title: How do I check if mentioned member is found?
body: <p>How do I check if a mention is a mention</p>
  <pre><code>if (msg.content.toLowerCase().startsWith('!find')) {
      target = msg.mentions.members.first()
      if (!target) return msg.channel.send(`Member not found!`)
      msg.channel.send('Found!')
  }
  </code></pre>
  <p>This was my code, I want to check if the mention is found cause the <code>if(!target)</code> only work with the null result.</p>