src/app/js/index.js
import { Provider } from 'react-redux'
import { createStore } from 'redux'
import React from 'react'
import { render } from 'react-dom'
import reducer from './reducers/reducer'
import App from './components/App'
const store = createStore(reducer,
window.devToolsExtension ? window.devToolsExtension() : undefined
);
export { store }
render(
<Provider store={store}>
<App/>
</Provider>,
document.getElementById('app')
)