$ sudo npm install uglifyjs-webpack-plugin
$ sudo npm install -g uglifyjs-webpack-plugin

If want to update the uglifyjs-webpack-plugin package execute the command as below,

$ sudo npm update uglifyjs-webpack-plugin

Update package globally,

$ npm install -g uglifyjs-webpack-plugin

Git clone:

$ sudo  git clone https://github.com/rektide/uglifyjs-webpack-plugin.git

$ sudo  npm install -g ./uglifyjs-webpack-plugin

uglifyjs-webpack-plugin@1.1.1 /usr/lib/node_modules/uglifyjs-webpack-plugin

How to remove uglifyjs-webpack-plugin package :

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

$ sudo npm uninstall uglifyjs-webpack-plugin

Basic Information of uglifyjs-webpack-plugin NPM Package: