Move flavours/glitch/utils/emoji back to flavours/glitch/features/emoji

app/javascript/flavours/glitch/features/emoji/emoji.js

@@ -0,0 +1,116 @@
+import { autoPlayGif, useSystemEmojiFont } from 'flavours/glitch/initial_state';
+import unicodeMapping from './emoji_unicode_mapping_light';
+import { assetHost } from 'flavours/glitch/utils/config';
+import Trie from 'substring-trie';
+
+const trie = new Trie(Object.keys(unicodeMapping));
+
+// Convert to file names from emojis. (For different variation selector emojis)
+const emojiFilenames = (emojis) => {
+  return emojis.map(v => unicodeMapping[v].filename);
+};
+
+// Emoji requiring extra borders depending on theme
+const darkEmoji = emojiFilenames(['🎱', '🐜', '⚫', '🖤', '⬛', '◼️', '◾', '◼️', '✒️', '▪️', '💣', '🎳', '📷', '📸', '♣️', '🕶️', '✴️', '🔌', '💂‍♀️', '📽️', '🍳', '🦍', '💂', '🔪', '🕳️', '🕹️', '🕋', '🖊️', '🖋️', '💂‍♂️', '🎤', '🎓', '🎥', '🎼', '♠️', '🎩', '🦃', '📼', '📹', '🎮', '🐃', '🏴', '🐞', '🕺', '📱', '📲', '🚲']);
+const lightEmoji = emojiFilenames(['👽', '⚾', '🐔', '☁️', '💨', '🕊️', '👀', '🍥', '👻', '🐐', '❕', '❔', '⛸️', '🌩️', '🔊', '🔇', '📃', '🌧️', '🐏', '🍚', '🍙', '🐓', '🐑', '💀', '☠️', '🌨️', '🔉', '🔈', '💬', '💭', '🏐', '🏳️', '⚪', '⬜', '◽', '◻️', '▫️']);
+
+const emojiFilename = (filename) => {
+  const borderedEmoji = (document.body && document.body.classList.contains('skin-mastodon-light')) ? lightEmoji : darkEmoji;
+  return borderedEmoji.includes(filename) ? (filename + '_border') : filename;
+};
+
+const emojify = (str, customEmojis = {}) => {
+  const tagCharsWithoutEmojis = '<&';
+  const tagCharsWithEmojis = Object.keys(customEmojis).length ? '<&:' : '<&';
+  let rtn = '', tagChars = tagCharsWithEmojis, invisible = 0;
+  for (;;) {
+    let match, i = 0, tag;
+    while (i < str.length && (tag = tagChars.indexOf(str[i])) === -1 && (invisible || useSystemEmojiFont || !(match = trie.search(str.slice(i))))) {
+      i += str.codePointAt(i) < 65536 ? 1 : 2;
+    }
+    let rend, replacement = '';
+    if (i === str.length) {
+      break;
+    } else if (str[i] === ':') {
+      if (!(() => {
+        rend = str.indexOf(':', i + 1) + 1;
+        if (!rend) return false; // no pair of ':'
+        const lt = str.indexOf('<', i + 1);
+        if (!(lt === -1 || lt >= rend)) return false; // tag appeared before closing ':'
+        const shortname = str.slice(i, rend);
+        // now got a replacee as ':shortname:'
+        // if you want additional emoji handler, add statements below which set replacement and return true.
+        if (shortname in customEmojis) {
+          const filename = autoPlayGif ? customEmojis[shortname].url : customEmojis[shortname].static_url;
+          replacement = `<img draggable="false" class="emojione custom-emoji" alt="${shortname}" title="${shortname}" src="${filename}" data-original="${customEmojis[shortname].url}" data-static="${customEmojis[shortname].static_url}" />`;
+          return true;
+        }
+        return false;
+      })()) rend = ++i;
+    } else if (tag >= 0) { // <, &
+      rend = str.indexOf('>;'[tag], i + 1) + 1;
+      if (!rend) {
+        break;
+      }
+      if (tag === 0) {
+        if (invisible) {
+          if (str[i + 1] === '/') { // closing tag
+            if (!--invisible) {
+              tagChars = tagCharsWithEmojis;
+            }
+          } else if (str[rend - 2] !== '/') { // opening tag
+            invisible++;
+          }
+        } else {
+          if (str.startsWith('<span class="invisible">', i)) {
+            // avoid emojifying on invisible text
+            invisible = 1;
+            tagChars = tagCharsWithoutEmojis;
+          }
+        }
+      }
+      i = rend;
+    } else if (!useSystemEmojiFont) { // matched to unicode emoji
+      const { filename, shortCode } = unicodeMapping[match];
+      const title = shortCode ? `:${shortCode}:` : '';
+      replacement = `<img draggable="false" class="emojione" alt="${match}" title="${title}" src="${assetHost}/emoji/${emojiFilename(filename)}.svg" />`;
+      rend = i + match.length;
+      // If the matched character was followed by VS15 (for selecting text presentation), skip it.
+      if (str.codePointAt(rend) === 65038) {
+        rend += 1;
+      }
+    }
+    rtn += str.slice(0, i) + replacement;
+    str = str.slice(rend);
+  }
+  return rtn + str;
+};
+
+export default emojify;
+export { unicodeMapping };
+
+export const buildCustomEmojis = (customEmojis) => {
+  const emojis = [];
+
+  customEmojis.forEach(emoji => {
+    const shortcode = emoji.get('shortcode');
+    const url       = autoPlayGif ? emoji.get('url') : emoji.get('static_url');
+    const name      = shortcode.replace(':', '');
+
+    emojis.push({
+      id: name,
+      name,
+      short_names: [name],
+      text: '',
+      emoticons: [],
+      keywords: [name],
+      imageUrl: url,
+      custom: true,
+      customCategory: emoji.get('category'),
+    });
+  });
+
+  return emojis;
+};
+
+export const categoriesFromEmojis = customEmojis => customEmojis.reduce((set, emoji) => set.add(emoji.get('category') ? `custom-${emoji.get('category')}` : 'custom'), new Set(['custom']));

