react-native-expo
The skill is based on Expo SDK (docs from expo/expo repo), generated at 2026-02-26.
Expo provides tooling and services for React Native: app config and Prebuild (Continuous Native Generation), Expo SDK packages, development builds, EAS Build (cloud builds and internal distribution), and EAS Update (over-the-air JS updates). Use development builds for production apps; Expo Go is a limited playground.
Core References
| Topic | Description | Reference |
|---|---|---|
| App config | app.json, app.config.js/ts, dynamic config, reading in app | core-config |
| Development workflow | Dev loop, development builds vs Expo Go, when to rebuild | core-development-workflow |
| Development and production modes | DEV, --no-dev --minify, when to use each | core-development-mode |
| Metro | metro.config.js, resolver, transformer, cache, env vars | core-metro |
| Logging | Console in terminal, native logs, log-android / log-ios | core-logging |
| CNG and Prebuild | npx expo prebuild, --clean, EAS Build and native dirs | core-continuous-native-generation |
Features
Expo SDK and native code
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