[whatwg/webidl] Why did we rename `async_iterable` to `async_sequence`? (Issue #1611)

lucacasonato created an issue (whatwg/webidl#1611)

When I introduced this type, I intentionally called it `async_iterable` instead of `async_sequence`. A sequence has a fixed length and is collected at once during parameter conversion. An async iterable does not have a fixed length, and is iterated and validated as needed (on pull) rather than collected into a fixed sequence. Hence, this type should be called async iterable rather than async sequence.

cc @tabatkins @annevk

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Received on Friday, 19 June 2026 18:40:42 UTC