title: How to create a type alias in Flutter?
body: <p>I have seen some old questions/answers that said it's impossible to create a type alias on Flutter. I just want to make sure whether it's the case, as the language seems to have been updated numerous times since.</p>
  <p>My specific question is, how can I make a type alias like this:</p>
  <pre><code>typealias Json = Map&lt;String, dynamic&gt;;
  </code></pre>
  <p>?</p>
  <p>Or is there any workaround, because I've tried to use <a href="https://stackoverflow.com/a/53429538">empty mixin</a> to do this but it says that there are 18 missing method implementations.</p>