base.js

// I'll explain what Rebase is for later
import Rebase from 're-base';

// Note we import from 'firebase/app' not just 'firebase'. This avoids a nagging console
// warning ("It looks like you're using the development build of the Firebase JS SDK.")
import firebase from 'firebase/app';

// Similarly, on line 15 we need the database module, so that's exactly what we specify here.
require('firebase/database');

const firebaseApp = firebase.initializeApp({
  apiKey: 'your-api-key-here',
  authDomain: 'your-domain.firebaseapp.com',
  databaseURL: 'https://your-domain.firebaseio.com',
});

const base = Rebase.createClass(firebaseApp.database());

export { firebaseApp };
export default base;