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 load(libdir + "asserts.js");
3 /*
4 * Throw a TypeError if the current descriptor is non-configurable and the trap
5 * returns a configurable descriptor
6 */
7 var target = {};
8 Object.defineProperty(target, 'foo', {
9 configurable: false
10 });
11 assertThrowsInstanceOf(function () {
12 Object.getOwnPropertyDescriptor(Proxy(target, {
13 getOwnPropertyDescriptor: function (target, name) {
14 return {
15 configurable: true
16 };
17 }
18 }), 'foo');
19 }, TypeError);