Method #onEvent

source/index.ts:767–780

(event: EventName, filter?: () => boolean)

	}

	async #onEvent(event: EventName, filter?: () => boolean): Promise<void> {
		return new Promise(resolve => {
			const listener = () => {
				if (filter && !filter()) {
					return;
				}

				this.off(event, listener);
				resolve();
			};

			this.on(event, listener);
		});
	}

	/**
	Size of the queue, the number of queued items waiting to run.