Firebase Auth with React

auth.tsx

firebase.auth.onAuthStateChanged((user) => {
        if(user) {
          setSession({
            data: {
              user
            },
          });
        } else {
          setSession({
            data: null,
          });
        }
    }, (error: unknown) => {
      console.error(error)

      setSession({
        error: error,
        data: session.data
      })
    })