marked/lib/marked.js

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = global || self, global.marked = factory());
}(this, (function () { 'use strict';

  function _typeof(obj) {
    if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
      _typeof = function (obj) {
        return typeof obj;
      };
    } else {
      _typeof = function (obj) {
        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
      };
    }

    return _typeof(obj);
  }

  var defaults = getDefaults();
  function getDefaults() {
    return {
      baseUrl: null,
      breaks: false,
      gfm: true,
      headerIds: true,
      headerPrefix: '',
      highlight: null,
      langPrefix: 'language-',
      mangle: true,
      pedantic: false,
      renderer: null,
      sanitize: false,
      sanitizer: null,
      silent: false,
      smartLists: false,
      smartypants: false,
      xhtml: false
    };
  }
  function changeDefaults(newDefaults) {
    defaults = newDefaults;
  }

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */

  /**
   * Helpers
   */
  function escape(html, encode) {
    var escapeTest = /[&<>"']/;
    var escapeReplace = /[&<>"']/g;
    var replacements = {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#39;'
    };
    var escapeTestNoEncode = /[<>"']|&(?!#?\w+;)/;
    var escapeReplaceNoEncode = /[<>"']|&(?!#?\w+;)/g;

    if (encode) {
      if (escapeTest.test(html)) {
        return html.replace(escapeReplace, function (ch) {
          return replacements[ch];
        });
      }
    } else {
      if (escapeTestNoEncode.test(html)) {
        return html.replace(escapeReplaceNoEncode, function (ch) {
          return replacements[ch];
        });
      }
    }

    return html;
  }
  function unescape(html) {
    // explicitly match decimal, hex, and named HTML entities
    return html.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/ig, function (_, n) {
      n = n.toLowerCase();
      if (n === 'colon') return ':';

      if (n.charAt(0) === '#') {
        return n.charAt(1) === 'x' ? String.fromCharCode(parseInt(n.substring(2), 16)) : String.fromCharCode(+n.substring(1));
      }

      return '';
    });
  }
  function edit(regex, opt) {
    regex = regex.source || regex;
    opt = opt || '';
    return {
      replace: function replace(name, val) {
        val = val.source || val;
        val = val.replace(/(^|[^\[])\^/g, '$1');
        regex = regex.replace(name, val);
        return this;
      },
      getRegex: function getRegex() {
        return new RegExp(regex, opt);
      }
    };
  }
  function cleanUrl(sanitize, base, href) {
    if (sanitize) {
      var prot;

      try {
        prot = decodeURIComponent(unescape(href)).replace(/[^\w:]/g, '').toLowerCase();
      } catch (e) {
        return null;
      }

      if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0 || prot.indexOf('data:') === 0) {
        return null;
      }
    }

    var originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;

    if (base && !originIndependentUrl.test(href)) {
      href = resolveUrl(base, href);
    }

    try {
      href = encodeURI(href).replace(/%25/g, '%');
    } catch (e) {
      return null;
    }

    return href;
  }
  function resolveUrl(base, href) {
    if (!resolveUrl.baseUrls[' ' + base]) {
      // we can ignore everything in base after the last slash of its path component,
      // but we might need to add _that_
      // https://tools.ietf.org/html/rfc3986#section-3
      if (/^[^:]+:\/*[^/]*$/.test(base)) {
        resolveUrl.baseUrls[' ' + base] = base + '/';
      } else {
        resolveUrl.baseUrls[' ' + base] = rtrim(base, '/', true);
      }
    }

    base = resolveUrl.baseUrls[' ' + base];
    var relativeBase = base.indexOf(':') === -1;

    if (href.slice(0, 2) === '//') {
      if (relativeBase) {
        return href;
      }

      return base.replace(/^([^:]+:)[\s\S]*$/, '$1') + href;
    } else if (href.charAt(0) === '/') {
      if (relativeBase) {
        return href;
      }

      return base.replace(/^([^:]+:\/*[^/]*)[\s\S]*$/, '$1') + href;
    } else {
      return base + href;
    }
  }
  resolveUrl.baseUrls = {};
  function noop() {}
  noop.exec = noop;
  function merge(obj) {
    var i = 1;
    var target;
    var key;

    for (; i < arguments.length; i++) {
      target = arguments[i];

      for (key in target) {
        if (Object.prototype.hasOwnProperty.call(target, key)) {
          obj[key] = target[key];
        }
      }
    }

    return obj;
  }
  function splitCells(tableRow, count) {
    // ensure that every cell-delimiting pipe has a space
    // before it to distinguish it from an escaped pipe
    var row = tableRow.replace(/\|/g, function (match, offset, str) {
      var escaped = false;
      var curr = offset;

      while (--curr >= 0 && str[curr] === '\\') {
        escaped = !escaped;
      }

      if (escaped) {
        // odd number of slashes means | is escaped
        // so we leave it alone
        return '|';
      } else {
        // add space before unescaped |
        return ' |';
      }
    });
    var cells = row.split(/ \|/);
    var i = 0;

    if (cells.length > count) {
      cells.splice(count);
    } else {
      while (cells.length < count) {
        cells.push('');
      }
    }

    for (; i < cells.length; i++) {
      // leading or trailing whitespace is ignored per the gfm spec
      cells[i] = cells[i].trim().replace(/\\\|/g, '|');
    }

    return cells;
  } // Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
  // /c*$/ is vulnerable to REDOS.
  // invert: Remove suffix of non-c chars instead. Default falsey.

