fetch token and refresh token

const [auth, setAuth] = useState<string | null>('');

const refresh = useRefreshToken();

  const {isLoading: isSending, mutate: loginEmail} = useMutation(
    async () => {
      return await loginWithEmail(email, password).then((res) =>
        fetchAccessToken(res.token),
      );
    },
    {
      onSuccess: (res) => {
        setAuth(res)
        navigate('/home');
console.log('res', res);
console.log('auth', auth);
// we get the res value here, but auth is never set
      },
      onError: (err: errTypes | any) => {
      ..... Error handling code
        }
      },
    },
  );