[Vuejs]-Firestore Not Writing User Data to Data Base

A big thank-you to @RenaudTarnec. The data was returning null and unfortunately the Auth provider doesn’t return any error when that happens.

By creating a log using the needed returned data before the fb.usersCollection.doc(account.userUid).set(account) helped in figuring it out.

Bellow is the final working example.

import firebase from 'firebase'
import firebaseui from 'firebaseui'

const fb = require('@/services/firebaseInit')

export var uiConfig = {
    signInSuccessUrl: '/dashboard',
    signInFlow: 'popup',

    callbacks: {
        signInSuccessWithAuthResult: function(authResult) {
            const newUser   = authResult.user
            const account = {
                avatar      : newUser.photoURL,
                eMail       : newUser.email,
                userName    : newUser.displayName,
                userUid     : newUser.uid,
                accountHolder: []
            }

            console.log(
                'New user: '+ account.userName  + '\n' +
                'with id: ' + account.userUid   + '\n' +
                'email: '   + account.eMail     + '\n' +
                'avatar: '  + account.avatar
            )

            fb.usersCollection.doc(account.userUid).set(account)
            .then(() => {
                console.log('New user account with ID:' + account.userUid + ' created');
            })
            .catch(err => {
                console.log(err)
                this.errorMsg = err.message
            })
            alert('Hello ' + account.userName + ', welcome to Firestore!');
            return false;
        }
    },

    signInOptions: [
        firebase.auth.GoogleAuthProvider.PROVIDER_ID,
        {
            provider: firebase.auth.EmailAuthProvider.PROVIDER_ID,
            requireDisplayName: true,
        },
        firebaseui.auth.AnonymousAuthProvider.PROVIDER_ID,
    ],

};