  function rtrim(str, c, invert) {
    if (str.length === 0) {
      return '';
    } // Length of suffix matching the invert condition.


    var suffLen = 0; // Step left until we fail to match the invert condition.

    while (suffLen < str.length) {
      var currChar = str.charAt(str.length - suffLen - 1);

      if (currChar === c && !invert) {
        suffLen++;
      } else if (currChar !== c && invert) {
        suffLen++;
      } else {
        break;
      }
    }

    return str.substr(0, str.length - suffLen);
  }
  function findClosingBracket(str, b) {
    if (str.indexOf(b[1]) === -1) {
      return -1;
    }

    var level = 0;

    for (var i = 0; i < str.length; i++) {
      if (str[i] === '\\') {
        i++;
      } else if (str[i] === b[0]) {
        level++;
      } else if (str[i] === b[1]) {
        level--;

        if (level < 0) {
          return i;
        }
      }
    }

    return -1;
  }
  function checkSanitizeDeprecation(opt) {
    if (opt && opt.sanitize && !opt.silent) {
      console.warn('marked(): sanitize and sanitizer parameters are deprecated since version 0.7.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/#/USING_ADVANCED.md#options');
    }
  }

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */
  /**
   * Block-Level Grammar
   */

  var block = {
    newline: /^\n+/,
    code: /^( {4}[^\n]+\n*)+/,
    fences: /^ {0,3}(`{3,}|~{3,})([^`~\n]*)\n(?:|([\s\S]*?)\n)(?: {0,3}\1[~`]* *(?:\n+|$)|$)/,
    hr: /^ {0,3}((?:- *){3,}|(?:_ *){3,}|(?:\* *){3,})(?:\n+|$)/,
    heading: /^ {0,3}(#{1,6}) +([^\n]*?)(?: +#+)? *(?:\n+|$)/,
    blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
    list: /^( {0,3})(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
    html: '^ {0,3}(?:' // optional indentation
    + '<(script|pre|style)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' // (1)
    + '|comment[^\\n]*(\\n+|$)' // (2)
    + '|<\\?[\\s\\S]*?\\?>\\n*' // (3)
    + '|<![A-Z][\\s\\S]*?>\\n*' // (4)
    + '|<!\\[CDATA\\[[\\s\\S]*?\\]\\]>\\n*' // (5)
    + '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:\\n{2,}|$)' // (6)
    + '|<(?!script|pre|style)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)' // (7) open tag
    + '|</(?!script|pre|style)[a-z][\\w-]*\\s*>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:\\n{2,}|$)' // (7) closing tag
    + ')',
    def: /^ {0,3}\[(label)\]: *\n? *<?([^\s>]+)>?(?:(?: +\n? *| *\n *)(title))? *(?:\n+|$)/,
    nptable: noop,
    table: noop,
    lheading: /^([^\n]+)\n {0,3}(=+|-+) *(?:\n+|$)/,
    // regex template, placeholders will be replaced according to different paragraph
    // interruption rules of commonmark and the original markdown spec:
    _paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html)[^\n]+)*)/,
    text: /^[^\n]+/
  };
  block._label = /(?!\s*\])(?:\\[\[\]]|[^\[\]])+/;
  block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/;
  block.def = edit(block.def).replace('label', block._label).replace('title', block._title).getRegex();
  block.bullet = /(?:[*+-]|\d{1,9}\.)/;
  block.item = /^( *)(bull) ?[^\n]*(?:\n(?!\1bull ?)[^\n]*)*/;
  block.item = edit(block.item, 'gm').replace(/bull/g, block.bullet).getRegex();
  block.list = edit(block.list).replace(/bull/g, block.bullet).replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))').replace('def', '\\n+(?=' + block.def.source + ')').getRegex();
  block._tag = 'address|article|aside|base|basefont|blockquote|body|caption' + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption' + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe' + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option' + '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr' + '|track|ul';
  block._comment = /<!--(?!-?>)[\s\S]*?-->/;
  block.html = edit(block.html, 'i').replace('comment', block._comment).replace('tag', block._tag).replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/).getRegex();
  block.paragraph = edit(block._paragraph).replace('hr', block.hr).replace('heading', ' {0,3}#{1,6} +').replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
  .replace('blockquote', ' {0,3}>').replace('fences', ' {0,3}(?:`{3,}|~{3,})[^`\\n]*\\n').replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
  .replace('html', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|!--)').replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
  .getRegex();
  block.blockquote = edit(block.blockquote).replace('paragraph', block.paragraph).getRegex();
  /**
   * Normal Block Grammar
   */

  block.normal = merge({}, block);
  /**
   * GFM Block Grammar
   */

  block.gfm = merge({}, block.normal, {
    nptable: /^ *([^|\n ].*\|.*)\n *([-:]+ *\|[-| :]*)(?:\n((?:.*[^>\n ].*(?:\n|$))*)\n*|$)/,
    table: /^ *\|(.+)\n *\|?( *[-:]+[-| :]*)(?:\n((?: *[^>\n ].*(?:\n|$))*)\n*|$)/
  });
  /**
   * Pedantic grammar (original John Gruber's loose markdown specification)
   */

