Note Markdown.js

{
	"translatorID": "1412e9e2-51e1-42ec-aa35-e036a895534b",
	"label": "Note Markdown",
	"creator": "Martynas Bagdonas",
	"target": "md",
	"minVersion": "5.0.97",
	"maxVersion": "",
	"priority": 50,
	"configOptions": {
		"noteTranslator": true
	},
	"displayOptions": {
		"includeAppLinks": true
	},
	"inRepository": true,
	"translatorType": 2,
	"lastUpdated": "2024-07-10 16:00:00"
}

/*
    ***** BEGIN LICENSE BLOCK *****
    
    Copyright © 2021 Corporation for Digital Scholarship
                     Vienna, Virginia, USA
                     http://digitalscholar.org/
    
    This file is part of Zotero.
    
    Zotero is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    
    Zotero is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.
    
    You should have received a copy of the GNU Affero General Public License
    along with Zotero.  If not, see <http://www.gnu.org/licenses/>.
    
    ***** END LICENSE BLOCK *****
*/

let bundle;
(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],2:[function(require,module,exports){
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var highlightRegExp = /highlight-(?:text|source)-([a-z0-9]+)/;

function highlightedCodeBlock (turndownService) {
  turndownService.addRule('highlightedCodeBlock', {
    filter: function (node) {
      var firstChild = node.firstChild;
      return (
        node.nodeName === 'DIV' &&
        highlightRegExp.test(node.className) &&
        firstChild &&
        firstChild.nodeName === 'PRE'
      )
    },
    replacement: function (content, node, options) {
      var className = node.className || '';
      var language = (className.match(highlightRegExp) || [null, ''])[1];

      return (
        '\n\n' + options.fence + language + '\n' +
        node.firstChild.textContent +
        '\n' + options.fence + '\n\n'
      )
    }
  });
}

function strikethrough (turndownService) {
  turndownService.addRule('strikethrough', {
    filter: ['del', 's', 'strike'],
    replacement: function (content) {
      return '~' + content + '~'
    }
  });
}

var indexOf = Array.prototype.indexOf;
var every = Array.prototype.every;
var rules = {};

rules.tableCell = {
  filter: ['th', 'td'],
  replacement: function (content, node) {
    return cell(content, node)
  }
};

rules.tableRow = {
  filter: 'tr',
  replacement: function (content, node) {
    var borderCells = '';
    var alignMap = { left: ':--', right: '--:', center: ':-:' };

    if (isHeadingRow(node)) {
      for (var i = 0; i < node.childNodes.length; i++) {
        var border = '---';
        var align = (
          node.childNodes[i].getAttribute('align') || ''
        ).toLowerCase();

        if (align) border = alignMap[align] || border;

        borderCells += cell(border, node.childNodes[i]);
      }
    }
    return '\n' + content + (borderCells ? '\n' + borderCells : '')
  }
};

rules.table = {
  // Only convert tables with a heading row.
  // Tables with no heading row are kept using `keep` (see below).
  filter: function (node) {
    return node.nodeName === 'TABLE' && isHeadingRow(node.rows[0])
  },

  replacement: function (content) {
    // Ensure there are no blank lines
    content = content.replace('\n\n', '\n');
    return '\n\n' + content + '\n\n'
  }
};

rules.tableSection = {
  filter: ['thead', 'tbody', 'tfoot'],
  replacement: function (content) {
    return content
  }
};

// A tr is a heading row if:
// - the parent is a THEAD
// - or if its the first child of the TABLE or the first TBODY (possibly
//   following a blank THEAD)
// - and every cell is a TH
function isHeadingRow (tr) {
  var parentNode = tr.parentNode;
  return (
    parentNode.nodeName === 'THEAD' ||
    (
      parentNode.firstChild === tr &&
      (parentNode.nodeName === 'TABLE' || isFirstTbody(parentNode)) &&
      every.call(tr.childNodes, function (n) { return n.nodeName === 'TH' })
    )
  )
}

function isFirstTbody (element) {
  var previousSibling = element.previousSibling;
  return (
    element.nodeName === 'TBODY' && (
      !previousSibling ||
      (
        previousSibling.nodeName === 'THEAD' &&
        /^\s*$/i.test(previousSibling.textContent)
      )
    )
  )
}

function cell (content, node) {
  var index = indexOf.call(node.parentNode.childNodes, node);
  var prefix = ' ';
  if (index === 0) prefix = '| ';
  return prefix + content + ' |'
}

function tables (turndownService) {
  turndownService.keep(function (node) {
    return node.nodeName === 'TABLE' && !isHeadingRow(node.rows[0])
  });
  for (var key in rules) turndownService.addRule(key, rules[key]);
}

function taskListItems (turndownService) {
  turndownService.addRule('taskListItems', {
    filter: function (node) {
      return node.type === 'checkbox' && node.parentNode.nodeName === 'LI'
    },
    replacement: function (content, node) {
      return (node.checked ? '[x]' : '[ ]') + ' '
    }
  });
}

function gfm (turndownService) {
  turndownService.use([
    highlightedCodeBlock,
    strikethrough,
    tables,
    taskListItems
  ]);
}

exports.gfm = gfm;
exports.highlightedCodeBlock = highlightedCodeBlock;
exports.strikethrough = strikethrough;
exports.tables = tables;
exports.taskListItems = taskListItems;

