Huge News!Announcing our $40M Series B led by Abstract Ventures.Learn More →
Socket
Sign inDemoInstall
Socket
Sign inDemoInstall

@observablehq/runtime

Package Overview
Dependencies
Maintainers
3
Versions
134
Alerts
File Explorer

Advanced tools

License
Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

@observablehq/runtime - npm Package Compare versions

Comparing version 4.2.0 to 4.2.1

4

dist/runtime.js

@@ -1,2 +0,2 @@

// @observablehq/runtime v4.2.0 Copyright 2019 Observable, Inc.
function e(e,t,n){n=n||{};var r=e.ownerDocument,i=r.defaultView.CustomEvent;"function"==typeof i?i=new i(t,{detail:n}):((i=r.createEvent("Event")).initEvent(t,!1,!1),i.detail=n),e.dispatchEvent(i)}function t(e){return Array.isArray(e)||e instanceof Int8Array||e instanceof Int16Array||e instanceof Int32Array||e instanceof Uint8Array||e instanceof Uint8ClampedArray||e instanceof Uint16Array||e instanceof Uint32Array||e instanceof Float32Array||e instanceof Float64Array}function n(e){return e===(0|e)+""}function r(e){const t=document.createElement("span");return t.className="observablehq--cellname",t.textContent=`${e} = `,t}const i=Symbol.prototype.toString;function o(e){return i.call(e)}const{getOwnPropertySymbols:s,prototype:{hasOwnProperty:a}}=Object,{toStringTag:l}=Symbol,u={},c=s;function d(e,t){return a.call(e,t)}function h(e){return e[l]||e.constructor&&e.constructor.name||"Object"}function p(e,t){try{const n=e[t];return n&&n.constructor,n}catch(e){return u}}function f(n,i,o){const s=t(n);let a,l,u;n instanceof Map?(a=`Map(${n.size})`,l=m):n instanceof Set?(a=`Set(${n.size})`,l=g):s?(a=`${n.constructor.name}(${n.length})`,l=b):(a=h(n),l=v);const c=document.createElement("span");c.className="observablehq--expanded",o&&c.appendChild(r(o));const d=c.appendChild(document.createElement("a"));d.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M4 7L0 1h8z' fill='currentColor' />\n </svg>",d.appendChild(document.createTextNode(`${a}${s?" [":" {"}`)),d.addEventListener("mouseup",function(e){e.stopPropagation(),J(c,k(n,null,o))}),l=l(n);for(let e=0;!(u=l.next()).done&&e<20;++e)c.appendChild(u.value);if(!u.done){const t=c.appendChild(document.createElement("a"));t.className="observablehq--field",t.style.display="block",t.appendChild(document.createTextNode(" … more")),t.addEventListener("mouseup",function(t){t.stopPropagation(),c.insertBefore(u.value,c.lastChild.previousSibling);for(let e=0;!(u=l.next()).done&&e<19;++e)c.insertBefore(u.value,c.lastChild.previousSibling);u.done&&c.removeChild(c.lastChild.previousSibling),e(c,"load")})}return c.appendChild(document.createTextNode(s?"]":"}")),c}function*m(e){for(const[t,n]of e)yield w(t,n);yield*v(e)}function*g(e){for(const t of e)yield y(t);yield*v(e)}function*b(e){for(let t=0,n=e.length;t<n;++t)t in e&&(yield _(t,p(e,t),"observablehq--index"));for(const t in e)!n(t)&&d(e,t)&&(yield _(t,p(e,t),"observablehq--key"));for(const t of c(e))yield _(o(t),p(e,t),"observablehq--symbol")}function*v(e){for(const t in e)d(e,t)&&(yield _(t,p(e,t),"observablehq--key"));for(const t of c(e))yield _(o(t),p(e,t),"observablehq--symbol")}function _(e,t,n){const r=document.createElement("div"),i=r.appendChild(document.createElement("span"));return r.className="observablehq--field",i.className=n,i.textContent=` ${e}`,r.appendChild(document.createTextNode(": ")),r.appendChild(G(t)),r}function w(e,t){const n=document.createElement("div");return n.className="observablehq--field",n.appendChild(document.createTextNode(" ")),n.appendChild(G(e)),n.appendChild(document.createTextNode(" => ")),n.appendChild(G(t)),n}function y(e){const t=document.createElement("div");return t.className="observablehq--field",t.appendChild(document.createTextNode(" ")),t.appendChild(G(e)),t}function x(e){const t=window.getSelection();return"Range"===t.type&&(t.containsNode(e,!0)||t.anchorNode.isSelfOrDescendant(e)||t.focusNode.isSelfOrDescendant(e))}function k(e,n,i){const o=t(e);let s,a,l;if(e instanceof Map?(s=`Map(${e.size})`,a=C):e instanceof Set?(s=`Set(${e.size})`,a=E):o?(s=`${e.constructor.name}(${e.length})`,a=S):(s=h(e),a=$),n){const t=document.createElement("span");return t.className="observablehq--shallow",i&&t.appendChild(r(i)),t.appendChild(document.createTextNode(s)),t.addEventListener("mouseup",function(n){x(t)||(n.stopPropagation(),J(t,k(e)))}),t}const u=document.createElement("span");u.className="observablehq--collapsed",i&&u.appendChild(r(i));const c=u.appendChild(document.createElement("a"));c.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M7 4L1 8V0z' fill='currentColor' />\n </svg>",c.appendChild(document.createTextNode(`${s}${o?" [":" {"}`)),u.addEventListener("mouseup",function(t){x(u)||(t.stopPropagation(),J(u,f(e,0,i)))},!0),a=a(e);for(let e=0;!(l=a.next()).done&&e<20;++e)e>0&&u.appendChild(document.createTextNode(", ")),u.appendChild(l.value);return l.done||u.appendChild(document.createTextNode(", …")),u.appendChild(document.createTextNode(o?"]":"}")),u}function*C(e){for(const[t,n]of e)yield L(t,n);yield*$(e)}function*E(e){for(const t of e)yield G(t,!0);yield*$(e)}function*S(e){let t=-1,r=0;for(const n=e.length;r<n;++r)r in e&&(r>t+1&&(yield N(r-t-1)),yield G(p(e,r),!0),t=r);r>t+1&&(yield N(r-t-1));for(const t in e)!n(t)&&d(e,t)&&(yield q(t,p(e,t),"observablehq--key"));for(const t of c(e))yield q(o(t),p(e,t),"observablehq--symbol")}function*$(e){for(const t in e)d(e,t)&&(yield q(t,p(e,t),"observablehq--key"));for(const t of c(e))yield q(o(t),p(e,t),"observablehq--symbol")}function N(e){const t=document.createElement("span");return t.className="observablehq--empty",t.textContent=1===e?"empty":`empty × ${e}`,t}function q(e,t,n){const r=document.createDocumentFragment(),i=r.appendChild(document.createElement("span"));return i.className=n,i.textContent=e,r.appendChild(document.createTextNode(": ")),r.appendChild(G(t,!0)),r}function L(e,t){const n=document.createDocumentFragment();return n.appendChild(G(e,!0)),n.appendChild(document.createTextNode(" => ")),n.appendChild(G(t,!0)),n}function P(e,t){var n=e+"",r=n.length;return r<t?new Array(t-r+1).join(0)+n:n}function j(e){return e<0?"-"+P(-e,6):e>9999?"+"+P(e,6):P(e,4)}var A=Error.prototype.toString;var O=RegExp.prototype.toString;const T=20;function M(e){return e.replace(/[\\`\x00-\x09\x0b-\x19]|\${/g,U)}function U(e){var t=e.charCodeAt(0);switch(t){case 8:return"\\b";case 9:return"\\t";case 11:return"\\v";case 12:return"\\f";case 13:return"\\r"}return t<16?"\\x0"+t.toString(16):t<32?"\\x"+t.toString(16):"\\"+e}function R(e,t){for(var n=0;t.exec(e);)++n;return n}var z=Function.prototype.toString,F={prefix:"async ƒ"},D={prefix:"async ƒ*"},I={prefix:"class"},H={prefix:"ƒ"},W={prefix:"ƒ*"};function B(e,t,n){var i=document.createElement("span");i.className="observablehq--function",n&&i.appendChild(r(n));var o=i.appendChild(document.createElement("span"));return o.className="observablehq--keyword",o.textContent=e.prefix,i.appendChild(document.createTextNode(t)),i}const{prototype:{toString:V}}=Object;function G(e,t,n,i){let s=typeof e;switch(s){case"boolean":case"undefined":e+="";break;case"number":e=0===e&&1/e<0?"-0":e+"";break;case"bigint":e+="n";break;case"symbol":e=o(e);break;case"function":return function(e,t){var n,r,i=z.call(e);switch(e.constructor&&e.constructor.name){case"AsyncFunction":n=F;break;case"AsyncGeneratorFunction":n=D;break;case"GeneratorFunction":n=W;break;default:n=/^class\b/.test(i)?I:H}return n===I?B(n,"",t):(r=/^(?:async\s*)?(\w+)\s*=>/.exec(i))?B(n,"("+r[1]+")",t):(r=/^(?:async\s*)?\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?B(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):(r=/^(?:async\s*)?function(?:\s*\*)?(?:\s*\w+)?\s*\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?B(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):B(n,"(…)",t)}(e,i);case"string":return function(e,t,n,i){if(!1===t){if(R(e,/["\n]/g)<=R(e,/`|\${/g)){const t=document.createElement("span");i&&t.appendChild(r(i));const n=t.appendChild(document.createElement("span"));return n.className="observablehq--string",n.textContent=JSON.stringify(e),t}const o=e.split("\n");if(o.length>T&&!n){const n=document.createElement("div");i&&n.appendChild(r(i));const s=n.appendChild(document.createElement("span"));s.className="observablehq--string",s.textContent="`"+M(o.slice(0,T).join("\n"));const a=n.appendChild(document.createElement("span")),l=o.length-T;return a.textContent=`Show ${l} truncated line${l>1?"s":""}`,a.className="observablehq--string-expand",a.addEventListener("mouseup",function(r){r.stopPropagation(),J(n,G(e,t,!0,i))}),n}const s=document.createElement("span");i&&s.appendChild(r(i));const a=s.appendChild(document.createElement("span"));return a.className=`observablehq--string${n?" observablehq--expanded":""}`,a.textContent="`"+M(e)+"`",s}const o=document.createElement("span");i&&o.appendChild(r(i));const s=o.appendChild(document.createElement("span"));return s.className="observablehq--string",s.textContent=JSON.stringify(e.length>100?`${e.slice(0,50)}…${e.slice(-49)}`:e),o}(e,t,n,i);default:if(null===e){s=null,e="null";break}if(e instanceof Date){s="date",a=e,e=isNaN(a)?"Invalid Date":function(e){return 0===e.getUTCMilliseconds()&&0===e.getUTCSeconds()&&0===e.getUTCMinutes()&&0===e.getUTCHours()}(a)?j(a.getUTCFullYear())+"-"+P(a.getUTCMonth()+1,2)+"-"+P(a.getUTCDate(),2):j(a.getFullYear())+"-"+P(a.getMonth()+1,2)+"-"+P(a.getDate(),2)+"T"+P(a.getHours(),2)+":"+P(a.getMinutes(),2)+(a.getMilliseconds()?":"+P(a.getSeconds(),2)+"."+P(a.getMilliseconds(),3):a.getSeconds()?":"+P(a.getSeconds(),2):"");break}if(e===u){s="forbidden",e="[forbidden]";break}switch(V.call(e)){case"[object RegExp]":s="regexp",e=function(e){return O.call(e)}(e);break;case"[object Error]":case"[object DOMException]":s="error",e=function(e){return e.stack||A.call(e)}(e);break;default:return(n?f:k)(e,t,i)}}var a;const l=document.createElement("span");i&&l.appendChild(r(i));const c=l.appendChild(document.createElement("span"));return c.className=`observablehq--${s}`,c.textContent=e,l}function J(t,n){t.classList.contains("observablehq--inspect")&&n.classList.add("observablehq--inspect"),t.parentNode.replaceChild(n,t),e(n,"load")}const Y=/\s+\(\d+:\d+\)$/m;class X{constructor(e){if(!e)throw new Error("invalid node");this._node=e,e.classList.add("observablehq")}pending(){const{_node:e}=this;e.classList.remove("observablehq--error"),e.classList.add("observablehq--running")}fulfilled(t,n){const{_node:r}=this;if((!(t instanceof Element||t instanceof Text)||t.parentNode&&t.parentNode!==r)&&(t=G(t,!1,r.firstChild&&r.firstChild.classList&&r.firstChild.classList.contains("observablehq--expanded"),n)).classList.add("observablehq--inspect"),r.classList.remove("observablehq--running","observablehq--error"),r.firstChild!==t)if(r.firstChild){for(;r.lastChild!==r.firstChild;)r.removeChild(r.lastChild);r.replaceChild(t,r.firstChild)}else r.appendChild(t);e(r,"update")}rejected(t,n){const{_node:i}=this;for(i.classList.remove("observablehq--running"),i.classList.add("observablehq--error");i.lastChild;)i.removeChild(i.lastChild);var o=document.createElement("div");o.className="observablehq--inspect",n&&o.appendChild(r(n)),o.appendChild(document.createTextNode((t+"").replace(Y,""))),i.appendChild(o),e(i,"error",{error:t})}}function K(e){return function(){return e}}X.into=function(e){if("string"==typeof e&&null==(e=document.querySelector(e)))throw new Error("container not found");return function(){return new X(e.appendChild(document.createElement("div")))}};var Q={math:"http://www.w3.org/1998/Math/MathML",svg:"http://www.w3.org/2000/svg",xhtml:"http://www.w3.org/1999/xhtml",xlink:"http://www.w3.org/1999/xlink",xml:"http://www.w3.org/XML/1998/namespace",xmlns:"http://www.w3.org/2000/xmlns/"};var Z=0;function ee(e){this.id=e,this.href=window.location.href+"#"+e}ee.prototype.toString=function(){return"url("+this.href+")"};var te={canvas:function(e,t){var n=document.createElement("canvas");return n.width=e,n.height=t,n},context2d:function(e,t,n){null==n&&(n=devicePixelRatio);var r=document.createElement("canvas");r.width=e*n,r.height=t*n,r.style.width=e+"px";var i=r.getContext("2d");return i.scale(n,n),i},download:function(e,t="untitled",n="Save"){const r=document.createElement("a"),i=r.appendChild(document.createElement("button"));async function o(){await new Promise(requestAnimationFrame),URL.revokeObjectURL(r.href),r.removeAttribute("href"),i.textContent=n,i.disabled=!1}return i.textContent=n,r.download=t,r.onclick=(async t=>{if(i.disabled=!0,r.href)return o();i.textContent="Saving…";try{const t=await("function"==typeof e?e():e);i.textContent="Download",r.href=URL.createObjectURL(t)}catch(e){i.textContent=n}if(t.eventPhase)return o();i.disabled=!1}),r},element:function(e,t){var n,r=e+="",i=r.indexOf(":");i>=0&&"xmlns"!==(r=e.slice(0,i))&&(e=e.slice(i+1));var o=Q.hasOwnProperty(r)?document.createElementNS(Q[r],e):document.createElement(e);if(t)for(var s in t)i=(r=s).indexOf(":"),n=t[s],i>=0&&"xmlns"!==(r=s.slice(0,i))&&(s=s.slice(i+1)),Q.hasOwnProperty(r)?o.setAttributeNS(Q[r],s,n):o.setAttribute(s,n);return o},input:function(e){var t=document.createElement("input");return null!=e&&(t.type=e),t},range:function(e,t,n){1===arguments.length&&(t=e,e=null);var r=document.createElement("input");return r.min=e=null==e?0:+e,r.max=t=null==t?1:+t,r.step=null==n?"any":n=+n,r.type="range",r},select:function(e){var t=document.createElement("select");return Array.prototype.forEach.call(e,function(e){var n=document.createElement("option");n.value=n.textContent=e,t.appendChild(n)}),t},svg:function(e,t){var n=document.createElementNS("http://www.w3.org/2000/svg","svg");return n.setAttribute("viewBox",[0,0,e,t]),n.setAttribute("width",e),n.setAttribute("height",t),n},text:function(e){return document.createTextNode(e)},uid:function(e){return new ee("O-"+(null==e?"":e+"-")+ ++Z)}};var ne={buffer:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsArrayBuffer(e)})},text:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsText(e)})},url:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsDataURL(e)})}};function re(){return this}function ie(e,t){let n=!1;return{[Symbol.iterator]:re,next:()=>n?{done:!0}:(n=!0,{done:!1,value:e}),return:()=>(n=!0,t(e),{done:!0}),throw:()=>({done:n=!0})}}function oe(e){let t,n,r=!1;const i=e(function(e){n?(n(e),n=null):r=!0;return t=e});return{[Symbol.iterator]:re,throw:()=>({done:!0}),return:()=>(null!=i&&i(),{done:!0}),next:function(){return{done:!1,value:r?(r=!1,Promise.resolve(t)):new Promise(e=>n=e)}}}}function se(e){switch(e.type){case"range":case"number":return e.valueAsNumber;case"date":return e.valueAsDate;case"checkbox":return e.checked;case"file":return e.multiple?e.files:e.files[0];default:return e.value}}var ae={disposable:ie,filter:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)t(n.value,++r)&&(yield n.value)},input:function(e){return oe(function(t){var n=function(e){switch(e.type){case"button":case"submit":case"checkbox":return"click";case"file":return"change";default:return"input"}}(e),r=se(e);function i(){t(se(e))}return e.addEventListener(n,i),void 0!==r&&t(r),function(){e.removeEventListener(n,i)}})},map:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)yield t(n.value,++r)},observe:oe,queue:function(e){let t;const n=[],r=e(function(e){return n.push(e),t&&(t(n.shift()),t=null),e});return{[Symbol.iterator]:re,throw:()=>({done:!0}),return:()=>(null!=r&&r(),{done:!0}),next:function(){return{done:!1,value:n.length?Promise.resolve(n.shift()):new Promise(e=>t=e)}}}},range:function*(e,t,n){e=+e,t=+t,n=(i=arguments.length)<2?(t=e,e=0,1):i<3?1:+n;for(var r=-1,i=0|Math.max(0,Math.ceil((t-e)/n));++r<i;)yield e+r*n},valueAt:function(e,t){if(!(!isFinite(t=+t)||t<0||t!=t|0))for(var n,r=-1;!(n=e.next()).done;)if(++r===t)return n.value},worker:function(e){const t=URL.createObjectURL(new Blob([e],{type:"text/javascript"})),n=new Worker(t);return ie(n,()=>{n.terminate(),URL.revokeObjectURL(t)})}};function le(e,t){return function(n){var r,i,o,s,a,l,u,c,d=n[0],h=[],p=null,f=-1;for(a=1,l=arguments.length;a<l;++a){if((r=arguments[a])instanceof Node)h[++f]=r,d+="\x3c!--o:"+f+"--\x3e";else if(Array.isArray(r)){for(u=0,c=r.length;u<c;++u)(i=r[u])instanceof Node?(null===p&&(h[++f]=p=document.createDocumentFragment(),d+="\x3c!--o:"+f+"--\x3e"),p.appendChild(i)):(p=null,d+=i);p=null}else d+=r;d+=n[a]}if(p=e(d),++f>0){for(o=new Array(f),s=document.createTreeWalker(p,NodeFilter.SHOW_COMMENT,null,!1);s.nextNode();)i=s.currentNode,/^o:/.test(i.nodeValue)&&(o[+i.nodeValue.slice(2)]=i);for(a=0;a<f;++a)(i=o[a])&&i.parentNode.replaceChild(h[a],i)}return 1===p.childNodes.length?p.removeChild(p.firstChild):11===p.nodeType?((i=t()).appendChild(p),i):p}}var ue=le(function(e){var t=document.createElement("template");return t.innerHTML=e.trim(),document.importNode(t.content,!0)},function(){return document.createElement("span")}),ce={newline:/^\n+/,code:/^( {4}[^\n]+\n*)+/,fences:ye,hr:/^( *[-*_]){3,} *(?:\n+|$)/,heading:/^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,nptable:ye,lheading:/^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,blockquote:/^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,list:/^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,html:/^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,def:/^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,table:ye,paragraph:/^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,text:/^[^\n]+/};function de(e){this.tokens=[],this.tokens.links={},this.options=e||ke.defaults,this.rules=ce.normal,this.options.gfm&&(this.options.tables?this.rules=ce.tables:this.rules=ce.gfm)}ce.bullet=/(?:[*+-]|\d+\.)/,ce.item=/^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/,ce.item=be(ce.item,"gm")(/bull/g,ce.bullet)(),ce.list=be(ce.list)(/bull/g,ce.bullet)("hr","\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))")("def","\\n+(?="+ce.def.source+")")(),ce.blockquote=be(ce.blockquote)("def",ce.def)(),ce._tag="(?!(?:a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b",ce.html=be(ce.html)("comment",/<!--[\s\S]*?-->/)("closed",/<(tag)[\s\S]+?<\/\1>/)("closing",/<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)(/tag/g,ce._tag)(),ce.paragraph=be(ce.paragraph)("hr",ce.hr)("heading",ce.heading)("lheading",ce.lheading)("blockquote",ce.blockquote)("tag","<"+ce._tag)("def",ce.def)(),ce.normal=xe({},ce),ce.gfm=xe({},ce.normal,{fences:/^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,paragraph:/^/,heading:/^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/}),ce.gfm.paragraph=be(ce.paragraph)("(?!","(?!"+ce.gfm.fences.source.replace("\\1","\\2")+"|"+ce.list.source.replace("\\1","\\3")+"|")(),ce.tables=xe({},ce.gfm,{nptable:/^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,table:/^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/}),de.rules=ce,de.lex=function(e,t){return new de(t).lex(e)},de.prototype.lex=function(e){return e=e.replace(/\r\n|\r/g,"\n").replace(/\t/g," ").replace(/\u00a0/g," ").replace(/\u2424/g,"\n"),this.token(e,!0)},de.prototype.token=function(e,t,n){var r,i,o,s,a,l,u,c,d;for(e=e.replace(/^ +$/gm,"");e;)if((o=this.rules.newline.exec(e))&&(e=e.substring(o[0].length),o[0].length>1&&this.tokens.push({type:"space"})),o=this.rules.code.exec(e))e=e.substring(o[0].length),o=o[0].replace(/^ {4}/gm,""),this.tokens.push({type:"code",text:this.options.pedantic?o:o.replace(/\n+$/,"")});else if(o=this.rules.fences.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"code",lang:o[2],text:o[3]||""});else if(o=this.rules.heading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:o[1].length,text:o[2]});else if(t&&(o=this.rules.nptable.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].split(/ *\| */);this.tokens.push(l)}else if(o=this.rules.lheading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:"="===o[2]?1:2,text:o[1]});else if(o=this.rules.hr.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"hr"});else if(o=this.rules.blockquote.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"blockquote_start"}),o=o[0].replace(/^ *> ?/gm,""),this.token(o,t,!0),this.tokens.push({type:"blockquote_end"});else if(o=this.rules.list.exec(e)){for(e=e.substring(o[0].length),s=o[2],this.tokens.push({type:"list_start",ordered:s.length>1}),r=!1,d=(o=o[0].match(this.rules.item)).length,c=0;c<d;c++)u=(l=o[c]).length,~(l=l.replace(/^ *([*+-]|\d+\.) +/,"")).indexOf("\n ")&&(u-=l.length,l=this.options.pedantic?l.replace(/^ {1,4}/gm,""):l.replace(new RegExp("^ {1,"+u+"}","gm"),"")),this.options.smartLists&&c!==d-1&&(s===(a=ce.bullet.exec(o[c+1])[0])||s.length>1&&a.length>1||(e=o.slice(c+1).join("\n")+e,c=d-1)),i=r||/\n\n(?!\s*$)/.test(l),c!==d-1&&(r="\n"===l.charAt(l.length-1),i||(i=r)),this.tokens.push({type:i?"loose_item_start":"list_item_start"}),this.token(l,!1,n),this.tokens.push({type:"list_item_end"});this.tokens.push({type:"list_end"})}else if(o=this.rules.html.exec(e))e=e.substring(o[0].length),this.tokens.push({type:this.options.sanitize?"paragraph":"html",pre:!this.options.sanitizer&&("pre"===o[1]||"script"===o[1]||"style"===o[1]),text:o[0]});else if(!n&&t&&(o=this.rules.def.exec(e)))e=e.substring(o[0].length),this.tokens.links[o[1].toLowerCase()]={href:o[2],title:o[3]};else if(t&&(o=this.rules.table.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/(?: *\| *)?\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].replace(/^ *\| *| *\| *$/g,"").split(/ *\| */);this.tokens.push(l)}else if(t&&(o=this.rules.paragraph.exec(e)))e=e.substring(o[0].length),this.tokens.push({type:"paragraph",text:"\n"===o[1].charAt(o[1].length-1)?o[1].slice(0,-1):o[1]});else if(o=this.rules.text.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"text",text:o[0]});else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0));return this.tokens};var he={escape:/^\\([\\`*{}\[\]()#+\-.!_>])/,autolink:/^<([^ <>]+(@|:\/)[^ <>]+)>/,url:ye,tag:/^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^<'">])*?>/,link:/^!?\[(inside)\]\(href\)/,reflink:/^!?\[(inside)\]\s*\[([^\]]*)\]/,nolink:/^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,strong:/^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,em:/^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,code:/^(`+)([\s\S]*?[^`])\1(?!`)/,br:/^ {2,}\n(?!\s*$)/,del:ye,text:/^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/};function pe(e,t){if(this.options=t||ke.defaults,this.links=e,this.rules=he.normal,this.renderer=this.options.renderer||new fe,this.renderer.options=this.options,!this.links)throw new Error("Tokens array requires a `links` property.");this.options.gfm?this.options.breaks?this.rules=he.breaks:this.rules=he.gfm:this.options.pedantic&&(this.rules=he.pedantic)}function fe(e){this.options=e||{}}function me(e){this.tokens=[],this.token=null,this.options=e||ke.defaults,this.options.renderer=this.options.renderer||new fe,this.renderer=this.options.renderer,this.renderer.options=this.options}function ge(e,t){return e.replace(t?/&/g:/&(?!#?\w+;)/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#39;")}function be(e,t){return e=e.source,t=t||"",function n(r,i){return r?(i=(i=i.source||i).replace(/(^|[^\[])\^/g,"$1"),e=e.replace(r,i),n):new RegExp(e,t)}}function ve(e,t){return _e[" "+e]||(/^[^:]+:\/*[^\/]*$/.test(e)?_e[" "+e]=e+"/":_e[" "+e]=e.replace(/[^\/]*$/,"")),e=_e[" "+e],"//"===t.slice(0,2)?e.replace(/:[\s\S]*/,":")+t:"/"===t.charAt(0)?e.replace(/(:\/*[^\/]*)[\s\S]*/,"$1")+t:e+t}he._inside=/(?:\[[^\]]*\]|\\[\[\]]|[^\[\]]|\](?=[^\[]*\]))*/,he._href=/\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/,he.link=be(he.link)("inside",he._inside)("href",he._href)(),he.reflink=be(he.reflink)("inside",he._inside)(),he.normal=xe({},he),he.pedantic=xe({},he.normal,{strong:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,em:/^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/}),he.gfm=xe({},he.normal,{escape:be(he.escape)("])","~|])")(),url:/^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,del:/^~~(?=\S)([\s\S]*?\S)~~/,text:be(he.text)("]|","~]|")("|","|https?://|")()}),he.breaks=xe({},he.gfm,{br:be(he.br)("{2,}","*")(),text:be(he.gfm.text)("{2,}","*")()}),pe.rules=he,pe.output=function(e,t,n){return new pe(t,n).output(e)},pe.prototype.output=function(e){for(var t,n,r,i,o="";e;)if(i=this.rules.escape.exec(e))e=e.substring(i[0].length),o+=i[1];else if(i=this.rules.autolink.exec(e))e=e.substring(i[0].length),"@"===i[2]?(n=ge(":"===i[1].charAt(6)?this.mangle(i[1].substring(7)):this.mangle(i[1])),r=this.mangle("mailto:")+n):r=n=ge(i[1]),o+=this.renderer.link(r,null,n);else if(this.inLink||!(i=this.rules.url.exec(e))){if(i=this.rules.tag.exec(e))!this.inLink&&/^<a /i.test(i[0])?this.inLink=!0:this.inLink&&/^<\/a>/i.test(i[0])&&(this.inLink=!1),e=e.substring(i[0].length),o+=this.options.sanitize?this.options.sanitizer?this.options.sanitizer(i[0]):ge(i[0]):i[0];else if(i=this.rules.link.exec(e))e=e.substring(i[0].length),this.inLink=!0,o+=this.outputLink(i,{href:i[2],title:i[3]}),this.inLink=!1;else if((i=this.rules.reflink.exec(e))||(i=this.rules.nolink.exec(e))){if(e=e.substring(i[0].length),t=(i[2]||i[1]).replace(/\s+/g," "),!(t=this.links[t.toLowerCase()])||!t.href){o+=i[0].charAt(0),e=i[0].substring(1)+e;continue}this.inLink=!0,o+=this.outputLink(i,t),this.inLink=!1}else if(i=this.rules.strong.exec(e))e=e.substring(i[0].length),o+=this.renderer.strong(this.output(i[2]||i[1]));else if(i=this.rules.em.exec(e))e=e.substring(i[0].length),o+=this.renderer.em(this.output(i[2]||i[1]));else if(i=this.rules.code.exec(e))e=e.substring(i[0].length),o+=this.renderer.codespan(ge(i[2].trim(),!0));else if(i=this.rules.br.exec(e))e=e.substring(i[0].length),o+=this.renderer.br();else if(i=this.rules.del.exec(e))e=e.substring(i[0].length),o+=this.renderer.del(this.output(i[1]));else if(i=this.rules.text.exec(e))e=e.substring(i[0].length),o+=this.renderer.text(ge(this.smartypants(i[0])));else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0))}else e=e.substring(i[0].length),r=n=ge(i[1]),o+=this.renderer.link(r,null,n);return o},pe.prototype.outputLink=function(e,t){var n=ge(t.href),r=t.title?ge(t.title):null;return"!"!==e[0].charAt(0)?this.renderer.link(n,r,this.output(e[1])):this.renderer.image(n,r,ge(e[1]))},pe.prototype.smartypants=function(e){return this.options.smartypants?e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014\/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014\/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…"):e},pe.prototype.mangle=function(e){if(!this.options.mangle)return e;for(var t,n="",r=e.length,i=0;i<r;i++)t=e.charCodeAt(i),Math.random()>.5&&(t="x"+t.toString(16)),n+="&#"+t+";";return n},fe.prototype.code=function(e,t,n){if(this.options.highlight){var r=this.options.highlight(e,t);null!=r&&r!==e&&(n=!0,e=r)}return t?'<pre><code class="'+this.options.langPrefix+ge(t,!0)+'">'+(n?e:ge(e,!0))+"\n</code></pre>\n":"<pre><code>"+(n?e:ge(e,!0))+"\n</code></pre>"},fe.prototype.blockquote=function(e){return"<blockquote>\n"+e+"</blockquote>\n"},fe.prototype.html=function(e){return e},fe.prototype.heading=function(e,t,n){return"<h"+t+' id="'+this.options.headerPrefix+n.toLowerCase().replace(/[^\w]+/g,"-")+'">'+e+"</h"+t+">\n"},fe.prototype.hr=function(){return this.options.xhtml?"<hr/>\n":"<hr>\n"},fe.prototype.list=function(e,t){var n=t?"ol":"ul";return"<"+n+">\n"+e+"</"+n+">\n"},fe.prototype.listitem=function(e){return"<li>"+e+"</li>\n"},fe.prototype.paragraph=function(e){return"<p>"+e+"</p>\n"},fe.prototype.table=function(e,t){return"<table>\n<thead>\n"+e+"</thead>\n<tbody>\n"+t+"</tbody>\n</table>\n"},fe.prototype.tablerow=function(e){return"<tr>\n"+e+"</tr>\n"},fe.prototype.tablecell=function(e,t){var n=t.header?"th":"td";return(t.align?"<"+n+' style="text-align:'+t.align+'">':"<"+n+">")+e+"</"+n+">\n"},fe.prototype.strong=function(e){return"<strong>"+e+"</strong>"},fe.prototype.em=function(e){return"<em>"+e+"</em>"},fe.prototype.codespan=function(e){return"<code>"+e+"</code>"},fe.prototype.br=function(){return this.options.xhtml?"<br/>":"<br>"},fe.prototype.del=function(e){return"<del>"+e+"</del>"},fe.prototype.link=function(e,t,n){if(this.options.sanitize){try{var r=decodeURIComponent((i=e,i.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/gi,function(e,t){return"colon"===(t=t.toLowerCase())?":":"#"===t.charAt(0)?"x"===t.charAt(1)?String.fromCharCode(parseInt(t.substring(2),16)):String.fromCharCode(+t.substring(1)):""}))).replace(/[^\w:]/g,"").toLowerCase()}catch(e){return n}if(0===r.indexOf("javascript:")||0===r.indexOf("vbscript:")||0===r.indexOf("data:"))return n}var i;this.options.baseUrl&&!we.test(e)&&(e=ve(this.options.baseUrl,e));var o='<a href="'+e+'"';return t&&(o+=' title="'+t+'"'),o+=">"+n+"</a>"},fe.prototype.image=function(e,t,n){this.options.baseUrl&&!we.test(e)&&(e=ve(this.options.baseUrl,e));var r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">"},fe.prototype.text=function(e){return e},me.parse=function(e,t,n){return new me(t,n).parse(e)},me.prototype.parse=function(e){this.inline=new pe(e.links,this.options,this.renderer),this.tokens=e.reverse();for(var t="";this.next();)t+=this.tok();return t},me.prototype.next=function(){return this.token=this.tokens.pop()},me.prototype.peek=function(){return this.tokens[this.tokens.length-1]||0},me.prototype.parseText=function(){for(var e=this.token.text;"text"===this.peek().type;)e+="\n"+this.next().text;return this.inline.output(e)},me.prototype.tok=function(){switch(this.token.type){case"space":return"";case"hr":return this.renderer.hr();case"heading":return this.renderer.heading(this.inline.output(this.token.text),this.token.depth,this.token.text);case"code":return this.renderer.code(this.token.text,this.token.lang,this.token.escaped);case"table":var e,t,n,r,i="",o="";for(n="",e=0;e<this.token.header.length;e++)({header:!0,align:this.token.align[e]}),n+=this.renderer.tablecell(this.inline.output(this.token.header[e]),{header:!0,align:this.token.align[e]});for(i+=this.renderer.tablerow(n),e=0;e<this.token.cells.length;e++){for(t=this.token.cells[e],n="",r=0;r<t.length;r++)n+=this.renderer.tablecell(this.inline.output(t[r]),{header:!1,align:this.token.align[r]});o+=this.renderer.tablerow(n)}return this.renderer.table(i,o);case"blockquote_start":for(o="";"blockquote_end"!==this.next().type;)o+=this.tok();return this.renderer.blockquote(o);case"list_start":o="";for(var s=this.token.ordered;"list_end"!==this.next().type;)o+=this.tok();return this.renderer.list(o,s);case"list_item_start":for(o="";"list_item_end"!==this.next().type;)o+="text"===this.token.type?this.parseText():this.tok();return this.renderer.listitem(o);case"loose_item_start":for(o="";"list_item_end"!==this.next().type;)o+=this.tok();return this.renderer.listitem(o);case"html":var a=this.token.pre||this.options.pedantic?this.token.text:this.inline.output(this.token.text);return this.renderer.html(a);case"paragraph":return this.renderer.paragraph(this.inline.output(this.token.text));case"text":return this.renderer.paragraph(this.parseText())}};var _e={},we=/^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;function ye(){}function xe(e){for(var t,n,r=1;r<arguments.length;r++)for(n in t=arguments[r])Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n]);return e}function ke(e,t,n){if(n||"function"==typeof t){n||(n=t,t=null);var r,i,o=(t=xe({},ke.defaults,t||{})).highlight,s=0;try{r=de.lex(e,t)}catch(e){return n(e)}i=r.length;var a=function(e){if(e)return t.highlight=o,n(e);var i;try{i=me.parse(r,t)}catch(t){e=t}return t.highlight=o,e?n(e):n(null,i)};if(!o||o.length<3)return a();if(delete t.highlight,!i)return a();for(;s<r.length;s++)!function(e){"code"!==e.type?--i||a():o(e.text,e.lang,function(t,n){return t?a(t):null==n||n===e.text?