  block.pedantic = merge({}, block.normal, {
    html: edit('^ *(?:comment *(?:\\n|\\s*$)' + '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' // closed tag
    + '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))').replace('comment', block._comment).replace(/tag/g, '(?!(?:' + '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').getRegex(),
    def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
    heading: /^ *(#{1,6}) *([^\n]+?) *(?:#+ *)?(?:\n+|$)/,
    fences: noop,
    // fences not supported
    paragraph: edit(block.normal._paragraph).replace('hr', block.hr).replace('heading', ' *#{1,6} *[^\n]').replace('lheading', block.lheading).replace('blockquote', ' {0,3}>').replace('|fences', '').replace('|list', '').replace('|html', '').getRegex()
  });
  /**
   * Inline-Level Grammar
   */

  var inline = {
    escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
    autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
    url: noop,
    tag: '^comment' + '|^</[a-zA-Z][\\w:-]*\\s*>' // self-closing tag
    + '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
    + '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g. <?php ?>
    + '|^<![a-zA-Z]+\\s[\\s\\S]*?>' // declaration, e.g. <!DOCTYPE html>
    + '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>',
    // CDATA section
    link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,
    reflink: /^!?\[(label)\]\[(?!\s*\])((?:\\[\[\]]?|[^\[\]\\])+)\]/,
    nolink: /^!?\[(?!\s*\])((?:\[[^\[\]]*\]|\\[\[\]]|[^\[\]])*)\](?:\[\])?/,
    strong: /^__([^\s_])__(?!_)|^\*\*([^\s*])\*\*(?!\*)|^__([^\s][\s\S]*?[^\s])__(?!_)|^\*\*([^\s][\s\S]*?[^\s])\*\*(?!\*)/,
    em: /^_([^\s_])_(?!_)|^\*([^\s*<\[])\*(?!\*)|^_([^\s<][\s\S]*?[^\s_])_(?!_|[^\spunctuation])|^_([^\s_<][\s\S]*?[^\s])_(?!_|[^\spunctuation])|^\*([^\s<"][\s\S]*?[^\s\*])\*(?!\*|[^\spunctuation])|^\*([^\s*"<\[][\s\S]*?[^\s])\*(?!\*)/,
    code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
    br: /^( {2,}|\\)\n(?!\s*$)/,
    del: noop,
    text: /^(`+|[^`])(?:[\s\S]*?(?:(?=[\\<!\[`*]|\b_|$)|[^ ](?= {2,}\n))|(?= {2,}\n))/
  }; // list of punctuation marks from common mark spec
  // without ` and ] to workaround Rule 17 (inline code blocks/links)

  inline._punctuation = '!"#$%&\'()*+,\\-./:;<=>?@\\[^_{|}~';
  inline.em = edit(inline.em).replace(/punctuation/g, inline._punctuation).getRegex();
  inline._escapes = /\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/g;
  inline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/;
  inline._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])?)+(?![-_])/;
  inline.autolink = edit(inline.autolink).replace('scheme', inline._scheme).replace('email', inline._email).getRegex();
  inline._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/;
  inline.tag = edit(inline.tag).replace('comment', block._comment).replace('attribute', inline._attribute).getRegex();
  inline._label = /(?:\[[^\[\]]*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
  inline._href = /<(?:\\[<>]?|[^\s<>\\])*>|[^\s\x00-\x1f]*/;
  inline._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/;
  inline.link = edit(inline.link).replace('label', inline._label).replace('href', inline._href).replace('title', inline._title).getRegex();
  inline.reflink = edit(inline.reflink).replace('label', inline._label).getRegex();
  /**
   * Normal Inline Grammar
   */

  inline.normal = merge({}, inline);
  /**
   * Pedantic Inline Grammar
   */

  inline.pedantic = merge({}, inline.normal, {
    strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
    em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/,
    link: edit(/^!?\[(label)\]\((.*?)\)/).replace('label', inline._label).getRegex(),
    reflink: edit(/^!?\[(label)\]\s*\[([^\]]*)\]/).replace('label', inline._label).getRegex()
  });
  /**
   * GFM Inline Grammar
   */

  inline.gfm = merge({}, inline.normal, {
    escape: edit(inline.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)~+/,
    text: /^(`+|[^`])(?:[\s\S]*?(?:(?=[\\<!\[`*~]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@))|(?= {2,}\n|[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@))/
  });
  inline.gfm.url = edit(inline.gfm.url, 'i').replace('email', inline.gfm._extended_email).getRegex();
  /**
   * GFM + Line Breaks Inline Grammar
   */

  inline.breaks = merge({}, inline.gfm, {
    br: edit(inline.br).replace('{2,}', '*').getRegex(),
    text: edit(inline.gfm.text).replace('\\b_', '\\b_| {2,}\\n').replace(/\{2,\}/g, '*').getRegex()
  });

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */
  /**
   * Block Lexer
   */

  function Lexer(options) {
    this.tokens = [];
    this.tokens.links = Object.create(null);
    this.options = options || defaults;
    this.rules = block.normal;

    if (this.options.pedantic) {
      this.rules = block.pedantic;
    } else if (this.options.gfm) {
      this.rules = block.gfm;
    }
  }
  /**
   * Expose Block Rules
   */

  Lexer.rules = block;
  /**
   * Static Lex Method
   */

  Lexer.lex = function (src, options) {
    var lexer = new Lexer(options);
    return lexer.lex(src);
  };
  /**
   * Preprocessing
   */


  Lexer.prototype.lex = function (src) {
    src = src.replace(/\r\n|\r/g, '\n').replace(/\t/g, '    ');
    return this.token(src, true);
  };
  /**
   * Lexing
   */


