export declare const now: () => Date;
export declare const isValidDate: (value: any) => number;
export declare const year: (date: Date) => number;
export declare const month: (date: Date) => number;
export declare const day: (date: Date) => number;
export declare const increaseYear: (date: Date, years: number) => number;
export declare const decreaseYear: (date: Date, years: number) => number;
export declare const isInRange: (date: Date, minDate: Date, maxDate: Date) => boolean;
export declare const format: (date: Date) => string;
export declare const getLastDayOfMonth: (year: number, month: number) => number;
export declare const getFirstDayOfTheWeek: (date: Date) => Date;
export declare const isSameYear: (a: Date, b: Date) => boolean;
export declare const isSameMonth: (a: Date, b: Date) => boolean;
export declare const isSameDay: (a: Date, b: Date) => boolean;
export declare const isSameWeek: (a: Date, b: Date) => boolean;
