On 11/25/14, 2:48 PM, Allen Wirfs-Brock wrote:
It would be trivial to change the ES spec. to allow for the script this binding
and global object to be set to independent value when a Realm is created.
I think we do want this, but that's not enough, unfortunately. Consider
this script, executed at toplevel:
Object.defineProperty(Object.prototype, "foo", { get: function() {
return this; } });
var z = foo;
Is z a Window or a WindowProxy? In browsers, as far as I can tell, it's
interoperably a WindowProxy. I put a testcase at
http://web.mit.edu/bzbarsky/www/testcases/windowproxy/getter-on-proto-chain-root.html
if people want to take a look. This wouldn't be covered by the "script
this binding" bit, though, or would it?
-Boris
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