1 files changed, 6 insertions, 5 deletions
diff --git a/packages/frontend/src/config.ts b/packages/frontend/src/config.ts
index 073b21a0ae..24f60910d1 100644
--- a/packages/frontend/src/config.ts
+++ b/packages/frontend/src/config.ts
@@ -1,21 +1,22 @@
-import { miLocalStorage } from "./local-storage";
+import { miLocalStorage } from './local-storage';
 
 const address = new URL(location.href);
-const siteName = (document.querySelector('meta[property="og:site_name"]') as HTMLMetaElement)?.content;
+const siteName = document.querySelector<HTMLMetaElement>('meta[property="og:site_name"]')?.content;
 
 export const host = address.host;
 export const hostname = address.hostname;
 export const url = address.origin;
 export const apiUrl = url + '/api';
 export const wsUrl = url.replace('http://', 'ws://').replace('https://', 'wss://') + '/streaming';
-export const lang = miLocalStorage.getItem('lang');
+export const lang = miLocalStorage.getItem('lang') ?? 'en-US';
 export const langs = _LANGS_;
-export let locale = JSON.parse(miLocalStorage.getItem('locale'));
+const preParseLocale = miLocalStorage.getItem('locale');
+export let locale = preParseLocale ? JSON.parse(preParseLocale) : null;
 export const version = _VERSION_;
 export const instanceName = siteName === 'Misskey' ? host : siteName;
 export const ui = miLocalStorage.getItem('ui');
 export const debug = miLocalStorage.getItem('debug') === 'true';
 
-export function updateLocale(newLocale) {
+export function updateLocale(newLocale): void {
 	locale = newLocale;
 }