Fix emoji

src/emoji/index.ts

@@ -0,0 +1,36 @@
+// https://github.com/twitter/twemoji-parser/blob/master/src/lib/regex.js
+
+export function encodeEmoji(emojiText: string) {
+  const codepoints = toCodePoints(removeVS16s(emojiText)).join('-');
+  return codepoints;
+}
+
+const vs16RegExp = /\uFE0F/g;
+// avoid using a string literal like '\u200D' here because minifiers expand it inline
+const zeroWidthJoiner = String.fromCharCode(0x200d);
+
+const removeVS16s = (rawEmoji: string) => (rawEmoji.indexOf(zeroWidthJoiner) < 0 ? rawEmoji.replace(vs16RegExp, '') : rawEmoji);
+
+export function toCodePoints(unicodeSurrogates: string): Array<string> {
+  const points = [];
+  let char = 0;
+  let previous = 0;
+  let i = 0;
+  while(i < unicodeSurrogates.length) {
+    char = unicodeSurrogates.charCodeAt(i++);
+    if(previous) {
+      points.push((0x10000 + ((previous - 0xd800) << 10) + (char - 0xdc00)).toString(16));
+      previous = 0;
+    } else if (char > 0xd800 && char <= 0xdbff) {
+      previous = char;
+    } else {
+      points.push(char.toString(16));
+    }
+  }
+
+  if(points.length && points[0].length == 2) {
+    points[0] = '00' + points[0];
+  }
+
+  return points;
+}

src/lib/utils.ts

@@ -482,57 +482,6 @@ export function calcImageInBox (imageW: number, imageH: number, boxW: number, bo
   return {w: boxedImageW, h: boxedImageH};
 }
 
-/**
- * emojiUnicode
- * Get the unicode code of an emoji in base 16.
- *
- * @name emojiUnicode
- * @function
- * @param {String} input The emoji character.
- * @returns {String} The base 16 unicode code.
- */
-export function emojiUnicode(input: string) {
-  let pairs = emojiUnicode.raw(input).split(' ').map(val => parseInt(val).toString(16))/* .filter(p => p != 'fe0f') */;
-  if(pairs.length && pairs[0].length == 2) pairs[0] = '00' + pairs[0];
-  return pairs.join('-');
-}
-
-/**
-* emojiunicode.raw
-* Get the unicode code points of an emoji in base 16.
-*
-* @name emojiunicode.raw
-* @function
-* @param {String} input The emoji character.
-* @returns {String} The unicode code points.
-*/
-emojiUnicode.raw = function(input: string) {
-  if(input.length === 1) {
-    return input.charCodeAt(0).toString();
-  } else if(input.length > 1) {
-    const pairs = [];
-    for(var i = 0; i < input.length; i++) {
-      // high surrogate
-      if(input.charCodeAt(i) >= 0xd800 && input.charCodeAt(i) <= 0xdbff) {
-        if(input.charCodeAt(i + 1) >= 0xdc00 && input.charCodeAt(i + 1) <= 0xdfff) {
-          // low surrogate
-          pairs.push(
-            (input.charCodeAt(i) - 0xd800) * 0x400
-            + (input.charCodeAt(i + 1) - 0xdc00) + 0x10000
-          );
-        }
-      } else if(input.charCodeAt(i) < 0xd800 || input.charCodeAt(i) > 0xdfff) {
-        // modifiers and joiners
-        pairs.push(input.charCodeAt(i))
-      }
-    }
-
-    return pairs.join(' ');
-  }
-
-  return '';
-};
-
 export function getEmojiToneIndex(input: string) {
   let match = input.match(/[\uDFFB-\uDFFF]/);
   return match ? 5 - (57343 - match[0].charCodeAt(0)) : 0;

src/scripts/format_jsons.js

@@ -93,6 +93,8 @@ if(false) {
     let emoji = unified/* .replace(/-FE0F/gi, '') */.split('-')
     .reduce((prev, curr) => prev + String.fromCodePoint(parseInt(curr, 16)), '');
 
+    //emoji = emoji.replace(/\ufe0f/g, '');
+    
     let c = categories[category] === undefined ? 9 : categories[category];
     //obj[emoji] = '' + c + sort_order;
     //obj[emoji] = +('' + (c * 1000 + sort_order)).replace(/0+/g, '0').replace(/^(\d)0(\d)/g, '$1$2');