Re: [whatwg/streams] Make underlying sink writes abortable (#1015) from Mattias Buelens on 2019-09-13 (public-webapps-github@w3.org from September 2019)

From: Mattias Buelens <notifications@github.com>
Date: Fri, 13 Sep 2019 03:36:01 -0700
To: whatwg/streams <streams@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <whatwg/streams/issues/1015/531188273@github.com>

Yes, please! 😀

I've been trying to make a fully spec-compliant `TransformStream` polyfill that uses native `ReadableStream` and `WritableStream`, so only using their public API. However, I ran into problems with [TransformStreamDefaultSinkWriteAlgorithm](https://streams.spec.whatwg.org/#transform-stream-default-sink-write-algorithm), which needs to check whether the stream is `erroring` (i.e. `abort()` has been called) before it transforms the chunk. Currently, this is impossible to know using only the public API. Having an `AbortSignal` passed to each sink `write()` call would solve this.

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Received on Friday, 13 September 2019 10:36:23 UTC