first commit

src/lib/format.ts

@@ -0,0 +1,3 @@
+export const currency = (v: number) => v.toLocaleString('pt-BR', { style: 'currency', currency: 'BRL' });
+
+

src/lib/storage.ts

@@ -0,0 +1,23 @@
+import AsyncStorage from '@react-native-async-storage/async-storage';
+
+export const storage = {
+  async get<T>(key: string, fallback: T): Promise<T> {
+    try {
+      const raw = await AsyncStorage.getItem(key);
+      if (!raw) return fallback;
+      return JSON.parse(raw) as T;
+    } catch (err) {
+      console.error('storage parse error', err);
+      return fallback;
+    }
+  },
+  async set<T>(key: string, value: T): Promise<void> {
+    try {
+      await AsyncStorage.setItem(key, JSON.stringify(value));
+    } catch (err) {
+      console.error('storage set error', err);
+    }
+  },
+};
+
+