  Lexer.prototype.token = function (src, top) {
    src = src.replace(/^ +$/gm, '');
    var next, loose, cap, bull, b, item, listStart, listItems, t, space, i, tag, l, isordered, istask, ischecked;

    while (src) {
      // newline
      if (cap = this.rules.newline.exec(src)) {
        src = src.substring(cap[0].length);

        if (cap[0].length > 1) {
          this.tokens.push({
            type: 'space'
          });
        }
      } // code


      if (cap = this.rules.code.exec(src)) {
        var lastToken = this.tokens[this.tokens.length - 1];
        src = src.substring(cap[0].length); // An indented code block cannot interrupt a paragraph.

        if (lastToken && lastToken.type === 'paragraph') {
          lastToken.text += '\n' + cap[0].trimRight();
        } else {
          cap = cap[0].replace(/^ {4}/gm, '');
          this.tokens.push({
            type: 'code',
            codeBlockStyle: 'indented',
            text: !this.options.pedantic ? rtrim(cap, '\n') : cap
          });
        }

        continue;
      } // fences


      if (cap = this.rules.fences.exec(src)) {
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: 'code',
          lang: cap[2] ? cap[2].trim() : cap[2],
          text: cap[3] || ''
        });
        continue;
      } // heading


      if (cap = this.rules.heading.exec(src)) {
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: 'heading',
          depth: cap[1].length,
          text: cap[2]
        });
        continue;
      } // table no leading pipe (gfm)


      if (cap = this.rules.nptable.exec(src)) {
        item = {
          type: 'table',
          header: splitCells(cap[1].replace(/^ *| *\| *$/g, '')),
          align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
          cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : []
        };

        if (item.header.length === item.align.length) {
          src = src.substring(cap[0].length);

          for (i = 0; i < item.align.length; i++) {
            if (/^ *-+: *$/.test(item.align[i])) {
              item.align[i] = 'right';
            } else if (/^ *:-+: *$/.test(item.align[i])) {
              item.align[i] = 'center';
            } else if (/^ *:-+ *$/.test(item.align[i])) {
              item.align[i] = 'left';
            } else {
              item.align[i] = null;
            }
          }

          for (i = 0; i < item.cells.length; i++) {
            item.cells[i] = splitCells(item.cells[i], item.header.length);
          }

          this.tokens.push(item);
          continue;
        }
      } // hr


      if (cap = this.rules.hr.exec(src)) {
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: 'hr'
        });
        continue;
      } // blockquote


      if (cap = this.rules.blockquote.exec(src)) {
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: 'blockquote_start'
        });
        cap = cap[0].replace(/^ *> ?/gm, ''); // Pass `top` to keep the current
        // "toplevel" state. This is exactly
        // how markdown.pl works.

        this.token(cap, top);
        this.tokens.push({
          type: 'blockquote_end'
        });
        continue;
      } // list


      if (cap = this.rules.list.exec(src)) {
        src = src.substring(cap[0].length);
        bull = cap[2];
        isordered = bull.length > 1;
        listStart = {
          type: 'list_start',
          ordered: isordered,
          start: isordered ? +bull : '',
          loose: false
        };
        this.tokens.push(listStart); // Get each top-level item.

        cap = cap[0].match(this.rules.item);
        listItems = [];
        next = false;
        l = cap.length;
        i = 0;

        for (; i < l; i++) {
          item = cap[i]; // Remove the list item's bullet
          // so it is seen as the next token.

          space = item.length;
          item = item.replace(/^ *([*+-]|\d+\.) */, ''); // Outdent whatever the
          // list item contains. Hacky.

          if (~item.indexOf('\n ')) {
            space -= item.length;
            item = !this.options.pedantic ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '') : item.replace(/^ {1,4}/gm, '');
          } // Determine whether the next list item belongs here.
          // Backpedal if it does not belong in this list.


          if (i !== l - 1) {
            b = block.bullet.exec(cap[i + 1])[0];

            if (bull.length > 1 ? b.length === 1 : b.length > 1 || this.options.smartLists && b !== bull) {
              src = cap.slice(i + 1).join('\n') + src;
              i = l - 1;
            }
          } // Determine whether item is loose or not.
          // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
          // for discount behavior.


          loose = next || /\n\n(?!\s*$)/.test(item);

          if (i !== l - 1) {
            next = item.charAt(item.length - 1) === '\n';
            if (!loose) loose = next;
          }

          if (loose) {
            listStart.loose = true;
          } // Check for task list items


          istask = /^\[[ xX]\] /.test(item);
          ischecked = undefined;

          if (istask) {
            ischecked = item[1] !== ' ';
            item = item.replace(/^\[[ xX]\] +/, '');
          }

          t = {
            type: 'list_item_start',
            task: istask,
            checked: ischecked,
            loose: loose
          };
          listItems.push(t);
          this.tokens.push(t); // Recurse.

