markdown.js

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R={escape:/^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,autolink:/^<(scheme:[^\s\x00-\x1f<>]*|email)>/,url:w,tag:"^comment|^</[a-zA-Z][\\w:-]*\\s*>|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>|^<\\?[\\s\\S]*?\\?>|^<![a-zA-Z]+\\s[\\s\\S]*?>|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>",link:/^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,reflink:/^!?\[(label)\]\[(ref)\]/,nolink:/^!?\[(ref)\](?:\[\])?/,reflinkSearch:"reflink|nolink(?!\\()",emStrong:{lDelim:/^(?:\*+(?:([punct_])|[^\s*]))|^_+(?:([punct*])|([^\s_]))/,rDelimAst:/^(?:[^_*\\]|\\.)*?\_\_(?:[^_*\\]|\\.)*?\*(?:[^_*\\]|\\.)*?(?=\_\_)|(?:[^*\\]|\\.)+(?=[^*])|[punct_](\*+)(?=[\s]|$)|(?:[^punct*_\s\\]|\\.)(\*+)(?=[punct_\s]|$)|[punct_\s](\*+)(?=[^punct*_\s])|[\s](\*+)(?=[punct_])|[punct_](\*+)(?=[punct_])|(?:[^punct*_\s\\]|\\.)(\*+)(?=[^punct*_\s])/,rDelimUnd:/^(?:[^_*\\]|\\.)*?\*\*(?:[^_*\\]|\\.)*?\_(?:[^_*\\]|\\.)*?(?=\*\*)|(?:[^_\\]|\\.)+(?=[^_])|[punct*](\_+)(?=[\s]|$)|(?:[^punct*_\s\\]|\\.)(\_+)(?=[punct*\s]|$)|[punct*\s](\_+)(?=[^punct*_\s])|[\s](\_+)(?=[punct*])|[punct*](\_+)(?=[punct*])/},code:/^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,br:/^( {2,}|\\)\n(?!\s*$)/,del:w,text:/^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*_]|\b_|$)|[^ ](?= {2,}\n)))/,punctuation:/^([\spunctuation])/};function A(e){return e.replace(/---/g,"—").replace(/--/g,"–").replace(/(^|[-\u2014/(\[{"\s])'/g,"$1‘").replace(/'/g,"’").replace(/(^|[-\u2014/(\[{\u2018\s])"/g,"$1“").replace(/"/g,"”").replace(/\.{3}/g,"…")}function E(e){let t,n,s="";const r=e.length;for(t=0;t<r;t++)n=e.charCodeAt(t),Math.random()>.5&&(n="x"+n.toString(16)),s+="&#"+n+";";return s}R._punctuation="!\"#$%&'()+\\-.,/:;<=>?@\\[\\]`^{|}~",R.punctuation=u(R.punctuation).replace(/punctuation/g,R._punctuation).getRegex(),R.blockSkip=/\[[^\]]*?\]\([^\)]*?\)|`[^`]*?`|<[^>]*?>/g,R.escapedEmSt=/(?:^|[^\\])(?:\\\\)*\\[*_]/g,R._comment=u(T._comment).replace("(?:--\x3e|$)","--\x3e").getRegex(),R.emStrong.lDelim=u(R.emStrong.lDelim).replace(/punct/g,R._punctuation).getRegex(),R.emStrong.rDelimAst=u(R.emStrong.rDelimAst,"g").replace(/punct/g,R._punctuation).getRegex(),R.emStrong.rDelimUnd=u(R.emStrong.rDelimUnd,"g").replace(/punct/g,R._punctuation).getRegex(),R._escapes=/\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g,R._scheme=/[a-zA-Z][a-zA-Z0-9+.-]{1,31}/,R._email=/[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/,R.autolink=u(R.autolink).replace("scheme",R._scheme).replace("email",R._email).getRegex(),R._attribute=/\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/,R.tag=u(R.tag).replace("comment",R._comment).replace("attribute",R._attribute).getRegex(),R._label=/(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/,R._href=/<(?:\\.|[^\n<>\\])+>|[^\s\x00-\x1f]*/,R._title=/"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/,R.link=u(R.link).replace("label",R._label).replace("href",R._href).replace("title",R._title).getRegex(),R.reflink=u(R.reflink).replace("label",R._label).replace("ref",T._label).getRegex(),R.nolink=u(R.nolink).replace("ref",T._label).getRegex(),R.reflinkSearch=u(R.reflinkSearch,"g").replace("reflink",R.reflink).replace("nolink",R.nolink).getRegex(),R.normal={...R},R.pedantic={...R.normal,strong:{start:/^__|\*\*/,middle:/^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,endAst:/\*\*(?!