title: Import and export reducer with React-Redux
body: <p>I'm studying React-Redux and I have an example like this</p>
  
  <pre><code>const todoApp = combineReducers({
    todos,
    visibilityFilter
  })
  
  export default todoApp /*from reducers*/
  </code></pre>
  
  <p>then I have</p>
  
  <pre><code>import reducer from './reducers'
  
  const store = createStore(reducer)
  
  render(
    &lt;Provider store={store}&gt;
      &lt;App /&gt;
    &lt;/Provider&gt;,
    document.getElementById('root')
  )
  </code></pre>
  
  <p>So, it didn't export anything as reducer in ./reducers, and the syntax import is not either <code>import * as reducer</code> in ES6. Why does it work ?</p>