[6a3a178] | 1 | /*! *****************************************************************************
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| 2 | Copyright (c) Microsoft Corporation. All rights reserved.
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| 3 | Licensed under the Apache License, Version 2.0 (the "License"); you may not use
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| 4 | this file except in compliance with the License. You may obtain a copy of the
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| 5 | License at http://www.apache.org/licenses/LICENSE-2.0
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| 6 |
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| 7 | THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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| 8 | KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
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| 9 | WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
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| 10 | MERCHANTABLITY OR NON-INFRINGEMENT.
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| 11 |
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| 12 | See the Apache Version 2.0 License for specific language governing permissions
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| 13 | and limitations under the License.
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| 14 | ***************************************************************************** */
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| 15 |
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| 16 |
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| 17 |
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| 18 | /// <reference no-default-lib="true"/>
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| 19 |
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| 20 |
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| 21 | interface WeakRef<T extends object> {
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| 22 | readonly [Symbol.toStringTag]: "WeakRef";
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| 23 |
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| 24 | /**
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| 25 | * Returns the WeakRef instance's target object, or undefined if the target object has been
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| 26 | * reclaimed.
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| 27 | */
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| 28 | deref(): T | undefined;
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| 29 | }
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| 30 |
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| 31 | interface WeakRefConstructor {
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| 32 | readonly prototype: WeakRef<any>;
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| 33 |
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| 34 | /**
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| 35 | * Creates a WeakRef instance for the given target object.
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| 36 | * @param target The target object for the WeakRef instance.
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| 37 | */
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| 38 | new<T extends object>(target: T): WeakRef<T>;
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| 39 | }
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| 40 |
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| 41 | declare var WeakRef: WeakRefConstructor;
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| 42 |
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| 43 | interface FinalizationRegistry<T> {
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| 44 | readonly [Symbol.toStringTag]: "FinalizationRegistry";
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| 45 |
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| 46 | /**
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| 47 | * Registers an object with the registry.
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| 48 | * @param target The target object to register.
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| 49 | * @param heldValue The value to pass to the finalizer for this object. This cannot be the
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| 50 | * target object.
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| 51 | * @param unregisterToken The token to pass to the unregister method to unregister the target
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| 52 | * object. If provided (and not undefined), this must be an object. If not provided, the target
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| 53 | * cannot be unregistered.
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| 54 | */
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| 55 | register(target: object, heldValue: T, unregisterToken?: object): void;
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| 56 |
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| 57 | /**
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| 58 | * Unregisters an object from the registry.
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| 59 | * @param unregisterToken The token that was used as the unregisterToken argument when calling
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| 60 | * register to register the target object.
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| 61 | */
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| 62 | unregister(unregisterToken: object): void;
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| 63 | }
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| 64 |
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| 65 | interface FinalizationRegistryConstructor {
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| 66 | readonly prototype: FinalizationRegistry<any>;
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| 67 |
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| 68 | /**
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| 69 | * Creates a finalization registry with an associated cleanup callback
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| 70 | * @param cleanupCallback The callback to call after an object in the registry has been reclaimed.
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| 71 | */
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| 72 | new<T>(cleanupCallback: (heldValue: T) => void): FinalizationRegistry<T>;
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| 73 | }
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| 74 |
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| 75 | declare var FinalizationRegistry: FinalizationRegistryConstructor;
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