Environment Variables in Expo (2026): .env, app.config.js, and EAS Secrets
Learn how environment variables work in Expo across .env files, app.config.js, and EAS Secrets, with a variant pattern and CI-safe defaults.
Cross-platform mobile developer who came to RN from web. Bridges the two worlds and explains the seams.
Learn how environment variables work in Expo across .env files, app.config.js, and EAS Secrets, with a variant pattern and CI-safe defaults.
Ship native Apple Maps and Google Maps in a React Native app with expo-maps: install the config plugin, render your first map, drop markers, handle camera events, and decide when to stay on react-native-maps.
Build server endpoints inside your Expo app with +api.ts handlers, then ship them on EAS Hosting. Covers server output, dynamic segments, auth, middleware, env vars, testing, and honest limits.
Fix React Native edge-to-edge on Android 15 with Expo. Learn SafeAreaProvider, useSafeAreaInsets, expo-status-bar, and expo-navigation-bar patterns.
Ship the same React Native codebase to iOS, Android, and the browser using Expo SDK 54 and Metro. A practical 2026 walkthrough covering setup, platform-specific code, styling, Expo Router on web, and EAS Hosting deployment.