title: How can I use multiple arrayBuffers in a blob?
body: <p>I've been looking all over and haven't found an answer that works. I have multiple arrayBuffers that I would like to combine into one blob. Do I need to combine the arrayBuffers somehow? Or should I create multiple blobs and combine those? Below is an example of what I'm trying to do, but failing</p>
  
  <pre><code>const buffers = []
  
  for(var i in files){
      ...code to retrieve arrayBuffer
      buffers.push(arrayBuffer)
  }
  
  const blob = new Blob([buffers], {type:'application/pdf'})
  const url = window.URL.createObjectURL(blob)
  window.open(url)
  </code></pre>
  
  <p>The above code doesn't work because new Blob expects an arrayBuffer and not an array of them. Is there something that would make this work?</p>