          this.token(item, false);
          this.tokens.push({
            type: 'list_item_end'
          });
        }

        if (listStart.loose) {
          l = listItems.length;
          i = 0;

          for (; i < l; i++) {
            listItems[i].loose = true;
          }
        }

        this.tokens.push({
          type: 'list_end'
        });
        continue;
      } // html


      if (cap = this.rules.html.exec(src)) {
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: this.options.sanitize ? 'paragraph' : 'html',
          pre: !this.options.sanitizer && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
          text: this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]) : cap[0]
        });
        continue;
      } // def


      if (top && (cap = this.rules.def.exec(src))) {
        src = src.substring(cap[0].length);
        if (cap[3]) cap[3] = cap[3].substring(1, cap[3].length - 1);
        tag = cap[1].toLowerCase().replace(/\s+/g, ' ');

        if (!this.tokens.links[tag]) {
          this.tokens.links[tag] = {
            href: cap[2],
            title: cap[3]
          };
        }

        continue;
      } // table (gfm)


      if (cap = this.rules.table.exec(src)) {
        item = {
          type: 'table',
          header: splitCells(cap[1].replace(/^ *| *\| *$/g, '')),
          align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
          cells: cap[3] ? cap[3].replace(/\n$/, '').split('\n') : []
        };

        if (item.header.length === item.align.length) {
          src = src.substring(cap[0].length);

          for (i = 0; i < item.align.length; i++) {
            if (/^ *-+: *$/.test(item.align[i])) {
              item.align[i] = 'right';
            } else if (/^ *:-+: *$/.test(item.align[i])) {
              item.align[i] = 'center';
            } else if (/^ *:-+ *$/.test(item.align[i])) {
              item.align[i] = 'left';
            } else {
              item.align[i] = null;
            }
          }

          for (i = 0; i < item.cells.length; i++) {
            item.cells[i] = splitCells(item.cells[i].replace(/^ *\| *| *\| *$/g, ''), item.header.length);
          }

          this.tokens.push(item);
          continue;
        }
      } // lheading


      if (cap = this.rules.lheading.exec(src)) {
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: 'heading',
          depth: cap[2].charAt(0) === '=' ? 1 : 2,
          text: cap[1]
        });
        continue;
      } // top-level paragraph


      if (top && (cap = this.rules.paragraph.exec(src))) {
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: 'paragraph',
          text: cap[1].charAt(cap[1].length - 1) === '\n' ? cap[1].slice(0, -1) : cap[1]
        });
        continue;
      } // text


      if (cap = this.rules.text.exec(src)) {
        // Top-level should never reach here.
        src = src.substring(cap[0].length);
        this.tokens.push({
          type: 'text',
          text: cap[0]
        });
        continue;
      }

      if (src) {
        throw new Error('Infinite loop on byte: ' + src.charCodeAt(0));
      }
    }

    return this.tokens;
  };

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */
  /**
   * Renderer
   */

  function Renderer(options) {
    this.options = options || defaults;
  }

  Renderer.prototype.code = function (code, infostring, escaped) {
    var lang = (infostring || '').match(/\S*/)[0];

    if (this.options.highlight) {
      var out = this.options.highlight(code, lang);

      if (out != null && out !== code) {
        escaped = true;
        code = out;
      }
    }

    if (!lang) {
      return '<pre><code>' + (escaped ? code : escape(code, true)) + '</code></pre>';
    }

    return '<pre><code class="' + this.options.langPrefix + escape(lang, true) + '">' + (escaped ? code : escape(code, true)) + '</code></pre>\n';
  };

  Renderer.prototype.blockquote = function (quote) {
    return '<blockquote>\n' + quote + '</blockquote>\n';
  };

  Renderer.prototype.html = function (html) {
    return html;
  };

  Renderer.prototype.heading = function (text, level, raw, slugger) {
    if (this.options.headerIds) {
      return '<h' + level + ' id="' + this.options.headerPrefix + slugger.slug(raw) + '">' + text + '</h' + level + '>\n';
    } // ignore IDs


    return '<h' + level + '>' + text + '</h' + level + '>\n';
  };

  Renderer.prototype.hr = function () {
    return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
  };

  Renderer.prototype.list = function (body, ordered, start) {
    var type = ordered ? 'ol' : 'ul',
        startatt = ordered && start !== 1 ? ' start="' + start + '"' : '';
    return '<' + type + startatt + '>\n' + body + '</' + type + '>\n';
  };

  Renderer.prototype.listitem = function (text) {
    return '<li>' + text + '</li>\n';
  };

  Renderer.prototype.checkbox = function (checked) {
    return '<input ' + (checked ? 'checked="" ' : '') + 'disabled="" type="checkbox"' + (this.options.xhtml ? ' /' : '') + '> ';
  };

  Renderer.prototype.paragraph = function (text) {
    return '<p>' + text + '</p>\n';
  };

  Renderer.prototype.table = function (header, body) {
    if (body) body = '<tbody>' + body + '</tbody>';
    return '<table>\n' + '<thead>\n' + header + '</thead>\n' + body + '</table>\n';
  };

  Renderer.prototype.tablerow = function (content) {
    return '<tr>\n' + content + '</tr>\n';
  };

  Renderer.prototype.tablecell = function (content, flags) {
    var type = flags.header ? 'th' : 'td';
    var tag = flags.align ? '<' + type + ' align="' + flags.align + '">' : '<' + type + '>';
    return tag + content + '</' + type + '>\n';
  }; // span level renderer


  Renderer.prototype.strong = function (text) {
    return '<strong>' + text + '</strong>';
  };

  Renderer.prototype.em = function (text) {
    return '<em>' + text + '</em>';
  };

  Renderer.prototype.codespan = function (text) {
    return '<code>' + text + '</code>';
  };

  Renderer.prototype.br = function () {
    return this.options.xhtml ? '<br/>' : '<br>';
  };

  Renderer.prototype.del = function (text) {
    return '<del>' + text + '</del>';
  };

  Renderer.prototype.link = function (href, title, text) {
    href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);

    if (href === null) {
      return text;
    }

    var out = '<a href="' + escape(href) + '"';

    if (title) {
      out += ' title="' + title + '"';
    }

    out += '>' + text + '</a>';
    return out;
  };

