Hi,
ES5 remains pretty vague as far as the global object is concerned [1].
Specifically, the [[Class]] is left to the implementation suggesting
that internal [[Get]], [[Set]], etc. are unbounded on what they can do.
For instance, when doing "this.Object", an implementation could do
anything and return anything and still be conformant which defeats the
intuition of the fact that "Object" is a property of the global object.
I believe it'd be a good thing to pin down what's allowed and what is
not for the global object. Specifically, a recent change in Firefox [2]
made a lot of tests playing with the global object fail. However, due to
lack of specification on the global object, these tests should currently
be considered invalid [3].
Should these tests be invalid or the definition of the global object be
made more accurate?
David
[1] http://www.ecma-international.org/ecma-262/5.1/#sec-15.1
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=828787
[3] https://bugs.ecmascript.org/show_bug.cgi?id=1453
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