/**
 * A work queue that processes actions in sequence.
 *
 * @public
 * @extends {Disposable}
 */
export default class Serializer extends Disposable {
    /**
     * Gets the sequence of the item that was last processed.
     *
     * @public
     * @returns {number}
     */
    public getCurrent(): number;
    /**
     * The total number of items that have been added to the queue.
     *
     * @public
     * @returns {number}
     */
    public getTotal(): number;
    /**
     * The number of items that are currently pending.
     *
     * @public
     * @returns {number}
     */
    public getPending(): number;
    /**
     * Indicates if a work item is currently being processed.
     *
     * @public
     * @returns {boolean}
     */
    public getRunning(): boolean;
    /**
     * Adds a new action to the processing queue. If the action
     * is asynchronous, the action should return a promise.
     *
     * @public
     * @param {Function} actionToEnqueue
     * @returns {Promise} - A promise which resolves once the action has been processed.
     */
    public enqueue(actionToEnqueue: Function): Promise<any>;
    /**
     * Allows an inheriting class to override the internal {@link Queue} implementation.
     *
     * @protected
     * @returns {Queue|*}
     */
    protected _getWorkQueue(): Queue | any;
    #private;
}
import Disposable from './../lang/Disposable.js';
import Queue from './../collections/Queue.js';