import type { Ref } from 'vue';
export declare function useIsMobile(): import("vue").ComputedRef<boolean>;
export declare function useIsTablet(): import("vue").ComputedRef<boolean>;
export declare function useIsSmallDesktop(): import("vue").ComputedRef<boolean>;
export declare function i18n(data: Record<string, Record<string, string>>): {
    locale: Ref<string, string>;
    t(key: string): string;
};
export declare namespace i18n {
    var provide: (localeRef: Ref) => void;
}