何らかの理由によりクライアントの絵文字キャッシュが削除された場合ただちに再取得するように修正

packages/frontend/src/custom-emojis.ts

@@ -7,7 +7,7 @@ import { shallowRef, computed, markRaw, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import { api, apiGet } from './os';
 import { useStream } from '@/stream';
-import { get, set } from '@/scripts/idb-proxy';
+import { get, set, exist } from '@/scripts/idb-proxy';
 
 const storageCache = await get('emojis');
 export const customEmojis = shallowRef<Misskey.entities.CustomEmoji[]>(Array.isArray(storageCache) ? storageCache : []);
@@ -50,12 +50,13 @@ stream.on('emojiDeleted', emojiData => {
 export async function fetchCustomEmojis(force = false) {
 	const now = Date.now();
 
+	const emojiCacheExist = await exist('emojis');
 	let res;
 	if (force) {
 		res = await api('emojis', {});
 	} else {
 		const lastFetchedAt = await get('lastEmojisFetchedAt');
-		if (lastFetchedAt && (now - lastFetchedAt) < 1000 * 60 * 60) return;
+		if (lastFetchedAt && (now - lastFetchedAt) < 1000 * 60 * 60 && emojiCacheExist) return;
 		res = await apiGet('emojis', {});
 	}
 

packages/frontend/src/scripts/idb-proxy.ts

@@ -9,6 +9,7 @@ import {
 	get as iget,
 	set as iset,
 	del as idel,
+	keys as ikeys,
 } from 'idb-keyval';
 
 const fallbackName = (key: string) => `idbfallback::${key}`;
@@ -40,3 +41,15 @@ export async function del(key: string) {
 	if (idbAvailable) return idel(key);
 	return window.localStorage.removeItem(fallbackName(key));
 }
+
+export async function exist(key: string) {
+	if (idbAvailable) {
+		const keys = await ikeys();
+		return (keys.indexOf(key) !== -1);
+	}
+	const targetKey = fallbackName(key);
+	for (let index = 0, len = window.localStorage.length; index < len; index++) {
+		if (window.localStorage.key(index) === targetKey) return true; 
+	}
+	return false;
+}