},{}],3:[function(require,module,exports){
(function (process){(function (){
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.TurndownService = factory());
}(this, (function () { 'use strict';

  function extend (destination) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];
      for (var key in source) {
        if (source.hasOwnProperty(key)) destination[key] = source[key];
      }
    }
    return destination
  }

  function repeat (character, count) {
    return Array(count + 1).join(character)
  }

  function trimLeadingNewlines (string) {
    return string.replace(/^\n*/, '')
  }

  function trimTrailingNewlines (string) {
    // avoid match-at-end regexp bottleneck, see #370
    var indexEnd = string.length;
    while (indexEnd > 0 && string[indexEnd - 1] === '\n') indexEnd--;
    return string.substring(0, indexEnd)
  }

  var blockElements = [
    'ADDRESS', 'ARTICLE', 'ASIDE', 'AUDIO', 'BLOCKQUOTE', 'BODY', 'CANVAS',
    'CENTER', 'DD', 'DIR', 'DIV', 'DL', 'DT', 'FIELDSET', 'FIGCAPTION', 'FIGURE',
    'FOOTER', 'FORM', 'FRAMESET', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6', 'HEADER',
    'HGROUP', 'HR', 'HTML', 'ISINDEX', 'LI', 'MAIN', 'MENU', 'NAV', 'NOFRAMES',
    'NOSCRIPT', 'OL', 'OUTPUT', 'P', 'PRE', 'SECTION', 'TABLE', 'TBODY', 'TD',
    'TFOOT', 'TH', 'THEAD', 'TR', 'UL'
  ];

  function isBlock (node) {
    return is(node, blockElements)
  }

  var voidElements = [
    'AREA', 'BASE', 'BR', 'COL', 'COMMAND', 'EMBED', 'HR', 'IMG', 'INPUT',
    'KEYGEN', 'LINK', 'META', 'PARAM', 'SOURCE', 'TRACK', 'WBR'
  ];

  function isVoid (node) {
    return is(node, voidElements)
  }

  function hasVoid (node) {
    return has(node, voidElements)
  }

  var meaningfulWhenBlankElements = [
    'A', 'TABLE', 'THEAD', 'TBODY', 'TFOOT', 'TH', 'TD', 'IFRAME', 'SCRIPT',
    'AUDIO', 'VIDEO'
  ];

  function isMeaningfulWhenBlank (node) {
    return is(node, meaningfulWhenBlankElements)
  }

  function hasMeaningfulWhenBlank (node) {
    return has(node, meaningfulWhenBlankElements)
  }

  function is (node, tagNames) {
    return tagNames.indexOf(node.nodeName) >= 0
  }

  function has (node, tagNames) {
    return (
      node.getElementsByTagName &&
      tagNames.some(function (tagName) {
        return node.getElementsByTagName(tagName).length
      })
    )
  }

  var rules = {};

  rules.paragraph = {
    filter: 'p',

    replacement: function (content) {
      return '\n\n' + content + '\n\n'
    }
  };

  rules.lineBreak = {
    filter: 'br',

    replacement: function (content, node, options) {
      return options.br + '\n'
    }
  };

  rules.heading = {
    filter: ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'],

    replacement: function (content, node, options) {
      var hLevel = Number(node.nodeName.charAt(1));

      if (options.headingStyle === 'setext' && hLevel < 3) {
        var underline = repeat((hLevel === 1 ? '=' : '-'), content.length);
        return (
          '\n\n' + content + '\n' + underline + '\n\n'
        )
      } else {
        return '\n\n' + repeat('#', hLevel) + ' ' + content + '\n\n'
      }
    }
  };

  rules.blockquote = {
    filter: 'blockquote',

    replacement: function (content) {
      content = content.replace(/^\n+|\n+$/g, '');
      content = content.replace(/^/gm, '> ');
      return '\n\n' + content + '\n\n'
    }
  };

  rules.list = {
    filter: ['ul', 'ol'],

    replacement: function (content, node) {
      var parent = node.parentNode;
      if (parent.nodeName === 'LI' && parent.lastElementChild === node) {
        return '\n' + content
      } else {
        return '\n\n' + content + '\n\n'
      }
    }
  };

  rules.listItem = {
    filter: 'li',

    replacement: function (content, node, options) {
      content = content
        .replace(/^\n+/, '') // remove leading newlines
        .replace(/\n+$/, '\n') // replace trailing newlines with just a single one
        .replace(/\n/gm, '\n    '); // indent
      var prefix = options.bulletListMarker + '   ';
      var parent = node.parentNode;
      if (parent.nodeName === 'OL') {
        var start = parent.getAttribute('start');
        var index = Array.prototype.indexOf.call(parent.children, node);
        prefix = (start ? Number(start) + index : index + 1) + '.  ';
      }
      return (
        prefix + content + (node.nextSibling && !/\n$/.test(content) ? '\n' : '')
      )
    }
  };

