import React from "react";
import "./Timer.scss";
export declare type TimerStateType = "INITED" | "PLAYING" | "PAUSED" | "STOPPED";
interface TimerProps {
    direction?: "forward" | "backward";
    initialTime?: number;
    timeToUpdate?: number;
    startImmediately?: boolean;
    formatValue?: (value: number) => string;
    onStart?: () => any;
    onResume?: () => any;
    onPause?: () => any;
    onStop?: () => any;
    onReset?: () => any;
    lastUnit?: "ms" | "s" | "m" | "h" | "d";
    checkpoints?: Array<{
        time: number;
        callback: () => any;
    }>;
}
export interface IJDTimerProps extends TimerProps {
}
declare const JDTimer: React.FC<IJDTimerProps>;
export default JDTimer;