allow unauthenticated (logged-out) users to translate notes

packages/frontend/src/i.ts

@@ -3,9 +3,10 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { reactive } from 'vue';
+import { computed, reactive } from 'vue';
 import * as Misskey from 'misskey-js';
 import { miLocalStorage } from '@/local-storage.js';
+import { fetchInstance } from '@/instance';
 
 // TODO: 他のタブと永続化されたstateを同期
 
@@ -29,6 +30,10 @@ export function incNotesCount() {
 	notesCount++;
 }
 
+// instance export can be empty sometimes, which causes problems.
+const instance = await fetchInstance();
+export const policies = computed<Misskey.entities.RolePolicies>(() => $i?.policies ?? instance.policies);
+
 if (_DEV_) {
 	(window as any).$i = $i;
 }