import { type CalendarSelectionMode, type IsoRange } from './selection';
import type { CalendarWeek, IntlLocale } from './types';
export type { CalendarSelectionMode, IsoRange };
/**
 * Returns the JS weekday index (0 = Sunday) that starts the week for `locale`.
 *
 * @remarks Uses `Intl.Locale.weekInfo` when available; falls back to Monday except en-US.
 */
export declare function getWeekStartsOn(locale: IntlLocale): number;
export type BuildCalendarMonthOptions = {
    locale: IntlLocale;
    selectionMode?: CalendarSelectionMode;
    /** Single mode: selected ISO. Multiple: comma-separated. Range: `start/end`. */
    value?: string;
    /** Active range while selecting (anchor + hover preview). */
    rangeDraft?: {
        anchor: string | null;
        hover: string | null;
    };
    min?: string;
    max?: string;
    today?: Date;
};
/** Builds a month grid with leading/trailing days from adjacent months. */
export declare function buildCalendarMonth(year: number, month: number, options: BuildCalendarMonthOptions): CalendarWeek[];