Cannot read property ‘getState’ of undefined

main.js

import React from 'react'
import { render } from 'react-dom'
import { Provider } from 'react-redux'
import App from './components/App'

render(
	<Provider>
		<App />
	</Provider>,
	document.getElementById('app')
)

components/App.js

import React from 'react'

const App = () => (
	<div>
		Hello Redux!
	</div>
)

export default App

console.log
Provider.js:26 Uncaught TypeError: Cannot read property ‘getState’ of undefined

store定義していないから？？