$ sudo npm install firebase
$ sudo npm install -g firebase

If want to update the firebase package execute the command as below,

$ sudo npm update firebase

Update package globally,

$ npm install -g firebase

Git clone:

$ sudo  git clone https://github.com/rektide/firebase.git

$ sudo  npm install -g ./firebase

firebase@4.6.2 /usr/lib/node_modules/firebase

How to remove firebase package :

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

$ sudo npm uninstall firebase

Basic Information of firebase NPM Package: