title: loDash -- Is there a way to simplify for readability
body: <p>I have the logic worked out but wanted to find a more readable (and maintainable) way to write this: </p>
  
  <pre><code>let labels = _.map(_.keys( _.groupBy(sd, 'month')), (i) =&gt; {
        return months[i].abr;
      });
  </code></pre>
  
  <p><a href="https://codepen.io/wynnewade/pen/NXdxmV?editors=0010" rel="nofollow noreferrer">Codepen</a></p>