index.js

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

import 'leaflet/dist/leaflet.css';
import L from 'leaflet';

import './index.css';
import App from './App';
import * as serviceWorker from './serviceWorker';

// make the default marker work with react (dunno if this is a weird hack)
delete L.Icon.Default.prototype._getIconUrl;
L.Icon.Default.mergeOptions({
  iconRetinaUrl: require('leaflet/dist/images/marker-icon-2x.png'),
  iconUrl: require('leaflet/dist/images/marker-icon.png'),
  shadowUrl: require('leaflet/dist/images/marker-shadow.png')
});

ReactDOM.render(<App />, 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();