Eu tenho este componente:

import React, { useState, useEffect } from "react";
import ReactDOM from "react-dom";

function App() {
  const [count, setCount] = useState(0);
  useEffect(() => {
    document.title = `You clicked ${count} times`;
  });

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>Click me</button>
    </div>
  );
}

export default App;

como eu quero experimentar o novoReact hooks proposta instalando[email protected] no meupackage.json, mas estou recebendo um erro:

TypeError: dispatcher.useState is not a function

  2 | import ReactDOM from "react-dom";
  3 | 
  4 | function App() {
> 5 |   const [count, setCount] = useState(0);
    |                                     ^
  6 |   useEffect(() => {
  7 |     document.title = `You clicked ${count} times`;
  8 |   });

O que eu fiz errado