import type { RefObject } from 'react';
declare const PLACEMENTS: readonly ['top', 'right', 'bottom', 'left', 'nested-menu'];
type Placements = (typeof PLACEMENTS)[number];
type AddPrefixToUnion<T extends string, P extends string> = T extends string ? `${P}${T}` : never;
type AutoPlacements = AddPrefixToUnion<Exclude<Placements, 'nested-menu'>, 'auto-'> | 'auto';
export type PopupPlacement = AutoPlacements | Placements;
export type PopupAlign = 'start' | 'center';
export declare const DEFAULT_ARROW_WIDTH = 8;
export declare const DEFAULT_POSITIONS: {
    arrowLeft: number;
    arrowTop: number;
    arrowTransform: string;
    placement: string;
    popupInitialPosition: string;
    popupPosition: string;
    rotate: number;
};
type ComputePositionsTypes = {
    placement: PopupPlacement;
    childrenRef: RefObject<HTMLDivElement | null>;
    popupRef: RefObject<HTMLDivElement | null>;
    popupPortalTarget: HTMLElement;
    hasArrow: boolean;
    align: PopupAlign;
};
/**
 * This function will compute the positions of popup and arrow based on children position and popup size
 */
export declare const computePositions: ({ placement, childrenRef, popupRef, popupPortalTarget, hasArrow, align, }: ComputePositionsTypes) => {
    arrowLeft: number;
    arrowTop: number;
    arrowTransform: string;
    placement: string;
    popupInitialPosition: string;
    popupPosition: string;
    rotate: number;
};
export {};
//# sourceMappingURL=helpers.d.ts.map