$ sudo npm install webcomponents.js
$ sudo npm install -g webcomponents.js

If want to update the webcomponents.js package execute the command as below,

$ sudo npm update webcomponents.js

Update package globally,

$ npm install -g webcomponents.js

Git clone:

$ sudo  git clone https://github.com/rektide/webcomponents.js.git

$ sudo  npm install -g ./webcomponents.js

webcomponents.js@0.7.24 /usr/lib/node_modules/webcomponents.js

How to remove webcomponents.js package :

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

$ sudo npm uninstall webcomponents.js

Basic Information of webcomponents.js NPM Package: