import * as dateFns from 'date-fns';
export declare class DateFn {
    private static readonly DEFAULT_IST_OFFSET;
    static readonly fns: typeof dateFns;
    static addMinutes(date: Date, minutes: number): Date;
    static subMinutes(date: Date, minutes: number): Date;
    static addHours(date: Date, hours: number): Date;
    static subHours(date: Date, hours: number): Date;
    static addDays(date: Date, days: number): Date;
    static subDays(date: Date, days: number): Date;
    static addMonths(date: Date, months: number): Date;
    static subMonths(date: Date, months: number): Date;
    static addWeeks(date: Date, weeks: number): Date;
    static subWeeks(date: Date, weeks: number): Date;
    static startOfDay(date: Date): Date;
    static endOfDay(date: Date): Date;
    static startOfMonth(date: Date): Date;
    static endOfMonth(date: Date): Date;
    static startOfYear(date: Date): Date;
    static endOfYear(date: Date): Date;
    static startOfQuarter(date: Date): Date;
    static endOfQuarter(date: Date): Date;
    static startOfWeek(date: Date): Date;
    static endOfWeek(date: Date): Date;
    static parse(str: string, format: string): Date | null;
    static parseToUtc(str: string, format: string, istOffset?: number): Date | null;
    static parseAsDateToUtc(str: string, istOffset?: number): Date | null;
    static toIST(date: Date, minutes?: number): Date;
    static toUTC(date: Date, minutes?: number): Date;
    static parseISO(str: string): Date;
    static fromUnixTime(time: number): Date;
    static getServerOffset(): number;
    static format(date: Date, formatStr: string): string;
}