import { Schema as S } from 'effect';
import type { CalendarDate } from './calendarDate.js';
/**
 * Locale configuration for rendering calendar dates. Contains only data —
 * month/day names and the first day of the week. Formatting functions
 * (`formatLong`, `formatShort`, `formatAriaLabel`) are separate exports that
 * take a `LocaleConfig` as input.
 *
 * Day names are always stored Sunday-first in the config; `firstDayOfWeek`
 * controls how the view rotates them at render time.
 */
export declare const LocaleConfig: S.Struct<{
    readonly firstDayOfWeek: S.Literals<readonly ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]>;
    readonly monthNames: S.Tuple<readonly [S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String]>;
    readonly shortMonthNames: S.Tuple<readonly [S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String, S.String]>;
    readonly dayNames: S.Tuple<readonly [S.String, S.String, S.String, S.String, S.String, S.String, S.String]>;
    readonly shortDayNames: S.Tuple<readonly [S.String, S.String, S.String, S.String, S.String, S.String, S.String]>;
}>;
export type LocaleConfig = typeof LocaleConfig.Type;
/**
 * Default English (United States) locale. Picker components default to this
 * when no locale is passed via ViewConfig. Consumers who want a different
 * locale pass their own `LocaleConfig`.
 */
export declare const defaultEnglishLocale: LocaleConfig;
/**
 * Renders a calendar date in long form. Example: `"January 15, 2026"`.
 *
 * @example
 * ```ts
 * import { Calendar } from 'foldkit'
 * import { pipe } from 'effect'
 *
 * Calendar.formatLong(Calendar.make(2026, 1, 15), Calendar.defaultEnglishLocale)
 * // "January 15, 2026"
 *
 * pipe(
 *   Calendar.make(2026, 1, 15),
 *   Calendar.formatLong(Calendar.defaultEnglishLocale),
 * )
 * // "January 15, 2026"
 * ```
 */
export declare const formatLong: {
    (locale: LocaleConfig): (self: CalendarDate) => string;
    (self: CalendarDate, locale: LocaleConfig): string;
};
/**
 * Renders a calendar date in short form. Example: `"Jan 15, 2026"`.
 */
export declare const formatShort: {
    (locale: LocaleConfig): (self: CalendarDate) => string;
    (self: CalendarDate, locale: LocaleConfig): string;
};
/**
 * Renders an accessibility label for a calendar date, suitable for
 * `aria-label` on a grid cell. Example: `"Monday, January 15, 2026"`.
 *
 * @example
 * ```ts
 * import { Calendar } from 'foldkit'
 *
 * Calendar.formatAriaLabel(Calendar.make(2026, 1, 15), Calendar.defaultEnglishLocale)
 * // "Thursday, January 15, 2026"
 * ```
 */
export declare const formatAriaLabel: {
    (locale: LocaleConfig): (self: CalendarDate) => string;
    (self: CalendarDate, locale: LocaleConfig): string;
};
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