/**
 * Creates an i18nNext instance with the specified default language.
 *
 * @param {string} [defaultLang] - The default language to be used.
 * @return {Object} An object containing the initialized i18nNext instance and an `init` function to initialize the instance.
 */
export declare function createI18nNext(defaultLang?: string): {
    init: () => Promise<import("i18next").TFunction<"translation", undefined>>;
    instance: import("i18next").i18n;
};