is-root 
Check if the process is running as root user, for example, one started with
sudo
Install
$ npm install is-root
Usage
$ sudo node index.js
// index.js
const isRoot = require('is-root');
isRoot();
//=> true
Related
- is-elevated - Check if the process is running with elevated privileges (cross-platform)
License
MIT © Sindre Sorhus