontend/unit/main/main.js.map
+++ b/static/frontend/unit/main/main.js.map
@@ -1,7 +1,7 @@
 {
   "version": 3,
-  "sources": ["../../../shared/playground/playground.ts", "../../../shared/jump/jump.ts", "../../../shared/outline/select.ts", "../../../shared/outline/tree.ts", "../../../shared/table/table.ts", "main.ts"],
-  "sourcesContent": ["/*!\n * @license\n * Copyright 2021 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// This file implements the playground implementation of the documentation\n// page. The playground involves a \"play\" button that allows you to open up\n// a new link to play.golang.org using the example code.\n\n// The CSS is in static/frontend/unit/main/_doc.css\n\n/**\n * CSS classes used by PlaygroundExampleController\n */\nconst PlayExampleClassName = {\n  PLAY_HREF: '.js-exampleHref',\n  PLAY_CONTAINER: '.js-exampleContainer',\n  EXAMPLE_INPUT: '.Documentation-exampleCode',\n  EXAMPLE_OUTPUT: '.Documentation-exampleOutput',\n  EXAMPLE_ERROR: '.Documentation-exampleError',\n  PLAY_BUTTON: '.Documentation-examplePlayButton',\n  SHARE_BUTTON: '.Documentation-exampleShareButton',\n  FORMAT_BUTTON: '.Documentation-exampleFormatButton',\n  RUN_BUTTON: '.Documentation-exampleRunButton',\n};\n\n/**\n * This controller enables playground examples to expand their dropdown or\n * generate shareable Go Playground URLs.\n */\nexport class PlaygroundExampleController {\n  /**\n   * The anchor tag used to identify the container with an example href.\n   * There is only one in an example container div.\n   */\n  private readonly anchorEl: HTMLAnchorElement | null;\n\n  /**\n   * The error element\n   */\n  private readonly errorEl: Element | null;\n\n  /**\n   * Buttons that redirect to an example's playground, this element\n   * only exists in executable examples.\n   */\n  private readonly playButtonEl: Element | null;\n  private readonly shareButtonEl: Element | null;\n\n  /**\n   * Button that formats the code in an example's playground.\n   */\n  private readonly formatButtonEl: Element | null;\n\n  /**\n   * Button that runs the code in an example's playground, this element\n   * only exists in executable examples.\n   */\n  private readonly runButtonEl: Element | null;\n\n  /**\n   * The executable code of an example.\n   */\n  private readonly inputEl: HTMLTextAreaElement | null;\n\n  /**\n   * The output of the given example code. This only exists if the\n   * author of the package provides an output for this example.\n   */\n  private readonly outputEl: Element | null;\n\n  /**\n   * @param exampleEl The div that contains playground content for the given example.\n   */\n  constructor(private readonly exampleEl: HTMLDetailsElement) {\n    this.exampleEl = exampleEl;\n    this.anchorEl = exampleEl.querySelector('a');\n    this.errorEl = exampleEl.querySelector(PlayExampleClassName.EXAMPLE_ERROR);\n    this.playButtonEl = exampleEl.querySelector(PlayExampleClassName.PLAY_BUTTON);\n    this.shareButtonEl = exampleEl.querySelector(PlayExampleClassName.SHARE_BUTTON);\n    this.formatButtonEl = exampleEl.querySelector(PlayExampleClassName.FORMAT_BUTTON);\n    this.runButtonEl = exampleEl.querySelector(PlayExampleClassName.RUN_BUTTON);\n    this.inputEl = this.makeTextArea(exampleEl.querySelector(PlayExampleClassName.EXAMPLE_INPUT));\n    this.outputEl = exampleEl.querySelector(PlayExampleClassName.EXAMPLE_OUTPUT);\n\n    // This is legacy listener to be replaced the listener for shareButtonEl.\n    this.playButtonEl?.addEventListener('click', () => this.handleShareButtonClick());\n    this.shareButtonEl?.addEventListener('click', () => this.handleShareButtonClick());\n    this.formatButtonEl?.addEventListener('click', () => this.handleFormatButtonClick());\n    this.runButtonEl?.addEventListener('click', () => this.handleRunButtonClick());\n\n    if (!this.inputEl) return;\n\n    this.resize();\n    this.inputEl.addEventListener('keyup', () => this.resize());\n    this.inputEl.addEventListener('keydown', e => this.onKeydown(e));\n  }\n\n  /**\n   * Replace the pre element with a textarea. The examples are initially rendered\n   * as pre elements so they're fully visible when JS is disabled.\n   */\n  makeTextArea(el: Element | null): HTMLTextAreaElement {\n    const t = document.createElement('textarea');\n    t.classList.add('Documentation-exampleCode', 'code');\n    t.spellcheck = false;\n    t.value = el?.textContent ?? '';\n    el?.parentElement?.replaceChild(t, el);\n    return t;\n  }\n\n  /**\n   * Retrieve the hash value of the anchor element.\n   */\n  getAnchorHash(): string | undefined {\n    return this.anchorEl?.hash;\n  }\n\n  /**\n   * Expands the current playground example.\n   */\n  expand(): void {\n    this.exampleEl.open = true;\n  }\n\n  /**\n   * Resizes the input element to accomodate the amount of text present.\n   */\n  private resize(): void {\n    if (this.inputEl?.value) {\n      const numLineBreaks = (this.inputEl.value.match(/\\n/g) || []).length;\n      // min-height + lines x line-height + padding + border\n      this.inputEl.style.height = `${(20 + numLineBreaks * 20 + 12 + 2) / 16}rem`;\n    }\n  }\n\n  /**\n   * Handler to override keyboard behavior in the playground's\n   * textarea element.\n   *\n   * Tab key inserts tabs into the example playground instead of\n   * switching to the next interactive element.\n   * @param e input element keyboard event.\n   */\n  private onKeydown(e: KeyboardEvent) {\n    if (e.key === 'Tab') {\n      document.execCommand('insertText', false, '\\t');\n      e.preventDefault();\n    }\n  }\n\n  /**\n   * Changes the text of the example's input box.\n   */\n  private setInputText(output: string) {\n    if (this.inputEl) {\n      this.inputEl.value = output;\n    }\n  }\n\n  /**\n   * Changes the text of the example's output box.\n   */\n  private setOutputText(output: string) {\n    if (this.outputEl) {\n      this.outputEl.textContent = output;\n    }\n  }\n\n  /**\n   * Sets the error message text and overwrites\n   * output box to indicate a failed response.\n   */\n  private setErrorText(err: string) {\n    if (this.errorEl) {\n      this.errorEl.textContent = err;\n    }\n    this.setOutputText('An error has occurred\u2026');\n  }\n\n  /**\n   * Opens a new window to play.golang.org using the\n   * example snippet's code in the playground.\n   */\n  private handleShareButtonClick() {\n    const PLAYGROUND_BASE_URL = 'https://play.golang.org/p/';\n\n    this.setOutputText('Waiting for remote server\u2026');\n\n    fetch('/play/share', {\n      method: 'POST',\n      body: this.inputEl?.value,\n    })\n      .then(res => res.text())\n      .then(shareId => {\n        const href = PLAYGROUND_BASE_URL + shareId;\n        this.setOutputText(`<a href=\"${href}\">${href}</a>`);\n        window.open(href);\n      })\n      .catch(err => {\n        this.setErrorText(err);\n      });\n  }\n\n  /**\n   * Runs gofmt on the example snippet in the playground.\n   */\n  private handleFormatButtonClick() {\n    this.setOutputText('Waiting for remote server\u2026');\n    const body = new FormData();\n    body.append('body', this.inputEl?.value ?? '');\n\n    fetch('/play/fmt', {\n      method: 'POST',\n      body: body,\n    })\n      .then(res => res.json())\n      .then(({ Body, Error }) => {\n        this.setOutputText(Error || 'Done.');\n        if (Body) {\n          this.setInputText(Body);\n          this.resize();\n        }\n      })\n      .catch(err => {\n        this.setErrorText(err);\n      });\n  }\n\n  /**\n   * Runs the code snippet in the example playground.\n   */\n  private handleRunButtonClick() {\n    this.setOutputText('Waiting for remote server\u2026');\n\n    fetch('/play/compile', {\n      method: 'POST',\n      body: JSON.stringify({ body: this.inputEl?.value, version: 2 }),\n    })\n      .then(res => res.json())\n      .then(async ({ Events, Errors }) => {\n        this.setOutputText(Errors || '');\n        for (const e of Events || []) {\n          this.setOutputText(e.Message);\n          await new Promise(resolve => setTimeout(resolve, e.Delay / 1000000));\n        }\n      })\n      .catch(err => {\n        this.setErrorText(err);\n      });\n  }\n}\n\nexport function initPlaygrounds(): void {\n  const exampleHashRegex = location.hash.match(/^#(example-.*)$/);\n  if (exampleHashRegex) {\n    const exampleHashEl = document.getElementById(exampleHashRegex[1]) as HTMLDetailsElement;\n    if (exampleHashEl) {\n      exampleHashEl.open = true;\n    }\n  }\n\n  // We use a spread operator to convert a nodelist into an array of elements.\n  const exampleHrefs = [\n    ...document.querySelectorAll<HTMLAnchorElement>(PlayExampleClassName.PLAY_HREF),\n  ];\n\n  /**\n   * Sometimes exampleHrefs and playContainers are in different order, so we\n   * find an exampleHref from a common hash.\n   * @param playContainer - playground container\n   */\n  const findExampleHash = (playContainer: PlaygroundExampleController) =>\n    exampleHrefs.find(ex => {\n      return ex.hash === playContainer.getAnchorHash();\n    });\n\n  for (const el of document.querySelectorAll(PlayExampleClassName.PLAY_CONTAINER)) {\n    // There should be the same amount of hrefs referencing examples as example containers.\n    const playContainer = new PlaygroundExampleController(el as HTMLDetailsElement);\n    const exampleHref = findExampleHash(playContainer);\n    if (exampleHref) {\n      exampleHref.addEventListener('click', () => {\n        playContainer.expand();\n      });\n    } else {\n      console.warn('example href not found');\n    }\n  }\n}\n", "/*!\n * @license\n * Copyright 2019-2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// This file implements the behavior of the \"jump to symbol\" dialog for Go\n// package documentation, as well as the simple dialog that displays keyboard\n// shortcuts.\n\n// The DOM for the dialogs is at the bottom of static/frontend/unit/main/_modals.tmpl.\n// The CSS is in static/frontend/unit/main/_modals.css.\n\n// The dialog is activated by pressing the 'f' key. It presents a list\n// (#JumpDialog-list) of all Go symbols displayed in the documentation.\n// Entering text in the dialog's text box (#JumpDialog-filter) restricts the\n// list to symbols containing the text. Clicking on an symbol jumps to\n// its documentation.\n\n// This code is based on\n// https://go.googlesource.com/gddo/+/refs/heads/master/gddo-server/assets/site.js.\n// It was modified to remove the dependence on jquery and bootstrap.\n\nconst jumpDialog = document.querySelector<HTMLDialogElement>('.JumpDialog');\nconst jumpBody = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-body');\nconst jumpList = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-list');\nconst jumpFilter = jumpDialog?.querySelector<HTMLInputElement>('.JumpDialog-input');\nconst doc = document.querySelector<HTMLDivElement>('.js-documentation');\n\ninterface JumpListItem {\n  link: HTMLAnchorElement;\n  name: string;\n  kind: string;\n  lower: string;\n}\n\nlet jumpListItems: JumpListItem[] | undefined; // All the symbols in the doc; computed only once.\n\n// collectJumpListItems returns a list of items, one for each symbol in the\n// documentation on the current page.\n//\n// It uses the data-kind attribute generated in the documentation HTML to find\n// the symbols and their id attributes.\n//\n// If there are no data-kind attributes, then we have older doc; fall back to\n// a less precise method.\nfunction collectJumpListItems() {\n  const items = [];\n  if (!doc) return;\n  for (const el of doc.querySelectorAll('[data-kind]')) {\n    items.push(newJumpListItem(el));\n  }\n\n  // Clicking on any of the links closes the dialog.\n  for (const item of items) {\n    item.link.addEventListener('click', function () {\n      jumpDialog?.close();\n    });\n  }\n  // Sort case-insensitively by symbol name.\n  items.sort(function (a, b) {\n    return a.lower.localeCompare(b.lower);\n  });\n  return items;\n}\n\n// newJumpListItem creates a new item for the DOM element el.\n// An item is an object with:\n// - name: the element's id (which is the symbol name)\n// - kind: the element's kind (function, variable, etc.),\n// - link: a link ('a' tag) to the element\n// - lower: the name in lower case, just for sorting\nfunction newJumpListItem(el: Element): JumpListItem {\n  const a = document.createElement('a');\n  const name = el.getAttribute('id');\n  a.setAttribute('href', '#' + name);\n  a.setAttribute('tabindex', '-1');\n  a.setAttribute('data-gtmc', 'jump to link');\n  const kind = el.getAttribute('data-kind');\n  return {\n    link: a,\n    name: name ?? '',\n    kind: kind ?? '',\n    lower: name?.toLowerCase() ?? '', // for sorting\n  };\n}\n\nlet lastFilterValue: string; // The last contents of the filter text box.\nlet activeJumpItem = -1; // The index of the currently active item in the list.\n\n// updateJumpList sets the elements of the dialog list to\n// everything whose name contains filter.\nfunction updateJumpList(filter: string) {\n  lastFilterValue = filter;\n  if (!jumpListItems) {\n    jumpListItems = collectJumpListItems();\n  }\n  setActiveJumpItem(-1);\n\n  // Remove all children from list.\n  while (jumpList?.firstChild) {\n    jumpList.firstChild.remove();\n  }\n\n  if (filter) {\n    // A filter is set. We treat the filter as a substring that can appear in\n    // an item name (case insensitive), and find the following matches - in\n    // order of priority:\n    //\n    // 1. Exact matches (the filter matches the item's name exactly)\n    // 2. Prefix matches (the item's name starts with filter)\n    // 3. Infix matches (the filter is a substring of the item's name)\n    const filterLowerCase = filter.toLowerCase();\n\n    const exactMatches = [];\n    const prefixMatches = [];\n    const infixMatches = [];\n\n    // makeLinkHtml creates the link name HTML for a list item. item is the DOM\n    // item. item.name.substr(boldStart, boldEnd) will be bolded.\n    const makeLinkHtml = (item: JumpListItem, boldStart: number, boldEnd: number) => {\n      return (\n        item.name.substring(0, boldStart) +\n        '<b>' +\n        item.name.substring(boldStart, boldEnd) +\n        '</b>' +\n        item.name.substring(boldEnd)\n      );\n    };\n\n    for (const item of jumpListItems ?? []) {\n      const nameLowerCase = item.name.toLowerCase();\n\n      if (nameLowerCase === filterLowerCase) {\n        item.link.innerHTML = makeLinkHtml(item, 0, item.name.length);\n        exactMatches.push(item);\n      } else if (nameLowerCase.startsWith(filterLowerCase)) {\n        item.link.innerHTML = makeLinkHtml(item, 0, filter.length);\n        prefixMatches.push(item);\n      } else {\n        const index = nameLowerCase.indexOf(filterLowerCase);\n        if (index > -1) {\n          item.link.innerHTML = makeLinkHtml(item, index, index + filter.length);\n          infixMatches.push(item);\n        }\n      }\n    }\n\n    for (const item of exactMatches.concat(prefixMatches).concat(infixMatches)) {\n      jumpList?.appendChild(item.link);\n    }\n  } else {\n    if (!jumpListItems || jumpListItems.length === 0) {\n      const msg = document.createElement('i');\n      msg.innerHTML = 'There are no symbols on this page.';\n      jumpList?.appendChild(msg);\n    }\n    // No filter set; display all items in their existing order.\n    for (const item of jumpListItems ?? []) {\n      item.link.innerHTML = item.name + ' <i>' + item.kind + '</i>';\n      jumpList?.appendChild(item.link);\n    }\n  }\n\n  if (jumpBody) {\n    jumpBody.scrollTop = 0;\n  }\n  if (jumpListItems?.length && jumpList && jumpList.children.length > 0) {\n    setActiveJumpItem(0);\n  }\n}\n\n// Set the active jump item to n.\nfunction setActiveJumpItem(n: number) {\n  const cs = jumpList?.children as HTMLCollectionOf<HTMLElement> | null | undefined;\n  if (!cs || !jumpBody) {\n    return;\n  }\n  if (activeJumpItem >= 0) {\n    cs[activeJumpItem].classList.remove('JumpDialog-active');\n  }\n  if (n >= cs.length) {\n    n = cs.length - 1;\n  }\n  if (n >= 0) {\n    cs[n].classList.add('JumpDialog-active');\n\n    // Scroll so the active item is visible.\n    // For some reason cs[n].scrollIntoView() doesn't behave as I'd expect:\n    // it moves the entire dialog box in the viewport.\n\n    // Get the top and bottom of the active item relative to jumpBody.\n    const activeTop = cs[n].offsetTop - cs[0].offsetTop;\n    const activeBottom = activeTop + cs[n].clientHeight;\n    if (activeTop < jumpBody.scrollTop) {\n      // Off the top; scroll up.\n      jumpBody.scrollTop = activeTop;\n    } else if (activeBottom > jumpBody.scrollTop + jumpBody.clientHeight) {\n      // Off the bottom; scroll down.\n      jumpBody.scrollTop = activeBottom - jumpBody.clientHeight;\n    }\n  }\n  activeJumpItem = n;\n}\n\n// Increment the activeJumpItem by delta.\nfunction incActiveJumpItem(delta: number) {\n  if (activeJumpItem < 0) {\n    return;\n  }\n  let n = activeJumpItem + delta;\n  if (n < 0) {\n    n = 0;\n  }\n  setActiveJumpItem(n);\n}\n\nexport function initModals(): void {\n  // Pressing a key in the filter updates the list (if the filter actually changed).\n  jumpFilter?.addEventListener('keyup', function () {\n    if (jumpFilter.value.toUpperCase() != lastFilterValue.toUpperCase()) {\n      updateJumpList(jumpFilter.value);\n    }\n  });\n\n  // Pressing enter in the filter selects the first element in the list.\n  jumpFilter?.addEventListener('keydown', function (event) {\n    const upArrow = 38;\n    const downArrow = 40;\n    const enterKey = 13;\n    switch (event.which) {\n      case upArrow:\n        incActiveJumpItem(-1);\n        event.preventDefault();\n        break;\n      case downArrow:\n        incActiveJumpItem(1);\n        event.preventDefault();\n        break;\n      case enterKey:\n        if (activeJumpItem >= 0) {\n          if (jumpList) {\n            (jumpList.children[activeJumpItem] as HTMLElement).click();\n            event.preventDefault();\n          }\n        }\n        break;\n    }\n  });\n\n  const shortcutsDialog = document.querySelector<HTMLDialogElement>('.ShortcutsDialog');\n\n  // Keyboard shortcuts:\n  // - Pressing '/' focuses the search box\n  // - Pressing 'f' or 'F' opens the jump-to-symbol dialog.\n  // - Pressing '?' opens up the shortcut dialog.\n  // Ignore a keypress if a dialog is already open, or if it is pressed on a\n  // component that wants to consume it.