mirror of
https://github.com/denoland/deno.git
synced 2024-12-27 01:29:14 -05:00
76 lines
3 KiB
TypeScript
76 lines
3 KiB
TypeScript
/*! *****************************************************************************
|
|
Copyright (c) Microsoft Corporation. All rights reserved.
|
|
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
|
|
this file except in compliance with the License. You may obtain a copy of the
|
|
License at http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
|
|
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
|
|
MERCHANTABLITY OR NON-INFRINGEMENT.
|
|
|
|
See the Apache Version 2.0 License for specific language governing permissions
|
|
and limitations under the License.
|
|
***************************************************************************** */
|
|
|
|
|
|
/// <reference no-default-lib="true"/>
|
|
|
|
interface WeakRef<T extends WeakKey> {
|
|
readonly [Symbol.toStringTag]: "WeakRef";
|
|
|
|
/**
|
|
* Returns the WeakRef instance's target value, or undefined if the target value has been
|
|
* reclaimed.
|
|
* In es2023 the value can be either a symbol or an object, in previous versions only object is permissible.
|
|
*/
|
|
deref(): T | undefined;
|
|
}
|
|
|
|
interface WeakRefConstructor {
|
|
readonly prototype: WeakRef<any>;
|
|
|
|
/**
|
|
* Creates a WeakRef instance for the given target value.
|
|
* In es2023 the value can be either a symbol or an object, in previous versions only object is permissible.
|
|
* @param target The target value for the WeakRef instance.
|
|
*/
|
|
new<T extends WeakKey>(target: T): WeakRef<T>;
|
|
}
|
|
|
|
declare var WeakRef: WeakRefConstructor;
|
|
|
|
interface FinalizationRegistry<T> {
|
|
readonly [Symbol.toStringTag]: "FinalizationRegistry";
|
|
|
|
/**
|
|
* Registers a value with the registry.
|
|
* In es2023 the value can be either a symbol or an object, in previous versions only object is permissible.
|
|
* @param target The target value to register.
|
|
* @param heldValue The value to pass to the finalizer for this value. This cannot be the
|
|
* target value.
|
|
* @param unregisterToken The token to pass to the unregister method to unregister the target
|
|
* value. If not provided, the target cannot be unregistered.
|
|
*/
|
|
register(target: WeakKey, heldValue: T, unregisterToken?: WeakKey): void;
|
|
|
|
/**
|
|
* Unregisters a value from the registry.
|
|
* In es2023 the value can be either a symbol or an object, in previous versions only object is permissible.
|
|
* @param unregisterToken The token that was used as the unregisterToken argument when calling
|
|
* register to register the target value.
|
|
*/
|
|
unregister(unregisterToken: WeakKey): void;
|
|
}
|
|
|
|
interface FinalizationRegistryConstructor {
|
|
readonly prototype: FinalizationRegistry<any>;
|
|
|
|
/**
|
|
* Creates a finalization registry with an associated cleanup callback
|
|
* @param cleanupCallback The callback to call after a value in the registry has been reclaimed.
|
|
*/
|
|
new<T>(cleanupCallback: (heldValue: T) => void): FinalizationRegistry<T>;
|
|
}
|
|
|
|
declare var FinalizationRegistry: FinalizationRegistryConstructor;
|