expo

Web-only React libraries like charts, syntax highlighters, and rich text editors cannot run directly in React Native. This skill provides the Expo DOM component pattern to run web code in a webview on native devices while rendering as-is on web, enabling incremental migration from web to native.

Expo SDK upgrades involve complex dependency management and breaking changes. This skill provides step-by-step guidance for upgrading Expo projects including CLI commands, breaking changes checklists, and migration paths for React 19 and New Architecture.

Expo apps need reliable data fetching with proper caching, error handling, and offline support. This skill provides proven patterns for implementing network requests, authentication, and resilient data fetching in React Native.

Expo developers struggle to configure Tailwind CSS v4 for cross-platform styling. This skill provides complete setup instructions for react-native-css and NativeWind v5, enabling universal styling across iOS, Android, and web.

Expo Go does not support custom native code. This skill helps you build custom development clients for testing native modules, widgets, and app extensions on physical devices.

Deploying Expo apps to app stores requires understanding complex CLI commands, platform-specific configurations, and submission processes. This skill provides comprehensive guidance for deploying to iOS App Store, Android Play Store, TestFlight, and web using EAS CLI.

Expo developers struggle to write correct EAS workflow YAML files due to complex schema requirements. This skill fetches the official schema, provides syntax guidance, and validates workflow files against the latest specifications.

Building server-side endpoints in Expo apps requires understanding file-based routing, secure credential handling, and deployment to cloud infrastructure. This skill provides guidelines for creating, testing, and deploying API routes using Expo Router and EAS Hosting.

Building iOS apps requires understanding native components, platform conventions, and Expo Router patterns. This skill provides comprehensive guidelines for creating polished, Apple-compliant interfaces using modern Expo patterns.