--i||a():(e.text=n,e.escaped=!0,void(--i||a()))})}(r[s])}else try{return t&&(t=xe({},ke.defaults,t)),me.parse(de.lex(e,t),t)}catch(e){if(e.message+="\nPlease report this to https://github.com/chjj/marked.",(t||ke.defaults).silent)return"<p>An error occurred:</p><pre>"+ge(e.message+"",!0)+"</pre>";throw e}}ye.exec=ye,ke.options=ke.setOptions=function(e){return xe(ke.defaults,e),ke},ke.defaults={gfm:!0,tables:!0,breaks:!1,pedantic:!1,sanitize:!1,sanitizer:null,mangle:!0,smartLists:!1,silent:!1,highlight:null,langPrefix:"lang-",smartypants:!1,headerPrefix:"",renderer:new fe,xhtml:!1,baseUrl:null},ke.Parser=me,ke.parser=me.parse,ke.Renderer=fe,ke.Lexer=de,ke.lexer=de.lex,ke.InlineLexer=pe,ke.inlineLexer=pe.output,ke.parse=ke;const Ce="https://cdn.jsdelivr.net/npm/@observablehq/highlight.js@2.0.0/";function Ee(e){return function(){return le(function(t){var n=document.createElement("div");n.innerHTML=ke(t,{langPrefix:""}).trim();var r=n.querySelectorAll("pre code[class]");return r.length>0&&e(Ce+"highlight.min.js").then(function(t){r.forEach(function(n){function r(){t.highlightBlock(n),n.parentNode.classList.add("observablehq--md-pre")}t.getLanguage(n.className)?r():e(Ce+"async-languages/index.js").then(r=>{if(r.has(n.className))return e(Ce+"async-languages/"+r.get(n.className)).then(e=>{t.registerLanguage(n.className,e)})}).then(r,r)})}),n},function(){return document.createElement("div")})}}function Se(e){let t;Object.defineProperties(this,{generator:{value:oe(e=>void(t=e))},value:{get:()=>e,set:n=>t(e=n)}}),void 0!==e&&t(e)}function*$e(){for(;;)yield Date.now()}var Ne=new Map;function qe(e,t){var n;return(n=Ne.get(e=+e))?n.then(K(t)):(n=Date.now())>=e?Promise.resolve(t):function(e,t){var n=new Promise(function(n){Ne.delete(t);var r=t-e;if(!(r>0))throw new Error("invalid time");if(r>2147483647)throw new Error("too long to wait");setTimeout(n,r)});return Ne.set(t,n),n}(n,e).then(K(t))}var Le={delay:function(e,t){return new Promise(function(n){setTimeout(function(){n(t)},e)})},tick:function(e,t){return qe(Math.ceil((Date.now()+1)/e)*e,t)},when:qe};function Pe(e,t){if(/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new Error("illegal name");return"https://unpkg.com/"+e}const je=new Map,Ae=[],Oe=Ae.map,Te=Ae.some,Me=Ae.hasOwnProperty,Ue="https://cdn.jsdelivr.net/npm/",Re=/^((?:@[^\/@]+\/)?[^\/@]+)(?:@([^\/]+))?(?:\/(.*))?$/,ze=/^\d+\.\d+\.\d+(-[\w-.+]+)?$/,Fe=/\.[^\/]*$/,De=["unpkg","jsdelivr","browser","main"];class RequireError extends Error{constructor(e){super(e)}}function Ie(e){const t=Re.exec(e);return t&&{name:t[1],version:t[2],path:t[3]}}function He(e){const t=`${Ue}${e.name}${e.version?`@${e.version}`:""}/package.json`;let n=je.get(t);return n||je.set(t,n=fetch(t).then(e=>{if(!e.ok)throw new RequireError("unable to load package.json");return e.redirected&&!je.has(e.url)&&je.set(e.url,n),e.json()})),n}RequireError.prototype.name=RequireError.name;const We=Be(async function(e,t){if(e.startsWith(Ue)&&(e=e.substring(Ue.length)),/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new RequireError("illegal name");const n=Ie(e);if(!n)return`${Ue}${e}`;if(!n.version&&null!=t&&t.startsWith(Ue)){const e=await He(Ie(t.substring(Ue.length)));n.version=e.dependencies&&e.dependencies[n.name]||e.peerDependencies&&e.peerDependencies[n.name]}if(n.path&&!Fe.test(n.path)&&(n.path+=".js"),n.path&&n.version&&ze.test(n.version))return`${Ue}${n.name}@${n.version}/${n.path}`;const r=await He(n);return`${Ue}${r.name}@${r.version}/${n.path||function(e){for(const t of De){const n=e[t];if("string"==typeof n)return Fe.test(n)?n:`${n}.js`}}(r)||"index.js"}`});function Be(e){const t=new Map,n=i(null);function r(e){if("string"!=typeof e)return e;let n=t.get(e);return n||t.set(e,n=new Promise((t,n)=>{const r=document.createElement("script");r.onload=(()=>{try{t(Ae.pop()(i(e)))}catch(e){n(new RequireError("invalid module"))}r.remove()}),r.onerror=(()=>{n(new RequireError("unable to load module")),r.remove()}),r.async=!0,r.src=e,window.define=Ye,document.head.appendChild(r)})),n}function i(t){return n=>Promise.resolve(e(n,t)).then(r)}function o(e){return arguments.length>1?Promise.all(Oe.call(arguments,n)).then(Ve):n(e)}return o.alias=function(t){return Be((n,r)=>n in t&&(r=null,"string"!=typeof(n=t[n]))?n:e(n,r))},o.resolve=e,o}function Ve(e){const t={};for(const n of e)for(const e in n)Me.call(n,e)&&(null==n[e]?Object.defineProperty(t,e,{get:Ge(n,e)}):t[e]=n[e]);return t}function Ge(e,t){return()=>e[t]}function Je(e){return e+""=="exports"}function Ye(e,t,n){const r=arguments.length;r<2?(n=e,t=[]):r<3&&(n=t,t="string"==typeof e?[]:e),Ae.push(Te.call(t,Je)?e=>{const r={};return Promise.all(Oe.call(t,t=>Je(t+="")?r:e(t))).then(e=>(n.apply(null,e),r))}:e=>Promise.all(Oe.call(t,e)).then(e=>"function"==typeof n?n.apply(null,e):n))}function Xe(e){return null==e?We:Be(e)}Ye.amd={};var Ke=le(function(e){var t=document.createElementNS("http://www.w3.org/2000/svg","g");return t.innerHTML=e.trim(),t},function(){return document.createElementNS("http://www.w3.org/2000/svg","g")}),Qe=String.raw;function Ze(e){return new Promise(function(t,n){var r=document.createElement("link");r.rel="stylesheet",r.href=e,r.onerror=n,r.onload=t,document.head.appendChild(r)})}function et(e){return function(){return Promise.all([e("@observablehq/katex@0.10.1/dist/katex.min.js"),e.resolve("@observablehq/katex@0.10.1/dist/katex.min.css").then(Ze)]).then(function(e){var t=e[0],n=r();function r(e){return function(){var n=document.createElement("div");return t.render(Qe.apply(String,arguments),n,e),n.removeChild(n.firstChild)}}return n.options=r,n.block=r({displayMode:!0}),n})}}function tt(){return oe(function(e){var t=e(document.body.clientWidth);function n(){var n=document.body.clientWidth;n!==t&&e(t=n)}return window.addEventListener("resize",n),function(){window.removeEventListener("resize",n)}})}function nt(e){const t=Xe(e);Object.defineProperties(this,{DOM:{value:te,writable:!0,enumerable:!0},Files:{value:ne,writable:!0,enumerable:!0},Generators:{value:ae,writable:!0,enumerable:!0},html:{value:K(ue),writable:!0,enumerable:!0},md:{value:Ee(t),writable:!0,enumerable:!0},Mutable:{value:K(Se),writable:!0,enumerable:!0},now:{value:$e,writable:!0,enumerable:!0},Promises:{value:Le,writable:!0,enumerable:!0},require:{value:K(t),writable:!0,enumerable:!0},resolve:{value:K(Pe),writable:!0,enumerable:!0},svg:{value:K(Ke),writable:!0,enumerable:!0},tex:{value:et(t),writable:!0,enumerable:!0},width:{value:tt,writable:!0,enumerable:!0}})}function rt(e,t){this.message=e+"",this.input=t}rt.prototype=Object.create(Error.prototype),rt.prototype.name="RuntimeError",rt.prototype.constructor=rt;var it=Array.prototype,ot=it.map,st=it.forEach;function at(e){return function(){return e}}function lt(e){return e}function ut(){}var ct=1,dt=2,ht=3,pt={};function ft(e,t,n){var r;null==n&&(n=pt),Object.defineProperties(this,{_observer:{value:n,writable:!0},_definition:{value:bt,writable:!0},_duplicate:{value:void 0,writable:!0},_duplicates:{value:void 0,writable:!0},_indegree:{value:-1,writable:!0},_inputs:{value:[],writable:!0},_invalidate:{value:ut,writable:!0},_module:{value:t},_name:{value:null,writable:!0},_outputs:{value:new Set,writable:!0},_promise:{value:Promise.resolve(void 0),writable:!0},_reachable:{value:n!==pt,writable:!0},_rejector:{value:(r=this,function(e){if(e===bt)throw new rt(r._name+" is not defined",r._name);throw new rt(r._name+" could not be resolved",r._name)})},_type:{value:e},_value:{value:void 0,writable:!0},_version:{value:0,writable:!0}})}function mt(e){e._module._runtime._dirty.add(e),e._outputs.add(this)}function gt(e){e._module._runtime._dirty.add(e),e._outputs.delete(this)}function bt(){throw bt}function vt(e){return function(){throw new rt(e+" is defined more than once")}}function _t(e,t,n){var r=this._module._scope,i=this._module._runtime;if(this._inputs.forEach(gt,this),t.forEach(mt,this),this._inputs=t,this._definition=n,this._value=void 0,n===ut?i._variables.delete(this):i._variables.add(this),e==this._name&&r.get(e)===this)this._outputs.forEach(i._updates.add,i._updates);else{var o,s;if(this._name)if(this._outputs.size)r.delete(this._name),(s=this._module._resolve(this._name))._outputs=this._outputs,this._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(this)]=s},this),s._outputs.forEach(i._updates.add,i._updates),i._dirty.add(s).add(this),r.set(this._name,s);else if((s=r.get(this._name))===this)r.delete(this._name);else{if(s._type!==ht)throw new Error;s._duplicates.delete(this),this._duplicate=void 0,1===s._duplicates.size&&(s=s._duplicates.keys().next().value,o=r.get(this._name),s._outputs=o._outputs,o._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(o)]=s}),s._definition=s._duplicate,s._duplicate=void 0,i._dirty.add(o).add(s),i._updates.add(s),r.set(this._name,s))}if(this._outputs.size)throw new Error;e&&((s=r.get(e))?s._type===ht?(this._definition=vt(e),this._duplicate=n,s._duplicates.add(this)):s._type===dt?(this._outputs=s._outputs,s._outputs=new Set,this._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=this},this),i._dirty.add(s).add(this),r.set(e,this)):(s._duplicate=s._definition,this._duplicate=n,(o=new ft(ht,this._module))._name=e,o._definition=this._definition=s._definition=vt(e),o._outputs=s._outputs,s._outputs=new Set,o._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=o}),o._duplicates=new Set([this,s]),i._dirty.add(s).add(o),i._updates.add(s).add(o),r.set(e,o)):r.set(e,this)),this._name=e}return i._updates.add(this),i._compute(),this}Object.defineProperties(ft.prototype,{_pending:{value:function(){this._observer.pending&&this._observer.pending()},writable:!0,configurable:!0},_fulfilled:{value:function(e){this._observer.fulfilled&&this._observer.fulfilled(e,this._name)},writable:!0,configurable:!0},_rejected:{value:function(e){this._observer.rejected&&this._observer.rejected(e,this._name)},writable:!0,configurable:!0},define:{value:function(e,t,n){switch(arguments.length){case 1:n=e,e=t=null;break;case 2:n=t,"string"==typeof e?t=null:(t=e,e=null)}return _t.call(this,null==e?null:e+"",null==t?[]:ot.call(t,this._module._resolve,this._module),"function"==typeof n?n:at(n))},writable:!0,configurable:!0},delete:{value:function(){return _t.call(this,null,[],ut)},writable:!0,configurable:!0},import:{value:function(e,t,n){arguments.length<3&&(n=t,t=e);return _t.call(this,t+"",[n._resolve(e+"")],lt)},writable:!0,configurable:!0}});var wt=new Map;function yt(e){Object.defineProperties(this,{_runtime:{value:e},_scope:{value:new Map}})}function xt(e){return e._name}Object.defineProperties(yt.prototype,{_copy:{value:function(e,t,n){var r=new yt(this._runtime);return n.set(this,r),this._scope.forEach(function(i,o){var s,a=new ft(i._type,r);if(s=e.get(o))a.import(s.name,s.alias,t);else if(i._definition===lt){var l=i._inputs[0],u=l._module,c=n.get(u)||u._copy(wt,null,n);a.import(l._name,o,c)}else a.define(o,i._inputs.map(xt),i._definition)}),r},writable:!0,configurable:!0},_resolve:{value:function(e){var t,n=this._scope.get(e);if(!n)if(n=new ft(dt,this),this._runtime._builtin._scope.has(e))n.import(e,this._runtime._builtin);else if("invalidation"===e)n.define(e,Ct);else if("visibility"===e)n.define(e,Et);else{try{t=this._runtime._global(e)}catch(t){return n.define(e,(r=t,function(){throw r}))}void 0===t?this._scope.set(n._name=e,n):n.define(e,at(t))}var r;return n},writable:!0,configurable:!0},redefine:{value:function(e){var t=this._scope.get(e);if(!t)throw new rt(e+" is not defined");if(t._type===ht)throw new rt(e+" is defined more than once");return t.define.apply(t,arguments)},writable:!0,configurable:!0},define:{value:function(){var e=new ft(ct,this);return e.define.apply(e,arguments)},writable:!0,configurable:!0},derive:{value:function(e,t){var n=new Map;return st.call(e,function(e){"object"!=typeof e&&(e={name:e+""}),null==e.alias&&(e.alias=e.name),n.set(e.alias,e)}),this._copy(n,t,new Map)},writable:!0,configurable:!0},import:{value:function(){var e=new ft(ct,this);return e.import.apply(e,arguments)},writable:!0,configurable:!0},value:{value:async function(e){var t=this._scope.get(e);if(!t)throw new rt(e+" is not defined");t._observer===pt&&(t._observer=!0,this._runtime._dirty.add(t));return await this._runtime._compute(),t._promise},writable:!0,configurable:!0},variable:{value:function(e){return new ft(ct,this,e)},writable:!0,configurable:!0}});const kt="function"==typeof requestAnimationFrame?requestAnimationFrame:setImmediate;var Ct={},Et={};function St(e=new nt,t=function(e){return window[e]}){var n=this.module();if(Object.defineProperties(this,{_dirty:{value:new Set},_updates:{value:new Set},_computing:{value:null,writable:!0},_modules:{value:new Map},_variables:{value:new Set},_disposed:{value:!1,writable:!0},_builtin:{value:n},_global:{value:t}}),e)for(var r in e)new ft(dt,n).define(r,[],e[r])}function $t(e){++e._indegree}function Nt(e){return e._promise.catch(e._rejector)}function qt(e){return new Promise(function(t){e._invalidate=t})}function Lt(e,t){let n,r,i="function"==typeof IntersectionObserver&&t._observer&&t._observer._node,o=!i,s=ut,a=ut;return i&&((r=new IntersectionObserver(([e])=>(o=e.isIntersecting)&&(n=null,s()))).observe(i),e.then(()=>(r.disconnect(),r=null,a()))),function(e){return o?Promise.resolve(e):r?(n||(n=new Promise((e,t)=>(s=e,a=t))),n.then(()=>e)):Promise.reject()}}function Pt(e){e._invalidate(),e._invalidate=ut,e._pending();var t=e._value,n=++e._version,r=null,i=e._promise=Promise.all(e._inputs.map(Nt)).then(function(i){if(e._version===n){for(var o=0,s=i.length;o<s;++o)switch(i[o]){case Ct:i[o]=r=qt(e);break;case Et:r||(r=qt(e)),i[o]=Lt(r,e)}return e._definition.apply(t,i)}}).then(function(t){return function(e){return e&&"function"==typeof e.next&&"function"==typeof e.return}(t)?((r||qt(e)).then((o=t,function(){o.return()})),function(e,t,n,r){function i(){var n=new Promise(function(e){e(r.next())}).then(function(r){return r.done?void 0:Promise.resolve(r.value).then(function(r){if(e._version===t)return jt(e,r,n).then(i),e._fulfilled(r),r})});n.catch(function(r){e._version===t&&(jt(e,void 0,n),e._rejected(r))})}return new Promise(function(e){e(r.next())}).then(function(e){if(!e.done)return n.then(i),e.value})}(e,n,i,t)):t;var o});i.then(function(t){e._version===n&&(e._value=t,e._fulfilled(t))},function(t){e._version===n&&(e._value=void 0,e._rejected(t))})}function jt(e,t,n){var r=e._module._runtime;return e._value=t,e._promise=n,e._outputs.forEach(r._updates.add,r._updates),r._compute()}Object.defineProperties(St,{load:{value:function(e,t,n){if("function"==typeof t&&(n=t,t=null),"function"!=typeof n)throw new Error("invalid observer");null==t&&(t=new nt);const{modules:r,id:i}=e,o=new Map,s=new St(t),a=l(i);function l(e){let t=o.get(e);return t||o.set(e,t=s.module()),t}for(const e of r){const t=l(e.id);let r=0;for(const i of e.variables)i.from?t.import(i.remote,i.name,l(i.from)):t===a?t.variable(n(i,r,e.variables)).define(i.name,i.inputs,i.value):t.define(i.name,i.inputs,i.value),++r}return s},writable:!0,configurable:!0}}),Object.defineProperties(St.prototype,{_compute:{value:function(){return this._computing||(this._computing=this._computeSoon())},writable:!0,configurable:!0},_computeSoon:{value:function(){var e=this;return new Promise(function(t){kt(function(){t(),e._disposed||e._computeNow()})})},writable:!0,configurable:!0},_computeNow:{value:function(){var e,t,n=[];(e=new Set(this._dirty)).forEach(function(t){t._inputs.forEach(e.add,e);const n=function(e){if(e._observer!==pt)return!0;var t=new Set(e._outputs);for(const e of t){if(e._observer!==pt)return!0;e._outputs.forEach(t.add,t)}return!1}(t);n>t._reachable?this._updates.add(t):n<t._reachable&&t._invalidate(),t._reachable=n},this),(e=new Set(this._updates)).forEach(function(t){t._reachable?(t._indegree=0,t._outputs.forEach(e.add,e)):(t._indegree=-1,e.delete(t))}),this._computing=null,this._updates.clear(),this._dirty.clear(),e.forEach(function(e){e._outputs.forEach($t)}),e.forEach(function(e){0===e._indegree&&n.push(e)});for(;t=n.pop();)Pt(t),t._outputs.forEach(r),e.delete(t);function r(e){0==--e._indegree&&n.push(e)}e.forEach(function(e){var t=new rt("circular definition");e._value=void 0,(e._promise=Promise.reject(t)).catch(ut),e._rejected(t)})},writable:!0,configurable:!0},dispose:{value:function(){this._computing=Promise.resolve(),this._disposed=!0,this._variables.forEach(e=>{e._invalidate(),e._version=NaN})},writable:!0,configurable:!0},module:{value:function(e,t=ut){if(void 0===e)return new yt(this);let n=this._modules.get(e);return n||(this._modules.set(e,n=e(this,t)),n)},writable:!0,configurable:!0}});export{X as Inspector,nt as Library,St as Runtime,rt as RuntimeError};
// @observablehq/runtime v4.2.1 Copyright 2019 Observable, Inc.
function e(e,t,n){n=n||{};var r=e.ownerDocument,i=r.defaultView.CustomEvent;"function"==typeof i?i=new i(t,{detail:n}):((i=r.createEvent("Event")).initEvent(t,!1,!1),i.detail=n),e.dispatchEvent(i)}function t(e){return Array.isArray(e)||e instanceof Int8Array||e instanceof Int16Array||e instanceof Int32Array||e instanceof Uint8Array||e instanceof Uint8ClampedArray||e instanceof Uint16Array||e instanceof Uint32Array||e instanceof Float32Array||e instanceof Float64Array}function n(e){return e===(0|e)+""}function r(e){const t=document.createElement("span");return t.className="observablehq--cellname",t.textContent=`${e} = `,t}const i=Symbol.prototype.toString;function o(e){return i.call(e)}const{getOwnPropertySymbols:s,prototype:{hasOwnProperty:a}}=Object,{toStringTag:l}=Symbol,u={},c=s;function d(e,t){return a.call(e,t)}function h(e){return e[l]||e.constructor&&e.constructor.name||"Object"}function p(e,t){try{const n=e[t];return n&&n.constructor,n}catch(e){return u}}function f(n,i,o){const s=t(n);let a,l,u;n instanceof Map?(a=`Map(${n.size})`,l=m):n instanceof Set?(a=`Set(${n.size})`,l=g):s?(a=`${n.constructor.name}(${n.length})`,l=b):(a=h(n),l=v);const c=document.createElement("span");c.className="observablehq--expanded",o&&c.appendChild(r(o));const d=c.appendChild(document.createElement("a"));d.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M4 7L0 1h8z' fill='currentColor' />\n </svg>",d.appendChild(document.createTextNode(`${a}${s?" [":" {"}`)),d.addEventListener("mouseup",function(e){e.stopPropagation(),J(c,k(n,null,o))}),l=l(n);for(let e=0;!(u=l.next()).done&&e<20;++e)c.appendChild(u.value);if(!u.done){const t=c.appendChild(document.createElement("a"));t.className="observablehq--field",t.style.display="block",t.appendChild(document.createTextNode(" … more")),t.addEventListener("mouseup",function(t){t.stopPropagation(),c.insertBefore(u.value,c.lastChild.previousSibling);for(let e=0;!(u=l.next()).done&&e<19;++e)c.insertBefore(u.value,c.lastChild.previousSibling);u.done&&c.removeChild(c.lastChild.previousSibling),e(c,"load")})}return c.appendChild(document.createTextNode(s?"]":"}")),c}function*m(e){for(const[t,n]of e)yield w(t,n);yield*v(e)}function*g(e){for(const t of e)yield y(t);yield*v(e)}function*b(e){for(let t=0,n=e.length;t<n;++t)t in e&&(yield _(t,p(e,t),"observablehq--index"));for(const t in e)!n(t)&&d(e,t)&&(yield _(t,p(e,t),"observablehq--key"));for(const t of c(e))yield _(o(t),p(e,t),"observablehq--symbol")}function*v(e){for(const t in e)d(e,t)&&(yield _(t,p(e,t),"observablehq--key"));for(const t of c(e))yield _(o(t),p(e,t),"observablehq--symbol")}function _(e,t,n){const r=document.createElement("div"),i=r.appendChild(document.createElement("span"));return r.className="observablehq--field",i.className=n,i.textContent=` ${e}`,r.appendChild(document.createTextNode(": ")),r.appendChild(G(t)),r}function w(e,t){const n=document.createElement("div");return n.className="observablehq--field",n.appendChild(document.createTextNode(" ")),n.appendChild(G(e)),n.appendChild(document.createTextNode(" => ")),n.appendChild(G(t)),n}function y(e){const t=document.createElement("div");return t.className="observablehq--field",t.appendChild(document.createTextNode(" ")),t.appendChild(G(e)),t}function x(e){const t=window.getSelection();return"Range"===t.type&&(t.containsNode(e,!0)||t.anchorNode.isSelfOrDescendant(e)||t.focusNode.isSelfOrDescendant(e))}function k(e,n,i){const o=t(e);let s,a,l;if(e instanceof Map?(s=`Map(${e.size})`,a=C):e instanceof Set?(s=`Set(${e.size})`,a=E):o?(s=`${e.constructor.name}(${e.length})`,a=S):(s=h(e),a=$),n){const t=document.createElement("span");return t.className="observablehq--shallow",i&&t.appendChild(r(i)),t.appendChild(document.createTextNode(s)),t.addEventListener("mouseup",function(n){x(t)||(n.stopPropagation(),J(t,k(e)))}),t}const u=document.createElement("span");u.className="observablehq--collapsed",i&&u.appendChild(r(i));const c=u.appendChild(document.createElement("a"));c.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M7 4L1 8V0z' fill='currentColor' />\n </svg>",c.appendChild(document.createTextNode(`${s}${o?" [":" {"}`)),u.addEventListener("mouseup",function(t){x(u)||(t.stopPropagation(),J(u,f(e,0,i)))},!0),a=a(e);for(let e=0;!(l=a.next()).done&&e<20;++e)e>0&&u.appendChild(document.createTextNode(", ")),u.appendChild(l.value);return l.done||u.appendChild(document.createTextNode(", …")),u.appendChild(document.createTextNode(o?"]":"}")),u}function*C(e){for(const[t,n]of e)yield L(t,n);yield*$(e)}function*E(e){for(const t of e)yield G(t,!0);yield*$(e)}function*S(e){let t=-1,r=0;for(const n=e.length;r<n;++r)r in e&&(r>t+1&&(yield N(r-t-1)),yield G(p(e,r),!0),t=r);r>t+1&&(yield N(r-t-1));for(const t in e)!n(t)&&d(e,t)&&(yield q(t,p(e,t),"observablehq--key"));for(const t of c(e))yield q(o(t),p(e,t),"observablehq--symbol")}function*$(e){for(const t in e)d(e,t)&&(yield q(t,p(e,t),"observablehq--key"));for(const t of c(e))yield q(o(t),p(e,t),"observablehq--symbol")}function N(e){const t=document.createElement("span");return t.className="observablehq--empty",t.textContent=1===e?"empty":`empty × ${e}`,t}function q(e,t,n){const r=document.createDocumentFragment(),i=r.appendChild(document.createElement("span"));return i.className=n,i.textContent=e,r.appendChild(document.createTextNode(": ")),r.appendChild(G(t,!0)),r}function L(e,t){const n=document.createDocumentFragment();return n.appendChild(G(e,!0)),n.appendChild(document.createTextNode(" => ")),n.appendChild(G(t,!0)),n}function P(e,t){var n=e+"",r=n.length;return r<t?new Array(t-r+1).join(0)+n:n}function j(e){return e<0?"-"+P(-e,6):e>9999?"+"+P(e,6):P(e,4)}var A=Error.prototype.toString;var O=RegExp.prototype.toString;const T=20;function M(e){return e.replace(/[\\`\x00-\x09\x0b-\x19]|\${/g,U)}function U(e){var t=e.charCodeAt(0);switch(t){case 8:return"\\b";case 9:return"\\t";case 11:return"\\v";case 12:return"\\f";case 13:return"\\r"}return t<16?"\\x0"+t.toString(16):t<32?"\\x"+t.toString(16):"\\"+e}function R(e,t){for(var n=0;t.exec(e);)++n;return n}var z=Function.prototype.toString,F={prefix:"async ƒ"},D={prefix:"async ƒ*"},I={prefix:"class"},H={prefix:"ƒ"},W={prefix:"ƒ*"};function B(e,t,n){var i=document.createElement("span");i.className="observablehq--function",n&&i.appendChild(r(n));var o=i.appendChild(document.createElement("span"));return o.className="observablehq--keyword",o.textContent=e.prefix,i.appendChild(document.createTextNode(t)),i}const{prototype:{toString:V}}=Object;function G(e,t,n,i){let s=typeof e;switch(s){case"boolean":case"undefined":e+="";break;case"number":e=0===e&&1/e<0?"-0":e+"";break;case"bigint":e+="n";break;case"symbol":e=o(e);break;case"function":return function(e,t){var n,r,i=z.call(e);switch(e.constructor&&e.constructor.name){case"AsyncFunction":n=F;break;case"AsyncGeneratorFunction":n=D;break;case"GeneratorFunction":n=W;break;default:n=/^class\b/.test(i)?I:H}return n===I?B(n,"",t):(r=/^(?:async\s*)?(\w+)\s*=>/.exec(i))?B(n,"("+r[1]+")",t):(r=/^(?:async\s*)?\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?B(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):(r=/^(?:async\s*)?function(?:\s*\*)?(?:\s*\w+)?\s*\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?B(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):B(n,"(…)",t)}(e,i);case"string":return function(e,t,n,i){if(!1===t){if(R(e,/["\n]/g)<=R(e,/`|\${/g)){const t=document.createElement("span");i&&t.appendChild(r(i));const n=t.appendChild(document.createElement("span"));return n.className="observablehq--string",n.textContent=JSON.stringify(e),t}const o=e.split("\n");if(o.length>T&&!n){const n=document.createElement("div");i&&n.appendChild(r(i));const s=n.appendChild(document.createElement("span"));s.className="observablehq--string",s.textContent="`"+M(o.slice(0,T).join("\n"));const a=n.appendChild(document.createElement("span")),l=o.length-T;return a.textContent=`Show ${l} truncated line${l>1?"s":""}`,a.className="observablehq--string-expand",a.addEventListener("mouseup",function(r){r.stopPropagation(),J(n,G(e,t,!0,i))}),n}const s=document.createElement("span");i&&s.appendChild(r(i));const a=s.appendChild(document.createElement("span"));return a.className=`observablehq--string${n?" observablehq--expanded":""}`,a.textContent="`"+M(e)+"`",s}const o=document.createElement("span");i&&o.appendChild(r(i));const s=o.appendChild(document.createElement("span"));return s.className="observablehq--string",s.textContent=JSON.stringify(e.length>100?`${e.slice(0,50)}…${e.slice(-49)}`:e),o}(e,t,n,i);default:if(null===e){s=null,e="null";break}if(e instanceof Date){s="date",a=e,e=isNaN(a)?"Invalid Date":function(e){return 0===e.getUTCMilliseconds()&&0===e.getUTCSeconds()&&0===e.getUTCMinutes()&&0===e.getUTCHours()}(a)?j(a.getUTCFullYear())+"-"+P(a.getUTCMonth()+1,2)+"-"+P(a.getUTCDate(),2):j(a.getFullYear())+"-"+P(a.getMonth()+1,2)+"-"+P(a.getDate(),2)+"T"+P(a.getHours(),2)+":"+P(a.getMinutes(),2)+(a.getMilliseconds()?":"+P(a.getSeconds(),2)+"."+P(a.getMilliseconds(),3):a.getSeconds()?":"+P(a.getSeconds(),2):"");break}if(e===u){s="forbidden",e="[forbidden]";break}switch(V.call(e)){case"[object RegExp]":s="regexp",e=function(e){return O.call(e)}(e);break;case"[object Error]":case"[object DOMException]":s="error",e=function(e){return e.stack||A.call(e)}(e);break;default:return(n?f:k)(e,t,i)}}var a;const l=document.createElement("span");i&&l.appendChild(r(i));const c=l.appendChild(document.createElement("span"));return c.className=`observablehq--${s}`,c.textContent=e,l}function J(t,n){t.classList.contains("observablehq--inspect")&&n.classList.add("observablehq--inspect"),t.parentNode.replaceChild(n,t),e(n,"load")}const Y=/\s+\(\d+:\d+\)$/m;class X{constructor(e){if(!e)throw new Error("invalid node");this._node=e,e.classList.add("observablehq")}pending(){const{_node:e}=this;e.classList.remove("observablehq--error"),e.classList.add("observablehq--running")}fulfilled(t,n){const{_node:r}=this;if((!(t instanceof Element||t instanceof Text)||t.parentNode&&t.parentNode!==r)&&(t=G(t,!1,r.firstChild&&r.firstChild.classList&&r.firstChild.classList.contains("observablehq--expanded"),n)).classList.add("observablehq--inspect"),r.classList.remove("observablehq--running","observablehq--error"),r.firstChild!==t)if(r.firstChild){for(;r.lastChild!==r.firstChild;)r.removeChild(r.lastChild);r.replaceChild(t,r.firstChild)}else r.appendChild(t);e(r,"update")}rejected(t,n){const{_node:i}=this;for(i.classList.remove("observablehq--running"),i.classList.add("observablehq--error");i.lastChild;)i.removeChild(i.lastChild);var o=document.createElement("div");o.className="observablehq--inspect",n&&o.appendChild(r(n)),o.appendChild(document.createTextNode((t+"").replace(Y,""))),i.appendChild(o),e(i,"error",{error:t})}}function K(e){return function(){return e}}X.into=function(e){if("string"==typeof e&&null==(e=document.querySelector(e)))throw new Error("container not found");return function(){return new X(e.appendChild(document.createElement("div")))}};var Q={math:"http://www.w3.org/1998/Math/MathML",svg:"http://www.w3.org/2000/svg",xhtml:"http://www.w3.org/1999/xhtml",xlink:"http://www.w3.org/1999/xlink",xml:"http://www.w3.org/XML/1998/namespace",xmlns:"http://www.w3.org/2000/xmlns/"};var Z=0;function ee(e){this.id=e,this.href=window.location.href+"#"+e}ee.prototype.toString=function(){return"url("+this.href+")"};var te={canvas:function(e,t){var n=document.createElement("canvas");return n.width=e,n.height=t,n},context2d:function(e,t,n){null==n&&(n=devicePixelRatio);var r=document.createElement("canvas");r.width=e*n,r.height=t*n,r.style.width=e+"px";var i=r.getContext("2d");return i.scale(n,n),i},download:function(e,t="untitled",n="Save"){const r=document.createElement("a"),i=r.appendChild(document.createElement("button"));async function o(){await new Promise(requestAnimationFrame),URL.revokeObjectURL(r.href),r.removeAttribute("href"),i.textContent=n,i.disabled=!1}return i.textContent=n,r.download=t,r.onclick=(async t=>{if(i.disabled=!0,r.href)return o();i.textContent="Saving…";try{const t=await("function"==typeof e?e():e);i.textContent="Download",r.href=URL.createObjectURL(t)}catch(e){i.textContent=n}if(t.eventPhase)return o();i.disabled=!1}),r},element:function(e,t){var n,r=e+="",i=r.indexOf(":");i>=0&&"xmlns"!==(r=e.slice(0,i))&&(e=e.slice(i+1));var o=Q.hasOwnProperty(r)?document.createElementNS(Q[r],e):document.createElement(e);if(t)for(var s in t)i=(r=s).indexOf(":"),n=t[s],i>=0&&"xmlns"!==(r=s.slice(0,i))&&(s=s.slice(i+1)),Q.hasOwnProperty(r)?o.setAttributeNS(Q[r],s,n):o.setAttribute(s,n);return o},input:function(e){var t=document.createElement("input");return null!=e&&(t.type=e),t},range:function(e,t,n){1===arguments.length&&(t=e,e=null);var r=document.createElement("input");return r.min=e=null==e?0:+e,r.max=t=null==t?1:+t,r.step=null==n?"any":n=+n,r.type="range",r},select:function(e){var t=document.createElement("select");return Array.prototype.forEach.call(e,function(e){var n=document.createElement("option");n.value=n.textContent=e,t.appendChild(n)}),t},svg:function(e,t){var n=document.createElementNS("http://www.w3.org/2000/svg","svg");return n.setAttribute("viewBox",[0,0,e,t]),n.setAttribute("width",e),n.setAttribute("height",t),n},text:function(e){return document.createTextNode(e)},uid:function(e){return new ee("O-"+(null==e?"":e+"-")+ ++Z)}};var ne={buffer:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsArrayBuffer(e)})},text:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsText(e)})},url:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsDataURL(e)})}};function re(){return this}function ie(e,t){let n=!1;return{[Symbol.iterator]:re,next:()=>n?{done:!0}:(n=!0,{done:!1,value:e}),return:()=>(n=!0,t(e),{done:!0}),throw:()=>({done:n=!0})}}function oe(e){let t,n,r=!1;const i=e(function(e){n?(n(e),n=null):r=!0;return t=e});return{[Symbol.iterator]:re,throw:()=>({done:!0}),return:()=>(null!=i&&i(),{done:!0}),next:function(){return{done:!1,value:r?(r=!1,Promise.resolve(t)):new Promise(e=>n=e)}}}}function se(e){switch(e.type){case"range":case"number":return e.valueAsNumber;case"date":return e.valueAsDate;case"checkbox":return e.checked;case"file":return e.multiple?e.files:e.files[0];default:return e.value}}var ae={disposable:ie,filter:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)t(n.value,++r)&&(yield n.value)},input:function(e){return oe(function(t){var n=function(e){switch(e.type){case"button":case"submit":case"checkbox":return"click";case"file":return"change";default:return"input"}}(e),r=se(e);function i(){t(se(e))}return e.addEventListener(n,i),void 0!==r&&t(r),function(){e.removeEventListener(n,i)}})},map:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)yield t(n.value,++r)},observe:oe,queue:function(e){let t;const n=[],r=e(function(e){return n.push(e),t&&(t(n.shift()),t=null),e});return{[Symbol.iterator]:re,throw:()=>({done:!0}),return:()=>(null!=r&&r(),{done:!0}),next:function(){return{done:!1,value:n.length?Promise.resolve(n.shift()):new Promise(e=>t=e)}}}},range:function*(e,t,n){e=+e,t=+t,n=(i=arguments.length)<2?(t=e,e=0,1):i<3?1:+n;for(var r=-1,i=0|Math.max(0,Math.ceil((t-e)/n));++r<i;)yield e+r*n},valueAt:function(e,t){if(!(!isFinite(t=+t)||t<0||t!=t|0))for(var n,r=-1;!(n=e.next()).done;)if(++r===t)return n.value},worker:function(e){const t=URL.createObjectURL(new Blob([e],{type:"text/javascript"})),n=new Worker(t);return ie(n,()=>{n.terminate(),URL.revokeObjectURL(t)})}};function le(e,t){return function(n){var r,i,o,s,a,l,u,c,d=n[0],h=[],p=null,f=-1;for(a=1,l=arguments.length;a<l;++a){if((r=arguments[a])instanceof Node)h[++f]=r,d+="\x3c!--o:"+f+"--\x3e";else if(Array.isArray(r)){for(u=0,c=r.length;u<c;++u)(i=r[u])instanceof Node?(null===p&&(h[++f]=p=document.createDocumentFragment(),d+="\x3c!