Guide

Whether you are publishing your first npm package or maintaining a monorepo with dozens of libraries, these guides walk you through every step — from installation to production builds.

Recommended reading order

If you are new to Packem, start at the top and work your way down. Each guide builds on the previous one.

1. Introduction — What Packem is, how it works, and when to use it.
2. Getting Started — Install Packem and create your first bundle in under five minutes.
3. Configuration — Customize entry points, output formats, and build behavior.
4. Transformers — Pick the right compiler (esbuild, swc, OXC, sucrase, or TypeScript).
5. CSS Processing — Add support for CSS, Sass, Less, Stylus, PostCSS, and CSS Modules.
6. Debug and Profiling — Diagnose build issues and measure performance.

Already familiar with Packem?

Jump straight to the reference material:

• Configuration Options — Every option explained with examples.
• API Reference — Programmatic usage, hooks, and plugin development.
• Examples — Copy-and-paste starter projects for common setups.