import type { FloatingElement, ReferenceElement, MiddlewareData } from "@floating-ui/dom";
import type { Ref } from "vue";
import type { UsePopperOptions } from "./types";
export declare function usePopper(reference: Ref<ReferenceElement>, // 参照元素
popper: Ref<FloatingElement>, // 定位元素
options?: UsePopperOptions): {
    position: import("vue").ComputedRef<{
        x: number;
        y: number;
        strategy: "fixed" | "absolute";
    }>;
    strategy: Ref<"fixed" | "absolute">;
    placement: Ref<"top" | "left" | "right" | "bottom" | "top-start" | "top-end" | "bottom-start" | "bottom-end" | "right-start" | "right-end" | "left-start" | "left-end">;
    popperStyle: import("vue").ComputedRef<{
        top: string;
        left: string;
        position: "fixed" | "absolute";
    }>;
    middlewareData: import("vue").ShallowRef<MiddlewareData>;
    update: () => void;
    stopAutoUpdate: Ref<(() => void) | undefined>;
    startAutoUpdate: Ref<(() => void) | undefined>;
};