--o:"+f+"--\x3e"),p.appendChild(i)):(p=null,d+=i);p=null}else d+=r;d+=n[a]}if(p=e(d),++f>0){for(o=new Array(f),s=document.createTreeWalker(p,NodeFilter.SHOW_COMMENT,null,!1);s.nextNode();)i=s.currentNode,/^o:/.test(i.nodeValue)&&(o[+i.nodeValue.slice(2)]=i);for(a=0;a<f;++a)(i=o[a])&&i.parentNode.replaceChild(h[a],i)}return 1===p.childNodes.length?p.removeChild(p.firstChild):11===p.nodeType?((i=t()).appendChild(p),i):p}}var ue=le(function(e){var t=document.createElement("template");return t.innerHTML=e.trim(),document.importNode(t.content,!0)},function(){return document.createElement("span")}),ce={newline:/^\n+/,code:/^( {4}[^\n]+\n*)+/,fences:ye,hr:/^( *[-*_]){3,} *(?:\n+|$)/,heading:/^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,nptable:ye,lheading:/^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,blockquote:/^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,list:/^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,html:/^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,def:/^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,table:ye,paragraph:/^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,text:/^[^\n]+/};function de(e){this.tokens=[],this.tokens.links={},this.options=e||ke.defaults,this.rules=ce.normal,this.options.gfm&&(this.options.tables?this.rules=ce.tables:this.rules=ce.gfm)}ce.bullet=/(?:[*+-]|\d+\.)/,ce.item=/^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/,ce.item=be(ce.item,"gm")(/bull/g,ce.bullet)(),ce.list=be(ce.list)(/bull/g,ce.bullet)("hr","\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))")("def","\\n+(?="+ce.def.source+")")(),ce.blockquote=be(ce.blockquote)("def",ce.def)(),ce._tag="(?!(?:a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b",ce.html=be(ce.html)("comment",/<!--[\s\S]*?-->/)("closed",/<(tag)[\s\S]+?<\/\1>/)("closing",/<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)(/tag/g,ce._tag)(),ce.paragraph=be(ce.paragraph)("hr",ce.hr)("heading",ce.heading)("lheading",ce.lheading)("blockquote",ce.blockquote)("tag","<"+ce._tag)("def",ce.def)(),ce.normal=xe({},ce),ce.gfm=xe({},ce.normal,{fences:/^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,paragraph:/^/,heading:/^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/}),ce.gfm.paragraph=be(ce.paragraph)("(?!","(?!"+ce.gfm.fences.source.replace("\\1","\\2")+"|"+ce.list.source.replace("\\1","\\3")+"|")(),ce.tables=xe({},ce.gfm,{nptable:/^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,table:/^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/}),de.rules=ce,de.lex=function(e,t){return new de(t).lex(e)},de.prototype.lex=function(e){return e=e.replace(/\r\n|\r/g,"\n").replace(/\t/g," ").replace(/\u00a0/g," ").replace(/\u2424/g,"\n"),this.token(e,!0)},de.prototype.token=function(e,t,n){var r,i,o,s,a,l,u,c,d;for(e=e.replace(/^ +$/gm,"");e;)if((o=this.rules.newline.exec(e))&&(e=e.substring(o[0].length),o[0].length>1&&this.tokens.push({type:"space"})),o=this.rules.code.exec(e))e=e.substring(o[0].length),o=o[0].replace(/^ {4}/gm,""),this.tokens.push({type:"code",text:this.options.pedantic?o:o.replace(/\n+$/,"")});else if(o=this.rules.fences.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"code",lang:o[2],text:o[3]||""});else if(o=this.rules.heading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:o[1].length,text:o[2]});else if(t&&(o=this.rules.nptable.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].split(/ *\| */);this.tokens.push(l)}else if(o=this.rules.lheading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:"="===o[2]?1:2,text:o[1]});else if(o=this.rules.hr.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"hr"});else if(o=this.rules.blockquote.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"blockquote_start"}),o=o[0].replace(/^ *> ?/gm,""),this.token(o,t,!0),this.tokens.push({type:"blockquote_end"});else if(o=this.rules.list.exec(e)){for(e=e.substring(o[0].length),s=o[2],this.tokens.push({type:"list_start",ordered:s.length>1}),r=!1,d=(o=o[0].match(this.rules.item)).length,c=0;c<d;c++)u=(l=o[c]).length,~(l=l.replace(/^ *([*+-]|\d+\.) +/,"")).indexOf("\n ")&&(u-=l.length,l=this.options.pedantic?l.replace(/^ {1,4}/gm,""):l.replace(new RegExp("^ {1,"+u+"}","gm"),"")),this.options.smartLists&&c!==d-1&&(s===(a=ce.bullet.exec(o[c+1])[0])||s.length>1&&a.length>1||(e=o.slice(c+1).join("\n")+e,c=d-1)),i=r||/\n\n(?!\s*$)/.test(l),c!==d-1&&(r="\n"===l.charAt(l.length-1),i||(i=r)),this.tokens.push({type:i?"loose_item_start":"list_item_start"}),this.token(l,!1,n),this.tokens.push({type:"list_item_end"});this.tokens.push({type:"list_end"})}else if(o=this.rules.html.exec(e))e=e.substring(o[0].length),this.tokens.push({type:this.options.sanitize?"paragraph":"html",pre:!this.options.sanitizer&&("pre"===o[1]||"script"===o[1]||"style"===o[1]),text:o[0]});else if(!n&&t&&(o=this.rules.def.exec(e)))e=e.substring(o[0].length),this.tokens.links[o[1].toLowerCase()]={href:o[2],title:o[3]};else if(t&&(o=this.rules.table.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/(?: *\| *)?\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].replace(/^ *\| *| *\| *$/g,"").split(/ *\| */);this.tokens.push(l)}else if(t&&(o=this.rules.paragraph.exec(e)))e=e.substring(o[0].length),this.tokens.push({type:"paragraph",text:"\n"===o[1].charAt(o[1].length-1)?o[1].slice(0,-1):o[1]});else if(o=this.rules.text.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"text",text:o[0]});else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0));return this.tokens};var he={escape:/^\\([\\`*{}\[\]()#+\-.!_>])/,autolink:/^<([^ <>]+(@|:\/)[^ <>]+)>/,url:ye,tag:/^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^<'">])*?>/,link:/^!?\[(inside)\]\(href\)/,reflink:/^!?\[(inside)\]\s*\[([^\]]*)\]/,nolink:/^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,strong:/^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,em:/^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,code:/^(`+)([\s\S]*?[^`])\1(?!`)/,br:/^ {2,}\n(?!\s*$)/,del:ye,text:/^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/};function pe(e,t){if(this.options=t||ke.defaults,this.links=e,this.rules=he.normal,this.renderer=this.options.renderer||new fe,this.renderer.options=this.options,!this.links)throw new Error("Tokens array requires a `links` property.");this.options.gfm?this.options.breaks?this.rules=he.breaks:this.rules=he.gfm:this.options.pedantic&&(this.rules=he.pedantic)}function fe(e){this.options=e||{}}function me(e){this.tokens=[],this.token=null,this.options=e||ke.defaults,this.options.renderer=this.options.renderer||new fe,this.renderer=this.options.renderer,this.renderer.options=this.options}function ge(e,t){return e.replace(t?/&/g:/&(?!#?\w+;)/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#39;")}function be(e,t){return e=e.source,t=t||"",function n(r,i){return r?(i=(i=i.source||i).replace(/(^|[^\[])\^/g,"$1"),e=e.replace(r,i),n):new RegExp(e,t)}}function ve(e,t){return _e[" "+e]||(/^[^:]+:\/*[^\/]*$/.test(e)?_e[" "+e]=e+"/":_e[" "+e]=e.replace(/[^\/]*$/,"")),e=_e[" "+e],"//"===t.slice(0,2)?e.replace(/:[\s\S]*/,":")+t:"/"===t.charAt(0)?e.replace(/(:\/*[^\/]*)[\s\S]*/,"$1")+t:e+t}he._inside=/(?:\[[^\]]*\]|\\[\[\]]|[^\[\]]|\](?=[^\[]*\]))*/,he._href=/\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/,he.link=be(he.link)("inside",he._inside)("href",he._href)(),he.reflink=be(he.reflink)("inside",he._inside)(),he.normal=xe({},he),he.pedantic=xe({},he.normal,{strong:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,em:/^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/}),he.gfm=xe({},he.normal,{escape:be(he.escape)("])","~|])")(),url:/^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,del:/^~~(?=\S)([\s\S]*?\S)~~/,text:be(he.text)("]|","~]|")("|","|https?://|")()}),he.breaks=xe({},he.gfm,{br:be(he.br)("{2,}","*")(),text:be(he.gfm.text)("{2,}","*")()}),pe.rules=he,pe.output=function(e,t,n){return new pe(t,n).output(e)},pe.prototype.output=function(e){for(var t,n,r,i,o="";e;)if(i=this.rules.escape.exec(e))e=e.substring(i[0].length),o+=i[1];else if(i=this.rules.autolink.exec(e))e=e.substring(i[0].length),"@"===i[2]?(n=ge(":"===i[1].charAt(6)?this.mangle(i[1].substring(7)):this.mangle(i[1])),r=this.mangle("mailto:")+n):r=n=ge(i[1]),o+=this.renderer.link(r,null,n);else if(this.inLink||!(i=this.rules.url.exec(e))){if(i=this.rules.tag.exec(e))!this.inLink&&/^<a /i.test(i[0])?this.inLink=!0:this.inLink&&/^<\/a>/i.test(i[0])&&(this.inLink=!1),e=e.substring(i[0].length),o+=this.options.sanitize?this.options.sanitizer?this.options.sanitizer(i[0]):ge(i[0]):i[0];else if(i=this.rules.link.exec(e))e=e.substring(i[0].length),this.inLink=!0,o+=this.outputLink(i,{href:i[2],title:i[3]}),this.inLink=!1;else if((i=this.rules.reflink.exec(e))||(i=this.rules.nolink.exec(e))){if(e=e.substring(i[0].length),t=(i[2]||i[1]).replace(/\s+/g," "),!(t=this.links[t.toLowerCase()])||!t.href){o+=i[0].charAt(0),e=i[0].substring(1)+e;continue}this.inLink=!0,o+=this.outputLink(i,t),this.inLink=!1}else if(i=this.rules.strong.exec(e))e=e.substring(i[0].length),o+=this.renderer.strong(this.output(i[2]||i[1]));else if(i=this.rules.em.exec(e))e=e.substring(i[0].length),o+=this.renderer.em(this.output(i[2]||i[1]));else if(i=this.rules.code.exec(e))e=e.substring(i[0].length),o+=this.renderer.codespan(ge(i[2].trim(),!0));else if(i=this.rules.br.exec(e))e=e.substring(i[0].length),o+=this.renderer.br();else if(i=this.rules.del.exec(e))e=e.substring(i[0].length),o+=this.renderer.del(this.output(i[1]));else if(i=this.rules.text.exec(e))e=e.substring(i[0].length),o+=this.renderer.text(ge(this.smartypants(i[0])));else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0))}else e=e.substring(i[0].length),r=n=ge(i[1]),o+=this.renderer.link(r,null,n);return o},pe.prototype.outputLink=function(e,t){var n=ge(t.href),r=t.title?ge(t.title):null;return"!"!==e[0].charAt(0)?this.renderer.link(n,r,this.output(e[1])):this.renderer.image(n,r,ge(e[1]))},pe.prototype.smartypants=function(e){return this.options.smartypants?e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014\/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014\/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…"):e},pe.prototype.mangle=function(e){if(!this.options.mangle)return e;for(var t,n="",r=e.length,i=0;i<r;i++)t=e.charCodeAt(i),Math.random()>.5&&(t="x"+t.toString(16)),n+="&#"+t+";";return n},fe.prototype.code=function(e,t,n){if(this.options.highlight){var r=this.options.highlight(e,t);null!=r&&r!==e&&(n=!0,e=r)}return t?'<pre><code class="'+this.options.langPrefix+ge(t,!0)+'">'+(n?e:ge(e,!0))+"\n</code></pre>\n":"<pre><code>"+(n?e:ge(e,!0))+"\n</code></pre>"},fe.prototype.blockquote=function(e){return"<blockquote>\n"+e+"</blockquote>\n"},fe.prototype.html=function(e){return e},fe.prototype.heading=function(e,t,n){return"<h"+t+' id="'+this.options.headerPrefix+n.toLowerCase().replace(/[^\w]+/g,"-")+'">'+e+"</h"+t+">\n"},fe.prototype.hr=function(){return this.options.xhtml?"<hr/>\n":"<hr>\n"},fe.prototype.list=function(e,t){var n=t?"ol":"ul";return"<"+n+">\n"+e+"</"+n+">\n"},fe.prototype.listitem=function(e){return"<li>"+e+"</li>\n"},fe.prototype.paragraph=function(e){return"<p>"+e+"</p>\n"},fe.prototype.table=function(e,t){return"<table>\n<thead>\n"+e+"</thead>\n<tbody>\n"+t+"</tbody>\n</table>\n"},fe.prototype.tablerow=function(e){return"<tr>\n"+e+"</tr>\n"},fe.prototype.tablecell=function(e,t){var n=t.header?"th":"td";return(t.align?"<"+n+' style="text-align:'+t.align+'">':"<"+n+">")+e+"</"+n+">\n"},fe.prototype.strong=function(e){return"<strong>"+e+"</strong>"},fe.prototype.em=function(e){return"<em>"+e+"</em>"},fe.prototype.codespan=function(e){return"<code>"+e+"</code>"},fe.prototype.br=function(){return this.options.xhtml?"<br/>":"<br>"},fe.prototype.del=function(e){return"<del>"+e+"</del>"},fe.prototype.link=function(e,t,n){if(this.options.sanitize){try{var r=decodeURIComponent((i=e,i.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/gi,function(e,t){return"colon"===(t=t.toLowerCase())?":":"#"===t.charAt(0)?"x"===t.charAt(1)?String.fromCharCode(parseInt(t.substring(2),16)):String.fromCharCode(+t.substring(1)):""}))).replace(/[^\w:]/g,"").toLowerCase()}catch(e){return n}if(0===r.indexOf("javascript:")||0===r.indexOf("vbscript:")||0===r.indexOf("data:"))return n}var i;this.options.baseUrl&&!we.test(e)&&(e=ve(this.options.baseUrl,e));var o='<a href="'+e+'"';return t&&(o+=' title="'+t+'"'),o+=">"+n+"</a>"},fe.prototype.image=function(e,t,n){this.options.baseUrl&&!we.test(e)&&(e=ve(this.options.baseUrl,e));var r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">"},fe.prototype.text=function(e){return e},me.parse=function(e,t,n){return new me(t,n).parse(e)},me.prototype.parse=function(e){this.inline=new pe(e.links,this.options,this.renderer),this.tokens=e.reverse();for(var t="";this.next();)t+=this.tok();return t},me.prototype.next=function(){return this.token=this.tokens.pop()},me.prototype.peek=function(){return this.tokens[this.tokens.length-1]||0},me.prototype.parseText=function(){for(var e=this.token.text;"text"===this.peek().type;)e+="\n"+this.next().text;return this.inline.output(e)},me.prototype.tok=function(){switch(this.token.type){case"space":return"";case"hr":return this.renderer.hr();case"heading":return this.renderer.heading(this.inline.output(this.token.text),this.token.depth,this.token.text);case"code":return this.renderer.code(this.token.text,this.token.lang,this.token.escaped);case"table":var e,t,n,r,i="",o="";for(n="",e=0;e<this.token.header.length;e++)({header:!0,align:this.token.align[e]}),n+=this.renderer.tablecell(this.inline.output(this.token.header[e]),{header:!0,align:this.token.align[e]});for(i+=this.renderer.tablerow(n),e=0;e<this.token.cells.length;e++){for(t=this.token.cells[e],n="",r=0;r<t.length;r++)n+=this.renderer.tablecell(this.inline.output(t[r]),{header:!1,align:this.token.align[r]});o+=this.renderer.tablerow(n)}return this.renderer.table(i,o);case"blockquote_start":for(o="";"blockquote_end"!==this.next().type;)o+=this.tok();return this.renderer.blockquote(o);case"list_start":o="";for(var s=this.token.ordered;"list_end"!==this.next().type;)o+=this.tok();return this.renderer.list(o,s);case"list_item_start":for(o="";"list_item_end"!==this.next().type;)o+="text"===this.token.type?this.parseText():this.tok();return this.renderer.listitem(o);case"loose_item_start":for(o="";"list_item_end"!==this.next().type;)o+=this.tok();return this.renderer.listitem(o);case"html":var a=this.token.pre||this.options.pedantic?this.token.text:this.inline.output(this.token.text);return this.renderer.html(a);case"paragraph":return this.renderer.paragraph(this.inline.output(this.token.text));case"text":return this.renderer.paragraph(this.parseText())}};var _e={},we=/^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;function ye(){}function xe(e){for(var t,n,r=1;r<arguments.length;r++)for(n in t=arguments[r])Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n]);return e}function ke(e,t,n){if(n||"function"==typeof t){n||(n=t,t=null);var r,i,o=(t=xe({},ke.defaults,t||{})).highlight,s=0;try{r=de.lex(e,t)}catch(e){return n(e)}i=r.length;var a=function(e){if(e)return t.highlight=o,n(e);var i;try{i=me.parse(r,t)}catch(t){e=t}return t.highlight=o,e?n(e):n(null,i)};if(!o||o.length<3)return a();if(delete t.highlight,!i)return a();for(;s<r.length;s++)!function(e){"code"!==e.type?--i||a():o(e.text,e.lang,function(t,n){return t?a(t):null==n||n===e.text?--i||a():(e.text=n,e.escaped=!0,void(--i||a()))})}(r[s])}else try{return t&&(t=xe({},ke.defaults,t)),me.parse(de.lex(e,t),t)}catch(e){if(e.message+="\nPlease report this to https://github.com/chjj/marked.",(t||ke.defaults).silent)return"<p>An error occurred:</p><pre>"+ge(e.message+"",!0)+"</pre>";throw e}}ye.exec=ye,ke.options=ke.setOptions=function(e){return xe(ke.defaults,e),ke},ke.defaults={gfm:!0,tables:!0,breaks:!1,pedantic:!1,sanitize:!1,sanitizer:null,mangle:!0,smartLists:!1,silent:!1,highlight:null,langPrefix:"lang-",smartypants:!1,headerPrefix:"",renderer:new fe,xhtml:!1,baseUrl:null},ke.Parser=me,ke.parser=me.parse,ke.Renderer=fe,ke.Lexer=de,ke.lexer=de.lex,ke.InlineLexer=pe,ke.inlineLexer=pe.output,ke.parse=ke;const Ce="https://cdn.jsdelivr.net/npm/@observablehq/highlight.js@2.0.0/";function Ee(e){return function(){return le(function(t){var n=document.createElement("div");n.innerHTML=ke(t,{langPrefix:""}).trim();var r=n.querySelectorAll("pre code[class]");return r.length>0&&e(Ce+"highlight.min.js").then(function(t){r.forEach(function(n){function r(){t.highlightBlock(n),n.parentNode.classList.add("observablehq--md-pre")}t.getLanguage(n.className)?r():e(Ce+"async-languages/index.js").then(r=>{if(r.has(n.className))return e(Ce+"async-languages/"+r.get(n.className)).then(e=>{t.registerLanguage(n.className,e)})}).then(r,r)})}),n},function(){return document.createElement("div")})}}function Se(e){let t;Object.defineProperties(this,{generator:{value:oe(e=>void(t=e))},value:{get:()=>e,set:n=>t(e=n)}}),void 0!==e&&t(e)}function*$e(){for(;;)yield Date.now()}var Ne=new Map;function qe(e,t){var n;return(n=Ne.get(e=+e))?n.then(K(t)):(n=Date.now())>=e?Promise.resolve(t):function(e,t){var n=new Promise(function(n){Ne.delete(t);var r=t-e;if(!(r>0))throw new Error("invalid time");if(r>2147483647)throw new Error("too long to wait");setTimeout(n,r)});return Ne.set(t,n),n}(n,e).then(K(t))}var Le={delay:function(e,t){return new Promise(function(n){setTimeout(function(){n(t)},e)})},tick:function(e,t){return qe(Math.ceil((Date.now()+1)/e)*e,t)},when:qe};function Pe(e,t){if(/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new Error("illegal name");return"https://unpkg.com/"+e}const je=new Map,Ae=[],Oe=Ae.map,Te=Ae.some,Me=Ae.hasOwnProperty,Ue="https://cdn.jsdelivr.net/npm/",Re=/^((?:@[^\/@]+\/)?[^\/@]+)(?:@([^\/]+))?(?:\/(.*))?$/,ze=/^\d+\.\d+\.\d+(-[\w-.+]+)?$/,Fe=/\.[^\/]*$/,De=["unpkg","jsdelivr","browser","main"];class RequireError extends Error{constructor(e){super(e)}}function Ie(e){const t=Re.exec(e);return t&&{name:t[1],version:t[2],path:t[3]}}function He(e){const t=`${Ue}${e.name}${e.version?`@${e.version}`:""}/package.json`;let n=je.get(t);return n||je.set(t,n=fetch(t).then(e=>{if(!e.ok)throw new RequireError("unable to load package.json");return e.redirected&&!je.has(e.url)&&je.set(e.url,n),e.json()})),n}RequireError.prototype.name=RequireError.name;const We=Be(async function(e,t){if(e.startsWith(Ue)&&(e=e.substring(Ue.length)),/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new RequireError("illegal name");const n=Ie(e);if(!n)return`${Ue}${e}`;if(!n.version&&null!=t&&t.startsWith(Ue)){const e=await He(Ie(t.substring(Ue.length)));n.version=e.dependencies&&e.dependencies[n.name]||e.peerDependencies&&e.peerDependencies[n.name]}if(n.path&&!Fe.test(n.path)&&(n.path+=".js"),n.path&&n.version&&ze.test(n.version))return`${Ue}${n.name}@${n.version}/${n.path}`;const r=await He(n);return`${Ue}${r.name}@${r.version}/${n.path||function(e){for(const t of De){const n=e[t];if("string"==typeof n)return Fe.test(n)?n:`${n}.js`}}(r)||"index.js"}`});function Be(e){const t=new Map,n=i(null);function r(e){if("string"!=typeof e)return e;let n=t.get(e);return n||t.set(e,n=new Promise((t,n)=>{const r=document.createElement("script");r.onload=(()=>{try{t(Ae.pop()(i(e)))}catch(e){n(new RequireError("invalid module"))}r.remove()}),r.onerror=(()=>{n(new RequireError("unable to load module")),r.remove()}),r.async=!0,r.src=e,window.define=Ye,document.head.appendChild(r)})),n}function i(t){return n=>Promise.resolve(e(n,t)).then(r)}function o(e){return arguments.length>1?Promise.all(Oe.call(arguments,n)).then(Ve):n(e)}return o.alias=function(t){return Be((n,r)=>n in t&&(r=null,"string"!=typeof(n=t[n]))?n:e(n,r))},o.resolve=e,o}function Ve(e){const t={};for(const n of e)for(const e in n)Me.call(n,e)&&(null==n[e]?Object.defineProperty(t,e,{get:Ge(n,e)}):t[e]=n[e]);return t}function Ge(e,t){return()=>e[t]}function Je(e){return e+""=="exports"}function Ye(e,t,n){const r=arguments.length;r<2?(n=e,t=[]):r<3&&(n=t,t="string"==typeof e?[]:e),Ae.push(Te.call(t,Je)?e=>{const r={};return Promise.all(Oe.call(t,t=>Je(t+="")?r:e(t))).then(e=>(n.apply(null,e),r))}:e=>Promise.all(Oe.call(t,e)).then(e=>"function"==typeof n?n.apply(null,e):n))}function Xe(e){return null==e?We:Be(e)}Ye.amd={};var Ke=le(function(e){var t=document.createElementNS("http://www.w3.org/2000/svg","g");return t.innerHTML=e.trim(),t},function(){return document.createElementNS("http://www.w3.org/2000/svg","g")}),Qe=String.raw;function Ze(e){return new Promise(function(t,n){var r=document.createElement("link");r.rel="stylesheet",r.href=e,r.onerror=n,r.onload=t,document.head.appendChild(r)})}function et(e){return function(){return Promise.all([e("@observablehq/katex@0.10.1/dist/katex.min.js"),e.resolve("@observablehq/katex@0.10.1/dist/katex.min.css").then(Ze)]).then(function(e){var t=e[0],n=r();function r(e){return function(){var n=document.createElement("div");return t.render(Qe.apply(String,arguments),n,e),n.removeChild(n.firstChild)}}return n.options=r,n.block=r({displayMode:!0}),n})}}function tt(){return oe(function(e){var t=e(document.body.clientWidth);function n(){var n=document.body.clientWidth;n!==t&&e(t=n)}return window.addEventListener("resize",n),function(){window.removeEventListener("resize",n)}})}function nt(e){const t=Xe(e);Object.defineProperties(this,{DOM:{value:te,writable:!0,enumerable:!0},Files:{value:ne,writable:!0,enumerable:!0},Generators:{value:ae,writable:!0,enumerable:!0},html:{value:K(ue),writable:!0,enumerable:!0},md:{value:Ee(t),writable:!0,enumerable:!0},Mutable:{value:K(Se),writable:!0,enumerable:!0},now:{value:$e,writable:!0,enumerable:!0},Promises:{value:Le,writable:!0,enumerable:!0},require:{value:K(t),writable:!0,enumerable:!0},resolve:{value:K(Pe),writable:!0,enumerable:!0},svg:{value:K(Ke),writable:!0,enumerable:!0},tex:{value:et(t),writable:!0,enumerable:!0},width:{value:tt,writable:!0,enumerable:!0}})}function rt(e,t){this.message=e+"",this.input=t}rt.prototype=Object.create(Error.prototype),rt.prototype.name="RuntimeError",rt.prototype.constructor=rt;var it=Array.prototype,ot=it.map,st=it.forEach;function at(e){return function(){return e}}function lt(e){return e}function ut(){}var ct=1,dt=2,ht=3,pt={};function ft(e,t,n){var r;null==n&&(n=pt),Object.defineProperties(this,{_observer:{value:n,writable:!0},_definition:{value:bt,writable:!0},_duplicate:{value:void 0,writable:!0},_duplicates:{value:void 0,writable:!0},_indegree:{value:-1,writable:!0},_inputs:{value:[],writable:!0},_invalidate:{value:ut,writable:!0},_module:{value:t},_name:{value:null,writable:!0},_outputs:{value:new Set,writable:!0},_promise:{value:Promise.resolve(void 0),writable:!0},_reachable:{value:n!==pt,writable:!0},_rejector:{value:(r=this,function(e){if(e===bt)throw new rt(r._name+" is not defined",r._name);throw new rt(r._name+" could not be resolved",r._name)})},_type:{value:e},_value:{value:void 0,writable:!0},_version:{value:0,writable:!0}})}function mt(e){e._module._runtime._dirty.add(e),e._outputs.add(this)}function gt(e){e._module._runtime._dirty.add(e),e._outputs.delete(this)}function bt(){throw bt}function vt(e){return function(){throw new rt(e+" is defined more than once")}}function _t(e,t,n){var r=this._module._scope,i=this._module._runtime;if(this._inputs.forEach(gt,this),t.forEach(mt,this),this._inputs=t,this._definition=n,this._value=void 0,n===ut?i._variables.delete(this):i._variables.add(this),e==this._name&&r.get(e)===this)this._outputs.forEach(i._updates.add,i._updates);else{var o,s;if(this._name)if(this._outputs.size)r.delete(this._name),(s=this._module._resolve(this._name))._outputs=this._outputs,this._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(this)]=s},this),s._outputs.forEach(i._updates.add,i._updates),i._dirty.add(s).add(this),r.set(this._name,s);else if((s=r.get(this._name))===this)r.delete(this._name);else{if(s._type!==ht)throw new Error;s._duplicates.delete(this),this._duplicate=void 0,1===s._duplicates.size&&(s=s._duplicates.keys().next().value,o=r.get(this._name),s._outputs=o._outputs,o._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(o)]=s}),s._definition=s._duplicate,s._duplicate=void 0,i._dirty.add(o).add(s),i._updates.add(s),r.set(this._name,s))}if(this._outputs.size)throw new Error;e&&((s=r.get(e))?s._type===ht?(this._definition=vt(e),this._duplicate=n,s._duplicates.add(this)):s._type===dt?(this._outputs=s._outputs,s._outputs=new Set,this._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=this},this),i._dirty.add(s).add(this),r.set(e,this)):(s._duplicate=s._definition,this._duplicate=n,(o=new ft(ht,this._module))._name=e,o._definition=this._definition=s._definition=vt(e),o._outputs=s._outputs,s._outputs=new Set,o._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=o}),o._duplicates=new Set([this,s]),i._dirty.add(s).add(o),i._updates.add(s).add(o),r.set(e,o)):r.set(e,this)),this._name=e}return i._updates.add(this),i._compute(),this}Object.defineProperties(ft.prototype,{_pending:{value:function(){this._observer.pending&&this._observer.pending()},writable:!0,configurable:!0},_fulfilled:{value:function(e){this._observer.fulfilled&&this._observer.fulfilled(e,this._name)},writable:!0,configurable:!0},_rejected:{value:function(e){this._observer.rejected&&this._observer.rejected(e,this._name)},writable:!0,configurable:!0},define:{value:function(e,t,n){switch(arguments.length){case 1:n=e,e=t=null;break;case 2:n=t,"string"==typeof e?t=null:(t=e,e=null)}return _t.call(this,null==e?null:e+"",null==t?[]:ot.call(t,this._module._resolve,this._module),"function"==typeof n?n:at(n))},writable:!0,configurable:!0},delete:{value:function(){return _t.call(this,null,[],ut)},writable:!0,configurable:!0},import:{value:function(e,t,n){arguments.length<3&&(n=t,t=e);return _t.call(this,t+"",[n._resolve(e+"")],lt)},writable:!0,configurable:!0}});var wt=new Map;function yt(e){Object.defineProperties(this,{_runtime:{value:e},_scope:{value:new Map}})}function xt(e){return e._name}Object.defineProperties(yt.prototype,{_copy:{value:function(e,t,n){var r=new yt(this._runtime);return n.set(this,r),this._scope.forEach(function(i,o){var s,a=new ft(i._type,r);if(s=e.get(o))a.import(s.name,s.alias,t);else if(i._definition===lt){var l=i._inputs[0],u=l._module,c=n.get(u)||u._copy(wt,null,n);a.import(l._name,o,c)}else a.define(o,i._inputs.map(xt),i._definition)}),r},writable:!0,configurable:!0},_resolve:{value:function(e){var t,n=this._scope.get(e);if(!n)if(n=new ft(dt,this),this._runtime._builtin._scope.has(e))n.import(e,this._runtime._builtin);else if("invalidation"===e)n.define(e,Ct);else if("visibility"===e)n.define(e,Et);else{try{t=this._runtime._global(e)}catch(t){return n.define(e,(r=t,function(){throw r}))}void 0===t?this._scope.set(n._name=e,n):n.define(e,at(t))}var r;return n},writable:!0,configurable:!0},redefine:{value:function(e){var t=this._scope.get(e);if(!t)throw new rt(e+" is not defined");if(t._type===ht)throw new rt(e+" is defined more than once");return t.define.apply(t,arguments)},writable:!0,configurable:!0},define:{value:function(){var e=new ft(ct,this);return e.define.apply(e,arguments)},writable:!0,configurable:!0},derive:{value:function(e,t){var n=new Map;return st.call(e,function(e){"object"!=typeof e&&(e={name:e+""}),null==e.alias&&(e.alias=e.name),n.set(e.alias,e)}),this._copy(n,t,new Map)},writable:!0,configurable:!0},import:{value:function(){var e=new ft(ct,this);return e.import.apply(e,arguments)},writable:!0,configurable:!0},value:{value:async function(e){var t=this._scope.get(e);if(!t)throw new rt(e+" is not defined");t._observer===pt&&(t._observer=!0,this._runtime._dirty.add(t));return await this._runtime._compute(),t._promise},writable:!0,configurable:!0},variable:{value:function(e){return new ft(ct,this,e)},writable:!0,configurable:!0}});const kt="function"==typeof requestAnimationFrame?requestAnimationFrame:setImmediate;var Ct={},Et={};function St(e=new nt,t=function(e){return window[e]}){var n=this.module();if(Object.defineProperties(this,{_dirty:{value:new Set},_updates:{value:new Set},_computing:{value:null,writable:!0},_init:{value:null,writable:!0},_modules:{value:new Map},_variables:{value:new Set},_disposed:{value:!1,writable:!0},_builtin:{value:n},_global:{value:t}}),e)for(var r in e)new ft(dt,n).define(r,[],e[r])}function $t(e){++e._indegree}function Nt(e){return e._promise.catch(e._rejector)}function qt(e){return new Promise(function(t){e._invalidate=t})}function Lt(e,t){let n,r,i="function"==typeof IntersectionObserver&&t._observer&&t._observer._node,o=!i,s=ut,a=ut;return i&&((r=new IntersectionObserver(([e])=>(o=e.isIntersecting)&&(n=null,s()))).observe(i),e.then(()=>(r.disconnect(),r=null,a()))),function(e){return o?Promise.resolve(e):r?(n||(n=new Promise((e,t)=>(s=e,a=t))),n.then(()=>e)):Promise.reject()}}function Pt(e){e._invalidate(),e._invalidate=ut,e._pending();var t=e._value,n=++e._version,r=null,i=e._promise=Promise.all(e._inputs.map(Nt)).then(function(i){if(e._version===n){for(var o=0,s=i.length;o<s;++o)switch(i[o]){case Ct:i[o]=r=qt(e);break;case Et:r||(r=qt(e)),i[o]=Lt(r,e)}return e._definition.apply(t,i)}}).then(function(t){return function(e){return e&&"function"==typeof e.next&&"function"==typeof e.return}(t)?((r||qt(e)).then((o=t,function(){o.return()})),function(e,t,n,r){function i(){var n=new Promise(function(e){e(r.next())}).then(function(r){return r.done?void 0:Promise.resolve(r.value).then(function(r){if(e._version===t)return jt(e,r,n).then(i),e._fulfilled(r),r})});n.catch(function(r){e._version===t&&(jt(e,void 0,n),e._rejected(r))})}return new Promise(function(e){e(r.next())}).then(function(e){if(!e.done)return n.then(i),e.value})}(e,n,i,t)):t;var o});i.then(function(t){e._version===n&&(e._value=t,e._fulfilled(t))},function(t){e._version===n&&(e._value=void 0,e._rejected(t))})}function jt(e,t,n){var r=e._module._runtime;return e._value=t,e._promise=n,e._outputs.forEach(r._updates.add,r._updates),r._compute()}Object.defineProperties(St,{load:{value:function(e,t,n){if("function"==typeof t&&(n=t,t=null),"function"!=typeof n)throw new Error("invalid observer");null==t&&(t=new nt);const{modules:r,id:i}=e,o=new Map,s=new St(t),a=l(i);function l(e){let t=o.get(e);return t||o.set(e,t=s.module()),t}for(const e of r){const t=l(e.id);let r=0;for(const i of e.variables)i.from?t.import(i.remote,i.name,l(i.from)):t===a?t.variable(n(i,r,e.variables)).define(i.name,i.inputs,i.value):t.define(i.name,i.inputs,i.value),++r}return s},writable:!0,configurable:!0}}),Object.defineProperties(St.prototype,{_compute:{value:function(){return this._computing||(this._computing=this._computeSoon())},writable:!0,configurable:!0},_computeSoon:{value:function(){var e=this;return new Promise(function(t){kt(function(){t(),e._disposed||e._computeNow()})})},writable:!0,configurable:!0},_computeNow:{value:function(){var e,t,n=[];(e=new Set(this._dirty)).forEach(function(t){t._inputs.forEach(e.add,e);const n=function(e){if(e._observer!==pt)return!0;var t=new Set(e._outputs);for(const e of t){if(e._observer!==pt)return!0;e._outputs.forEach(t.add,t)}return!1}(t);n>t._reachable?this._updates.add(t):n<t._reachable&&t._invalidate(),t._reachable=n},this),(e=new Set(this._updates)).forEach(function(t){t._reachable?(t._indegree=0,t._outputs.forEach(e.add,e)):(t._indegree=-1,e.delete(t))}),this._computing=null,this._updates.clear(),this._dirty.clear(),e.forEach(function(e){e._outputs.forEach($t)}),e.forEach(function(e){0===e._indegree&&n.push(e)});for(;t=n.pop();)Pt(t),t._outputs.forEach(r),e.delete(t);function r(e){0==--e._indegree&&n.push(e)}e.forEach(function(e){var t=new rt("circular definition");e._value=void 0,(e._promise=Promise.reject(t)).catch(ut),e._rejected(t)})},writable:!0,configurable:!0},dispose:{value:function(){this._computing=Promise.resolve(),this._disposed=!0,this._variables.forEach(e=>{e._invalidate(),e._version=NaN})},writable:!0,configurable:!0},module:{value:function(e,t=ut){let n;if(void 0===e)return(n=this._init)?(this._init=null,n):new yt(this);if(n=this._modules.get(e))return n;this._init=n=new yt(this),this._modules.set(e,n);try{e(this,t)}finally{this._init=null}return n},writable:!0,configurable:!0}});export{X as Inspector,nt as Library,St as Runtime,rt as RuntimeError};

