content: import 'babel-polyfill';
  import React from 'react';
  import {render} from 'react-dom';
  
  import {CompareCalculator} from './ui/widgets/calculator-comparison.jsx';
  
  
  class App extends React.Component {
      render() {
          return (
              <div>
                  <CompareCalculator />
              </div>
          );
      }
  }
  
  let appContainer = document.querySelector('[data-region="app"]');
  
  if (!appContainer){
      let div = document.createElement('div');
      div.setAttribute('data-region', 'app');
      document.body.appendChild(div);
      appContainer = document.querySelector('[data-region="app"]');
  }
  
  render(<App/>, appContainer);