import { type Ref } from 'vue';
export interface PopperTarget {
    getBoundingClientRect: () => DOMRect;
}
export type PopperPosition = 'top' | 'top-start' | 'top-end' | 'right' | 'right-start' | 'right-end' | 'bottom' | 'bottom-start' | 'bottom-end' | 'left' | 'left-start' | 'left-end';
export type Direction = 'top' | 'right' | 'bottom' | 'left';
export type Side = 'start' | 'center' | 'end';
export type Axis = 'top' | 'left';
export interface UsePopperOptions {
    position: () => PopperPosition;
    refGap: () => number;
    viewportGap: () => number;
    arrowSize: number;
}
export declare function usePopper(referenceRef: Ref<PopperTarget | Element | null>, floatingRef: Ref<HTMLElement | null>, enabledRef: Ref<boolean>, options: UsePopperOptions): {
    left: number;
    top: number;
}[];
export declare function computePosition(refRect: DOMRect, floatingSize: {
    width: number;
    height: number;
}, { refGap, position, viewportGap, arrowSize, }: {
    position: PopperPosition;
    refGap: number;
    viewportGap: number;
    arrowSize: number;
}): readonly [{
    top: number;
    left: number;
}, {
    top: number;
    left: number;
}];
export declare function autoUpdate(reference: PopperTarget | Element, floating: Element, update: () => void): () => void;