import { QueueOptions } from '../types';
/** Item of the queue. */
export interface QueueItem<A = unknown[]> {
    /** Runs the item. */
    run(...args: unknown[]): Promise<unknown>;
    /** Arguments to pass to the item. */
    args: A;
    /** Time when the item was added to the queue. */
    time?: number;
    /** Time to wait until next item. */
    timeout: number;
}
/** Queue class. */
export declare class Queue {
    options: QueueOptions;
    /** Whether the queue is paused. */
    private paused;
    /** List of items in the queue. */
    private queue;
    /** Creates an instance of Queue. */
    constructor(options: QueueOptions);
    /** Starts the queue and run's the item functions. */
    start(): Promise<Queue>;
    /** Runs the next item in the queue. */
    next(): Promise<unknown>;
    /** Stops the queue. */
    stop(): this;
    /** Resumes the queue. */
    resume(): this;
    /** Adds an item to the queue. */
    add(item: QueueItem): this;
}