react-hot-loader is Invalid with simple template

[Easy-Martin]

I made a small change

import { AppContainer } from 'react-hot-loader'

function renderApp() {
  ReactDOM.render(
    <AppContainer>
      <App />
    </AppContainer>,
    document.getElementById('root')
  )
}
renderApp()
if (module.hot) {
  module.hot.accept(() => {
    return renderApp()
  })
}