Get rid of stripped-emoji.json in favour of an in-memory single truth source

src/emoji.js

@@ -0,0 +1,82 @@
+/*
+Copyright 2019 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import EMOJIBASE from 'emojibase-data/en/compact.json';
+
+export const VARIATION_SELECTOR = String.fromCharCode(0xFE0F);
+
+// The unicode is stored without the variant selector
+const UNICODE_TO_EMOJI = new Map(); // not exported as gets for it are handled by getEmojiFromUnicode
+export const EMOTICON_TO_EMOJI = new Map();
+export const SHORTCODE_TO_EMOJI = new Map();
+
+export const getEmojiFromUnicode = unicode => UNICODE_TO_EMOJI.get(unicode.replace(VARIATION_SELECTOR, ""));
+
+const EMOJIBASE_GROUP_ID_TO_CATEGORY = [
+    "people", // smileys
+    "people", // actually people
+    "control", // modifiers and such, not displayed in picker
+    "nature",
+    "foods",
+    "places",
+    "activity",
+    "objects",
+    "symbols",
+    "flags",
+];
+
+export const DATA_BY_CATEGORY = {
+    "people": [],
+    "nature": [],
+    "foods": [],
+    "places": [],
+    "activity": [],
+    "objects": [],
+    "symbols": [],
+    "flags": [],
+};
+
+// Store various mappings from unicode/emoticon/shortcode to the Emoji objects
+EMOJIBASE.forEach(emoji => {
+    if (emoji.unicode.includes(VARIATION_SELECTOR)) {
+        // Clone data into variation-less version
+        emoji = Object.assign({}, emoji, {
+            unicode: emoji.unicode.replace(VARIATION_SELECTOR, ""),
+        });
+    }
+
+    const categoryId = EMOJIBASE_GROUP_ID_TO_CATEGORY[emoji.group];
+    if (DATA_BY_CATEGORY.hasOwnProperty(categoryId)) {
+        DATA_BY_CATEGORY[categoryId].push(emoji);
+    }
+    // This is used as the string to match the query against when filtering emojis
+    emoji.filterString = `${emoji.annotation}\n${emoji.shortcodes.join('\n')}}\n${emoji.emoticon || ''}`.toLowerCase();
+
+    // Add mapping from unicode to Emoji object
+    UNICODE_TO_EMOJI.set(emoji.unicode, emoji);
+
+    if (emoji.emoticon) {
+        // Add mapping from emoticon to Emoji object
+        EMOTICON_TO_EMOJI.set(emoji.emoticon, emoji);
+    }
+
+    if (emoji.shortcodes) {
+        // Add mapping from each shortcode to Emoji object
+        emoji.shortcodes.forEach(shortcode => {
+            SHORTCODE_TO_EMOJI.set(shortcode, emoji);
+        });
+    }
+});