/**
* @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
*/
/**
* @module ai/aichat/utils/promisequeue
*/
import { type EmitterMixinConstructor } from "@ckeditor/ckeditor5-utils";
declare const PromiseQueueBase: EmitterMixinConstructor;
export declare class PromiseQueue extends PromiseQueueBase {
	isProcessing: boolean;
	/**
	* Adds a task to the queue. An abort signal is provided to the callback to allow it to abort the task.
	*/
	enqueue(callback: PromiseQueueTaskCallback): Promise<void>;
	/**
	* Aborts the queue, rejects all pending tasks and resets it to initial state.
	*/
	abort(): void;
	/**
	* A promise that resolves when the queue is empty.
	*/
	get queueEmptyPromise(): Promise<void>;
	/**
	* Processes the queue sequentially.
	*/
	private _processQueue;
}
type PromiseQueueTaskCallback = (signal: AbortSignal) => Promise<void>;
export {};