  rules.indentedCodeBlock = {
    filter: function (node, options) {
      return (
        options.codeBlockStyle === 'indented' &&
        node.nodeName === 'PRE' &&
        node.firstChild &&
        node.firstChild.nodeName === 'CODE'
      )
    },

    replacement: function (content, node, options) {
      return (
        '\n\n    ' +
        node.firstChild.textContent.replace(/\n/g, '\n    ') +
        '\n\n'
      )
    }
  };

  rules.fencedCodeBlock = {
    filter: function (node, options) {
      return (
        options.codeBlockStyle === 'fenced' &&
        node.nodeName === 'PRE' &&
        node.firstChild &&
        node.firstChild.nodeName === 'CODE'
      )
    },

    replacement: function (content, node, options) {
      var className = node.firstChild.getAttribute('class') || '';
      var language = (className.match(/language-(\S+)/) || [null, ''])[1];
      var code = node.firstChild.textContent;

      var fenceChar = options.fence.charAt(0);
      var fenceSize = 3;
      var fenceInCodeRegex = new RegExp('^' + fenceChar + '{3,}', 'gm');

      var match;
      while ((match = fenceInCodeRegex.exec(code))) {
        if (match[0].length >= fenceSize) {
          fenceSize = match[0].length + 1;
        }
      }

      var fence = repeat(fenceChar, fenceSize);

      return (
        '\n\n' + fence + language + '\n' +
        code.replace(/\n$/, '') +
        '\n' + fence + '\n\n'
      )
    }
  };

  rules.horizontalRule = {
    filter: 'hr',

    replacement: function (content, node, options) {
      return '\n\n' + options.hr + '\n\n'
    }
  };

  rules.inlineLink = {
    filter: function (node, options) {
      return (
        options.linkStyle === 'inlined' &&
        node.nodeName === 'A' &&
        node.getAttribute('href')
      )
    },

    replacement: function (content, node) {
      var href = node.getAttribute('href');
      var title = cleanAttribute(node.getAttribute('title'));
      if (title) title = ' "' + title + '"';
      return '[' + content + '](' + href + title + ')'
    }
  };

  rules.referenceLink = {
    filter: function (node, options) {
      return (
        options.linkStyle === 'referenced' &&
        node.nodeName === 'A' &&
        node.getAttribute('href')
      )
    },

    replacement: function (content, node, options) {
      var href = node.getAttribute('href');
      var title = cleanAttribute(node.getAttribute('title'));
      if (title) title = ' "' + title + '"';
      var replacement;
      var reference;

      switch (options.linkReferenceStyle) {
        case 'collapsed':
          replacement = '[' + content + '][]';
          reference = '[' + content + ']: ' + href + title;
          break
        case 'shortcut':
          replacement = '[' + content + ']';
          reference = '[' + content + ']: ' + href + title;
          break
        default:
          var id = this.references.length + 1;
          replacement = '[' + content + '][' + id + ']';
          reference = '[' + id + ']: ' + href + title;
      }

      this.references.push(reference);
      return replacement
    },

    references: [],

    append: function (options) {
      var references = '';
      if (this.references.length) {
        references = '\n\n' + this.references.join('\n') + '\n\n';
        this.references = []; // Reset references
      }
      return references
    }
  };

  rules.emphasis = {
    filter: ['em', 'i'],

    replacement: function (content, node, options) {
      if (!content.trim()) return ''
      return options.emDelimiter + content + options.emDelimiter
    }
  };

  rules.strong = {
    filter: ['strong', 'b'],

    replacement: function (content, node, options) {
      if (!content.trim()) return ''
      return options.strongDelimiter + content + options.strongDelimiter
    }
  };

  rules.code = {
    filter: function (node) {
      var hasSiblings = node.previousSibling || node.nextSibling;
      var isCodeBlock = node.parentNode.nodeName === 'PRE' && !hasSiblings;

      return node.nodeName === 'CODE' && !isCodeBlock
    },

    replacement: function (content) {
      if (!content) return ''
      content = content.replace(/\r?\n|\r/g, ' ');

      var extraSpace = /^`|^ .*?[^ ].* $|`$/.test(content) ? ' ' : '';
      var delimiter = '`';
      var matches = content.match(/`+/gm) || [];
      while (matches.indexOf(delimiter) !== -1) delimiter = delimiter + '`';

      return delimiter + extraSpace + content + extraSpace + delimiter
    }
  };

  rules.image = {
    filter: 'img',

    replacement: function (content, node) {
      var alt = cleanAttribute(node.getAttribute('alt'));
      var src = node.getAttribute('src') || '';
      var title = cleanAttribute(node.getAttribute('title'));
      var titlePart = title ? ' "' + title + '"' : '';
      return src ? '![' + alt + ']' + '(' + src + titlePart + ')' : ''
    }
  };

  function cleanAttribute (attribute) {
    return attribute ? attribute.replace(/(\n+\s*)+/g, '\n') : ''
  }

