Thu, 22 Jan 2015 13:21:57 +0100
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
1 // Return undefined if the trap returns undefined
2 var target = {};
3 Object.defineProperty(target, 'foo', {
4 configurable: true
5 });
6 assertEq(Object.getOwnPropertyDescriptor(new Proxy(target, {
7 getOwnPropertyDescriptor: function (target, name) {
8 return undefined;
9 }
10 }), 'foo'), undefined);