content: import React from 'react'
  import ReactDOM from 'react-dom'
  import { createStore } from 'redux'
  import Counter from './components/Counter'
  import counter from './reducers'
  
  const store = createStore(counter)
  const rootEl = document.getElementById('root')
  
  function render() {
    ReactDOM.render(
      <Counter
        value={store.getState()}
        onIncrement={() => store.dispatch({ type: 'INCREMENT' })}
        onDecrement={() => store.dispatch({ type: 'DECREMENT' })}
      />,
      rootEl  
    )
  }
  
  render()
  store.subscribe(render)
  