text: import React from 'react';
  import ReactDOM from 'react-dom';
  import './index.css';
  import App from './App';
  import * as serviceWorker from './serviceWorker';
  import 'core-js/fn/number/is-nan'; 
  import 'core-js/es7/'; 
  import 'core-js/es6/'; 
  import 'raf/polyfill';
  import {createStore, applyMiddleware} from 'redux';
  import rootReducer from './reducers/root_reducer';
  import {Provider} from 'react-redux';
  import thunk from 'redux-thunk'
  const store = createStore(rootReducer, applyMiddleware(thunk));
  
  ReactDOM.render(<Provider store={store}><App /></Provider>, document.getElementById('root'));
  
  // If you want your app to work offline and load faster, you can change
  // unregister() to register() below. Note this comes with some pitfalls.
  // Learn more about service workers: https://bit.ly/CRA-PWA
  serviceWorker.unregister();
  