/*jslint indent: 2, browser: true, bitwise: true, plusplus: true */

var twemoji = (function (

  /*! Copyright Twitter Inc. and other contributors. Licensed under MIT *//*

    https://github.com/twitter/twemoji/blob/gh-pages/LICENSE

  */

  // WARNING:   this file is generated automatically via

  //            `node scripts/build.js`

  //            please update its `createTwemoji` function

  //            at the bottom of the same file instead.

) {

  'use strict';

  /*jshint maxparams:4 */

  var

    // the exported module object

    twemoji = {

    /////////////////////////

    //      properties     //

    /////////////////////////

      // default assets url, by default will be Twitter Inc. CDN

      // default assets file extensions, by default '.png'

      ext: '.png',

      // default assets/folder size, by default "72x72"

      // available via Twitter CDN: 72

      size: '72x72',

      // default class name, by default 'emoji'

      className: 'emoji',

      // basic utilities / helpers to convert code points

      // to JavaScript surrogates and vice versa

      convert: {

        /**

         * Given an HEX codepoint, returns UTF16 surrogate pairs.

         *

         * @param   string  generic codepoint, i.e. '1F4A9'

         * @return  string  codepoint transformed into utf16 surrogates pair,

         *          i.e. \uD83D\uDCA9

         *

         * @example

         *  twemoji.convert.fromCodePoint('1f1e8');

         *  // "\ud83c\udde8"

         *

         *  '1f1e8-1f1f3'.split('-').map(twemoji.convert.fromCodePoint).join('')

         *  // "\ud83c\udde8\ud83c\uddf3"

         */

        fromCodePoint: fromCodePoint,

        /**

         * Given UTF16 surrogate pairs, returns the equivalent HEX codepoint.

         *

         * @param   string  generic utf16 surrogates pair, i.e. \uD83D\uDCA9

         * @param   string  optional separator for double code points, default='-'

         * @return  string  utf16 transformed into codepoint, i.e. '1F4A9'

         *

         * @example

         *  twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3');

         *  // "1f1e8-1f1f3"

         *

         *  twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3', '~');

         *  // "1f1e8~1f1f3"

         */

        toCodePoint: toCodePoint

      },

    /////////////////////////

    //       methods       //

    /////////////////////////

      /**

       * User first: used to remove missing images

       * preserving the original text intent when

       * a fallback for network problems is desired.

       * Automatically added to Image nodes via DOM

       * It could be recycled for string operations via:

       *  $('img.emoji').on('error', twemoji.onerror)

       */

      onerror: function onerror() {

        if (this.parentNode) {

          this.parentNode.replaceChild(createText(this.alt, false), this);

        }

      },

      /**

       * Main method/logic to generate either <img> tags or HTMLImage nodes.

       *  "emojify" a generic text or DOM Element.

       *

       * @overloads

       *

       * String replacement for `innerHTML` or server side operations

       *  twemoji.parse(string);

       *  twemoji.parse(string, Function);

       *  twemoji.parse(string, Object);

       *

       * HTMLElement tree parsing for safer operations over existing DOM

       *  twemoji.parse(HTMLElement);

       *  twemoji.parse(HTMLElement, Function);

       *  twemoji.parse(HTMLElement, Object);

       *

       * @param   string|HTMLElement  the source to parse and enrich with emoji.

       *

       *          string              replace emoji matches with <img> tags.

       *                              Mainly used to inject emoji via `innerHTML`

       *                              It does **not** parse the string or validate it,

       *                              it simply replaces found emoji with a tag.

       *                              NOTE: be sure this won't affect security.

       *

       *          HTMLElement         walk through the DOM tree and find emoji

       *                              that are inside **text node only** (nodeType === 3)

       *                              Mainly used to put emoji in already generated DOM

       *                              without compromising surrounding nodes and

       *                              **avoiding** the usage of `innerHTML`.

       *                              NOTE: Using DOM elements instead of strings should

       *                              improve security without compromising too much

       *                              performance compared with a less safe `innerHTML`.

       *

       * @param   Function|Object  [optional]

       *                              either the callback that will be invoked or an object

       *                              with all properties to use per each found emoji.

       *

       *          Function            if specified, this will be invoked per each emoji

       *                              that has been found through the RegExp except

       *                              those follwed by the invariant \uFE0E ("as text").

