title: Using express how to send blob object as response
body: <p>Im using express and truevault to store images in my server. From the truevault api I get a blob object that looks like this</p>
  
  <pre><code>{ blob:
     Blob {
       [Symbol(type)]: 'image/png',
       [Symbol(buffer)]: &lt;Buffer 89  ... &gt; },
    contentType: 'image/png',
    fileName: 'image.png' }
  }
  </code></pre>
  
  <p>How do I send this blob in the response object?</p>