Source code
Revision control
Copy as Markdown
Other Tools
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
description: >
If "ownKeys" trap is null or undefined, [[OwnPropertyKeys]] call is
properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
[[OwnPropertyKeys]] ( )
[...]
4. Let target be O.[[ProxyTarget]].
5. Let trap be ? GetMethod(handler, "ownKeys").
6. If trap is undefined, then
a. Return ? target.[[OwnPropertyKeys]]().
[[OwnPropertyKeys]] ( )
[...]
7. Let trapResultArray be ? Call(trap, handler, « target »).
8. Let trapResult be ? CreateListFromArrayLike(trapResultArray, « String, Symbol »).
[...]
23. Return trapResult.
includes: [compareArray.js]
features: [Symbol, Proxy, Reflect]
---*/
var trapResult = [Symbol(), "length", "foo", "0"];
var target = new Proxy([], {
ownKeys: function(_target) {
return trapResult;
},
});
var proxy = new Proxy(target, {
ownKeys: undefined,
});
assert.compareArray(Reflect.ownKeys(proxy), trapResult);
reportCompare(0, 0);