import { type WeekdayLabel } from '../date/dateLocale';
import type { CalendarDate, DateCalendar, DateValue, FirstDayOfWeek } from '../date/types';
export type CalendarCellModel = Readonly<{
    gridKey: string;
    value: DateValue | null;
    calendarDate: CalendarDate | null;
    dayLabel: string;
    accessibleLabel: string;
    isAdjacentMonth: boolean;
    isFocused: boolean;
    isSelected: boolean;
    isToday: boolean;
    isUnavailable: boolean;
    isOutOfRange: boolean;
    isOutsideSupportedRange: boolean;
    isDisabled: boolean;
    isReadOnly: boolean;
    isFocusable: boolean;
}>;
export type CalendarGridModel = Readonly<{
    cells: readonly CalendarCellModel[];
    heading: string;
    firstDayOfWeek: FirstDayOfWeek;
    monthStartValue: DateValue;
    weekdayLabels: readonly WeekdayLabel[];
}>;
export type CreateCalendarGridModelOptions = Readonly<{
    focusedValue: DateValue;
    visibleMonthValue?: DateValue;
    selectedValue?: DateValue | null;
    todayValue?: DateValue;
    minValue?: DateValue;
    maxValue?: DateValue;
    isDateUnavailable?: (value: DateValue) => boolean;
    locale: string;
    calendar: DateCalendar;
    firstDayOfWeek?: FirstDayOfWeek;
    disabled?: boolean;
    readOnly?: boolean;
}>;
export declare function createCalendarGridModel({ focusedValue, visibleMonthValue, selectedValue, todayValue, minValue, maxValue, isDateUnavailable, locale, calendar, firstDayOfWeek, disabled, readOnly, }: CreateCalendarGridModelOptions): CalendarGridModel;
export declare function canSelectCalendarCell(cell: CalendarCellModel): cell is CalendarCellModel & Readonly<{
    value: DateValue;
}>;
export type ResolveInitialCalendarFocusOptions = Readonly<{
    value?: DateValue | null;
    defaultFocusedValue?: DateValue;
    today: DateValue;
    minValue?: DateValue;
    maxValue?: DateValue;
}>;
export declare function resolveInitialCalendarFocus({ value, defaultFocusedValue, today, minValue, maxValue, }: ResolveInitialCalendarFocusOptions): DateValue;
export type CalendarFocusMovement = Readonly<{
    unit: 'day' | 'week' | 'month' | 'year';
    amount: number;
}> | Readonly<{
    unit: 'week-start' | 'week-end';
}>;
export type MoveCalendarFocusOptions = Readonly<{
    calendar: DateCalendar;
    firstDayOfWeek: FirstDayOfWeek;
}>;
export declare function moveCalendarFocus(value: DateValue, movement: CalendarFocusMovement, { calendar, firstDayOfWeek }: MoveCalendarFocusOptions): DateValue;
export declare function getHorizontalDayDelta(key: 'ArrowLeft' | 'ArrowRight', direction: 'ltr' | 'rtl'): -1 | 1;
export type CalendarState = Readonly<{
    focusedValue: DateValue;
    visibleMonthValue: DateValue;
}>;
export type CalendarStateAction = Readonly<{
    type: 'move-focus';
    movement: CalendarFocusMovement;
    calendar: DateCalendar;
    firstDayOfWeek: FirstDayOfWeek;
}> | Readonly<{
    type: 'set-focused-value';
    value: DateValue;
    calendar: DateCalendar;
}>;
export declare function createCalendarState(focusedValue: DateValue, calendar: DateCalendar): CalendarState;
export declare function calendarStateReducer(state: CalendarState, action: CalendarStateAction): CalendarState;
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