| // 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: Default [[Prototype]] value derived from realm of the 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, cross-realm, Reflect, Symbol] |
| ---*/ |
| |
| var other = $262.createRealm().global; |
| var newTarget = new other.Function(); |
| function fn() {} |
| var finalizationRegistry; |
| |
| newTarget.prototype = undefined; |
| finalizationRegistry = Reflect.construct(FinalizationRegistry, [fn], newTarget); |
| assert.sameValue(Object.getPrototypeOf(finalizationRegistry), other.FinalizationRegistry.prototype, 'newTarget.prototype is undefined'); |
| |
| newTarget.prototype = null; |
| finalizationRegistry = Reflect.construct(FinalizationRegistry, [fn], newTarget); |
| assert.sameValue(Object.getPrototypeOf(finalizationRegistry), other.FinalizationRegistry.prototype, 'newTarget.prototype is null'); |
| |
| newTarget.prototype = true; |
| finalizationRegistry = Reflect.construct(FinalizationRegistry, [fn], newTarget); |
| assert.sameValue(Object.getPrototypeOf(finalizationRegistry), other.FinalizationRegistry.prototype, 'newTarget.prototype is a Boolean'); |
| |
| newTarget.prototype = ''; |
| finalizationRegistry = Reflect.construct(FinalizationRegistry, [fn], newTarget); |
| assert.sameValue(Object.getPrototypeOf(finalizationRegistry), other.FinalizationRegistry.prototype, 'newTarget.prototype is a String'); |
| |
| newTarget.prototype = Symbol(); |
| finalizationRegistry = Reflect.construct(FinalizationRegistry, [fn], newTarget); |
| assert.sameValue(Object.getPrototypeOf(finalizationRegistry), other.FinalizationRegistry.prototype, 'newTarget.prototype is a Symbol'); |
| |
| newTarget.prototype = 1; |
| finalizationRegistry = Reflect.construct(FinalizationRegistry, [fn], newTarget); |
| assert.sameValue(Object.getPrototypeOf(finalizationRegistry), other.FinalizationRegistry.prototype, 'newTarget.prototype is a Number'); |
| |