import type { Placement } from '../types';
type ArrowSide = 'top' | 'bottom' | 'left' | 'right';
/**
 * Get which side of the tooltip the arrow should appear on.
 * The arrow points FROM the tooltip TOWARD the target.
 */
export declare function getArrowSide(placement: Placement): ArrowSide;
/**
 * Get CSS styles for the arrow element based on its position and the resolved placement.
 */
export declare function getArrowStyle(arrowPos: {
    x: number;
    y: number;
}, placement: Placement): React.CSSProperties;
export {};