import type { StatefulObservable } from "powerhooks/useGlobalState";
export type { StatefulObservable };
declare const GLOBAL_CONTEXT_KEY = "__i18nifty.useLang.globalContext";
declare global {
    interface Window {
        [GLOBAL_CONTEXT_KEY]: {
            initialLocationHref: string;
        };
    }
}
export declare function createUseLang<Language extends string>(params: {
    languages: readonly Language[];
    fallbackEnabledLanguage: Language;
}): {
    useLang: () => import("powerhooks/useNamedState").UseNamedStateReturnType<Language, "lang">;
    $lang: StatefulObservable<Language>;
};