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
56
57
58
59
60
61
62
63
64
|
// 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-getownproperty-p
description: >
If "getOwnPropertyDescriptor" trap is null or undefined, [[GetOwnProperty]]
call is properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
[[GetOwnProperty]] ( P )
[...]
5. Let target be O.[[ProxyTarget]].
6. Let trap be ? GetMethod(handler, "getOwnPropertyDescriptor").
7. If trap is undefined, then
a. Return ? target.[[GetOwnProperty]](P).
includes: [propertyHelper.js]
features: [Proxy]
---*/
var plainObjectTarget = new Proxy({foo: 1}, {});
var plainObjectProxy = new Proxy(plainObjectTarget, {
getOwnPropertyDescriptor: null,
});
verifyProperty(plainObjectProxy, "bar", undefined);
verifyProperty(plainObjectProxy, "foo", {
value: 1,
writable: true,
enumerable: true,
configurable: true,
});
var fooDescriptor = {
get: function() {},
set: function(_value) {},
enumerable: false,
configurable: true,
};
var target = new Proxy({}, {
getOwnPropertyDescriptor: function(_target, key) {
if (key === "foo") {
return fooDescriptor;
}
},
deleteProperty: function(_target, key) {
if (key === "foo") {
fooDescriptor = undefined;
}
return true;
},
});
var proxy = new Proxy(target, {
getOwnPropertyDescriptor: null,
});
verifyProperty(proxy, "bar", undefined);
verifyProperty(proxy, "foo", fooDescriptor);
reportCompare(0, 0);
|
