title: Warning : Assign object to a variable before exporting as module default
body: <p>I'm using react-redux, and this is my root Reducer:</p>
  <pre><code>import Customers from &quot;./customers/reducer&quot;;
  
  export default {
    Customers
  };
  </code></pre>
  <p>but I got this warning: Assign object to a variable before exporting as module default. How do I deal with it?</p>