1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
// Copyright (C) 2019 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-object.getownpropertysymbols
description: >
Proxy [[OwnPropertyKeys]] trap does not skip string keys when validating invariant:
* The result List must contain the keys of all non-configurable own properties of
the target object.
info: |
Object.getOwnPropertySymbols ( O )
1. Return ? GetOwnPropertyKeys(O, Symbol).
GetOwnPropertyKeys ( O, type )
...
2. Let keys be ? obj.[[OwnPropertyKeys]]().
[[OwnPropertyKeys]] ( )
...
11. Let targetKeys be ? target.[[OwnPropertyKeys]]().
...
15. Let targetNonconfigurableKeys be a new empty List.
16. For each element key of targetKeys, do
a. Let desc be ? target.[[GetOwnProperty]](key).
b. If desc is not undefined and desc.[[Configurable]] is false, then
i. Append key as an element of targetNonconfigurableKeys.
...
18. Let uncheckedResultKeys be a new List which is a copy of trapResult.
19. For each key that is an element of targetNonconfigurableKeys, do
a. If key is not an element of uncheckedResultKeys, throw a TypeError exception.
features: [Proxy]
---*/
var target = {};
Object.defineProperty(target, 'prop', {
value: 1,
writable: true,
enumerable: true,
configurable: false,
});
var proxy = new Proxy(target, {
ownKeys: function() {
return [];
},
});
assert.throws(TypeError, function() {
Object.getOwnPropertySymbols(proxy);
});
reportCompare(0, 0);
|
