title: How to expect a Date format by using toMatchObject() in jest
body: <p>I am trying to verify wether one of the entry in an object is in ISO timestamp.
  Using the <code>expect.any($type)</code></p>
  <p>I have tried using Date, ISO_8601, and timestamp. How can I find what is the correct way to define the type here ? Or what should I do to customize one ?</p>
  <p><a href="https://i.stack.imgur.com/cFqCF.png" rel="nofollow noreferrer">This is a what I am trying to achieve</a></p>