A Node.js runtime environment running standard scripts in the browser. Covers built-in modules, CommonJS require, JSON file loading, and automatic ESM-to-CJS transformation.

How it works

• The os and path modules are available out of the box
• Standard require() and module.exports patterns work as expected
• require('./config.json') loads JSON files directly
• ESM and CJS are automatically transformed so both module styles work together

Try it yourself

1. Edit index.js and run it from the terminal
2. Create new modules and import them with require()
3. Try using Node.js built-in modules like os and path