From 4fdde20b9e9aa93fa5a38aceb3f69666cb7fec80 Mon Sep 17 00:00:00 2001
From: John Hildenbiddle <jhildenbiddle@users.noreply.github.com>
Date: Tue, 15 Dec 2020 14:14:22 -0600
Subject: [PATCH] fix: Replace use of startsWith and endsWith with regex for
 IE11 (#1877)

fix #1876
---
 lib/marked.esm.js | 14 +++++++-------
 lib/marked.js     | 14 +++++++-------
 marked.min.js     |  2 +-
 src/Tokenizer.js  | 14 +++++++-------
 4 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/lib/marked.esm.js b/lib/marked.esm.js
index 1c5e891c08..79bed48b09 100644
--- a/lib/marked.esm.js
+++ b/lib/marked.esm.js
@@ -438,11 +438,11 @@ var Tokenizer_1 = class Tokenizer {
       let text = cap[2].trim();
 
       // remove trailing #s
-      if (text.endsWith('#')) {
+      if (/#$/.test(text)) {
         const trimmed = rtrim$1(text, '#');
         if (this.options.pedantic) {
           text = trimmed.trim();
-        } else if (!trimmed || trimmed.endsWith(' ')) {
+        } else if (!trimmed || / $/.test(trimmed)) {
           // CommonMark requires space before trailing #s
           text = trimmed.trim();
         }
@@ -785,9 +785,9 @@ var Tokenizer_1 = class Tokenizer {
     const cap = this.rules.inline.link.exec(src);
     if (cap) {
       const trimmedUrl = cap[2].trim();
-      if (!this.options.pedantic && trimmedUrl.startsWith('<')) {
+      if (!this.options.pedantic && /^</.test(trimmedUrl)) {
         // commonmark requires matching angle brackets
-        if (!trimmedUrl.endsWith('>')) {
+        if (!(/>$/.test(trimmedUrl))) {
           return;
         }
 
@@ -822,8 +822,8 @@ var Tokenizer_1 = class Tokenizer {
       }
 
       href = href.trim();
-      if (href.startsWith('<')) {
-        if (this.options.pedantic && !trimmedUrl.endsWith('>')) {
+      if (/^</.test(href)) {
+        if (this.options.pedantic && !(/>$/.test(trimmedUrl))) {
           // pedantic allows starting angle bracket without ending angle bracket
           href = href.slice(1);
         } else {
@@ -906,7 +906,7 @@ var Tokenizer_1 = class Tokenizer {
     if (cap) {
       let text = cap[2].replace(/\n/g, ' ');
       const hasNonSpaceChars = /[^ ]/.test(text);
-      const hasSpaceCharsOnBothEnds = text.startsWith(' ') && text.endsWith(' ');
+      const hasSpaceCharsOnBothEnds = /^ /.test(text) && / $/.test(text);
       if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
         text = text.substring(1, text.length - 1);
       }
diff --git a/lib/marked.js b/lib/marked.js
index bb0c6080e0..5231a38734 100644
--- a/lib/marked.js
+++ b/lib/marked.js
@@ -534,12 +534,12 @@
       if (cap) {
         var text = cap[2].trim(); // remove trailing #s
 
-        if (text.endsWith('#')) {
+        if (/#$/.test(text)) {
           var trimmed = rtrim$1(text, '#');
 
           if (this.options.pedantic) {
             text = trimmed.trim();
-          } else if (!trimmed || trimmed.endsWith(' ')) {
+          } else if (!trimmed || / $/.test(trimmed)) {
             // CommonMark requires space before trailing #s
             text = trimmed.trim();
           }
@@ -879,9 +879,9 @@
       if (cap) {
         var trimmedUrl = cap[2].trim();
 
-        if (!this.options.pedantic && trimmedUrl.startsWith('<')) {
+        if (!this.options.pedantic && /^</.test(trimmedUrl)) {
           // commonmark requires matching angle brackets
-          if (!trimmedUrl.endsWith('>')) {
+          if (!/>$/.test(trimmedUrl)) {
             return;
           } // ending angle bracket cannot be escaped
 
@@ -921,8 +921,8 @@
 
         href = href.trim();
 
