expo
React Native development platform and build toolchain
TLDR
Create new project
SYNOPSIS
expo command [options]
DESCRIPTION
Expo is a platform for building React Native applications. The CLI provides tools for development, building, and deployment of cross-platform mobile apps.
Expo simplifies React Native development with managed workflow, pre-configured native modules, and OTA (over-the-air) updates. The Expo Go app enables testing without native builds.
The platform handles iOS and Android builds in the cloud without local toolchains.
PARAMETERS
COMMAND
Expo CLI command.init NAME
Create new project.start
Start development server.build:android/build:ios
Build for platform.publish
Publish to Expo.install PACKAGE
Install compatible package.login
Authenticate with Expo.--help
Display help information.
CONFIGURATION
app.json
Expo project configuration including app name, version, SDK version, and platform-specific settings.eas.json
EAS Build and Submit configuration for managed builds and deployments.
CAVEATS
Some native modules unavailable in managed workflow. Build service may have queues. Ejecting loses some Expo features. App size includes Expo runtime.
HISTORY
Expo was created to simplify React Native development, providing a managed workflow and build service. It's maintained by Expo (formerly Exponent) and widely used for React Native projects.
SEE ALSO
react-native(1), npm(1), eas(1)