react-native

Create new project

$ npx react-native init [ProjectName]

$ npx react-native start

$ npx react-native run-android

$ npx react-native run-ios

$ npx react-native run-ios --device "[iPhone 15]"

$ npx react-native start --reset-cache

$ npx react-native link

$ npx react-native doctor

npx react-native command [options]

react-native is the command-line interface for React Native, a framework that enables building native iOS and Android mobile applications using JavaScript and React. It manages the full development lifecycle from project creation through building, running, and debugging apps on simulators, emulators, and physical devices.
The CLI starts the Metro bundler, which serves JavaScript bundles to running apps and enables hot reloading for rapid development iteration. Platform-specific commands (run-android, run-ios) compile native code and deploy to target devices. The doctor command verifies that the development environment is correctly configured, checking for Xcode, Android SDK, Node.js, and required dependencies.

init NAME

Create new project.

Start Metro bundler.

Build and run on Android.

Build and run on iOS.

Check development environment.

Link native dependencies.

Upgrade React Native.

Target device.

Clear bundler cache.

iOS development requires macOS. Android needs SDK and emulator. Native builds can be slow.

React Native was created by Facebook and released in 2015. It enables building mobile apps using React and JavaScript, compiling to native code.

expo(1), npm(1), metro(1)