\n  document.addEventListener('keypress', function (e) {\n    if (jumpDialog?.open || shortcutsDialog?.open) {\n      return;\n    }\n    const target = e.target as HTMLElement | null;\n    const t = target?.tagName;\n    if (t == 'INPUT' || t == 'SELECT' || t == 'TEXTAREA') {\n      return;\n    }\n    if (target?.contentEditable == 'true') {\n      return;\n    }\n    if (e.metaKey || e.ctrlKey) {\n      return;\n    }\n    const ch = String.fromCharCode(e.which);\n    switch (ch) {\n      case 'f':\n      case 'F':\n        e.preventDefault();\n        if (jumpFilter) {\n          jumpFilter.value = '';\n        }\n        jumpDialog?.showModal();\n        jumpFilter?.focus();\n        updateJumpList('');\n        break;\n      case '?':\n        shortcutsDialog?.showModal();\n        break;\n    }\n  });\n\n  const jumpOutlineInput = document.querySelector('.js-jumpToInput');\n  if (jumpOutlineInput) {\n    jumpOutlineInput.addEventListener('click', () => {\n      if (jumpFilter) {\n        jumpFilter.value = '';\n      }\n      updateJumpList('');\n    });\n  }\n}\n", "/**\n * @license\n * Copyright 2021 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\nimport { TreeNavController } from './tree.js';\n\nexport class SelectNavController {\n  constructor(private el: Element) {\n    this.el.addEventListener('change', e => {\n      const target = e.target as HTMLSelectElement;\n      let href = target.value;\n      if (!target.value.startsWith('/')) {\n        href = '/' + href;\n      }\n      window.location.href = href;\n    });\n  }\n}\n\nexport function makeSelectNav(tree: TreeNavController): HTMLLabelElement {\n  const label = document.createElement('label');\n  label.classList.add('go-Label');\n  label.setAttribute('aria-label', 'Menu');\n  const select = document.createElement('select');\n  select.classList.add('go-Select', 'js-selectNav');\n  label.appendChild(select);\n  const outline = document.createElement('optgroup');\n  outline.label = 'Outline';\n  select.appendChild(outline);\n  const groupMap: Record<string, HTMLOptGroupElement> = {};\n  let group: HTMLOptGroupElement;\n  for (const t of tree.treeitems) {\n    if (Number(t.depth) > 4) continue;\n    if (t.groupTreeitem) {\n      group = groupMap[t.groupTreeitem.label];\n      if (!group) {\n        group = groupMap[t.groupTreeitem.label] = document.createElement('optgroup');\n        group.label = t.groupTreeitem.label;\n        select.appendChild(group);\n      }\n    } else {\n      group = outline;\n    }\n    const o = document.createElement('option');\n    o.label = t.label;\n    o.textContent = t.label;\n    o.value = (t.el as HTMLAnchorElement).href.replace(window.location.origin, '').replace('/', '');\n    group.appendChild(o);\n  }\n  tree.addObserver(t => {\n    const hash = (t.el as HTMLAnchorElement).hash;\n    const value = select.querySelector<HTMLOptionElement>(`[value$=\"${hash}\"]`)?.value;\n    if (value) {\n      select.value = value;\n    }\n  }, 50);\n  return label;\n}\n", "/**\n * @license\n * Copyright 2021 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/**\n * TreeNavController is the navigation tree component of the documentation page.\n * It adds accessiblity attributes to a tree, observes the heading elements\n * focus the topmost link for headings visible on the page, and implements the\n * WAI-ARIA Treeview Design Pattern with full\n * [keyboard support](https://www.w3.org/TR/wai-aria-practices/examples/treeview/treeview-2/treeview-2a.html#kbd_label).\n */\nexport class TreeNavController {\n  treeitems: TreeItem[];\n\n  /**\n   * firstChars is the first character of each treeitem in the same order\n   * as this.treeitems. We use this array to set focus by character when\n   * navigating the tree with a keyboard.\n   */\n  private firstChars: string[];\n  private firstTreeitem: TreeItem | null;\n  private lastTreeitem: TreeItem | null;\n  private observerCallbacks: ((t: TreeItem) => void)[];\n\n  constructor(private el: HTMLElement) {\n    this.treeitems = [];\n    this.firstChars = [];\n    this.firstTreeitem = null;\n    this.lastTreeitem = null;\n    this.observerCallbacks = [];\n    this.init();\n  }\n\n  private init(): void {\n    this.handleResize();\n    window.addEventListener('resize', this.handleResize);\n    this.findTreeItems();\n    this.updateVisibleTreeitems();\n    this.observeTargets();\n    if (this.firstTreeitem) {\n      this.firstTreeitem.el.tabIndex = 0;\n    }\n  }\n\n  private handleResize = (): void => {\n    this.el.style.setProperty('--js-tree-height', '100vh');\n    this.el.style.setProperty('--js-tree-height', this.el.clientHeight + 'px');\n  };\n\n  private observeTargets() {\n    this.addObserver(treeitem => {\n      this.expandTreeitem(treeitem);\n      this.setSelected(treeitem);\n      // TODO: Fix scroll issue in https://golang.org/issue/47450.\n      // treeitem.el.scrollIntoView({ block: 'nearest' });\n    });\n\n    const targets = new Map<string, boolean>();\n    const observer = new IntersectionObserver(\n      entries => {\n        for (const entry of entries) {\n          targets.set(entry.target.id, entry.isIntersecting || entry.intersectionRatio === 1);\n        }\n        for (const [id, isIntersecting] of targets) {\n          if (isIntersecting) {\n            const active = this.treeitems.find(t =>\n              (t.el as HTMLAnchorElement)?.href.endsWith(`#${id}`)\n            );\n            if (active) {\n              for (const fn of this.observerCallbacks) {\n                fn(active);\n              }\n            }\n            break;\n          }\n        }\n      },\n      {\n        threshold: 1.0,\n        rootMargin: '-60px 0px 0px 0px',\n      }\n    );\n\n    for (const href of this.treeitems.map(t => t.el.getAttribute('href'))) {\n      if (href) {\n        const id = href.replace(window.location.origin, '').replace('/', '').replace('#', '');\n        const target = document.getElementById(id);\n        if (target) {\n          observer.observe(target);\n        }\n      }\n    }\n  }\n\n  addObserver(fn: (t: TreeItem) => void, delay = 200): void {\n    this.observerCallbacks.push(debounce(fn, delay));\n  }\n\n  setFocusToNextItem(currentItem: TreeItem): void {\n    let nextItem = null;\n    for (let i = currentItem.index + 1; i < this.treeitems.length; i++) {\n      const ti = this.treeitems[i];\n      if (ti.isVisible) {\n        nextItem = ti;\n        break;\n      }\n    }\n    if (nextItem) {\n      this.setFocusToItem(nextItem);\n    }\n  }\n\n  setFocusToPreviousItem(currentItem: TreeItem): void {\n    let prevItem = null;\n    for (let i = currentItem.index - 1; i > -1; i--) {\n      const ti = this.treeitems[i];\n      if (ti.isVisible) {\n        prevItem = ti;\n        break;\n      }\n    }\n    if (prevItem) {\n      this.setFocusToItem(prevItem);\n    }\n  }\n\n  setFocusToParentItem(currentItem: TreeItem): void {\n    if (currentItem.groupTreeitem) {\n      this.setFocusToItem(currentItem.groupTreeitem);\n    }\n  }\n\n  setFocusToFirstItem(): void {\n    this.firstTreeitem && this.setFocusToItem(this.firstTreeitem);\n  }\n\n  setFocusToLastItem(): void {\n    this.lastTreeitem && this.setFocusToItem(this.lastTreeitem);\n  }\n\n  setSelected(currentItem: TreeItem): void {\n    for (const l1 of this.el.querySelectorAll('[aria-expanded=\"true\"]')) {\n      if (l1 === currentItem.el) continue;\n      if (!l1.nextElementSibling?.contains(currentItem.el)) {\n        l1.setAttribute('aria-expanded', 'false');\n      }\n    }\n    for (const l1 of this.el.querySelectorAll('[aria-selected]')) {\n      if (l1 !== currentItem.el) {\n        l1.setAttribute('aria-selected', 'false');\n      }\n    }\n    currentItem.el.setAttribute('aria-selected', 'true');\n    this.updateVisibleTreeitems();\n    this.setFocusToItem(currentItem, false);\n  }\n\n  expandTreeitem(treeitem: TreeItem): void {\n    let currentItem: TreeItem | null = treeitem;\n    while (currentItem) {\n      if (currentItem.isExpandable) {\n        currentItem.el.setAttribute('aria-expanded', 'true');\n      }\n      currentItem = currentItem.groupTreeitem;\n    }\n    this.updateVisibleTreeitems();\n  }\n\n  expandAllSiblingItems(currentItem: TreeItem): void {\n    for (const ti of this.treeitems) {\n      if (ti.groupTreeitem === currentItem.groupTreeitem && ti.isExpandable) {\n        this.expandTreeitem(ti);\n      }\n    }\n  }\n\n  collapseTreeitem(currentItem: TreeItem): void {\n    let groupTreeitem = null;\n\n    if (currentItem.isExpanded()) {\n      groupTreeitem = currentItem;\n    } else {\n      groupTreeitem = currentItem.groupTreeitem;\n    }\n\n    if (groupTreeitem) {\n      groupTreeitem.el.setAttribute('aria-expanded', 'false');\n      this.updateVisibleTreeitems();\n      this.setFocusToItem(groupTreeitem);\n    }\n  }\n\n  setFocusByFirstCharacter(currentItem: TreeItem, char: string): void {\n    let start: number, index: number;\n    char = char.toLowerCase();\n\n    // Get start index for search based on position of currentItem\n    start = currentItem.index + 1;\n    if (start === this.treeitems.length) {\n      start = 0;\n    }\n\n    // Check remaining slots in the menu\n    index = this.getIndexFirstChars(start, char);\n\n    // If not found in remaining slots, check from beginning\n    if (index === -1) {\n      index = this.getIndexFirstChars(0, char);\n    }\n\n    // If match was found...\n    if (index > -1) {\n      this.setFocusToItem(this.treeitems[index]);\n    }\n  }\n\n  private findTreeItems() {\n    const findItems = (el: HTMLElement, group: TreeItem | null) => {\n      let ti = group;\n      let curr = el.firstElementChild as HTMLElement;\n      while (curr) {\n        if (curr.tagName === 'A' || curr.tagName === 'SPAN') {\n          ti = new TreeItem(curr, this, group);\n          this.treeitems.push(ti);\n          this.firstChars.push(ti.label.substring(0, 1).toLowerCase());\n        }\n        if (curr.firstElementChild) {\n          findItems(curr, ti);\n        }\n        curr = curr.nextElementSibling as HTMLElement;\n      }\n    };\n    findItems(this.el as HTMLElement, null);\n    this.treeitems.map((ti, idx) => (ti.index = idx));\n  }\n\n  private updateVisibleTreeitems(): void {\n    this.firstTreeitem = this.treeitems[0];\n\n    for (const ti of this.treeitems) {\n      let parent = ti.groupTreeitem;\n      ti.isVisible = true;\n      while (parent && parent.el !== this.el) {\n        if (!parent.isExpanded()) {\n          ti.isVisible = false;\n        }\n        parent = parent.groupTreeitem;\n      }\n      if (ti.isVisible) {\n        this.lastTreeitem = ti;\n      }\n    }\n  }\n\n  private setFocusToItem(treeitem: TreeItem, focusEl = true) {\n    treeitem.el.tabIndex = 0;\n    if (focusEl) {\n      treeitem.el.focus();\n    }\n    for (const ti of this.treeitems) {\n      if (ti !== treeitem) {\n        ti.el.tabIndex = -1;\n      }\n    }\n  }\n\n  private getIndexFirstChars(startIndex: number, char: string): number {\n    for (let i = startIndex; i < this.firstChars.length; i++) {\n      if (this.treeitems[i].isVisible && char === this.firstChars[i]) {\n        return i;\n      }\n    }\n    return -1;\n  }\n}\n\nclass TreeItem {\n  el: HTMLElement;\n  groupTreeitem: TreeItem | null;\n  label: string;\n  isExpandable: boolean;\n  isVisible: boolean;\n  depth: number;\n  index: number;\n\n  private tree: TreeNavController;\n  private isInGroup: boolean;\n\n  constructor(el: HTMLElement, treeObj: TreeNavController, group: TreeItem | null) {\n    el.tabIndex = -1;\n    this.el = el;\n    this.groupTreeitem = group;\n    this.label = el.textContent?.trim() ?? '';\n    this.tree = treeObj;\n    this.depth = (group?.depth || 0) + 1;\n    this.index = 0;\n\n    const parent = el.parentElement;\n    if (parent?.tagName.toLowerCase() === 'li') {\n      parent?.setAttribute('role', 'none');\n    }\n    el.setAttribute('aria-level', this.depth + '');\n    if (el.getAttribute('aria-label')) {\n      this.label = el?.getAttribute('aria-label')?.trim() ?? '';\n    }\n\n    this.isExpandable = false;\n    this.isVisible = false;\n    this.isInGroup = !!group;\n\n    let curr = el.nextElementSibling;\n    while (curr) {\n      if (curr.tagName.toLowerCase() == 'ul') {\n        const groupId = `${group?.label ?? ''} nav group ${this.label}`.replace(/[\\W_]+/g, '_');\n        el.setAttribute('aria-owns', groupId);\n        el.setAttribute('aria-expanded', 'false');\n        curr.setAttribute('role', 'group');\n        curr.setAttribute('id', groupId);\n        this.isExpandable = true;\n        break;\n      }\n\n      curr = curr.nextElementSibling;\n    }\n    this.init();\n  }\n\n  private init() {\n    this.el.tabIndex = -1;\n    if (!this.el.getAttribute('role')) {\n      this.el.setAttribute('role', 'treeitem');\n    }\n    this.el.addEventListener('keydown', this.handleKeydown.bind(this));\n    this.el.addEventListener('click', this.handleClick.bind(this));\n    this.el.addEventListener('focus', this.handleFocus.bind(this));\n    this.el.addEventListener('blur', this.handleBlur.bind(this));\n  }\n\n  isExpanded() {\n    if (this.isExpandable) {\n      return this.el.getAttribute('aria-expanded') === 'true';\n    }\n\n    return false;\n  }\n\n  isSelected() {\n    return this.el.getAttribute('aria-selected') === 'true';\n  }\n\n  private handleClick(event: MouseEvent) {\n    // only process click events that directly happened on this treeitem\n    if (event.target !== this.el && event.target !== this.el.firstElementChild) {\n      return;\n    }\n    if (this.isExpandable) {\n      if (this.isExpanded() && this.isSelected()) {\n        this.tree.collapseTreeitem(this);\n      } else {\n        this.tree.expandTreeitem(this);\n      }\n      event.stopPropagation();\n    }\n    this.tree.setSelected(this);\n  }\n\n  private handleFocus() {\n    let el = this.el;\n    if (this.isExpandable) {\n      el = (el.firstElementChild as HTMLElement) ?? el;\n    }\n    el.classList.add('focus');\n  }\n\n  private handleBlur() {\n    let el = this.el;\n    if (this.isExpandable) {\n      el = (el.firstElementChild as HTMLElement) ?? el;\n    }\n    el.classList.remove('focus');\n  }\n\n  private handleKeydown(event: KeyboardEvent) {\n    if (event.altKey || event.ctrlKey || event.metaKey) {\n      return;\n    }\n\n    let captured = false;\n    switch (event.key) {\n      case ' ':\n      case 'Enter':\n        if (this.isExpandable) {\n          if (this.isExpanded() && this.isSelected()) {\n            this.tree.collapseTreeitem(this);\n          } else {\n            this.tree.expandTreeitem(this);\n          }\n          captured = true;\n        } else {\n          event.stopPropagation();\n        }\n        this.tree.setSelected(this);\n        break;\n\n      case 'ArrowUp':\n        this.tree.setFocusToPreviousItem(this);\n        captured = true;\n        break;\n\n      case 'ArrowDown':\n        this.tree.setFocusToNextItem(this);\n        captured = true;\n        break;\n\n      case 'ArrowRight':\n        if (this.isExpandable) {\n          if (this.isExpanded()) {\n            this.tree.setFocusToNextItem(this);\n          } else {\n            this.tree.expandTreeitem(this);\n          }\n        }\n        captured = true;\n        break;\n\n      case 'ArrowLeft':\n        if (this.isExpandable && this.isExpanded()) {\n          this.tree.collapseTreeitem(this);\n          captured = true;\n        } else {\n          if (this.isInGroup) {\n            this.tree.setFocusToParentItem(this);\n            captured = true;\n          }\n        }\n        break;\n\n      case 'Home':\n        this.tree.setFocusToFirstItem();\n        captured = true;\n        break;\n\n      case 'End':\n        this.tree.setFocusToLastItem();\n        captured = true;\n        break;\n\n      default:\n        if (event.key.length === 1 && event.key.match(/\\S/)) {\n          if (event.key == '*') {\n            this.tree.expandAllSiblingItems(this);\n          } else {\n            this.tree.setFocusByFirstCharacter(this, event.key);\n          }\n          captured = true;\n        }\n        break;\n    }\n\n    if (captured) {\n      event.stopPropagation();\n      event.preventDefault();\n    }\n  }\n}\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction debounce<T extends (...args: any[]) => any>(func: T, wait: number) {\n  let timeout: ReturnType<typeof setTimeout> | null;\n  return (...args: Parameters<T>) => {\n    const later = () => {\n      timeout = null;\n      func(...args);\n    };\n    if (timeout) {\n      clearTimeout(timeout);\n    }\n    timeout = setTimeout(later, wait);\n  };\n}\n", "/*!\n * @license\n * Copyright 2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/**\n * Controller for a table element with expandable rows. Adds event listeners to\n * a toggle within a table row that controls visiblity of additional related\n * rows in the table.\n *\n * @example\n * ```typescript\n * import {ExpandableRowsTableController} from '/static/js/table';\n *\n * const el = document .querySelector<HTMLTableElement>('.js-myTableElement')\n * new ExpandableRowsTableController(el));\n * ```\n */\nexport class ExpandableRowsTableController {\n  private rows: HTMLTableRowElement[];\n  private toggles: HTMLButtonElement[];\n\n  /**\n   * Create a table controller.\n   * @param table - The table element to which the controller binds.\n   */\n  constructor(private table: HTMLTableElement, private toggleAll?: HTMLButtonElement | null) {\n    this.rows = Array.from(table.querySelectorAll<HTMLTableRowElement>('[data-aria-controls]'));\n    this.toggles = Array.from(this.table.querySelectorAll('[aria-expanded]'));\n    this.setAttributes();\n    this.attachEventListeners();\n    this.update();\n  }\n\n  /**\n   * setAttributes sets data-aria-* and data-id attributes to regular\n   * html attributes as a workaround for limitations from safehtml.\n   */\n  private setAttributes() {\n    for (const a of ['data-aria-controls', 'data-aria-labelledby', 'data-id']) {\n      this.table.querySelectorAll(`[${a}]`).forEach(t => {\n        t.setAttribute(a.replace('data-', ''), t.getAttribute(a) ?? '');\n        t.removeAttribute(a);\n      });\n    }\n  }\n\n  private attachEventListeners() {\n    this.rows.forEach(t => {\n      t.addEventListener('click', e => {\n        this.handleToggleClick(e);\n      });\n    });\n    this.toggleAll?.addEventListener('click', () => {\n      this.expandAllItems();\n    });\n\n    document.addEventListener('keydown', e => {\n      if ((e.ctrlKey || e.metaKey) && e.key === 'f') {\n        this.expandAllItems();\n      }\n    });\n  }\n\n  private handleToggleClick(e: MouseEvent) {\n    let target = e.currentTarget as HTMLTableRowElement | null;\n    if (!target?.hasAttribute('aria-expanded')) {\n      target = this.table.querySelector(\n        `button[aria-controls=\"${target?.getAttribute('aria-controls')}\"]`\n      );\n    }\n    const isExpanded = target?.getAttribute('aria-expanded') === 'true';\n    target?.setAttribute('aria-expanded', isExpanded ? 