I have a react native project and am using firebase v9.

I am trying to add a user object to my user collection when a user is created via the sign up screen, but it is not adding in the database, and not throwing any errors either.

Here is my firebase.js

import firebase from 'firebase/compat/app';
import 'firebase/compat/auth';
import 'firebase/compat/firestore';

const firebaseConfig = {
  apiKey: '',
  authDomain: '',
  projectId: '',
  storageBucket: '',
  messagingSenderId: '',
  appId: '',
};

let app;

if (firebase.apps.length === 0) {
  app = firebase.initializeApp(firebaseConfig);
} else {
  app = firebase.app();
}

const db = app.firestore();
const auth = firebase.auth();

export {db, auth};

I know that these connection details are correct because my firebase authentication is working correctly.

Here is my sign in screen where I attempt to add to the database.

const SignUp = ({navigation}) => {
  const [fullName, setFullName] = useState('');
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');

  const createUser = async (email, password) => {
    try {
      auth
        .createUserWithEmailAndPassword(email, password)
        .then(function (user) {
          var user = auth.currentUser;
          logUser(user);
          navigation.navigate('Login');
        });
    } catch (error) {
      alert(error);
    }
  };

  async function logUser(user) {
    await addDoc(collection(db, 'users'), JSON.parse(JSON.stringify(user)));
  }

If I don't put JSON.parse/JSON.stringify, it is throwing an error saying firebase is called with invalid data, expected object, but it was a custom user object. So I know it is hitting that part of the codebase.

I have also went into my firestore 'rules' section on firebase console and changed it to requests go through for all:

      allow read, write: if true;

Thanks.