\*)/g,endUnd:/__(?!_)/g},em:{start:/^_|\*/,middle:/^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,endAst:/\*(?!\*)/g,endUnd:/_(?!_)/g},link:u(/^!?\[(label)\]\((.*?)\)/).replace("label",R._label).getRegex(),reflink:u(/^!?\[(label)\]\s*\[([^\]]*)\]/).replace("label",R._label).getRegex()},R.gfm={...R.normal,escape:u(R.escape).replace("])","~|])").getRegex(),_extended_email:/[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,url:/^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,_backpedal:/(?:[^?!.,:;*_'"~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_'"~)]+(?!$))+/,del:/^(~~?)(?=[^\s~])([\s\S]*?[^\s~])\1(?=[^~]|$)/,text:/^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\<!\[`*~_]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)))/},R.gfm.url=u(R.gfm.url,"i").replace("email",R.gfm._extended_email).getRegex(),R.breaks={...R.gfm,br:u(R.br).replace("{2,}","*").getRegex(),text:u(R.gfm.text).replace("\\b_","\\b_| {2,}\\n").replace(/\{2,\}/g,"*").getRegex()};class v{constructor(e){this.tokens=[],this.tokens.links=Object.create(null),this.options=e||t,this.options.tokenizer=this.options.tokenizer||new S,this.tokenizer=this.options.tokenizer,this.tokenizer.options=this.options,this.tokenizer.lexer=this,this.inlineQueue=[],this.state={inLink:!1,inRawBlock:!1,top:!0};const n={block:T.normal,inline:R.normal};this.options.pedantic?(n.block=T.pedantic,n.inline=R.pedantic):this.options.gfm&&(n.block=T.gfm,this.options.breaks?n.inline=R.breaks:n.inline=R.gfm),this.tokenizer.rules=n}static get rules(){return{block:T,inline:R}}static lex(e,t){return new v(t).lex(e)}static lexInline(e,t){return new v(t).inlineTokens(e)}lex(e){let t;for(e=e.replace(/\r\n|\r/g,"\n"),this.blockTokens(e,this.tokens);t=this.inlineQueue.shift();)this.inlineTokens(t.src,t.tokens);return this.tokens}blockTokens(e,t=[]){let n,s,r,i;for(e=this.options.pedantic?e.replace(/\t/g,"    ").replace(/^ +$/gm,""):e.replace(/^( *)(\t+)/gm,((e,t,n)=>t+"    ".repeat(n.length)));e;)if(!(this.options.extensions&&this.options.extensions.block&&this.options.extensions.block.some((s=>!!(n=s.call({lexer:this},e,t))&&(e=e.substring(n.raw.length),t.push(n),!0)))))if(n=this.tokenizer.space(e))e=e.substring(n.raw.length),1===n.raw.length&&t.length>0?t[t.length-1].raw+="\n":t.push(n);else if(n=this.tokenizer.code(e))e=e.substring(n.raw.length),s=t[t.length-1],!s||"paragraph"!==s.type&&"text"!==s.type?t.push(n):(s.raw+="\n"+n.raw,s.text+="\n"+n.text,this.inlineQueue[this.inlineQueue.length-1].src=s.text);else if(n=this.tokenizer.fences(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.heading(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.hr(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.blockquote(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.list(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.html(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.def(e))e=e.substring(n.raw.length),s=t[t.length-1],!s||"paragraph"!==s.type&&"text"!