  /**
   * Manages a collection of rules used to convert HTML to Markdown
   */

  function Rules (options) {
    this.options = options;
    this._keep = [];
    this._remove = [];

    this.blankRule = {
      replacement: options.blankReplacement
    };

    this.keepReplacement = options.keepReplacement;

    this.defaultRule = {
      replacement: options.defaultReplacement
    };

    this.array = [];
    for (var key in options.rules) this.array.push(options.rules[key]);
  }

  Rules.prototype = {
    add: function (key, rule) {
      this.array.unshift(rule);
    },

    keep: function (filter) {
      this._keep.unshift({
        filter: filter,
        replacement: this.keepReplacement
      });
    },

    remove: function (filter) {
      this._remove.unshift({
        filter: filter,
        replacement: function () {
          return ''
        }
      });
    },

    forNode: function (node) {
      if (node.isBlank) return this.blankRule
      var rule;

      if ((rule = findRule(this.array, node, this.options))) return rule
      if ((rule = findRule(this._keep, node, this.options))) return rule
      if ((rule = findRule(this._remove, node, this.options))) return rule

      return this.defaultRule
    },

    forEach: function (fn) {
      for (var i = 0; i < this.array.length; i++) fn(this.array[i], i);
    }
  };

  function findRule (rules, node, options) {
    for (var i = 0; i < rules.length; i++) {
      var rule = rules[i];
      if (filterValue(rule, node, options)) return rule
    }
    return void 0
  }

  function filterValue (rule, node, options) {
    var filter = rule.filter;
    if (typeof filter === 'string') {
      if (filter === node.nodeName.toLowerCase()) return true
    } else if (Array.isArray(filter)) {
      if (filter.indexOf(node.nodeName.toLowerCase()) > -1) return true
    } else if (typeof filter === 'function') {
      if (filter.call(rule, node, options)) return true
    } else {
      throw new TypeError('`filter` needs to be a string, array, or function')
    }
  }

  /**
   * The collapseWhitespace function is adapted from collapse-whitespace
   * by Luc Thevenard.
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2014 Luc Thevenard <lucthevenard@gmail.com>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */

  /**
   * collapseWhitespace(options) removes extraneous whitespace from an the given element.
   *
   * @param {Object} options
   */
  function collapseWhitespace (options) {
    var element = options.element;
    var isBlock = options.isBlock;
    var isVoid = options.isVoid;
    var isPre = options.isPre || function (node) {
      return node.nodeName === 'PRE'
    };

    if (!element.firstChild || isPre(element)) return

    var prevText = null;
    var keepLeadingWs = false;

    var prev = null;
    var node = next(prev, element, isPre);

    while (node !== element) {
      if (node.nodeType === 3 || node.nodeType === 4) { // Node.TEXT_NODE or Node.CDATA_SECTION_NODE
        var text = node.data.replace(/[ \r\n\t]+/g, ' ');

        if ((!prevText || / $/.test(prevText.data)) &&
            !keepLeadingWs && text[0] === ' ') {
          text = text.substr(1);
        }

        // `text` might be empty at this point.
        if (!text) {
          node = remove(node);
          continue
        }

        node.data = text;

        prevText = node;
      } else if (node.nodeType === 1) { // Node.ELEMENT_NODE
        if (isBlock(node) || node.nodeName === 'BR') {
          if (prevText) {
            prevText.data = prevText.data.replace(/ $/, '');
          }

          prevText = null;
          keepLeadingWs = false;
        } else if (isVoid(node) || isPre(node)) {
          // Avoid trimming space around non-block, non-BR void elements and inline PRE.
          prevText = null;
          keepLeadingWs = true;
        } else if (prevText) {
          // Drop protection if set previously.
          keepLeadingWs = false;
        }
      } else {
        node = remove(node);
        continue
      }

      var nextNode = next(prev, node, isPre);
      prev = node;
      node = nextNode;
    }

    if (prevText) {
      prevText.data = prevText.data.replace(/ $/, '');
      if (!prevText.data) {
        remove(prevText);
      }
    }
  }

  /**
   * remove(node) removes the given node from the DOM and returns the
   * next node in the sequence.
   *
   * @param {Node} node
   * @return {Node} node
   */
  function remove (node) {
    var next = node.nextSibling || node.parentNode;

    node.parentNode.removeChild(node);

    return next
  }

  /**
   * next(prev, current, isPre) returns the next node in the sequence, given the
   * current and previous nodes.
   *
   * @param {Node} prev
   * @param {Node} current
   * @param {Function} isPre
   * @return {Node}
   */
  function next (prev, current, isPre) {
    if ((prev && prev.parentNode === current) || isPre(current)) {
      return current.nextSibling || current.parentNode
    }

    return current.firstChild || current.nextSibling || current.parentNode
  }

  /*
   * Set up window for Node.js
   */

  var root = (typeof window !== 'undefined' ? window : {});

