title: Determining if a node stream is in objectMode
body: <p>Given a node js stream object how do I determine if it is an object stream in objectMode? </p>
  
  <p>Say I have a readable stream instance</p>
  
  <pre><code> const myReadableStream = new ReadableStreamImplementation({
    options: { objectMode : true }
  });
  </code></pre>
  
  <p>How can I determine that the myReadableStream is in objectMode. Is there a method or property that can be read? Could not find the answer from skimming through node streams documentation.</p>
  
  <p><strong>EDIT</strong> Is there a way to tell without tapping into the stream and given only the stream object itself?</p>