Timothy Flynn 04b4307b3d LibJS: Convert get_iterator_values helper to ThrowCompletionOr ...

This one is a bit unusual, so to clarify:

Previously, callers of get_iterator_values() would supply a callback
that would return an IterationDecision, and an enum to indicate whether
iterator_close() should be invoked upon IterationDecision::Break.

Now, use of both those enums is removed, and callers must return an
Optional<Completion>. If a Completion is provided, the iterator will be
closed, and that completion will be returned from get_iterator_values.
Otherwise, once the iterator is exhausted, a default-initialized
Completion will be returned.

2021-10-21 00:26:45 +01:00

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