import type { CalendarDate, DateCalendar, DateValue, IsoDate } from './types';
export declare function validateDateCalendar(calendar: unknown, propName?: string): DateCalendar;
export declare function isIsoLeapYear(year: number): boolean;
export declare function getDaysInIsoMonth(year: number, month: number): number;
export declare function parseDateValue(value: DateValue, propName?: string): IsoDate;
export declare function serializeDateValue(date: IsoDate): DateValue;
export declare function isoDateToEpochDay(date: IsoDate): number;
export declare function epochDayToIsoDate(epochDay: number): IsoDate;
export declare function addIsoDays(date: IsoDate, amount: number): IsoDate;
export declare function addIsoMonths(date: IsoDate, amount: number): IsoDate;
export declare function addIsoYears(date: IsoDate, amount: number): IsoDate;
export declare function compareIsoDates(left: IsoDate, right: IsoDate): -1 | 0 | 1;
export declare function validateDateConstraints(minValue?: DateValue, maxValue?: DateValue): Readonly<{
    minDate?: IsoDate;
    maxDate?: IsoDate;
}>;
export declare function isDateWithinConstraints(date: IsoDate, minDate?: IsoDate, maxDate?: IsoDate): boolean;
export declare function getCalendarDate(date: IsoDate, calendar: DateCalendar): CalendarDate;
export declare function fromCalendarDate(date: CalendarDate, calendar: DateCalendar): IsoDate;
export declare function addCalendarMonths(date: IsoDate, calendar: DateCalendar, amount: number): IsoDate;
export declare function addCalendarYears(date: IsoDate, calendar: DateCalendar, amount: number): IsoDate;
//# sourceMappingURL=dateEngine.d.ts.map