npm-cli

the package manager for JavaScript

The semver parser for node (the one npm uses)

tar for node

An ini parser/serializer in JavaScript

Public change requests/proposals & ideation

Node/npm Option Parsing

The logger that npm uses

npm's tree doctor

A terminal based horizontal guage aka, a progress bar

Like which(1) unix command. Find the first instance of an executable in the PATH.

npm fetcher

A node module to get your node module started

Is the given string an acceptable npm package name?

npm's content-addressable cache

Write files in an atomic fashion w/configurable ownership

The thing npm uses to read package.json files with semantics and defaults and validation and stuff

Provides metadata and conversions from repository urls for Github, Bitbucket and Gitlab

read(1) for node.

normalizes package metadata, typically found in package.json file.

Documentation for the npm registry, website, and command-line interface.