title: Node.js streams - property '_eventsCount' has already been set
body: <p>I am trying to reuse same writable stream to manually pipe to /dev/null</p>
  
  <p>I have this:</p>
  
  <pre><code>const writable = fs.createWriteStream('/dev/null');
  
  k1.stdout.pipe(writable);
  k1.stderr.pipe(writable);
  
  setTimeout(function(){
     k2.stdout.pipe(writable);
     k2.stderr.pipe(writable);
  },100);
  </code></pre>
  
  <p>and I am getting this error:</p>
  
  <pre><code> property '_eventsCount' has already been set
  </code></pre>
  
  <p>I tried this too:</p>
  
  <pre><code>const writable = fs.createWriteStream('/dev/null', {end: false});
  </code></pre>
  
  <p>and that didn't change the error.</p>
  
  <p>any ideas?</p>