app/javascript/flavours/glitch/features/emoji/emoji_compressed.js

@@ -0,0 +1,122 @@
+// @preval
+// http://www.unicode.org/Public/emoji/5.0/emoji-test.txt
+// This file contains the compressed version of the emoji data from
+// both emoji_map.json and from emoji-mart's emojiIndex and data objects.
+// It's designed to be emitted in an array format to take up less space
+// over the wire.
+
+const { unicodeToFilename } = require('./unicode_to_filename');
+const { unicodeToUnifiedName } = require('./unicode_to_unified_name');
+const emojiMap = require('./emoji_map.json');
+const { emojiIndex } = require('emoji-mart');
+const { uncompress: emojiMartUncompress } = require('emoji-mart/dist/utils/data');
+
+let data = require('emoji-mart/data/all.json');
+
+if(data.compressed) {
+  data = emojiMartUncompress(data);
+}
+
+const emojiMartData = data;
+
+const excluded       = ['®', '©', '™'];
+const skinTones      = ['🏻', '🏼', '🏽', '🏾', '🏿'];
+const shortcodeMap   = {};
+
+const shortCodesToEmojiData = {};
+const emojisWithoutShortCodes = [];
+
+Object.keys(emojiIndex.emojis).forEach(key => {
+  let emoji = emojiIndex.emojis[key];
+
+  // Emojis with skin tone modifiers are stored like this
+  if (Object.prototype.hasOwnProperty.call(emoji, '1')) {
+    emoji = emoji['1'];
+  }
+
+  shortcodeMap[emoji.native] = emoji.id;
+});
+
+const stripModifiers = unicode => {
+  skinTones.forEach(tone => {
+    unicode = unicode.replace(tone, '');
+  });
+
+  return unicode;
+};
+
+Object.keys(emojiMap).forEach(key => {
+  if (excluded.includes(key)) {
+    delete emojiMap[key];
+    return;
+  }
+
+  const normalizedKey = stripModifiers(key);
+  let shortcode       = shortcodeMap[normalizedKey];
+
+  if (!shortcode) {
+    shortcode = shortcodeMap[normalizedKey + '\uFE0F'];
+  }
+
+  const filename = emojiMap[key];
+
+  const filenameData = [key];
+
+  if (unicodeToFilename(key) !== filename) {
+    // filename can't be derived using unicodeToFilename
+    filenameData.push(filename);
+  }
+
+  if (typeof shortcode === 'undefined') {
+    emojisWithoutShortCodes.push(filenameData);
+  } else {
+    if (!Array.isArray(shortCodesToEmojiData[shortcode])) {
+      shortCodesToEmojiData[shortcode] = [[]];
+    }
+
+    shortCodesToEmojiData[shortcode][0].push(filenameData);
+  }
+});
+
+Object.keys(emojiIndex.emojis).forEach(key => {
+  let emoji = emojiIndex.emojis[key];
+
+  // Emojis with skin tone modifiers are stored like this
+  if (Object.prototype.hasOwnProperty.call(emoji, '1')) {
+    emoji = emoji['1'];
+  }
+
+  const { native } = emoji;
+  let { short_names, search, unified } = emojiMartData.emojis[key];
+
+  if (short_names[0] !== key) {
+    throw new Error('The compresser expects the first short_code to be the ' +
+      'key. It may need to be rewritten if the emoji change such that this ' +
+      'is no longer the case.');
+  }
+
+  short_names = short_names.slice(1); // first short name can be inferred from the key
+
+  const searchData = [native, short_names, search];
+
+  if (unicodeToUnifiedName(native) !== unified) {
+    // unified name can't be derived from unicodeToUnifiedName
+    searchData.push(unified);
+  }
+
+  if (!Array.isArray(shortCodesToEmojiData[key])) {
+    shortCodesToEmojiData[key] = [[]];
+  }
+
+  shortCodesToEmojiData[key].push(searchData);
+});
+
+// JSON.parse/stringify is to emulate what @preval is doing and avoid any
+// inconsistent behavior in dev mode
+module.exports = JSON.parse(JSON.stringify([
+  shortCodesToEmojiData,
+  emojiMartData.skins,
+  emojiMartData.categories,
+  emojiMartData.aliases,
+  emojisWithoutShortCodes,
+]));

