npm

A “store” of ready-made code pieces for JavaScript, used from the terminal. npx starts such a piece without installing it; pnpm is an alternative to npm.

You’ll also find it as: npx, pnpm

How it appears in the course

The npm option — only if you already have Node.js installed, version 18 or newer. If you don’t know what that is, skip it.
How to install it, step by step · Module 00, Installation and first steps · free
“Check with: npm test -- auth” — the command that runs the tests for the login part.
What does a good message look like? · Module 01, How to talk to Claude · free
To add a new rule, you tell Claude directly, for example: “add to CLAUDE.md the rule: always use pnpm, not npm” (two similar programs for installing packages). Claude writes it into the file.
How do you get started quickly? · Module 02, CLAUDE.md: your project’s memory

Where you learn it

In module 00 · Installation and first steps, in the Claude Code for Beginners course.

Related terms

Learn Claude Code from zero, in plain English

12 modules with 1–2 minute lessons, which you can also do on your phone. The first two modules are free.