sqlite database

mobile/services/mmkvPersister.ts

@@ -0,0 +1,20 @@
+import { createMMKV } from 'react-native-mmkv';
+import { PersistedClient, Persister } from '@tanstack/react-query-persist-client';
+
+const storage = createMMKV({ id: 'vaultdrop-query-cache' });
+
+export function createMMKVPersister(): Persister {
+  return {
+    persistClient: async (client: PersistedClient) => {
+      storage.set('query-cache', JSON.stringify(client));
+    },
+    restoreClient: async () => {
+      const raw = storage.getString('query-cache');
+      if (!raw) return undefined;
+      return JSON.parse(raw) as PersistedClient;
+    },
+    removeClient: async () => {
+      storage.remove('query-cache');
+    },
+  };
+}