'false' : 'true');\n    e.stopPropagation();\n    this.update();\n  }\n\n  expandAllItems = (): void => {\n    this.toggles.map(t => t.setAttribute('aria-expanded', 'true'));\n    this.update();\n  };\n\n  private collapseAllItems = () => {\n    this.toggles.map(t => t.setAttribute('aria-expanded', 'false'));\n    this.update();\n  };\n\n  private update = () => {\n    this.updateVisibleItems();\n    setTimeout(() => this.updateGlobalToggle());\n  };\n\n  private updateVisibleItems() {\n    this.rows.map(t => {\n      const isExpanded = t?.getAttribute('aria-expanded') === 'true';\n      const rowIds = t?.getAttribute('aria-controls')?.trimEnd().split(' ');\n      rowIds?.map(id => {\n        const target = document.getElementById(`${id}`);\n        if (isExpanded) {\n          target?.classList.add('visible');\n          target?.classList.remove('hidden');\n        } else {\n          target?.classList.add('hidden');\n          target?.classList.remove('visible');\n        }\n      });\n    });\n  }\n\n  private updateGlobalToggle() {\n    if (!this.toggleAll) return;\n    if (this.rows.some(t => t.hasAttribute('aria-expanded'))) {\n      this.toggleAll.style.display = 'block';\n    }\n    const someCollapsed = this.toggles.some(el => el.getAttribute('aria-expanded') === 'false');\n    if (someCollapsed) {\n      this.toggleAll.innerText = 'Expand all';\n      this.toggleAll.onclick = this.expandAllItems;\n    } else {\n      this.toggleAll.innerText = 'Collapse all';\n      this.toggleAll.onclick = this.collapseAllItems;\n    }\n  }\n}\n", "import { initPlaygrounds } from 'static/shared/playground/playground';\nimport { initModals } from 'static/shared/jump/jump';\nimport { SelectNavController, makeSelectNav } from 'static/shared/outline/select';\nimport { TreeNavController } from 'static/shared/outline/tree';\nimport { ExpandableRowsTableController } from 'static/shared/table/table';\n\ninitModals();\ninitPlaygrounds();\n\nconst directories = document.querySelector<HTMLTableElement>('.js-expandableTable');\nif (directories) {\n  const table = new ExpandableRowsTableController(\n    directories,\n    document.querySelector<HTMLButtonElement>('.js-expandAllDirectories')\n  );\n  // Expand directories on page load with expand-directories query param.\n  if (window.location.search.includes('expand-directories')) {\n    table.expandAllItems();\n  }\n}\n\nconst treeEl = document.querySelector<HTMLElement>('.js-tree');\nif (treeEl) {\n  const treeCtrl = new TreeNavController(treeEl);\n  const select = makeSelectNav(treeCtrl);\n  const mobileNav = document.querySelector('.js-mainNavMobile');\n  if (mobileNav && mobileNav.firstElementChild) {\n    mobileNav?.replaceChild(select, mobileNav.firstElementChild);\n  }\n  if (select.firstElementChild) {\n    new SelectNavController(select.firstElementChild);\n  }\n}\n\n/**\n * Event handlers for expanding and collapsing the readme section.\n */\nconst readme = document.querySelector('.js-readme');\nconst readmeContent = document.querySelector('.js-readmeContent');\nconst readmeOutline = document.querySelector('.js-readmeOutline');\nconst readmeExpand = document.querySelectorAll('.js-readmeExpand');\nconst readmeCollapse = document.querySelector('.js-readmeCollapse');\nconst mobileNavSelect = document.querySelector<HTMLSelectElement>('.DocNavMobile-select');\nif (readme && readmeContent && readmeOutline && readmeExpand.length && readmeCollapse) {\n  if (window.location.hash.includes('readme')) {\n    readme.classList.add('UnitReadme--expanded');\n  }\n  mobileNavSelect?.addEventListener('change', e => {\n    if ((e.target as HTMLSelectElement).value.startsWith('readme-')) {\n      readme.classList.add('UnitReadme--expanded');\n    }\n  });\n  readmeExpand.forEach(el =>\n    el.addEventListener('click', e => {\n      e.preventDefault();\n      readme.classList.add('UnitReadme--expanded');\n      readme.scrollIntoView();\n    })\n  );\n  readmeCollapse.addEventListener('click', e => {\n    e.preventDefault();\n    readme.classList.remove('UnitReadme--expanded');\n    if (readmeExpand[1]) {\n      readmeExpand[1].scrollIntoView({ block: 'center' });\n    }\n  });\n  readmeContent.addEventListener('keyup', () => {\n    readme.classList.add('UnitReadme--expanded');\n  });\n  readmeContent.addEventListener('click', () => {\n    readme.classList.add('UnitReadme--expanded');\n  });\n  readmeOutline.addEventListener('click', () => {\n    readme.classList.add('UnitReadme--expanded');\n  });\n  document.addEventListener('keydown', e => {\n    if ((e.ctrlKey || e.metaKey) && e.key === 'f') {\n      readme.classList.add('UnitReadme--expanded');\n    }\n  });\n}\n\n/**\n * Expand details items that are focused. This will expand\n * deprecated symbols when they are navigated to from the index\n * or a direct link.\n */\nfunction openDeprecatedSymbol() {\n  if (!location.hash) return;\n  const heading = document.getElementById(location.hash.slice(1));\n  const grandParent = heading?.parentElement?.parentElement as HTMLDetailsElement | null;\n  if (grandParent?.nodeName === 'DETAILS') {\n    grandParent.open = true;\n  }\n}\nopenDeprecatedSymbol();\nwindow.addEventListener('hashchange', () => openDeprecatedSymbol());\n\n/**\n * Listen for changes in the build context dropdown.\n */\ndocument.querySelectorAll('.js-buildContextSelect').forEach(el => {\n  el.addEventListener('change', e => {\n    window.location.search = `?GOOS=${(e.target as HTMLSelectElement).value}`;\n  });\n});\n"],
-  "mappings": "AAAA,AAgBA,GAAM,GAAuB,CAC3B,UAAW,kBACX,eAAgB,uBAChB,cAAe,6BACf,eAAgB,+BAChB,cAAe,8BACf,YAAa,mCACb,aAAc,oCACd,cAAe,qCACf,WAAY,mCAOP,OAAkC,CA4CvC,YAA6B,EAA+B,CAA/B,iBA5E/B,YA6FI,AAhBA,KAAK,UAAY,EACjB,KAAK,SAAW,EAAU,cAAc,KACxC,KAAK,QAAU,EAAU,cAAc,EAAqB,eAC5D,KAAK,aAAe,EAAU,cAAc,EAAqB,aACjE,KAAK,cAAgB,EAAU,cAAc,EAAqB,cAClE,KAAK,eAAiB,EAAU,cAAc,EAAqB,eACnE,KAAK,YAAc,EAAU,cAAc,EAAqB,YAChE,KAAK,QAAU,KAAK,aAAa,EAAU,cAAc,EAAqB,gBAC9E,KAAK,SAAW,EAAU,cAAc,EAAqB,gBAG7D,QAAK,eAAL,QAAmB,iBAAiB,QAAS,IAAM,KAAK,0BACxD,QAAK,gBAAL,QAAoB,iBAAiB,QAAS,IAAM,KAAK,0BACzD,QAAK,iBAAL,QAAqB,iBAAiB,QAAS,IAAM,KAAK,2BAC1D,QAAK,cAAL,QAAkB,iBAAiB,QAAS,IAAM,KAAK,wBAEnD,EAAC,KAAK,SAEV,MAAK,SACL,KAAK,QAAQ,iBAAiB,QAAS,IAAM,KAAK,UAClD,KAAK,QAAQ,iBAAiB,UAAW,GAAK,KAAK,UAAU,KAO/D,aAAa,EAAyC,CAxGxD,QAyGI,GAAM,GAAI,SAAS,cAAc,YACjC,SAAE,UAAU,IAAI,4BAA6B,QAC7C,EAAE,WAAa,GACf,EAAE,MAAQ,oBAAI,cAAJ,OAAmB,GAC7B,oBAAI,gBAAJ,QAAmB,aAAa,EAAG,GAC5B,EAMT,eAAoC,CApHtC,MAqHI,MAAO,QAAK,WAAL,cAAe,KAMxB,QAAe,CACb,KAAK,UAAU,KAAO,GAMhB,QAAe,CAlIzB,MAmII,GAAI,QAAK,UAAL,cAAc,MAAO,CACvB,GAAM,GAAiB,MAAK,QAAQ,MAAM,MAAM,QAAU,IAAI,OAE9D,KAAK,QAAQ,MAAM,OAAS,GAAI,IAAK,EAAgB,GAAK,GAAK,GAAK,SAYhE,UAAU,EAAkB,CAClC,AAAI,EAAE,MAAQ,OACZ,UAAS,YAAY,aAAc,GAAO,KAC1C,EAAE,kBAOE,aAAa,EAAgB,CACnC,AAAI,KAAK,SACP,MAAK,QAAQ,MAAQ,GAOjB,cAAc,EAAgB,CACpC,AAAI,KAAK,UACP,MAAK,SAAS,YAAc,GAQxB,aAAa,EAAa,CAChC,AAAI,KAAK,SACP,MAAK,QAAQ,YAAc,GAE7B,KAAK,cAAc,+BAOb,wBAAyB,CA1LnC,MA2LI,GAAM,GAAsB,6BAE5B,KAAK,cAAc,mCAEnB,MAAM,cAAe,CACnB,OAAQ,OACR,KAAM,QAAK,UAAL,cAAc,QAEnB,KAAK,GAAO,EAAI,QAChB,KAAK,GAAW,CACf,GAAM,GAAO,EAAsB,EACnC,KAAK,cAAc,YAAY,MAAS,SACxC,OAAO,KAAK,KAEb,MAAM,GAAO,CACZ,KAAK,aAAa,KAOhB,yBAA0B,CAjNpC,QAkNI,KAAK,cAAc,mCACnB,GAAM,GAAO,GAAI,UACjB,EAAK,OAAO,OAAQ,WAAK,UAAL,cAAc,QAAd,OAAuB,IAE3C,MAAM,YAAa,CACjB,OAAQ,OACR,KAAM,IAEL,KAAK,GAAO,EAAI,QAChB,KAAK,CAAC,CAAE,OAAM,WAAY,CACzB,KAAK,cAAc,GAAS,SACxB,GACF,MAAK,aAAa,GAClB,KAAK,YAGR,MAAM,GAAO,CACZ,KAAK,aAAa,KAOhB,sBAAuB,CA1OjC,MA2OI,KAAK,cAAc,mCAEnB,MAAM,gBAAiB,CACrB,OAAQ,OACR,KAAM,KAAK,UAAU,CAAE,KAAM,QAAK,UAAL,cAAc,MAAO,QAAS,MAE1D,KAAK,GAAO,EAAI,QAChB,KAAK,MAAO,CAAE,SAAQ,YAAa,CAClC,KAAK,cAAc,GAAU,IAC7B,OAAW,KAAK,IAAU,GACxB,KAAK,cAAc,EAAE,SACrB,KAAM,IAAI,SAAQ,GAAW,WAAW,EAAS,EAAE,MAAQ,QAG9D,MAAM,GAAO,CACZ,KAAK,aAAa,OAKnB,YAAiC,CACtC,GAAM,GAAmB,SAAS,KAAK,MAAM,mBAC7C,GAAI,EAAkB,CACpB,GAAM,GAAgB,SAAS,eAAe,EAAiB,IAC/D,AAAI,GACF,GAAc,KAAO,IAKzB,GAAM,GAAe,CACnB,GAAG,SAAS,iBAAoC,EAAqB,YAQjE,EAAkB,AAAC,GACvB,EAAa,KAAK,GACT,EAAG,OAAS,EAAc,iBAGrC,OAAW,KAAM,UAAS,iBAAiB,EAAqB,gBAAiB,CAE/E,GAAM,GAAgB,GAAI,GAA4B,GAChD,EAAc,EAAgB,GACpC,AAAI,EACF,EAAY,iBAAiB,QAAS,IAAM,CAC1C,EAAc,WAGhB,QAAQ,KAAK,2BChSnB,AAwBA,GAAM,GAAa,SAAS,cAAiC,eACvD,EAAW,iBAAY,cAA8B,oBACrD,EAAW,iBAAY,cAA8B,oBACrD,EAAa,iBAAY,cAAgC,qBACzD,EAAM,SAAS,cAA8B,qBAS/C,EAUJ,YAAgC,CAC9B,GAAM,GAAQ,GACd,GAAI,EAAC,EACL,QAAW,KAAM,GAAI,iBAAiB,eACpC,EAAM,KAAK,EAAgB,IAI7B,OAAW,KAAQ,GACjB,EAAK,KAAK,iBAAiB,QAAS,UAAY,CAC9C,WAAY,UAIhB,SAAM,KAAK,SAAU,EAAG,EAAG,CACzB,MAAO,GAAE,MAAM,cAAc,EAAE,SAE1B,GAST,WAAyB,EAA2B,CAzEpD,MA0EE,GAAM,GAAI,SAAS,cAAc,KAC3B,EAAO,EAAG,aAAa,MAC7B,EAAE,aAAa,OAAQ,IAAM,GAC7B,EAAE,aAAa,WAAY,MAC3B,EAAE,aAAa,YAAa,gBAC5B,GAAM,GAAO,EAAG,aAAa,aAC7B,MAAO,CACL,KAAM,EACN,KAAM,UAAQ,GACd,KAAM,UAAQ,GACd,MAAO,oBAAM,gBAAN,OAAuB,IAIlC,GAAI,GACA,EAAiB,GAIrB,WAAwB,EAAgB,CAQtC,IAPA,EAAkB,EACb,GACH,GAAgB,KAElB,EAAkB,IAGX,iBAAU,YACf,EAAS,WAAW,SAGtB,GAAI,EAAQ,CAQV,GAAM,GAAkB,EAAO,cAEzB,EAAe,GACf,EAAgB,GAChB,EAAe,GAIf,EAAe,CAAC,EAAoB,EAAmB,IAEzD,EAAK,KAAK,UAAU,EAAG,GACvB,MACA,EAAK,KAAK,UAAU,EAAW,GAC/B,OACA,EAAK,KAAK,UAAU,GAIxB,OAAW,KAAQ,WAAiB,GAAI,CACtC,GAAM,GAAgB,EAAK,KAAK,cAEhC,GAAI,IAAkB,EACpB,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAK,KAAK,QACtD,EAAa,KAAK,WACT,EAAc,WAAW,GAClC,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAO,QACnD,EAAc,KAAK,OACd,CACL,GAAM,GAAQ,EAAc,QAAQ,GACpC,AAAI,EAAQ,IACV,GAAK,KAAK,UAAY,EAAa,EAAM,EAAO,EAAQ,EAAO,QAC/D,EAAa,KAAK,KAKxB,OAAW,KAAQ,GAAa,OAAO,GAAe,OAAO,GAC3D,WAAU,YAAY,EAAK,UAExB,CACL,GAAI,CAAC,GAAiB,EAAc,SAAW,EAAG,CAChD,GAAM,GAAM,SAAS,cAAc,KACnC,EAAI,UAAY,qCAChB,WAAU,YAAY,GAGxB,OAAW,KAAQ,WAAiB,GAClC,EAAK,KAAK,UAAY,EAAK,KAAO,OAAS,EAAK,KAAO,OACvD,WAAU,YAAY,EAAK,MAI/B,AAAI,GACF,GAAS,UAAY,GAEnB,kBAAe,SAAU,GAAY,EAAS,SAAS,OAAS,GAClE,EAAkB,GAKtB,WAA2B,EAAW,CACpC,GAAM,GAAK,iBAAU,SACrB,GAAI,GAAC,GAAM,CAAC,GASZ,IANI,GAAkB,GACpB,EAAG,GAAgB,UAAU,OAAO,qBAElC,GAAK,EAAG,QACV,GAAI,EAAG,OAAS,GAEd,GAAK,EAAG,CACV,EAAG,GAAG,UAAU,IAAI,qBAOpB,GAAM,GAAY,EAAG,GAAG,UAAY,EAAG,GAAG,UACpC,EAAe,EAAY,EAAG,GAAG,aACvC,AAAI,EAAY,EAAS,UAEvB,EAAS,UAAY,EACZ,EAAe,EAAS,UAAY,EAAS,cAEtD,GAAS,UAAY,EAAe,EAAS,cAGjD,EAAiB,GAInB,WAA2B,EAAe,CACxC,GAAI,EAAiB,EACnB,OAEF,GAAI,GAAI,EAAiB,EACzB,AAAI,EAAI,GACN,GAAI,GAEN,EAAkB,GAGb,YAA4B,CAEjC,WAAY,iBAAiB,QAAS,UAAY,CAChD,AAAI,EAAW,MAAM,eAAiB,EAAgB,eACpD,EAAe,EAAW,SAK9B,WAAY,iBAAiB,UAAW,SAAU,EAAO,CACvD,GAAM,GAAU,GACV,EAAY,GACZ,EAAW,GACjB,OAAQ,EAAM,WACP,GACH,EAAkB,IAClB,EAAM,iBACN,UACG,GACH,EAAkB,GAClB,EAAM,iBACN,UACG,GACH,AAAI,GAAkB,GAChB,GACD,GAAS,SAAS,GAAgC,QACnD,EAAM,kBAGV,SAIN,GAAM,GAAkB,SAAS,cAAiC,oBAQlE,SAAS,iBAAiB,WAAY,SAAU,EAAG,CACjD,GAAI,kBAAY,OAAQ,kBAAiB,MACvC,OAEF,GAAM,GAAS,EAAE,OACX,EAAI,iBAAQ,QAOlB,GANI,GAAK,SAAW,GAAK,UAAY,GAAK,YAGtC,kBAAQ,kBAAmB,QAG3B,EAAE,SAAW,EAAE,QACjB,OAGF,OADW,OAAO,aAAa,EAAE,YAE1B,QACA,IACH,EAAE,iBACE,GACF,GAAW,MAAQ,IAErB,WAAY,YACZ,WAAY,QACZ,EAAe,IACf,UACG,IACH,WAAiB,YACjB,SAIN,GAAM,GAAmB,SAAS,cAAc,mBAChD,AAAI,GACF,EAAiB,iBAAiB,QAAS,IAAM,CAC/C,AAAI,GACF,GAAW,MAAQ,IAErB,EAAe,MC1SrB,AASO,WAA0B,CAC/B,YAAoB,EAAa,CAAb,UAClB,KAAK,GAAG,iBAAiB,SAAU,GAAK,CACtC,GAAM,GAAS,EAAE,OACb,EAAO,EAAO,MAClB,AAAK,EAAO,MAAM,WAAW,MAC3B,GAAO,IAAM,GAEf,OAAO,SAAS,KAAO,MAKtB,WAAuB,EAA2C,CACvE,GAAM,GAAQ,SAAS,cAAc,SACrC,EAAM,UAAU,IAAI,YACpB,EAAM,aAAa,aAAc,QACjC,GAAM,GAAS,SAAS,cAAc,UACtC,EAAO,UAAU,IAAI,YAAa,gBAClC,EAAM,YAAY,GAClB,GAAM,GAAU,SAAS,cAAc,YACvC,EAAQ,MAAQ,UAChB,EAAO,YAAY,GACnB,GAAM,GAAgD,GAClD,EACJ,OAAW,KAAK,GAAK,UAAW,CAC9B,GAAI,OAAO,EAAE,OAAS,EAAG,SACzB,AAAI,EAAE,cACJ,GAAQ,EAAS,EAAE,cAAc,OAC5B,GACH,GAAQ,EAAS,EAAE,cAAc,OAAS,SAAS,cAAc,YACjE,EAAM,MAAQ,EAAE,cAAc,MAC9B,EAAO,YAAY,KAGrB,EAAQ,EAEV,GAAM,GAAI,SAAS,cAAc,UACjC,EAAE,MAAQ,EAAE,MACZ,EAAE,YAAc,EAAE,MAClB,EAAE,MAAS,EAAE,GAAyB,KAAK,QAAQ,OAAO,SAAS,OAAQ,IAAI,QAAQ,IAAK,IAC5F,EAAM,YAAY,GAEpB,SAAK,YAAY,GAAK,CApDxB,MAqDI,GAAM,GAAQ,EAAE,GAAyB,KACnC,EAAQ,KAAO,cAAiC,YAAY,SAApD,cAA+D,MAC7E,AAAI,GACF,GAAO,MAAQ,IAEhB,IACI,EC3DT,AAcO,WAAwB,CAa7B,YAAoB,EAAiB,CAAjB,UAoBZ,kBAAe,IAAY,CACjC,KAAK,GAAG,MAAM,YAAY,mBAAoB,SAC9C,KAAK,GAAG,MAAM,YAAY,mBAAoB,KAAK,GAAG,aAAe,OArBrE,KAAK,UAAY,GACjB,KAAK,WAAa,GAClB,KAAK,cAAgB,KACrB,KAAK,aAAe,KACpB,KAAK,kBAAoB,GACzB,KAAK,OAGC,MAAa,CACnB,KAAK,eACL,OAAO,iBAAiB,SAAU,KAAK,cACvC,KAAK,gBACL,KAAK,yBACL,KAAK,iBACD,KAAK,eACP,MAAK,cAAc,GAAG,SAAW,GAS7B,gBAAiB,CACvB,KAAK,YAAY,GAAY,CAC3B,KAAK,eAAe,GACpB,KAAK,YAAY,KAKnB,GAAM,GAAU,GAAI,KACd,EAAW,GAAI,sBACnB,GAAW,CACT,OAAW,KAAS,GAClB,EAAQ,IAAI,EAAM,OAAO,GAAI,EAAM,gBAAkB,EAAM,oBAAsB,GAEnF,OAAW,CAAC,EAAI,IAAmB,GACjC,GAAI,EAAgB,CAClB,GAAM,GAAS,KAAK,UAAU,KAAK,GAAE,CApEjD,MAqEe,WAAE,KAAF,cAA4B,KAAK,SAAS,IAAI,OAEjD,GAAI,EACF,OAAW,KAAM,MAAK,kBACpB,EAAG,GAGP,QAIN,CACE,UAAW,EACX,WAAY,sBAIhB,OAAW,KAAQ,MAAK,UAAU,IAAI,GAAK,EAAE,GAAG,aAAa,SAC3D,GAAI,EAAM,CACR,GAAM,GAAK,EAAK,QAAQ,OAAO,SAAS,OAAQ,IAAI,QAAQ,IAAK,IAAI,QAAQ,IAAK,IAC5E,EAAS,SAAS,eAAe,GACvC,AAAI,GACF,EAAS,QAAQ,IAMzB,YAAY,EAA2B,EAAQ,IAAW,CACxD,KAAK,kBAAkB,KAAK,EAAS,EAAI,IAG3C,mBAAmB,EAA6B,CAC9C,GAAI,GAAW,KACf,OAAS,GAAI,EAAY,MAAQ,EAAG,EAAI,KAAK,UAAU,OAAQ,IAAK,CAClE,GAAM,GAAK,KAAK,UAAU,GAC1B,GAAI,EAAG,UAAW,CAChB,EAAW,EACX,OAGJ,AAAI,GACF,KAAK,eAAe,GAIxB,uBAAuB,EAA6B,CAClD,GAAI,GAAW,KACf,OAAS,GAAI,EAAY,MAAQ,EAAG,EAAI,GAAI,IAAK,CAC/C,GAAM,GAAK,KAAK,UAAU,GAC1B,GAAI,EAAG,UAAW,CAChB,EAAW,EACX,OAGJ,AAAI,GACF,KAAK,eAAe,GAIxB,qBAAqB,EAA6B,CAChD,AAAI,EAAY,eACd,KAAK,eAAe,EAAY,eAIpC,qBAA4B,CAC1B,KAAK,eAAiB,KAAK,eAAe,KAAK,eAGjD,oBAA2B,CACzB,KAAK,cAAgB,KAAK,eAAe,KAAK,cAGhD,YAAY,EAA6B,CA/I3C,MAgJI,OAAW,KAAM,MAAK,GAAG,iBAAiB,0BACxC,AAAI,IAAO,EAAY,IAClB,OAAG,qBAAH,cAAuB,SAAS,EAAY,MAC/C,EAAG,aAAa,gBAAiB,UAGrC,OAAW,KAAM,MAAK,GAAG,iBAAiB,mBACxC,AAAI,IAAO,EAAY,IACrB,EAAG,aAAa,gBAAiB,SAGrC,EAAY,GAAG,aAAa,gBAAiB,QAC7C,KAAK,yBACL,KAAK,eAAe,EAAa,IAGnC,eAAe,EAA0B,CACvC,GAAI,GAA+B,EACnC,KAAO,GACL,AAAI,EAAY,cACd,EAAY,GAAG,aAAa,gBAAiB,QAE/C,EAAc,EAAY,cAE5B,KAAK,yBAGP,sBAAsB,EAA6B,CACjD,OAAW,KAAM,MAAK,UACpB,AAAI,EAAG,gBAAkB,EAAY,eAAiB,EAAG,cACvD,KAAK,eAAe,GAK1B,iBAAiB,EAA6B,CAC5C,GAAI,GAAgB,KAEpB,AAAI,EAAY,aACd,EAAgB,EAEhB,EAAgB,EAAY,cAG1B,GACF,GAAc,GAAG,aAAa,gBAAiB,SAC/C,KAAK,yBACL,KAAK,eAAe,IAIxB,yBAAyB,EAAuB,EAAoB,CAClE,GAAI,GAAe,EACnB,EAAO,EAAK,cAGZ,EAAQ,EAAY,MAAQ,EACxB,IAAU,KAAK,UAAU,QAC3B,GAAQ,GAIV,EAAQ,KAAK,mBAAmB,EAAO,GAGnC,IAAU,IACZ,GAAQ,KAAK,mBAAmB,EAAG,IAIjC,EAAQ,IACV,KAAK,eAAe,KAAK,UAAU,IAI/B,eAAgB,CACtB,GAAM,GAAY,CAAC,EAAiB,IAA2B,CAC7D,GAAI,GAAK,EACL,EAAO,EAAG,kBACd,KAAO,GACL,AAAI,GAAK,UAAY,KAAO,EAAK,UAAY,SAC3C,GAAK,GAAI,GAAS,EAAM,KAAM,GAC9B,KAAK,UAAU,KAAK,GACpB,KAAK,WAAW,KAAK,EAAG,MAAM,UAAU,EAAG,GAAG,gBAE5C,EAAK,mBACP,EAAU,EAAM,GAElB,EAAO,EAAK,oBAGhB,EAAU,KAAK,GAAmB,MAClC,KAAK,UAAU,IAAI,CAAC,EAAI,IAAS,EAAG,MAAQ,GAGtC,wBAA+B,CACrC,KAAK,cAAgB,KAAK,UAAU,GAEpC,OAAW,KAAM,MAAK,UAAW,CAC/B,GAAI,GAAS,EAAG,cAEhB,IADA,EAAG,UAAY,GACR,GAAU,EAAO,KAAO,KAAK,IAClC,AAAK,EAAO,cACV,GAAG,UAAY,IAEjB,EAAS,EAAO,cAElB,AAAI,EAAG,WACL,MAAK,aAAe,IAKlB,eAAe,EAAoB,EAAU,GAAM,CACzD,EAAS,GAAG,SAAW,EACnB,GACF,EAAS,GAAG,QAEd,OAAW,KAAM,MAAK,UACpB,AAAI,IAAO,GACT,GAAG,GAAG,SAAW,IAKf,mBAAmB,EAAoB,EAAsB,CACnE,OAAS,GAAI,EAAY,EAAI,KAAK,WAAW,OAAQ,IACnD,GAAI,KAAK,UAAU,GAAG,WAAa,IAAS,KAAK,WAAW,GAC1D,MAAO,GAGX,MAAO,KAIX,OAAe,CAYb,YAAY,EAAiB,EAA4B,EAAwB,CAnSnF,cAoSI,EAAG,SAAW,GACd,KAAK,GAAK,EACV,KAAK,cAAgB,EACrB,KAAK,MAAQ,QAAG,cAAH,cAAgB,SAAhB,OAA0B,GACvC,KAAK,KAAO,EACZ,KAAK,MAAS,mBAAO,QAAS,GAAK,EACnC,KAAK,MAAQ,EAEb,GAAM,GAAS,EAAG,cAClB,AAAI,kBAAQ,QAAQ,iBAAkB,MACpC,YAAQ,aAAa,OAAQ,SAE/B,EAAG,aAAa,aAAc,KAAK,MAAQ,IACvC,EAAG,aAAa,eAClB,MAAK,MAAQ,uBAAI,aAAa,gBAAjB,cAAgC,SAAhC,OAA0C,IAGzD,KAAK,aAAe,GACpB,KAAK,UAAY,GACjB,KAAK,UAAY,CAAC,CAAC,EAEnB,GAAI,GAAO,EAAG,mBACd,KAAO,GAAM,CACX,GAAI,EAAK,QAAQ,eAAiB,KAAM,CACtC,GAAM,GAAU,GAAG,oBAAO,QAAP,OAAgB,gBAAgB,KAAK,QAAQ,QAAQ,UAAW,KACnF,EAAG,aAAa,YAAa,GAC7B,EAAG,aAAa,gBAAiB,SACjC,EAAK,aAAa,OAAQ,SAC1B,EAAK,aAAa,KAAM,GACxB,KAAK,aAAe,GACpB,MAGF,EAAO,EAAK,mBAEd,KAAK,OAGC,MAAO,CACb,KAAK,GAAG,SAAW,GACd,KAAK,GAAG,aAAa,SACxB,KAAK,GAAG,aAAa,OAAQ,YAE/B,KAAK,GAAG,iBAAiB,UAAW,KAAK,cAAc,KAAK,OAC5D,KAAK,GAAG,iBAAiB,QAAS,KAAK,YAAY,KAAK,OACxD,KAAK,GAAG,iBAAiB,QAAS,KAAK,YAAY,KAAK,OACxD,KAAK,GAAG,iBAAiB,OAAQ,KAAK,WAAW,KAAK,OAGxD,YAAa,CACX,MAAI,MAAK,aACA,KAAK,GAAG,aAAa,mBAAqB,OAG5C,GAGT,YAAa,CACX,MAAO,MAAK,GAAG,aAAa,mBAAqB,OAG3C,YAAY,EAAmB,CAErC,AAAI,EAAM,SAAW,KAAK,IAAM,EAAM,SAAW,KAAK,GAAG,mBAGrD,MAAK,cACP,CAAI,KAAK,cAAgB,KAAK,aAC5B,KAAK,KAAK,iBAAiB,MAE3B,KAAK,KAAK,eAAe,MAE3B,EAAM,mBAER,KAAK,KAAK,YAAY,OAGhB,aAAc,CAjXxB,MAkXI,GAAI,GAAK,KAAK,GACd,AAAI,KAAK,cACP,GAAM,KAAG,oBAAH,OAAwC,GAEhD,EAAG,UAAU,IAAI,SAGX,YAAa,CAzXvB,MA0XI,GAAI,GAAK,KAAK,GACd,AAAI,KAAK,cACP,GAAM,KAAG,oBAAH,OAAwC,GAEhD,EAAG,UAAU,OAAO,SAGd,cAAc,EAAsB,CAC1C,GAAI,EAAM,QAAU,EAAM,SAAW,EAAM,QACzC,OAGF,GAAI,GAAW,GACf,OAAQ,EAAM,SACP,QACA,QACH,AAAI,KAAK,aACP,CAAI,KAAK,cAAgB,KAAK,aAC5B,KAAK,KAAK,iBAAiB,MAE3B,KAAK,KAAK,eAAe,MAE3B,EAAW,IAEX,EAAM,kBAER,KAAK,KAAK,YAAY,MACtB,UAEG,UACH,KAAK,KAAK,uBAAuB,MACjC,EAAW,GACX,UAEG,YACH,KAAK,KAAK,mBAAmB,MAC7B,EAAW,GACX,UAEG,aACH,AAAI,KAAK,cACP,CAAI,KAAK,aACP,KAAK,KAAK,mBAAmB,MAE7B,KAAK,KAAK,eAAe,OAG7B,EAAW,GACX,UAEG,YACH,AAAI,KAAK,cAAgB,KAAK,aAC5B,MAAK,KAAK,iBAAiB,MAC3B,EAAW,IAEP,KAAK,WACP,MAAK,KAAK,qBAAqB,MAC/B,EAAW,IAGf,UAEG,OACH,KAAK,KAAK,sBACV,EAAW,GACX,UAEG,MACH,KAAK,KAAK,qBACV,EAAW,GACX,cAGA,AAAI,EAAM,IAAI,SAAW,GAAK,EAAM,IAAI,MAAM,OAC5C,CAAI,EAAM,KAAO,IACf,KAAK,KAAK,sBAAsB,MAEhC,KAAK,KAAK,yBAAyB,KAAM,EAAM,KAEjD,EAAW,IAEb,MAGJ,AAAI,GACF,GAAM,kBACN,EAAM,oBAMZ,WAAqD,EAAS,EAAc,CAC1E,GAAI,GACJ,MAAO,IAAI,IAAwB,CACjC,GAAM,GAAQ,IAAM,CAClB,EAAU,KACV,EAAK,GAAG,IAEV,AAAI,GACF,aAAa,GAEf,EAAU,WAAW,EAAO,IChehC,AAoBO,WAAoC,CAQzC,YAAoB,EAAiC,EAAsC,CAAvE,aAAiC,iBAmDrD,oBAAiB,IAAY,CAC3B,KAAK,QAAQ,IAAI,GAAK,EAAE,aAAa,gBAAiB,SACtD,KAAK,UAGC,sBAAmB,IAAM,CAC/B,KAAK,QAAQ,IAAI,GAAK,EAAE,aAAa,gBAAiB,UACtD,KAAK,UAGC,YAAS,IAAM,CACrB,KAAK,qBACL,WAAW,IAAM,KAAK,uBA9DtB,KAAK,KAAO,MAAM,KAAK,EAAM,iBAAsC,yBACnE,KAAK,QAAU,MAAM,KAAK,KAAK,MAAM,iBAAiB,oBACtD,KAAK,gBACL,KAAK,uBACL,KAAK,SAOC,eAAgB,CACtB,OAAW,KAAK,CAAC,qBAAsB,uBAAwB,WAC7D,KAAK,MAAM,iBAAiB,IAAI,MAAM,QAAQ,GAAK,CA1CzD,MA2CQ,EAAE,aAAa,EAAE,QAAQ,QAAS,IAAK,KAAE,aAAa,KAAf,OAAqB,IAC5D,EAAE,gBAAgB,KAKhB,sBAAuB,CAjDjC,MAkDI,KAAK,KAAK,QAAQ,GAAK,CACrB,EAAE,iBAAiB,QAAS,GAAK,CAC/B,KAAK,kBAAkB,OAG3B,QAAK,YAAL,QAAgB,iBAAiB,QAAS,IAAM,CAC9C,KAAK,mBAGP,SAAS,iBAAiB,UAAW,GAAK,CACxC,AAAK,GAAE,SAAW,EAAE,UAAY,EAAE,MAAQ,KACxC,KAAK,mBAKH,kBAAkB,EAAe,CACvC,GAAI,GAAS,EAAE,cACf,AAAK,kBAAQ,aAAa,mBACxB,GAAS,KAAK,MAAM,cAClB,yBAAyB,iBAAQ,aAAa,uBAGlD,GAAM,GAAa,kBAAQ,aAAa,oBAAqB,OAC7D,WAAQ,aAAa,gBAAiB,EAAa,QAAU,QAC7D,EAAE,kBACF,KAAK,SAkBC,oBAAqB,CAC3B,KAAK,KAAK,IAAI,GAAK,CA/FvB,MAgGM,GAAM,GAAa,kBAAG,aAAa,oBAAqB,OAClD,EAAS,oBAAG,aAAa,mBAAhB,cAAkC,UAAU,MAAM,KACjE,WAAQ,IAAI,GAAM,CAChB,GAAM,GAAS,SAAS,eAAe,GAAG,KAC1C,AAAI,EACF,YAAQ,UAAU,IAAI,WACtB,WAAQ,UAAU,OAAO,WAEzB,YAAQ,UAAU,IAAI,UACtB,WAAQ,UAAU,OAAO,gBAMzB,oBAAqB,CAC3B,GAAI,CAAC,KAAK,UAAW,OACrB,AAAI,KAAK,KAAK,KAAK,GAAK,EAAE,aAAa,mBACrC,MAAK,UAAU,MAAM,QAAU,SAGjC,AADsB,KAAK,QAAQ,KAAK,GAAM,EAAG,aAAa,mBAAqB,SAEjF,MAAK,UAAU,UAAY,aAC3B,KAAK,UAAU,QAAU,KAAK,gBAE9B,MAAK,UAAU,UAAY,eAC3B,KAAK,UAAU,QAAU,KAAK,oBCpHpC,IACA,IAEA,GAAM,GAAc,SAAS,cAAgC,uBAC7D,GAAI,EAAa,CACf,GAAM,GAAQ,GAAI,GAChB,EACA,SAAS,cAAiC,6BAG5C,AAAI,OAAO,SAAS,OAAO,SAAS,uBAClC,EAAM,iBAIV,GAAM,GAAS,SAAS,cAA2B,YACnD,GAAI,EAAQ,CACV,GAAM,GAAW,GAAI,GAAkB,GACjC,EAAS,EAAc,GACvB,EAAY,SAAS,cAAc,qBACzC,AAAI,GAAa,EAAU,mBACzB,YAAW,aAAa,EAAQ,EAAU,oBAExC,EAAO,mBACT,GAAI,GAAoB,EAAO,mBAOnC,GAAM,GAAS,SAAS,cAAc,cAChC,EAAgB,SAAS,cAAc,qBACvC,EAAgB,SAAS,cAAc,qBACvC,EAAe,SAAS,iBAAiB,oBACzC,EAAiB,SAAS,cAAc,sBACxC,EAAkB,SAAS,cAAiC,wBAClE,AAAI,GAAU,GAAiB,GAAiB,EAAa,QAAU,GACjE,QAAO,SAAS,KAAK,SAAS,WAChC,EAAO,UAAU,IAAI,wBAEvB,WAAiB,iBAAiB,SAAU,GAAK,CAC/C,AAAK,EAAE,OAA6B,MAAM,WAAW,YACnD,EAAO,UAAU,IAAI,0BAGzB,EAAa,QAAQ,GACnB,EAAG,iBAAiB,QAAS,GAAK,CAChC,EAAE,iBACF,EAAO,UAAU,IAAI,wBACrB,EAAO,oBAGX,EAAe,iBAAiB,QAAS,GAAK,CAC5C,EAAE,iBACF,EAAO,UAAU,OAAO,wBACpB,EAAa,IACf,EAAa,GAAG,eAAe,CAAE,MAAO,aAG5C,EAAc,iBAAiB,QAAS,IAAM,CAC5C,EAAO,UAAU,IAAI,0BAEvB,EAAc,iBAAiB,QAAS,IAAM,CAC5C,EAAO,UAAU,IAAI,0BAEvB,EAAc,iBAAiB,QAAS,IAAM,CAC5C,EAAO,UAAU,IAAI,0BAEvB,SAAS,iBAAiB,UAAW,GAAK,CACxC,AAAK,GAAE,SAAW,EAAE,UAAY,EAAE,MAAQ,KACxC,EAAO,UAAU,IAAI,2BAU3B,YAAgC,CAvFhC,MAwFE,GAAI,CAAC,SAAS,KAAM,OACpB,GAAM,GAAU,SAAS,eAAe,SAAS,KAAK,MAAM,IACtD,EAAc,oBAAS,gBAAT,cAAwB,cAC5C,AAAI,kBAAa,YAAa,WAC5B,GAAY,KAAO,IAGvB,IACA,OAAO,iBAAiB,aAAc,IAAM,KAK5C,SAAS,iBAAiB,0BAA0B,QAAQ,GAAM,CAChE,EAAG,iBAAiB,SAAU,GAAK,CACjC,OAAO,SAAS,OAAS,SAAU,EAAE,OAA6B",
+  "sources": ["../../../shared/playground/playground.ts", "../../../shared/analytics/analytics.ts", "../../../shared/keyboard/keyboard.ts", "../../../shared/jump/jump.ts", "../../../shared/outline/select.ts", "../../../shared/outline/tree.ts", "../../../shared/table/table.ts", "main.ts"],
