firebase-js-initialization.js

import firebase from 'firebase'; // Your web app's Firebase configuration
var firebaseConfig = {
  apiKey: "**************",
  authDomain: "**************",
  databaseURL: "**************",
  projectId: "**************",
  storageBucket: "",
  messagingSenderId: "**************",
  appId: "**************",
  measurementId: "**************"
};
// Initialize Firebase
firebase.initializeApp(firebaseConfig);