import type { IHeaderFooterLocaleData, IMegaMenu, THeaderFooterApi, THeaderMenuLocale } from '../../shared-types/header-menu';
/**
 * Pick the locale slice from a header/footer payload. Falls back to
 * `nb-NO` when the requested locale is missing — the same fallback the
 * legacy oslo.kommune.no header used.
 *
 * Returns `undefined` when the payload doesn't contain the fallback
 * either (e.g. a malformed response). Callers should treat that as an
 * error state.
 */
export declare function selectLocaleData<IconType = string>(api: THeaderFooterApi<IconType> | undefined, locale?: THeaderMenuLocale): IHeaderFooterLocaleData<IconType> | undefined;
/**
 * Convenience wrapper that returns the `megamenu` slice for the given
 * locale.
 */
export declare function selectMegamenu<IconType = string>(api: THeaderFooterApi<IconType> | undefined, locale?: THeaderMenuLocale): IMegaMenu<IconType> | undefined;