npm commands

npm.md

npm

Help

• List of commands npm or npm help
• Display full usage info of all commands npm -l
• Display usage info of specific command $ npm <command> -h

Scripts

• Write scripts to run in package.json file

 "scripts": {
   "lint": "./node_modules/.bin/eslint"
 }

List packages

• npm list -g
• npm ls -g --depth=0

Remove the unwanted dependencies by calling

• When you run prune, the npm CLI will run through your package.json and compare it to your project’s /node_modules directory. It will print a list of modules that aren’t in your package.json.
• npm prune

Begin a project

• Initializes project as a node project
• Will ask you a bunch of questions, and then write a package.json for you.
• npm init

Installing packages

• npm install <package name>
• npm i <package name>
• npm init --yes will install defaults

Installing as a dependency

• The --save option instructs NPM to include the package inside of the dependencies section of your package.json
• npm install --save
• npm install -S
• npm i -S

Installing as a Dev Dependency (devDependencies)

• npm install --save-dev
• npm install -D
• npm i -D

Installing a specific package version

• npm install <package name@<version number>
• Example: npm install underscore@1.8.2

Update local packages

• npm update
• npm update <package name>

Check for outdated packages

• npm outdated
• npm outdated -g

Uninstall packages (r shortcut)

• npm uninstall <package name>
• npm r <package name> --save
• npm r <package name> --save-dev

Uninstall local dependency & remove from package.json

• npm uninstall <package name> --save-dev

Uninstall global package

• npm uninstall <package name> -g

Provides info regarding local install

• npm config list

Find the path to npm's directory

• npm config get prefix

Cache

• When npm installs a package it keeps a copy, so the next time you want to install that package, it doesn’t need to hit the network. The copies are cached in the .npm directory in your home path.
• This directory will get cluttered with old packages over time, so it’s useful to clean it up occasionally.
• npm cache clean

Run Tests

• npm test
• npm t