4

dist/runtime.umd.js

@@ -1,2 +0,2 @@

// @observablehq/runtime v4.2.0 Copyright 2019 Observable, Inc.
!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(e.observablehq=e.observablehq||{})}(this,function(e){"use strict";function t(e,t,n){n=n||{};var r=e.ownerDocument,i=r.defaultView.CustomEvent;"function"==typeof i?i=new i(t,{detail:n}):((i=r.createEvent("Event")).initEvent(t,!1,!1),i.detail=n),e.dispatchEvent(i)}function n(e){return Array.isArray(e)||e instanceof Int8Array||e instanceof Int16Array||e instanceof Int32Array||e instanceof Uint8Array||e instanceof Uint8ClampedArray||e instanceof Uint16Array||e instanceof Uint32Array||e instanceof Float32Array||e instanceof Float64Array}function r(e){return e===(0|e)+""}function i(e){const t=document.createElement("span");return t.className="observablehq--cellname",t.textContent=`${e} = `,t}const o=Symbol.prototype.toString;function s(e){return o.call(e)}const{getOwnPropertySymbols:a,prototype:{hasOwnProperty:l}}=Object,{toStringTag:u}=Symbol,c={},d=a;function h(e,t){return l.call(e,t)}function p(e){return e[u]||e.constructor&&e.constructor.name||"Object"}function f(e,t){try{const n=e[t];return n&&n.constructor,n}catch(e){return c}}function m(e,r,o){const s=n(e);let a,l,u;e instanceof Map?(a=`Map(${e.size})`,l=g):e instanceof Set?(a=`Set(${e.size})`,l=b):s?(a=`${e.constructor.name}(${e.length})`,l=v):(a=p(e),l=_);const c=document.createElement("span");c.className="observablehq--expanded",o&&c.appendChild(i(o));const d=c.appendChild(document.createElement("a"));d.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M4 7L0 1h8z' fill='currentColor' />\n </svg>",d.appendChild(document.createTextNode(`${a}${s?" [":" {"}`)),d.addEventListener("mouseup",function(t){t.stopPropagation(),Y(c,C(e,null,o))}),l=l(e);for(let e=0;!(u=l.next()).done&&e<20;++e)c.appendChild(u.value);if(!u.done){const e=c.appendChild(document.createElement("a"));e.className="observablehq--field",e.style.display="block",e.appendChild(document.createTextNode(" … more")),e.addEventListener("mouseup",function(e){e.stopPropagation(),c.insertBefore(u.value,c.lastChild.previousSibling);for(let e=0;!(u=l.next()).done&&e<19;++e)c.insertBefore(u.value,c.lastChild.previousSibling);u.done&&c.removeChild(c.lastChild.previousSibling),t(c,"load")})}return c.appendChild(document.createTextNode(s?"]":"}")),c}function*g(e){for(const[t,n]of e)yield y(t,n);yield*_(e)}function*b(e){for(const t of e)yield x(t);yield*_(e)}function*v(e){for(let t=0,n=e.length;t<n;++t)t in e&&(yield w(t,f(e,t),"observablehq--index"));for(const t in e)!r(t)&&h(e,t)&&(yield w(t,f(e,t),"observablehq--key"));for(const t of d(e))yield w(s(t),f(e,t),"observablehq--symbol")}function*_(e){for(const t in e)h(e,t)&&(yield w(t,f(e,t),"observablehq--key"));for(const t of d(e))yield w(s(t),f(e,t),"observablehq--symbol")}function w(e,t,n){const r=document.createElement("div"),i=r.appendChild(document.createElement("span"));return r.className="observablehq--field",i.className=n,i.textContent=` ${e}`,r.appendChild(document.createTextNode(": ")),r.appendChild(J(t)),r}function y(e,t){const n=document.createElement("div");return n.className="observablehq--field",n.appendChild(document.createTextNode(" ")),n.appendChild(J(e)),n.appendChild(document.createTextNode(" => ")),n.appendChild(J(t)),n}function x(e){const t=document.createElement("div");return t.className="observablehq--field",t.appendChild(document.createTextNode(" ")),t.appendChild(J(e)),t}function k(e){const t=window.getSelection();return"Range"===t.type&&(t.containsNode(e,!0)||t.anchorNode.isSelfOrDescendant(e)||t.focusNode.isSelfOrDescendant(e))}function C(e,t,r){const o=n(e);let s,a,l;if(e instanceof Map?(s=`Map(${e.size})`,a=E):e instanceof Set?(s=`Set(${e.size})`,a=S):o?(s=`${e.constructor.name}(${e.length})`,a=$):(s=p(e),a=q),t){const t=document.createElement("span");return t.className="observablehq--shallow",r&&t.appendChild(i(r)),t.appendChild(document.createTextNode(s)),t.addEventListener("mouseup",function(n){k(t)||(n.stopPropagation(),Y(t,C(e)))}),t}const u=document.createElement("span");u.className="observablehq--collapsed",r&&u.appendChild(i(r));const c=u.appendChild(document.createElement("a"));c.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M7 4L1 8V0z' fill='currentColor' />\n </svg>",c.appendChild(document.createTextNode(`${s}${o?" [":" {"}`)),u.addEventListener("mouseup",function(t){k(u)||(t.stopPropagation(),Y(u,m(e,0,r)))},!0),a=a(e);for(let e=0;!(l=a.next()).done&&e<20;++e)e>0&&u.appendChild(document.createTextNode(", ")),u.appendChild(l.value);return l.done||u.appendChild(document.createTextNode(", …")),u.appendChild(document.createTextNode(o?"]":"}")),u}function*E(e){for(const[t,n]of e)yield P(t,n);yield*q(e)}function*S(e){for(const t of e)yield J(t,!0);yield*q(e)}function*$(e){let t=-1,n=0;for(const r=e.length;n<r;++n)n in e&&(n>t+1&&(yield N(n-t-1)),yield J(f(e,n),!0),t=n);n>t+1&&(yield N(n-t-1));for(const t in e)!r(t)&&h(e,t)&&(yield L(t,f(e,t),"observablehq--key"));for(const t of d(e))yield L(s(t),f(e,t),"observablehq--symbol")}function*q(e){for(const t in e)h(e,t)&&(yield L(t,f(e,t),"observablehq--key"));for(const t of d(e))yield L(s(t),f(e,t),"observablehq--symbol")}function N(e){const t=document.createElement("span");return t.className="observablehq--empty",t.textContent=1===e?"empty":`empty × ${e}`,t}function L(e,t,n){const r=document.createDocumentFragment(),i=r.appendChild(document.createElement("span"));return i.className=n,i.textContent=e,r.appendChild(document.createTextNode(": ")),r.appendChild(J(t,!0)),r}function P(e,t){const n=document.createDocumentFragment();return n.appendChild(J(e,!0)),n.appendChild(document.createTextNode(" => ")),n.appendChild(J(t,!0)),n}function j(e,t){var n=e+"",r=n.length;return r<t?new Array(t-r+1).join(0)+n:n}function A(e){return e<0?"-"+j(-e,6):e>9999?"+"+j(e,6):j(e,4)}var O=Error.prototype.toString;var M=RegExp.prototype.toString;const T=20;function U(e){return e.replace(/[\\`\x00-\x09\x0b-\x19]|\${/g,R)}function R(e){var t=e.charCodeAt(0);switch(t){case 8:return"\\b";case 9:return"\\t";case 11:return"\\v";case 12:return"\\f";case 13:return"\\r"}return t<16?"\\x0"+t.toString(16):t<32?"\\x"+t.toString(16):"\\"+e}function z(e,t){for(var n=0;t.exec(e);)++n;return n}var F=Function.prototype.toString,D={prefix:"async ƒ"},I={prefix:"async ƒ*"},H={prefix:"class"},W={prefix:"ƒ"},B={prefix:"ƒ*"};function V(e,t,n){var r=document.createElement("span");r.className="observablehq--function",n&&r.appendChild(i(n));var o=r.appendChild(document.createElement("span"));return o.className="observablehq--keyword",o.textContent=e.prefix,r.appendChild(document.createTextNode(t)),r}const{prototype:{toString:G}}=Object;function J(e,t,n,r){let o=typeof e;switch(o){case"boolean":case"undefined":e+="";break;case"number":e=0===e&&1/e<0?"-0":e+"";break;case"bigint":e+="n";break;case"symbol":e=s(e);break;case"function":return function(e,t){var n,r,i=F.call(e);switch(e.constructor&&e.constructor.name){case"AsyncFunction":n=D;break;case"AsyncGeneratorFunction":n=I;break;case"GeneratorFunction":n=B;break;default:n=/^class\b/.test(i)?H:W}return n===H?V(n,"",t):(r=/^(?:async\s*)?(\w+)\s*=>/.exec(i))?V(n,"("+r[1]+")",t):(r=/^(?:async\s*)?\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?V(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):(r=/^(?:async\s*)?function(?:\s*\*)?(?:\s*\w+)?\s*\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?V(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):V(n,"(…)",t)}(e,r);case"string":return function(e,t,n,r){if(!1===t){if(z(e,/["\n]/g)<=z(e,/`|\${/g)){const t=document.createElement("span");r&&t.appendChild(i(r));const n=t.appendChild(document.createElement("span"));return n.className="observablehq--string",n.textContent=JSON.stringify(e),t}const o=e.split("\n");if(o.length>T&&!n){const n=document.createElement("div");r&&n.appendChild(i(r));const s=n.appendChild(document.createElement("span"));s.className="observablehq--string",s.textContent="`"+U(o.slice(0,T).join("\n"));const a=n.appendChild(document.createElement("span")),l=o.length-T;return a.textContent=`Show ${l} truncated line${l>1?"s":""}`,a.className="observablehq--string-expand",a.addEventListener("mouseup",function(i){i.stopPropagation(),Y(n,J(e,t,!0,r))}),n}const s=document.createElement("span");r&&s.appendChild(i(r));const a=s.appendChild(document.createElement("span"));return a.className=`observablehq--string${n?" observablehq--expanded":""}`,a.textContent="`"+U(e)+"`",s}const o=document.createElement("span");r&&o.appendChild(i(r));const s=o.appendChild(document.createElement("span"));return s.className="observablehq--string",s.textContent=JSON.stringify(e.length>100?`${e.slice(0,50)}…${e.slice(-49)}`:e),o}(e,t,n,r);default:if(null===e){o=null,e="null";break}if(e instanceof Date){o="date",a=e,e=isNaN(a)?"Invalid Date":function(e){return 0===e.getUTCMilliseconds()&&0===e.getUTCSeconds()&&0===e.getUTCMinutes()&&0===e.getUTCHours()}(a)?A(a.getUTCFullYear())+"-"+j(a.getUTCMonth()+1,2)+"-"+j(a.getUTCDate(),2):A(a.getFullYear())+"-"+j(a.getMonth()+1,2)+"-"+j(a.getDate(),2)+"T"+j(a.getHours(),2)+":"+j(a.getMinutes(),2)+(a.getMilliseconds()?":"+j(a.getSeconds(),2)+"."+j(a.getMilliseconds(),3):a.getSeconds()?":"+j(a.getSeconds(),2):"");break}if(e===c){o="forbidden",e="[forbidden]";break}switch(G.call(e)){case"[object RegExp]":o="regexp",e=function(e){return M.call(e)}(e);break;case"[object Error]":case"[object DOMException]":o="error",e=function(e){return e.stack||O.call(e)}(e);break;default:return(n?m:C)(e,t,r)}}var a;const l=document.createElement("span");r&&l.appendChild(i(r));const u=l.appendChild(document.createElement("span"));return u.className=`observablehq--${o}`,u.textContent=e,l}function Y(e,n){e.classList.contains("observablehq--inspect")&&n.classList.add("observablehq--inspect"),e.parentNode.replaceChild(n,e),t(n,"load")}const X=/\s+\(\d+:\d+\)$/m;class K{constructor(e){if(!e)throw new Error("invalid node");this._node=e,e.classList.add("observablehq")}pending(){const{_node:e}=this;e.classList.remove("observablehq--error"),e.classList.add("observablehq--running")}fulfilled(e,n){const{_node:r}=this;if((!(e instanceof Element||e instanceof Text)||e.parentNode&&e.parentNode!==r)&&(e=J(e,!1,r.firstChild&&r.firstChild.classList&&r.firstChild.classList.contains("observablehq--expanded"),n)).classList.add("observablehq--inspect"),r.classList.remove("observablehq--running","observablehq--error"),r.firstChild!==e)if(r.firstChild){for(;r.lastChild!==r.firstChild;)r.removeChild(r.lastChild);r.replaceChild(e,r.firstChild)}else r.appendChild(e);t(r,"update")}rejected(e,n){const{_node:r}=this;for(r.classList.remove("observablehq--running"),r.classList.add("observablehq--error");r.lastChild;)r.removeChild(r.lastChild);var o=document.createElement("div");o.className="observablehq--inspect",n&&o.appendChild(i(n)),o.appendChild(document.createTextNode((e+"").replace(X,""))),r.appendChild(o),t(r,"error",{error:e})}}function Q(e){return function(){return e}}K.into=function(e){if("string"==typeof e&&null==(e=document.querySelector(e)))throw new Error("container not found");return function(){return new K(e.appendChild(document.createElement("div")))}};var Z={math:"http://www.w3.org/1998/Math/MathML",svg:"http://www.w3.org/2000/svg",xhtml:"http://www.w3.org/1999/xhtml",xlink:"http://www.w3.org/1999/xlink",xml:"http://www.w3.org/XML/1998/namespace",xmlns:"http://www.w3.org/2000/xmlns/"};var ee=0;function te(e){this.id=e,this.href=window.location.href+"#"+e}te.prototype.toString=function(){return"url("+this.href+")"};var ne={canvas:function(e,t){var n=document.createElement("canvas");return n.width=e,n.height=t,n},context2d:function(e,t,n){null==n&&(n=devicePixelRatio);var r=document.createElement("canvas");r.width=e*n,r.height=t*n,r.style.width=e+"px";var i=r.getContext("2d");return i.scale(n,n),i},download:function(e,t="untitled",n="Save"){const r=document.createElement("a"),i=r.appendChild(document.createElement("button"));async function o(){await new Promise(requestAnimationFrame),URL.revokeObjectURL(r.href),r.removeAttribute("href"),i.textContent=n,i.disabled=!1}return i.textContent=n,r.download=t,r.onclick=(async t=>{if(i.disabled=!0,r.href)return o();i.textContent="Saving…";try{const t=await("function"==typeof e?e():e);i.textContent="Download",r.href=URL.createObjectURL(t)}catch(e){i.textContent=n}if(t.eventPhase)return o();i.disabled=!1}),r},element:function(e,t){var n,r=e+="",i=r.indexOf(":");i>=0&&"xmlns"!==(r=e.slice(0,i))&&(e=e.slice(i+1));var o=Z.hasOwnProperty(r)?document.createElementNS(Z[r],e):document.createElement(e);if(t)for(var s in t)i=(r=s).indexOf(":"),n=t[s],i>=0&&"xmlns"!==(r=s.slice(0,i))&&(s=s.slice(i+1)),Z.hasOwnProperty(r)?o.setAttributeNS(Z[r],s,n):o.setAttribute(s,n);return o},input:function(e){var t=document.createElement("input");return null!=e&&(t.type=e),t},range:function(e,t,n){1===arguments.length&&(t=e,e=null);var r=document.createElement("input");return r.min=e=null==e?0:+e,r.max=t=null==t?1:+t,r.step=null==n?"any":n=+n,r.type="range",r},select:function(e){var t=document.createElement("select");return Array.prototype.forEach.call(e,function(e){var n=document.createElement("option");n.value=n.textContent=e,t.appendChild(n)}),t},svg:function(e,t){var n=document.createElementNS("http://www.w3.org/2000/svg","svg");return n.setAttribute("viewBox",[0,0,e,t]),n.setAttribute("width",e),n.setAttribute("height",t),n},text:function(e){return document.createTextNode(e)},uid:function(e){return new te("O-"+(null==e?"":e+"-")+ ++ee)}};var re={buffer:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsArrayBuffer(e)})},text:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsText(e)})},url:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsDataURL(e)})}};function ie(){return this}function oe(e,t){let n=!1;return{[Symbol.iterator]:ie,next:()=>n?{done:!0}:(n=!0,{done:!1,value:e}),return:()=>(n=!0,t(e),{done:!0}),throw:()=>({done:n=!0})}}function se(e){let t,n,r=!1;const i=e(function(e){n?(n(e),n=null):r=!0;return t=e});return{[Symbol.iterator]:ie,throw:()=>({done:!0}),return:()=>(null!=i&&i(),{done:!0}),next:function(){return{done:!1,value:r?(r=!1,Promise.resolve(t)):new Promise(e=>n=e)}}}}function ae(e){switch(e.type){case"range":case"number":return e.valueAsNumber;case"date":return e.valueAsDate;case"checkbox":return e.checked;case"file":return e.multiple?e.files:e.files[0];default:return e.value}}var le={disposable:oe,filter:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)t(n.value,++r)&&(yield n.value)},input:function(e){return se(function(t){var n=function(e){switch(e.type){case"button":case"submit":case"checkbox":return"click";case"file":return"change";default:return"input"}}(e),r=ae(e);function i(){t(ae(e))}return e.addEventListener(n,i),void 0!==r&&t(r),function(){e.removeEventListener(n,i)}})},map:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)yield t(n.value,++r)},observe:se,queue:function(e){let t;const n=[],r=e(function(e){return n.push(e),t&&(t(n.shift()),t=null),e});return{[Symbol.iterator]:ie,throw:()=>({done:!0}),return:()=>(null!=r&&r(),{done:!0}),next:function(){return{done:!1,value:n.length?Promise.resolve(n.shift()):new Promise(e=>t=e)}}}},range:function*(e,t,n){e=+e,t=+t,n=(i=arguments.length)<2?(t=e,e=0,1):i<3?1:+n;for(var r=-1,i=0|Math.max(0,Math.ceil((t-e)/n));++r<i;)yield e+r*n},valueAt:function(e,t){if(!(!isFinite(t=+t)||t<0||t!=t|0))for(var n,r=-1;!(n=e.next()).done;)if(++r===t)return n.value},worker:function(e){const t=URL.createObjectURL(new Blob([e],{type:"text/javascript"})),n=new Worker(t);return oe(n,()=>{n.terminate(),URL.revokeObjectURL(t)})}};function ue(e,t){return function(n){var r,i,o,s,a,l,u,c,d=n[0],h=[],p=null,f=-1;for(a=1,l=arguments.length;a<l;++a){if((r=arguments[a])instanceof Node)h[++f]=r,d+="\x3c!--o:"+f+"--\x3e";else if(Array.isArray(r)){for(u=0,c=r.length;u<c;++u)(i=r[u])instanceof Node?(null===p&&(h[++f]=p=document.createDocumentFragment(),d+="\x3c!--o:"+f+"--\x3e"),p.appendChild(i)):(p=null,d+=i);p=null}else d+=r;d+=n[a]}if(p=e(d),++f>0){for(o=new Array(f),s=document.createTreeWalker(p,NodeFilter.SHOW_COMMENT,null,!1);s.nextNode();)i=s.currentNode,/^o:/.test(i.nodeValue)&&(o[+i.nodeValue.slice(2)]=i);for(a=0;a<f;++a)(i=o[a])&&i.parentNode.replaceChild(h[a],i)}return 1===p.childNodes.length?p.removeChild(p.firstChild):11===p.nodeType?((i=t()).appendChild(p),i):p}}var ce=ue(function(e){var t=document.createElement("template");return t.innerHTML=e.trim(),document.importNode(t.content,!0)},function(){return document.createElement("span")}),de={newline:/^\n+/,code:/^( {4}[^\n]+\n*)+/,fences:xe,hr:/^( *[-*_]){3,} *(?:\n+|$)/,heading:/^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,nptable:xe,lheading:/^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,blockquote:/^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,list:/^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,html:/^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,def:/^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,table:xe,paragraph:/^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,text:/^[^\n]+/};function he(e){this.tokens=[],this.tokens.links={},this.options=e||Ce.defaults,this.rules=de.normal,this.options.gfm&&(this.options.tables?this.rules=de.tables:this.rules=de.gfm)}de.bullet=/(?:[*+-]|\d+\.)/,de.item=/^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/,de.item=ve(de.item,"gm")(/bull/g,de.bullet)(),de.list=ve(de.list)(/bull/g,de.bullet)("hr","\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))")("def","\\n+(?="+de.def.source+")")(),de.blockquote=ve(de.blockquote)("def",de.def)(),de._tag="(?!(?:a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b",de.html=ve(de.html)("comment",/<!--[\s\S]*?-->/)("closed",/<(tag)[\s\S]+?<\/\1>/)("closing",/<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)(/tag/g,de._tag)(),de.paragraph=ve(de.paragraph)("hr",de.hr)("heading",de.heading)("lheading",de.lheading)("blockquote",de.blockquote)("tag","<"+de._tag)("def",de.def)(),de.normal=ke({},de),de.gfm=ke({},de.normal,{fences:/^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,paragraph:/^/,heading:/^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/}),de.gfm.paragraph=ve(de.paragraph)("(?!","(?!"+de.gfm.fences.source.replace("\\1","\\2")+"|"+de.list.source.replace("\\1","\\3")+"|")(),de.tables=ke({},de.gfm,{nptable:/^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,table:/^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/}),he.rules=de,he.lex=function(e,t){return new he(t).lex(e)},he.prototype.lex=function(e){return e=e.replace(/\r\n|\r/g,"\n").replace(/\t/g," ").replace(/\u00a0/g," ").replace(/\u2424/g,"\n"),this.token(e,!0)},he.prototype.token=function(e,t,n){var r,i,o,s,a,l,u,c,d;for(e=e.replace(/^ +$/gm,"");e;)if((o=this.rules.newline.exec(e))&&(e=e.substring(o[0].length),o[0].length>1&&this.tokens.push({type:"space"})),o=this.rules.code.exec(e))e=e.substring(o[0].length),o=o[0].replace(/^ {4}/gm,""),this.tokens.push({type:"code",text:this.options.pedantic?o:o.replace(/\n+$/,"")});else if(o=this.rules.fences.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"code",lang:o[2],text:o[3]||""});else if(o=this.rules.heading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:o[1].length,text:o[2]});else if(t&&(o=this.rules.nptable.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].split(/ *\| */);this.tokens.push(l)}else if(o=this.rules.lheading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:"="===o[2]?1:2,text:o[1]});else if(o=this.rules.hr.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"hr"});else if(o=this.rules.blockquote.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"blockquote_start"}),o=o[0].replace(/^ *> ?/gm,""),this.token(o,t,!0),this.tokens.push({type:"blockquote_end"});else if(o=this.rules.list.exec(e)){for(e=e.substring(o[0].length),s=o[2],this.tokens.push({type:"list_start",ordered:s.length>1}),r=!1,d=(o=o[0].match(this.rules.item)).length,c=0;c<d;c++)u=(l=o[c]).length,~(l=l.replace(/^ *([*+-]|\d+\.) +/,"")).indexOf("\n ")&&(u-=l.length,l=this.options.pedantic?l.replace(/^ {1,4}/gm,""):l.replace(new RegExp("^ {1,"+u+"}","gm"),"")),this.options.smartLists&&c!==d-1&&(s===(a=de.bullet.exec(o[c+1])[0])||s.length>1&&a.length>1||(e=o.slice(c+1).join("\n")+e,c=d-1)),i=r||/\n\n(?!\s*$)/.test(l),c!==d-1&&(r="\n"===l.charAt(l.length-1),i||(i=r)),this.tokens.push({type:i?"loose_item_start":"list_item_start"}),this.token(l,!1,n),this.tokens.push({type:"list_item_end"});this.tokens.push({type:"list_end"})}else if(o=this.rules.html.exec(e))e=e.substring(o[0].length),this.tokens.push({type:this.options.sanitize?"paragraph":"html",pre:!this.options.sanitizer&&("pre"===o[1]||"script"===o[1]||"style"===o[1]),text:o[0]});else if(!n&&t&&(o=this.rules.def.exec(e)))e=e.substring(o[0].length),this.tokens.links[o[1].toLowerCase()]={href:o[2],title:o[3]};else if(t&&(o=this.rules.table.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/(?: *\| *)?\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].replace(/^ *\| *| *\| *$/g,"").split(/ *\| */);this.tokens.push(l)}else if(t&&(o=this.rules.paragraph.exec(e)))e=e.substring(o[0].length),this.tokens.push({type:"paragraph",text:"\n"===o[1].charAt(o[1].length-1)?o[1].slice(0,-1):o[1]});else if(o=this.rules.text.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"text",text:o[0]});else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0));return this.tokens};var pe={escape:/^\\([\\`*{}\[\]()#+\-.!_>])/,autolink:/^<([^ <>]+(@|:\/)[^ <>]+)>/,url:xe,tag:/^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^<'">])*?>/,link:/^!?\[(inside)\]\(href\)/,reflink:/^!?\[(inside)\]\s*\[([^\]]*)\]/,nolink:/^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,strong:/^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,em:/^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,code:/^(`+)([\s\S]*?[^`])\1(?!`)/,br:/^ {2,}\n(?!\s*$)/,del:xe,text:/^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/};function fe(e,t){if(this.options=t||Ce.defaults,this.links=e,this.rules=pe.normal,this.renderer=this.options.renderer||new me,this.renderer.options=this.options,!this.links)throw new Error("Tokens array requires a `links` property.");this.options.gfm?this.options.breaks?this.rules=pe.breaks:this.rules=pe.gfm:this.options.pedantic&&(this.rules=pe.pedantic)}function me(e){this.options=e||{}}function ge(e){this.tokens=[],this.token=null,this.options=e||Ce.defaults,this.options.renderer=this.options.renderer||new me,this.renderer=this.options.renderer,this.renderer.options=this.options}function be(e,t){return e.replace(t?/&/g:/&(?!#?\w+;)/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#39;")}function ve(e,t){return e=e.source,t=t||"",function n(r,i){return r?(i=(i=i.source||i).replace(/(^|[^\[])\^/g,"$1"),e=e.replace(r,i),n):new RegExp(e,t)}}function _e(e,t){return we[" "+e]||(/^[^:]+:\/*[^\/]*$/.test(e)?we[" "+e]=e+"/":we[" "+e]=e.replace(/[^\/]*$/,"")),e=we[" "+e],"//"===t.slice(0,2)?e.replace(/:[\s\S]*/,":")+t:"/"===t.charAt(0)?e.replace(/(:\/*[^\/]*)[\s\S]*/,"$1")+t:e+t}pe._inside=/(?:\[[^\]]*\]|\\[\[\]]|[^\[\]]|\](?=[^\[]*\]))*/,pe._href=/\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/,pe.link=ve(pe.link)("inside",pe._inside)("href",pe._href)(),pe.reflink=ve(pe.reflink)("inside",pe._inside)(),pe.normal=ke({},pe),pe.pedantic=ke({},pe.normal,{strong:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,em:/^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/}),pe.gfm=ke({},pe.normal,{escape:ve(pe.escape)("])","~|])")(),url:/^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,del:/^~~(?=\S)([\s\S]*?\S)~~/,text:ve(pe.text)("]|","~]|")("|","|https?://|")()}),pe.breaks=ke({},pe.gfm,{br:ve(pe.br)("{2,}","*")(),text:ve(pe.gfm.text)("{2,}","*")()}),fe.rules=pe,fe.output=function(e,t,n){return new fe(t,n).output(e)},fe.prototype.output=function(e){for(var t,n,r,i,o="";e;)if(i=this.rules.escape.exec(e))e=e.substring(i[0].length),o+=i[1];else if(i=this.rules.autolink.exec(e))e=e.substring(i[0].length),"@"===i[2]?(n=be(":"===i[1].charAt(6)?this.mangle(i[1].substring(7)):this.mangle(i[1])),r=this.mangle("mailto:")+n):r=n=be(i[1]),o+=this.renderer.link(r,null,n);else if(this.inLink||!