import React from "react";
/**
 * Groups HTML elements by their vertical position (top coordinate)
 * and includes bottom position information
 */
export interface NodePosition {
    elements: Set<HTMLElement>;
    bottom: number;
    top: number;
}
export declare function groupNodesByTopPosition(nodes: HTMLElement[]): Record<number, NodePosition>;
/**
 * Helper function to get row information from container
 * Returns itemsSizesMap, rowPositions, and children or null if the container is not available
 */
export declare function getRowPositionsData(containerRef: React.RefObject<HTMLElement | null>, overflowRef: React.RefObject<HTMLElement | null>): {
    itemsSizesMap: Record<number, NodePosition>;
    rowPositions: number[];
    children: HTMLElement[];
} | null;