app/javascript/flavours/glitch/features/emoji/emoji_mart_data_light.js

@@ -0,0 +1,41 @@
+// The output of this module is designed to mimic emoji-mart's
+// "data" object, such that we can use it for a light version of emoji-mart's
+// emojiIndex.search functionality.
+const { unicodeToUnifiedName } = require('./unicode_to_unified_name');
+const [ shortCodesToEmojiData, skins, categories, short_names ] = require('./emoji_compressed');
+
+const emojis = {};
+
+// decompress
+Object.keys(shortCodesToEmojiData).forEach((shortCode) => {
+  let [
+    filenameData, // eslint-disable-line no-unused-vars
+    searchData,
+  ] = shortCodesToEmojiData[shortCode];
+  let [
+    native,
+    short_names,
+    search,
+    unified,
+  ] = searchData;
+
+  if (!unified) {
+    // unified name can be derived from unicodeToUnifiedName
+    unified = unicodeToUnifiedName(native);
+  }
+
+  short_names = [shortCode].concat(short_names);
+  emojis[shortCode] = {
+    native,
+    search,
+    short_names,
+    unified,
+  };
+});
+
+module.exports = {
+  emojis,
+  skins,
+  categories,
+  short_names,
+};

app/javascript/flavours/glitch/features/emoji/emoji_mart_search_light.js

@@ -0,0 +1,185 @@
+// This code is largely borrowed from:
+// https://github.com/missive/emoji-mart/blob/5f2ffcc/src/utils/emoji-index.js
+
+import data from './emoji_mart_data_light';
+import { getData, getSanitizedData, uniq, intersect } from './emoji_utils';
+
+let originalPool = {};
+let index = {};
+let emojisList = {};
+let emoticonsList = {};
+let customEmojisList = [];
+
+for (let emoji in data.emojis) {
+  let emojiData = data.emojis[emoji];
+  let { short_names, emoticons } = emojiData;
+  let id = short_names[0];
+
+  if (emoticons) {
+    emoticons.forEach(emoticon => {
+      if (emoticonsList[emoticon]) {
+        return;
+      }
+
+      emoticonsList[emoticon] = id;
+    });
+  }
+
+  emojisList[id] = getSanitizedData(id);
+  originalPool[id] = emojiData;
+}
+
+function clearCustomEmojis(pool) {
+  customEmojisList.forEach((emoji) => {
+    let emojiId = emoji.id || emoji.short_names[0];
+
+    delete pool[emojiId];
+    delete emojisList[emojiId];
+  });
+}
+
+function addCustomToPool(custom, pool) {
+  if (customEmojisList.length) clearCustomEmojis(pool);
+
+  custom.forEach((emoji) => {
+    let emojiId = emoji.id || emoji.short_names[0];
+
+    if (emojiId && !pool[emojiId]) {
+      pool[emojiId] = getData(emoji);
+      emojisList[emojiId] = getSanitizedData(emoji);
+    }
+  });
+
+  customEmojisList = custom;
+  index = {};
+}
+
+function search(value, { emojisToShowFilter, maxResults, include, exclude, custom } = {}) {
+  if (custom !== undefined) {
+    if (customEmojisList !== custom)
+      addCustomToPool(custom, originalPool);
+  } else {
+    custom = [];
+  }
+
+  maxResults = maxResults || 75;
+  include = include || [];
+  exclude = exclude || [];
+
+  let results = null,
+    pool = originalPool;
+
+  if (value.length) {
+    if (value === '-' || value === '-1') {
+      return [emojisList['-1']];
+    }
+
+    let values = value.toLowerCase().split(/[\s|,\-_]+/),
+      allResults = [];
+
+    if (values.length > 2) {
+      values = [values[0], values[1]];
+    }
+
+    if (include.length || exclude.length) {
+      pool = {};
+
+      data.categories.forEach(category => {
+        let isIncluded = include && include.length ? include.indexOf(category.name.toLowerCase()) > -1 : true;
+        let isExcluded = exclude && exclude.length ? exclude.indexOf(category.name.toLowerCase()) > -1 : false;
+        if (!isIncluded || isExcluded) {
+          return;
+        }
+
+        category.emojis.forEach(emojiId => pool[emojiId] = data.emojis[emojiId]);
+      });
+
+      if (custom.length) {
+        let customIsIncluded = include && include.length ? include.indexOf('custom') > -1 : true;
+        let customIsExcluded = exclude && exclude.length ? exclude.indexOf('custom') > -1 : false;
+        if (customIsIncluded && !customIsExcluded) {
+          addCustomToPool(custom, pool);
+        }
+      }
+    }
+
+    const searchValue = (value) => {
+      let aPool = pool,
+        aIndex = index,
+        length = 0;
+
+      for (let charIndex = 0; charIndex < value.length; charIndex++) {
+        const char = value[charIndex];
+        length++;
+
+        aIndex[char] = aIndex[char] || {};
+        aIndex = aIndex[char];
+
+        if (!aIndex.results) {
+          let scores = {};
+
+          aIndex.results = [];
+          aIndex.pool = {};
+
+          for (let id in aPool) {
+            let emoji = aPool[id],
+              { search } = emoji,
+              sub = value.slice(0, length),
+              subIndex = search.indexOf(sub);
+
+            if (subIndex !== -1) {
+              let score = subIndex + 1;
+              if (sub === id) score = 0;
+
+              aIndex.results.push(emojisList[id]);
+              aIndex.pool[id] = emoji;
+
+              scores[id] = score;
+            }
+          }
+
+          aIndex.results.sort((a, b) => {
+            let aScore = scores[a.id],
+              bScore = scores[b.id];
+
+            return aScore - bScore;
+          });
+        }
+
+        aPool = aIndex.pool;
+      }
+
+      return aIndex.results;
+    };
+
+    if (values.length > 1) {
+      results = searchValue(value);
+    } else {
+      results = [];
+    }
+
+    allResults = values.map(searchValue).filter(a => a);
+
+    if (allResults.length > 1) {
+      allResults = intersect.apply(null, allResults);
+    } else if (allResults.length) {
+      allResults = allResults[0];
+    }
+
+    results = uniq(results.concat(allResults));
+  }
+
+  if (results) {
+    if (emojisToShowFilter) {
+      results = results.filter((result) => emojisToShowFilter(data.emojis[result.id]));
+    }
+
+    if (results && results.length > maxResults) {
+      results = results.slice(0, maxResults);
+    }
+  }
+
+  return results;
+}
+
+export { search };

app/javascript/flavours/glitch/features/emoji/emoji_picker.js

@@ -0,0 +1,7 @@
+import Picker from 'emoji-mart/dist-es/components/picker/picker';
+import Emoji from 'emoji-mart/dist-es/components/emoji/emoji';
+
+export {
+  Picker,
+  Emoji,
+};

