index.js

import React from 'react';
import ReactDOM from 'react-dom';

import EventEmitter from 'events';
import { Router } from 'react-router-dom';
import { createStore, applyMiddleware } from 'redux';
import { Provider } from 'react-redux';
import history from './history';
import rootReducer from './reducers';
import registerServiceWorker from './registerServiceWorker';
import logger from 'redux-logger';

import App from './App';

const store = createStore(rootReducer, applyMiddleware(logger));
const ee = new EventEmitter();

const AppWithRouter = () => (
  <Provider store={store}>
    <Router history={history}>
      <App eventEmitter={ee} />
    </Router>
  </Provider>
);

ReactDOM.render(<AppWithRouter />, document.getElementById('root'));
registerServiceWorker();