$ sudo npm install btoa
$ sudo npm install -g btoa

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

$ sudo npm update btoa

Update package globally,

$ npm install -g btoa

Git clone:

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

$ sudo  npm install -g ./btoa

btoa@1.1.2 /usr/lib/node_modules/btoa

How to remove btoa package :

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

$ sudo npm uninstall btoa

Basic Information of btoa NPM Package: