**Packages**
* `"react": "^16.13.1"`
* `"eslint-plugin-react-hooks": "^4.0.8"`

The issue #18819 still happens with `eslint-plugin-react-hooks@4.0.8`.

Using the example code from the other issue gives the following errors:

![image](https://user-images.githubusercontent.com/37122343/90794940-59d9a980-e305-11ea-9ec0-98f69b41c280.png)

![image](https://user-images.githubusercontent.com/37122343/90795019-770e7800-e305-11ea-92b8-b64407b0b22c.png)


return <button {...props} ref={ref} />
        });
      `,
      errors: [genericError('useHookInsideCallback')],
    },
    {
      code: `
        // Invalid because it's a common misunderstanding.
        // We *could* make it valid but the runtime error could be confusing.
        const ComponentWithHookInsideCallback = React.memo(props => {
          useEffect(() => {
            useHookInsideCallback();
          });
          return <button {...props} />
        });
      `,
      errors: [genericError('useHookInsideCallback')],
    },
    {
      code: `
        // Invalid because it's a common misunderstanding.
        // We *could* make it valid but the runtime error could be confusing.
        function ComponentWithHookInsideCallback() {
          function handleClick() {
            useState();
          }
        }
      `,
      errors: [functionError('useState', 'handleClick')],
    },