-        if (href.startsWith('<')) {
-          if (this.options.pedantic && !trimmedUrl.endsWith('>')) {
+        if (/^</.test(href)) {
+          if (this.options.pedantic && !/>$/.test(trimmedUrl)) {
             // pedantic allows starting angle bracket without ending angle bracket
             href = href.slice(1);
           } else {
@@ -1017,7 +1017,7 @@
       if (cap) {
         var text = cap[2].replace(/\n/g, ' ');
         var hasNonSpaceChars = /[^ ]/.test(text);
-        var hasSpaceCharsOnBothEnds = text.startsWith(' ') && text.endsWith(' ');
+        var hasSpaceCharsOnBothEnds = /^ /.test(text) && / $/.test(text);
 
         if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
           text = text.substring(1, text.length - 1);
diff --git a/marked.min.js b/marked.min.js
index e7014e40e1..80c66b06d2 100644
--- a/marked.min.js
+++ b/marked.min.js
@@ -3,4 +3,4 @@
  * Copyright (c) 2011-2020, Christopher Jeffrey. (MIT Licensed)
  * https://github.com/markedjs/marked
  */
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if(r=this.tokenizer.heading(e))e=e.substring(r.raw.length),t.push(r);else if(r=this.tokenizer.nptable(e))e=e.substring(r.raw.length),t.push(r);else if(r=this.tokenizer.hr(e))e=e.substring(r.raw.length),t.push(r);else if(r=this.tokenizer.blockquote(e))e=e.substring(r.raw.length),r.tokens=this.blockTokens(r.text,[],n),t.push(r);else if(r=this.tokenizer.list(e)){for(e=e.substring(r.raw.length),s=r.items.length,i=0;i<s;i++)r.items[i].tokens=this.blockTokens(r.items[i].text,[],!1);t.push(r)}else if(r=this.tokenizer.html(e))e=e.substring(r.raw.length),t.push(r);else if(n&&(r=this.tokenizer.def(e)))e=e.substring(r.raw.length),this.tokens.links[r.tag]||(this.tokens.links[r.tag]={href:r.href,title:r.title});else if(r=this.tokenizer.table(e))e=e.substring(r.raw.length),t.push(r);else if(r=this.tokenizer.lheading(e))e=e.substring(r.raw.length),t.push(r);else if(n&&(r=this.tokenizer.paragraph(e)))e=e.substring(r.raw.length),t.push(r);else if(r=this.tokenizer.text(e,t))e=e.substring(r.raw.length),r.type?t.push(r):((l=t[t.length-1]).raw+="\n"+r.raw,l.text+="\n"+r.text);else if(e){var a="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(a);break}throw new Error(a)}return t},r.inline=function(e){for(var t,n,r,i,s,l=e.length,a=0;a<l;a++)switch((s=e[a]).type){case"paragraph":case"text":case"heading":s.tokens=[],this.inlineTokens(s.text,s.tokens);break;case"table":for(s.tokens={header:[],cells:[]},r=s.header.length,t=0;t<r;t++)s.tokens.header[t]=[],this.inlineTokens(s.header[t],s.tokens.header[t]);for(r=s.cells.length,t=0;t<r;t++)for(i=s.cells[t],s.tokens.cells[t]=[],n=0;n<i.length;n++)s.tokens.cells[t][n]=[],this.inlineTokens(i[n],s.tokens.cells[t][n]);break;case"blockquote":this.inline(s.tokens);break;case"list":for(r=s.items.length,t=0;t<r;t++)this.inline(s.items[t].tokens)}return e},r.inlineTokens=function(e,t,n,r){var i;void 0===t&&(t=[]),void 0===n&&(n=!1),void 0===r&&(r=!1);var s,l,a,o=e;if(this.tokens.links){var c=Object.keys(this.tokens.links);if(0<c.length)for(;null!=(s=this.tokenizer.rules.inline.reflinkSearch.exec(o));)c.includes(s[0].slice(s[0].lastIndexOf("[")+1,-1))&&(o=o.slice(0,s.index)+"["+B("a",s[0].length-2)+"]"+o.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex))}for(;null!=(s=this.tokenizer.rules.inline.blockSkip.exec(o));)o=o.slice(0,s.index)+"["+B("a",s[0].length-2)+"]"+o.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);for(;e;)if(l||(a=""),l=!1,i=this.tokenizer.escape(e))e=e.substring(i.raw.length),t.push(i);else if(i=this.tokenizer.tag(e,n,r))e=e.substring(i.raw.length),n=i.inLink,r=i.inRawBlock,t.push(i);else if(i=this.tokenizer.link(e))e=e.substring(i.raw.length),"link"===i.type&&(i.tokens=this.inlineTokens(i.text,[],!0,r)),t.push(i);else if(i=this.tokenizer.reflink(e,this.tokens.links))e=e.substring(i.raw.length),"link"===i.type&&(i.tokens=this.inlineTokens(i.text,[],!0,r)),t.push(i);else if(i=this.tokenizer.strong(e,o,a))e=e.substring(i.raw.length),i.tokens=this.inlineTokens(i.text,[],n,r),t.push(i);else if(i=this.tokenizer.em(e,o,a))e=e.substring(i.raw.length),i.tokens=this.inlineTokens(i.text,[],n,r),t.push(i);else if(i=this.tokenizer.codespan(e))e=e.substring(i.raw.length),t.push(i);else if(i=this.tokenizer.br(e))e=e.substring(i.raw.length),t.push(i);else if(i=this.tokenizer.del(e))e=e.substring(i.raw.length),i.tokens=this.inlineTokens(i.text,[],n,r),t.push(i);else if(i=this.tokenizer.autolink(e,M))e=e.substring(i.raw.length),t.push(i);else if(n||!