Proxying built-ins (Was: [[Invoke]] and implicit method calls)

David Bruant bruant.d at
Thu Sep 26 07:45:50 PDT 2013

Le 26/09/2013 14:44, Anne van Kesteren a écrit :
> On Thu, Sep 26, 2013 at 12:22 AM, Brendan Eich <brendan at> wrote:
>> Boris Zbarsky wrote:
>>> The web _does_ in general rely on being able to apply methods from some
>>> built-in (including DOM) prototype in one realm to objects from another
>>> realm.
>> This goes back to the dawn of JS. You can set location on a reachable frame
>> or window, even if not same-origin.
> Probably does not matter much, but the cross-origin case might become
> proxy objects long term due to process isolation.
It seems like it matters a lot. If that's not already the case, would 
that break the web when that happens?
Formulated differently: does the web has requirements making such 
process isolation impossible? If no, can the specs and implementations 
can be changed now to make process isolation possible?


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