==s.type?this.tokens.links[n.tag]||(this.tokens.links[n.tag]={href:n.href,title:n.title}):(s.raw+="\n"+n.raw,s.text+="\n"+n.raw,this.inlineQueue[this.inlineQueue.length-1].src=s.text);else if(n=this.tokenizer.table(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.lheading(e))e=e.substring(n.raw.length),t.push(n);else{if(r=e,this.options.extensions&&this.options.extensions.startBlock){let t=1/0;const n=e.slice(1);let s;this.options.extensions.startBlock.forEach((function(e){s=e.call({lexer:this},n),"number"==typeof s&&s>=0&&(t=Math.min(t,s))})),t<1/0&&t>=0&&(r=e.substring(0,t+1))}if(this.state.top&&(n=this.tokenizer.paragraph(r)))s=t[t.length-1],i&&"paragraph"===s.type?(s.raw+="\n"+n.raw,s.text+="\n"+n.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=s.text):t.push(n),i=r.length!==e.length,e=e.substring(n.raw.length);else if(n=this.tokenizer.text(e))e=e.substring(n.raw.length),s=t[t.length-1],s&&"text"===s.type?(s.raw+="\n"+n.raw,s.text+="\n"+n.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=s.text):t.push(n);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}return this.state.top=!0,t}inline(e,t=[]){return this.inlineQueue.push({src:e,tokens:t}),t}inlineTokens(e,t=[]){let n,s,r,i,l,o,a=e;if(this.tokens.links){const e=Object.keys(this.tokens.links);if(e.length>0)for(;null!=(i=this.tokenizer.rules.inline.reflinkSearch.exec(a));)e.includes(i[0].slice(i[0].lastIndexOf("[")+1,-1))&&(a=a.slice(0,i.index)+"["+$("a",i[0].length-2)+"]"+a.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex))}for(;null!=(i=this.tokenizer.rules.inline.blockSkip.exec(a));)a=a.slice(0,i.index)+"["+$("a",i[0].length-2)+"]"+a.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);for(;null!=(i=this.tokenizer.rules.inline.escapedEmSt.exec(a));)a=a.slice(0,i.index+i[0].length-2)+"++"+a.slice(this.tokenizer.rules.inline.escapedEmSt.lastIndex),this.tokenizer.rules.inline.escapedEmSt.lastIndex--;for(;e;)if(l||(o=""),l=!1,!(this.options.extensions&&this.options.extensions.inline&&this.options.extensions.inline.some((s=>!!(n=s.call({lexer:this},e,t))&&(e=e.substring(n.raw.length),t.push(n),!0)))))if(n=this.tokenizer.escape(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.tag(e))e=e.substring(n.raw.length),s=t[t.length-1],s&&"text"===n.type&&"text"===s.type?(s.raw+=n.raw,s.text+=n.text):t.push(n);else if(n=this.tokenizer.link(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.reflink(e,this.tokens.links))e=e.substring(n.raw.length),s=t[t.length-1],s&&"text"===n.type&&"text"===s.type?(s.raw+=n.raw,s.text+=n.text):t.push(n);else if(n=this.tokenizer.emStrong(e,a,o))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.codespan(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.br(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.del(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.autolink(e,E))e=e.substring(n.raw.length),t.push(n);else if(this.state.inLink||!(n=this.tokenizer.url(e,E))){if(r=e,this.options.extensions&&this.options.extensions.startInline){let t=1/0;const n=e.slice(1);let s;this.options.extensions.startInline.forEach((function(e){s=e.call({lexer:this},n),"number"==typeof s&&s>=0&&(t=Math.min(t,s))})),t<1/0&&t>=0&&(r=e.substring(0,t+1))}if(n=this.tokenizer.inlineText(r,A))e=e.substring(n.raw.length),"_"!