Web Streams: reject pending reads when releasing reader

[MattiasBuelens]

Previously, calling ReadableStreamDefaultReader.releaseLock() or ReadableStreamBYOBReader.releaseLock() while there are pending read() requests would throw a TypeError.

The specification has been changed to allow this case, and to reject such pending read() requests instead.

Standard change: https://github.com/whatwg/streams/pull/1168 Tests: https://github.com/web-platform-tests/wpt/pull/32072

[ronag]

@jasnell

[essential-existence]

Hello. Every time I run reader.releaseLock(), an error is generated at any time, even on a newly created stream TypeError [ERR_INVALID_STATE]: Invalid state: Reader released

[MattiasBuelens]

@essential-existence I suggest you open a separate issue for that. This issue is about implementing a change to releaseLock().

That said, I am a bit curious. That error appears as the rejection reason for reader.closed, but that promise is always marked as handled so it shouldn't cause an unhandled rejection. Unless your code is doing something else with reader.closed, perhaps? I recommend you add some example code when opening a new issue. 😉

[jasnell]

Great to see this change landed in the spec! Definitely will be nice to get this behavior implemented.

[essential-existence]

@essential-existence I suggest you open a separate issue for that. This issue is about implementing a change to releaseLock().

That said, I am a bit curious. That error appears as the rejection reason for reader.closed, but that promise is always marked as handled so it shouldn't cause an unhandled rejection. Unless your code is doing something else with reader.closed, perhaps? I recommend you add some example code when opening a new issue. 😉

Yes, indeed, without affecting closed no error is generated. I opened an issue.

[github-actions[bot]]

There has been no activity on this feature request for 5 months and it is unlikely to be implemented. It will be closed 6 months after the last non-automated comment.

For more information on how the project manages feature requests, please consult the feature request management document.

[jasnell]

Thank you auto-close bot bit I think this one needs to stay open for a bit still (unless it has already been resolved?)

[github-actions[bot]]

There has been no activity on this feature request for 5 months and it is unlikely to be implemented. It will be closed 6 months after the last non-automated comment.

For more information on how the project manages feature requests, please consult the feature request management document.

[MattiasBuelens]

@jasnell Looks like this was already fixed in #44292. 🙂