Ignore return value of `Node.Stream.writeString`
Ignore return value of `Node.Stream.writeString`

From Node.Stream.writeString docs:

  "Returns false if the stream wishes for the calling code to wait for the 'drain' event to be emitted before continuing to write additional data; otherwise true."

So it seems that it is enough to just wait till writing has finished which is done by our Aff continuation.
I'm not sure but situation can be a bit more complicated if we take
Aff Fibers into account and consider other "concurrent" writes...

owickstrom/hyper,owickstrom/hyper