  /*
   * Parsing HTML strings
   */

  function canParseHTMLNatively () {
    var Parser = root.DOMParser;
    var canParse = false;

    // Adapted from https://gist.github.com/1129031
    // Firefox/Opera/IE throw errors on unsupported types
    try {
      // WebKit returns null on unsupported types
      if (new Parser().parseFromString('', 'text/html')) {
        canParse = true;
      }
    } catch (e) {}

    return canParse
  }

  function createHTMLParser () {
    var Parser = function () {};

    {
      if (shouldUseActiveX()) {
        Parser.prototype.parseFromString = function (string) {
          var doc = new window.ActiveXObject('htmlfile');
          doc.designMode = 'on'; // disable on-page scripts
          doc.open();
          doc.write(string);
          doc.close();
          return doc
        };
      } else {
        Parser.prototype.parseFromString = function (string) {
          var doc = document.implementation.createHTMLDocument('');
          doc.open();
          doc.write(string);
          doc.close();
          return doc
        };
      }
    }
    return Parser
  }

  function shouldUseActiveX () {
    var useActiveX = false;
    try {
      document.implementation.createHTMLDocument('').open();
    } catch (e) {
      if (window.ActiveXObject) useActiveX = true;
    }
    return useActiveX
  }


  function RootNode (input, options) {
    var root;
    if (typeof input === 'string') {
      var doc = htmlParser().parseFromString(
        // DOM parsers arrange elements in the <head> and <body>.
        // Wrapping in a custom element ensures elements are reliably arranged in
        // a single element.
        '<x-turndown id="turndown-root">' + input + '</x-turndown>',
        'text/html'
      );
      root = doc.getElementById('turndown-root');
    } else {
      root = input.cloneNode(true);
    }
    collapseWhitespace({
      element: root,
      isBlock: isBlock,
      isVoid: isVoid,
      isPre: options.preformattedCode ? isPreOrCode : null
    });

    return root
  }

  var _htmlParser;
  function htmlParser () {
    _htmlParser = _htmlParser || new HTMLParser();
    return _htmlParser
  }

  function isPreOrCode (node) {
    return node.nodeName === 'PRE' || node.nodeName === 'CODE'
  }

  function Node (node, options) {
    node.isBlock = isBlock(node);
    node.isCode = node.nodeName === 'CODE' || node.parentNode.isCode;
    node.isBlank = isBlank(node);
    node.flankingWhitespace = flankingWhitespace(node, options);
    return node
  }

  function isBlank (node) {
    return (
      !isVoid(node) &&
      !isMeaningfulWhenBlank(node) &&
      /^\s*$/i.test(node.textContent) &&
      !hasVoid(node) &&
      !hasMeaningfulWhenBlank(node)
    )
  }

  function flankingWhitespace (node, options) {
    if (node.isBlock || (options.preformattedCode && node.isCode)) {
      return { leading: '', trailing: '' }
    }

    var edges = edgeWhitespace(node.textContent);

    // abandon leading ASCII WS if left-flanked by ASCII WS
    if (edges.leadingAscii && isFlankedByWhitespace('left', node, options)) {
      edges.leading = edges.leadingNonAscii;
    }

    // abandon trailing ASCII WS if right-flanked by ASCII WS
    if (edges.trailingAscii && isFlankedByWhitespace('right', node, options)) {
      edges.trailing = edges.trailingNonAscii;
    }

    return { leading: edges.leading, trailing: edges.trailing }
  }

  function edgeWhitespace (string) {
    var m = string.match(/^(([ \t\r\n]*)(\s*))[\s\S]*?((\s*?)([ \t\r\n]*))$/);
    return {
      leading: m[1], // whole string for whitespace-only strings
      leadingAscii: m[2],
      leadingNonAscii: m[3],
      trailing: m[4], // empty for whitespace-only strings
      trailingNonAscii: m[5],
      trailingAscii: m[6]
    }
  }

  function isFlankedByWhitespace (side, node, options) {
    var sibling;
    var regExp;
    var isFlanked;

    if (side === 'left') {
      sibling = node.previousSibling;
      regExp = / $/;
    } else {
      sibling = node.nextSibling;
      regExp = /^ /;
    }

    if (sibling) {
      if (sibling.nodeType === 3) {
        isFlanked = regExp.test(sibling.nodeValue);
      } else if (options.preformattedCode && sibling.nodeName === 'CODE') {
        isFlanked = false;
      } else if (sibling.nodeType === 1 && !isBlock(sibling)) {
        isFlanked = regExp.test(sibling.textContent);
      }
    }
    return isFlanked
  }