  Renderer.prototype.image = function (href, title, text) {
    href = cleanUrl(this.options.sanitize, this.options.baseUrl, href);

    if (href === null) {
      return text;
    }

    var out = '<img src="' + href + '" alt="' + text + '"';

    if (title) {
      out += ' title="' + title + '"';
    }

    out += this.options.xhtml ? '/>' : '>';
    return out;
  };

  Renderer.prototype.text = function (text) {
    return text;
  };

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */

  /**
   * Slugger generates header id
   */
  function Slugger() {
    this.seen = {};
  }
  /**
   * Convert string to unique id
   */

  Slugger.prototype.slug = function (value) {
    var slug = value.toLowerCase().trim().replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, '').replace(/\s/g, '-');

    if (this.seen.hasOwnProperty(slug)) {
      var originalSlug = slug;

      do {
        this.seen[originalSlug]++;
        slug = originalSlug + '-' + this.seen[originalSlug];
      } while (this.seen.hasOwnProperty(slug));
    }

    this.seen[slug] = 0;
    return slug;
  };

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */
  /**
   * Inline Lexer & Compiler
   */

  function InlineLexer(links, options) {
    this.options = options || defaults;
    this.links = links;
    this.rules = inline.normal;
    this.renderer = this.options.renderer || new Renderer();
    this.renderer.options = this.options;

    if (!this.links) {
      throw new Error('Tokens array requires a `links` property.');
    }

    if (this.options.pedantic) {
      this.rules = inline.pedantic;
    } else if (this.options.gfm) {
      if (this.options.breaks) {
        this.rules = inline.breaks;
      } else {
        this.rules = inline.gfm;
      }
    }
  }
  /**
   * Expose Inline Rules
   */

  InlineLexer.rules = inline;
  /**
   * Static Lexing/Compiling Method
   */

  InlineLexer.output = function (src, links, options) {
    var inline = new InlineLexer(links, options);
    return inline.output(src);
  };
  /**
   * Lexing/Compiling
   */


  InlineLexer.prototype.output = function (src) {
    var out = '';
    var link;
    var text;
    var href;
    var title;
    var cap;
    var prevCapZero;

    while (src) {
      // escape
      if (cap = this.rules.escape.exec(src)) {
        src = src.substring(cap[0].length);
        out += escape(cap[1]);
        continue;
      } // tag


      if (cap = this.rules.tag.exec(src)) {
        if (!this.inLink && /^<a /i.test(cap[0])) {
          this.inLink = true;
        } else if (this.inLink && /^<\/a>/i.test(cap[0])) {
          this.inLink = false;
        }

        if (!this.inRawBlock && /^<(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
          this.inRawBlock = true;
        } else if (this.inRawBlock && /^<\/(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
          this.inRawBlock = false;
        }

        src = src.substring(cap[0].length);
        out += this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]) : cap[0];
        continue;
      } // link


      if (cap = this.rules.link.exec(src)) {
        var lastParenIndex = findClosingBracket(cap[2], '()');

        if (lastParenIndex > -1) {
          var start = cap[0].indexOf('!') === 0 ? 5 : 4;
          var linkLen = start + cap[1].length + lastParenIndex;
          cap[2] = cap[2].substring(0, lastParenIndex);
          cap[0] = cap[0].substring(0, linkLen).trim();
          cap[3] = '';
        }

        src = src.substring(cap[0].length);
        this.inLink = true;
        href = cap[2];

        if (this.options.pedantic) {
          link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href);

          if (link) {
            href = link[1];
            title = link[3];
          } else {
            title = '';
          }
        } else {
          title = cap[3] ? cap[3].slice(1, -1) : '';
        }

        href = href.trim().replace(/^<([\s\S]*)>$/, '$1');
        out += this.outputLink(cap, {
          href: InlineLexer.escapes(href),
          title: InlineLexer.escapes(title)
        });
        this.inLink = false;
        continue;
      } // reflink, nolink


      if ((cap = this.rules.reflink.exec(src)) || (cap = this.rules.nolink.exec(src))) {
        src = src.substring(cap[0].length);
        link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
        link = this.links[link.toLowerCase()];

        if (!link || !link.href) {
          out += cap[0].charAt(0);
          src = cap[0].substring(1) + src;
          continue;
        }

        this.inLink = true;
        out += this.outputLink(cap, link);
        this.inLink = false;
        continue;
      } // strong


      if (cap = this.rules.strong.exec(src)) {
        src = src.substring(cap[0].length);
        out += this.renderer.strong(this.output(cap[4] || cap[3] || cap[2] || cap[1]));
        continue;
      } // em


      if (cap = this.rules.em.exec(src)) {
        src = src.substring(cap[0].length);
        out += this.renderer.em(this.output(cap[6] || cap[5] || cap[4] || cap[3] || cap[2] || cap[1]));
        continue;
      } // code


      if (cap = this.rules.code.exec(src)) {
        src = src.substring(cap[0].length);
        out += this.renderer.codespan(escape(cap[2].trim(), true));
        continue;
      } // br


      if (cap = this.rules.br.exec(src)) {
        src = src.substring(cap[0].length);
        out += this.renderer.br();
        continue;
      } // del (gfm)


      if (cap = this.rules.del.exec(src)) {
        src = src.substring(cap[0].length);
        out += this.renderer.del(this.output(cap[1]));
        continue;
      } // autolink


      if (cap = this.rules.autolink.exec(src)) {
        src = src.substring(cap[0].length);

