// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 9.5.5 description: > Throws a TypeError exception if trap result is undefined and target is not extensible info: | [[GetOwnProperty]] (P) ... 14. If trapResultObj is undefined, then ... e. If ToBoolean(extensibleTarget) is false, throw a TypeError exception. ... features: [Proxy] ---*/ var target = { foo: 1 }; var p = new Proxy(target, { getOwnPropertyDescriptor: function(t, prop) { return; } }); Object.preventExtensions(target); assert.throws(TypeError, function() { Object.getOwnPropertyDescriptor(p, "foo"); }); reportCompare(0, 0);