RunTS is a powerful, browser-based TypeScript and Node.js playground powered by WebContainers. It allows you to run secure, ephemeral Node.js environments directly in your browser without any server-side execution.

It serves as a lightweight, instant alternative to local setups for testing snippets, prototyping ideas, or exploring NPM packages.

• In-Browser Node.js: Powered by WebContainers for secure, local execution.
• TypeScript Support: First-class TypeScript support with IntelliSense and ATA (Automatic Type Acquisition).
• NPM Package Manager: Install and use any package from the NPM registry instantly.
• Multi-File Support: Work with multiple files using a tabbed interface.
• Themes: Beautiful built-in themes including Dracula, Monokai, and the default "RunTS Dark" (featuring TypeScript Blue).
• Snippets: Save and manage your favorite code snippets for quick access.
• Environment Variables: Securely manage env vars for your experiments.
• PWA Ready: Installable as a native-like app on your device.
• Shareable: Share your code snippets via URL.
• Offline Support: Works offline thanks to PWA capabilities (booting requires initial connection).

• Node.js (Latest LTS recommended)
• A modern browser that supports WebContainers (Chrome-based browsers are currently best supported).

• Core: React 19, Vite, TypeScript
• Runtime: WebContainers API
• Editor: Monaco Editor
• Styling: Tailwind CSS 4
• State: Zustand
• Icons: Lucide React
• Testing: Vitest, Playwright

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the project
2. Create your feature branch (git checkout -b feature/AmazingFeature)
3. Commit your changes (git commit -m 'Add some AmazingFeature')
4. Push to the branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

This project is licensed under the MIT License.