title: How do I convert an id to a username? discord.js v12
body: <p>I need the convert a players id stored in a database and convert it to their username to be displayed on a leaderboard. How would I go about doing this? I'm on discord.js v12.</p>
  <p>I've tried this:</p>
  <pre><code>fetchuser = message.guild.members.fetch(userid)
  fetchuser = fetchuser.username
  </code></pre>