        if (cap[2] === '@') {
          text = escape(this.mangle(cap[1]));
          href = 'mailto:' + text;
        } else {
          text = escape(cap[1]);
          href = text;
        }

        out += this.renderer.link(href, null, text);
        continue;
      } // url (gfm)


      if (!this.inLink && (cap = this.rules.url.exec(src))) {
        if (cap[2] === '@') {
          text = escape(cap[0]);
          href = 'mailto:' + text;
        } else {
          // do extended autolink path validation
          do {
            prevCapZero = cap[0];
            cap[0] = this.rules._backpedal.exec(cap[0])[0];
          } while (prevCapZero !== cap[0]);

          text = escape(cap[0]);

          if (cap[1] === 'www.') {
            href = 'http://' + text;
          } else {
            href = text;
          }
        }

        src = src.substring(cap[0].length);
        out += this.renderer.link(href, null, text);
        continue;
      } // text


      if (cap = this.rules.text.exec(src)) {
        src = src.substring(cap[0].length);

        if (this.inRawBlock) {
          out += this.renderer.text(this.options.sanitize ? this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]) : cap[0]);
        } else {
          out += this.renderer.text(escape(this.smartypants(cap[0])));
        }

        continue;
      }

      if (src) {
        throw new Error('Infinite loop on byte: ' + src.charCodeAt(0));
      }
    }

    return out;
  };

  InlineLexer.escapes = function (text) {
    return text ? text.replace(InlineLexer.rules._escapes, '$1') : text;
  };
  /**
   * Compile Link
   */


  InlineLexer.prototype.outputLink = function (cap, link) {
    var href = link.href,
        title = link.title ? escape(link.title) : null;
    return cap[0].charAt(0) !== '!' ? this.renderer.link(href, title, this.output(cap[1])) : this.renderer.image(href, title, escape(cap[1]));
  };
  /**
   * Smartypants Transformations
   */


  InlineLexer.prototype.smartypants = function (text) {
    if (!this.options.smartypants) return text;
    return text // em-dashes
    .replace(/---/g, "\u2014") // en-dashes
    .replace(/--/g, "\u2013") // opening singles
    .replace(/(^|[-\u2014/(\[{"\s])'/g, "$1\u2018") // closing singles & apostrophes
    .replace(/'/g, "\u2019") // opening doubles
    .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, "$1\u201C") // closing doubles
    .replace(/"/g, "\u201D") // ellipses
    .replace(/\.{3}/g, "\u2026");
  };
  /**
   * Mangle Links
   */


  InlineLexer.prototype.mangle = function (text) {
    if (!this.options.mangle) return text;
    var out = '';
    var l = text.length;
    var ch;

    for (var i = 0; i < l; i++) {
      ch = text.charCodeAt(i);

      if (Math.random() > 0.5) {
        ch = 'x' + ch.toString(16);
      }

      out += '&#' + ch + ';';
    }

    return out;
  };

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */

  /**
   * TextRenderer
   * returns only the textual part of the token
   */
  function TextRenderer() {} // no need for block level renderers

  TextRenderer.prototype.strong = TextRenderer.prototype.em = TextRenderer.prototype.codespan = TextRenderer.prototype.del = TextRenderer.prototype.text = function (text) {
    return text;
  };

  TextRenderer.prototype.link = TextRenderer.prototype.image = function (href, title, text) {
    return '' + text;
  };

  TextRenderer.prototype.br = function () {
    return '';
  };

  /**
   * marked - a markdown parser
   * Copyright (c) 2011-2018, Christopher Jeffrey. (MIT Licensed)
   * https://github.com/markedjs/marked
   */
  /**
   * Parsing & Compiling
   */

  function Parser(options) {
    this.tokens = [];
    this.token = null;
    this.options = options || defaults;
    this.options.renderer = this.options.renderer || new Renderer();
    this.renderer = this.options.renderer;
    this.renderer.options = this.options;
    this.slugger = new Slugger();
  }
  /**
   * Static Parse Method
   */

  Parser.parse = function (src, options) {
    var parser = new Parser(options);
    return parser.parse(src);
  };
  /**
   * Parse Loop
   */


  Parser.prototype.parse = function (src) {
    this.inline = new InlineLexer(src.links, this.options); // use an InlineLexer with a TextRenderer to extract pure text

    this.inlineText = new InlineLexer(src.links, merge({}, this.options, {
      renderer: new TextRenderer()
    }));
    this.tokens = src.reverse();
    var out = '';

    while (this.next()) {
      out += this.tok();
    }

    return out;
  };
  /**
   * Next Token
   */


  Parser.prototype.next = function () {
    this.token = this.tokens.pop();
    return this.token;
  };
  /**
   * Preview Next Token
   */


  Parser.prototype.peek = function () {
    return this.tokens[this.tokens.length - 1] || 0;
  };
  /**
   * Parse Text Tokens
   */