+  "sourcesContent": ["/*!\n * @license\n * Copyright 2021 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// This file implements the playground implementation of the documentation\n// page. The playground involves a \"play\" button that allows you to open up\n// a new link to play.golang.org using the example code.\n\n// The CSS is in static/frontend/unit/main/_doc.css\n\n/**\n * CSS classes used by PlaygroundExampleController\n */\nconst PlayExampleClassName = {\n  PLAY_HREF: '.js-exampleHref',\n  PLAY_CONTAINER: '.js-exampleContainer',\n  EXAMPLE_INPUT: '.Documentation-exampleCode',\n  EXAMPLE_OUTPUT: '.Documentation-exampleOutput',\n  EXAMPLE_ERROR: '.Documentation-exampleError',\n  PLAY_BUTTON: '.Documentation-examplePlayButton',\n  SHARE_BUTTON: '.Documentation-exampleShareButton',\n  FORMAT_BUTTON: '.Documentation-exampleFormatButton',\n  RUN_BUTTON: '.Documentation-exampleRunButton',\n};\n\n/**\n * This controller enables playground examples to expand their dropdown or\n * generate shareable Go Playground URLs.\n */\nexport class PlaygroundExampleController {\n  /**\n   * The anchor tag used to identify the container with an example href.\n   * There is only one in an example container div.\n   */\n  private readonly anchorEl: HTMLAnchorElement | null;\n\n  /**\n   * The error element\n   */\n  private readonly errorEl: Element | null;\n\n  /**\n   * Buttons that redirect to an example's playground, this element\n   * only exists in executable examples.\n   */\n  private readonly playButtonEl: Element | null;\n  private readonly shareButtonEl: Element | null;\n\n  /**\n   * Button that formats the code in an example's playground.\n   */\n  private readonly formatButtonEl: Element | null;\n\n  /**\n   * Button that runs the code in an example's playground, this element\n   * only exists in executable examples.\n   */\n  private readonly runButtonEl: Element | null;\n\n  /**\n   * The executable code of an example.\n   */\n  private readonly inputEl: HTMLTextAreaElement | null;\n\n  /**\n   * The output of the given example code. This only exists if the\n   * author of the package provides an output for this example.\n   */\n  private readonly outputEl: Element | null;\n\n  /**\n   * @param exampleEl The div that contains playground content for the given example.\n   */\n  constructor(private readonly exampleEl: HTMLDetailsElement) {\n    this.exampleEl = exampleEl;\n    this.anchorEl = exampleEl.querySelector('a');\n    this.errorEl = exampleEl.querySelector(PlayExampleClassName.EXAMPLE_ERROR);\n    this.playButtonEl = exampleEl.querySelector(PlayExampleClassName.PLAY_BUTTON);\n    this.shareButtonEl = exampleEl.querySelector(PlayExampleClassName.SHARE_BUTTON);\n    this.formatButtonEl = exampleEl.querySelector(PlayExampleClassName.FORMAT_BUTTON);\n    this.runButtonEl = exampleEl.querySelector(PlayExampleClassName.RUN_BUTTON);\n    this.inputEl = this.makeTextArea(exampleEl.querySelector(PlayExampleClassName.EXAMPLE_INPUT));\n    this.outputEl = exampleEl.querySelector(PlayExampleClassName.EXAMPLE_OUTPUT);\n\n    // This is legacy listener to be replaced the listener for shareButtonEl.\n    this.playButtonEl?.addEventListener('click', () => this.handleShareButtonClick());\n    this.shareButtonEl?.addEventListener('click', () => this.handleShareButtonClick());\n    this.formatButtonEl?.addEventListener('click', () => this.handleFormatButtonClick());\n    this.runButtonEl?.addEventListener('click', () => this.handleRunButtonClick());\n\n    if (!this.inputEl) return;\n\n    this.resize();\n    this.inputEl.addEventListener('keyup', () => this.resize());\n    this.inputEl.addEventListener('keydown', e => this.onKeydown(e));\n  }\n\n  /**\n   * Replace the pre element with a textarea. The examples are initially rendered\n   * as pre elements so they're fully visible when JS is disabled.\n   */\n  makeTextArea(el: Element | null): HTMLTextAreaElement {\n    const t = document.createElement('textarea');\n    t.classList.add('Documentation-exampleCode', 'code');\n    t.spellcheck = false;\n    t.value = el?.textContent ?? '';\n    el?.parentElement?.replaceChild(t, el);\n    return t;\n  }\n\n  /**\n   * Retrieve the hash value of the anchor element.\n   */\n  getAnchorHash(): string | undefined {\n    return this.anchorEl?.hash;\n  }\n\n  /**\n   * Expands the current playground example.\n   */\n  expand(): void {\n    this.exampleEl.open = true;\n  }\n\n  /**\n   * Resizes the input element to accomodate the amount of text present.\n   */\n  private resize(): void {\n    if (this.inputEl?.value) {\n      const numLineBreaks = (this.inputEl.value.match(/\\n/g) || []).length;\n      // min-height + lines x line-height + padding + border\n      this.inputEl.style.height = `${(20 + numLineBreaks * 20 + 12 + 2) / 16}rem`;\n    }\n  }\n\n  /**\n   * Handler to override keyboard behavior in the playground's\n   * textarea element.\n   *\n   * Tab key inserts tabs into the example playground instead of\n   * switching to the next interactive element.\n   * @param e input element keyboard event.\n   */\n  private onKeydown(e: KeyboardEvent) {\n    if (e.key === 'Tab') {\n      document.execCommand('insertText', false, '\\t');\n      e.preventDefault();\n    }\n  }\n\n  /**\n   * Changes the text of the example's input box.\n   */\n  private setInputText(output: string) {\n    if (this.inputEl) {\n      this.inputEl.value = output;\n    }\n  }\n\n  /**\n   * Changes the text of the example's output box.\n   */\n  private setOutputText(output: string) {\n    if (this.outputEl) {\n      this.outputEl.textContent = output;\n    }\n  }\n\n  /**\n   * Sets the error message text and overwrites\n   * output box to indicate a failed response.\n   */\n  private setErrorText(err: string) {\n    if (this.errorEl) {\n      this.errorEl.textContent = err;\n    }\n    this.setOutputText('An error has occurred\u2026');\n  }\n\n  /**\n   * Opens a new window to play.golang.org using the\n   * example snippet's code in the playground.\n   */\n  private handleShareButtonClick() {\n    const PLAYGROUND_BASE_URL = 'https://play.golang.org/p/';\n\n    this.setOutputText('Waiting for remote server\u2026');\n\n    fetch('/play/share', {\n      method: 'POST',\n      body: this.inputEl?.value,\n    })\n      .then(res => res.text())\n      .then(shareId => {\n        const href = PLAYGROUND_BASE_URL + shareId;\n        this.setOutputText(`<a href=\"${href}\">${href}</a>`);\n        window.open(href);\n      })\n      .catch(err => {\n        this.setErrorText(err);\n      });\n  }\n\n  /**\n   * Runs gofmt on the example snippet in the playground.\n   */\n  private handleFormatButtonClick() {\n    this.setOutputText('Waiting for remote server\u2026');\n    const body = new FormData();\n    body.append('body', this.inputEl?.value ?? '');\n\n    fetch('/play/fmt', {\n      method: 'POST',\n      body: body,\n    })\n      .then(res => res.json())\n      .then(({ Body, Error }) => {\n        this.setOutputText(Error || 'Done.');\n        if (Body) {\n          this.setInputText(Body);\n          this.resize();\n        }\n      })\n      .catch(err => {\n        this.setErrorText(err);\n      });\n  }\n\n  /**\n   * Runs the code snippet in the example playground.\n   */\n  private handleRunButtonClick() {\n    this.setOutputText('Waiting for remote server\u2026');\n\n    fetch('/play/compile', {\n      method: 'POST',\n      body: JSON.stringify({ body: this.inputEl?.value, version: 2 }),\n    })\n      .then(res => res.json())\n      .then(async ({ Events, Errors }) => {\n        this.setOutputText(Errors || '');\n        for (const e of Events || []) {\n          this.setOutputText(e.Message);\n          await new Promise(resolve => setTimeout(resolve, e.Delay / 1000000));\n        }\n      })\n      .catch(err => {\n        this.setErrorText(err);\n      });\n  }\n}\n\nexport function initPlaygrounds(): void {\n  const exampleHashRegex = location.hash.match(/^#(example-.*)$/);\n  if (exampleHashRegex) {\n    const exampleHashEl = document.getElementById(exampleHashRegex[1]) as HTMLDetailsElement;\n    if (exampleHashEl) {\n      exampleHashEl.open = true;\n    }\n  }\n\n  // We use a spread operator to convert a nodelist into an array of elements.\n  const exampleHrefs = [\n    ...document.querySelectorAll<HTMLAnchorElement>(PlayExampleClassName.PLAY_HREF),\n  ];\n\n  /**\n   * Sometimes exampleHrefs and playContainers are in different order, so we\n   * find an exampleHref from a common hash.\n   * @param playContainer - playground container\n   */\n  const findExampleHash = (playContainer: PlaygroundExampleController) =>\n    exampleHrefs.find(ex => {\n      return ex.hash === playContainer.getAnchorHash();\n    });\n\n  for (const el of document.querySelectorAll(PlayExampleClassName.PLAY_CONTAINER)) {\n    // There should be the same amount of hrefs referencing examples as example containers.\n    const playContainer = new PlaygroundExampleController(el as HTMLDetailsElement);\n    const exampleHref = findExampleHash(playContainer);\n    if (exampleHref) {\n      exampleHref.addEventListener('click', () => {\n        playContainer.expand();\n      });\n    } else {\n      console.warn('example href not found');\n    }\n  }\n}\n", "interface TagManagerEvent {\n  /**\n   * event is the name of the event, used to filter events in\n   * Google Analytics.\n   */\n  event: string;\n\n  /**\n   * event_category is a name that you supply as a way to group objects\n   * that to analyze. Typically, you will use the same category name\n   * multiple times over related UI elements (buttons, links, etc).\n   */\n  event_category?: string;\n\n  /**\n   * event_action is used to name the type of event or interaction you\n   * want to measure for a particular web object. For example, with a\n   * single \"form\" category, you can analyze a number of specific events\n   * with this parameter, such as: form entered, form submitted.\n   */\n  event_action?: string;\n\n  /**\n   * event_label provide additional information for events that you want\n   * to analyze, such as the text label of a link.\n   */\n  event_label?: string;\n\n  /**\n   * gtm.start is used to initialize Google Tag Manager.\n   */\n  'gtm.start'?: number;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-unused-vars\ndeclare global {\n  interface Window {\n    dataLayer?: (TagManagerEvent | VoidFunction)[];\n    ga?: unknown;\n  }\n}\n\n/**\n * track sends events to Google Tag Manager.\n */\nexport function track(\n  event: string | TagManagerEvent,\n  category?: string,\n  action?: string,\n  label?: string\n): void {\n  window.dataLayer ??= [];\n  if (typeof event === 'string') {\n    window.dataLayer.push({\n      event,\n      event_category: category,\n      event_action: action,\n      event_label: label,\n    });\n  } else {\n    window.dataLayer.push(event);\n  }\n}\n\n/**\n * func adds functions to run sequentionally after\n * Google Tag Manager is ready.\n */\nexport function func(fn: () => void): void {\n  window.dataLayer ??= [];\n  window.dataLayer.push(fn);\n}\n", "/*!\n * @license\n * Copyright 2019-2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\nimport { track } from '../analytics/analytics';\n\n/**\n * Options are keyhandler callback options.\n */\ninterface Options {\n  /**\n   * target is the element the key event should filter on. The\n   * default target is the document.\n   */\n  target?: Element;\n\n  /**\n   * withMeta specifies if the event callback should fire when\n   * the key is pressed with a meta key (ctrl, alt, etc). By\n   * default meta keypresses are ignored.\n   */\n  withMeta?: boolean;\n}\n\n/**\n * KeyHandler is the config for a keyboard event callback.\n */\ninterface KeyHandler extends Options {\n  description: string;\n  callback: (e: KeyboardEvent) => void;\n}\n\n/**\n * KeyboardController controls event callbacks for sitewide\n * keyboard events. Multiple callbacks can be registered for\n * a single key and by default the controller ignores events\n * for text input targets.\n */\nclass KeyboardController {\n  handlers: Record<string, Set<KeyHandler>>;\n\n  constructor() {\n    this.handlers = {};\n    document.addEventListener('keydown', e => this.handleKeyPress(e));\n  }\n\n  /**\n   * on registers keyboard event callbacks.\n   * @param key the key to register.\n   * @param description name of the event.\n   * @param callback event callback.\n   * @param options set target and withMeta options to override the default behaviors.\n   */\n  on(key: string, description: string, callback: (e: KeyboardEvent) => void, options?: Options) {\n    this.handlers[key] ??= new Set();\n    this.handlers[key].add({ description, callback, ...options });\n    return this;\n  }\n\n  private handleKeyPress(e: KeyboardEvent) {\n    for (const handler of this.handlers[e.key.toLowerCase()] ?? new Set()) {\n      if (handler.target && handler.target !== e.target) {\n        return;\n      }\n      const t = e.target as HTMLElement | null;\n      if (\n        !handler.target &&\n        (t?.tagName === 'INPUT' || t?.tagName === 'SELECT' || t?.tagName === 'TEXTAREA')\n      ) {\n        return;\n      }\n      if (t?.isContentEditable) {\n        return;\n      }\n      if (\n        (handler.withMeta && !(e.ctrlKey || e.metaKey)) ||\n        (!handler.withMeta && (e.ctrlKey || e.metaKey))\n      ) {\n        return;\n      }\n      track('keypress', 'hotkeys', `${e.key} pressed`, handler.description);\n      handler.callback(e);\n    }\n  }\n}\n\nexport const keyboard = new KeyboardController();\n", "/*!\n * @license\n * Copyright 2019-2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// This file implements the behavior of the \"jump to symbol\" dialog for Go\n// package documentation, as well as the simple dialog that displays keyboard\n// shortcuts.\n\n// The DOM for the dialogs is at the bottom of static/frontend/unit/main/_modals.tmpl.\n// The CSS is in static/frontend/unit/main/_modals.css.\n\n// The dialog is activated by pressing the 'f' key. It presents a list\n// (#JumpDialog-list) of all Go symbols displayed in the documentation.\n// Entering text in the dialog's text box (#JumpDialog-filter) restricts the\n// list to symbols containing the text. Clicking on an symbol jumps to\n// its documentation.\n\n// This code is based on\n// https://go.googlesource.com/gddo/+/refs/heads/master/gddo-server/assets/site.js.\n// It was modified to remove the dependence on jquery and bootstrap.\n\nimport { keyboard } from '../keyboard/keyboard';\n\nconst jumpDialog = document.querySelector<HTMLDialogElement>('.JumpDialog');\nconst jumpBody = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-body');\nconst jumpList = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-list');\nconst jumpFilter = jumpDialog?.querySelector<HTMLInputElement>('.JumpDialog-input');\nconst doc = document.querySelector<HTMLDivElement>('.js-documentation');\n\ninterface JumpListItem {\n  link: HTMLAnchorElement;\n  name: string;\n  kind: string;\n  lower: string;\n}\n\nlet jumpListItems: JumpListItem[] | undefined; // All the symbols in the doc; computed only once.\n\n// collectJumpListItems returns a list of items, one for each symbol in the\n// documentation on the current page.\n//\n// It uses the data-kind attribute generated in the documentation HTML to find\n// the symbols and their id attributes.\n//\n// If there are no data-kind attributes, then we have older doc; fall back to\n// a less precise method.\nfunction collectJumpListItems() {\n  const items = [];\n  if (!doc) return;\n  for (const el of doc.querySelectorAll('[data-kind]')) {\n    items.push(newJumpListItem(el));\n  }\n\n  // Clicking on any of the links closes the dialog.\n  for (const item of items) {\n    item.link.addEventListener('click', function () {\n      jumpDialog?.close();\n    });\n  }\n  // Sort case-insensitively by symbol name.\n  items.sort(function (a, b) {\n    return a.lower.localeCompare(b.lower);\n  });\n  return items;\n}\n\n// newJumpListItem creates a new item for the DOM element el.\n// An item is an object with:\n// - name: the element's id (which is the symbol name)\n// - kind: the element's kind (function, variable, etc.),\n// - link: a link ('a' tag) to the element\n// - lower: the name in lower case, just for sorting\nfunction newJumpListItem(el: Element): JumpListItem {\n  const a = document.createElement('a');\n  const name = el.getAttribute('id');\n  a.setAttribute('href', '#' + name);\n  a.setAttribute('tabindex', '-1');\n  a.setAttribute('data-gtmc', 'jump to link');\n  const kind = el.getAttribute('data-kind');\n  return {\n    link: a,\n    name: name ?? '',\n    kind: kind ?? '',\n    lower: name?.toLowerCase() ?? '', // for sorting\n  };\n}\n\nlet lastFilterValue: string; // The last contents of the filter text box.\nlet activeJumpItem = -1; // The index of the currently active item in the list.\n\n// updateJumpList sets the elements of the dialog list to\n// everything whose name contains filter.\nfunction updateJumpList(filter: string) {\n  lastFilterValue = filter;\n  if (!jumpListItems) {\n    jumpListItems = collectJumpListItems();\n  }\n  setActiveJumpItem(-1);\n\n  // Remove all children from list.\n  while (jumpList?.firstChild) {\n    jumpList.firstChild.remove();\n  }\n\n  if (filter) {\n    // A filter is set. We treat the filter as a substring that can appear in\n    // an item name (case insensitive), and find the following matches - in\n    // order of priority:\n    //\n    // 1. Exact matches (the filter matches the item's name exactly)\n    // 2. Prefix matches (the item's name starts with filter)\n    // 3. Infix matches (the filter is a substring of the item's name)\n    const filterLowerCase = filter.toLowerCase();\n\n    const exactMatches = [];\n    const prefixMatches = [];\n    const infixMatches = [];\n\n    // makeLinkHtml creates the link name HTML for a list item. item is the DOM\n    // item. item.name.substr(boldStart, boldEnd) will be bolded.\n    const makeLinkHtml = (item: JumpListItem, boldStart: number, boldEnd: number) => {\n      return (\n        item.name.substring(0, boldStart) +\n        '<b>' +\n        item.name.substring(boldStart, boldEnd) +\n        '</b>' +\n        item.name.substring(boldEnd)\n      );\n    };\n\n    for (const item of jumpListItems ?? []) {\n      const nameLowerCase = item.name.toLowerCase();\n\n      if (nameLowerCase === filterLowerCase) {\n        item.link.innerHTML = makeLinkHtml(item, 0, item.name.length);\n        exactMatches.push(item);\n      } else if (nameLowerCase.startsWith(filterLowerCase)) {\n        item.link.innerHTML = makeLinkHtml(item, 0, filter.length);\n        prefixMatches.push(item);\n      } else {\n        const index = nameLowerCase.indexOf(filterLowerCase);\n        if (index > -1) {\n          item.link.innerHTML = makeLinkHtml(item, index, index + filter.length);\n          infixMatches.push(item);\n        }\n      }\n    }\n\n    for (const item of exactMatches.concat(prefixMatches).concat(infixMatches)) {\n      jumpList?.appendChild(item.link);\n    }\n  } else {\n    if (!jumpListItems || jumpListItems.length === 0) {\n      const msg = document.createElement('i');\n      msg.innerHTML = 'There are no symbols on this page.';\n      jumpList?.appendChild(msg);\n    }\n    // No filter set; display all items in their existing order.