export default class Countdown extends HTMLElement {
    private dom;
    private startTime;
    private timeid;
    private num;
    private second;
    private minute;
    private hour;
    private day;
    private is_start;
    private is_run;
    constructor();
    start(): void;
    stop(): void;
    continue(): void;
    reset(): void;
    set_num(num: number): void;
    set_time(time: number): void;
    setformat(type: number): void;
    private Initialize;
    private init;
    private formatSeconds;
    private supplement;
    private time;
}