app/javascript/flavours/glitch/features/emoji/emoji_unicode_mapping_light.js

@@ -0,0 +1,35 @@
+// A mapping of unicode strings to an object containing the filename
+// (i.e. the svg filename) and a shortCode intended to be shown
+// as a "title" attribute in an HTML element (aka tooltip).
+
+const [
+  shortCodesToEmojiData,
+  skins, // eslint-disable-line no-unused-vars
+  categories, // eslint-disable-line no-unused-vars
+  short_names, // eslint-disable-line no-unused-vars
+  emojisWithoutShortCodes,
+] = require('./emoji_compressed');
+const { unicodeToFilename } = require('./unicode_to_filename');
+
+// decompress
+const unicodeMapping = {};
+
+function processEmojiMapData(emojiMapData, shortCode) {
+  let [ native, filename ] = emojiMapData;
+  if (!filename) {
+    // filename name can be derived from unicodeToFilename
+    filename = unicodeToFilename(native);
+  }
+  unicodeMapping[native] = {
+    shortCode: shortCode,
+    filename: filename,
+  };
+}
+
+Object.keys(shortCodesToEmojiData).forEach((shortCode) => {
+  let [ filenameData ] = shortCodesToEmojiData[shortCode];
+  filenameData.forEach(emojiMapData => processEmojiMapData(emojiMapData, shortCode));
+});
+emojisWithoutShortCodes.forEach(emojiMapData => processEmojiMapData(emojiMapData));
+
+module.exports = unicodeMapping;

