bun.sh/docs/guides/ecosystem/react.md

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Use React and JSX

Bun supports .jsx and .tsx files out of the box. React just works with Bun.

Create a new React app with bun init --react. This gives you a template with a simple React app and a simple API server together in one full-stack app.

# Create a new React app
$ bun init --react

# Run the app in development mode
$ bun dev

# Build as a static site for production
$ bun run build

# Run the server in production
$ bun start

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Hot Reloading

Run bun dev to start the app in development mode. This will start the API server and the React app with hot reloading.

Full-Stack App

Run bun start to start the API server and frontend together in one process.

Static Site

Run bun run build to build the app as a static site. This will create a dist directory with the built app and all the assets.

├── src/
│   ├── index.tsx       # Server entry point with API routes
│   ├── frontend.tsx    # React app entry point with HMR
│   ├── App.tsx         # Main React component
│   ├── APITester.tsx   # Component for testing API endpoints
│   ├── index.html      # HTML template
│   ├── index.css       # Styles
│   └── *.svg           # Static assets
├── package.json        # Dependencies and scripts
├── tsconfig.json       # TypeScript configuration
├── bunfig.toml         # Bun configuration
└── bun.lock            # Lock file