import { CalendarDate, DateDuration, DateValue } from '@internationalized/date';
export declare function multipleDuration(duration: DateDuration, times: number): {
    years?: number | undefined;
    months?: number | undefined;
    weeks?: number | undefined;
    days?: number | undefined;
};
export declare function alignStart(date: CalendarDate, duration: DateDuration, minValue?: DateValue | null, maxValue?: DateValue | null): CalendarDate;
export declare function constrainStart(date: CalendarDate, aligned: CalendarDate, duration: DateDuration, minValue?: DateValue | null, maxValue?: DateValue | null): CalendarDate;
export declare function constrainValue(date: CalendarDate, minValue?: DateValue | null, maxValue?: DateValue | null): CalendarDate;
export declare function previousAvailableDate(date: CalendarDate, minValue: DateValue, isDateUnavailable: ((date: CalendarDate) => boolean) | undefined): CalendarDate | undefined;
export declare function alignEnd(date: CalendarDate, duration: DateDuration, minValue?: DateValue | null, maxValue?: DateValue | null): CalendarDate;
/**
 * Almost copied from https://weeknumber.com/how-to/javascript
 * No corresponding API found in @internationalized/date package, at the time
 * of writing this.
 * Caveat: this code is based on built-in Date object, and may not be
 * calendar-agnostic. We don't really care about supporting different types
 * of calendar, so it should be fine for now. But we can look into improving
 * this if needed.
 */
export declare const getWeekNumber: (dateValue: DateValue) => number;
/**
 * Returns an array of dates in the week index counted from the provided start date, or the first
 * visible date if not given. The returned array always has 7 elements, but may include null if
 * the date does not exist according to the calendar system.
 */
export declare function getDatesInWeek(weekIndex: number, from: CalendarDate, locale: string): Array<CalendarDate | null>;
export declare function isInvalid(date: DateValue, minValue: DateValue | undefined | null, maxValue: DateValue | undefined | null): boolean;