Discussion on: Firebase Google Sign in with React

[Mary Gathoni]

You're welcome 😊

[imabigfan]

Hi Mary,
I am trying to use your code for a few days. Keep getting the following message:
Unhandled Rejection (TypeError): Cannot destructure property 'displayName' of 'user' as it is null.
Getting pretty frustrated trying to solve it.

Can you please... help me?

[Jocimar Lopes]

You can use a condition to check IF user is there. Something like this:

useEffect(() => {
    auth.onAuthStateChanged(async (user) => {
        if(user){
            const { displayName, email } = user;
            setUser({
                displayName,
                email,
            });
        }
    });
}, []);