(i=this.rules.url.exec(e))){if(i=this.rules.tag.exec(e))!this.inLink&&/^<a /i.test(i[0])?this.inLink=!0:this.inLink&&/^<\/a>/i.test(i[0])&&(this.inLink=!1),e=e.substring(i[0].length),o+=this.options.sanitize?this.options.sanitizer?this.options.sanitizer(i[0]):be(i[0]):i[0];else if(i=this.rules.link.exec(e))e=e.substring(i[0].length),this.inLink=!0,o+=this.outputLink(i,{href:i[2],title:i[3]}),this.inLink=!1;else if((i=this.rules.reflink.exec(e))||(i=this.rules.nolink.exec(e))){if(e=e.substring(i[0].length),t=(i[2]||i[1]).replace(/\s+/g," "),!(t=this.links[t.toLowerCase()])||!t.href){o+=i[0].charAt(0),e=i[0].substring(1)+e;continue}this.inLink=!0,o+=this.outputLink(i,t),this.inLink=!1}else if(i=this.rules.strong.exec(e))e=e.substring(i[0].length),o+=this.renderer.strong(this.output(i[2]||i[1]));else if(i=this.rules.em.exec(e))e=e.substring(i[0].length),o+=this.renderer.em(this.output(i[2]||i[1]));else if(i=this.rules.code.exec(e))e=e.substring(i[0].length),o+=this.renderer.codespan(be(i[2].trim(),!0));else if(i=this.rules.br.exec(e))e=e.substring(i[0].length),o+=this.renderer.br();else if(i=this.rules.del.exec(e))e=e.substring(i[0].length),o+=this.renderer.del(this.output(i[1]));else if(i=this.rules.text.exec(e))e=e.substring(i[0].length),o+=this.renderer.text(be(this.smartypants(i[0])));else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0))}else e=e.substring(i[0].length),r=n=be(i[1]),o+=this.renderer.link(r,null,n);return o},fe.prototype.outputLink=function(e,t){var n=be(t.href),r=t.title?be(t.title):null;return"!"!==e[0].charAt(0)?this.renderer.link(n,r,this.output(e[1])):this.renderer.image(n,r,be(e[1]))},fe.prototype.smartypants=function(e){return this.options.smartypants?e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014\/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014\/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…"):e},fe.prototype.mangle=function(e){if(!this.options.mangle)return e;for(var t,n="",r=e.length,i=0;i<r;i++)t=e.charCodeAt(i),Math.random()>.5&&(t="x"+t.toString(16)),n+="&#"+t+";";return n},me.prototype.code=function(e,t,n){if(this.options.highlight){var r=this.options.highlight(e,t);null!=r&&r!==e&&(n=!0,e=r)}return t?'<pre><code class="'+this.options.langPrefix+be(t,!0)+'">'+(n?e:be(e,!0))+"\n</code></pre>\n":"<pre><code>"+(n?e:be(e,!0))+"\n</code></pre>"},me.prototype.blockquote=function(e){return"<blockquote>\n"+e+"</blockquote>\n"},me.prototype.html=function(e){return e},me.prototype.heading=function(e,t,n){return"<h"+t+' id="'+this.options.headerPrefix+n.toLowerCase().replace(/[^\w]+/g,"-")+'">'+e+"</h"+t+">\n"},me.prototype.hr=function(){return this.options.xhtml?"<hr/>\n":"<hr>\n"},me.prototype.list=function(e,t){var n=t?"ol":"ul";return"<"+n+">\n"+e+"</"+n+">\n"},me.prototype.listitem=function(e){return"<li>"+e+"</li>\n"},me.prototype.paragraph=function(e){return"<p>"+e+"</p>\n"},me.prototype.table=function(e,t){return"<table>\n<thead>\n"+e+"</thead>\n<tbody>\n"+t+"</tbody>\n</table>\n"},me.prototype.tablerow=function(e){return"<tr>\n"+e+"</tr>\n"},me.prototype.tablecell=function(e,t){var n=t.header?"th":"td";return(t.align?"<"+n+' style="text-align:'+t.align+'">':"<"+n+">")+e+"</"+n+">\n"},me.prototype.strong=function(e){return"<strong>"+e+"</strong>"},me.prototype.em=function(e){return"<em>"+e+"</em>"},me.prototype.codespan=function(e){return"<code>"+e+"</code>"},me.prototype.br=function(){return this.options.xhtml?"<br/>":"<br>"},me.prototype.del=function(e){return"<del>"+e+"</del>"},me.prototype.link=function(e,t,n){if(this.options.sanitize){try{var r=decodeURIComponent((i=e,i.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/gi,function(e,t){return"colon"===(t=t.toLowerCase())?":":"#"===t.charAt(0)?"x"===t.charAt(1)?String.fromCharCode(parseInt(t.substring(2),16)):String.fromCharCode(+t.substring(1)):""}))).replace(/[^\w:]/g,"").toLowerCase()}catch(e){return n}if(0===r.indexOf("javascript:")||0===r.indexOf("vbscript:")||0===r.indexOf("data:"))return n}var i;this.options.baseUrl&&!ye.test(e)&&(e=_e(this.options.baseUrl,e));var o='<a href="'+e+'"';return t&&(o+=' title="'+t+'"'),o+=">"+n+"</a>"},me.prototype.image=function(e,t,n){this.options.baseUrl&&!ye.test(e)&&(e=_e(this.options.baseUrl,e));var r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">"},me.prototype.text=function(e){return e},ge.parse=function(e,t,n){return new ge(t,n).parse(e)},ge.prototype.parse=function(e){this.inline=new fe(e.links,this.options,this.renderer),this.tokens=e.reverse();for(var t="";this.next();)t+=this.tok();return t},ge.prototype.next=function(){return this.token=this.tokens.pop()},ge.prototype.peek=function(){return this.tokens[this.tokens.length-1]||0},ge.prototype.parseText=function(){for(var e=this.token.text;"text"===this.peek().type;)e+="\n"+this.next().text;return this.inline.output(e)},ge.prototype.tok=function(){switch(this.token.type){case"space":return"";case"hr":return this.renderer.hr();case"heading":return this.renderer.heading(this.inline.output(this.token.text),this.token.depth,this.token.text);case"code":return this.renderer.code(this.token.text,this.token.lang,this.token.escaped);case"table":var e,t,n,r,i="",o="";for(n="",e=0;e<this.token.header.length;e++)({header:!0,align:this.token.align[e]}),n+=this.renderer.tablecell(this.inline.output(this.token.header[e]),{header:!0,align:this.token.align[e]});for(i+=this.renderer.tablerow(n),e=0;e<this.token.cells.length;e++){for(t=this.token.cells[e],n="",r=0;r<t.length;r++)n+=this.renderer.tablecell(this.inline.output(t[r]),{header:!1,align:this.token.align[r]});o+=this.renderer.tablerow(n)}return this.renderer.table(i,o);case"blockquote_start":for(o="";"blockquote_end"!==this.next().type;)o+=this.tok();return this.renderer.blockquote(o);case"list_start":o="";for(var s=this.token.ordered;"list_end"!==this.next().type;)o+=this.tok();return this.renderer.list(o,s);case"list_item_start":for(o="";"list_item_end"!==this.next().type;)o+="text"===this.token.type?this.parseText():this.tok();return this.renderer.listitem(o);case"loose_item_start":for(o="";"list_item_end"!==this.next().type;)o+=this.tok();return this.renderer.listitem(o);case"html":var a=this.token.pre||this.options.pedantic?this.token.text:this.inline.output(this.token.text);return this.renderer.html(a);case"paragraph":return this.renderer.paragraph(this.inline.output(this.token.text));case"text":return this.renderer.paragraph(this.parseText())}};var we={},ye=/^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;function xe(){}function ke(e){for(var t,n,r=1;r<arguments.length;r++)for(n in t=arguments[r])Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n]);return e}function Ce(e,t,n){if(n||"function"==typeof t){n||(n=t,t=null);var r,i,o=(t=ke({},Ce.defaults,t||{})).highlight,s=0;try{r=he.lex(e,t)}catch(e){return n(e)}i=r.length;var a=function(e){if(e)return t.highlight=o,n(e);var i;try{i=ge.parse(r,t)}catch(t){e=t}return t.highlight=o,e?n(e):n(null,i)};if(!o||o.length<3)return a();if(delete t.highlight,!i)return a();for(;s<r.length;s++)!function(e){"code"!==e.type?--i||a():o(e.text,e.lang,function(t,n){return t?a(t):null==n||n===e.text?--i||a():(e.text=n,e.escaped=!0,void(--i||a()))})}(r[s])}else try{return t&&(t=ke({},Ce.defaults,t)),ge.parse(he.lex(e,t),t)}catch(e){if(e.message+="\nPlease report this to https://github.com/chjj/marked.",(t||Ce.defaults).silent)return"<p>An error occurred:</p><pre>"+be(e.message+"",!0)+"</pre>";throw e}}xe.exec=xe,Ce.options=Ce.setOptions=function(e){return ke(Ce.defaults,e),Ce},Ce.defaults={gfm:!0,tables:!0,breaks:!1,pedantic:!1,sanitize:!1,sanitizer:null,mangle:!0,smartLists:!1,silent:!1,highlight:null,langPrefix:"lang-",smartypants:!1,headerPrefix:"",renderer:new me,xhtml:!1,baseUrl:null},Ce.Parser=ge,Ce.parser=ge.parse,Ce.Renderer=me,Ce.Lexer=he,Ce.lexer=he.lex,Ce.InlineLexer=fe,Ce.inlineLexer=fe.output,Ce.parse=Ce;const Ee="https://cdn.jsdelivr.net/npm/@observablehq/highlight.js@2.0.0/";function Se(e){return function(){return ue(function(t){var n=document.createElement("div");n.innerHTML=Ce(t,{langPrefix:""}).trim();var r=n.querySelectorAll("pre code[class]");return r.length>0&&e(Ee+"highlight.min.js").then(function(t){r.forEach(function(n){function r(){t.highlightBlock(n),n.parentNode.classList.add("observablehq--md-pre")}t.getLanguage(n.className)?r():e(Ee+"async-languages/index.js").then(r=>{if(r.has(n.className))return e(Ee+"async-languages/"+r.get(n.className)).then(e=>{t.registerLanguage(n.className,e)})}).then(r,r)})}),n},function(){return document.createElement("div")})}}function $e(e){let t;Object.defineProperties(this,{generator:{value:se(e=>void(t=e))},value:{get:()=>e,set:n=>t(e=n)}}),void 0!==e&&t(e)}function*qe(){for(;;)yield Date.now()}var Ne=new Map;function Le(e,t){var n;return(n=Ne.get(e=+e))?n.then(Q(t)):(n=Date.now())>=e?Promise.resolve(t):function(e,t){var n=new Promise(function(n){Ne.delete(t);var r=t-e;if(!(r>0))throw new Error("invalid time");if(r>2147483647)throw new Error("too long to wait");setTimeout(n,r)});return Ne.set(t,n),n}(n,e).then(Q(t))}var Pe={delay:function(e,t){return new Promise(function(n){setTimeout(function(){n(t)},e)})},tick:function(e,t){return Le(Math.ceil((Date.now()+1)/e)*e,t)},when:Le};function je(e,t){if(/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new Error("illegal name");return"https://unpkg.com/"+e}const Ae=new Map,Oe=[],Me=Oe.map,Te=Oe.some,Ue=Oe.hasOwnProperty,Re="https://cdn.jsdelivr.net/npm/",ze=/^((?:@[^\/@]+\/)?[^\/@]+)(?:@([^\/]+))?(?:\/(.*))?$/,Fe=/^\d+\.\d+\.\d+(-[\w-.+]+)?$/,De=/\.[^\/]*$/,Ie=["unpkg","jsdelivr","browser","main"];class RequireError extends Error{constructor(e){super(e)}}function He(e){const t=ze.exec(e);return t&&{name:t[1],version:t[2],path:t[3]}}function We(e){const t=`${Re}${e.name}${e.version?`@${e.version}`:""}/package.json`;let n=Ae.get(t);return n||Ae.set(t,n=fetch(t).then(e=>{if(!e.ok)throw new RequireError("unable to load package.json");return e.redirected&&!Ae.has(e.url)&&Ae.set(e.url,n),e.json()})),n}RequireError.prototype.name=RequireError.name;const Be=Ve(async function(e,t){if(e.startsWith(Re)&&(e=e.substring(Re.length)),/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new RequireError("illegal name");const n=He(e);if(!n)return`${Re}${e}`;if(!n.version&&null!=t&&t.startsWith(Re)){const e=await We(He(t.substring(Re.length)));n.version=e.dependencies&&e.dependencies[n.name]||e.peerDependencies&&e.peerDependencies[n.name]}if(n.path&&!De.test(n.path)&&(n.path+=".js"),n.path&&n.version&&Fe.test(n.version))return`${Re}${n.name}@${n.version}/${n.path}`;const r=await We(n);return`${Re}${r.name}@${r.version}/${n.path||function(e){for(const t of Ie){const n=e[t];if("string"==typeof n)return De.test(n)?n:`${n}.js`}}(r)||"index.js"}`});function Ve(e){const t=new Map,n=i(null);function r(e){if("string"!=typeof e)return e;let n=t.get(e);return n||t.set(e,n=new Promise((t,n)=>{const r=document.createElement("script");r.onload=(()=>{try{t(Oe.pop()(i(e)))}catch(e){n(new RequireError("invalid module"))}r.remove()}),r.onerror=(()=>{n(new RequireError("unable to load module")),r.remove()}),r.async=!0,r.src=e,window.define=Xe,document.head.appendChild(r)})),n}function i(t){return n=>Promise.resolve(e(n,t)).then(r)}function o(e){return arguments.length>1?Promise.all(Me.call(arguments,n)).then(Ge):n(e)}return o.alias=function(t){return Ve((n,r)=>n in t&&(r=null,"string"!=typeof(n=t[n]))?n:e(n,r))},o.resolve=e,o}function Ge(e){const t={};for(const n of e)for(const e in n)Ue.call(n,e)&&(null==n[e]?Object.defineProperty(t,e,{get:Je(n,e)}):t[e]=n[e]);return t}function Je(e,t){return()=>e[t]}function Ye(e){return e+""=="exports"}function Xe(e,t,n){const r=arguments.length;r<2?(n=e,t=[]):r<3&&(n=t,t="string"==typeof e?[]:e),Oe.push(Te.call(t,Ye)?e=>{const r={};return Promise.all(Me.call(t,t=>Ye(t+="")?r:e(t))).then(e=>(n.apply(null,e),r))}:e=>Promise.all(Me.call(t,e)).then(e=>"function"==typeof n?n.apply(null,e):n))}function Ke(e){return null==e?Be:Ve(e)}Xe.amd={};var Qe=ue(function(e){var t=document.createElementNS("http://www.w3.org/2000/svg","g");return t.innerHTML=e.trim(),t},function(){return document.createElementNS("http://www.w3.org/2000/svg","g")}),Ze=String.raw;function et(e){return new Promise(function(t,n){var r=document.createElement("link");r.rel="stylesheet",r.href=e,r.onerror=n,r.onload=t,document.head.appendChild(r)})}function tt(e){return function(){return Promise.all([e("@observablehq/katex@0.10.1/dist/katex.min.js"),e.resolve("@observablehq/katex@0.10.1/dist/katex.min.css").then(et)]).then(function(e){var t=e[0],n=r();function r(e){return function(){var n=document.createElement("div");return t.render(Ze.apply(String,arguments),n,e),n.removeChild(n.firstChild)}}return n.options=r,n.block=r({displayMode:!0}),n})}}function nt(){return se(function(e){var t=e(document.body.clientWidth);function n(){var n=document.body.clientWidth;n!==t&&e(t=n)}return window.addEventListener("resize",n),function(){window.removeEventListener("resize",n)}})}function rt(e){const t=Ke(e);Object.defineProperties(this,{DOM:{value:ne,writable:!0,enumerable:!0},Files:{value:re,writable:!0,enumerable:!0},Generators:{value:le,writable:!0,enumerable:!0},html:{value:Q(ce),writable:!0,enumerable:!0},md:{value:Se(t),writable:!0,enumerable:!0},Mutable:{value:Q($e),writable:!0,enumerable:!0},now:{value:qe,writable:!0,enumerable:!0},Promises:{value:Pe,writable:!0,enumerable:!0},require:{value:Q(t),writable:!0,enumerable:!0},resolve:{value:Q(je),writable:!0,enumerable:!0},svg:{value:Q(Qe),writable:!0,enumerable:!0},tex:{value:tt(t),writable:!0,enumerable:!0},width:{value:nt,writable:!0,enumerable:!0}})}function it(e,t){this.message=e+"",this.input=t}it.prototype=Object.create(Error.prototype),it.prototype.name="RuntimeError",it.prototype.constructor=it;var ot=Array.prototype,st=ot.map,at=ot.forEach;function lt(e){return function(){return e}}function ut(e){return e}function ct(){}var dt=1,ht=2,pt=3,ft={};function mt(e,t,n){var r;null==n&&(n=ft),Object.defineProperties(this,{_observer:{value:n,writable:!0},_definition:{value:vt,writable:!0},_duplicate:{value:void 0,writable:!0},_duplicates:{value:void 0,writable:!0},_indegree:{value:-1,writable:!0},_inputs:{value:[],writable:!0},_invalidate:{value:ct,writable:!0},_module:{value:t},_name:{value:null,writable:!0},_outputs:{value:new Set,writable:!0},_promise:{value:Promise.resolve(void 0),writable:!0},_reachable:{value:n!==ft,writable:!0},_rejector:{value:(r=this,function(e){if(e===vt)throw new it(r._name+" is not defined",r._name);throw new it(r._name+" could not be resolved",r._name)})},_type:{value:e},_value:{value:void 0,writable:!0},_version:{value:0,writable:!0}})}function gt(e){e._module._runtime._dirty.add(e),e._outputs.add(this)}function bt(e){e._module._runtime._dirty.add(e),e._outputs.delete(this)}function vt(){throw vt}function _t(e){return function(){throw new it(e+" is defined more than once")}}function wt(e,t,n){var r=this._module._scope,i=this._module._runtime;if(this._inputs.forEach(bt,this),t.forEach(gt,this),this._inputs=t,this._definition=n,this._value=void 0,n===ct?i._variables.delete(this):i._variables.add(this),e==this._name&&r.get(e)===this)this._outputs.forEach(i._updates.add,i._updates);else{var o,s;if(this._name)if(this._outputs.size)r.delete(this._name),(s=this._module._resolve(this._name))._outputs=this._outputs,this._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(this)]=s},this),s._outputs.forEach(i._updates.add,i._updates),i._dirty.add(s).add(this),r.set(this._name,s);else if((s=r.get(this._name))===this)r.delete(this._name);else{if(s._type!==pt)throw new Error;s._duplicates.delete(this),this._duplicate=void 0,1===s._duplicates.size&&(s=s._duplicates.keys().next().value,o=r.get(this._name),s._outputs=o._outputs,o._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(o)]=s}),s._definition=s._duplicate,s._duplicate=void 0,i._dirty.add(o).add(s),i._updates.add(s),r.set(this._name,s))}if(this._outputs.size)throw new Error;e&&((s=r.get(e))?s._type===pt?(this._definition=_t(e),this._duplicate=n,s._duplicates.add(this)):s._type===ht?(this._outputs=s._outputs,s._outputs=new Set,this._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=this},this),i._dirty.add(s).add(this),r.set(e,this)):(s._duplicate=s._definition,this._duplicate=n,(o=new mt(pt,this._module))._name=e,o._definition=this._definition=s._definition=_t(e),o._outputs=s._outputs,s._outputs=new Set,o._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=o}),o._duplicates=new Set([this,s]),i._dirty.add(s).add(o),i._updates.add(s).add(o),r.set(e,o)):r.set(e,this)),this._name=e}return i._updates.add(this),i._compute(),this}Object.defineProperties(mt.prototype,{_pending:{value:function(){this._observer.pending&&this._observer.pending()},writable:!0,configurable:!0},_fulfilled:{value:function(e){this._observer.fulfilled&&this._observer.fulfilled(e,this._name)},writable:!0,configurable:!0},_rejected:{value:function(e){this._observer.rejected&&this._observer.rejected(e,this._name)},writable:!0,configurable:!0},define:{value:function(e,t,n){switch(arguments.length){case 1:n=e,e=t=null;break;case 2:n=t,"string"==typeof e?t=null:(t=e,e=null)}return wt.call(this,null==e?null:e+"",null==t?[]:st.call(t,this._module._resolve,this._module),"function"==typeof n?n:lt(n))},writable:!0,configurable:!0},delete:{value:function(){return wt.call(this,null,[],ct)},writable:!0,configurable:!0},import:{value:function(e,t,n){arguments.length<3&&(n=t,t=e);return wt.call(this,t+"",[n._resolve(e+"")],ut)},writable:!0,configurable:!0}});var yt=new Map;function xt(e){Object.defineProperties(this,{_runtime:{value:e},_scope:{value:new Map}})}function kt(e){return e._name}Object.defineProperties(xt.prototype,{_copy:{value:function(e,t,n){var r=new xt(this._runtime);return n.set(this,r),this._scope.forEach(function(i,o){var s,a=new mt(i._type,r);if(s=e.get(o))a.import(s.name,s.alias,t);else if(i._definition===ut){var l=i._inputs[0],u=l._module,c=n.get(u)||u._copy(yt,null,n);a.import(l._name,o,c)}else a.define(o,i._inputs.map(kt),i._definition)}),r},writable:!0,configurable:!0},_resolve:{value:function(e){var t,n=this._scope.get(e);if(!n)if(n=new mt(ht,this),this._runtime._builtin._scope.has(e))n.import(e,this._runtime._builtin);else if("invalidation"===e)n.define(e,Et);else if("visibility"===e)n.define(e,St);else{try{t=this._runtime._global(e)}catch(t){return n.define(e,(r=t,function(){throw r}))}void 0===t?this._scope.set(n._name=e,n):n.define(e,lt(t))}var r;return n},writable:!0,configurable:!0},redefine:{value:function(e){var t=this._scope.get(e);if(!t)throw new it(e+" is not defined");if(t._type===pt)throw new it(e+" is defined more than once");return t.define.apply(t,arguments)},writable:!0,configurable:!0},define:{value:function(){var e=new mt(dt,this);return e.define.apply(e,arguments)},writable:!0,configurable:!0},derive:{value:function(e,t){var n=new Map;return at.call(e,function(e){"object"!=typeof e&&(e={name:e+""}),null==e.alias&&(e.alias=e.name),n.set(e.alias,e)}),this._copy(n,t,new Map)},writable:!0,configurable:!0},import:{value:function(){var e=new mt(dt,this);return e.import.apply(e,arguments)},writable:!0,configurable:!0},value:{value:async function(e){var t=this._scope.get(e);if(!t)throw new it(e+" is not defined");t._observer===ft&&(t._observer=!0,this._runtime._dirty.add(t));return await this._runtime._compute(),t._promise},writable:!0,configurable:!0},variable:{value:function(e){return new mt(dt,this,e)},writable:!0,configurable:!0}});const Ct="function"==typeof requestAnimationFrame?requestAnimationFrame:setImmediate;var Et={},St={};function $t(e=new rt,t=function(e){return window[e]}){var n=this.module();if(Object.defineProperties(this,{_dirty:{value:new Set},_updates:{value:new Set},_computing:{value:null,writable:!0},_modules:{value:new Map},_variables:{value:new Set},_disposed:{value:!1,writable:!0},_builtin:{value:n},_global:{value:t}}),e)for(var r in e)new mt(ht,n).define(r,[],e[r])}function qt(e){++e._indegree}function Nt(e){return e._promise.catch(e._rejector)}function Lt(e){return new Promise(function(t){e._invalidate=t})}function Pt(e,t){let n,r,i="function"==typeof IntersectionObserver&&t._observer&&t._observer._node,o=!i,s=ct,a=ct;return i&&((r=new IntersectionObserver(([e])=>(o=e.isIntersecting)&&(n=null,s()))).observe(i),e.then(()=>(r.disconnect(),r=null,a()))),function(e){return o?Promise.resolve(e):r?(n||(n=new Promise((e,t)=>(s=e,a=t))),n.then(()=>e)):Promise.reject()}}function jt(e){e._invalidate(),e._invalidate=ct,e._pending();var t=e._value,n=++e._version,r=null,i=e._promise=Promise.all(e._inputs.map(Nt)).then(function(i){if(e._version===n){for(var o=0,s=i.length;o<s;++o)switch(i[o]){case Et:i[o]=r=Lt(e);break;case St:r||(r=Lt(e)),i[o]=Pt(r,e)}return e._definition.apply(t,i)}}).then(function(t){return function(e){return e&&"function"==typeof e.next&&"function"==typeof e.return}(t)?((r||Lt(e)).then((o=t,function(){o.return()})),function(e,t,n,r){function i(){var n=new Promise(function(e){e(r.next())}).then(function(r){return r.done?void 0:Promise.resolve(r.value).then(function(r){if(e._version===t)return At(e,r,n).then(i),e._fulfilled(r),r})});n.catch(function(r){e._version===t&&(At(e,void 0,n),e._rejected(r))})}return new Promise(function(e){e(r.next())}).then(function(e){if(!e.done)return n.then(i),e.value})}(e,n,i,t)):t;var o});i.then(function(t){e._version===n&&(e._value=t,e._fulfilled(t))},function(t){e._version===n&&(e._value=void 0,e._rejected(t))})}function At(e,t,n){var r=e._module._runtime;return e._value=t,e._promise=n,e._outputs.forEach(r._updates.add,r._updates),r._compute()}Object.defineProperties($t,{load:{value:function(e,t,n){if("function"==typeof t&&(n=t,t=null),"function"!=typeof n)throw new Error("invalid observer");null==t&&(t=new rt);const{modules:r,id:i}=e,o=new Map,s=new $t(t),a=l(i);function l(e){let t=o.get(e);return t||o.set(e,t=s.module()),t}for(const e of r){const t=l(e.id);let r=0;for(const i of e.variables)i.from?t.import(i.remote,i.name,l(i.from)):t===a?t.variable(n(i,r,e.variables)).define(i.name,i.inputs,i.value):t.define(i.name,i.inputs,i.value),++r}return s},writable:!0,configurable:!0}}),Object.defineProperties($t.prototype,{_compute:{value:function(){return this._computing||(this._computing=this._computeSoon())},writable:!0,configurable:!0},_computeSoon:{value:function(){var e=this;return new Promise(function(t){Ct(function(){t(),e._disposed||e._computeNow()})})},writable:!0,configurable:!0},_computeNow:{value:function(){var e,t,n=[];(e=new Set(this._dirty)).forEach(function(t){t._inputs.forEach(e.add,e);const n=function(e){if(e._observer!==ft)return!0;var t=new Set(e._outputs);for(const e of t){if(e._observer!==ft)return!0;e._outputs.forEach(t.add,t)}return!1}(t);n>t._reachable?this._updates.add(t):n<t._reachable&&t._invalidate(),t._reachable=n},this),(e=new Set(this._updates)).forEach(function(t){t._reachable?(t._indegree=0,t._outputs.forEach(e.add,e)):(t._indegree=-1,e.delete(t))}),this._computing=null,this._updates.clear(),this._dirty.clear(),e.forEach(function(e){e._outputs.forEach(qt)}),e.forEach(function(e){0===e._indegree&&n.push(e)});for(;t=n.pop();)jt(t),t._outputs.forEach(r),e.delete(t);function r(e){0==--e._indegree&&n.push(e)}e.forEach(function(e){var t=new it("circular definition");e._value=void 0,(e._promise=Promise.reject(t)).catch(ct),e._rejected(t)})},writable:!0,configurable:!0},dispose:{value:function(){this._computing=Promise.resolve(),this._disposed=!0,this._variables.forEach(e=>{e._invalidate(),e._version=NaN})},writable:!0,configurable:!0},module:{value:function(e,t=ct){if(void 0===e)return new xt(this);let n=this._modules.get(e);return n||(this._modules.set(e,n=e(this,t)),n)},writable:!0,configurable:!0}}),e.Inspector=K,e.Library=rt,e.Runtime=$t,e.RuntimeError=it,Object.defineProperty(e,"__esModule",{value:!0})});
// @observablehq/runtime v4.2.1 Copyright 2019 Observable, Inc.