(i=this.tokenizer.url(e,M))){if(i=this.tokenizer.inlineText(e,r,F))e=e.substring(i.raw.length),a=i.raw.slice(-1),l=!0,t.push(i);else if(e){var u="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(u);break}throw new Error(u)}}else e=e.substring(i.raw.length),t.push(i);return t},e=n,t=[{key:"rules",get:function(){return{block:L,inline:N}}}],(r=null)&&i(e.prototype,r),t&&i(e,t),n}(),G=t.defaults,V=S,H=_,J=function(){function e(e){this.options=e||G}var t=e.prototype;return t.code=function(e,t,n){var r=(t||"").match(/\S*/)[0];return!this.options.highlight||null!=(t=this.options.highlight(e,r))&&t!==e&&(n=!0,e=t),r?'<pre><code class="'+this.options.langPrefix+H(r,!0)+'">'+(n?e:H(e,!0))+"</code></pre>\n":"<pre><code>"+(n?e:H(e,!0))+"</code></pre>\n"},t.blockquote=function(e){return"<blockquote>\n"+e+"</blockquote>\n"},t.html=function(e){return e},t.heading=function(e,t,n,r){return this.options.headerIds?"<h"+t+' id="'+this.options.headerPrefix+r.slug(n)+'">'+e+"</h"+t+">\n":"<h"+t+">"+e+"</h"+t+">\n"},t.hr=function(){return this.options.xhtml?"<hr/>\n":"<hr>\n"},t.list=function(e,t,n){var r=t?"ol":"ul";return"<"+r+(t&&1!==n?' start="'+n+'"':"")+">\n"+e+"</"+r+">\n"},t.listitem=function(e){return"<li>"+e+"</li>\n"},t.checkbox=function(e){return"<input 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n(e){this.options=e||W,this.options.renderer=this.options.renderer||new J,this.renderer=this.options.renderer,this.renderer.options=this.options,this.textRenderer=new K,this.slugger=new Q}n.parse=function(e,t){return new n(t).parse(e)},n.parseInline=function(e,t){return new n(t).parseInline(e)};var e=n.prototype;return e.parse=function(e,t){void 0===t&&(t=!0);for(var n,r,i,s,l,a,o,c,u,p,h,g,f,d,k,b="",m=e.length,x=0;x<m;x++)switch((c=e[x]).type){case"space":continue;case"hr":b+=this.renderer.hr();continue;case"heading":b+=this.renderer.heading(this.parseInline(c.tokens),c.depth,Y(this.parseInline(c.tokens,this.textRenderer)),this.slugger);continue;case"code":b+=this.renderer.code(c.text,c.lang,c.escaped);continue;case"table":for(a=u="",i=c.header.length,n=0;n<i;n++)a+=this.renderer.tablecell(this.parseInline(c.tokens.header[n]),{header:!0,align:c.align[n]});for(u+=this.renderer.tablerow(a),o="",i=c.cells.length,n=0;n<i;n++){for(a="",s=(l=c.tokens.cells[n]).length,r=0;r<s;r++)a+=this.renderer.tablecell(this.parseInline(l[r]),{header:!1,align:c.align[r]});o+=this.renderer.tablerow(a)}b+=this.renderer.table(u,o);continue;case"blockquote":o=this.parse(c.tokens),b+=this.renderer.blockquote(o);continue;case"list":for(u=c.ordered,w=c.start,p=c.loose,i=c.items.length,o="",n=0;n<i;n++)f=(g=c.items[n]).checked,d=g.task,h="",g.task&&(k=this.renderer.checkbox(f),p?0<g.tokens.length&&"text"===g.tokens[0].type?(g.tokens[0].text=k+" "+g.tokens[0].text,g.tokens[0].tokens&&0<g.tokens[0].tokens.length&&"text"===g.tokens[0].tokens[0].type&&(g.tokens[0].tokens[0].text=k+" "+g.tokens[0].tokens[0].text)):g.tokens.unshift({type:"text",text:k}):h+=k),h+=this.parse(g.tokens,p),o+=this.renderer.listitem(h,d,f);b+=this.renderer.list(o,u,w);continue;case"html":b+=this.renderer.html(c.text);continue;case"paragraph":b+=this.renderer.paragraph(this.parseInline(c.tokens));continue;case"text":for(o=c.tokens?this.parseInline(c.tokens):c.text;x+1<m&&"text"===e[x+1].type;)o+="\n"+((c=e[++x]).tokens?this.parseInline(c.tokens):c.text);b+=t?this.renderer.paragraph(o):o;continue;default:var w='Token with "'+c.type+'" type was not found.';if(this.options.silent)return void