$ sudo npm install phosphor-widget
$ sudo npm install -g phosphor-widget

If want to update the phosphor-widget package execute the command as below,

$ sudo npm update phosphor-widget

Update package globally,

$ npm install -g phosphor-widget

Git clone:

$ sudo  git clone https://github.com/rektide/phosphor-widget.git

$ sudo  npm install -g ./phosphor-widget

phosphor-widget@1.0.0-rc.1 /usr/lib/node_modules/phosphor-widget

How to remove phosphor-widget package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall phosphor-widget

Basic Information of phosphor-widget NPM Package: