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
|
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-object.keys
description: >
Property names are returned in ascending chronological order of creation
that is unaffected by [[DefineOwnProperty]].
info: |
Object.keys ( O )
[...]
2. Let nameList be ? EnumerableOwnPropertyNames(obj, key).
3. Return CreateArrayFromList(nameList).
EnumerableOwnPropertyNames ( O, kind )
[...]
2. Let ownKeys be ? O.[[OwnPropertyKeys]]().
[...]
OrdinaryOwnPropertyKeys ( O )
[...]
3. For each own property key P of O that is a String but is not an array index,
in ascending chronological order of property creation, do
a. Add P as the last element of keys.
[...]
5. Return keys.
includes: [compareArray.js]
---*/
var obj = {};
Object.defineProperty(obj, "a", {
get: function() {},
set: function(_value) {},
enumerable: true,
configurable: true,
});
obj.b = 2;
Object.defineProperty(obj, "a", {value: 1});
assert.compareArray(Object.keys(obj), ["a", "b"]);
reportCompare(0, 0);
|
