A lightweight in‑browser playground to explore and run npm packages instantly, and view the package’s README side‑by‑side.
A spiritual successor to RunKit, built with modern web technologies and totally running in browser. Long live the web!
Checkout: https://npmjs.dev/
This project is an independent experiment and not affiliated with npm, Inc.
- Two execution engines:
- Browser Sandbox (DOM APIs + import maps via esm.sh)
- Worker Sandbox (Node-compatible shims via unenv)
- Automatic sample code based on URL package
- Live console capture (log / info / warn / error)
- README auto-fetch from unpkg (fallback name variants)
For local development:
npm run devMIT