Comment #3 on issue 712 by [email protected]: Object.defineProperty allows
overriding an accessor with an empty descriptor
http://code.google.com/p/v8/issues/detail?id=712
You are correct. I now see my previous comment 1 was confused. I was
reacting only to the lack of a thrown
error, which is indeed correct. The outcome we should expect for the
original is
42
42
The outcome we should expect for your comment 2 case is
> o.x
42
> 'x' in o
true
> Object.getOwnPropertyDescriptor(o, 'x')
configurable: false
enumerable: false
get: function() { return 42; }
set: undefined
so the actual behavior is indeed very wrong.
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