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 // Throw a TypeError if the trap sets a non-writable, non-configurable property
4 var target = {};
5 Object.defineProperty(target, 'foo', {
6 value: 'bar',
7 writable: false,
8 configurable: false
9 });
10 assertThrowsInstanceOf(function () {
11 new Proxy(target, {
12 set: function (target, name, val, receiver) {
13 return true;
14 }
15 })['foo'] = 'baz';
16 }, TypeError);