$ sudo npm install core-js
$ sudo npm install -g core-js

If want to update the core-js package execute the command as below,

$ sudo npm update core-js

Update package globally,

$ npm install -g core-js

Git clone:

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

$ sudo  npm install -g ./core-js

core-js@2.5.1 /usr/lib/node_modules/core-js

How to remove core-js package :

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

$ sudo npm uninstall core-js

Basic Information of core-js NPM Package: