Expo is a production-ready framework for building native iOS and Android apps with React Native. It provides a complete development workflow from prototyping to deployment.

Why use Expo?

• Developer Experience: Hot reload, TypeScript support, and over-the-air updates
• Native APIs: Access to 50+ native modules (camera, location, notifications, etc.)
• Cross-Platform: Write once, run on iOS, Android, and web
• EAS (Expo Application Services): Cloud build, submit, and update services
• File-Based Routing: Expo Router for type-safe navigation
• No Native Code Required: Build production apps without touching Swift/Kotlin

Modules

UI & Styling

NativeWind

Link to NativeWind

Tailwind CSS for React Native. Write utility-first styling with the same Tailwind classes you use on the web.

Technical changes:

• Adds nativewind dependency to package.json
• Adds tailwindcss v3.3.2 as dev dependency
• Creates tailwind.config.js - Tailwind configuration:
  • Content paths: ./src/**/*.{js,jsx,ts,tsx}
  • Preset: require('nativewind/preset')
• Creates metro.config.js - Metro bundler config with NativeWind transformer
• Creates nativewind-env.d.ts - TypeScript declaration file for NativeWind types
• Creates styles/globals.css - Global CSS entry point for Tailwind directives