!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(e.observablehq=e.observablehq||{})}(this,function(e){"use strict";function t(e,t,n){n=n||{};var r=e.ownerDocument,i=r.defaultView.CustomEvent;"function"==typeof i?i=new i(t,{detail:n}):((i=r.createEvent("Event")).initEvent(t,!1,!1),i.detail=n),e.dispatchEvent(i)}function n(e){return Array.isArray(e)||e instanceof Int8Array||e instanceof Int16Array||e instanceof Int32Array||e instanceof Uint8Array||e instanceof Uint8ClampedArray||e instanceof Uint16Array||e instanceof Uint32Array||e instanceof Float32Array||e instanceof Float64Array}function r(e){return e===(0|e)+""}function i(e){const t=document.createElement("span");return t.className="observablehq--cellname",t.textContent=`${e} = `,t}const o=Symbol.prototype.toString;function s(e){return o.call(e)}const{getOwnPropertySymbols:a,prototype:{hasOwnProperty:l}}=Object,{toStringTag:u}=Symbol,c={},d=a;function h(e,t){return l.call(e,t)}function p(e){return e[u]||e.constructor&&e.constructor.name||"Object"}function f(e,t){try{const n=e[t];return n&&n.constructor,n}catch(e){return c}}function m(e,r,o){const s=n(e);let a,l,u;e instanceof Map?(a=`Map(${e.size})`,l=g):e instanceof Set?(a=`Set(${e.size})`,l=b):s?(a=`${e.constructor.name}(${e.length})`,l=v):(a=p(e),l=_);const c=document.createElement("span");c.className="observablehq--expanded",o&&c.appendChild(i(o));const d=c.appendChild(document.createElement("a"));d.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M4 7L0 1h8z' fill='currentColor' />\n </svg>",d.appendChild(document.createTextNode(`${a}${s?" [":" {"}`)),d.addEventListener("mouseup",function(t){t.stopPropagation(),Y(c,C(e,null,o))}),l=l(e);for(let e=0;!(u=l.next()).done&&e<20;++e)c.appendChild(u.value);if(!u.done){const e=c.appendChild(document.createElement("a"));e.className="observablehq--field",e.style.display="block",e.appendChild(document.createTextNode(" … more")),e.addEventListener("mouseup",function(e){e.stopPropagation(),c.insertBefore(u.value,c.lastChild.previousSibling);for(let e=0;!(u=l.next()).done&&e<19;++e)c.insertBefore(u.value,c.lastChild.previousSibling);u.done&&c.removeChild(c.lastChild.previousSibling),t(c,"load")})}return c.appendChild(document.createTextNode(s?"]":"}")),c}function*g(e){for(const[t,n]of e)yield y(t,n);yield*_(e)}function*b(e){for(const t of e)yield x(t);yield*_(e)}function*v(e){for(let t=0,n=e.length;t<n;++t)t in e&&(yield w(t,f(e,t),"observablehq--index"));for(const t in e)!r(t)&&h(e,t)&&(yield w(t,f(e,t),"observablehq--key"));for(const t of d(e))yield w(s(t),f(e,t),"observablehq--symbol")}function*_(e){for(const t in e)h(e,t)&&(yield w(t,f(e,t),"observablehq--key"));for(const t of d(e))yield w(s(t),f(e,t),"observablehq--symbol")}function w(e,t,n){const r=document.createElement("div"),i=r.appendChild(document.createElement("span"));return r.className="observablehq--field",i.className=n,i.textContent=` ${e}`,r.appendChild(document.createTextNode(": ")),r.appendChild(J(t)),r}function y(e,t){const n=document.createElement("div");return n.className="observablehq--field",n.appendChild(document.createTextNode(" ")),n.appendChild(J(e)),n.appendChild(document.createTextNode(" => ")),n.appendChild(J(t)),n}function x(e){const t=document.createElement("div");return t.className="observablehq--field",t.appendChild(document.createTextNode(" ")),t.appendChild(J(e)),t}function k(e){const t=window.getSelection();return"Range"===t.type&&(t.containsNode(e,!0)||t.anchorNode.isSelfOrDescendant(e)||t.focusNode.isSelfOrDescendant(e))}function C(e,t,r){const o=n(e);let s,a,l;if(e instanceof Map?(s=`Map(${e.size})`,a=E):e instanceof Set?(s=`Set(${e.size})`,a=S):o?(s=`${e.constructor.name}(${e.length})`,a=$):(s=p(e),a=q),t){const t=document.createElement("span");return t.className="observablehq--shallow",r&&t.appendChild(i(r)),t.appendChild(document.createTextNode(s)),t.addEventListener("mouseup",function(n){k(t)||(n.stopPropagation(),Y(t,C(e)))}),t}const u=document.createElement("span");u.className="observablehq--collapsed",r&&u.appendChild(i(r));const c=u.appendChild(document.createElement("a"));c.innerHTML="<svg width=8 height=8 class='observablehq--caret'>\n <path d='M7 4L1 8V0z' fill='currentColor' />\n </svg>",c.appendChild(document.createTextNode(`${s}${o?" [":" {"}`)),u.addEventListener("mouseup",function(t){k(u)||(t.stopPropagation(),Y(u,m(e,0,r)))},!0),a=a(e);for(let e=0;!(l=a.next()).done&&e<20;++e)e>0&&u.appendChild(document.createTextNode(", ")),u.appendChild(l.value);return l.done||u.appendChild(document.createTextNode(", …")),u.appendChild(document.createTextNode(o?"]":"}")),u}function*E(e){for(const[t,n]of e)yield P(t,n);yield*q(e)}function*S(e){for(const t of e)yield J(t,!0);yield*q(e)}function*$(e){let t=-1,n=0;for(const r=e.length;n<r;++n)n in e&&(n>t+1&&(yield N(n-t-1)),yield J(f(e,n),!0),t=n);n>t+1&&(yield N(n-t-1));for(const t in e)!r(t)&&h(e,t)&&(yield L(t,f(e,t),"observablehq--key"));for(const t of d(e))yield L(s(t),f(e,t),"observablehq--symbol")}function*q(e){for(const t in e)h(e,t)&&(yield L(t,f(e,t),"observablehq--key"));for(const t of d(e))yield L(s(t),f(e,t),"observablehq--symbol")}function N(e){const t=document.createElement("span");return t.className="observablehq--empty",t.textContent=1===e?"empty":`empty × ${e}`,t}function L(e,t,n){const r=document.createDocumentFragment(),i=r.appendChild(document.createElement("span"));return i.className=n,i.textContent=e,r.appendChild(document.createTextNode(": ")),r.appendChild(J(t,!0)),r}function P(e,t){const n=document.createDocumentFragment();return n.appendChild(J(e,!0)),n.appendChild(document.createTextNode(" => ")),n.appendChild(J(t,!0)),n}function j(e,t){var n=e+"",r=n.length;return r<t?new Array(t-r+1).join(0)+n:n}function A(e){return e<0?"-"+j(-e,6):e>9999?"+"+j(e,6):j(e,4)}var O=Error.prototype.toString;var M=RegExp.prototype.toString;const T=20;function U(e){return e.replace(/[\\`\x00-\x09\x0b-\x19]|\${/g,R)}function R(e){var t=e.charCodeAt(0);switch(t){case 8:return"\\b";case 9:return"\\t";case 11:return"\\v";case 12:return"\\f";case 13:return"\\r"}return t<16?"\\x0"+t.toString(16):t<32?"\\x"+t.toString(16):"\\"+e}function z(e,t){for(var n=0;t.exec(e);)++n;return n}var F=Function.prototype.toString,D={prefix:"async ƒ"},I={prefix:"async ƒ*"},H={prefix:"class"},W={prefix:"ƒ"},B={prefix:"ƒ*"};function V(e,t,n){var r=document.createElement("span");r.className="observablehq--function",n&&r.appendChild(i(n));var o=r.appendChild(document.createElement("span"));return o.className="observablehq--keyword",o.textContent=e.prefix,r.appendChild(document.createTextNode(t)),r}const{prototype:{toString:G}}=Object;function J(e,t,n,r){let o=typeof e;switch(o){case"boolean":case"undefined":e+="";break;case"number":e=0===e&&1/e<0?"-0":e+"";break;case"bigint":e+="n";break;case"symbol":e=s(e);break;case"function":return function(e,t){var n,r,i=F.call(e);switch(e.constructor&&e.constructor.name){case"AsyncFunction":n=D;break;case"AsyncGeneratorFunction":n=I;break;case"GeneratorFunction":n=B;break;default:n=/^class\b/.test(i)?H:W}return n===H?V(n,"",t):(r=/^(?:async\s*)?(\w+)\s*=>/.exec(i))?V(n,"("+r[1]+")",t):(r=/^(?:async\s*)?\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?V(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):(r=/^(?:async\s*)?function(?:\s*\*)?(?:\s*\w+)?\s*\(\s*(\w+(?:\s*,\s*\w+)*)?\s*\)/.exec(i))?V(n,r[1]?"("+r[1].replace(/\s*,\s*/g,", ")+")":"()",t):V(n,"(…)",t)}(e,r);case"string":return function(e,t,n,r){if(!1===t){if(z(e,/["\n]/g)<=z(e,/`|\${/g)){const t=document.createElement("span");r&&t.appendChild(i(r));const n=t.appendChild(document.createElement("span"));return n.className="observablehq--string",n.textContent=JSON.stringify(e),t}const o=e.split("\n");if(o.length>T&&!n){const n=document.createElement("div");r&&n.appendChild(i(r));const s=n.appendChild(document.createElement("span"));s.className="observablehq--string",s.textContent="`"+U(o.slice(0,T).join("\n"));const a=n.appendChild(document.createElement("span")),l=o.length-T;return a.textContent=`Show ${l} truncated line${l>1?"s":""}`,a.className="observablehq--string-expand",a.addEventListener("mouseup",function(i){i.stopPropagation(),Y(n,J(e,t,!0,r))}),n}const s=document.createElement("span");r&&s.appendChild(i(r));const a=s.appendChild(document.createElement("span"));return a.className=`observablehq--string${n?" observablehq--expanded":""}`,a.textContent="`"+U(e)+"`",s}const o=document.createElement("span");r&&o.appendChild(i(r));const s=o.appendChild(document.createElement("span"));return s.className="observablehq--string",s.textContent=JSON.stringify(e.length>100?`${e.slice(0,50)}…${e.slice(-49)}`:e),o}(e,t,n,r);default:if(null===e){o=null,e="null";break}if(e instanceof Date){o="date",a=e,e=isNaN(a)?"Invalid Date":function(e){return 0===e.getUTCMilliseconds()&&0===e.getUTCSeconds()&&0===e.getUTCMinutes()&&0===e.getUTCHours()}(a)?A(a.getUTCFullYear())+"-"+j(a.getUTCMonth()+1,2)+"-"+j(a.getUTCDate(),2):A(a.getFullYear())+"-"+j(a.getMonth()+1,2)+"-"+j(a.getDate(),2)+"T"+j(a.getHours(),2)+":"+j(a.getMinutes(),2)+(a.getMilliseconds()?":"+j(a.getSeconds(),2)+"."+j(a.getMilliseconds(),3):a.getSeconds()?":"+j(a.getSeconds(),2):"");break}if(e===c){o="forbidden",e="[forbidden]";break}switch(G.call(e)){case"[object RegExp]":o="regexp",e=function(e){return M.call(e)}(e);break;case"[object Error]":case"[object DOMException]":o="error",e=function(e){return e.stack||O.call(e)}(e);break;default:return(n?m:C)(e,t,r)}}var a;const l=document.createElement("span");r&&l.appendChild(i(r));const u=l.appendChild(document.createElement("span"));return u.className=`observablehq--${o}`,u.textContent=e,l}function Y(e,n){e.classList.contains("observablehq--inspect")&&n.classList.add("observablehq--inspect"),e.parentNode.replaceChild(n,e),t(n,"load")}const X=/\s+\(\d+:\d+\)$/m;class K{constructor(e){if(!e)throw new Error("invalid node");this._node=e,e.classList.add("observablehq")}pending(){const{_node:e}=this;e.classList.remove("observablehq--error"),e.classList.add("observablehq--running")}fulfilled(e,n){const{_node:r}=this;if((!(e instanceof Element||e instanceof Text)||e.parentNode&&e.parentNode!==r)&&(e=J(e,!1,r.firstChild&&r.firstChild.classList&&r.firstChild.classList.contains("observablehq--expanded"),n)).classList.add("observablehq--inspect"),r.classList.remove("observablehq--running","observablehq--error"),r.firstChild!==e)if(r.firstChild){for(;r.lastChild!==r.firstChild;)r.removeChild(r.lastChild);r.replaceChild(e,r.firstChild)}else r.appendChild(e);t(r,"update")}rejected(e,n){const{_node:r}=this;for(r.classList.remove("observablehq--running"),r.classList.add("observablehq--error");r.lastChild;)r.removeChild(r.lastChild);var o=document.createElement("div");o.className="observablehq--inspect",n&&o.appendChild(i(n)),o.appendChild(document.createTextNode((e+"").replace(X,""))),r.appendChild(o),t(r,"error",{error:e})}}function Q(e){return function(){return e}}K.into=function(e){if("string"==typeof e&&null==(e=document.querySelector(e)))throw new Error("container not found");return function(){return new K(e.appendChild(document.createElement("div")))}};var Z={math:"http://www.w3.org/1998/Math/MathML",svg:"http://www.w3.org/2000/svg",xhtml:"http://www.w3.org/1999/xhtml",xlink:"http://www.w3.org/1999/xlink",xml:"http://www.w3.org/XML/1998/namespace",xmlns:"http://www.w3.org/2000/xmlns/"};var ee=0;function te(e){this.id=e,this.href=window.location.href+"#"+e}te.prototype.toString=function(){return"url("+this.href+")"};var ne={canvas:function(e,t){var n=document.createElement("canvas");return n.width=e,n.height=t,n},context2d:function(e,t,n){null==n&&(n=devicePixelRatio);var r=document.createElement("canvas");r.width=e*n,r.height=t*n,r.style.width=e+"px";var i=r.getContext("2d");return i.scale(n,n),i},download:function(e,t="untitled",n="Save"){const r=document.createElement("a"),i=r.appendChild(document.createElement("button"));async function o(){await new Promise(requestAnimationFrame),URL.revokeObjectURL(r.href),r.removeAttribute("href"),i.textContent=n,i.disabled=!1}return i.textContent=n,r.download=t,r.onclick=(async t=>{if(i.disabled=!0,r.href)return o();i.textContent="Saving…";try{const t=await("function"==typeof e?e():e);i.textContent="Download",r.href=URL.createObjectURL(t)}catch(e){i.textContent=n}if(t.eventPhase)return o();i.disabled=!1}),r},element:function(e,t){var n,r=e+="",i=r.indexOf(":");i>=0&&"xmlns"!==(r=e.slice(0,i))&&(e=e.slice(i+1));var o=Z.hasOwnProperty(r)?document.createElementNS(Z[r],e):document.createElement(e);if(t)for(var s in t)i=(r=s).indexOf(":"),n=t[s],i>=0&&"xmlns"!==(r=s.slice(0,i))&&(s=s.slice(i+1)),Z.hasOwnProperty(r)?o.setAttributeNS(Z[r],s,n):o.setAttribute(s,n);return o},input:function(e){var t=document.createElement("input");return null!=e&&(t.type=e),t},range:function(e,t,n){1===arguments.length&&(t=e,e=null);var r=document.createElement("input");return r.min=e=null==e?0:+e,r.max=t=null==t?1:+t,r.step=null==n?"any":n=+n,r.type="range",r},select:function(e){var t=document.createElement("select");return Array.prototype.forEach.call(e,function(e){var n=document.createElement("option");n.value=n.textContent=e,t.appendChild(n)}),t},svg:function(e,t){var n=document.createElementNS("http://www.w3.org/2000/svg","svg");return n.setAttribute("viewBox",[0,0,e,t]),n.setAttribute("width",e),n.setAttribute("height",t),n},text:function(e){return document.createTextNode(e)},uid:function(e){return new te("O-"+(null==e?"":e+"-")+ ++ee)}};var re={buffer:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsArrayBuffer(e)})},text:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsText(e)})},url:function(e){return new Promise(function(t,n){var r=new FileReader;r.onload=function(){t(r.result)},r.onerror=n,r.readAsDataURL(e)})}};function ie(){return this}function oe(e,t){let n=!1;return{[Symbol.iterator]:ie,next:()=>n?{done:!0}:(n=!0,{done:!1,value:e}),return:()=>(n=!0,t(e),{done:!0}),throw:()=>({done:n=!0})}}function se(e){let t,n,r=!1;const i=e(function(e){n?(n(e),n=null):r=!0;return t=e});return{[Symbol.iterator]:ie,throw:()=>({done:!0}),return:()=>(null!=i&&i(),{done:!0}),next:function(){return{done:!1,value:r?(r=!1,Promise.resolve(t)):new Promise(e=>n=e)}}}}function ae(e){switch(e.type){case"range":case"number":return e.valueAsNumber;case"date":return e.valueAsDate;case"checkbox":return e.checked;case"file":return e.multiple?e.files:e.files[0];default:return e.value}}var le={disposable:oe,filter:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)t(n.value,++r)&&(yield n.value)},input:function(e){return se(function(t){var n=function(e){switch(e.type){case"button":case"submit":case"checkbox":return"click";case"file":return"change";default:return"input"}}(e),r=ae(e);function i(){t(ae(e))}return e.addEventListener(n,i),void 0!==r&&t(r),function(){e.removeEventListener(n,i)}})},map:function*(e,t){for(var n,r=-1;!(n=e.next()).done;)yield t(n.value,++r)},observe:se,queue:function(e){let t;const n=[],r=e(function(e){return n.push(e),t&&(t(n.shift()),t=null),e});return{[Symbol.iterator]:ie,throw:()=>({done:!0}),return:()=>(null!=r&&r(),{done:!0}),next:function(){return{done:!1,value:n.length?Promise.resolve(n.shift()):new Promise(e=>t=e)}}}},range:function*(e,t,n){e=+e,t=+t,n=(i=arguments.length)<2?(t=e,e=0,1):i<3?1:+n;for(var r=-1,i=0|Math.max(0,Math.ceil((t-e)/n));++r<i;)yield e+r*n},valueAt:function(e,t){if(!(!isFinite(t=+t)||t<0||t!=t|0))for(var n,r=-1;!(n=e.next()).done;)if(++r===t)return n.value},worker:function(e){const t=URL.createObjectURL(new Blob([e],{type:"text/javascript"})),n=new Worker(t);return oe(n,()=>{n.terminate(),URL.revokeObjectURL(t)})}};function ue(e,t){return function(n){var r,i,o,s,a,l,u,c,d=n[0],h=[],p=null,f=-1;for(a=1,l=arguments.length;a<l;++a){if((r=arguments[a])instanceof Node)h[++f]=r,d+="\x3c!--o:"+f+"--\x3e";else if(Array.isArray(r)){for(u=0,c=r.length;u<c;++u)(i=r[u])instanceof Node?(null===p&&(h[++f]=p=document.createDocumentFragment(),d+="\x3c!--o:"+f+"--\x3e"),p.appendChild(i)):(p=null,d+=i);p=null}else d+=r;d+=n[a]}if(p=e(d),++f>0){for(o=new Array(f),s=document.createTreeWalker(p,NodeFilter.SHOW_COMMENT,null,!1);s.nextNode();)i=s.currentNode,/^o:/.test(i.nodeValue)&&(o[+i.nodeValue.slice(2)]=i);for(a=0;a<f;++a)(i=o[a])&&i.parentNode.replaceChild(h[a],i)}return 1===p.childNodes.length?p.removeChild(p.firstChild):11===p.nodeType?((i=t()).appendChild(p),i):p}}var ce=ue(function(e){var t=document.createElement("template");return t.innerHTML=e.trim(),document.importNode(t.content,!0)},function(){return document.createElement("span")}),de={newline:/^\n+/,code:/^( {4}[^\n]+\n*)+/,fences:xe,hr:/^( *[-*_]){3,} *(?:\n+|$)/,heading:/^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,nptable:xe,lheading:/^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,blockquote:/^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,list:/^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,html:/^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,def:/^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,table:xe,paragraph:/^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,text:/^[^\n]+/};function he(e){this.tokens=[],this.tokens.links={},this.options=e||Ce.defaults,this.rules=de.normal,this.options.gfm&&(this.options.tables?this.rules=de.tables:this.rules=de.gfm)}de.bullet=/(?:[*+-]|\d+\.)/,de.item=/^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/,de.item=ve(de.item,"gm")(/bull/g,de.bullet)(),de.list=ve(de.list)(/bull/g,de.bullet)("hr","\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))")("def","\\n+(?="+de.def.source+")")(),de.blockquote=ve(de.blockquote)("def",de.def)(),de._tag="(?!(?:a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b",de.html=ve(de.html)("comment",/<!--[\s\S]*?-->/)("closed",/<(tag)[\s\S]+?<\/\1>/)("closing",/<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)(/tag/g,de._tag)(),de.paragraph=ve(de.paragraph)("hr",de.hr)("heading",de.heading)("lheading",de.lheading)("blockquote",de.blockquote)("tag","<"+de._tag)("def",de.def)(),de.normal=ke({},de),de.gfm=ke({},de.normal,{fences:/^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,paragraph:/^/,heading:/^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/}),de.gfm.paragraph=ve(de.paragraph)("(?!","(?!"+de.gfm.fences.source.replace("\\1","\\2")+"|"+de.list.source.replace("\\1","\\3")+"|")(),de.tables=ke({},de.gfm,{nptable:/^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,table:/^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/}),he.rules=de,he.lex=function(e,t){return new he(t).lex(e)},he.prototype.lex=function(e){return e=e.replace(/\r\n|\r/g,"\n").replace(/\t/g," ").replace(/\u00a0/g," ").replace(/\u2424/g,"\n"),this.token(e,!0)},he.prototype.token=function(e,t,n){var r,i,o,s,a,l,u,c,d;for(e=e.replace(/^ +$/gm,"");e;)if((o=this.rules.newline.exec(e))&&(e=e.substring(o[0].length),o[0].length>1&&this.tokens.push({type:"space"})),o=this.rules.code.exec(e))e=e.substring(o[0].length),o=o[0].replace(/^ {4}/gm,""),this.tokens.push({type:"code",text:this.options.pedantic?o:o.replace(/\n+$/,"")});else if(o=this.rules.fences.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"code",lang:o[2],text:o[3]||""});else if(o=this.rules.heading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:o[1].length,text:o[2]});else if(t&&(o=this.rules.nptable.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].split(/ *\| */);this.tokens.push(l)}else if(o=this.rules.lheading.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"heading",depth:"="===o[2]?1:2,text:o[1]});else if(o=this.rules.hr.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"hr"});else if(o=this.rules.blockquote.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"blockquote_start"}),o=o[0].replace(/^ *> ?/gm,""),this.token(o,t,!0),this.tokens.push({type:"blockquote_end"});else if(o=this.rules.list.exec(e)){for(e=e.substring(o[0].length),s=o[2],this.tokens.push({type:"list_start",ordered:s.length>1}),r=!1,d=(o=o[0].match(this.rules.item)).length,c=0;c<d;c++)u=(l=o[c]).length,~(l=l.replace(/^ *([*+-]|\d+\.) +/,"")).indexOf("\n ")&&(u-=l.length,l=this.options.pedantic?l.replace(/^ {1,4}/gm,""):l.replace(new RegExp("^ {1,"+u+"}","gm"),"")),this.options.smartLists&&c!==d-1&&(s===(a=de.bullet.exec(o[c+1])[0])||s.length>1&&a.length>1||(e=o.slice(c+1).join("\n")+e,c=d-1)),i=r||/\n\n(?!\s*$)/.test(l),c!==d-1&&(r="\n"===l.charAt(l.length-1),i||(i=r)),this.tokens.push({type:i?"loose_item_start":"list_item_start"}),this.token(l,!1,n),this.tokens.push({type:"list_item_end"});this.tokens.push({type:"list_end"})}else if(o=this.rules.html.exec(e))e=e.substring(o[0].length),this.tokens.push({type:this.options.sanitize?"paragraph":"html",pre:!this.options.sanitizer&&("pre"===o[1]||"script"===o[1]||"style"===o[1]),text:o[0]});else if(!n&&t&&(o=this.rules.def.exec(e)))e=e.substring(o[0].length),this.tokens.links[o[1].toLowerCase()]={href:o[2],title:o[3]};else if(t&&(o=this.rules.table.exec(e))){for(e=e.substring(o[0].length),l={type:"table",header:o[1].replace(/^ *| *\| *$/g,"").split(/ *\| */),align:o[2].replace(/^ *|\| *$/g,"").split(/ *\| */),cells:o[3].replace(/(?: *\| *)?\n$/,"").split("\n")},c=0;c<l.align.length;c++)/^ *-+: *$/.test(l.align[c])?l.align[c]="right":/^ *:-+: *$/.test(l.align[c])?l.align[c]="center":/^ *:-+ *$/.test(l.align[c])?l.align[c]="left":l.align[c]=null;for(c=0;c<l.cells.length;c++)l.cells[c]=l.cells[c].replace(/^ *\| *| *\| *$/g,"").split(/ *\| */);this.tokens.push(l)}else if(t&&(o=this.rules.paragraph.exec(e)))e=e.substring(o[0].length),this.tokens.push({type:"paragraph",text:"\n"===o[1].charAt(o[1].length-1)?o[1].slice(0,-1):o[1]});else if(o=this.rules.text.exec(e))e=e.substring(o[0].length),this.tokens.push({type:"text",text:o[0]});else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0));return this.tokens};var pe={escape:/^\\([\\`*{}\[\]()#+\-.!_>])/,autolink:/^<([^ <>]+(@|:\/)[^ <>]+)>/,url:xe,tag:/^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^<'">])*?>/,link:/^!?\[(inside)\]\(href\)/,reflink:/^!?\[(inside)\]\s*\[([^\]]*)\]/,nolink:/^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,strong:/^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,em:/^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,code:/^(`+)([\s\S]*?[^`])\1(?!`)/,br:/^ {2,}\n(?!\s*$)/,del:xe,text:/^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/};function fe(e,t){if(this.options=t||Ce.defaults,this.links=e,this.rules=pe.normal,this.renderer=this.options.renderer||new me,this.renderer.options=this.options,!this.links)throw new Error("Tokens array requires a `links` property.");this.options.gfm?this.options.breaks?this.rules=pe.breaks:this.rules=pe.gfm:this.options.pedantic&&(this.rules=pe.pedantic)}function me(e){this.options=e||{}}function ge(e){this.tokens=[],this.token=null,this.options=e||Ce.defaults,this.options.renderer=this.options.renderer||new me,this.renderer=this.options.renderer,this.renderer.options=this.options}function be(e,t){return e.replace(t?/&/g:/&(?!#?\w+;)/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#39;")}function ve(e,t){return e=e.source,t=t||"",function n(r,i){return r?(i=(i=i.source||i).replace(/(^|[^\[])\^/g,"$1"),e=e.replace(r,i),n):new RegExp(e,t)}}function _e(e,t){return we[" "+e]||(/^[^:]+:\/*[^\/]*$/.test(e)?we[" "+e]=e+"/":we[" "+e]=e.replace(/[^\/]*$/,"")),e=we[" "+e],"//"===t.slice(0,2)?e.replace(/:[\s\S]*/,":")+t:"/"===t.charAt(0)?e.replace(/(:\/*[^\/]*)[\s\S]*/,"$1")+t:e+t}pe._inside=/(?:\[[^\]]*\]|\\[\[\]]|[^\[\]]|\](?=[^\[]*\]))*/,pe._href=/\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/,pe.link=ve(pe.link)("inside",pe._inside)("href",pe._href)(),pe.reflink=ve(pe.reflink)("inside",pe._inside)(),pe.normal=ke({},pe),pe.pedantic=ke({},pe.normal,{strong:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,em:/^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/}),pe.gfm=ke({},pe.normal,{escape:ve(pe.escape)("])","~|])")(),url:/^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,del:/^~~(?=\S)([\s\S]*?\S)~~/,text:ve(pe.text)("]|","~]|")("|","|https?://|")()}),pe.breaks=ke({},pe.gfm,{br:ve(pe.br)("{2,}","*")(),text:ve(pe.gfm.text)("{2,}","*")()}),fe.rules=pe,fe.output=function(e,t,n){return new fe(t,n).output(e)},fe.prototype.output=function(e){for(var t,n,r,i,o="";e;)if(i=this.rules.escape.exec(e))e=e.substring(i[0].length),o+=i[1];else if(i=this.rules.autolink.exec(e))e=e.substring(i[0].length),"@"===i[2]?(n=be(":"===i[1].charAt(6)?this.mangle(i[1].substring(7)):this.mangle(i[1])),r=this.mangle("mailto:")+n):r=n=be(i[1]),o+=this.renderer.link(r,null,n);else if(this.inLink||!