title: Discord bot still answering multiple times on one event
body: <p>Already found <a href="https://stackoverflow.com/questions/43772293/discord-bot-responds-multiple-times-for-one-event">same issue</a>, but there are no answer there :C</p>
  
  <p>So my problem is same, using Discord.js lib, and this is my code:</p>
  
  <pre><code> client.on('message', msg =&gt; {
       var splittedMessage = msg.content.split("#");
       if (msg.channel.type == "dm") {
           if (msg.content === "booya") {
               msg.channel.send('Hello there, ' + msg.author.username)
                   .then(msg =&gt; console.log('Sent #' + msg.id + ': ' + msg.content))
                   .catch(console.error);
               return
           } else {
               msg.channel.send('No query found')
                   .then(msg =&gt; console.log('Sent #' + msg.id + ': ' + msg.content))
                   .catch(console.error);
               return
           }
       }
   });
  </code></pre>
  
  <p>And here is result: <a href="https://i.stack.imgur.com/c8XKS.jpg" rel="nofollow noreferrer">Screenshot</a></p>