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class FinalizationRegistry<T>

package js.lib

@:native("FinalizationRegistry")

Available on js

A FinalizationRegistry object lets you request a callback when a value is garbage-collected.

Documentation FinalizationRegistry by Mozilla Contributors, licensed under CC-BY-SA 2.5.

Constructor

new(cleanupCallback:T ‑> Void)

Creates a new FinalizationRegistry with the given cleanup callback.

Methods

register(target:{}, heldValue:T, ?unregisterToken:{}):Void

Registers a target object with the registry, associating it with a held value and an optional unregister token.

unregister(unregisterToken:{}):Bool

Unregisters any registrations associated with the given unregister token. Returns true if at least one registration was removed.