import type { HierarchyRectangularNode } from '@visx/hierarchy/lib/types.js';
import type { Formatter } from '../../core/types/formatter.js';
import type { InternalTreeMapNode } from '../types/internal.js';
export declare const getTooltipItem: (formatter: Formatter, content?: HierarchyRectangularNode<InternalTreeMapNode>, unit?: string) => {
    id: string;
    name: string;
    values: string[];
};