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 https://github.com/Moddable-OpenSource/moddable/issues/1223 (unless the coverage is present and I've just missed it).
bakkot
commented
11 months ago
Statements like
const [] = iterableandconst [x, y] = iterableshould get an iterator fromiterableand cache itsnextmethod, resulting in exactly one observable read thereof. But we may be missing coverage for this, as evidenced by https://github.com/Moddable-OpenSource/moddable/issues/1223 (unless the coverage is present and I've just missed it).Related: https://github.com/tc39/ecma262/pull/1021