title: How to convert typescript types of strings to array of strings?
body: <p>I've this type:</p>
  
  <pre><code>type myCustomType = "aaa" | "bbb" | "ccc";
  </code></pre>
  
  <p>I need to convert it to an array like this:</p>
  
  <pre><code>["aaa", "bbb", "ccc"]
  </code></pre>
  
  <p>How can I do this in typescript?</p>