Tiny Package Manager: Learns how npm or Yarn works

Explore a simple package manager demo and understand the core functionality of NPM or Yarn v1, including package downloads, dependency resolution, and more.

Introduction

Learn how npm or Yarn v1 works through a simple package manager demo.

Highlights

• Download packages to node_modules directory
• Simple CLI
• Resolve dependency conflicts
• Flatten dependencies tree
• Support lock file (like yarn.lock or package-lock.json)
• Add a new package through CLI (like yarn add or npm i <package> command)
• Run lifecycle scripts (preinstall and postinstall)
• Symlink the bin files

Recommendation

This course is suitable for JavaScript developers who want to understand how a package manager like npm or Yarn works under the hood. It provides a simple and straightforward demo to explain the core functionality of a package manager.