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Handle errors in flatmap #64

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bakkot commented Nov 7, 2019

When one of the to-be-flattened iterators errors, the receiver iterator should still be closed gracefully.

In the second commit I also switched the first *false* to a *true* in If _innerComplete_ is *false*, set _innerAlive_ to *false*. in Iterator.prototype.flatMap, which makes it match AsyncIterator.prototype.flatMap. I am pretty sure that makes it match the intent, but haven't checked carefully. Presumably one of the two is wrong prior to this PR, though.

ljharb approved these changes Nov 7, 2019
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@bakkot bakkot force-pushed the bakkot:flatmap-errors branch from a9991c6 to 99425cf Nov 7, 2019
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