Fri, 16 Jan 2015 04:50:19 +0100
Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32
1 load(libdir + "asserts.js");
3 /*
4 * Throw a TypeError if the trap reports an existing own property as
5 * non-existent on a non-extensible object
6 */
7 var target = {};
8 Object.defineProperty(target, 'foo', {
9 configurable: true
10 });
11 Object.preventExtensions(target);
12 assertThrowsInstanceOf(function () {
13 Object.getOwnPropertyDescriptor(new Proxy(target, {
14 getOwnPropertyDescriptor: function (target, name) {
15 return undefined;
16 }
17 }), 'foo');
18 }, TypeError);