/**
 * Polling v1.0.1
 * https://github.com/bvejs/bve/tree/master/packages/bve-polling#readme
 *
 * @license
 * Copyright (c) 2020 BVE Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 *  1. Redistribution of source code must retain the above copyright notice, this
 *     list of conditions and the following disclaimer.
 * 
 *  2. Redistribution in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 * 
 *  3. Neither the name of the copyright holder nor the names of its contributors
 *     may be used to endorse or promote products derived from this software without
 *     specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT DESIGNED, LICENSED OR INTENDED FOR USE
 * IN THE DESIGN, CONSTRUCTION, OPERATION OR MAINTENANCE OF ANY MILITARY FACILITY.
 */
/**
 * 轮询操作
 * 如果add方法是同步方法，则直接执行
 * 如果是异步方法，会等上一个执行完在执行下一次
 * 如果异步方法连续失败3次，中止执行
 */
type TasksType = {
    [key: string]: (...args: Array<any>) => any;
};
type StatusType = {
    [key: string]: {
        count: number;
        status: "pending" | "fulfilled" | "rejected";
    };
};
declare class Polling {
    #private;
    constructor(interval?: number);
    start(): void;
    add(key: string, fn: (...args: Array<any>) => any, ...args: Array<any>): void;
    del(key?: string): void;
    stop(): void;
}

export { StatusType, TasksType, Polling as default };