==n.raw.slice(-1)&&(o=n.raw.slice(-1)),l=!0,s=t[t.length-1],s&&"text"===s.type?(s.raw+=n.raw,s.text+=n.text):t.push(n);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}else e=e.substring(n.raw.length),t.push(n);return t}}class I{constructor(e){this.options=e||t}code(e,t,n){const s=(t||"").match(/\S*/)[0];if(this.options.highlight){const t=this.options.highlight(e,s);null!=t&&t!==e&&(n=!0,e=t)}return e=e.replace(/\n$/,"")+"\n",s?'<pre><code class="'+this.options.langPrefix+a(s)+'">'+(n?e:a(e,!0))+"</code></pre>\n":"<pre><code>"+(n?e:a(e,!0))+"</code></pre>\n"}blockquote(e){return`<blockquote>\n${e}</blockquote>\n`}html(e){return e}heading(e,t,n,s){if(this.options.headerIds){return`<h${t} id="${this.options.headerPrefix+s.slug(n)}">${e}</h${t}>\n`}return`<h${t}>${e}</h${t}>\n`}hr(){return this.options.xhtml?"<hr/>\n":"<hr>\n"}list(e,t,n){const s=t?"ol":"ul";return"<"+s+(t&&1!==n?' start="'+n+'"':"")+">\n"+e+"</"+s+">\n"}listitem(e){return`<li>${e}</li>\n`}checkbox(e){return"<input "+(e?'checked="" ':"")+'disabled="" type="checkbox"'+(this.options.xhtml?" /":"")+"> "}paragraph(e){return`<p>${e}</p>\n`}table(e,t){return t&&(t=`<tbody>${t}</tbody>`),"<table>\n<thead>\n"+e+"</thead>\n"+t+"</table>\n"}tablerow(e){return`<tr>\n${e}</tr>\n`}tablecell(e,t){const n=t.header?"th":"td";return(t.align?`<${n} align="${t.align}">`:`<${n}>`)+e+`</${n}>\n`}strong(e){return`<strong>${e}</strong>`}em(e){return`<em>${e}</em>`}codespan(e){return`<code>${e}</code>`}br(){return this.options.xhtml?"<br/>":"<br>"}del(e){return`<del>${e}</del>`}link(e,t,n){if(null===(e=f(this.options.sanitize,this.options.baseUrl,e)))return n;let s='<a href="'+e+'"';return t&&(s+=' title="'+t+'"'),s+=">"+n+"</a>",s}image(e,t,n){if(null===(e=f(this.options.sanitize,this.options.baseUrl,e)))return n;let s=`<img src="${e}" alt="${n}"`;return t&&(s+=` title="${t}"`),s+=this.options.xhtml?"/>":">",s}text(e){return e}}class q{strong(e){return e}em(e){return e}codespan(e){return e}del(e){return e}html(e){return e}text(e){return e}link(e,t,n){return""+n}image(e,t,n){return""+n}br(){return""}}class L{constructor(){this.seen={}}serialize(e){return e.toLowerCase().trim().replace(/<[!\/a-z].*?>/gi,"").replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g,"").replace(/\s/g,"-")}getNextSafeSlug(e,t){let n=e,s=0;if(this.seen.hasOwnProperty(n)){s=this.seen[e];do{s++,n=e+"-"+s}while(this.seen.hasOwnProperty(n))}return t||(this.seen[e]=s,this.seen[n]=0),n}slug(e,t={}){const n=this.serialize(e);return this.getNextSafeSlug(n,t.dryrun)}}class C{constructor(e){this.options=e||t,this.options.renderer=this.options.renderer||new I,this.renderer=this.options.renderer,this.renderer.options=this.options,this.textRenderer=new q,this.slugger=new L}static parse(e,t){return new C(t).parse(e)}static parseInline(e,t){return new C(t).parseInline(e)}parse(e,t=!0){let n,s,r,i,l,o,a,c,p,u,g,d,f,k,x,m,b,w,y,_="";const $=e.length;for(n=0;n<$;n++)if(u=e[n],this.options.extensions&&this.options.extensions.renderers&&this.options.extensions.renderers[u.type]&&(y=this.options.extensions.renderers[u.type].call({parser:this},u),!1!==y||!