export declare class CountDownTime {
    isStart: boolean;
    isStop: boolean;
    nextRound: boolean;
    initTime: number;
    timeLeft: number;
    isCancel: boolean;
    private destroy$;
    constructor(initTime: number);
    start(): void;
    stop(): void;
    downTime(): void;
    cancel(): void;
    oberserableTimer(isStop: any): void;
    onDestroy(): void;
}