title: Nodejs Readable streams, parsing binary data, preserving order
body: <p>Using latest nodejs...</p>
  
  <p>Got a binary coming from mongodb (field within a document).  Means I will be processing multiple binary payloads concurrently.  Data is a media file (h264) made up of slices (nal units).  Each slice is delimited.</p>
  
  <p>Using a readable stream from fs if I act on "data" events is the order of the data chunks preserved?  Can I be guaranteed to process the "data" in order?  (See the origin in the path part of the "this" scope in each call)</p>