export declare class TimeSpan {
    private epochMilliSeconds;
    constructor(date: Date);
    constructor(timeString: string);
    constructor(epochMilliSeconds: number);
    constructor(hours: number, minutes: number, seconds: number, milliSeconds?: number);
    [Symbol.toPrimitive](hint?: "number" | "string" | "default"): string | number;
    valueOf(): number;
    getHours(): number;
    getMinutes(): number;
    getSeconds(): number;
    getMilliseconds(): number;
    setHours(hours: number): number;
    setMinutes(minutes: number): number;
    setSeconds(seconds: number): number;
    setMilliSeconds(milliSeconds: number): number;
    addHours(hours: number): TimeSpan;
    addMinutes(minutes: number): TimeSpan;
    addSeconds(seconds: number): TimeSpan;
    addMilliSeconds(milliSeconds: number): TimeSpan;
    totalDays(): number;
    totalHours(): number;
    totalMinutes(): number;
    totalSeconds(): number;
    totalMilliSeconds(): number;
    toString(): string;
    toJSON(): string;
    static parse(timeSpan: string): TimeSpan;
}