/**
 * Language validator route component for i18n routing
 * Validates the language parameter and syncs with i18next
 */
export interface LanguageValidatorProps {
    /**
     * Function to check if a language code is supported
     * Required to validate against your app's supported languages
     */
    isLanguageSupported: (lang: string) => boolean;
    /**
     * Default language to redirect to when invalid
     * @default 'en'
     */
    defaultLanguage?: string;
    /**
     * localStorage key for persisting language preference
     * @default 'language'
     */
    storageKey?: string;
    /**
     * Custom fallback component to render instead of null during redirect
     */
    fallback?: React.ReactNode;
}
/**
 * Route wrapper that validates the language parameter and syncs i18n.
 * Use this as a parent route to wrap all language-prefixed routes.
 *
 * @example
 * ```tsx
 * // In your router config
 * const router = createBrowserRouter([
 *   {
 *     path: '/:lang',
 *     element: <LanguageValidator isLanguageSupported={isLangSupported} />,
 *     children: [
 *       { path: '', element: <HomePage /> },
 *       { path: 'about', element: <AboutPage /> },
 *     ],
 *   },
 * ]);
 * ```
 */
export declare function LanguageValidator({ isLanguageSupported, defaultLanguage, storageKey, fallback, }: LanguageValidatorProps): React.ReactElement | null;
export default LanguageValidator;
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