1 files changed, 0 insertions, 120 deletions
diff --git a/app/assets/javascripts/behaviors/gl_emoji/is_emoji_unicode_supported.js b/app/assets/javascripts/behaviors/gl_emoji/is_emoji_unicode_supported.js
deleted file mode 100644
index 4f8884d05ac..00000000000
--- a/app/assets/javascripts/behaviors/gl_emoji/is_emoji_unicode_supported.js
+++ /dev/null
@@ -1,120 +0,0 @@
-// On Windows, flags render as two-letter country codes, see http://emojipedia.org/flags/
-const flagACodePoint = 127462; // parseInt('1F1E6', 16)
-const flagZCodePoint = 127487; // parseInt('1F1FF', 16)
-function isFlagEmoji(emojiUnicode) {
-  const cp = emojiUnicode.codePointAt(0);
-  // Length 4 because flags are made of 2 characters which are surrogate pairs
-  return emojiUnicode.length === 4 && cp >= flagACodePoint && cp <= flagZCodePoint;
-}
-
-// Chrome <57 renders keycaps oddly
-// See https://bugs.chromium.org/p/chromium/issues/detail?id=632294
-// Same issue on Windows also fixed in Chrome 57, http://i.imgur.com/rQF7woO.png
-function isKeycapEmoji(emojiUnicode) {
-  return emojiUnicode.length === 3 && emojiUnicode[2] === '\u20E3';
-}
-
-// Check for a skin tone variation emoji which aren't always supported
-const tone1 = 127995;// parseInt('1F3FB', 16)
-const tone5 = 127999;// parseInt('1F3FF', 16)
-function isSkinToneComboEmoji(emojiUnicode) {
-  return emojiUnicode.length > 2 && Array.from(emojiUnicode).some((char) => {
-    const cp = char.codePointAt(0);
-    return cp >= tone1 && cp <= tone5;
-  });
-}
-
-// macOS supports most skin tone emoji's but
-// doesn't support the skin tone versions of horse racing
-const horseRacingCodePoint = 127943;// parseInt('1F3C7', 16)
-function isHorceRacingSkinToneComboEmoji(emojiUnicode) {
-  const firstCharacter = Array.from(emojiUnicode)[0];
-  return firstCharacter && firstCharacter.codePointAt(0) === horseRacingCodePoint &&
-    isSkinToneComboEmoji(emojiUnicode);
-}
-
-// Check for `family_*`, `kiss_*`, `couple_*`
-// For ex. Windows 8.1 Firefox 51.0.1, doesn't support these
-const zwj = 8205; // parseInt('200D', 16)
-const personStartCodePoint = 128102; // parseInt('1F466', 16)
-const personEndCodePoint = 128105; // parseInt('1F469', 16)
-function isPersonZwjEmoji(emojiUnicode) {
-  let hasPersonEmoji = false;
-  let hasZwj = false;
-  Array.from(emojiUnicode).forEach((character) => {
-    const cp = character.codePointAt(0);
-    if (cp === zwj) {
-      hasZwj = true;
-    } else if (cp >= personStartCodePoint && cp <= personEndCodePoint) {
-      hasPersonEmoji = true;
-    }
-  });
-
-  return hasPersonEmoji && hasZwj;
-}
-
-// Helper so we don't have to run `isFlagEmoji` twice
-// in `isEmojiUnicodeSupported` logic
-function checkFlagEmojiSupport(unicodeSupportMap, emojiUnicode) {
-  const isFlagResult = isFlagEmoji(emojiUnicode);
-  return (
-    (unicodeSupportMap.flag && isFlagResult) ||
-    !isFlagResult
-  );
-}
-
-// Helper so we don't have to run `isSkinToneComboEmoji` twice
-// in `isEmojiUnicodeSupported` logic
-function checkSkinToneModifierSupport(unicodeSupportMap, emojiUnicode) {
-  const isSkinToneResult = isSkinToneComboEmoji(emojiUnicode);
-  return (
-    (unicodeSupportMap.skinToneModifier && isSkinToneResult) ||
-    !isSkinToneResult
-  );
-}
-
-// Helper func so we don't have to run `isHorceRacingSkinToneComboEmoji` twice
-// in `isEmojiUnicodeSupported` logic
-function checkHorseRacingSkinToneComboEmojiSupport(unicodeSupportMap, emojiUnicode) {
-  const isHorseRacingSkinToneResult = isHorceRacingSkinToneComboEmoji(emojiUnicode);
-  return (
-    (unicodeSupportMap.horseRacing && isHorseRacingSkinToneResult) ||
-    !isHorseRacingSkinToneResult
-  );
-}
-
-// Helper so we don't have to run `isPersonZwjEmoji` twice
-// in `isEmojiUnicodeSupported` logic
-function checkPersonEmojiSupport(unicodeSupportMap, emojiUnicode) {
-  const isPersonZwjResult = isPersonZwjEmoji(emojiUnicode);
-  return (
-    (unicodeSupportMap.personZwj && isPersonZwjResult) ||
-    !isPersonZwjResult
-  );
-}
-
-// Takes in a support map and determines whether
-// the given unicode emoji is supported on the platform.
-//
-// Combines all the edge case tests into a one-stop shop method
-function isEmojiUnicodeSupported(unicodeSupportMap = {}, emojiUnicode, unicodeVersion) {
-  const isOlderThanChrome57 = unicodeSupportMap.meta && unicodeSupportMap.meta.isChrome &&
-    unicodeSupportMap.meta.chromeVersion < 57;
-
-  // For comments about each scenario, see the comments above each individual respective function
-  return unicodeSupportMap[unicodeVersion] &&
-    !(isOlderThanChrome57 && isKeycapEmoji(emojiUnicode)) &&
-    checkFlagEmojiSupport(unicodeSupportMap, emojiUnicode) &&
-    checkSkinToneModifierSupport(unicodeSupportMap, emojiUnicode) &&
-    checkHorseRacingSkinToneComboEmojiSupport(unicodeSupportMap, emojiUnicode) &&
-    checkPersonEmojiSupport(unicodeSupportMap, emojiUnicode);
-}
-
-export {
-  isEmojiUnicodeSupported,
-  isFlagEmoji,
-  isKeycapEmoji,
-  isSkinToneComboEmoji,
-  isHorceRacingSkinToneComboEmoji,
-  isPersonZwjEmoji,
-};