import type { Locale } from 'date-fns';
/** Resolve a date-fns locale by kit language code. Base English and the fallback use enGB; en-US stays regional. */
export declare function getDateFnsLocale(lang: string): Promise<Locale>;
/** Subscribe a component to its date-fns locale. Returns `undefined` while
 *  the dynamic-import resolves; date-fns and react-day-picker both treat
 *  `undefined` as English defaults; callers wait before rendering the calendar. */
export declare function useDateFnsLocale(lang: string): Locale | undefined;
/** Get short date format string for a locale. */
export declare function getShortDateFormat(lang: string): string;
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