app/javascript/flavours/glitch/features/emoji/emoji_utils.js

@@ -0,0 +1,258 @@
+// This code is largely borrowed from:
+// https://github.com/missive/emoji-mart/blob/5f2ffcc/src/utils/index.js
+
+import data from './emoji_mart_data_light';
+
+const buildSearch = (data) => {
+  const search = [];
+
+  let addToSearch = (strings, split) => {
+    if (!strings) {
+      return;
+    }
+
+    (Array.isArray(strings) ? strings : [strings]).forEach((string) => {
+      (split ? string.split(/[-|_|\s]+/) : [string]).forEach((s) => {
+        s = s.toLowerCase();
+
+        if (search.indexOf(s) === -1) {
+          search.push(s);
+        }
+      });
+    });
+  };
+
+  addToSearch(data.short_names, true);
+  addToSearch(data.name, true);
+  addToSearch(data.keywords, false);
+  addToSearch(data.emoticons, false);
+
+  return search.join(',');
+};
+
+const _String = String;
+
+const stringFromCodePoint = _String.fromCodePoint || function () {
+  let MAX_SIZE = 0x4000;
+  let codeUnits = [];
+  let highSurrogate;
+  let lowSurrogate;
+  let index = -1;
+  let length = arguments.length;
+  if (!length) {
+    return '';
+  }
+  let result = '';
+  while (++index < length) {
+    let codePoint = Number(arguments[index]);
+    if (
+      !isFinite(codePoint) ||       // `NaN`, `+Infinity`, or `-Infinity`
+      codePoint < 0 ||              // not a valid Unicode code point
+      codePoint > 0x10FFFF ||       // not a valid Unicode code point
+      Math.floor(codePoint) !== codePoint // not an integer
+    ) {
+      throw RangeError('Invalid code point: ' + codePoint);
+    }
+    if (codePoint <= 0xFFFF) { // BMP code point
+      codeUnits.push(codePoint);
+    } else { // Astral code point; split in surrogate halves
+      // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+      codePoint -= 0x10000;
+      highSurrogate = (codePoint >> 10) + 0xD800;
+      lowSurrogate = (codePoint % 0x400) + 0xDC00;
+      codeUnits.push(highSurrogate, lowSurrogate);
+    }
+    if (index + 1 === length || codeUnits.length > MAX_SIZE) {
+      result += String.fromCharCode.apply(null, codeUnits);
+      codeUnits.length = 0;
+    }
+  }
+  return result;
+};
+
+
+const _JSON = JSON;
+
+const COLONS_REGEX = /^(?:\:([^\:]+)\:)(?:\:skin-tone-(\d)\:)?$/;
+const SKINS = [
+  '1F3FA', '1F3FB', '1F3FC',
+  '1F3FD', '1F3FE', '1F3FF',
+];
+
+function unifiedToNative(unified) {
+  let unicodes = unified.split('-'),
+    codePoints = unicodes.map((u) => `0x${u}`);
+
+  return stringFromCodePoint.apply(null, codePoints);
+}
+
+function sanitize(emoji) {
+  let { name, short_names, skin_tone, skin_variations, emoticons, unified, custom, imageUrl } = emoji,
+    id = emoji.id || short_names[0],
+    colons = `:${id}:`;
+
+  if (custom) {
+    return {
+      id,
+      name,
+      colons,
+      emoticons,
+      custom,
+      imageUrl,
+    };
+  }
+
+  if (skin_tone) {
+    colons += `:skin-tone-${skin_tone}:`;
+  }
+
+  return {
+    id,
+    name,
+    colons,
+    emoticons,
+    unified: unified.toLowerCase(),
+    skin: skin_tone || (skin_variations ? 1 : null),
