export declare function asDate(date: number | Date | string): Date | undefined;
export declare function asString(date: Date, format?: string): string;
export declare function clearTimezone(date: Date): Date;
export declare function getNzDisabledDate(current: Date, dateOnlyPast: boolean, dateOnlyFuture: boolean): boolean;
export declare function secondsToTimestamp(seconds: any): string;