Summary
- Network requests, API calls, and data fetching for Expo apps with caching, error handling, and offline support.
- Covers fetch API, React Query, error handling patterns, token management with expo-secure-store, and retry logic with exponential backoff Includes offline-first strategies using NetInfo and React Query persistence, plus environment variable configuration with EXPO_PUBLIC_ prefix for client-side URLs Supports Expo Router data loaders ( useLoaderData ) for route-level data loading on web (SDK 55+) Provides authentication workflows including token storage, refresh token flows, and secure header injection