       *                              Once invoked, parameters will be:

       *

       *                                iconId:string     the lower case HEX code point

       *                                                  i.e. "1f4a9"

       *

       *                                options:Object    all info for this parsing operation

       *

       *                                variant:char      the optional \uFE0F ("as image")

       *                                                  variant, in case this info

       *                                                  is anyhow meaningful.

       *                                                  By default this is ignored.

       *

       *                              If such callback will return a falsy value instead

       *                              of a valid `src` to use for the image, nothing will

       *                              actually change for that specific emoji.

       *

       *

       *          Object              if specified, an object containing the following properties

       *

       *            callback   Function  the callback to invoke per each found emoji.

       *            base       string    the base url, by default twemoji.base

       *            ext        string    the image extension, by default twemoji.ext

       *            size       string    the assets size, by default twemoji.size

       *

       * @example

       *

       *  twemoji.parse("I \u2764\uFE0F emoji!");

       *  // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"/> emoji!

       *

       *

       *  twemoji.parse("I \u2764\uFE0F emoji!", function(iconId, options) {

       *    return '/assets/' + iconId + '.gif';

       *  });

       *  // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"/> emoji!

       *

       *

       * twemoji.parse("I \u2764\uFE0F emoji!", {

       *   size: 72,

       *   callback: function(iconId, options) {

       *     return '/assets/' + options.size + '/' + iconId + options.ext;

       *   }

       * });

       *  // I <img class="emoji" draggable="false" alt="❤️" src="/assets/72x72/2764.png"/> emoji!

       *

       */

      parse: parse,

      /**

       * Given a string, invokes the callback argument

       *  per each emoji found in such string.

       * This is the most raw version used by

       *  the .parse(string) method itself.

       *

       * @param   string    generic string to parse

       * @param   Function  a generic callback that will be

       *                    invoked to replace the content.

       *                    This callback will receive standard

       *                    String.prototype.replace(str, callback)

       *                    arguments such:

       *  callback(

       *    rawText,  // the emoji match

       *  );

       *

       *                    and others commonly received via replace.

       */

      replace: replace,

      /**

       * Simplify string tests against emoji.

       *

       * @param   string  some text that might contain emoji

       * @return  boolean true if any emoji was found, false otherwise.

       *

       * @example

       *

       *  if (twemoji.test(someContent)) {

       *    console.log("emoji All The Things!");

       *  }

       */

      test: test

    },

    // used to escape HTML special chars in attributes

    escaper = {

      '&': '&',

      '<': '&lt;',

      '>': '>',

      "'": ''',

      '"': '"'

    },

    // RegExp based on emoji's official Unicode standards

    // http://www.unicode.org/Public/UNIDATA/EmojiSources.txt

    // avoid runtime RegExp creation for not so smart,

    // not JIT based, and old browsers / engines

    UFE0Fg = /\uFE0F/g,

    // avoid using a string literal like '\u200D' here because minifiers expand it inline

    U200D = String.fromCharCode(0x200D),

    // used to find HTML special chars in attributes

    rescaper = /[&<>'"]/g,

    // nodes with type 1 which should **not** be parsed

    shouldntBeParsed = /^(?:iframe|noframes|noscript|script|select|style|textarea)$/,

    // just a private shortcut

    fromCharCode = String.fromCharCode;

  return twemoji;

  /////////////////////////

  //  private functions  //

  //     declaration     //

  /////////////////////////

  /**

   * Shortcut to create text nodes

   * @param   string  text used to create DOM text node

   * @return  Node  a DOM node with that text

   */

  function createText(text, clean) {

    return document.createTextNode(clean ? text.replace(UFE0Fg, '') : text);

  }

  /**

   * Utility function to escape html attribute text

   * @param   string  text use in HTML attribute

   * @return  string  text encoded to use in HTML attribute

   */

  function escapeHTML(s) {

    return s.replace(rescaper, replacer);

  }

  /**

   * Default callback used to generate emoji src

   *  based on Twitter CDN

   * @param   string    the emoji codepoint string

   * @param   string    the default size to use, i.e. "36x36"

   * @return  string    the image source to use

   */

  function defaultImageSrcGenerator(icon, options) {

    return ''.concat(options.base, options.size, '/', icon, options.ext);

  }

  /**

   * Given a generic DOM nodeType 1, walk through all children

   * and store every nodeType 3 (#text) found in the tree.

