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