console.error(w);throw new Error(w)}return b},e.parseInline=function(e,t){t=t||this.renderer;for(var n,r="",i=e.length,s=0;s<i;s++)switch((n=e[s]).type){case"escape":r+=t.text(n.text);break;case"html":r+=t.html(n.text);break;case"link":r+=t.link(n.href,n.title,this.parseInline(n.tokens,t));break;case"image":r+=t.image(n.href,n.title,n.text);break;case"strong":r+=t.strong(this.parseInline(n.tokens,t));break;case"em":r+=t.em(this.parseInline(n.tokens,t));break;case"codespan":r+=t.codespan(n.text);break;case"br":r+=t.br();break;case"del":r+=t.del(this.parseInline(n.tokens,t));break;case"text":r+=t.text(n.text);break;default:var l='Token with "'+n.type+'" type was not found.';if(this.options.silent)return void console.error(l);throw new Error(l)}return r},n}(),te=A,ne=I,re=_,_=t.getDefaults,ie=t.changeDefaults,t=t.defaults;function se(e,n,r){if(null==e)throw new Error("marked(): input parameter is undefined or null");if("string"!=typeof e)throw new Error("marked(): input parameter is of type "+Object.prototype.toString.call(e)+", string expected");if("function"==typeof n&&(r=n,n=null),n=te({},se.defaults,n||{}),ne(n),r){var i,s=n.highlight;try{i=X.lex(e,n)}catch(e){return r(e)}var l=function(t){var e;if(!t)try{e=ee.parse(i,n)}catch(e){t=e}return n.highlight=s,t?r(t):r(null,e)};if(!s||s.length<3)return l();if(delete n.highlight,!i.length)return l();var a=0;return se.walkTokens(i,function(n){"code"===n.type&&(a++,setTimeout(function(){s(n.text,n.lang,function(e,t){return e?l(e):(null!=t&&t!==n.text&&(n.text=t,n.escaped=!0),void(0===--a&&l()))})},0))}),void(0===a&&l())}try{var t=X.lex(e,n);return n.walkTokens&&se.walkTokens(t,n.walkTokens),ee.parse(t,n)}catch(e){if(e.message+="\nPlease report this to https://github.com/markedjs/marked.",n.silent)return"<p>An error occurred:</p><pre>"+re(e.message+"",!0)+"</pre>";throw e}}return se.options=se.setOptions=function(e){return te(se.defaults,e),ie(se.defaults),se},se.getDefaults=_,se.defaults=t,se.use=function(a){var t,n=te({},a);a.renderer&&function(){var e,l=se.defaults.renderer||new J;for(e in a.renderer)!function(i){var s=l[i];l[i]=function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];var r=a.renderer[i].apply(l,t);return!1===r&&(r=s.apply(l,t)),r}}(e);n.renderer=l}(),a.tokenizer&&function(){var e,l=se.defaults.tokenizer||new D;for(e in a.tokenizer)!function(i){var s=l[i];l[i]=function(){for(var e=arguments.length,t=new Array(e),n=0;n<e;n++)t[n]=arguments[n];var r=a.tokenizer[i].apply(l,t);return!1===r&&(r=s.apply(l,t)),r}}(e);n.tokenizer=l}(),a.walkTokens&&(t=se.defaults.walkTokens,n.walkTokens=function(e){a.walkTokens(e),t&&t(e)}),se.setOptions(n)},se.walkTokens=function(e,t){for(var n,r=p(e);!(n=r()).done;){var i=n.value;switch(t(i),i.type){case"table":for(var s=p(i.tokens.header);!(l=s()).done;){var l=l.value;se.walkTokens(l,t)}for(var a,o=p(i.tokens.cells);!(a=o()).done;)for(var c=p(a.value);!(u=c()).done;){var u=u.value;se.walkTokens(u,t)}break;case"list":se.walkTokens(i.items,t);break;default:i.tokens&&se.walkTokens(i.tokens,t)}}},se.parseInline=function(e,t){if(null==e)throw new Error("marked.parseInline(): input parameter is undefined or null");if("string"!=typeof e)throw new Error("marked.parseInline(): input parameter is of type "+Object.prototype.toString.call(e)+", string expected");t=te({},se.defaults,t||{}),ne(t);try{var n=X.lexInline(e,t);return t.walkTokens&&se.walkTokens(n,t.walkTokens),ee.parseInline(n,t)}catch(e){if(e.message+="\nPlease report this to https://github.com/markedjs/marked.",t.silent)return"<p>An error occurred:</p><pre>"+re(e.message+"",!0)+"</pre>";throw e}},se.Parser=ee,se.parser=ee.parse,se.Renderer=J,se.TextRenderer=K,se.Lexer=X,se.lexer=X.lex,se.Tokenizer=D,se.Slugger=Q,se.parse=se});
\ No newline at end of file
diff --git a/src/Tokenizer.js b/src/Tokenizer.js
index d78202fac1..cb2a275a22 100644
--- a/src/Tokenizer.js
+++ b/src/Tokenizer.js
@@ -124,11 +124,11 @@ module.exports = class Tokenizer {
       let text = cap[2].trim();
 