(i=this.rules.url.exec(e))){if(i=this.rules.tag.exec(e))!this.inLink&&/^<a /i.test(i[0])?this.inLink=!0:this.inLink&&/^<\/a>/i.test(i[0])&&(this.inLink=!1),e=e.substring(i[0].length),o+=this.options.sanitize?this.options.sanitizer?this.options.sanitizer(i[0]):be(i[0]):i[0];else if(i=this.rules.link.exec(e))e=e.substring(i[0].length),this.inLink=!0,o+=this.outputLink(i,{href:i[2],title:i[3]}),this.inLink=!1;else if((i=this.rules.reflink.exec(e))||(i=this.rules.nolink.exec(e))){if(e=e.substring(i[0].length),t=(i[2]||i[1]).replace(/\s+/g," "),!(t=this.links[t.toLowerCase()])||!t.href){o+=i[0].charAt(0),e=i[0].substring(1)+e;continue}this.inLink=!0,o+=this.outputLink(i,t),this.inLink=!1}else if(i=this.rules.strong.exec(e))e=e.substring(i[0].length),o+=this.renderer.strong(this.output(i[2]||i[1]));else if(i=this.rules.em.exec(e))e=e.substring(i[0].length),o+=this.renderer.em(this.output(i[2]||i[1]));else if(i=this.rules.code.exec(e))e=e.substring(i[0].length),o+=this.renderer.codespan(be(i[2].trim(),!0));else if(i=this.rules.br.exec(e))e=e.substring(i[0].length),o+=this.renderer.br();else if(i=this.rules.del.exec(e))e=e.substring(i[0].length),o+=this.renderer.del(this.output(i[1]));else if(i=this.rules.text.exec(e))e=e.substring(i[0].length),o+=this.renderer.text(be(this.smartypants(i[0])));else if(e)throw new Error("Infinite loop on byte: "+e.charCodeAt(0))}else e=e.substring(i[0].length),r=n=be(i[1]),o+=this.renderer.link(r,null,n);return o},fe.prototype.outputLink=function(e,t){var n=be(t.href),r=t.title?be(t.title):null;return"!"!==e[0].charAt(0)?this.renderer.link(n,r,this.output(e[1])):this.renderer.image(n,r,be(e[1]))},fe.prototype.smartypants=function(e){return this.options.smartypants?e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014\/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014\/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…"):e},fe.prototype.mangle=function(e){if(!this.options.mangle)return e;for(var t,n="",r=e.length,i=0;i<r;i++)t=e.charCodeAt(i),Math.random()>.5&&(t="x"+t.toString(16)),n+="&#"+t+";";return n},me.prototype.code=function(e,t,n){if(this.options.highlight){var r=this.options.highlight(e,t);null!=r&&r!==e&&(n=!0,e=r)}return t?'<pre><code class="'+this.options.langPrefix+be(t,!0)+'">'+(n?e:be(e,!0))+"\n</code></pre>\n":"<pre><code>"+(n?e:be(e,!0))+"\n</code></pre>"},me.prototype.blockquote=function(e){return"<blockquote>\n"+e+"</blockquote>\n"},me.prototype.html=function(e){return e},me.prototype.heading=function(e,t,n){return"<h"+t+' id="'+this.options.headerPrefix+n.toLowerCase().replace(/[^\w]+/g,"-")+'">'+e+"</h"+t+">\n"},me.prototype.hr=function(){return this.options.xhtml?"<hr/>\n":"<hr>\n"},me.prototype.list=function(e,t){var n=t?"ol":"ul";return"<"+n+">\n"+e+"</"+n+">\n"},me.prototype.listitem=function(e){return"<li>"+e+"</li>\n"},me.prototype.paragraph=function(e){return"<p>"+e+"</p>\n"},me.prototype.table=function(e,t){return"<table>\n<thead>\n"+e+"</thead>\n<tbody>\n"+t+"</tbody>\n</table>\n"},me.prototype.tablerow=function(e){return"<tr>\n"+e+"</tr>\n"},me.prototype.tablecell=function(e,t){var n=t.header?"th":"td";return(t.align?"<"+n+' style="text-align:'+t.align+'">':"<"+n+">")+e+"</"+n+">\n"},me.prototype.strong=function(e){return"<strong>"+e+"</strong>"},me.prototype.em=function(e){return"<em>"+e+"</em>"},me.prototype.codespan=function(e){return"<code>"+e+"</code>"},me.prototype.br=function(){return this.options.xhtml?"<br/>":"<br>"},me.prototype.del=function(e){return"<del>"+e+"</del>"},me.prototype.link=function(e,t,n){if(this.options.sanitize){try{var r=decodeURIComponent((i=e,i.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/gi,function(e,t){return"colon"===(t=t.toLowerCase())?":":"#"===t.charAt(0)?"x"===t.charAt(1)?String.fromCharCode(parseInt(t.substring(2),16)):String.fromCharCode(+t.substring(1)):""}))).replace(/[^\w:]/g,"").toLowerCase()}catch(e){return n}if(0===r.indexOf("javascript:")||0===r.indexOf("vbscript:")||0===r.indexOf("data:"))return n}var i;this.options.baseUrl&&!ye.test(e)&&(e=_e(this.options.baseUrl,e));var o='<a href="'+e+'"';return t&&(o+=' title="'+t+'"'),o+=">"+n+"</a>"},me.prototype.image=function(e,t,n){this.options.baseUrl&&!ye.test(e)&&(e=_e(this.options.baseUrl,e));var r='<img src="'+e+'" alt="'+n+'"';return t&&(r+=' title="'+t+'"'),r+=this.options.xhtml?"/>":">"},me.prototype.text=function(e){return e},ge.parse=function(e,t,n){return new ge(t,n).parse(e)},ge.prototype.parse=function(e){this.inline=new fe(e.links,this.options,this.renderer),this.tokens=e.reverse();for(var t="";this.next();)t+=this.tok();return t},ge.prototype.next=function(){return this.token=this.tokens.pop()},ge.prototype.peek=function(){return this.tokens[this.tokens.length-1]||0},ge.prototype.parseText=function(){for(var e=this.token.text;"text"===this.peek().type;)e+="\n"+this.next().text;return this.inline.output(e)},ge.prototype.tok=function(){switch(this.token.type){case"space":return"";case"hr":return this.renderer.hr();case"heading":return this.renderer.heading(this.inline.output(this.token.text),this.token.depth,this.token.text);case"code":return this.renderer.code(this.token.text,this.token.lang,this.token.escaped);case"table":var e,t,n,r,i="",o="";for(n="",e=0;e<this.token.header.length;e++)({header:!0,align:this.token.align[e]}),n+=this.renderer.tablecell(this.inline.output(this.token.header[e]),{header:!0,align:this.token.align[e]});for(i+=this.renderer.tablerow(n),e=0;e<this.token.cells.length;e++){for(t=this.token.cells[e],n="",r=0;r<t.length;r++)n+=this.renderer.tablecell(this.inline.output(t[r]),{header:!1,align:this.token.align[r]});o+=this.renderer.tablerow(n)}return this.renderer.table(i,o);case"blockquote_start":for(o="";"blockquote_end"!==this.next().type;)o+=this.tok();return this.renderer.blockquote(o);case"list_start":o="";for(var s=this.token.ordered;"list_end"!==this.next().type;)o+=this.tok();return this.renderer.list(o,s);case"list_item_start":for(o="";"list_item_end"!==this.next().type;)o+="text"===this.token.type?this.parseText():this.tok();return this.renderer.listitem(o);case"loose_item_start":for(o="";"list_item_end"!==this.next().type;)o+=this.tok();return this.renderer.listitem(o);case"html":var a=this.token.pre||this.options.pedantic?this.token.text:this.inline.output(this.token.text);return this.renderer.html(a);case"paragraph":return this.renderer.paragraph(this.inline.output(this.token.text));case"text":return this.renderer.paragraph(this.parseText())}};var we={},ye=/^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;function xe(){}function ke(e){for(var t,n,r=1;r<arguments.length;r++)for(n in t=arguments[r])Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n]);return e}function Ce(e,t,n){if(n||"function"==typeof t){n||(n=t,t=null);var r,i,o=(t=ke({},Ce.defaults,t||{})).highlight,s=0;try{r=he.lex(e,t)}catch(e){return n(e)}i=r.length;var a=function(e){if(e)return t.highlight=o,n(e);var i;try{i=ge.parse(r,t)}catch(t){e=t}return t.highlight=o,e?n(e):n(null,i)};if(!o||o.length<3)return a();if(delete t.highlight,!i)return a();for(;s<r.length;s++)!function(e){"code"!==e.type?--i||a():o(e.text,e.lang,function(t,n){return t?a(t):null==n||n===e.text?--i||a():(e.text=n,e.escaped=!0,void(--i||a()))})}(r[s])}else try{return t&&(t=ke({},Ce.defaults,t)),ge.parse(he.lex(e,t),t)}catch(e){if(e.message+="\nPlease report this to https://github.com/chjj/marked.",(t||Ce.defaults).silent)return"<p>An error occurred:</p><pre>"+be(e.message+"",!0)+"</pre>";throw e}}xe.exec=xe,Ce.options=Ce.setOptions=function(e){return ke(Ce.defaults,e),Ce},Ce.defaults={gfm:!0,tables:!0,breaks:!1,pedantic:!1,sanitize:!1,sanitizer:null,mangle:!0,smartLists:!1,silent:!1,highlight:null,langPrefix:"lang-",smartypants:!1,headerPrefix:"",renderer:new me,xhtml:!1,baseUrl:null},Ce.Parser=ge,Ce.parser=ge.parse,Ce.Renderer=me,Ce.Lexer=he,Ce.lexer=he.lex,Ce.InlineLexer=fe,Ce.inlineLexer=fe.output,Ce.parse=Ce;const Ee="https://cdn.jsdelivr.net/npm/@observablehq/highlight.js@2.0.0/";function Se(e){return function(){return ue(function(t){var n=document.createElement("div");n.innerHTML=Ce(t,{langPrefix:""}).trim();var r=n.querySelectorAll("pre code[class]");return r.length>0&&e(Ee+"highlight.min.js").then(function(t){r.forEach(function(n){function r(){t.highlightBlock(n),n.parentNode.classList.add("observablehq--md-pre")}t.getLanguage(n.className)?r():e(Ee+"async-languages/index.js").then(r=>{if(r.has(n.className))return e(Ee+"async-languages/"+r.get(n.className)).then(e=>{t.registerLanguage(n.className,e)})}).then(r,r)})}),n},function(){return document.createElement("div")})}}function $e(e){let t;Object.defineProperties(this,{generator:{value:se(e=>void(t=e))},value:{get:()=>e,set:n=>t(e=n)}}),void 0!==e&&t(e)}function*qe(){for(;;)yield Date.now()}var Ne=new Map;function Le(e,t){var n;return(n=Ne.get(e=+e))?n.then(Q(t)):(n=Date.now())>=e?Promise.resolve(t):function(e,t){var n=new Promise(function(n){Ne.delete(t);var r=t-e;if(!(r>0))throw new Error("invalid time");if(r>2147483647)throw new Error("too long to wait");setTimeout(n,r)});return Ne.set(t,n),n}(n,e).then(Q(t))}var Pe={delay:function(e,t){return new Promise(function(n){setTimeout(function(){n(t)},e)})},tick:function(e,t){return Le(Math.ceil((Date.now()+1)/e)*e,t)},when:Le};function je(e,t){if(/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new Error("illegal name");return"https://unpkg.com/"+e}const Ae=new Map,Oe=[],Me=Oe.map,Te=Oe.some,Ue=Oe.hasOwnProperty,Re="https://cdn.jsdelivr.net/npm/",ze=/^((?:@[^\/@]+\/)?[^\/@]+)(?:@([^\/]+))?(?:\/(.*))?$/,Fe=/^\d+\.\d+\.\d+(-[\w-.+]+)?$/,De=/\.[^\/]*$/,Ie=["unpkg","jsdelivr","browser","main"];class RequireError extends Error{constructor(e){super(e)}}function He(e){const t=ze.exec(e);return t&&{name:t[1],version:t[2],path:t[3]}}function We(e){const t=`${Re}${e.name}${e.version?`@${e.version}`:""}/package.json`;let n=Ae.get(t);return n||Ae.set(t,n=fetch(t).then(e=>{if(!e.ok)throw new RequireError("unable to load package.json");return e.redirected&&!Ae.has(e.url)&&Ae.set(e.url,n),e.json()})),n}RequireError.prototype.name=RequireError.name;const Be=Ve(async function(e,t){if(e.startsWith(Re)&&(e=e.substring(Re.length)),/^(\w+:)|\/\//i.test(e))return e;if(/^[.]{0,2}\//i.test(e))return new URL(e,null==t?location:t).href;if(!e.length||/^[\s._]/.test(e)||/\s$/.test(e))throw new RequireError("illegal name");const n=He(e);if(!n)return`${Re}${e}`;if(!n.version&&null!=t&&t.startsWith(Re)){const e=await We(He(t.substring(Re.length)));n.version=e.dependencies&&e.dependencies[n.name]||e.peerDependencies&&e.peerDependencies[n.name]}if(n.path&&!De.test(n.path)&&(n.path+=".js"),n.path&&n.version&&Fe.test(n.version))return`${Re}${n.name}@${n.version}/${n.path}`;const r=await We(n);return`${Re}${r.name}@${r.version}/${n.path||function(e){for(const t of Ie){const n=e[t];if("string"==typeof n)return De.test(n)?n:`${n}.js`}}(r)||"index.js"}`});function Ve(e){const t=new Map,n=i(null);function r(e){if("string"!=typeof e)return e;let n=t.get(e);return n||t.set(e,n=new Promise((t,n)=>{const r=document.createElement("script");r.onload=(()=>{try{t(Oe.pop()(i(e)))}catch(e){n(new RequireError("invalid module"))}r.remove()}),r.onerror=(()=>{n(new RequireError("unable to load module")),r.remove()}),r.async=!0,r.src=e,window.define=Xe,document.head.appendChild(r)})),n}function i(t){return n=>Promise.resolve(e(n,t)).then(r)}function o(e){return arguments.length>1?Promise.all(Me.call(arguments,n)).then(Ge):n(e)}return o.alias=function(t){return Ve((n,r)=>n in t&&(r=null,"string"!=typeof(n=t[n]))?n:e(n,r))},o.resolve=e,o}function Ge(e){const t={};for(const n of e)for(const e in n)Ue.call(n,e)&&(null==n[e]?Object.defineProperty(t,e,{get:Je(n,e)}):t[e]=n[e]);return t}function Je(e,t){return()=>e[t]}function Ye(e){return e+""=="exports"}function Xe(e,t,n){const r=arguments.length;r<2?(n=e,t=[]):r<3&&(n=t,t="string"==typeof e?[]:e),Oe.push(Te.call(t,Ye)?e=>{const r={};return Promise.all(Me.call(t,t=>Ye(t+="")?r:e(t))).then(e=>(n.apply(null,e),r))}:e=>Promise.all(Me.call(t,e)).then(e=>"function"==typeof n?n.apply(null,e):n))}function Ke(e){return null==e?Be:Ve(e)}Xe.amd={};var Qe=ue(function(e){var t=document.createElementNS("http://www.w3.org/2000/svg","g");return t.innerHTML=e.trim(),t},function(){return document.createElementNS("http://www.w3.org/2000/svg","g")}),Ze=String.raw;function et(e){return new Promise(function(t,n){var r=document.createElement("link");r.rel="stylesheet",r.href=e,r.onerror=n,r.onload=t,document.head.appendChild(r)})}function tt(e){return function(){return Promise.all([e("@observablehq/katex@0.10.1/dist/katex.min.js"),e.resolve("@observablehq/katex@0.10.1/dist/katex.min.css").then(et)]).then(function(e){var t=e[0],n=r();function r(e){return function(){var n=document.createElement("div");return t.render(Ze.apply(String,arguments),n,e),n.removeChild(n.firstChild)}}return n.options=r,n.block=r({displayMode:!0}),n})}}function nt(){return se(function(e){var t=e(document.body.clientWidth);function n(){var n=document.body.clientWidth;n!==t&&e(t=n)}return window.addEventListener("resize",n),function(){window.removeEventListener("resize",n)}})}function rt(e){const t=Ke(e);Object.defineProperties(this,{DOM:{value:ne,writable:!0,enumerable:!0},Files:{value:re,writable:!0,enumerable:!0},Generators:{value:le,writable:!0,enumerable:!0},html:{value:Q(ce),writable:!0,enumerable:!0},md:{value:Se(t),writable:!0,enumerable:!0},Mutable:{value:Q($e),writable:!0,enumerable:!0},now:{value:qe,writable:!0,enumerable:!0},Promises:{value:Pe,writable:!0,enumerable:!0},require:{value:Q(t),writable:!0,enumerable:!0},resolve:{value:Q(je),writable:!0,enumerable:!0},svg:{value:Q(Qe),writable:!0,enumerable:!0},tex:{value:tt(t),writable:!0,enumerable:!0},width:{value:nt,writable:!0,enumerable:!0}})}function it(e,t){this.message=e+"",this.input=t}it.prototype=Object.create(Error.prototype),it.prototype.name="RuntimeError",it.prototype.constructor=it;var ot=Array.prototype,st=ot.map,at=ot.forEach;function lt(e){return function(){return e}}function ut(e){return e}function ct(){}var dt=1,ht=2,pt=3,ft={};function mt(e,t,n){var r;null==n&&(n=ft),Object.defineProperties(this,{_observer:{value:n,writable:!0},_definition:{value:vt,writable:!0},_duplicate:{value:void 0,writable:!0},_duplicates:{value:void 0,writable:!0},_indegree:{value:-1,writable:!0},_inputs:{value:[],writable:!0},_invalidate:{value:ct,writable:!0},_module:{value:t},_name:{value:null,writable:!0},_outputs:{value:new Set,writable:!0},_promise:{value:Promise.resolve(void 0),writable:!0},_reachable:{value:n!==ft,writable:!0},_rejector:{value:(r=this,function(e){if(e===vt)throw new it(r._name+" is not defined",r._name);throw new it(r._name+" could not be resolved",r._name)})},_type:{value:e},_value:{value:void 0,writable:!0},_version:{value:0,writable:!0}})}function gt(e){e._module._runtime._dirty.add(e),e._outputs.add(this)}function bt(e){e._module._runtime._dirty.add(e),e._outputs.delete(this)}function vt(){throw vt}function _t(e){return function(){throw new it(e+" is defined more than once")}}function wt(e,t,n){var r=this._module._scope,i=this._module._runtime;if(this._inputs.forEach(bt,this),t.forEach(gt,this),this._inputs=t,this._definition=n,this._value=void 0,n===ct?i._variables.delete(this):i._variables.add(this),e==this._name&&r.get(e)===this)this._outputs.forEach(i._updates.add,i._updates);else{var o,s;if(this._name)if(this._outputs.size)r.delete(this._name),(s=this._module._resolve(this._name))._outputs=this._outputs,this._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(this)]=s},this),s._outputs.forEach(i._updates.add,i._updates),i._dirty.add(s).add(this),r.set(this._name,s);else if((s=r.get(this._name))===this)r.delete(this._name);else{if(s._type!==pt)throw new Error;s._duplicates.delete(this),this._duplicate=void 0,1===s._duplicates.size&&(s=s._duplicates.keys().next().value,o=r.get(this._name),s._outputs=o._outputs,o._outputs=new Set,s._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(o)]=s}),s._definition=s._duplicate,s._duplicate=void 0,i._dirty.add(o).add(s),i._updates.add(s),r.set(this._name,s))}if(this._outputs.size)throw new Error;e&&((s=r.get(e))?s._type===pt?(this._definition=_t(e),this._duplicate=n,s._duplicates.add(this)):s._type===ht?(this._outputs=s._outputs,s._outputs=new Set,this._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=this},this),i._dirty.add(s).add(this),r.set(e,this)):(s._duplicate=s._definition,this._duplicate=n,(o=new mt(pt,this._module))._name=e,o._definition=this._definition=s._definition=_t(e),o._outputs=s._outputs,s._outputs=new Set,o._outputs.forEach(function(e){e._inputs[e._inputs.indexOf(s)]=o}),o._duplicates=new Set([this,s]),i._dirty.add(s).add(o),i._updates.add(s).add(o),r.set(e,o)):r.set(e,this)),this._name=e}return i._updates.add(this),i._compute(),this}Object.defineProperties(mt.prototype,{_pending:{value:function(){this._observer.pending&&this._observer.pending()},writable:!0,configurable:!0},_fulfilled:{value:function(e){this._observer.fulfilled&&this._observer.fulfilled(e,this._name)},writable:!0,configurable:!0},_rejected:{value:function(e){this._observer.rejected&&this._observer.rejected(e,this._name)},writable:!0,configurable:!0},define:{value:function(e,t,n){switch(arguments.length){case 1:n=e,e=t=null;break;case 2:n=t,"string"==typeof e?t=null:(t=e,e=null)}return wt.call(this,null==e?null:e+"",null==t?[]:st.call(t,this._module._resolve,this._module),"function"==typeof n?n:lt(n))},writable:!0,configurable:!0},delete:{value:function(){return wt.call(this,null,[],ct)},writable:!0,configurable:!0},import:{value:function(e,t,n){arguments.length<3&&(n=t,t=e);return wt.call(this,t+"",[n._resolve(e+"")],ut)},writable:!0,configurable:!0}});var yt=new Map;function xt(e){Object.defineProperties(this,{_runtime:{value:e},_scope:{value:new Map}})}function kt(e){return e._name}Object.defineProperties(xt.prototype,{_copy:{value:function(e,t,n){var r=new xt(this._runtime);return n.set(this,r),this._scope.forEach(function(i,o){var s,a=new mt(i._type,r);if(s=e.get(o))a.import(s.name,s.alias,t);else if(i._definition===ut){var l=i._inputs[0],u=l._module,c=n.get(u)||u._copy(yt,null,n);a.import(l._name,o,c)}else a.define(o,i._inputs.map(kt),i._definition)}),r},writable:!0,configurable:!0},_resolve:{value:function(e){var t,n=this._scope.get(e);if(!n)if(n=new mt(ht,this),this._runtime._builtin._scope.has(e))n.import(e,this._runtime._builtin);else if("invalidation"===e)n.define(e,Et);else if("visibility"===e)n.define(e,St);else{try{t=this._runtime._global(e)}catch(t){return n.define(e,(r=t,function(){throw r}))}void 0===t?this._scope.set(n._name=e,n):n.define(e,lt(t))}var r;return n},writable:!0,configurable:!0},redefine:{value:function(e){var t=this._scope.get(e);if(!t)throw new it(e+" is not defined");if(t._type===pt)throw new it(e+" is defined more than once");return t.define.apply(t,arguments)},writable:!0,configurable:!0},define:{value:function(){var e=new mt(dt,this);return e.define.apply(e,arguments)},writable:!0,configurable:!0},derive:{value:function(e,t){var n=new Map;return at.call(e,function(e){"object"!=typeof e&&(e={name:e+""}),null==e.alias&&(e.alias=e.name),n.set(e.alias,e)}),this._copy(n,t,new Map)},writable:!0,configurable:!0},import:{value:function(){var e=new mt(dt,this);return e.import.apply(e,arguments)},writable:!0,configurable:!0},value:{value:async function(e){var t=this._scope.get(e);if(!t)throw new it(e+" is not defined");t._observer===ft&&(t._observer=!0,this._runtime._dirty.add(t));return await this._runtime._compute(),t._promise},writable:!0,configurable:!0},variable:{value:function(e){return new mt(dt,this,e)},writable:!0,configurable:!0}});const Ct="function"==typeof requestAnimationFrame?requestAnimationFrame:setImmediate;var Et={},St={};function $t(e=new rt,t=function(e){return window[e]}){var n=this.module();if(Object.defineProperties(this,{_dirty:{value:new Set},_updates:{value:new Set},_computing:{value:null,writable:!0},_init:{value:null,writable:!0},_modules:{value:new Map},_variables:{value:new Set},_disposed:{value:!1,writable:!0},_builtin:{value:n},_global:{value:t}}),e)for(var r in e)new mt(ht,n).define(r,[],e[r])}function qt(e){++e._indegree}function Nt(e){return e._promise.catch(e._rejector)}function Lt(e){return new Promise(function(t){e._invalidate=t})}function Pt(e,t){let n,r,i="function"==typeof IntersectionObserver&&t._observer&&t._observer._node,o=!i,s=ct,a=ct;return i&&((r=new IntersectionObserver(([e])=>(o=e.isIntersecting)&&(n=null,s()))).observe(i),e.then(()=>(r.disconnect(),r=null,a()))),function(e){return o?Promise.resolve(e):r?(n||(n=new Promise((e,t)=>(s=e,a=t))),n.then(()=>e)):Promise.reject()}}function jt(e){e._invalidate(),e._invalidate=ct,e._pending();var t=e._value,n=++e._version,r=null,i=e._promise=Promise.all(e._inputs.map(Nt)).then(function(i){if(e._version===n){for(var o=0,s=i.length;o<s;++o)switch(i[o]){case Et:i[o]=r=Lt(e);break;case St:r||(r=Lt(e)),i[o]=Pt(r,e)}return e._definition.apply(t,i)}}).then(function(t){return function(e){return e&&"function"==typeof e.next&&"function"==typeof e.return}(t)?((r||Lt(e)).then((o=t,function(){o.return()})),function(e,t,n,r){function i(){var n=new Promise(function(e){e(r.next())}).then(function(r){return r.done?void 0:Promise.resolve(r.value).then(function(r){if(e._version===t)return At(e,r,n).then(i),e._fulfilled(r),r})});n.catch(function(r){e._version===t&&(At(e,void 0,n),e._rejected(r))})}return new Promise(function(e){e(r.next())}).then(function(e){if(!e.done)return n.then(i),e.value})}(e,n,i,t)):t;var o});i.then(function(t){e._version===n&&(e._value=t,e._fulfilled(t))},function(t){e._version===n&&(e._value=void 0,e._rejected(t))})}function At(e,t,n){var r=e._module._runtime;return e._value=t,e._promise=n,e._outputs.forEach(r._updates.add,r._updates),r._compute()}Object.defineProperties($t,{load:{value:function(e,t,n){if("function"==typeof t&&(n=t,t=null),"function"!=typeof n)throw new Error("invalid observer");null==t&&(t=new rt);const{modules:r,id:i}=e,o=new Map,s=new $t(t),a=l(i);function l(e){let t=o.get(e);return t||o.set(e,t=s.module()),t}for(const e of r){const t=l(e.id);let r=0;for(const i of e.variables)i.from?t.import(i.remote,i.name,l(i.from)):t===a?t.variable(n(i,r,e.variables)).define(i.name,i.inputs,i.value):t.define(i.name,i.inputs,i.value),++r}return s},writable:!0,configurable:!0}}),Object.defineProperties($t.prototype,{_compute:{value:function(){return this._computing||(this._computing=this._computeSoon())},writable:!0,configurable:!0},_computeSoon:{value:function(){var e=this;return new Promise(function(t){Ct(function(){t(),e._disposed||e._computeNow()})})},writable:!0,configurable:!0},_computeNow:{value:function(){var e,t,n=[];(e=new Set(this._dirty)).forEach(function(t){t._inputs.forEach(e.add,e);const n=function(e){if(e._observer!==ft)return!0;var t=new Set(e._outputs);for(const e of t){if(e._observer!==ft)return!0;e._outputs.forEach(t.add,t)}return!1}(t);n>t._reachable?this._updates.add(t):n<t._reachable&&t._invalidate(),t._reachable=n},this),(e=new Set(this._updates)).forEach(function(t){t._reachable?(t._indegree=0,t._outputs.forEach(e.add,e)):(t._indegree=-1,e.delete(t))}),this._computing=null,this._updates.clear(),this._dirty.clear(),e.forEach(function(e){e._outputs.forEach(qt)}),e.forEach(function(e){0===e._indegree&&n.push(e)});for(;t=n.pop();)jt(t),t._outputs.forEach(r),e.delete(t);function r(e){0==--e._indegree&&n.push(e)}e.forEach(function(e){var t=new it("circular definition");e._value=void 0,(e._promise=Promise.reject(t)).catch(ct),e._rejected(t)})},writable:!0,configurable:!0},dispose:{value:function(){this._computing=Promise.resolve(),this._disposed=!0,this._variables.forEach(e=>{e._invalidate(),e._version=NaN})},writable:!0,configurable:!0},module:{value:function(e,t=ct){let n;if(void 0===e)return(n=this._init)?(this._init=null,n):new xt(this);if(n=this._modules.get(e))return n;this._init=n=new xt(this),this._modules.set(e,n);try{e(this,t)}finally{this._init=null}return n},writable:!0,configurable:!0}}),e.Inspector=K,e.Library=rt,e.Runtime=$t,e.RuntimeError=it,Object.defineProperty(e,"__esModule",{value:!0})});

