/**
 * ## StopWatch
 * This class generates a stopwatch so you can find out how long it takes to complete any given action.
 * You can start, stop, restart and resume this stopwatch at any time.
 */
export default class StopWatch {
    private startTime;
    private endTime;
    /**
     * This method returns the total elapsed time by milliseconds.
     * It returns a 0 value if the stopwatch already never started.
     */
    get elapsedTime(): number;
    /**
     * This method is used to start the stopwatch.
     */
    Start(): void;
    /**
     * This method stops the stopwatch and returns the total elapsed time by milliseconds.
     * However, the elapsed time is not reset.
     * @returns Total Elapsed Time
     */
    Stop(): number;
    /**
     * This method stops the stopwatch.
     * Also, it stops the stopwatch, if the stopwatch currently is running.
     */
    Reset(): void;
    /**
     * This method resumes your stopwatch.
     */
    Resume(): void;
}