FirebaseAuth initialization example on npm

[ionuttamas]

The initialization on npm should be with lowercase:
var firebase = new FirebaseAuth(process.env.FIREBASE_API_KEY);
should be:
var firebase = new firebaseAuth(process.env.FIREBASE_API_KEY);

[itswisdomagain]

That depends on how you import (ES 6) or require (ES 5) the library. See below...

const FirebaseAuth = require('firebaseauth');
var firebase = new FirebaseAuth(process.env.FIREBASE_API_KEY);

or

import firebaseAuth from 'firebaseauth';
let firebase = new firebaseAuth(process.env.FIREBASE_API_KEY);