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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 9.5.6
description: >
Throw a TypeError exception if Desc is not configurable and target property
descriptor is undefined, and trap result is true.
info: |
[[DefineOwnProperty]] (P, Desc)
...
19. If targetDesc is undefined, then
...
b. If settingConfigFalse is true, throw a TypeError exception.
...
---*/
var target = {};
var p = new Proxy(target, {
defineProperty: function(t, prop, desc) {
return true;
}
});
assert.throws(TypeError, function() {
Object.defineProperty(p, "foo", {
configurable: false
});
});
|
