export type YearMonthDayString = string;
export type DateIsoString = string;
export type DateString = YearMonthDayString | DateIsoString;
export type DateConstructorType = string | number | Date;
export interface PickDate {
    (year: number, setTime: SetYear | SetMonth): void;
}
export interface ClickDate {
    (date: YearMonthDayString): void;
}
export interface AddOrSubDate {
    (date: Date, amount: number): Date;
}
export interface OnArrowClick {
    (addOrSubDate: AddOrSubDate): void;
}
export declare const lastDayOfMonth: (dirtyDate: Date) => Date;
export declare const getDaysInMonth: (date: Date) => number;
export declare const addDays: AddOrSubDate;
export declare const toISO: (date: Date) => YearMonthDayString;
export declare const toDate: (dateString: DateString) => Date;
export declare const startOfMonth: (dirtyDate: Date) => Date;
export declare const subDays: AddOrSubDate;
export declare const eachDay: (startDate: Date, endDate: Date) => Date[];
export interface SetMonth {
    (dirtyDate: Date, dirtyMonth: number): Date;
}
export declare const setMonth: SetMonth;
export declare const addMonths: AddOrSubDate;
export declare const subMonths: AddOrSubDate;
export declare const isSameMonth: ({ date, inDate }: {
    date?: Date | undefined;
    inDate: Date;
}) => boolean;
export interface SetYear {
    (dirtyDate: Date, dirtyYear: number): Date;
}
export declare const setYear: SetYear;
export declare const addYears: AddOrSubDate;
export declare const subYears: AddOrSubDate;
export declare const differenceInCalendarMonths: (dirtyDateLeft: Date, dirtyDateRight: Date) => number;