\n    for (const item of jumpListItems ?? []) {\n      item.link.innerHTML = item.name + ' <i>' + item.kind + '</i>';\n      jumpList?.appendChild(item.link);\n    }\n  }\n\n  if (jumpBody) {\n    jumpBody.scrollTop = 0;\n  }\n  if (jumpListItems?.length && jumpList && jumpList.children.length > 0) {\n    setActiveJumpItem(0);\n  }\n}\n\n// Set the active jump item to n.\nfunction setActiveJumpItem(n: number) {\n  const cs = jumpList?.children as HTMLCollectionOf<HTMLElement> | null | undefined;\n  if (!cs || !jumpBody) {\n    return;\n  }\n  if (activeJumpItem >= 0) {\n    cs[activeJumpItem].classList.remove('JumpDialog-active');\n  }\n  if (n >= cs.length) {\n    n = cs.length - 1;\n  }\n  if (n >= 0) {\n    cs[n].classList.add('JumpDialog-active');\n\n    // Scroll so the active item is visible.\n    // For some reason cs[n].scrollIntoView() doesn't behave as I'd expect:\n    // it moves the entire dialog box in the viewport.\n\n    // Get the top and bottom of the active item relative to jumpBody.\n    const activeTop = cs[n].offsetTop - cs[0].offsetTop;\n    const activeBottom = activeTop + cs[n].clientHeight;\n    if (activeTop < jumpBody.scrollTop) {\n      // Off the top; scroll up.\n      jumpBody.scrollTop = activeTop;\n    } else if (activeBottom > jumpBody.scrollTop + jumpBody.clientHeight) {\n      // Off the bottom; scroll down.\n      jumpBody.scrollTop = activeBottom - jumpBody.clientHeight;\n    }\n  }\n  activeJumpItem = n;\n}\n\n// Increment the activeJumpItem by delta.\nfunction incActiveJumpItem(delta: number) {\n  if (activeJumpItem < 0) {\n    return;\n  }\n  let n = activeJumpItem + delta;\n  if (n < 0) {\n    n = 0;\n  }\n  setActiveJumpItem(n);\n}\n\nexport function initModals(): void {\n  // Pressing a key in the filter updates the list (if the filter actually changed).\n  jumpFilter?.addEventListener('keyup', function () {\n    if (jumpFilter.value.toUpperCase() != lastFilterValue.toUpperCase()) {\n      updateJumpList(jumpFilter.value);\n    }\n  });\n\n  // Pressing enter in the filter selects the first element in the list.\n  jumpFilter?.addEventListener('keydown', function (event) {\n    const upArrow = 38;\n    const downArrow = 40;\n    const enterKey = 13;\n    switch (event.which) {\n      case upArrow:\n        incActiveJumpItem(-1);\n        event.preventDefault();\n        break;\n      case downArrow:\n        incActiveJumpItem(1);\n        event.preventDefault();\n        break;\n      case enterKey:\n        if (activeJumpItem >= 0) {\n          if (jumpList) {\n            (jumpList.children[activeJumpItem] as HTMLElement).click();\n            event.preventDefault();\n          }\n        }\n        break;\n    }\n  });\n\n  const shortcutsDialog = document.querySelector<HTMLDialogElement>('.ShortcutsDialog');\n\n  // - Pressing 'f' or 'F' opens the jump-to-symbol dialog.\n  // - Pressing '?' opens up the shortcut dialog.\n  // Ignore a keypress if a dialog is already open, or if it is pressed on a\n  // component that wants to consume it.\n  keyboard\n    .on('f', 'open jump to modal', e => {\n      if (jumpDialog?.open || shortcutsDialog?.open) {\n        return;\n      }\n      e.preventDefault();\n      if (jumpFilter) {\n        jumpFilter.value = '';\n      }\n      jumpDialog?.showModal();\n      jumpFilter?.focus();\n      updateJumpList('');\n    })\n    .on('?', 'open shortcuts modal', () => {\n      if (jumpDialog?.open || shortcutsDialog?.open) {\n        return;\n      }\n      shortcutsDialog?.showModal();\n    });\n\n  const jumpOutlineInput = document.querySelector('.js-jumpToInput');\n  if (jumpOutlineInput) {\n    jumpOutlineInput.addEventListener('click', () => {\n      if (jumpFilter) {\n        jumpFilter.value = '';\n      }\n      updateJumpList('');\n    });\n  }\n}\n", "/**\n * @license\n * Copyright 2021 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\nimport { TreeNavController } from './tree.js';\n\nexport class SelectNavController {\n  constructor(private el: Element) {\n    this.el.addEventListener('change', e => {\n      const target = e.target as HTMLSelectElement;\n      let href = target.value;\n      if (!target.value.startsWith('/')) {\n        href = '/' + href;\n      }\n      window.location.href = href;\n    });\n  }\n}\n\nexport function makeSelectNav(tree: TreeNavController): HTMLLabelElement {\n  const label = document.createElement('label');\n  label.classList.add('go-Label');\n  label.setAttribute('aria-label', 'Menu');\n  const select = document.createElement('select');\n  select.classList.add('go-Select', 'js-selectNav');\n  label.appendChild(select);\n  const outline = document.createElement('optgroup');\n  outline.label = 'Outline';\n  select.appendChild(outline);\n  const groupMap: Record<string, HTMLOptGroupElement> = {};\n  let group: HTMLOptGroupElement;\n  for (const t of tree.treeitems) {\n    if (Number(t.depth) > 4) continue;\n    if (t.groupTreeitem) {\n      group = groupMap[t.groupTreeitem.label];\n      if (!group) {\n        group = groupMap[t.groupTreeitem.label] = document.createElement('optgroup');\n        group.label = t.groupTreeitem.label;\n        select.appendChild(group);\n      }\n    } else {\n      group = outline;\n    }\n    const o = document.createElement('option');\n    o.label = t.label;\n    o.textContent = t.label;\n    o.value = (t.el as HTMLAnchorElement).href.replace(window.location.origin, '').replace('/', '');\n    group.appendChild(o);\n  }\n  tree.addObserver(t => {\n    const hash = (t.el as HTMLAnchorElement).hash;\n    const value = select.querySelector<HTMLOptionElement>(`[value$=\"${hash}\"]`)?.value;\n    if (value) {\n      select.value = value;\n    }\n  }, 50);\n  return label;\n}\n", "/**\n * @license\n * Copyright 2021 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/**\n * TreeNavController is the navigation tree component of the documentation page.\n * It adds accessiblity attributes to a tree, observes the heading elements\n * focus the topmost link for headings visible on the page, and implements the\n * WAI-ARIA Treeview Design Pattern with full\n * [keyboard support](https://www.w3.org/TR/wai-aria-practices/examples/treeview/treeview-2/treeview-2a.html#kbd_label).\n */\nexport class TreeNavController {\n  treeitems: TreeItem[];\n\n  /**\n   * firstChars is the first character of each treeitem in the same order\n   * as this.treeitems. We use this array to set focus by character when\n   * navigating the tree with a keyboard.\n   */\n  private firstChars: string[];\n  private firstTreeitem: TreeItem | null;\n  private lastTreeitem: TreeItem | null;\n  private observerCallbacks: ((t: TreeItem) => void)[];\n\n  constructor(private el: HTMLElement) {\n    this.treeitems = [];\n    this.firstChars = [];\n    this.firstTreeitem = null;\n    this.lastTreeitem = null;\n    this.observerCallbacks = [];\n    this.init();\n  }\n\n  private init(): void {\n    this.handleResize();\n    window.addEventListener('resize', this.handleResize);\n    this.findTreeItems();\n    this.updateVisibleTreeitems();\n    this.observeTargets();\n    if (this.firstTreeitem) {\n      this.firstTreeitem.el.tabIndex = 0;\n    }\n  }\n\n  private handleResize = (): void => {\n    this.el.style.setProperty('--js-tree-height', '100vh');\n    this.el.style.setProperty('--js-tree-height', this.el.clientHeight + 'px');\n  };\n\n  private observeTargets() {\n    this.addObserver(treeitem => {\n      this.expandTreeitem(treeitem);\n      this.setSelected(treeitem);\n      // TODO: Fix scroll issue in https://golang.org/issue/47450.\n      // treeitem.el.scrollIntoView({ block: 'nearest' });\n    });\n\n    const targets = new Map<string, boolean>();\n    const observer = new IntersectionObserver(\n      entries => {\n        for (const entry of entries) {\n          targets.set(entry.target.id, entry.isIntersecting || entry.intersectionRatio === 1);\n        }\n        for (const [id, isIntersecting] of targets) {\n          if (isIntersecting) {\n            const active = this.treeitems.find(t =>\n              (t.el as HTMLAnchorElement)?.href.endsWith(`#${id}`)\n            );\n            if (active) {\n              for (const fn of this.observerCallbacks) {\n                fn(active);\n              }\n            }\n            break;\n          }\n        }\n      },\n      {\n        threshold: 1.0,\n        rootMargin: '-60px 0px 0px 0px',\n      }\n    );\n\n    for (const href of this.treeitems.map(t => t.el.getAttribute('href'))) {\n      if (href) {\n        const id = href.replace(window.location.origin, '').replace('/', '').replace('#', '');\n        const target = document.getElementById(id);\n        if (target) {\n          observer.observe(target);\n        }\n      }\n    }\n  }\n\n  addObserver(fn: (t: TreeItem) => void, delay = 200): void {\n    this.observerCallbacks.push(debounce(fn, delay));\n  }\n\n  setFocusToNextItem(currentItem: TreeItem): void {\n    let nextItem = null;\n    for (let i = currentItem.index + 1; i < this.treeitems.length; i++) {\n      const ti = this.treeitems[i];\n      if (ti.isVisible) {\n        nextItem = ti;\n        break;\n      }\n    }\n    if (nextItem) {\n      this.setFocusToItem(nextItem);\n    }\n  }\n\n  setFocusToPreviousItem(currentItem: TreeItem): void {\n    let prevItem = null;\n    for (let i = currentItem.index - 1; i > -1; i--) {\n      const ti = this.treeitems[i];\n      if (ti.isVisible) {\n        prevItem = ti;\n        break;\n      }\n    }\n    if (prevItem) {\n      this.setFocusToItem(prevItem);\n    }\n  }\n\n  setFocusToParentItem(currentItem: TreeItem): void {\n    if (currentItem.groupTreeitem) {\n      this.setFocusToItem(currentItem.groupTreeitem);\n    }\n  }\n\n  setFocusToFirstItem(): void {\n    this.firstTreeitem && this.setFocusToItem(this.firstTreeitem);\n  }\n\n  setFocusToLastItem(): void {\n    this.lastTreeitem && this.setFocusToItem(this.lastTreeitem);\n  }\n\n  setSelected(currentItem: TreeItem): void {\n    for (const l1 of this.el.querySelectorAll('[aria-expanded=\"true\"]')) {\n      if (l1 === currentItem.el) continue;\n      if (!l1.nextElementSibling?.contains(currentItem.el)) {\n        l1.setAttribute('aria-expanded', 'false');\n      }\n    }\n    for (const l1 of this.el.querySelectorAll('[aria-selected]')) {\n      if (l1 !== currentItem.el) {\n        l1.setAttribute('aria-selected', 'false');\n      }\n    }\n    currentItem.el.setAttribute('aria-selected', 'true');\n    this.updateVisibleTreeitems();\n    this.setFocusToItem(currentItem, false);\n  }\n\n  expandTreeitem(treeitem: TreeItem): void {\n    let currentItem: TreeItem | null = treeitem;\n    while (currentItem) {\n      if (currentItem.isExpandable) {\n        currentItem.el.setAttribute('aria-expanded', 'true');\n      }\n      currentItem = currentItem.groupTreeitem;\n    }\n    this.updateVisibleTreeitems();\n  }\n\n  expandAllSiblingItems(currentItem: TreeItem): void {\n    for (const ti of this.treeitems) {\n      if (ti.groupTreeitem === currentItem.groupTreeitem && ti.isExpandable) {\n        this.expandTreeitem(ti);\n      }\n    }\n  }\n\n  collapseTreeitem(currentItem: TreeItem): void {\n    let groupTreeitem = null;\n\n    if (currentItem.isExpanded()) {\n      groupTreeitem = currentItem;\n    } else {\n      groupTreeitem = currentItem.groupTreeitem;\n    }\n\n    if (groupTreeitem) {\n      groupTreeitem.el.setAttribute('aria-expanded', 'false');\n      this.updateVisibleTreeitems();\n      this.setFocusToItem(groupTreeitem);\n    }\n  }\n\n  setFocusByFirstCharacter(currentItem: TreeItem, char: string): void {\n    let start: number, index: number;\n    char = char.toLowerCase();\n\n    // Get start index for search based on position of currentItem\n    start = currentItem.index + 1;\n    if (start === this.treeitems.length) {\n      start = 0;\n    }\n\n    // Check remaining slots in the menu\n    index = this.getIndexFirstChars(start, char);\n\n    // If not found in remaining slots, check from beginning\n    if (index === -1) {\n      index = this.getIndexFirstChars(0, char);\n    }\n\n    // If match was found...\n    if (index > -1) {\n      this.setFocusToItem(this.treeitems[index]);\n    }\n  }\n\n  private findTreeItems() {\n    const findItems = (el: HTMLElement, group: TreeItem | null) => {\n      let ti = group;\n      let curr = el.firstElementChild as HTMLElement;\n      while (curr) {\n        if (curr.tagName === 'A' || curr.tagName === 'SPAN') {\n          ti = new TreeItem(curr, this, group);\n          this.treeitems.push(ti);\n          this.firstChars.push(ti.label.substring(0, 1).toLowerCase());\n        }\n        if (curr.firstElementChild) {\n          findItems(curr, ti);\n        }\n        curr = curr.nextElementSibling as HTMLElement;\n      }\n    };\n    findItems(this.el as HTMLElement, null);\n    this.treeitems.map((ti, idx) => (ti.index = idx));\n  }\n\n  private updateVisibleTreeitems(): void {\n    this.firstTreeitem = this.treeitems[0];\n\n    for (const ti of this.treeitems) {\n      let parent = ti.groupTreeitem;\n      ti.isVisible = true;\n      while (parent && parent.el !== this.el) {\n        if (!parent.isExpanded()) {\n          ti.isVisible = false;\n        }\n        parent = parent.groupTreeitem;\n      }\n      if (ti.isVisible) {\n        this.lastTreeitem = ti;\n      }\n    }\n  }\n\n  private setFocusToItem(treeitem: TreeItem, focusEl = true) {\n    treeitem.el.tabIndex = 0;\n    if (focusEl) {\n      treeitem.el.focus();\n    }\n    for (const ti of this.treeitems) {\n      if (ti !== treeitem) {\n        ti.el.tabIndex = -1;\n      }\n    }\n  }\n\n  private getIndexFirstChars(startIndex: number, char: string): number {\n    for (let i = startIndex; i < this.firstChars.length; i++) {\n      if (this.treeitems[i].isVisible && char === this.firstChars[i]) {\n        return i;\n      }\n    }\n    return -1;\n  }\n}\n\nclass TreeItem {\n  el: HTMLElement;\n  groupTreeitem: TreeItem | null;\n  label: string;\n  isExpandable: boolean;\n  isVisible: boolean;\n  depth: number;\n  index: number;\n\n  private tree: TreeNavController;\n  private isInGroup: boolean;\n\n  constructor(el: HTMLElement, treeObj: TreeNavController, group: TreeItem | null) {\n    el.tabIndex = -1;\n    this.el = el;\n    this.groupTreeitem = group;\n    this.label = el.textContent?.trim() ?? '';\n    this.tree = treeObj;\n    this.depth = (group?.depth || 0) + 1;\n    this.index = 0;\n\n    const parent = el.parentElement;\n    if (parent?.tagName.toLowerCase() === 'li') {\n      parent?.setAttribute('role', 'none');\n    }\n    el.setAttribute('aria-level', this.depth + '');\n    if (el.getAttribute('aria-label')) {\n      this.label = el?.getAttribute('aria-label')?.trim() ?? '';\n    }\n\n    this.isExpandable = false;\n    this.isVisible = false;\n    this.isInGroup = !!group;\n\n    let curr = el.nextElementSibling;\n    while (curr) {\n      if (curr.tagName.toLowerCase() == 'ul') {\n        const groupId = `${group?.label ?? ''} nav group ${this.label}`.replace(/[\\W_]+/g, '_');\n        el.setAttribute('aria-owns', groupId);\n        el.setAttribute('aria-expanded', 'false');\n        curr.setAttribute('role', 'group');\n        curr.setAttribute('id', groupId);\n        this.isExpandable = true;\n        break;\n      }\n\n      curr = curr.nextElementSibling;\n    }\n    this.init();\n  }\n\n  private init() {\n    this.el.tabIndex = -1;\n    if (!this.el.getAttribute('role')) {\n      this.el.setAttribute('role', 'treeitem');\n    }\n    this.el.addEventListener('keydown', this.handleKeydown.bind(this));\n    this.el.addEventListener('click', this.handleClick.bind(this));\n    this.el.addEventListener('focus', this.handleFocus.bind(this));\n    this.el.addEventListener('blur', this.handleBlur.bind(this));\n  }\n\n  isExpanded() {\n    if (this.isExpandable) {\n      return this.el.getAttribute('aria-expanded') === 'true';\n    }\n\n    return false;\n  }\n\n  isSelected() {\n    return this.el.getAttribute('aria-selected') === 'true';\n  }\n\n  private handleClick(event: MouseEvent) {\n    // only process click events that directly happened on this treeitem\n    if (event.target !== this.el && event.target !== this.el.firstElementChild) {\n      return;\n    }\n    if (this.isExpandable) {\n      if (this.isExpanded() && this.isSelected()) {\n        this.tree.collapseTreeitem(this);\n      } else {\n        this.tree.expandTreeitem(this);\n      }\n      event.stopPropagation();\n    }\n    this.tree.setSelected(this);\n  }\n\n  private handleFocus() {\n    let el = this.el;\n    if (this.isExpandable) {\n      el = (el.firstElementChild as HTMLElement) ?? el;\n    }\n    el.classList.add('focus');\n  }\n\n  private handleBlur() {\n    let el = this.el;\n    if (this.isExpandable) {\n      el = (el.firstElementChild as HTMLElement) ?? el;\n    }\n    el.classList.remove('focus');\n  }\n\n  private handleKeydown(event: KeyboardEvent) {\n    if (event.altKey || event.ctrlKey || event.metaKey) {\n      return;\n    }\n\n    let captured = false;\n    switch (event.key) {\n      case ' ':\n      case 'Enter':\n        if (this.isExpandable) {\n          if (this.isExpanded() && this.isSelected()) {\n            this.tree.collapseTreeitem(this);\n          } else {\n            this.tree.expandTreeitem(this);\n          }\n          captured = true;\n        } else {\n          event.stopPropagation();\n        }\n        this.tree.setSelected(this);\n        break;\n\n      case 'ArrowUp':\n        this.tree.setFocusToPreviousItem(this);\n        captured = true;\n        break;\n\n      case 'ArrowDown':\n        this.tree.setFocusToNextItem(this);\n        captured = true;\n        break;\n\n      case 'ArrowRight':\n        if (this.isExpandable) {\n          if (this.isExpanded()) {\n            this.tree.setFocusToNextItem(this);\n          } else {\n            this.tree.expandTreeitem(this);\n          }\n        }\n        captured = true;\n        break;\n\n      case 'ArrowLeft':\n        if (this.isExpandable && this.isExpanded()) {\n          this.tree.collapseTreeitem(this);\n          captured = true;\n        } else {\n          if (this.isInGroup) {\n            this.tree.setFocusToParentItem(this);\n            captured = true;\n          }\n        }\n        break;\n\n      case 'Home':\n        this.tree.setFocusToFirstItem();\n        captured = true;\n        break;\n\n      case 'End':\n        this.tree.setFocusToLastItem();\n        captured = true;\n        break;\n\n      default:\n        if (event.key.length === 1 && event.key.match(/\\S/)) {\n          if (event.key == '*') {\n            this.tree.expandAllSiblingItems(this);\n          } else {\n            this.tree.setFocusByFirstCharacter(this, event.key);\n          }\n          captured = true;\n        }\n        break;\n    }\n\n    if (captured) {\n      event.stopPropagation();\n      event.preventDefault();\n    }\n  }\n}\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nfunction debounce<T extends (...args: any[]) => any>(func: T, wait: number) {\n  let timeout: ReturnType<typeof setTimeout> | null;\n  return (...args: Parameters<T>) => {\n    const later = () => {\n      timeout = null;\n      func(...args);\n    };\n    if (timeout) {\n      clearTimeout(timeout);\n    }\n    timeout = setTimeout(later, wait);\n  };\n}\n", "/*!