["space","hr","heading","code","table","blockquote","list","html","paragraph","text"].includes(u.type)))_+=y||"";else switch(u.type){case"space":continue;case"hr":_+=this.renderer.hr();continue;case"heading":_+=this.renderer.heading(this.parseInline(u.tokens),u.depth,h(this.parseInline(u.tokens,this.textRenderer)),this.slugger);continue;case"code":_+=this.renderer.code(u.text,u.lang,u.escaped);continue;case"table":for(c="",a="",i=u.header.length,s=0;s<i;s++)a+=this.renderer.tablecell(this.parseInline(u.header[s].tokens),{header:!0,align:u.align[s]});for(c+=this.renderer.tablerow(a),p="",i=u.rows.length,s=0;s<i;s++){for(o=u.rows[s],a="",l=o.length,r=0;r<l;r++)a+=this.renderer.tablecell(this.parseInline(o[r].tokens),{header:!1,align:u.align[r]});p+=this.renderer.tablerow(a)}_+=this.renderer.table(c,p);continue;case"blockquote":p=this.parse(u.tokens),_+=this.renderer.blockquote(p);continue;case"list":for(g=u.ordered,d=u.start,f=u.loose,i=u.items.length,p="",s=0;s<i;s++)x=u.items[s],m=x.checked,b=x.task,k="",x.task&&(w=this.renderer.checkbox(m),f?x.tokens.length>0&&"paragraph"===x.tokens[0].type?(x.tokens[0].text=w+" "+x.tokens[0].text,x.tokens[0].tokens&&x.tokens[0].tokens.length>0&&"text"===x.tokens[0].tokens[0].type&&(x.tokens[0].tokens[0].text=w+" "+x.tokens[0].tokens[0].text)):x.tokens.unshift({type:"text",text:w}):k+=w),k+=this.parse(x.tokens,f),p+=this.renderer.listitem(k,b,m);_+=this.renderer.list(p,g,d);continue;case"html":_+=this.renderer.html(u.text);continue;case"paragraph":_+=this.renderer.paragraph(this.parseInline(u.tokens));continue;case"text":for(p=u.tokens?this.parseInline(u.tokens):u.text;n+1<$&&"text"===e[n+1].type;)u=e[++n],p+="\n"+(u.tokens?this.parseInline(u.tokens):u.text);_+=t?this.renderer.paragraph(p):p;continue;default:{const e='Token with "'+u.type+'" type was not found.';if(this.options.silent)return void console.error(e);throw new Error(e)}}return _}parseInline(e,t){t=t||this.renderer;let n,s,r,i="";const l=e.length;for(n=0;n<l;n++)if(s=e[n],this.options.extensions&&this.options.extensions.renderers&&this.options.extensions.renderers[s.type]&&(r=this.options.extensions.renderers[s.type].call({parser:this},s),!1!==r||!["escape","html","link","image","strong","em","codespan","br","del","text"].includes(s.type)))i+=r||"";else switch(s.type){case"escape":case"text":i+=t.text(s.text);break;case"html":i+=t.html(s.text);break;case"link":i+=t.link(s.href,s.title,this.parseInline(s.tokens,t));break;case"image":i+=t.image(s.href,s.title,s.text);break;case"strong":i+=t.strong(this.parseInline(s.tokens,t));break;case"em":i+=t.em(this.parseInline(s.tokens,t));break;case"codespan":i+=t.codespan(s.text);break;case"br":i+=t.br();break;case"del":i+=t.del(this.parseInline(s.tokens,t));break;default:{const e='Token with "'+s.type+'" type was not found.';if(this.options.silent)return void console.error(e);throw new Error(e)}}return i}}class Z{constructor(e){this.options=e||t}static passThroughHooks=new 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/*!
   * The reveal.js markdown plugin. Handles parsing of
   * markdown inside of presentations as well as loading
   * of external markdown documents.
   */
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