import type { HierarchyRectangularNode } from '@visx/hierarchy/lib/types.js';
import type { LegendItem } from '../../core/components/legend/categorical/types/legend.js';
import type { HighlightingMap, InternalTreeMapNode } from '../types/internal.js';
export declare const getNodeOpacity: (entry: HierarchyRectangularNode<InternalTreeMapNode>, highlightingMap: HighlightingMap, highlightedItems?: LegendItem[]) => number;