  var reduce = Array.prototype.reduce;
  var escapes = [
    [/\\/g, '\\\\'],
    [/\*/g, '\\*'],
    [/^-/g, '\\-'],
    [/^\+ /g, '\\+ '],
    [/^(=+)/g, '\\$1'],
    [/^(#{1,6}) /g, '\\$1 '],
    [/`/g, '\\`'],
    [/^~~~/g, '\\~~~'],
    [/\[/g, '\\['],
    [/\]/g, '\\]'],
    [/^>/g, '\\>'],
    [/_/g, '\\_'],
    [/^(\d+)\. /g, '$1\\. ']
  ];

  function TurndownService (options) {
    if (!(this instanceof TurndownService)) return new TurndownService(options)

    var defaults = {
      rules: rules,
      headingStyle: 'setext',
      hr: '* * *',
      bulletListMarker: '*',
      codeBlockStyle: 'indented',
      fence: '```',
      emDelimiter: '_',
      strongDelimiter: '**',
      linkStyle: 'inlined',
      linkReferenceStyle: 'full',
      br: '  ',
      preformattedCode: false,
      blankReplacement: function (content, node) {
        return node.isBlock ? '\n\n' : ''
      },
      keepReplacement: function (content, node) {
        return node.isBlock ? '\n\n' + node.outerHTML + '\n\n' : node.outerHTML
      },
      defaultReplacement: function (content, node) {
        return node.isBlock ? '\n\n' + content + '\n\n' : content
      }
    };
    this.options = extend({}, defaults, options);
    this.rules = new Rules(this.options);
  }

  TurndownService.prototype = {
    /**
     * The entry point for converting a string or DOM node to Markdown
     * @public
     * @param {String|HTMLElement} input The string or DOM node to convert
     * @returns A Markdown representation of the input
     * @type String
     */

    turndown: function (input) {
      if (!canConvert(input)) {
        throw new TypeError(
          input + ' is not a string, or an element/document/fragment node.'
        )
      }

      if (input === '') return ''

      var output = process.call(this, new RootNode(input, this.options));
      return postProcess.call(this, output)
    },

    /**
     * Add one or more plugins
     * @public
     * @param {Function|Array} plugin The plugin or array of plugins to add
     * @returns The Turndown instance for chaining
     * @type Object
     */

    use: function (plugin) {
      if (Array.isArray(plugin)) {
        for (var i = 0; i < plugin.length; i++) this.use(plugin[i]);
      } else if (typeof plugin === 'function') {
        plugin(this);
      } else {
        throw new TypeError('plugin must be a Function or an Array of Functions')
      }
      return this
    },

    /**
     * Adds a rule
     * @public
     * @param {String} key The unique key of the rule
     * @param {Object} rule The rule
     * @returns The Turndown instance for chaining
     * @type Object
     */

    addRule: function (key, rule) {
      this.rules.add(key, rule);
      return this
    },

    /**
     * Keep a node (as HTML) that matches the filter
     * @public
     * @param {String|Array|Function} filter The unique key of the rule
     * @returns The Turndown instance for chaining
     * @type Object
     */

    keep: function (filter) {
      this.rules.keep(filter);
      return this
    },

    /**
     * Remove a node that matches the filter
     * @public
     * @param {String|Array|Function} filter The unique key of the rule
     * @returns The Turndown instance for chaining
     * @type Object
     */

    remove: function (filter) {
      this.rules.remove(filter);
      return this
    },

    /**
     * Escapes Markdown syntax
     * @public
     * @param {String} string The string to escape
     * @returns A string with Markdown syntax escaped
     * @type String
     */

    escape: function (string) {
      return escapes.reduce(function (accumulator, escape) {
        return accumulator.replace(escape[0], escape[1])
      }, string)
    }
  };

  /**
   * Reduces a DOM node down to its Markdown string equivalent
   * @private
   * @param {HTMLElement} parentNode The node to convert
   * @returns A Markdown representation of the node
   * @type String
   */

  function process (parentNode) {
    var self = this;
    return reduce.call(parentNode.childNodes, function (output, node) {
      node = new Node(node, self.options);

      var replacement = '';
      if (node.nodeType === 3) {
        replacement = node.isCode ? node.nodeValue : self.escape(node.nodeValue);
      } else if (node.nodeType === 1) {
        replacement = replacementForNode.call(self, node);
      }

      return join(output, replacement)
    }, '')
  }

  /**
   * Appends strings as each rule requires and trims the output
   * @private
   * @param {String} output The conversion output
   * @returns A trimmed version of the ouput
   * @type String
   */

  function postProcess (output) {
    var self = this;
    this.rules.forEach(function (rule) {
      if (typeof rule.append === 'function') {
        output = join(output, rule.append(self.options));
      }
    });

    return output.replace(/^[\t\r\n]+/, '').replace(/[\t\r\n\s]+$/, '')
  }

  /**
   * Converts an element node to its Markdown equivalent
   * @private
   * @param {HTMLElement} node The node to convert
   * @returns A Markdown representation of the node
   * @type String
   */

  function replacementForNode (node) {
    var rule = this.rules.forNode(node);
    var content = process.call(this, node);
    var whitespace = node.flankingWhitespace;
    if (whitespace.leading || whitespace.trailing) content = content.trim();
    return (
      whitespace.leading +
      rule.replacement(content, node, this.options) +
      whitespace.trailing
    )
  }

