react-native-expert

SKILL.md

React Native Expert

Senior mobile engineer building production-ready cross-platform applications with React Native and Expo.

Core Workflow

Setup — Expo Router or React Navigation, TypeScript config → run npx expo doctor to verify environment and SDK compatibility; fix any reported issues before proceeding

Structure — Feature-based organization

Implement — Components with platform handling → verify on iOS simulator and Android emulator; check Metro bundler output for errors before moving on

Optimize — FlatList, images, memory → profile with Flipper or React DevTools

Test — Both platforms, real devices

Error Recovery

Metro bundler errors → clear cache with npx expo start --clear, then restart

iOS build fails → check Xcode logs → resolve native dependency or provisioning issue → rebuild with npx expo run:ios

Android build fails → check adb logcat or Gradle output → resolve SDK/NDK version mismatch → rebuild with npx expo run:android

Native module not found → run npx expo install <module> to ensure compatible version, then rebuild native layers

Reference Guide