react-native-expo

Original：🇺🇸 English

Translated

Build and maintain React Native apps with Expo SDK, EAS Build, EAS Update, and Continuous Native Generation. Use when configuring Expo projects, adding native modules, building binaries, or shipping over-the-air updates.

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Sourcehairyf/skills

Added on2026-02-26

NPX Install

npx skill4agent add hairyf/skills react-native-expo

SKILL.md Content

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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

Topic	Description	Reference
Expo SDK and third-party libs	Install with npx expo install, compatibility, config plugins	features-expo-modules
expo-constants	App manifest, build info, system constants, extra/env at runtime	features-sdk-constants
expo-image	Performant image component, caching, BlurHash/ThumbHash, contentFit	features-sdk-image
expo-file-system	File and directory API, Paths.cache/document, read/write, download	features-sdk-filesystem
expo-secure-store	Encrypted key-value store, optional biometric auth	features-sdk-secure-store
Config plugins	Use and write plugins to modify AndroidManifest, Info.plist during prebuild	features-config-plugins
Native modules	Expo Modules API, local module, config plugin for native config, lifecycle	features-native-modules

EAS Build and Submit

Topic	Description	Reference
EAS Build	Cloud builds, eas.json profiles, development/preview/production	features-eas
EAS Submit	Submit to Google Play and App Store (TestFlight), eas.json, CI	features-eas-submit

Development experience

Topic	Description	Reference
iOS Simulator and Android emulator	Setup, npx expo start + i/a, limitations, troubleshooting	features-simulators-emulators

Updates and versioning

Topic	Description	Reference
expo-updates and EAS Update	OTA updates, runtime version, channels	features-updates
Upgrading Expo SDK	Incremental upgrade, npx expo install --fix, expo-doctor	features-versioning

Best practices

Topic	Description	Reference
Debugging	Dev vs production errors, native logs, reproducing crashes	best-practices-debugging
Common development errors	Metro, AppRegistry, SDK version, version mismatch, caches	best-practices-common-errors