import type { Formatter } from '../../core/types/formatter.js';
import { ClusterNode } from '../types/guards/node-guards.js';
import type { NameAccessor } from '../types/treemap.js';
/**
 * Calculates the aggregated data for a treemap based on the provided data and treemap area.
 * @param cluster - TreeMap data cluster node
 * @param areaPerValue - proportionate area of treemap per value
 * @param minNodeSize - node threshold in pixels
 * @param nameAccessor - leaf object property (name or value)
 * @returns - TreeMap data child node with aggregated nodes
 */
export declare const buildAggregatedLeaf: (cluster: ClusterNode, areaPerValue: number, minNodeSize: number, formatter: Formatter, nameAccessor?: NameAccessor) => ClusterNode;