Remove twemoji dependency.

Support re-connecting after going / starting offline.

src/components/common/Emoji.tsx

@@ -1,22 +1,43 @@
-import twemoji from 'twemoji';
+import { EmojiPacks } from '../../redux/reducers/settings';
 
 var EMOJI_PACK = 'mutant';
 const REVISION = 3;
 
-/*export function setEmojiPack(pack: EmojiPacks) {
+export function setEmojiPack(pack: EmojiPacks) {
     EMOJI_PACK = pack;
-}*/
+}
+
+// Originally taken from Twemoji source code,
+// re-written by bree to be more readable.
+function codePoints(rune: string) {
+    const pairs = [];
+    let low = 0;
+    let i = 0;
+    
+    while (i < rune.length) {
+        const charCode = rune.charCodeAt(i++);
+        if (low) {
+            pairs.push(0x10000 + ((low - 0xd800) << 10) + (charCode - 0xdc00));
+            low = 0;
+        } else if (0xd800 <= charCode && charCode <= 0xdbff) {
+            low = charCode;
+        } else {
+            pairs.push(charCode);
+        }
+    }
+    
+    return pairs;
+}
 
 // Taken from Twemoji source code.
 // scripts/build.js#344
 // grabTheRightIcon(rawText);
 const UFE0Fg = /\uFE0F/g;
 const U200D = String.fromCharCode(0x200D);
-function toCodePoint(emoji: string) {
-    return twemoji.convert.toCodePoint(emoji.indexOf(U200D) < 0 ?
-        emoji.replace(UFE0Fg, '') :
-        emoji
-    );
+function toCodePoint(rune: string) {
+    return codePoints(rune.indexOf(U200D) < 0 ? rune.replace(UFE0Fg, '') : rune)
+        .map((val) => val.toString(16))
+        .join("-")
 }
 
 function parseEmoji(emoji: string) {

src/components/common/messaging/embed/Embed.tsx

@@ -52,23 +52,6 @@ export default function Embed({ embed }: Props) {
 
     switch (embed.type) {
         case 'Website': {
-            // ! FIXME: move this to january
-            /*if (embed.url && YOUTUBE_RE.test(embed.url)) {
-                embed.color = '#FF424F';
-            }
-
-            if (embed.url && TWITCH_RE.test(embed.url)) {
-                embed.color = '#7B68EE';
-            }
-
-            if (embed.url && SPOTIFY_RE.test(embed.url)) {
-                embed.color = '#1ABC9C';
-            }
-
-            if (embed.url && SOUNDCLOUD_RE.test(embed.url)) {
-                embed.color = '#FF7F50';
-            }*/
-
             // Determine special embed size.
             let mw, mh;
             let largeMedia = (embed.special && embed.special.type !== 'None') || embed.image?.size === 'Large';