Figuring out the behavior of WindowProxy in the face of non-configurable properties

[Boris Zbarsky]

On 1/14/15 8:56 PM, Bjoern Hoehrmann wrote:
> What are the odds that the behavior observable by web pages can actually
> be defined sanely such that ES invariants and compatibility requirements
> are satisfied?

My personal best estimate is about 30% chance for the one such 
definition we have so far being web compatible.  But this is mostly 
based on gut feeling.

> https://www.w3.org/Bugs/Public/show_bug.cgi?id=27128#c15
> indicates, as I understand it, the odds may be quite good. In that case,
> looking for a volunteer to come up with a proposal might be a good next
> step.

We have a proposal.  It's at https://github.com/domenic/window-proxy-spec

I have an implementation that I've been trying to land in Firefox for a 
few weeks.  I had to fix a bunch of our tests, then restrict the change 
to web pages because it breaks various extensions.  I'm pretty hopeful 
that I can at least get it to the point where I can try doing some web 
compat testing...

https://bugzilla.mozilla.org/show_bug.cgi?id=1107443 for those who want 
to follow along.

-Boris