絵文字をtwemojiに変更

クライアントデフォルトにあわせるため

packages/frontend-shared/js/emoji-base.ts

@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+const twemojiSvgBase = '/twemoji';
+const fluentEmojiPngBase = '/fluent-emoji';
+
+export function char2twemojiFilePath(char: string): string {
+	let codes = Array.from(char, x => x.codePointAt(0)?.toString(16));
+	if (!codes.includes('200d')) codes = codes.filter(x => x !== 'fe0f');
+	codes = codes.filter(x => x && x.length);
+	const fileName = codes.join('-');
+	return `${twemojiSvgBase}/${fileName}.svg`;
+}
+
+export function char2fluentEmojiFilePath(char: string): string {
+	let codes = Array.from(char, x => x.codePointAt(0)?.toString(16));
+	// Fluent Emojiは国旗非対応 https://github.com/microsoft/fluentui-emoji/issues/25
+	if (codes[0]?.startsWith('1f1')) return char2twemojiFilePath(char);
+	if (!codes.includes('200d')) codes = codes.filter(x => x !== 'fe0f');
+	codes = codes.filter(x => x && x.length);
+	const fileName = codes.map(x => x!.padStart(4, '0')).join('-');
+	return `${fluentEmojiPngBase}/${fileName}.png`;
+}