Node.js

Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine.

Installation

Using Homebrew

$ brew install node

Using Node Version Manager (nvm)

Download and install nvm by running:

$ curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.31.1/install.sh | bash

Then download Node and select your version by running:

$ source ~/.bashrc        # source your bashrc/zshrc to add nvm to PATH
$ command -v nvm          # check the nvm use message
$ nvm install node        # install most recent Node stable version
$ nvm ls                  # list installed Node version
$ nvm use node            # use stable as current version
$ nvm ls-remote           # list all the Node versions you can install
$ nvm alias default node  # set the installed stable version as the default Node

See the documentation for information.

npm usage

To install a package:

$ npm install <package> # Install locally
$ npm install -g <package> # Install globally

To install a package and save it in your project's package.json file:

$ npm install <package> --save

To see what's installed:

$ npm list [-g]

To find outdated packages:

$ npm outdated [-g]

To upgrade all or a particular package:

$ npm update [-g] [<package>]

To uninstall a package:

$ npm uninstall [-g] <package>