import { Ref, ComputedRef, Reactive } from 'vue';
export declare function useMounted(): Ref<boolean>;
export declare function useSupported(callback: () => unknown): ComputedRef<boolean>;
export declare function useEventListener(target: HTMLElement | Window | Document, event: string, callback: Function): void;
export declare function useFps(): {
    fps: Ref<number>;
};
export declare function useMediaQuery(mediaQuery: string): {
    match: Ref<boolean>;
};
export declare function useOptionsSupported(prop: 'capture' | 'once' | 'passive' | 'signal'): {
    isSupported: Ref<boolean>;
};
type SlotsExistResult<T extends string | string[]> = T extends string ? ComputedRef<boolean> : Reactive<Record<string, ComputedRef<boolean>>>;
export declare function useSlotsExist<T extends string | string[] = 'default'>(slotsName: T): SlotsExistResult<T>;
export declare function useInject(key: string): {
    colorPalettes: Ref<string[]>;
    shadowColor: Ref<string>;
};
export {};