title: Combine nested arrays into one?
body: <p>Let's say I have an array of objects that look similar to this:</p>
  
  <pre><code>[
     {
       id: ...,
       name: "...",
       users: [1, 2, 3]
      },
      ...
  ]
  </code></pre>
  
  <p>Is there a way that I can easily merge the .users array of each object into one array?</p>