Create constants.js

app/utils/constants.js

@@ -0,0 +1,31 @@
+export const API_URL = 'https://api.example.com';
+export const API_KEY = 'YOUR_API_KEY_HERE';
+export const API_SECRET = 'YOUR_API_SECRET_HERE';
+
+export const WALLET_TYPES = {
+  BTC: 'bitcoin',
+  ETH: 'ethereum',
+  LTC: 'litecoin',
+};
+
+export const TRANSACTION_STATUSES = {
+  PENDING: 'pending',
+  CONFIRMED: 'confirmed',
+  FAILED: 'failed',
+};
+
+export const CURRENCY_SYMBOLS = {
+  USD: '$',
+  EUR: '€',
+  GBP: '£',
+};
+
+export const DATE_FORMATS = {
+  SHORT_DATE: 'YYYY-MM-DD',
+  LONG_DATE: 'YYYY-MM-DD HH:mm:ss',
+};
+
+export const STORAGE_KEYS = {
+  WALLET_DATA: 'wallet_data',
+  TRANSACTION_HISTORY: 'transaction_history',
+};