   * @param   Element a DOM Element with probably some text in it

   * @param   Array the list of previously discovered text nodes

   * @return  Array same list with new discovered nodes, if any

   */

  function grabAllTextNodes(node, allText) {

    var

      childNodes = node.childNodes,

      length = childNodes.length,

      subnode,

      nodeType;

    while (length--) {

      subnode = childNodes[length];

      nodeType = subnode.nodeType;

      // parse emoji only in text nodes

      if (nodeType === 3) {

        // collect them to process emoji later

        allText.push(subnode);

      }

      // ignore all nodes that are not type 1, that are svg, or that

      // should not be parsed as script, style, and others

      else if (nodeType === 1 && !('ownerSVGElement' in subnode) &&

          !shouldntBeParsed.test(subnode.nodeName.toLowerCase())) {

        grabAllTextNodes(subnode, allText);

      }

    }

    return allText;

  }

  /**

   * Used to both remove the possible variant

   *  and to convert utf16 into code points.

   *  If there is a zero-width-joiner (U+200D), leave the variants in.

   * @param   string    the raw text of the emoji match

   * @return  string    the code point

   */

  function grabTheRightIcon(rawText) {

    // if variant is present as \uFE0F

    return toCodePoint(rawText.indexOf(U200D) < 0 ?

      rawText.replace(UFE0Fg, '') :

      rawText

    );

  }

  /**

   * DOM version of the same logic / parser:

   *  emojify all found sub-text nodes placing images node instead.

   * @param   Element   generic DOM node with some text in some child node

   * @param   Object    options  containing info about how to parse

    *

    *            .callback   Function  the callback to invoke per each found emoji.

    *            .base       string    the base url, by default twemoji.base

    *            .ext        string    the image extension, by default twemoji.ext

    *            .size       string    the assets size, by default twemoji.size

    *

   * @return  Element same generic node with emoji in place, if any.

   */

  function parseNode(node, options) {

    var

      allText = grabAllTextNodes(node, []),

      length = allText.length,

      attrib,

      attrname,

      modified,

      fragment,

      subnode,

      text,

      match,

      i,

      index,

      img,

      rawText,

      iconId,

      src;

    while (length--) {

      modified = false;

      fragment = document.createDocumentFragment();

      subnode = allText[length];

      text = subnode.nodeValue;

      i = 0;

      while ((match = re.exec(text))) {

        index = match.index;

        if (index !== i) {

          fragment.appendChild(

            createText(text.slice(i, index), true)

          );

        }

        rawText = match[0];

        iconId = grabTheRightIcon(rawText);

        i = index + rawText.length;

        src = options.callback(iconId, options);

        if (iconId && src) {

          img = new Image();

          img.onerror = options.onerror;

          img.setAttribute('draggable', 'false');

          attrib = options.attributes(rawText, iconId);

          for (attrname in attrib) {

            if (

              attrib.hasOwnProperty(attrname) &&

              // don't allow any handlers to be set + don't allow overrides

              attrname.indexOf('on') !== 0 &&

              !img.hasAttribute(attrname)

            ) {

              img.setAttribute(attrname, attrib[attrname]);

            }

          }

          img.className = options.className;

          img.alt = rawText;

          img.src = src;

          modified = true;

          fragment.appendChild(img);

        }

        if (!img) fragment.appendChild(createText(rawText, false));

        img = null;

      }

      // is there actually anything to replace in here ?

      if (modified) {

        // any text left to be added ?

        if (i < text.length) {

          fragment.appendChild(

            createText(text.slice(i), true)

          );

        }

        // replace the text node only, leave intact

        // anything else surrounding such text

        subnode.parentNode.replaceChild(fragment, subnode);

      }

    }

    return node;

  }

  /**

   * String/HTML version of the same logic / parser:

   *  emojify a generic text placing images tags instead of surrogates pair.

   * @param   string    generic string with possibly some emoji in it

   * @param   Object    options  containing info about how to parse

   *

   *            .callback   Function  the callback to invoke per each found emoji.

   *            .base       string    the base url, by default twemoji.base

   *            .ext        string    the image extension, by default twemoji.ext

   *            .size       string    the assets size, by default twemoji.size

   *

   * @return  the string with <img tags> replacing all found and parsed emoji

   */

  function parseString(str, options) {

    return replace(str, function (rawText) {