       // remove trailing #s
-      if (text.endsWith('#')) {
+      if (/#$/.test(text)) {
         const trimmed = rtrim(text, '#');
         if (this.options.pedantic) {
           text = trimmed.trim();
-        } else if (!trimmed || trimmed.endsWith(' ')) {
+        } else if (!trimmed || / $/.test(trimmed)) {
           // CommonMark requires space before trailing #s
           text = trimmed.trim();
         }
@@ -471,9 +471,9 @@ module.exports = class Tokenizer {
     const cap = this.rules.inline.link.exec(src);
     if (cap) {
       const trimmedUrl = cap[2].trim();
-      if (!this.options.pedantic && trimmedUrl.startsWith('<')) {
+      if (!this.options.pedantic && /^</.test(trimmedUrl)) {
         // commonmark requires matching angle brackets
-        if (!trimmedUrl.endsWith('>')) {
+        if (!(/>$/.test(trimmedUrl))) {
           return;
         }
 
@@ -508,8 +508,8 @@ module.exports = class Tokenizer {
       }
 
       href = href.trim();
-      if (href.startsWith('<')) {
-        if (this.options.pedantic && !trimmedUrl.endsWith('>')) {
+      if (/^</.test(href)) {
+        if (this.options.pedantic && !(/>$/.test(trimmedUrl))) {
           // pedantic allows starting angle bracket without ending angle bracket
           href = href.slice(1);
         } else {
@@ -592,7 +592,7 @@ module.exports = class Tokenizer {
     if (cap) {
       let text = cap[2].replace(/\n/g, ' ');
       const hasNonSpaceChars = /[^ ]/.test(text);
-      const hasSpaceCharsOnBothEnds = text.startsWith(' ') && text.endsWith(' ');
+      const hasSpaceCharsOnBothEnds = /^ /.test(text) && / $/.test(text);
       if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
         text = text.substring(1, text.length - 1);
       }