text: 
  import React from 'react'
  import { render } from 'react-dom'
  import { Provider } from 'react-redux'
  import { createStore } from 'redux';
  import reducer from '../src/reducer/index'
  import App from '../src/App'
  import './index.css';
  
  const store = createStore(
     reducer,
     window.__REDUX_DEVTOOLS_EXTENSION__ && 
     window.__REDUX_DEVTOOLS_EXTENSION__()
  )
  render(
     <Provider store = {store}>
        <App />
     </Provider>, document.getElementById('root')
  )