14

package.json
{
"name": "@observablehq/runtime",
"version": "4.2.0",
"version": "4.2.1",
"license": "ISC",

@@ -43,10 +43,10 @@ "main": "dist/runtime.umd.js",

"eslint": "^5.10.0",
"husky": "^1.2.0",
"jsdom": "^13.0.0",
"rollup": "^0.67.4",
"rollup-plugin-node-resolve": "^4.0.0",
"rollup-plugin-terser": "^3.0.0",
"husky": "^2.3.0",
"jsdom": "^15.1.0",
"rollup": "^1.12.3",
"rollup-plugin-node-resolve": "^5.0.0",
"rollup-plugin-terser": "^5.0.0",
"tape": "^4.9.1",
"tape-await": "0.1.1"
"tape-await": "0.1.2"
}
}

4

README.md
# @observablehq/runtime
[![CircleCI](https://circleci.com/gh/observablehq/runtime/tree/master.svg?style=svg&circle-token=765ad8079db8d24462864a9ed0ec5eab25404918)](https://circleci.com/gh/observablehq/runtime/tree/master)
[![CircleCI](https://circleci.com/gh/observablehq/runtime/tree/master.svg?style=svg&circle-token=765ad8079db8d24462864a9ed0ec5eab25404918)](https://circleci.com/gh/observablehq/runtime/tree/master) [![Greenkeeper badge](https://badges.greenkeeper.io/observablehq/runtime.svg)](https://greenkeeper.io/)

@@ -99,3 +99,3 @@ The [Observable runtime](https://observablehq.com/@observablehq/how-observable-runs) lets you run Observable notebooks as true reactive programs [in any JavaScript environment](https://observablehq.com/@observablehq/downloading-and-embedding-notebooks): on your personal website, integrated into your web application or interactive dashboard. Take your notebook to any distant shore the web platform reaches.

If *define* is specified, it is a function which defines the new module’s [variables](#variables). If this runtime already has a module for the specified *define* function, the existing module is returned; otherwise, a new module is created, and the *define* function is called, being passed this runtime and the specified *observer* factory function. If *define* is not specified, a new module is created and returned.
If *define* is specified, it is a function which defines the new module’s [variables](#variables) by calling *runtime*.module (with no arguments) and then calling [*module*.variable](#module_variable) on the returned module as desired. If this runtime already has a module for the specified *define* function, the existing module is returned; otherwise, a new module is created, and the *define* function is called, being passed this runtime and the specified *observer* factory function. If *define* is not specified, a new module is created and returned.

@@ -102,0 +102,0 @@ If an *observer* factory function is specified, it is called for each named variable in the returned module, being passed the variable’s name. The [standard inspector](#inspector) is available as a ready-made observer: it displays DOM elements “as-is” and renders interactive displays for other arbitrary values such as numbers and objects.

20

src/runtime.js

@@ -20,2 +20,3 @@ import {Library} from "@observablehq/stdlib";

_computing: {value: null, writable: true},
_init: {value: null, writable: true},
_modules: {value: new Map},

@@ -54,6 +55,19 @@ _variables: {value: new Set},

function runtime_module(define, observer = noop) {
if (define === undefined) return new Module(this);
let module = this._modules.get(define);
let module;
if (define === undefined) {
if (module = this._init) {
this._init = null;
return module;
}
return new Module(this);
}
module = this._modules.get(define);
if (module) return module;
this._modules.set(define, module = define(this, observer));
this._init = module = new Module(this);
this._modules.set(define, module);
try {
define(this, observer);
} finally {
this._init = null;
}
return module;

@@ -60,0 +74,0 @@ }

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap
  • Changelog

About

Packages

npm

Go

Maven

PyPI

Rubygems

Stay in touch

Get open source security insights delivered straight into your inbox.

  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc