title: check if a returned document of the mongoDB has a specific property
body: <p>With Mongoose I have the user account using his/her phone like this:</p>
  <pre><code>const account = await db.Account.findOne({ phone: req.body.phone }) :
  </code></pre>
  <p>Then I want to check if there is a property named <code>verified</code> in the <code>account</code> so I used these two and both return errors:</p>
  <p><code>account.verified</code> and <code>account.hasOwnProperty('verified')</code></p>
  <p>Note that there is <strong>no</strong> property as <code>verified</code> in the <code>account</code> and I expect to get <code>undefined</code> or something like <code>null</code> that can be used to check for existence of the verified property!</p>
  <p>How can I check if there is such a property?</p>