FWIW I volleyed for _flush() to be part of the Writable API directly,
rather than Transform, before streams2 were solidified. I had the use-case
at the time and apparently Liam does as well. C'est la vie.


On Mon, Apr 15, 2013 at 2:10 PM, Isaac Schlueter <[email protected]> wrote:

> Usually "clean up" means "close" rather than "finish".  The "finish"
> event simply means that all the data has been written, not necessarily
> that any underlying resources have been cleaned up.
>
> You could listen on "finish" and do it then.
>
> If it's a Transform stream, and you need to make sure that you flush
> something to the output after the last chunk is processed, you can
> implement a `_flush(callback)` method.
>
>
> On Mon, Apr 15, 2013 at 2:28 PM, Liam <[email protected]> wrote:
> > We need to make an async call to clean up our writable stream
> > implementation, before emitting finish.
> >
> >
> > On Monday, April 15, 2013 11:50:05 AM UTC-7, Isaac Schlueter wrote:
> >>
> >> You do not need to implement end(), no.  In fact, you probably
> shouldn't.
> >>
> >> What are you trying to do?
> >>
> >> Note that Writables don't get an 'end' event, but rather a 'finish'
> event.
> >>
> >> On Mon, Apr 15, 2013 at 9:55 AM, Liam <[email protected]> wrote:
> >> > I had the impression that _write() was the only method required in a
> >> > stream.Writable subclass; is an end() implementation required to
> detect
> >> > calls to end()?
> >> >
> >> > This code shows that implementing _write() in a stream.Writable
> >> > implementation won't detect a call to end()
> >> >
> >> > https://gist.github.com/mtibeica/5389437
> >> >
>
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