\n * @license\n * Copyright 2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/**\n * Controller for a table element with expandable rows. Adds event listeners to\n * a toggle within a table row that controls visiblity of additional related\n * rows in the table.\n *\n * @example\n * ```typescript\n * import {ExpandableRowsTableController} from '/static/js/table';\n *\n * const el = document .querySelector<HTMLTableElement>('.js-myTableElement')\n * new ExpandableRowsTableController(el));\n * ```\n */\nexport class ExpandableRowsTableController {\n  private rows: HTMLTableRowElement[];\n  private toggles: HTMLButtonElement[];\n\n  /**\n   * Create a table controller.\n   * @param table - The table element to which the controller binds.\n   */\n  constructor(private table: HTMLTableElement, private toggleAll?: HTMLButtonElement | null) {\n    this.rows = Array.from(table.querySelectorAll<HTMLTableRowElement>('[data-aria-controls]'));\n    this.toggles = Array.from(this.table.querySelectorAll('[aria-expanded]'));\n    this.setAttributes();\n    this.attachEventListeners();\n    this.update();\n  }\n\n  /**\n   * setAttributes sets data-aria-* and data-id attributes to regular\n   * html attributes as a workaround for limitations from safehtml.\n   */\n  private setAttributes() {\n    for (const a of ['data-aria-controls', 'data-aria-labelledby', 'data-id']) {\n      this.table.querySelectorAll(`[${a}]`).forEach(t => {\n        t.setAttribute(a.replace('data-', ''), t.getAttribute(a) ?? '');\n        t.removeAttribute(a);\n      });\n    }\n  }\n\n  private attachEventListeners() {\n    this.rows.forEach(t => {\n      t.addEventListener('click', e => {\n        this.handleToggleClick(e);\n      });\n    });\n    this.toggleAll?.addEventListener('click', () => {\n      this.expandAllItems();\n    });\n\n    document.addEventListener('keydown', e => {\n      if ((e.ctrlKey || e.metaKey) && e.key === 'f') {\n        this.expandAllItems();\n      }\n    });\n  }\n\n  private handleToggleClick(e: MouseEvent) {\n    let target = e.currentTarget as HTMLTableRowElement | null;\n    if (!target?.hasAttribute('aria-expanded')) {\n      target = this.table.querySelector(\n        `button[aria-controls=\"${target?.getAttribute('aria-controls')}\"]`\n      );\n    }\n    const isExpanded = target?.getAttribute('aria-expanded') === 'true';\n    target?.setAttribute('aria-expanded', isExpanded ? 'false' : 'true');\n    e.stopPropagation();\n    this.update();\n  }\n\n  expandAllItems = (): void => {\n    this.toggles.map(t => t.setAttribute('aria-expanded', 'true'));\n    this.update();\n  };\n\n  private collapseAllItems = () => {\n    this.toggles.map(t => t.setAttribute('aria-expanded', 'false'));\n    this.update();\n  };\n\n  private update = () => {\n    this.updateVisibleItems();\n    setTimeout(() => this.updateGlobalToggle());\n  };\n\n  private updateVisibleItems() {\n    this.rows.map(t => {\n      const isExpanded = t?.getAttribute('aria-expanded') === 'true';\n      const rowIds = t?.getAttribute('aria-controls')?.trimEnd().split(' ');\n      rowIds?.map(id => {\n        const target = document.getElementById(`${id}`);\n        if (isExpanded) {\n          target?.classList.add('visible');\n          target?.classList.remove('hidden');\n        } else {\n          target?.classList.add('hidden');\n          target?.classList.remove('visible');\n        }\n      });\n    });\n  }\n\n  private updateGlobalToggle() {\n    if (!this.toggleAll) return;\n    if (this.rows.some(t => t.hasAttribute('aria-expanded'))) {\n      this.toggleAll.style.display = 'block';\n    }\n    const someCollapsed = this.toggles.some(el => el.getAttribute('aria-expanded') === 'false');\n    if (someCollapsed) {\n      this.toggleAll.innerText = 'Expand all';\n      this.toggleAll.onclick = this.expandAllItems;\n    } else {\n      this.toggleAll.innerText = 'Collapse all';\n      this.toggleAll.onclick = this.collapseAllItems;\n    }\n  }\n}\n", "import { initPlaygrounds } from 'static/shared/playground/playground';\nimport { initModals } from 'static/shared/jump/jump';\nimport { SelectNavController, makeSelectNav } from 'static/shared/outline/select';\nimport { TreeNavController } from 'static/shared/outline/tree';\nimport { ExpandableRowsTableController } from 'static/shared/table/table';\n\ninitModals();\ninitPlaygrounds();\n\nconst directories = document.querySelector<HTMLTableElement>('.js-expandableTable');\nif (directories) {\n  const table = new ExpandableRowsTableController(\n    directories,\n    document.querySelector<HTMLButtonElement>('.js-expandAllDirectories')\n  );\n  // Expand directories on page load with expand-directories query param.\n  if (window.location.search.includes('expand-directories')) {\n    table.expandAllItems();\n  }\n}\n\nconst treeEl = document.querySelector<HTMLElement>('.js-tree');\nif (treeEl) {\n  const treeCtrl = new TreeNavController(treeEl);\n  const select = makeSelectNav(treeCtrl);\n  const mobileNav = document.querySelector('.js-mainNavMobile');\n  if (mobileNav && mobileNav.firstElementChild) {\n    mobileNav?.replaceChild(select, mobileNav.firstElementChild);\n  }\n  if (select.firstElementChild) {\n    new SelectNavController(select.firstElementChild);\n  }\n}\n\n/**\n * Event handlers for expanding and collapsing the readme section.\n */\nconst readme = document.querySelector('.js-readme');\nconst readmeContent = document.querySelector('.js-readmeContent');\nconst readmeOutline = document.querySelector('.js-readmeOutline');\nconst readmeExpand = document.querySelectorAll('.js-readmeExpand');\nconst readmeCollapse = document.querySelector('.js-readmeCollapse');\nconst mobileNavSelect = document.querySelector<HTMLSelectElement>('.DocNavMobile-select');\nif (readme && readmeContent && readmeOutline && readmeExpand.length && readmeCollapse) {\n  if (window.location.hash.includes('readme')) {\n    readme.classList.add('UnitReadme--expanded');\n  }\n  mobileNavSelect?.addEventListener('change', e => {\n    if ((e.target as HTMLSelectElement).value.startsWith('readme-')) {\n      readme.classList.add('UnitReadme--expanded');\n    }\n  });\n  readmeExpand.forEach(el =>\n    el.addEventListener('click', e => {\n      e.preventDefault();\n      readme.classList.add('UnitReadme--expanded');\n      readme.scrollIntoView();\n    })\n  );\n  readmeCollapse.addEventListener('click', e => {\n    e.preventDefault();\n    readme.classList.remove('UnitReadme--expanded');\n    if (readmeExpand[1]) {\n      readmeExpand[1].scrollIntoView({ block: 'center' });\n    }\n  });\n  readmeContent.addEventListener('keyup', () => {\n    readme.classList.add('UnitReadme--expanded');\n  });\n  readmeContent.addEventListener('click', () => {\n    readme.classList.add('UnitReadme--expanded');\n  });\n  readmeOutline.addEventListener('click', () => {\n    readme.classList.add('UnitReadme--expanded');\n  });\n  document.addEventListener('keydown', e => {\n    if ((e.ctrlKey || e.metaKey) && e.key === 'f') {\n      readme.classList.add('UnitReadme--expanded');\n    }\n  });\n}\n\n/**\n * Expand details items that are focused. This will expand\n * deprecated symbols when they are navigated to from the index\n * or a direct link.\n */\nfunction openDeprecatedSymbol() {\n  if (!location.hash) return;\n  const heading = document.getElementById(location.hash.slice(1));\n  const grandParent = heading?.parentElement?.parentElement as HTMLDetailsElement | null;\n  if (grandParent?.nodeName === 'DETAILS') {\n    grandParent.open = true;\n  }\n}\nopenDeprecatedSymbol();\nwindow.addEventListener('hashchange', () => openDeprecatedSymbol());\n\n/**\n * Listen for changes in the build context dropdown.\n */\ndocument.querySelectorAll('.js-buildContextSelect').forEach(el => {\n  el.addEventListener('change', e => {\n    window.location.search = `?GOOS=${(e.target as HTMLSelectElement).value}`;\n  });\n});\n"],
+  "mappings": "AAAA,AAgBA,GAAM,GAAuB,CAC3B,UAAW,kBACX,eAAgB,uBAChB,cAAe,6BACf,eAAgB,+BAChB,cAAe,8BACf,YAAa,mCACb,aAAc,oCACd,cAAe,qCACf,WAAY,mCAOP,OAAkC,CA4CvC,YAA6B,EAA+B,CAA/B,iBA5E/B,YA6FI,AAhBA,KAAK,UAAY,EACjB,KAAK,SAAW,EAAU,cAAc,KACxC,KAAK,QAAU,EAAU,cAAc,EAAqB,eAC5D,KAAK,aAAe,EAAU,cAAc,EAAqB,aACjE,KAAK,cAAgB,EAAU,cAAc,EAAqB,cAClE,KAAK,eAAiB,EAAU,cAAc,EAAqB,eACnE,KAAK,YAAc,EAAU,cAAc,EAAqB,YAChE,KAAK,QAAU,KAAK,aAAa,EAAU,cAAc,EAAqB,gBAC9E,KAAK,SAAW,EAAU,cAAc,EAAqB,gBAG7D,QAAK,eAAL,QAAmB,iBAAiB,QAAS,IAAM,KAAK,0BACxD,QAAK,gBAAL,QAAoB,iBAAiB,QAAS,IAAM,KAAK,0BACzD,QAAK,iBAAL,QAAqB,iBAAiB,QAAS,IAAM,KAAK,2BAC1D,QAAK,cAAL,QAAkB,iBAAiB,QAAS,IAAM,KAAK,wBAEnD,EAAC,KAAK,SAEV,MAAK,SACL,KAAK,QAAQ,iBAAiB,QAAS,IAAM,KAAK,UAClD,KAAK,QAAQ,iBAAiB,UAAW,GAAK,KAAK,UAAU,KAO/D,aAAa,EAAyC,CAxGxD,QAyGI,GAAM,GAAI,SAAS,cAAc,YACjC,SAAE,UAAU,IAAI,4BAA6B,QAC7C,EAAE,WAAa,GACf,EAAE,MAAQ,oBAAI,cAAJ,OAAmB,GAC7B,oBAAI,gBAAJ,QAAmB,aAAa,EAAG,GAC5B,EAMT,eAAoC,CApHtC,MAqHI,MAAO,QAAK,WAAL,cAAe,KAMxB,QAAe,CACb,KAAK,UAAU,KAAO,GAMhB,QAAe,CAlIzB,MAmII,GAAI,QAAK,UAAL,cAAc,MAAO,CACvB,GAAM,GAAiB,MAAK,QAAQ,MAAM,MAAM,QAAU,IAAI,OAE9D,KAAK,QAAQ,MAAM,OAAS,GAAI,IAAK,EAAgB,GAAK,GAAK,GAAK,SAYhE,UAAU,EAAkB,CAClC,AAAI,EAAE,MAAQ,OACZ,UAAS,YAAY,aAAc,GAAO,KAC1C,EAAE,kBAOE,aAAa,EAAgB,CACnC,AAAI,KAAK,SACP,MAAK,QAAQ,MAAQ,GAOjB,cAAc,EAAgB,CACpC,AAAI,KAAK,UACP,MAAK,SAAS,YAAc,GAQxB,aAAa,EAAa,CAChC,AAAI,KAAK,SACP,MAAK,QAAQ,YAAc,GAE7B,KAAK,cAAc,+BAOb,wBAAyB,CA1LnC,MA2LI,GAAM,GAAsB,6BAE5B,KAAK,cAAc,mCAEnB,MAAM,cAAe,CACnB,OAAQ,OACR,KAAM,QAAK,UAAL,cAAc,QAEnB,KAAK,GAAO,EAAI,QAChB,KAAK,GAAW,CACf,GAAM,GAAO,EAAsB,EACnC,KAAK,cAAc,YAAY,MAAS,SACxC,OAAO,KAAK,KAEb,MAAM,GAAO,CACZ,KAAK,aAAa,KAOhB,yBAA0B,CAjNpC,QAkNI,KAAK,cAAc,mCACnB,GAAM,GAAO,GAAI,UACjB,EAAK,OAAO,OAAQ,WAAK,UAAL,cAAc,QAAd,OAAuB,IAE3C,MAAM,YAAa,CACjB,OAAQ,OACR,KAAM,IAEL,KAAK,GAAO,EAAI,QAChB,KAAK,CAAC,CAAE,OAAM,WAAY,CACzB,KAAK,cAAc,GAAS,SACxB,GACF,MAAK,aAAa,GAClB,KAAK,YAGR,MAAM,GAAO,CACZ,KAAK,aAAa,KAOhB,sBAAuB,CA1OjC,MA2OI,KAAK,cAAc,mCAEnB,MAAM,gBAAiB,CACrB,OAAQ,OACR,KAAM,KAAK,UAAU,CAAE,KAAM,QAAK,UAAL,cAAc,MAAO,QAAS,MAE1D,KAAK,GAAO,EAAI,QAChB,KAAK,MAAO,CAAE,SAAQ,YAAa,CAClC,KAAK,cAAc,GAAU,IAC7B,OAAW,KAAK,IAAU,GACxB,KAAK,cAAc,EAAE,SACrB,KAAM,IAAI,SAAQ,GAAW,WAAW,EAAS,EAAE,MAAQ,QAG9D,MAAM,GAAO,CACZ,KAAK,aAAa,OAKnB,YAAiC,CACtC,GAAM,GAAmB,SAAS,KAAK,MAAM,mBAC7C,GAAI,EAAkB,CACpB,GAAM,GAAgB,SAAS,eAAe,EAAiB,IAC/D,AAAI,GACF,GAAc,KAAO,IAKzB,GAAM,GAAe,CACnB,GAAG,SAAS,iBAAoC,EAAqB,YAQjE,EAAkB,AAAC,GACvB,EAAa,KAAK,GACT,EAAG,OAAS,EAAc,iBAGrC,OAAW,KAAM,UAAS,iBAAiB,EAAqB,gBAAiB,CAE/E,GAAM,GAAgB,GAAI,GAA4B,GAChD,EAAc,EAAgB,GACpC,AAAI,EACF,EAAY,iBAAiB,QAAS,IAAM,CAC1C,EAAc,WAGhB,QAAQ,KAAK,2BCnPZ,WACL,EACA,EACA,EACA,EACM,CAlDR,MAmDE,UAAO,YAAP,cAAO,UAAc,IACrB,AAAI,MAAO,IAAU,SACnB,OAAO,UAAU,KAAK,CACpB,QACA,eAAgB,EAChB,aAAc,EACd,YAAa,IAGf,OAAO,UAAU,KAAK,GC5D1B,AAyCA,WAAyB,CAGvB,aAAc,CACZ,KAAK,SAAW,GAChB,SAAS,iBAAiB,UAAW,GAAK,KAAK,eAAe,IAUhE,GAAG,EAAa,EAAqB,EAAsC,EAAmB,CAxDhG,QAyDI,iBAAK,UAAL,iBAAuB,GAAI,MAC3B,KAAK,SAAS,GAAK,IAAI,CAAE,cAAa,cAAa,IAC5C,KAGD,eAAe,EAAkB,CA9D3C,MA+DI,OAAW,KAAW,QAAK,SAAS,EAAE,IAAI,iBAApB,OAAsC,GAAI,KAAO,CACrE,GAAI,EAAQ,QAAU,EAAQ,SAAW,EAAE,OACzC,OAEF,GAAM,GAAI,EAAE,OAUZ,GARE,CAAC,EAAQ,QACR,mBAAG,WAAY,SAAW,kBAAG,WAAY,UAAY,kBAAG,WAAY,aAInE,kBAAG,oBAIJ,EAAQ,UAAY,CAAE,GAAE,SAAW,EAAE,UACrC,CAAC,EAAQ,UAAa,GAAE,SAAW,EAAE,SAEtC,OAEF,EAAM,WAAY,UAAW,GAAG,EAAE,cAAe,EAAQ,aACzD,EAAQ,SAAS,MAKV,EAAW,GAAI,GCzF5B,AA0BA,GAAM,GAAa,SAAS,cAAiC,eACvD,EAAW,iBAAY,cAA8B,oBACrD,EAAW,iBAAY,cAA8B,oBACrD,EAAa,iBAAY,cAAgC,qBACzD,EAAM,SAAS,cAA8B,qBAS/C,EAUJ,YAAgC,CAC9B,GAAM,GAAQ,GACd,GAAI,EAAC,EACL,QAAW,KAAM,GAAI,iBAAiB,eACpC,EAAM,KAAK,EAAgB,IAI7B,OAAW,KAAQ,GACjB,EAAK,KAAK,iBAAiB,QAAS,UAAY,CAC9C,WAAY,UAIhB,SAAM,KAAK,SAAU,EAAG,EAAG,CACzB,MAAO,GAAE,MAAM,cAAc,EAAE,SAE1B,GAST,WAAyB,EAA2B,CA3EpD,MA4EE,GAAM,GAAI,SAAS,cAAc,KAC3B,EAAO,EAAG,aAAa,MAC7B,EAAE,aAAa,OAAQ,IAAM,GAC7B,EAAE,aAAa,WAAY,MAC3B,EAAE,aAAa,YAAa,gBAC5B,GAAM,GAAO,EAAG,aAAa,aAC7B,MAAO,CACL,KAAM,EACN,KAAM,UAAQ,GACd,KAAM,UAAQ,GACd,MAAO,oBAAM,gBAAN,OAAuB,IAIlC,GAAI,GACA,EAAiB,GAIrB,WAAwB,EAAgB,CAQtC,IAPA,EAAkB,EACb,GACH,GAAgB,KAElB,EAAkB,IAGX,iBAAU,YACf,EAAS,WAAW,SAGtB,GAAI,EAAQ,CAQV,GAAM,GAAkB,EAAO,cAEzB,EAAe,GACf,EAAgB,GAChB,EAAe,GAIf,EAAe,CAAC,EAAoB,EAAmB,IAEzD,EAAK,KAAK,UAAU,EAAG,GACvB,MACA,EAAK,KAAK,UAAU,EAAW,GAC/B,OACA,EAAK,KAAK,UAAU,GAIxB,OAAW,KAAQ,WAAiB,GAAI,CACtC,GAAM,GAAgB,EAAK,KAAK,cAEhC,GAAI,IAAkB,EACpB,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAK,KAAK,QACtD,EAAa,KAAK,WACT,EAAc,WAAW,GAClC,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAO,QACnD,EAAc,KAAK,OACd,CACL,GAAM,GAAQ,EAAc,QAAQ,GACpC,AAAI,EAAQ,IACV,GAAK,KAAK,UAAY,EAAa,EAAM,EAAO,EAAQ,EAAO,QAC/D,EAAa,KAAK,KAKxB,OAAW,KAAQ,GAAa,OAAO,GAAe,OAAO,GAC3D,WAAU,YAAY,EAAK,UAExB,CACL,GAAI,CAAC,GAAiB,EAAc,SAAW,EAAG,CAChD,GAAM,GAAM,SAAS,cAAc,KACnC,EAAI,UAAY,qCAChB,WAAU,YAAY,GAGxB,OAAW,KAAQ,WAAiB,GAClC,EAAK,KAAK,UAAY,EAAK,KAAO,OAAS,EAAK,KAAO,OACvD,WAAU,YAAY,EAAK,MAI/B,AAAI,GACF,GAAS,UAAY,GAEnB,kBAAe,SAAU,GAAY,EAAS,SAAS,OAAS,GAClE,EAAkB,GAKtB,WAA2B,EAAW,CACpC,GAAM,GAAK,iBAAU,SACrB,GAAI,GAAC,GAAM,CAAC,GASZ,IANI,GAAkB,GACpB,EAAG,GAAgB,UAAU,OAAO,qBAElC,GAAK,EAAG,QACV,GAAI,EAAG,OAAS,GAEd,GAAK,EAAG,CACV,EAAG,GAAG,UAAU,IAAI,qBAOpB,GAAM,GAAY,EAAG,GAAG,UAAY,EAAG,GAAG,UACpC,EAAe,EAAY,EAAG,GAAG,aACvC,AAAI,EAAY,EAAS,UAEvB,EAAS,UAAY,EACZ,EAAe,EAAS,UAAY,EAAS,cAEtD,GAAS,UAAY,EAAe,EAAS,cAGjD,EAAiB,GAInB,WAA2B,EAAe,CACxC,GAAI,EAAiB,EACnB,OAEF,GAAI,GAAI,EAAiB,EACzB,AAAI,EAAI,GACN,GAAI,GAEN,EAAkB,GAGb,YAA4B,CAEjC,WAAY,iBAAiB,QAAS,UAAY,CAChD,AAAI,EAAW,MAAM,eAAiB,EAAgB,eACpD,EAAe,EAAW,SAK9B,WAAY,iBAAiB,UAAW,SAAU,EAAO,CACvD,GAAM,GAAU,GACV,EAAY,GACZ,EAAW,GACjB,OAAQ,EAAM,WACP,GACH,EAAkB,IAClB,EAAM,iBACN,UACG,GACH,EAAkB,GAClB,EAAM,iBACN,UACG,GACH,AAAI,GAAkB,GAChB,GACD,GAAS,SAAS,GAAgC,QACnD,EAAM,kBAGV,SAIN,GAAM,GAAkB,SAAS,cAAiC,oBAMlE,EACG,GAAG,IAAK,qBAAsB,GAAK,CAClC,AAAI,kBAAY,OAAQ,kBAAiB,OAGzC,GAAE,iBACE,GACF,GAAW,MAAQ,IAErB,WAAY,YACZ,WAAY,QACZ,EAAe,OAEhB,GAAG,IAAK,uBAAwB,IAAM,CACrC,AAAI,kBAAY,OAAQ,kBAAiB,OAGzC,WAAiB,cAGrB,GAAM,GAAmB,SAAS,cAAc,mBAChD,AAAI,GACF,EAAiB,iBAAiB,QAAS,IAAM,CAC/C,AAAI,GACF,GAAW,MAAQ,IAErB,EAAe,MC7RrB,AASO,WAA0B,CAC/B,YAAoB,EAAa,CAAb,UAClB,KAAK,GAAG,iBAAiB,SAAU,GAAK,CACtC,GAAM,GAAS,EAAE,OACb,EAAO,EAAO,MAClB,AAAK,EAAO,MAAM,WAAW,MAC3B,GAAO,IAAM,GAEf,OAAO,SAAS,KAAO,MAKtB,WAAuB,EAA2C,CACvE,GAAM,GAAQ,SAAS,cAAc,SACrC,EAAM,UAAU,IAAI,YACpB,EAAM,aAAa,aAAc,QACjC,GAAM,GAAS,SAAS,cAAc,UACtC,EAAO,UAAU,IAAI,YAAa,gBAClC,EAAM,YAAY,GAClB,GAAM,GAAU,SAAS,cAAc,YACvC,EAAQ,MAAQ,UAChB,EAAO,YAAY,GACnB,GAAM,GAAgD,GAClD,EACJ,OAAW,KAAK,GAAK,UAAW,CAC9B,GAAI,OAAO,EAAE,OAAS,EAAG,SACzB,AAAI,EAAE,cACJ,GAAQ,EAAS,EAAE,cAAc,OAC5B,GACH,GAAQ,EAAS,EAAE,cAAc,OAAS,SAAS,cAAc,YACjE,EAAM,MAAQ,EAAE,cAAc,MAC9B,EAAO,YAAY,KAGrB,EAAQ,EAEV,GAAM,GAAI,SAAS,cAAc,UACjC,EAAE,MAAQ,EAAE,MACZ,EAAE,YAAc,EAAE,MAClB,EAAE,MAAS,EAAE,GAAyB,KAAK,QAAQ,OAAO,SAAS,OAAQ,IAAI,QAAQ,IAAK,IAC5F,EAAM,YAAY,GAEpB,SAAK,YAAY,GAAK,CApDxB,MAqDI,GAAM,GAAQ,EAAE,GAAyB,KACnC,EAAQ,KAAO,cAAiC,YAAY,SAApD,cAA+D,MAC7E,AAAI,GACF,GAAO,MAAQ,IAEhB,IACI,EC3DT,AAcO,WAAwB,CAa7B,YAAoB,EAAiB,CAAjB,UAoBZ,kBAAe,IAAY,CACjC,KAAK,GAAG,MAAM,YAAY,mBAAoB,SAC9C,KAAK,GAAG,MAAM,YAAY,mBAAoB,KAAK,GAAG,aAAe,OArBrE,KAAK,UAAY,GACjB,KAAK,WAAa,GAClB,KAAK,cAAgB,KACrB,KAAK,aAAe,KACpB,KAAK,kBAAoB,GACzB,KAAK,OAGC,MAAa,CACnB,KAAK,eACL,OAAO,iBAAiB,SAAU,KAAK,cACvC,KAAK,gBACL,KAAK,yBACL,KAAK,iBACD,KAAK,eACP,MAAK,cAAc,GAAG,SAAW,GAS7B,gBAAiB,CACvB,KAAK,YAAY,GAAY,CAC3B,KAAK,eAAe,GACpB,KAAK,YAAY,KAKnB,GAAM,GAAU,GAAI,KACd,EAAW,GAAI,sBACnB,GAAW,CACT,OAAW,KAAS,GAClB,EAAQ,IAAI,EAAM,OAAO,GAAI,EAAM,gBAAkB,EAAM,oBAAsB,GAEnF,OAAW,CAAC,EAAI,IAAmB,GACjC,GAAI,EAAgB,CAClB,GAAM,GAAS,KAAK,UAAU,KAAK,GAAE,CApEjD,MAqEe,WAAE,KAAF,cAA4B,KAAK,SAAS,IAAI,OAEjD,GAAI,EACF,OAAW,KAAM,MAAK,kBACpB,EAAG,GAGP,QAIN,CACE,UAAW,EACX,WAAY,sBAIhB,OAAW,KAAQ,MAAK,UAAU,IAAI,GAAK,EAAE,GAAG,aAAa,SAC3D,GAAI,EAAM,CACR,GAAM,GAAK,EAAK,QAAQ,OAAO,SAAS,OAAQ,IAAI,QAAQ,IAAK,IAAI,QAAQ,IAAK,IAC5E,EAAS,SAAS,eAAe,GACvC,AAAI,GACF,EAAS,QAAQ,IAMzB,YAAY,EAA2B,EAAQ,IAAW,CACxD,KAAK,kBAAkB,KAAK,EAAS,EAAI,IAG3C,mBAAmB,EAA6B,CAC9C,GAAI,GAAW,KACf,OAAS,GAAI,EAAY,MAAQ,EAAG,EAAI,KAAK,UAAU,OAAQ,IAAK,CAClE,GAAM,GAAK,KAAK,UAAU,GAC1B,GAAI,EAAG,UAAW,CAChB,EAAW,EACX,OAGJ,AAAI,GACF,KAAK,eAAe,GAIxB,uBAAuB,EAA6B,CAClD,GAAI,GAAW,KACf,OAAS,GAAI,EAAY,MAAQ,EAAG,EAAI,GAAI,IAAK,CAC/C,GAAM,GAAK,KAAK,UAAU,GAC1B,GAAI,EAAG,UAAW,CAChB,EAAW,EACX,OAGJ,AAAI,GACF,KAAK,eAAe,GAIxB,qBAAqB,EAA6B,CAChD,AAAI,EAAY,eACd,KAAK,eAAe,EAAY,eAIpC,qBAA4B,CAC1B,KAAK,eAAiB,KAAK,eAAe,KAAK,eAGjD,oBAA2B,CACzB,KAAK,cAAgB,KAAK,eAAe,KAAK,cAGhD,YAAY,EAA6B,CA/I3C,MAgJI,OAAW,KAAM,MAAK,GAAG,iBAAiB,0BACxC,AAAI,IAAO,EAAY,IAClB,OAAG,qBAAH,cAAuB,SAAS,EAAY,MAC/C,EAAG,aAAa,gBAAiB,UAGrC,OAAW,KAAM,MAAK,GAAG,iBAAiB,mBACxC,AAAI,IAAO,EAAY,IACrB,EAAG,aAAa,gBAAiB,SAGrC,EAAY,GAAG,aAAa,gBAAiB,QAC7C,KAAK,yBACL,KAAK,eAAe,EAAa,IAGnC,eAAe,EAA0B,CACvC,GAAI,GAA+B,EACnC,KAAO,GACL,AAAI,EAAY,cACd,EAAY,GAAG,aAAa,gBAAiB,QAE/C,EAAc,EAAY,cAE5B,KAAK,yBAGP,sBAAsB,EAA6B,CACjD,OAAW,KAAM,MAAK,UACpB,AAAI,EAAG,gBAAkB,EAAY,eAAiB,EAAG,cACvD,KAAK,eAAe,GAK1B,iBAAiB,EAA6B,CAC5C,GAAI,GAAgB,KAEpB,AAAI,EAAY,aACd,EAAgB,EAEhB,EAAgB,EAAY,cAG1B,GACF,GAAc,GAAG,aAAa,gBAAiB,SAC/C,KAAK,yBACL,KAAK,eAAe,IAIxB,yBAAyB,EAAuB,EAAoB,CAClE,GAAI,GAAe,EACnB,EAAO,EAAK,cAGZ,EAAQ,EAAY,MAAQ,EACxB,IAAU,KAAK,UAAU,QAC3B,GAAQ,GAIV,EAAQ,KAAK,mBAAmB,EAAO,GAGnC,IAAU,IACZ,GAAQ,KAAK,mBAAmB,EAAG,IAIjC,EAAQ,IACV,KAAK,eAAe,KAAK,UAAU,IAI/B,eAAgB,CACtB,GAAM,GAAY,CAAC,EAAiB,IAA2B,CAC7D,GAAI,GAAK,EACL,EAAO,EAAG,kBACd,KAAO,GACL,AAAI,GAAK,UAAY,KAAO,EAAK,UAAY,SAC3C,GAAK,GAAI,GAAS,EAAM,KAAM,GAC9B,KAAK,UAAU,KAAK,GACpB,KAAK,WAAW,KAAK,EAAG,MAAM,UAAU,EAAG,GAAG,gBAE5C,EAAK,mBACP,EAAU,EAAM,GAElB,EAAO,EAAK,oBAGhB,EAAU,KAAK,GAAmB,MAClC,KAAK,UAAU,IAAI,CAAC,EAAI,IAAS,EAAG,MAAQ,GAGtC,wBAA+B,CACrC,KAAK,cAAgB,KAAK,UAAU,GAEpC,OAAW,KAAM,MAAK,UAAW,CAC/B,GAAI,GAAS,EAAG,cAEhB,IADA,EAAG,UAAY,GACR,GAAU,EAAO,KAAO,KAAK,IAClC,AAAK,EAAO,cACV,GAAG,UAAY,IAEjB,EAAS,EAAO,cAElB,AAAI,EAAG,WACL,MAAK,aAAe,IAKlB,eAAe,EAAoB,EAAU,GAAM,CACzD,EAAS,GAAG,SAAW,EACnB,GACF,EAAS,GAAG,QAEd,OAAW,KAAM,MAAK,UACpB,AAAI,IAAO,GACT,GAAG,GAAG,SAAW,IAKf,mBAAmB,EAAoB,EAAsB,CACnE,OAAS,GAAI,EAAY,EAAI,KAAK,WAAW,OAAQ,IACnD,GAAI,KAAK,UAAU,GAAG,WAAa,IAAS,KAAK,WAAW,GAC1D,MAAO,GAGX,MAAO,KAIX,OAAe,CAYb,YAAY,EAAiB,EAA4B,EAAwB,CAnSnF,cAoSI,EAAG,SAAW,GACd,KAAK,GAAK,EACV,KAAK,cAAgB,EACrB,KAAK,MAAQ,QAAG,cAAH,cAAgB,SAAhB,OAA0B,GACvC,KAAK,KAAO,EACZ,KAAK,MAAS,mBAAO,QAAS,GAAK,EACnC,KAAK,MAAQ,EAEb,GAAM,GAAS,EAAG,cAClB,AAAI,kBAAQ,QAAQ,iBAAkB,MACpC,YAAQ,aAAa,OAAQ,SAE/B,EAAG,aAAa,aAAc,KAAK,MAAQ,IACvC,EAAG,aAAa,eAClB,MAAK,MAAQ,uBAAI,aAAa,gBAAjB,cAAgC,SAAhC,OAA0C,IAGzD,KAAK,aAAe,GACpB,KAAK,UAAY,GACjB,KAAK,UAAY,CAAC,CAAC,EAEnB,GAAI,GAAO,EAAG,mBACd,KAAO,GAAM,CACX,GAAI,EAAK,QAAQ,eAAiB,KAAM,CACtC,GAAM,GAAU,GAAG,oBAAO,QAAP,OAAgB,gBAAgB,KAAK,QAAQ,QAAQ,UAAW,KACnF,EAAG,aAAa,YAAa,GAC7B,EAAG,aAAa,gBAAiB,SACjC,EAAK,aAAa,OAAQ,SAC1B,EAAK,aAAa,KAAM,GACxB,KAAK,aAAe,GACpB,MAGF,EAAO,EAAK,mBAEd,KAAK,OAGC,MAAO,CACb,KAAK,GAAG,SAAW,GACd,KAAK,GAAG,aAAa,SACxB,KAAK,GAAG,aAAa,OAAQ,YAE/B,KAAK,GAAG,iBAAiB,UAAW,KAAK,cAAc,KAAK,OAC5D,KAAK,GAAG,iBAAiB,QAAS,KAAK,YAAY,KAAK,OACxD,KAAK,GAAG,iBAAiB,QAAS,KAAK,YAAY,KAAK,OACxD,KAAK,GAAG,iBAAiB,OAAQ,KAAK,WAAW,KAAK,OAGxD,YAAa,CACX,MAAI,MAAK,aACA,KAAK,GAAG,aAAa,mBAAqB,OAG5C,GAGT,YAAa,CACX,MAAO,MAAK,GAAG,aAAa,mBAAqB,OAG3C,YAAY,EAAmB,CAErC,AAAI,EAAM,SAAW,KAAK,IAAM,EAAM,SAAW,KAAK,GAAG,mBAGrD,MAAK,cACP,CAAI,KAAK,cAAgB,KAAK,aAC5B,KAAK,KAAK,iBAAiB,MAE3B,KAAK,KAAK,eAAe,MAE3B,EAAM,mBAER,KAAK,KAAK,YAAY,OAGhB,aAAc,CAjXxB,MAkXI,GAAI,GAAK,KAAK,GACd,AAAI,KAAK,cACP,GAAM,KAAG,oBAAH,OAAwC,GAEhD,EAAG,UAAU,IAAI,SAGX,YAAa,CAzXvB,MA0XI,GAAI,GAAK,KAAK,GACd,AAAI,KAAK,cACP,GAAM,KAAG,oBAAH,OAAwC,GAEhD,EAAG,UAAU,OAAO,SAGd,cAAc,EAAsB,CAC1C,GAAI,EAAM,QAAU,EAAM,SAAW,EAAM,QACzC,OAGF,GAAI,GAAW,GACf,OAAQ,EAAM,SACP,QACA,QACH,AAAI,KAAK,aACP,CAAI,KAAK,cAAgB,KAAK,aAC5B,KAAK,KAAK,iBAAiB,MAE3B,KAAK,KAAK,eAAe,MAE3B,EAAW,IAEX,EAAM,kBAER,KAAK,KAAK,YAAY,MACtB,UAEG,UACH,KAAK,KAAK,uBAAuB,MACjC,EAAW,GACX,UAEG,YACH,KAAK,KAAK,mBAAmB,MAC7B,EAAW,GACX,UAEG,aACH,AAAI,KAAK,cACP,CAAI,KAAK,aACP,KAAK,KAAK,mBAAmB,MAE7B,KAAK,KAAK,eAAe,OAG7B,EAAW,GACX,UAEG,YACH,AAAI,KAAK,cAAgB,KAAK,aAC5B,MAAK,KAAK,iBAAiB,MAC3B,EAAW,IAEP,KAAK,WACP,MAAK,KAAK,qBAAqB,MAC/B,EAAW,IAGf,UAEG,OACH,KAAK,KAAK,sBACV,EAAW,GACX,UAEG,MACH,KAAK,KAAK,qBACV,EAAW,GACX,cAGA,AAAI,EAAM,IAAI,SAAW,GAAK,EAAM,IAAI,MAAM,OAC5C,CAAI,EAAM,KAAO,IACf,KAAK,KAAK,sBAAsB,MAEhC,KAAK,KAAK,yBAAyB,KAAM,EAAM,KAEjD,EAAW,IAEb,MAGJ,AAAI,GACF,GAAM,kBACN,EAAM,oBAMZ,WAAqD,EAAS,EAAc,CAC1E,GAAI,GACJ,MAAO,IAAI,IAAwB,CACjC,GAAM,GAAQ,IAAM,CAClB,EAAU,KACV,EAAK,GAAG,IAEV,AAAI,GACF,aAAa,GAEf,EAAU,WAAW,EAAO,IChehC,AAoBO,WAAoC,CAQzC,YAAoB,EAAiC,EAAsC,CAAvE,aAAiC,iBAmDrD,oBAAiB,IAAY,CAC3B,KAAK,QAAQ,IAAI,GAAK,EAAE,aAAa,gBAAiB,SACtD,KAAK,UAGC,sBAAmB,IAAM,CAC/B,KAAK,QAAQ,IAAI,GAAK,EAAE,aAAa,gBAAiB,UACtD,KAAK,UAGC,YAAS,IAAM,CACrB,KAAK,qBACL,WAAW,IAAM,KAAK,uBA9DtB,KAAK,KAAO,MAAM,KAAK,EAAM,iBAAsC,yBACnE,KAAK,QAAU,MAAM,KAAK,KAAK,MAAM,iBAAiB,oBACtD,KAAK,gBACL,KAAK,uBACL,KAAK,SAOC,eAAgB,CACtB,OAAW,KAAK,CAAC,qBAAsB,uBAAwB,WAC7D,KAAK,MAAM,iBAAiB,IAAI,MAAM,QAAQ,GAAK,CA1CzD,MA2CQ,EAAE,aAAa,EAAE,QAAQ,QAAS,IAAK,KAAE,aAAa,KAAf,OAAqB,IAC5D,EAAE,gBAAgB,KAKhB,sBAAuB,CAjDjC,MAkDI,KAAK,KAAK,QAAQ,GAAK,CACrB,EAAE,iBAAiB,QAAS,GAAK,CAC/B,KAAK,kBAAkB,OAG3B,QAAK,YAAL,QAAgB,iBAAiB,QAAS,IAAM,CAC9C,KAAK,mBAGP,SAAS,iBAAiB,UAAW,GAAK,CACxC,AAAK,GAAE,SAAW,EAAE,UAAY,EAAE,MAAQ,KACxC,KAAK,mBAKH,kBAAkB,EAAe,CACvC,GAAI,GAAS,EAAE,cACf,AAAK,kBAAQ,aAAa,mBACxB,GAAS,KAAK,MAAM,cAClB,yBAAyB,iBAAQ,aAAa,uBAGlD,GAAM,GAAa,kBAAQ,aAAa,oBAAqB,OAC7D,WAAQ,aAAa,gBAAiB,EAAa,QAAU,QAC7D,EAAE,kBACF,KAAK,SAkBC,oBAAqB,CAC3B,KAAK,KAAK,IAAI,GAAK,CA/FvB,MAgGM,GAAM,GAAa,kBAAG,aAAa,oBAAqB,OAClD,EAAS,oBAAG,aAAa,mBAAhB,cAAkC,UAAU,MAAM,KACjE,WAAQ,IAAI,GAAM,CAChB,GAAM,GAAS,SAAS,eAAe,GAAG,KAC1C,AAAI,EACF,YAAQ,UAAU,IAAI,WACtB,WAAQ,UAAU,OAAO,WAEzB,YAAQ,UAAU,IAAI,UACtB,WAAQ,UAAU,OAAO,gBAMzB,oBAAqB,CAC3B,GAAI,CAAC,KAAK,UAAW,OACrB,AAAI,KAAK,KAAK,KAAK,GAAK,EAAE,aAAa,mBACrC,MAAK,UAAU,MAAM,QAAU,SAGjC,AADsB,KAAK,QAAQ,KAAK,GAAM,EAAG,aAAa,mBAAqB,SAEjF,MAAK,UAAU,UAAY,aAC3B,KAAK,UAAU,QAAU,KAAK,gBAE9B,MAAK,UAAU,UAAY,eAC3B,KAAK,UAAU,QAAU,KAAK,oBCpHpC,IACA,IAEA,GAAM,GAAc,SAAS,cAAgC,uBAC7D,GAAI,EAAa,CACf,GAAM,GAAQ,GAAI,GAChB,EACA,SAAS,cAAiC,6BAG5C,AAAI,OAAO,SAAS,OAAO,SAAS,uBAClC,EAAM,iBAIV,GAAM,GAAS,SAAS,cAA2B,YACnD,GAAI,EAAQ,CACV,GAAM,GAAW,GAAI,GAAkB,GACjC,EAAS,EAAc,GACvB,EAAY,SAAS,cAAc,qBACzC,AAAI,GAAa,EAAU,mBACzB,YAAW,aAAa,EAAQ,EAAU,oBAExC,EAAO,mBACT,GAAI,GAAoB,EAAO,mBAOnC,GAAM,GAAS,SAAS,cAAc,cAChC,EAAgB,SAAS,cAAc,qBACvC,EAAgB,SAAS,cAAc,qBACvC,EAAe,SAAS,iBAAiB,oBACzC,EAAiB,SAAS,cAAc,sBACxC,EAAkB,SAAS,cAAiC,wBAClE,AAAI,GAAU,GAAiB,GAAiB,EAAa,QAAU,GACjE,QAAO,SAAS,KAAK,SAAS,WAChC,EAAO,UAAU,IAAI,wBAEvB,WAAiB,iBAAiB,SAAU,GAAK,CAC/C,AAAK,EAAE,OAA6B,MAAM,WAAW,YACnD,EAAO,UAAU,IAAI,0BAGzB,EAAa,QAAQ,GACnB,EAAG,iBAAiB,QAAS,GAAK,CAChC,EAAE,iBACF,EAAO,UAAU,IAAI,wBACrB,EAAO,oBAGX,EAAe,iBAAiB,QAAS,GAAK,CAC5C,EAAE,iBACF,EAAO,UAAU,OAAO,wBACpB,EAAa,IACf,EAAa,GAAG,eAAe,CAAE,MAAO,aAG5C,EAAc,iBAAiB,QAAS,IAAM,CAC5C,EAAO,UAAU,IAAI,0BAEvB,EAAc,iBAAiB,QAAS,IAAM,CAC5C,EAAO,UAAU,IAAI,0BAEvB,EAAc,iBAAiB,QAAS,IAAM,CAC5C,EAAO,UAAU,IAAI,0BAEvB,SAAS,iBAAiB,UAAW,GAAK,CACxC,AAAK,GAAE,SAAW,EAAE,UAAY,EAAE,MAAQ,KACxC,EAAO,UAAU,IAAI,2BAU3B,YAAgC,CAvFhC,MAwFE,GAAI,CAAC,SAAS,KAAM,OACpB,GAAM,GAAU,SAAS,eAAe,SAAS,KAAK,MAAM,IACtD,EAAc,oBAAS,gBAAT,cAAwB,cAC5C,AAAI,kBAAa,YAAa,WAC5B,GAAY,KAAO,IAGvB,IACA,OAAO,iBAAiB,aAAc,IAAM,KAK5C,SAAS,iBAAiB,0BAA0B,QAAQ,GAAM,CAChE,EAAG,iBAAiB,SAAU,GAAK,CACjC,OAAO,SAAS,OAAS,SAAU,EAAE,OAA6B",
   "names": []
 }
diff --git a/static/shared/jump/jump.js b/static/shared/jump/jump.js
index 04d9ed7..9868438 100644
--- a/static/shared/jump/jump.js
+++ b/static/shared/jump/jump.js
@@ -3,5 +3,5 @@
  * Copyright 2019-2020 The Go Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style
  * license that can be found in the LICENSE file.
- */const c=document.querySelector(".JumpDialog"),f=c==null?void 0:c.querySelector(".JumpDialog-body"),o=c==null?void 0:c.querySelector(".JumpDialog-list"),s=c==null?void 0:c.querySelector(".JumpDialog-input"),k=document.querySelector(".js-documentation");let l;function E(){const t=[];if(!!k){for(const e of k.querySelectorAll("[data-kind]"))t.push(M(e));for(const e of t)e.link.addEventListener("click",function(){c==null||c.close()});return t.sort(function(e,n){return e.lower.localeCompare(n.lower)}),t}}function M(t){var a;const e=document.createElement("a"),n=t.getAttribute("id");e.setAttribute("href","#"+n),e.setAttribute("tabindex","-1"),e.setAttribute("data-gtmc","jump to link");const i=t.getAttribute("data-kind");return{link:e,name:n!=null?n:"",kind:i!=null?i:"",lower:(a=n==null?void 0:n.toLowerCase())!=null?a:""}}let v,u=-1;function p(t){for(v=t,l||(l=E()),T(-1);o==null?void 0:o.firstChild;)o.firstChild.remove();if(t){const e=t.toLowerCase(),n=[],i=[],a=[],d=(r,h,m)=>r.name.substring(0,h)+"<b>"+r.name.substring(h,m)+"</b>"+r.name.substring(m);for(const r of l!=null?l:[]){const h=r.name.toLowerCase();if(h===e)r.link.innerHTML=d(r,0,r.name.length),n.push(r);else if(h.startsWith(e))r.link.innerHTML=d(r,0,t.length),i.push(r);else{const m=h.indexOf(e);m>-1&&(r.link.innerHTML=d(r,m,m+t.length),a.push(r))}}for(const r of n.concat(i).concat(a))o==null||o.appendChild(r.link)}else{if(!l||l.length===0){const e=document.createElement("i");e.innerHTML="There are no symbols on this page.",o==null||o.appendChild(e)}for(const e of l!=null?l:[])e.link.innerHTML=e.name+" <i>"+e.kind+"</i>",o==null||o.appendChild(e.link)}f&&(f.scrollTop=0),(l==null?void 0:l.length)&&o&&o.children.length>0&&T(0)}function T(t){const e=o==null?void 0:o.children;if(!(!e||!f)){if(u>=0&&e[u].classList.remove("JumpDialog-active"),t>=e.length&&(t=e.length-1),t>=0){e[t].classList.add("JumpDialog-active");const n=e[t].offsetTop-e[0].offsetTop,i=n+e[t].clientHeight;n<f.scrollTop?f.scrollTop=n:i>f.scrollTop+f.clientHeight&&(f.scrollTop=i-f.clientHeight)}u=t}}function L(t){if(u<0)return;let e=u+t;e<0&&(e=0),T(e)}function b(){s==null||s.addEventListener("keyup",function(){s.value.toUpperCase()!=v.toUpperCase()&&p(s.value)}),s==null||s.addEventListener("keydown",function(n){const i=38,a=40,d=13;switch(n.which){case i:L(-1),n.preventDefault();break;case a:L(1),n.preventDefault();break;case d:u>=0&&o&&(o.children[u].click(),n.preventDefault());break}});const t=document.querySelector(".ShortcutsDialog");document.addEventListener("keypress",function(n){if((c==null?void 0:c.open)||(t==null?void 0:t.open))return;const i=n.target,a=i==null?void 0:i.tagName;if(a=="INPUT"||a=="SELECT"||a=="TEXTAREA"||(i==null?void 0:i.contentEditable)=="true"||n.metaKey||n.ctrlKey)return;switch(String.fromCharCode(n.which)){case"f":case"F":n.preventDefault(),s&&(s.value=""),c==null||c.showModal(),s==null||s.focus(),p("");break;case"?":t==null||t.showModal();break}});const e=document.querySelector(".js-jumpToInput");e&&e.addEventListener("click",()=>{s&&(s.value=""),p("")})}export{b as initModals};
+ */import{keyboard as M}from"../keyboard/keyboard";const o=document.querySelector(".JumpDialog"),a=o==null?void 0:o.querySelector(".JumpDialog-body"),i=o==null?void 0:o.querySelector(".JumpDialog-list"),c=o==null?void 0:o.querySelector(".JumpDialog-input"),T=document.querySelector(".js-documentation");let l;function L(){const t=[];if(!!T){for(const e of T.querySelectorAll("[data-kind]"))t.push(w(e));for(const e of t)e.link.addEventListener("click",function(){o==null||o.close()});return t.sort(function(e,n){return e.lower.localeCompare(n.lower)}),t}}function w(t){var f;const e=document.createElement("a"),n=t.getAttribute("id");e.setAttribute("href","#"+n),e.setAttribute("tabindex","-1"),e.setAttribute("data-gtmc","jump to link");const s=t.getAttribute("data-kind");return{link:e,name:n!=null?n:"",kind:s!=null?s:"",lower:(f=n==null?void 0:n.toLowerCase())!=null?f:""}}let v,u=-1;function p(t){for(v=t,l||(l=L()),k(-1);i==null?void 0:i.firstChild;)i.firstChild.remove();if(t){const e=t.toLowerCase(),n=[],s=[],f=[],h=(r,d,m)=>r.name.substring(0,d)+"<b>"+r.name.substring(d,m)+"</b>"+r.name.substring(m);for(const r of l!=null?l:[]){const d=r.name.toLowerCase();if(d===e)r.link.innerHTML=h(r,0,r.name.length),n.push(r);else if(d.startsWith(e))r.link.innerHTML=h(r,0,t.length),s.push(r);else{const m=d.indexOf(e);m>-1&&(r.link.innerHTML=h(r,m,m+t.length),f.push(r))}}for(const r of n.concat(s).concat(f))i==null||i.appendChild(r.link)}else{if(!l||l.length===0){const e=document.createElement("i");e.innerHTML="There are no symbols on this page.",i==null||i.appendChild(e)}for(const e of l!=null?l:[])e.link.innerHTML=e.name+" <i>"+e.kind+"</i>",i==null||i.appendChild(e.link)}a&&(a.scrollTop=0),(l==null?void 0:l.length)&&i&&i.children.length>0&&k(0)}function k(t){const e=i==null?void 0:i.children;if(!(!e||!a)){if(u>=0&&e[u].classList.remove("JumpDialog-active"),t>=e.length&&(t=e.length-1),t>=0){e[t].classList.add("JumpDialog-active");const n=e[t].offsetTop-e[0].offsetTop,s=n+e[t].clientHeight;n<a.scrollTop?a.scrollTop=n:s>a.scrollTop+a.clientHeight&&(a.scrollTop=s-a.clientHeight)}u=t}}function b(t){if(u<0)return;let e=u+t;e<0&&(e=0),k(e)}function y(){c==null||c.addEventListener("keyup",function(){c.value.toUpperCase()!=v.toUpperCase()&&p(c.value)}),c==null||c.addEventListener("keydown",function(n){const s=38,f=40,h=13;switch(n.which){case s:b(-1),n.preventDefault();break;case f:b(1),n.preventDefault();break;case h:u>=0&&i&&(i.children[u].click(),n.preventDefault());break}});const t=document.querySelector(".ShortcutsDialog");M.on("f","open jump to modal",n=>{(o==null?void 0:o.open)||(t==null?void 0:t.open)||(n.preventDefault(),c&&(c.value=""),o==null||o.showModal(),c==null||c.focus(),p(""))}).on("?","open shortcuts modal",()=>{(o==null?void 0:o.open)||(t==null?void 0:t.open)||t==null||t.showModal()});const e=document.querySelector(".js-jumpToInput");e&&e.addEventListener("click",()=>{c&&(c.value=""),p("")})}export{y as initModals};
 //# sourceMappingURL=jump.js.map
diff --git a/static/shared/jump/jump.js.map b/static/shared/jump/jump.js.map
index d39336b..d2bae52 100644
--- a/static/shared/jump/jump.js.map
+++ b/static/shared/jump/jump.js.map
@@ -1,7 +1,7 @@
 {
   "version": 3,
   "sources": ["jump.ts"],
-  "sourcesContent": ["/*!\n * @license\n * Copyright 2019-2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// This file implements the behavior of the \"jump to symbol\" dialog for Go\n// package documentation, as well as the simple dialog that displays keyboard\n// shortcuts.\n\n// The DOM for the dialogs is at the bottom of static/frontend/unit/main/_modals.tmpl.\n// The CSS is in static/frontend/unit/main/_modals.css.\n\n// The dialog is activated by pressing the 'f' key. It presents a list\n// (#JumpDialog-list) of all Go symbols displayed in the documentation.\n// Entering text in the dialog's text box (#JumpDialog-filter) restricts the\n// list to symbols containing the text. Clicking on an symbol jumps to\n// its documentation.\n\n// This code is based on\n// https://go.googlesource.com/gddo/+/refs/heads/master/gddo-server/assets/site.js.\n// It was modified to remove the dependence on jquery and bootstrap.\n\nconst jumpDialog = document.querySelector<HTMLDialogElement>('.JumpDialog');\nconst jumpBody = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-body');\nconst jumpList = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-list');\nconst jumpFilter = jumpDialog?.querySelector<HTMLInputElement>('.JumpDialog-input');\nconst doc = document.querySelector<HTMLDivElement>('.js-documentation');\n\ninterface JumpListItem {\n  link: HTMLAnchorElement;\n  name: string;\n  kind: string;\n  lower: string;\n}\n\nlet jumpListItems: JumpListItem[] | undefined; // All the symbols in the doc; computed only once.\n\n// collectJumpListItems returns a list of items, one for each symbol in the\n// documentation on the current page.\n//\n// It uses the data-kind attribute generated in the documentation HTML to find\n// the symbols and their id attributes.\n//\n// If there are no data-kind attributes, then we have older doc; fall back to\n// a less precise method.\nfunction collectJumpListItems() {\n  const items = [];\n  if (!doc) return;\n  for (const el of doc.querySelectorAll('[data-kind]')) {\n    items.push(newJumpListItem(el));\n  }\n\n  // Clicking on any of the links closes the dialog.\n  for (const item of items) {\n    item.link.addEventListener('click', function () {\n      jumpDialog?.close();\n    });\n  }\n  // Sort case-insensitively by symbol name.\n  items.sort(function (a, b) {\n    return a.lower.localeCompare(b.lower);\n  });\n  return items;\n}\n\n// newJumpListItem creates a new item for the DOM element el.\n// An item is an object with:\n// - name: the element's id (which is the symbol name)\n// - kind: the element's kind (function, variable, etc.),\n// - link: a link ('a' tag) to the element\n// - lower: the name in lower case, just for sorting\nfunction newJumpListItem(el: Element): JumpListItem {\n  const a = document.createElement('a');\n  const name = el.getAttribute('id');\n  a.setAttribute('href', '#' + name);\n  a.setAttribute('tabindex', '-1');\n  a.setAttribute('data-gtmc', 'jump to link');\n  const kind = el.getAttribute('data-kind');\n  return {\n    link: a,\n    name: name ?? '',\n    kind: kind ?? '',\n    lower: name?.toLowerCase() ?? '', // for sorting\n  };\n}\n\nlet lastFilterValue: string; // The last contents of the filter text box.\nlet activeJumpItem = -1; // The index of the currently active item in the list.\n\n// updateJumpList sets the elements of the dialog list to\n// everything whose name contains filter.\nfunction updateJumpList(filter: string) {\n  lastFilterValue = filter;\n  if (!jumpListItems) {\n    jumpListItems = collectJumpListItems();\n  }\n  setActiveJumpItem(-1);\n\n  // Remove all children from list.\n  while (jumpList?.firstChild) {\n    jumpList.firstChild.remove();\n  }\n\n  if (filter) {\n    // A filter is set. We treat the filter as a substring that can appear in\n    // an item name (case insensitive), and find the following matches - in\n    // order of priority:\n    //\n    // 1. Exact matches (the filter matches the item's name exactly)\n    // 2. Prefix matches (the item's name starts with filter)\n    // 3. Infix matches (the filter is a substring of the item's name)\n    const filterLowerCase = filter.toLowerCase();\n\n    const exactMatches = [];\n    const prefixMatches = [];\n    const infixMatches = [];\n\n    // makeLinkHtml creates the link name HTML for a list item. item is the DOM\n    // item. item.name.substr(boldStart, boldEnd) will be bolded.\n    const makeLinkHtml = (item: JumpListItem, boldStart: number, boldEnd: number) => {\n      return (\n        item.name.substring(0, boldStart) +\n        '<b>' +\n        item.name.substring(boldStart, boldEnd) +\n        '</b>' +\n        item.name.substring(boldEnd)\n      );\n    };\n\n    for (const item of jumpListItems ?? []) {\n      const nameLowerCase = item.name.toLowerCase();\n\n      if (nameLowerCase === filterLowerCase) {\n        item.link.innerHTML = makeLinkHtml(item, 0, item.name.length);\n        exactMatches.push(item);\n      } else if (nameLowerCase.startsWith(filterLowerCase)) {\n        item.link.innerHTML = makeLinkHtml(item, 0, filter.length);\n        prefixMatches.push(item);\n      } else {\n        const index = nameLowerCase.indexOf(filterLowerCase);\n        if (index > -1) {\n          item.link.innerHTML = makeLinkHtml(item, index, index + filter.length);\n          infixMatches.push(item);\n        }\n      }\n    }\n\n    for (const item of exactMatches.concat(prefixMatches).concat(infixMatches)) {\n      jumpList?.appendChild(item.link);\n    }\n  } else {\n    if (!jumpListItems || jumpListItems.length === 0) {\n      const msg = document.createElement('i');\n      msg.innerHTML = 'There are no symbols on this page.';\n      jumpList?.appendChild(msg);\n    }\n    // No filter set; display all items in their existing order.\n    for (const item of jumpListItems ?? []) {\n      item.link.innerHTML = item.name + ' <i>' + item.kind + '</i>';\n      jumpList?.appendChild(item.link);\n    }\n  }\n\n  if (jumpBody) {\n    jumpBody.scrollTop = 0;\n  }\n  if (jumpListItems?.length && jumpList && jumpList.children.length > 0) {\n    setActiveJumpItem(0);\n  }\n}\n\n// Set the active jump item to n.\nfunction setActiveJumpItem(n: number) {\n  const cs = jumpList?.children as HTMLCollectionOf<HTMLElement> | null | undefined;\n  if (!cs || !jumpBody) {\n    return;\n  }\n  if (activeJumpItem >= 0) {\n    cs[activeJumpItem].classList.remove('JumpDialog-active');\n  }\n  if (n >= cs.length) {\n    n = cs.length - 1;\n  }\n  if (n >= 0) {\n    cs[n].classList.add('JumpDialog-active');\n\n    // Scroll so the active item is visible.\n    // For some reason cs[n].scrollIntoView() doesn't behave as I'd expect:\n    // it moves the entire dialog box in the viewport.\n\n    // Get the top and bottom of the active item relative to jumpBody.\n    const activeTop = cs[n].offsetTop - cs[0].offsetTop;\n    const activeBottom = activeTop + cs[n].clientHeight;\n    if (activeTop < jumpBody.scrollTop) {\n      // Off the top; scroll up.\n      jumpBody.scrollTop = activeTop;\n    } else if (activeBottom > jumpBody.scrollTop + jumpBody.clientHeight) {\n      // Off the bottom; scroll down.\n      jumpBody.scrollTop = activeBottom - jumpBody.clientHeight;\n    }\n  }\n  activeJumpItem = n;\n}\n\n// Increment the activeJumpItem by delta.\nfunction incActiveJumpItem(delta: number) {\n  if (activeJumpItem < 0) {\n    return;\n  }\n  let n = activeJumpItem + delta;\n  if (n < 0) {\n    n = 0;\n  }\n  setActiveJumpItem(n);\n}\n\nexport function initModals(): void {\n  // Pressing a key in the filter updates the list (if the filter actually changed).\n  jumpFilter?.addEventListener('keyup', function () {\n    if (jumpFilter.value.toUpperCase() != lastFilterValue.toUpperCase()) {\n      updateJumpList(jumpFilter.value);\n    }\n  });\n\n  // Pressing enter in the filter selects the first element in the list.\n  jumpFilter?.addEventListener('keydown', function (event) {\n    const upArrow = 38;\n    const downArrow = 40;\n    const enterKey = 13;\n    switch (event.which) {\n      case upArrow:\n        incActiveJumpItem(-1);\n        event.preventDefault();\n        break;\n      case downArrow:\n        incActiveJumpItem(1);\n        event.preventDefault();\n        break;\n      case enterKey:\n        if (activeJumpItem >= 0) {\n          if (jumpList) {\n            (jumpList.children[activeJumpItem] as HTMLElement).click();\n            event.preventDefault();\n          }\n        }\n        break;\n    }\n  });\n\n  const shortcutsDialog = document.querySelector<HTMLDialogElement>('.ShortcutsDialog');\n\n  // Keyboard shortcuts:\n  // - Pressing '/' focuses the search box\n  // - Pressing 'f' or 'F' opens the jump-to-symbol dialog.\n  // - Pressing '?' opens up the shortcut dialog.\n  // Ignore a keypress if a dialog is already open, or if it is pressed on a\n  // component that wants to consume it.\n  document.addEventListener('keypress', function (e) {\n    if (jumpDialog?.open || shortcutsDialog?.open) {\n      return;\n    }\n    const target = e.target as HTMLElement | null;\n    const t = target?.tagName;\n    if (t == 'INPUT' || t == 'SELECT' || t == 'TEXTAREA') {\n      return;\n    }\n    if (target?.contentEditable == 'true') {\n      return;\n    }\n    if (e.metaKey || e.ctrlKey) {\n      return;\n    }\n    const ch = String.fromCharCode(e.which);\n    switch (ch) {\n      case 'f':\n      case 'F':\n        e.preventDefault();\n        if (jumpFilter) {\n          jumpFilter.value = '';\n        }\n        jumpDialog?.showModal();\n        jumpFilter?.focus();\n        updateJumpList('');\n        break;\n      case '?':\n        shortcutsDialog?.showModal();\n        break;\n    }\n  });\n\n  const jumpOutlineInput = document.querySelector('.js-jumpToInput');\n  if (jumpOutlineInput) {\n    jumpOutlineInput.addEventListener('click', () => {\n      if (jumpFilter) {\n        jumpFilter.value = '';\n      }\n      updateJumpList('');\n    });\n  }\n}\n"],
