stream: error state timing #30851
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Clean up end simplify errored state. - errorEmitted should be set in the same tick as 'error' is emitted. - errored should be set as soon as an error occurs. - errored should exist on Readable as well. - refactor destroy logic and make it easier to follow.
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since this slightly changes timing it should probably be semver-major, even if it only applies to "internal" state. |
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mcollina
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I don't think so. Did you have anything specific in mind? This mostly affects internal details and is how I think it is expected to work. |
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No, not really. |
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This need another TSC approval. Maybe @addaleax? |
addaleax
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Clean up end simplify errored state. - errorEmitted should be set in the same tick as 'error' is emitted. - errored should be set as soon as an error occurs. - errored should exist on Readable as well. - refactor destroy logic and make it easier to follow. PR-URL: #30851 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Landed in 67ed526 🎉 |
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Fix, clean up and simplify errored state.
errorEmittedshould be set in the same tick as'error'is emitted.erroredwas not set (if receiving error through_destroy)erroredshould exist onReadableas well.errorEmittedis currently set in a tick before'error'is actually emitted which is a bit confusing (and inconsistent with other event has been emitted state, e.g.endEmitted). If we need to know the synchronous error state we should useerrored.There was a potential race in
console(at least in theory). We want to swallow an error if it's about to be emitted. However, sinceerrorEmittedwas set totruein the tick before the error is actually emitted, the "swallow error" logic might not be applied if the timing is unfortunate.Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes