Docker CLI with build and run command, in ~100 lines of code

App with a small JS code generation compiler.

A slimmed down version of the test runner Mocha

Our own version of Webpack in <200 lines

Basic JavaScript type checker, in 100 lines.

100 line version of graphql-js.

Git in ~100 lines of code

NPM package manager in ~100 lines of code

Our own version of Prettier in <20 lines

My resume site

An advanced static type checker

Advancing Node.js as a framework for writing great tools

Working examples of common configurations using mocha ☕️

✅ The Node.js best practices list (July 2026)

📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2025)

OpenJS Foundation Cross Project Council

📓The Road to learn React: Your journey to master plain yet pragmatic React.js