-  "mappings": "AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,GAwBA,KAAM,GAAa,SAAS,cAAiC,eACvD,EAAW,iBAAY,cAA8B,oBACrD,EAAW,iBAAY,cAA8B,oBACrD,EAAa,iBAAY,cAAgC,qBACzD,EAAM,SAAS,cAA8B,qBASnD,GAAI,GAUJ,YAAgC,CAC9B,KAAM,GAAQ,GACd,GAAI,EAAC,EACL,UAAW,KAAM,GAAI,iBAAiB,eACpC,EAAM,KAAK,EAAgB,IAI7B,SAAW,KAAQ,GACjB,EAAK,KAAK,iBAAiB,QAAS,UAAY,CAC9C,WAAY,UAIhB,SAAM,KAAK,SAAU,EAAG,EAAG,CACzB,MAAO,GAAE,MAAM,cAAc,EAAE,SAE1B,GAST,WAAyB,EAA2B,CAzEpD,MA0EE,KAAM,GAAI,SAAS,cAAc,KAC3B,EAAO,EAAG,aAAa,MAC7B,EAAE,aAAa,OAAQ,IAAM,GAC7B,EAAE,aAAa,WAAY,MAC3B,EAAE,aAAa,YAAa,gBAC5B,KAAM,GAAO,EAAG,aAAa,aAC7B,MAAO,CACL,KAAM,EACN,KAAM,UAAQ,GACd,KAAM,UAAQ,GACd,MAAO,oBAAM,gBAAN,OAAuB,IAIlC,GAAI,GACA,EAAiB,GAIrB,WAAwB,EAAgB,CAQtC,IAPA,EAAkB,EACb,GACH,GAAgB,KAElB,EAAkB,IAGX,iBAAU,YACf,EAAS,WAAW,SAGtB,GAAI,EAAQ,CAQV,KAAM,GAAkB,EAAO,cAEzB,EAAe,GACf,EAAgB,GAChB,EAAe,GAIf,EAAe,CAAC,EAAoB,EAAmB,IAEzD,EAAK,KAAK,UAAU,EAAG,GACvB,MACA,EAAK,KAAK,UAAU,EAAW,GAC/B,OACA,EAAK,KAAK,UAAU,GAIxB,SAAW,KAAQ,WAAiB,GAAI,CACtC,KAAM,GAAgB,EAAK,KAAK,cAEhC,GAAI,IAAkB,EACpB,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAK,KAAK,QACtD,EAAa,KAAK,WACT,EAAc,WAAW,GAClC,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAO,QACnD,EAAc,KAAK,OACd,CACL,KAAM,GAAQ,EAAc,QAAQ,GACpC,AAAI,EAAQ,IACV,GAAK,KAAK,UAAY,EAAa,EAAM,EAAO,EAAQ,EAAO,QAC/D,EAAa,KAAK,KAKxB,SAAW,KAAQ,GAAa,OAAO,GAAe,OAAO,GAC3D,WAAU,YAAY,EAAK,UAExB,CACL,GAAI,CAAC,GAAiB,EAAc,SAAW,EAAG,CAChD,KAAM,GAAM,SAAS,cAAc,KACnC,EAAI,UAAY,qCAChB,WAAU,YAAY,GAGxB,SAAW,KAAQ,WAAiB,GAClC,EAAK,KAAK,UAAY,EAAK,KAAO,OAAS,EAAK,KAAO,OACvD,WAAU,YAAY,EAAK,MAI/B,AAAI,GACF,GAAS,UAAY,GAEnB,kBAAe,SAAU,GAAY,EAAS,SAAS,OAAS,GAClE,EAAkB,GAKtB,WAA2B,EAAW,CACpC,KAAM,GAAK,iBAAU,SACrB,GAAI,GAAC,GAAM,CAAC,GASZ,IANI,GAAkB,GACpB,EAAG,GAAgB,UAAU,OAAO,qBAElC,GAAK,EAAG,QACV,GAAI,EAAG,OAAS,GAEd,GAAK,EAAG,CACV,EAAG,GAAG,UAAU,IAAI,qBAOpB,KAAM,GAAY,EAAG,GAAG,UAAY,EAAG,GAAG,UACpC,EAAe,EAAY,EAAG,GAAG,aACvC,AAAI,EAAY,EAAS,UAEvB,EAAS,UAAY,EACZ,EAAe,EAAS,UAAY,EAAS,cAEtD,GAAS,UAAY,EAAe,EAAS,cAGjD,EAAiB,GAInB,WAA2B,EAAe,CACxC,GAAI,EAAiB,EACnB,OAEF,GAAI,GAAI,EAAiB,EACzB,AAAI,EAAI,GACN,GAAI,GAEN,EAAkB,GAGb,YAA4B,CAEjC,WAAY,iBAAiB,QAAS,UAAY,CAChD,AAAI,EAAW,MAAM,eAAiB,EAAgB,eACpD,EAAe,EAAW,SAK9B,WAAY,iBAAiB,UAAW,SAAU,EAAO,CACvD,KAAM,GAAU,GACV,EAAY,GACZ,EAAW,GACjB,OAAQ,EAAM,WACP,GACH,EAAkB,IAClB,EAAM,iBACN,UACG,GACH,EAAkB,GAClB,EAAM,iBACN,UACG,GACH,AAAI,GAAkB,GAChB,GACD,GAAS,SAAS,GAAgC,QACnD,EAAM,kBAGV,SAIN,KAAM,GAAkB,SAAS,cAAiC,oBAQlE,SAAS,iBAAiB,WAAY,SAAU,EAAG,CACjD,GAAI,kBAAY,OAAQ,kBAAiB,MACvC,OAEF,KAAM,GAAS,EAAE,OACX,EAAI,iBAAQ,QAOlB,GANI,GAAK,SAAW,GAAK,UAAY,GAAK,YAGtC,kBAAQ,kBAAmB,QAG3B,EAAE,SAAW,EAAE,QACjB,OAGF,OADW,OAAO,aAAa,EAAE,YAE1B,QACA,IACH,EAAE,iBACE,GACF,GAAW,MAAQ,IAErB,WAAY,YACZ,WAAY,QACZ,EAAe,IACf,UACG,IACH,WAAiB,YACjB,SAIN,KAAM,GAAmB,SAAS,cAAc,mBAChD,AAAI,GACF,EAAiB,iBAAiB,QAAS,IAAM,CAC/C,AAAI,GACF,GAAW,MAAQ,IAErB,EAAe",
+  "sourcesContent": ["/*!\n * @license\n * Copyright 2019-2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n// This file implements the behavior of the \"jump to symbol\" dialog for Go\n// package documentation, as well as the simple dialog that displays keyboard\n// shortcuts.\n\n// The DOM for the dialogs is at the bottom of static/frontend/unit/main/_modals.tmpl.\n// The CSS is in static/frontend/unit/main/_modals.css.\n\n// The dialog is activated by pressing the 'f' key. It presents a list\n// (#JumpDialog-list) of all Go symbols displayed in the documentation.\n// Entering text in the dialog's text box (#JumpDialog-filter) restricts the\n// list to symbols containing the text. Clicking on an symbol jumps to\n// its documentation.\n\n// This code is based on\n// https://go.googlesource.com/gddo/+/refs/heads/master/gddo-server/assets/site.js.\n// It was modified to remove the dependence on jquery and bootstrap.\n\nimport { keyboard } from '../keyboard/keyboard';\n\nconst jumpDialog = document.querySelector<HTMLDialogElement>('.JumpDialog');\nconst jumpBody = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-body');\nconst jumpList = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-list');\nconst jumpFilter = jumpDialog?.querySelector<HTMLInputElement>('.JumpDialog-input');\nconst doc = document.querySelector<HTMLDivElement>('.js-documentation');\n\ninterface JumpListItem {\n  link: HTMLAnchorElement;\n  name: string;\n  kind: string;\n  lower: string;\n}\n\nlet jumpListItems: JumpListItem[] | undefined; // All the symbols in the doc; computed only once.\n\n// collectJumpListItems returns a list of items, one for each symbol in the\n// documentation on the current page.\n//\n// It uses the data-kind attribute generated in the documentation HTML to find\n// the symbols and their id attributes.\n//\n// If there are no data-kind attributes, then we have older doc; fall back to\n// a less precise method.\nfunction collectJumpListItems() {\n  const items = [];\n  if (!doc) return;\n  for (const el of doc.querySelectorAll('[data-kind]')) {\n    items.push(newJumpListItem(el));\n  }\n\n  // Clicking on any of the links closes the dialog.\n  for (const item of items) {\n    item.link.addEventListener('click', function () {\n      jumpDialog?.close();\n    });\n  }\n  // Sort case-insensitively by symbol name.\n  items.sort(function (a, b) {\n    return a.lower.localeCompare(b.lower);\n  });\n  return items;\n}\n\n// newJumpListItem creates a new item for the DOM element el.\n// An item is an object with:\n// - name: the element's id (which is the symbol name)\n// - kind: the element's kind (function, variable, etc.),\n// - link: a link ('a' tag) to the element\n// - lower: the name in lower case, just for sorting\nfunction newJumpListItem(el: Element): JumpListItem {\n  const a = document.createElement('a');\n  const name = el.getAttribute('id');\n  a.setAttribute('href', '#' + name);\n  a.setAttribute('tabindex', '-1');\n  a.setAttribute('data-gtmc', 'jump to link');\n  const kind = el.getAttribute('data-kind');\n  return {\n    link: a,\n    name: name ?? '',\n    kind: kind ?? '',\n    lower: name?.toLowerCase() ?? '', // for sorting\n  };\n}\n\nlet lastFilterValue: string; // The last contents of the filter text box.\nlet activeJumpItem = -1; // The index of the currently active item in the list.\n\n// updateJumpList sets the elements of the dialog list to\n// everything whose name contains filter.\nfunction updateJumpList(filter: string) {\n  lastFilterValue = filter;\n  if (!jumpListItems) {\n    jumpListItems = collectJumpListItems();\n  }\n  setActiveJumpItem(-1);\n\n  // Remove all children from list.\n  while (jumpList?.firstChild) {\n    jumpList.firstChild.remove();\n  }\n\n  if (filter) {\n    // A filter is set. We treat the filter as a substring that can appear in\n    // an item name (case insensitive), and find the following matches - in\n    // order of priority:\n    //\n    // 1. Exact matches (the filter matches the item's name exactly)\n    // 2. Prefix matches (the item's name starts with filter)\n    // 3. Infix matches (the filter is a substring of the item's name)\n    const filterLowerCase = filter.toLowerCase();\n\n    const exactMatches = [];\n    const prefixMatches = [];\n    const infixMatches = [];\n\n    // makeLinkHtml creates the link name HTML for a list item. item is the DOM\n    // item. item.name.substr(boldStart, boldEnd) will be bolded.\n    const makeLinkHtml = (item: JumpListItem, boldStart: number, boldEnd: number) => {\n      return (\n        item.name.substring(0, boldStart) +\n        '<b>' +\n        item.name.substring(boldStart, boldEnd) +\n        '</b>' +\n        item.name.substring(boldEnd)\n      );\n    };\n\n    for (const item of jumpListItems ?? []) {\n      const nameLowerCase = item.name.toLowerCase();\n\n      if (nameLowerCase === filterLowerCase) {\n        item.link.innerHTML = makeLinkHtml(item, 0, item.name.length);\n        exactMatches.push(item);\n      } else if (nameLowerCase.startsWith(filterLowerCase)) {\n        item.link.innerHTML = makeLinkHtml(item, 0, filter.length);\n        prefixMatches.push(item);\n      } else {\n        const index = nameLowerCase.indexOf(filterLowerCase);\n        if (index > -1) {\n          item.link.innerHTML = makeLinkHtml(item, index, index + filter.length);\n          infixMatches.push(item);\n        }\n      }\n    }\n\n    for (const item of exactMatches.concat(prefixMatches).concat(infixMatches)) {\n      jumpList?.appendChild(item.link);\n    }\n  } else {\n    if (!jumpListItems || jumpListItems.length === 0) {\n      const msg = document.createElement('i');\n      msg.innerHTML = 'There are no symbols on this page.';\n      jumpList?.appendChild(msg);\n    }\n    // No filter set; display all items in their existing order.\n    for (const item of jumpListItems ?? []) {\n      item.link.innerHTML = item.name + ' <i>' + item.kind + '</i>';\n      jumpList?.appendChild(item.link);\n    }\n  }\n\n  if (jumpBody) {\n    jumpBody.scrollTop = 0;\n  }\n  if (jumpListItems?.length && jumpList && jumpList.children.length > 0) {\n    setActiveJumpItem(0);\n  }\n}\n\n// Set the active jump item to n.\nfunction setActiveJumpItem(n: number) {\n  const cs = jumpList?.children as HTMLCollectionOf<HTMLElement> | null | undefined;\n  if (!cs || !jumpBody) {\n    return;\n  }\n  if (activeJumpItem >= 0) {\n    cs[activeJumpItem].classList.remove('JumpDialog-active');\n  }\n  if (n >= cs.length) {\n    n = cs.length - 1;\n  }\n  if (n >= 0) {\n    cs[n].classList.add('JumpDialog-active');\n\n    // Scroll so the active item is visible.\n    // For some reason cs[n].scrollIntoView() doesn't behave as I'd expect:\n    // it moves the entire dialog box in the viewport.\n\n    // Get the top and bottom of the active item relative to jumpBody.\n    const activeTop = cs[n].offsetTop - cs[0].offsetTop;\n    const activeBottom = activeTop + cs[n].clientHeight;\n    if (activeTop < jumpBody.scrollTop) {\n      // Off the top; scroll up.\n      jumpBody.scrollTop = activeTop;\n    } else if (activeBottom > jumpBody.scrollTop + jumpBody.clientHeight) {\n      // Off the bottom; scroll down.\n      jumpBody.scrollTop = activeBottom - jumpBody.clientHeight;\n    }\n  }\n  activeJumpItem = n;\n}\n\n// Increment the activeJumpItem by delta.\nfunction incActiveJumpItem(delta: number) {\n  if (activeJumpItem < 0) {\n    return;\n  }\n  let n = activeJumpItem + delta;\n  if (n < 0) {\n    n = 0;\n  }\n  setActiveJumpItem(n);\n}\n\nexport function initModals(): void {\n  // Pressing a key in the filter updates the list (if the filter actually changed).\n  jumpFilter?.addEventListener('keyup', function () {\n    if (jumpFilter.value.toUpperCase() != lastFilterValue.toUpperCase()) {\n      updateJumpList(jumpFilter.value);\n    }\n  });\n\n  // Pressing enter in the filter selects the first element in the list.\n  jumpFilter?.addEventListener('keydown', function (event) {\n    const upArrow = 38;\n    const downArrow = 40;\n    const enterKey = 13;\n    switch (event.which) {\n      case upArrow:\n        incActiveJumpItem(-1);\n        event.preventDefault();\n        break;\n      case downArrow:\n        incActiveJumpItem(1);\n        event.preventDefault();\n        break;\n      case enterKey:\n        if (activeJumpItem >= 0) {\n          if (jumpList) {\n            (jumpList.children[activeJumpItem] as HTMLElement).click();\n            event.preventDefault();\n          }\n        }\n        break;\n    }\n  });\n\n  const shortcutsDialog = document.querySelector<HTMLDialogElement>('.ShortcutsDialog');\n\n  // - Pressing 'f' or 'F' opens the jump-to-symbol dialog.\n  // - Pressing '?' opens up the shortcut dialog.\n  // Ignore a keypress if a dialog is already open, or if it is pressed on a\n  // component that wants to consume it.\n  keyboard\n    .on('f', 'open jump to modal', e => {\n      if (jumpDialog?.open || shortcutsDialog?.open) {\n        return;\n      }\n      e.preventDefault();\n      if (jumpFilter) {\n        jumpFilter.value = '';\n      }\n      jumpDialog?.showModal();\n      jumpFilter?.focus();\n      updateJumpList('');\n    })\n    .on('?', 'open shortcuts modal', () => {\n      if (jumpDialog?.open || shortcutsDialog?.open) {\n        return;\n      }\n      shortcutsDialog?.showModal();\n    });\n\n  const jumpOutlineInput = document.querySelector('.js-jumpToInput');\n  if (jumpOutlineInput) {\n    jumpOutlineInput.addEventListener('click', () => {\n      if (jumpFilter) {\n        jumpFilter.value = '';\n      }\n      updateJumpList('');\n    });\n  }\n}\n"],
+  "mappings": "AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,GAwBA,gDAEA,KAAM,GAAa,SAAS,cAAiC,eACvD,EAAW,iBAAY,cAA8B,oBACrD,EAAW,iBAAY,cAA8B,oBACrD,EAAa,iBAAY,cAAgC,qBACzD,EAAM,SAAS,cAA8B,qBASnD,GAAI,GAUJ,YAAgC,CAC9B,KAAM,GAAQ,GACd,GAAI,EAAC,EACL,UAAW,KAAM,GAAI,iBAAiB,eACpC,EAAM,KAAK,EAAgB,IAI7B,SAAW,KAAQ,GACjB,EAAK,KAAK,iBAAiB,QAAS,UAAY,CAC9C,WAAY,UAIhB,SAAM,KAAK,SAAU,EAAG,EAAG,CACzB,MAAO,GAAE,MAAM,cAAc,EAAE,SAE1B,GAST,WAAyB,EAA2B,CA3EpD,MA4EE,KAAM,GAAI,SAAS,cAAc,KAC3B,EAAO,EAAG,aAAa,MAC7B,EAAE,aAAa,OAAQ,IAAM,GAC7B,EAAE,aAAa,WAAY,MAC3B,EAAE,aAAa,YAAa,gBAC5B,KAAM,GAAO,EAAG,aAAa,aAC7B,MAAO,CACL,KAAM,EACN,KAAM,UAAQ,GACd,KAAM,UAAQ,GACd,MAAO,oBAAM,gBAAN,OAAuB,IAIlC,GAAI,GACA,EAAiB,GAIrB,WAAwB,EAAgB,CAQtC,IAPA,EAAkB,EACb,GACH,GAAgB,KAElB,EAAkB,IAGX,iBAAU,YACf,EAAS,WAAW,SAGtB,GAAI,EAAQ,CAQV,KAAM,GAAkB,EAAO,cAEzB,EAAe,GACf,EAAgB,GAChB,EAAe,GAIf,EAAe,CAAC,EAAoB,EAAmB,IAEzD,EAAK,KAAK,UAAU,EAAG,GACvB,MACA,EAAK,KAAK,UAAU,EAAW,GAC/B,OACA,EAAK,KAAK,UAAU,GAIxB,SAAW,KAAQ,WAAiB,GAAI,CACtC,KAAM,GAAgB,EAAK,KAAK,cAEhC,GAAI,IAAkB,EACpB,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAK,KAAK,QACtD,EAAa,KAAK,WACT,EAAc,WAAW,GAClC,EAAK,KAAK,UAAY,EAAa,EAAM,EAAG,EAAO,QACnD,EAAc,KAAK,OACd,CACL,KAAM,GAAQ,EAAc,QAAQ,GACpC,AAAI,EAAQ,IACV,GAAK,KAAK,UAAY,EAAa,EAAM,EAAO,EAAQ,EAAO,QAC/D,EAAa,KAAK,KAKxB,SAAW,KAAQ,GAAa,OAAO,GAAe,OAAO,GAC3D,WAAU,YAAY,EAAK,UAExB,CACL,GAAI,CAAC,GAAiB,EAAc,SAAW,EAAG,CAChD,KAAM,GAAM,SAAS,cAAc,KACnC,EAAI,UAAY,qCAChB,WAAU,YAAY,GAGxB,SAAW,KAAQ,WAAiB,GAClC,EAAK,KAAK,UAAY,EAAK,KAAO,OAAS,EAAK,KAAO,OACvD,WAAU,YAAY,EAAK,MAI/B,AAAI,GACF,GAAS,UAAY,GAEnB,kBAAe,SAAU,GAAY,EAAS,SAAS,OAAS,GAClE,EAAkB,GAKtB,WAA2B,EAAW,CACpC,KAAM,GAAK,iBAAU,SACrB,GAAI,GAAC,GAAM,CAAC,GASZ,IANI,GAAkB,GACpB,EAAG,GAAgB,UAAU,OAAO,qBAElC,GAAK,EAAG,QACV,GAAI,EAAG,OAAS,GAEd,GAAK,EAAG,CACV,EAAG,GAAG,UAAU,IAAI,qBAOpB,KAAM,GAAY,EAAG,GAAG,UAAY,EAAG,GAAG,UACpC,EAAe,EAAY,EAAG,GAAG,aACvC,AAAI,EAAY,EAAS,UAEvB,EAAS,UAAY,EACZ,EAAe,EAAS,UAAY,EAAS,cAEtD,GAAS,UAAY,EAAe,EAAS,cAGjD,EAAiB,GAInB,WAA2B,EAAe,CACxC,GAAI,EAAiB,EACnB,OAEF,GAAI,GAAI,EAAiB,EACzB,AAAI,EAAI,GACN,GAAI,GAEN,EAAkB,GAGb,YAA4B,CAEjC,WAAY,iBAAiB,QAAS,UAAY,CAChD,AAAI,EAAW,MAAM,eAAiB,EAAgB,eACpD,EAAe,EAAW,SAK9B,WAAY,iBAAiB,UAAW,SAAU,EAAO,CACvD,KAAM,GAAU,GACV,EAAY,GACZ,EAAW,GACjB,OAAQ,EAAM,WACP,GACH,EAAkB,IAClB,EAAM,iBACN,UACG,GACH,EAAkB,GAClB,EAAM,iBACN,UACG,GACH,AAAI,GAAkB,GAChB,GACD,GAAS,SAAS,GAAgC,QACnD,EAAM,kBAGV,SAIN,KAAM,GAAkB,SAAS,cAAiC,oBAMlE,EACG,GAAG,IAAK,qBAAsB,GAAK,CAClC,AAAI,kBAAY,OAAQ,kBAAiB,OAGzC,GAAE,iBACE,GACF,GAAW,MAAQ,IAErB,WAAY,YACZ,WAAY,QACZ,EAAe,OAEhB,GAAG,IAAK,uBAAwB,IAAM,CACrC,AAAI,kBAAY,OAAQ,kBAAiB,OAGzC,WAAiB,cAGrB,KAAM,GAAmB,SAAS,cAAc,mBAChD,AAAI,GACF,EAAiB,iBAAiB,QAAS,IAAM,CAC/C,AAAI,GACF,GAAW,MAAQ,IAErB,EAAe",
   "names": []
 }
diff --git a/static/shared/jump/jump.ts b/static/shared/jump/jump.ts
index fe4965a..917dc2a 100644
--- a/static/shared/jump/jump.ts
+++ b/static/shared/jump/jump.ts
@@ -22,6 +22,8 @@
 // https://go.googlesource.com/gddo/+/refs/heads/master/gddo-server/assets/site.js.
 // It was modified to remove the dependence on jquery and bootstrap.
 
+import { keyboard } from '../keyboard/keyboard';
+
 const jumpDialog = document.querySelector<HTMLDialogElement>('.JumpDialog');
 const jumpBody = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-body');
 const jumpList = jumpDialog?.querySelector<HTMLDivElement>('.JumpDialog-list');
@@ -251,44 +253,29 @@
 
   const shortcutsDialog = document.querySelector<HTMLDialogElement>('.ShortcutsDialog');
 
-  // Keyboard shortcuts:
-  // - Pressing '/' focuses the search box
   // - Pressing 'f' or 'F' opens the jump-to-symbol dialog.
   // - Pressing '?' opens up the shortcut dialog.
   // Ignore a keypress if a dialog is already open, or if it is pressed on a
   // component that wants to consume it.
-  document.addEventListener('keypress', function (e) {
-    if (jumpDialog?.open || shortcutsDialog?.open) {
-      return;
-    }
-    const target = e.target as HTMLElement | null;
-    const t = target?.tagName;
-    if (t == 'INPUT' || t == 'SELECT' || t == 'TEXTAREA') {
-      return;
-    }
-    if (target?.contentEditable == 'true') {
-      return;
-    }
-    if (e.metaKey || e.ctrlKey) {
-      return;
-    }
-    const ch = String.fromCharCode(e.which);
-    switch (ch) {
-      case 'f':
-      case 'F':
-        e.preventDefault();
-        if (jumpFilter) {
-          jumpFilter.value = '';
-        }
-        jumpDialog?.showModal();
-        jumpFilter?.focus();
-        updateJumpList('');
-        break;
-      case '?':
-        shortcutsDialog?.showModal();
-        break;
-    }
-  });
+  keyboard
+    .on('f', 'open jump to modal', e => {
+      if (jumpDialog?.open || shortcutsDialog?.open) {
+        return;
+      }
+      e.preventDefault();
+      if (jumpFilter) {
+        jumpFilter.value = '';
+      }
+      jumpDialog?.showModal();
+      jumpFilter?.focus();
+      updateJumpList('');
+    })
+    .on('?', 'open shortcuts modal', () => {
+      if (jumpDialog?.open || shortcutsDialog?.open) {
+        return;
+      }
+      shortcutsDialog?.showModal();
+    });
 
   const jumpOutlineInput = document.querySelector('.js-jumpToInput');
   if (jumpOutlineInput) {