$ sudo npm install uglify-js2
$ sudo npm install -g uglify-js2

If want to update the uglify-js2 package execute the command as below,

$ sudo npm update uglify-js2

Update package globally,

$ npm install -g uglify-js2

Git clone:

$ sudo  git clone https://github.com/rektide/uglify-js2.git

$ sudo  npm install -g ./uglify-js2

uglify-js2@2.1.11 /usr/lib/node_modules/uglify-js2

How to remove uglify-js2 package :

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

$ sudo npm uninstall uglify-js2

Basic Information of uglify-js2 NPM Package: