Final iterator spec

[Allen Wirfs-Brock]

Yes

Peter van der Zee <ecma at qfox.nl> wrote:

>On Sun, Mar 2, 2014 at 4:18 AM, Domenic Denicola
><domenic at domenicdenicola.com> wrote:
>> You can just do `if (Symbol.iterator in potentialIterable)`.
>
>Does that work cross-frame?
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