Created
December 20, 2023 10:48
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WeakRefSet holds weak references and is iterable
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| export class WeakRefSet<T extends WeakKey> { | |
| readonly #set = new Set<WeakRef<T>>() | |
| add(value: T): void {this.#set.add(new WeakRef<T>(value))} | |
| forEach(callback: (value: T) => void): void { | |
| for (const weakRef of this.#set) { | |
| const value = weakRef.deref() | |
| if (value === undefined) { | |
| this.#set.delete(weakRef) | |
| } else { | |
| callback(value) | |
| } | |
| } | |
| } | |
| countReferences(): number { | |
| let count = 0 | |
| this.forEach(() => count++) | |
| return count | |
| } | |
| clear(): void {this.#set.clear()} | |
| } |
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