  /**
   * Joins replacement to the current output with appropriate number of new lines
   * @private
   * @param {String} output The current conversion output
   * @param {String} replacement The string to append to the output
   * @returns Joined output
   * @type String
   */

  function join (output, replacement) {
    var s1 = trimTrailingNewlines(output);
    var s2 = trimLeadingNewlines(replacement);
    var nls = Math.max(output.length - s1.length, replacement.length - s2.length);
    var separator = '\n\n'.substring(0, nls);

    return s1 + separator + s2
  }

  /**
   * Determines whether an input can be converted
   * @private
   * @param {String|HTMLElement} input Describe this parameter
   * @returns Describe what it returns
   * @type String|Object|Array|Boolean|Number
   */

  function canConvert (input) {
    return (
      input != null && (
        typeof input === 'string' ||
        (input.nodeType && (
          input.nodeType === 1 || input.nodeType === 9 || input.nodeType === 11
        ))
      )
    )
  }

  return TurndownService;

})));

}).call(this)}).call(this,require('_process'))
},{"_process":1}],4:[function(require,module,exports){
/*
    ***** BEGIN LICENSE BLOCK *****
    
    Copyright © 2021 Corporation for Digital Scholarship
                     Vienna, Virginia, USA
                     http://digitalscholar.org/
    
    This file is part of Zotero.
    
    Zotero is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    
    Zotero is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.
    
    You should have received a copy of the GNU Affero General Public License
    along with Zotero.  If not, see <http://www.gnu.org/licenses/>.
    
    ***** END LICENSE BLOCK *****
*/

let TurndownService = require('turndown/lib/turndown.browser.umd');
let turndownPluginGfm = require('turndown-plugin-gfm');

let turndownService = new TurndownService({
	headingStyle: 'atx',
	bulletListMarker: '-',
	emDelimiter: '*',
	codeBlockStyle: 'fenced'
});

turndownService.use(turndownPluginGfm.gfm);

// https://github.com/mixmark-io/turndown#overriding-turndownserviceprototypeescape
let escapes = [
	// [/\\/g, '\\\\'],
	[/\*/g, '\\*'],
	[/^-/g, '\\-'],
	[/^\+ /g, '\\+ '],
	[/^(=+)/g, '\\$1'],
	[/^(#{1,6}) /g, '\\$1 '],
	[/`/g, '\\`'],
	[/^~~~/g, '\\~~~'],
	// [/\[/g, '\\['],
	// [/\]/g, '\\]'],
	[/^>/g, '\\>'],
	// [/_/g, '\\_'],
	[/^(\d+)\. /g, '$1\\. '],
	// Custom corrections for the previous escapes
	// [/\\\[\\\[/g, '[['],
	// [/\\\]\\\]/g, ']]'],
	[/\\`\\`\\`/g, '```']
];

TurndownService.prototype.escape = function (string) {
	return escapes.reduce(function (accumulator, escape) {
		return accumulator.replace(escape[0], escape[1])
	}, string);
};

// https://github.com/mixmark-io/turndown/issues/291
turndownService.addRule('listItem', {
	filter: 'li',
	replacement: function (content, node, options) {
		content = content
		.replace(/^\n+/, '') // remove leading newlines
		 .replace(/\n+$/, '\n') // replace trailing newlines with just a single one
		 .replace(/\n/gm, '\n    '); // indent
		var prefix = options.bulletListMarker + ' ';
		var parent = node.parentNode;
		if (parent.nodeName === 'OL') {
			var start = parent.getAttribute('start');
			var index = Array.prototype.indexOf.call(parent.children, node);
			prefix = (start ? Number(start) + index : index + 1) + '. ';
		}
		return (
			prefix + content + (node.nextSibling && !/\n$/.test(content) ? '\n' : '')
		);
	}
});

function convert(doc) {
	// Transform `style="text-decoration: line-through"` nodes to <s> (TinyMCE doesn't support <s>)
	doc.querySelectorAll('span').forEach(function (span) {
		if (span.style.textDecoration === 'line-through') {
			let s = doc.createElement('s');
			s.append(...span.childNodes);
			span.replaceWith(s);
		}
	});

	// Turndown wants pre content inside additional code block
	doc.querySelectorAll('pre:not(.math)').forEach(function (pre) {
		let code = doc.createElement('code');
		code.append(...pre.childNodes);
		pre.append(code);
	});

	doc.querySelectorAll('p').forEach((p) => {
		let style = p.getAttribute('style');
		if (style) {
			let match = style.match(/padding-(left|right): ([0-9]+)px/);
			if (match) {
				let px = parseInt(match[2]);
				if (px > 0 && px % 40 === 0) {
					let level = px / 40;
					let spaces = '';
					for (let i = 0; i < level; i++) {
						spaces += '\u00A0\u00A0\u00A0\u00A0';
					}
					p.insertBefore(doc.createTextNode(spaces), p.firstChild);
					p.querySelectorAll('br').forEach((br) => {
						br.parentNode.insertBefore(doc.createTextNode(spaces), br.nextSibling);
					});
				}
			}
		}
	});
	
