export declare function addDays(date: Date, days: number): Date;
export declare function getFirstOfWeek(date: Date, firstDayOfWeek: number): Date;
export declare function getLastOfWeek(date: Date, firstDayOfWeek: number): Date;
export declare function getDaysOfMonth(date: Date, padded?: boolean, firstDayOfWeek?: number): Date[];
export declare function getFirstOfMonth(date: Date): Date;
export declare function getISODateString(date: Date): string;
export declare function getLastOfMonth(date: Date): Date;
export declare function getMonth(date: Date): number;
export declare function getMonths(locale?: string): string[];
export declare function getNextDay(date: Date): Date;
export declare function getNextMonth(date: Date): Date;
export declare function getNextYear(date: Date): Date;
export declare function getPreviousDay(date: Date): Date;
export declare function getPreviousMonth(date: Date): Date;
export declare function getPreviousYear(date: Date): Date;
export declare function getWeekDays(firstDayOfWeek: number, locale?: string): string[][];
export declare function getYear(date: Date): number;
export declare function isDateInRange(date: Date, range: {
  from: Date;
  to: Date;
}): boolean;
export declare function isSameDay(date1?: Date, date2?: Date): boolean;
export declare function removeTimezoneOffset(date: Date): Date;
export declare function subDays(date: Date, days: number): Date;