  Parser.prototype.parseText = function () {
    var body = this.token.text;

    while (this.peek().type === 'text') {
      body += '\n' + this.next().text;
    }

    return this.inline.output(body);
  };
  /**
   * Parse Current Token
   */


  Parser.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, unescape(this.inlineText.output(this.token.text)), this.slugger);
        }

      case 'code':
        {
          return this.renderer.code(this.token.text, this.token.lang, this.token.escaped);
        }

      case 'table':
        {
          var header = '';
          var body = '';
          var i;
          var row;
          var cell;
          var j; // header

          cell = '';

          for (i = 0; i < this.token.header.length; i++) {
            cell += this.renderer.tablecell(this.inline.output(this.token.header[i]), {
              header: true,
              align: this.token.align[i]
            });
          }

          header += this.renderer.tablerow(cell);

          for (i = 0; i < this.token.cells.length; i++) {
            row = this.token.cells[i];
            cell = '';

            for (j = 0; j < row.length; j++) {
              cell += this.renderer.tablecell(this.inline.output(row[j]), {
                header: false,
                align: this.token.align[j]
              });
            }

            body += this.renderer.tablerow(cell);
          }

          return this.renderer.table(header, body);
        }

      case 'blockquote_start':
        {
          var _body = '';

          while (this.next().type !== 'blockquote_end') {
            _body += this.tok();
          }

          return this.renderer.blockquote(_body);
        }

      case 'list_start':
        {
          var _body2 = '';
          var ordered = this.token.ordered,
              start = this.token.start;

          while (this.next().type !== 'list_end') {
            _body2 += this.tok();
          }

          return this.renderer.list(_body2, ordered, start);
        }

      case 'list_item_start':
        {
          var _body3 = '';
          var loose = this.token.loose;
          var checked = this.token.checked;
          var task = this.token.task;

          if (this.token.task) {
            if (loose) {
              if (this.peek().type === 'text') {
                var nextToken = this.peek();
                nextToken.text = this.renderer.checkbox(checked) + ' ' + nextToken.text;
              } else {
                this.tokens.push({
                  type: 'text',
                  text: this.renderer.checkbox(checked)
                });
              }
            } else {
              _body3 += this.renderer.checkbox(checked);
            }
          }

          while (this.next().type !== 'list_item_end') {
            _body3 += !loose && this.token.type === 'text' ? this.parseText() : this.tok();
          }

          return this.renderer.listitem(_body3, task, checked);
        }

      case 'html':
        {
          // TODO parse inline content if parameter markdown=1
          return this.renderer.html(this.token.text);
        }

      case 'paragraph':
        {
          return this.renderer.paragraph(this.inline.output(this.token.text));
        }

      case 'text':
        {
          return this.renderer.paragraph(this.parseText());
        }

      default:
        {
          var errMsg = 'Token with "' + this.token.type + '" type was not found.';

          if (this.options.silent) {
            console.log(errMsg);
          } else {
            throw new Error(errMsg);
          }
        }
    }
  };

  /**
   * Marked
   */

  function marked(src, opt, callback) {
    // throw error in case of non string input
    if (typeof src === 'undefined' || src === null) {
      throw new Error('marked(): input parameter is undefined or null');
    }

    if (typeof src !== 'string') {
      throw new Error('marked(): input parameter is of type ' + Object.prototype.toString.call(src) + ', string expected');
    }

    if (callback || typeof opt === 'function') {
      var _ret = function () {
        if (!callback) {
          callback = opt;
          opt = null;
        }

        opt = merge({}, marked.defaults, opt || {});
        checkSanitizeDeprecation(opt);
        var highlight = opt.highlight;
        var tokens;
        var pending;
        var i = 0;

        try {
          tokens = Lexer.lex(src, opt);
        } catch (e) {
          return {
            v: callback(e)
          };
        }

        pending = tokens.length;

        var done = function done(err) {
          if (err) {
            opt.highlight = highlight;
            return callback(err);
          }

          var out;

          try {
            out = Parser.parse(tokens, opt);
          } catch (e) {
            err = e;
          }

          opt.highlight = highlight;
          return err ? callback(err) : callback(null, out);
        };

        if (!highlight || highlight.length < 3) {
          return {
            v: done()
          };
        }

        delete opt.highlight;
        if (!pending) return {
          v: done()
        };

        for (; i < tokens.length; i++) {
          (function (token) {
            if (token.type !== 'code') {
              return --pending || done();
            }

            return highlight(token.text, token.lang, function (err, code) {
              if (err) return done(err);

              if (code == null || code === token.text) {
                return --pending || done();
              }

              token.text = code;
              token.escaped = true;
              --pending || done();
            });
          })(tokens[i]);
        }

        return {
          v: void 0
        };
      }();

      if (_typeof(_ret) === "object") return _ret.v;
    }

    try {
      opt = merge({}, marked.defaults, opt || {});
      checkSanitizeDeprecation(opt);
      var t = Lexer.lex(src, opt);
      return Parser.parse(t, opt);
    } catch (e) {
      e.message += '\nPlease report this to https://github.com/markedjs/marked.';

      if ((opt || marked.defaults).silent) {
        return '<p>An error occurred:</p><pre>' + escape(e.message + '', true) + '</pre>';
      }

      throw e;
    }
  }
  /**
   * Options
   */

  marked.options = marked.setOptions = function (opt) {
    merge(marked.defaults, opt);
    return marked;
  };

  marked.getDefaults = getDefaults;
  Object.defineProperty(marked, 'defaults', {
    get: function get() {
      return defaults;
    },
    set: function set(value) {
      changeDefaults(value);
    }
  });
  /**
   * Expose
   */

  marked.Parser = Parser;
  marked.parser = Parser.parse;
  marked.Renderer = Renderer;
  marked.TextRenderer = TextRenderer;
  marked.Lexer = Lexer;
  marked.lexer = Lexer.lex;
  marked.InlineLexer = InlineLexer;
  marked.inlineLexer = InlineLexer.output;
  marked.Slugger = Slugger;
  marked.parse = marked;

  return marked;

})));