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
|
// |reftest| skip-if(!this.hasOwnProperty('FinalizationRegistry')) -- FinalizationRegistry is not enabled unconditionally
// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-finalization-registry-target
description: >
The [[Prototype]] internal slot is computed from NewTarget.
info: |
FinalizationRegistry ( cleanupCallback )
...
3. Let finalizationRegistry be ? OrdinaryCreateFromConstructor(NewTarget, "%FinalizationRegistryPrototype%", « [[Realm]], [[CleanupCallback]], [[Cells]], [[IsFinalizationRegistryCleanupJobActive]] »).
...
9. Return finalizationRegistry.
OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )
...
2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).
3. Return ObjectCreate(proto, internalSlotsList).
GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )
3. Let proto be ? Get(constructor, 'prototype').
4. If Type(proto) is not Object, then
a. Let realm be ? GetFunctionRealm(constructor).
b. Set proto to realm's intrinsic object named intrinsicDefaultProto.
5. Return proto.
features: [FinalizationRegistry, Reflect.construct]
---*/
var finalizationRegistry;
finalizationRegistry = Reflect.construct(FinalizationRegistry, [function() {}], Object);
assert.sameValue(Object.getPrototypeOf(finalizationRegistry), Object.prototype, 'NewTarget is built-in Object constructor');
var newTarget = function() {}.bind(null);
Object.defineProperty(newTarget, 'prototype', {
get: function() {
return Array.prototype;
}
});
finalizationRegistry = Reflect.construct(FinalizationRegistry, [function() {}], newTarget);
assert.sameValue(Object.getPrototypeOf(finalizationRegistry), Array.prototype, 'NewTarget is BoundFunction with accessor');
reportCompare(0, 0);
|
