text: // Import stylesheets
  import './style.css';
  // Firebase App (the core Firebase SDK) is always required and must be listed first
  import * as firebase from "firebase/app";
  
  // Add the Firebase products that you want to use
  import "firebase/auth";
  import "firebase/firestore";
  
  import * as firebaseui from 'firebaseui';
  
  // Document elements
  const startRsvpButton = document.getElementById('startRsvp');
  const guestbookContainer = document.getElementById('guestbook-container');
  
  const form = document.getElementById('leave-message');
  const input = document.getElementById('message');
  const guestbook = document.getElementById('guestbook');
  const numberAttending = document.getElementById('number-attending');
  const rsvpYes = document.getElementById('rsvp-yes');
  const rsvpNo = document.getElementById('rsvp-no');
  
  var rsvpListener = null;
  var guestbookListener = null;
  
  // Add Firebase project configuration object here
  // var firebaseConfig = {};
    // web app's Firebase configuration
    var firebaseConfig = {
      apiKey: "AIzaSyCidWslseI7a9dCNFSShrVPZDLMm3xR_d8",
      authDomain: "fir-web-codelab-5e1dd.firebaseapp.com",
      databaseURL: "https://fir-web-codelab-5e1dd.firebaseio.com",
      projectId: "fir-web-codelab-5e1dd",
      storageBucket: "fir-web-codelab-5e1dd.appspot.com",
      messagingSenderId: "755886290702",
      appId: "1:755886290702:web:a7d6e7c6ddd86c1259095f"
    };
    
    // Initialize Firebase
    firebase.initializeApp(firebaseConfig);
  
  // firebase.initializeApp(firebaseConfig);
  
  // FirebaseUI config
  const uiConfig = {
    credentialHelper: firebaseui.auth.CredentialHelper.NONE,
    signInOptions: [
      // Email / Password Provider.
      firebase.auth.EmailAuthProvider.PROVIDER_ID
    ],
    callbacks: {
      signInSuccessWithAuthResult: function(authResult, redirectUrl){
        // Handle sign-in.
        // Return false to avoid redirect.
        return false;
      } 
    }
  };
  
  // const ui = new firebaseui.auth.AuthUI(firebase.auth());
  