content: import React from 'react';
  import { createStore } from 'redux';
  import { Provider } from 'react-redux';
  import { render } from 'react-dom';
  import { buildDucksReducer } from 'redux-ducks';
  
  import counterReducer from './counter';
  import Counter from './counterView';
  
  const unitReducer = appState => appState;
  const rootReducer = buildDucksReducer(unitReducer)(counterReducer);
  const store = createStore(rootReducer);
  
  const Root = () => (
    <Provider store={store}>
      <div>
        <Counter />
        <Counter />
      </div>
    </Provider>
  );
  
  render(<Root />, document.getElementById('app-root'));
  