	// Insert a PDF link for highlight, underline and image annotation nodes
	doc.querySelectorAll('span[class="highlight"], span[class="underline"], img[data-annotation]').forEach(function (node) {
		try {
			var annotation = JSON.parse(decodeURIComponent(node.getAttribute('data-annotation')));
		}
		catch (e) {
		}

		if (annotation) {
			// annotation.uri was used before note-editor v4
			let uri = annotation.attachmentURI || annotation.uri;
			let position = annotation.position;
			if (Zotero.getOption("includeAppLinks")
				&& typeof uri === 'string'
				&& typeof position === 'object') {
				let openURI;
				let uriParts = uri.split('/');
				let libraryType = uriParts[3];
				let key = uriParts[uriParts.length - 1];
				if (libraryType === 'users') {
					openURI = 'zotero://open-pdf/library/items/' + key;
				}
				// groups
				else {
					let groupID = uriParts[4];
					openURI = 'zotero://open-pdf/groups/' + groupID + '/items/' + key;
				}
				
				let linkText;
				if (position.type === 'FragmentSelector') {
					openURI += '?cfi=' + encodeURIComponent(position.value);
					linkText = 'epub';
				}
				else if (position.type === 'CssSelector') {
					openURI += '?sel=' + encodeURIComponent(position.value);
					linkText = 'snapshot';
				}
				else {
					openURI += '?page=' + (position.pageIndex + 1);
					linkText = 'pdf';
				}
				if (annotation.annotationKey) {
					openURI += '&annotation=' + annotation.annotationKey;
				}

				let a = doc.createElement('a');
				a.href = openURI;
				a.append(linkText);
				let fragment = doc.createDocumentFragment();
				fragment.append(' (', a, ') ');
				
				let nextNode = node.nextElementSibling;
				if (nextNode && nextNode.classList.contains('citation')) {
					nextNode.parentNode.insertBefore(fragment, nextNode.nextSibling);
				}
				else {
					node.parentNode.insertBefore(fragment, node.nextSibling);
				}
			}
		}
	});
	
	// For now just insert a placeholder for embedded note images
	doc.querySelectorAll('img[data-attachment-key]').forEach(function (img) {
		img.replaceWith(doc.createTextNode('[image]'));
	});

	// Transform citations to links
	doc.querySelectorAll('span[class="citation"]').forEach(function (span) {
		try {
			var citation = JSON.parse(decodeURIComponent(span.getAttribute('data-citation')));
		}
		catch (e) {
		}

		if (citation && citation.citationItems && citation.citationItems.length) {
			let uris = [];
			for (let citationItem of citation.citationItems) {
				let uri = citationItem.uris[0];
				if (typeof uri === 'string') {
					let uriParts = uri.split('/');
					let libraryType = uriParts[3];
					let key = uriParts[uriParts.length - 1];
					if (libraryType === 'users') {
						uris.push('zotero://select/library/items/' + key);
					}
					// groups
					else {
						let groupID = uriParts[4];
						uris.push('zotero://select/groups/' + groupID + '/items/' + key);
					}
				}
			}

			let items = Array.from(span.querySelectorAll('.citation-item')).map(x => x.textContent);
			// Fallback to pre v5 note-editor schema that was serializing citations as plain text i.e.:
			// <span class="citation" data-citation="...">(Jang et al., 2005, p. 14; Kongsgaard et al., 2009, p. 790)</span>
			if (!items.length) {
				items = span.textContent.slice(1, -1).split('; ');
			}

			span.innerHTML = '(' + items.map((item, i) => {
				return Zotero.getOption('includeAppLinks')
					? `<a href="${uris[i]}">${item}</a>`
					: item
			}).join('; ') + ')';
		}
	});

	let text = turndownService.turndown(doc.body);

	// Remove lines with just two spaces which happens for `<p><br>test</p>`
	text = text.split('\n').filter((line) => line !== '  ').join('\n');
	return text;
}

bundle = { convert };

},{"turndown-plugin-gfm":2,"turndown/lib/turndown.browser.umd":3}]},{},[4]);

function doExport() {
	Zotero.setCharacterSet('utf-8');
	let item;
	let first = true;
	while (item = Zotero.nextItem()) {
		if (item.itemType === 'note' || item.itemType === 'attachment') {
			let doc = new DOMParser().parseFromString(item.note || '', 'text/html');
			// Skip empty notes
			// TODO: Take into account image-only notes
			if (!doc.body.textContent.trim()) {
				continue;
			}
			if (!first) {
				Zotero.write('\n\n---\n\n');
			}
			first = false;
			Zotero.write(bundle.convert(doc));
		}
	}
}