+    native: unifiedToNative(unified),
+  };
+}
+
+function getSanitizedData() {
+  return sanitize(getData(...arguments));
+}
+
+function getData(emoji, skin, set) {
+  let emojiData = {};
+
+  if (typeof emoji === 'string') {
+    let matches = emoji.match(COLONS_REGEX);
+
+    if (matches) {
+      emoji = matches[1];
+
+      if (matches[2]) {
+        skin = parseInt(matches[2]);
+      }
+    }
+
+    if (data.short_names.hasOwnProperty(emoji)) {
+      emoji = data.short_names[emoji];
+    }
+
+    if (data.emojis.hasOwnProperty(emoji)) {
+      emojiData = data.emojis[emoji];
+    }
+  } else if (emoji.id) {
+    if (data.short_names.hasOwnProperty(emoji.id)) {
+      emoji.id = data.short_names[emoji.id];
+    }
+
+    if (data.emojis.hasOwnProperty(emoji.id)) {
+      emojiData = data.emojis[emoji.id];
+      skin = skin || emoji.skin;
+    }
+  }
+
+  if (!Object.keys(emojiData).length) {
+    emojiData = emoji;
+    emojiData.custom = true;
+
+    if (!emojiData.search) {
+      emojiData.search = buildSearch(emoji);
+    }
+  }
+
+  emojiData.emoticons = emojiData.emoticons || [];
+  emojiData.variations = emojiData.variations || [];
+
+  if (emojiData.skin_variations && skin > 1 && set) {
+    emojiData = JSON.parse(_JSON.stringify(emojiData));
+
+    let skinKey = SKINS[skin - 1],
+      variationData = emojiData.skin_variations[skinKey];
+
+    if (!variationData.variations && emojiData.variations) {
+      delete emojiData.variations;
+    }
+
+    if (variationData[`has_img_${set}`]) {
+      emojiData.skin_tone = skin;
+
+      for (let k in variationData) {
+        let v = variationData[k];
+        emojiData[k] = v;
+      }
+    }
+  }
+
+  if (emojiData.variations && emojiData.variations.length) {
+    emojiData = JSON.parse(_JSON.stringify(emojiData));
+    emojiData.unified = emojiData.variations.shift();
+  }
+
+  return emojiData;
+}
+
+function uniq(arr) {
+  return arr.reduce((acc, item) => {
+    if (acc.indexOf(item) === -1) {
+      acc.push(item);
+    }
+    return acc;
+  }, []);
+}
+
+function intersect(a, b) {
+  const uniqA = uniq(a);
+  const uniqB = uniq(b);
+
+  return uniqA.filter(item => uniqB.indexOf(item) >= 0);
+}
+
+function deepMerge(a, b) {
+  let o = {};
+
+  for (let key in a) {
+    let originalValue = a[key],
+      value = originalValue;
+
+    if (b.hasOwnProperty(key)) {
+      value = b[key];
+    }
+
+    if (typeof value === 'object') {
+      value = deepMerge(originalValue, value);
+    }
+
+    o[key] = value;
+  }
+
+  return o;
+}
+
+// https://github.com/sonicdoe/measure-scrollbar
+function measureScrollbar() {
+  const div = document.createElement('div');
+
+  div.style.width = '100px';
+  div.style.height = '100px';
+  div.style.overflow = 'scroll';
+  div.style.position = 'absolute';
+  div.style.top = '-9999px';
+
+  document.body.appendChild(div);
+  const scrollbarWidth = div.offsetWidth - div.clientWidth;
+  document.body.removeChild(div);
+
+  return scrollbarWidth;
+}
+
+export {
+  getData,
+  getSanitizedData,
+  uniq,
+  intersect,
+  deepMerge,
+  unifiedToNative,
+  measureScrollbar,
+};

