import { Ref } from 'vue';
import type { Placement } from '@popperjs/core';
import type { Placements } from '../../types';
import type { Alignments } from './types';
export declare const getAlignmentClassNames: (alignment: Alignments) => string[];
export declare const getPlacement: (placement: Placement, direction: string | undefined, alignment: Alignments | string | undefined, isRTL: boolean) => Placements;
export declare const getReferenceElement: (reference: "parent" | "toggle" | Ref<HTMLElement | null> | HTMLElement, dropdownToggleRef: Ref<HTMLElement | null>, dropdownRef: Ref<HTMLElement | null>) => HTMLElement | null;