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Missing tests for next caching in array-destructuring? #3937

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gibson042 opened this issue Oct 3, 2023 · 1 comment
Open

Missing tests for next caching in array-destructuring? #3937

gibson042 opened this issue Oct 3, 2023 · 1 comment

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@gibson042
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gibson042 commented Oct 3, 2023 •
edited

Statements like const [] = iterable and const [x, y] = iterable should get an iterator from iterable and cache its next method, resulting in exactly one observable read thereof. But we may be missing coverage for this, as evidenced by Moddable-OpenSource/moddable#1223 (unless the coverage is present and I've just missed it).

Related: tc39/ecma262#1021
@gibson042 gibson042 mentioned this issue Oct 3, 2023
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@bakkot
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bakkot commented Oct 18, 2023

See also #1362

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