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I'm running the latest version of React and I'm getting this error I have a simple Component using React Hooks as you can see here :

import React, { useState } from "react";
const AppFunction = () => {
  const [count, setCount] = useState(0);
  const incrementCount = () => {
    setCount(count + 1);
  return (
      <h1>Count:{count} </h1>
      <button onClick={incrementCount}>Click Me</button>
export default AppFunction;
Everything i've found about it on stack overflow says to upgrade the libraries but I have the latest version (16.7.0) and have tried the alpha version with no luck , what am i doing wrong?
package.json
"dependencies": {
    "react": "^16.7.0",
    "react-dom": "^16.7.0",
    "react-scripts": "2.1.1"
                I console.log useState and it comes out undefined, so its not getting imported right or something
– Dmitriy
                Dec 20, 2018 at 2:31
UPDATE
Hooks are now release as part of React v16.8.0. You can use hooks by upgrading your react version
See the docs for more details on the APIs
React 16.7.0 Doesn't contain hooks. 
As per the React blog
  
Our latest release includes an important performance bugfix for
  React.lazy. Although there are no API changes, we’re releasing it as a
  minor instead of a patch.
In order to run hooks in your code, refer How to use new Feature Hooks in React?
"react": "16.7.0-alpha.2",
"react-dom": "16.7.0-alpha.2",
"react-router-dom": "4.4.0-beta.6",
and run yarn
The react released 16.7.0, but there are no react hooks. If you use '^react@16.7.0-alpha.2', remove yarn.lock, it will install react@16.7.0. So you must delete '^' and use 'react@16.7.0-alpha.2'.
        
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