app/javascript/flavours/glitch/features/emoji/unicode_to_filename.js

@@ -0,0 +1,26 @@
+// taken from:
+// https://github.com/twitter/twemoji/blob/47732c7/twemoji-generator.js#L848-L866
+exports.unicodeToFilename = (str) => {
+  let result = '';
+  let charCode = 0;
+  let p = 0;
+  let i = 0;
+  while (i < str.length) {
+    charCode = str.charCodeAt(i++);
+    if (p) {
+      if (result.length > 0) {
+        result += '-';
+      }
+      result += (0x10000 + ((p - 0xD800) << 10) + (charCode - 0xDC00)).toString(16);
+      p = 0;
+    } else if (0xD800 <= charCode && charCode <= 0xDBFF) {
+      p = charCode;
+    } else {
+      if (result.length > 0) {
+        result += '-';
+      }
+      result += charCode.toString(16);
+    }
+  }
+  return result;
+};

app/javascript/flavours/glitch/features/emoji/unicode_to_unified_name.js

@@ -0,0 +1,21 @@
+function padLeft(str, num) {
+  while (str.length < num) {
+    str = '0' + str;
+  }
+
+  return str;
+}
+
+exports.unicodeToUnifiedName = (str) => {
+  let output = '';
+
+  for (let i = 0; i < str.length; i += 2) {
+    if (i > 0) {
+      output += '-';
+    }
+
+    output += padLeft(str.codePointAt(i).toString(16).toUpperCase(), 4);
+  }
+
+  return output;
+};

app/javascript/flavours/glitch/features/emoji_picker/index.js

@@ -11,7 +11,7 @@ import Overlay from 'react-overlays/lib/Overlay';
 import classNames from 'classnames';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import { supportsPassiveEvents } from 'detect-passive-events';
-import { buildCustomEmojis, categoriesFromEmojis } from 'flavours/glitch/utils/emoji';
+import { buildCustomEmojis, categoriesFromEmojis } from 'flavours/glitch/features/emoji/emoji';
 import { useSystemEmojiFont } from 'flavours/glitch/initial_state';
 import { assetHost } from 'flavours/glitch/utils/config';
 

app/javascript/flavours/glitch/features/getting_started/components/announcements.js

@@ -9,7 +9,7 @@ import { defineMessages, injectIntl, FormattedMessage, FormattedDate } from 'rea
 import { autoPlayGif, reduceMotion, disableSwiping } from 'flavours/glitch/initial_state';
 import elephantUIPlane from 'mastodon/../images/elephant_ui_plane.svg';
 import { mascot } from 'flavours/glitch/initial_state';
-import unicodeMapping from 'flavours/glitch/utils/emoji/emoji_unicode_mapping_light';
+import unicodeMapping from 'flavours/glitch/features/emoji/emoji_unicode_mapping_light';
 import classNames from 'classnames';
 import EmojiPickerDropdown from 'flavours/glitch/features/emoji_picker';
 import AnimatedNumber from 'flavours/glitch/components/animated_number';

app/javascript/flavours/glitch/features/ui/components/compare_history_modal.js

@@ -4,7 +4,7 @@ import ImmutablePropTypes from 'react-immutable-proptypes';
 import { connect } from 'react-redux';
 import { FormattedMessage } from 'react-intl';
 import { closeModal } from 'flavours/glitch/actions/modal';
-import emojify from 'flavours/glitch/utils/emoji';
+import emojify from 'flavours/glitch/features/emoji/emoji';
 import escapeTextContentForBrowser from 'escape-html';
 import InlineAccount from 'flavours/glitch/components/inline_account';
 import IconButton from 'flavours/glitch/components/icon_button';

app/javascript/flavours/glitch/features/ui/util/async-components.js

@@ -1,5 +1,5 @@
 export function EmojiPicker () {
-  return import(/* webpackChunkName: "flavours/glitch/async/emoji_picker" */'flavours/glitch/utils/emoji/emoji_picker');
+  return import(/* webpackChunkName: "flavours/glitch/async/emoji_picker" */'flavours/glitch/features/emoji/emoji_picker');
 }
 
 export function Compose () {