import type { HierarchyNodeDatum, SankeyLinkDatum, SankeyLinkElement, SankeyNodeElement } from './interface';
export declare const calculateNodeValue: (subTree: HierarchyNodeDatum[]) => number;
export declare function makeHierarchicNodes(originalNodes: HierarchyNodeDatum[], nodeKeyFunc: (node: HierarchyNodeDatum) => string, nodes?: SankeyNodeElement[], nodeMap?: Record<string | number, SankeyNodeElement>, originalLinks?: (SankeyLinkDatum & {
    parents?: SankeyNodeElement[];
})[]): SankeyNodeElement[];
export declare function computeHierarchicNodeLinks(originalNodes: HierarchyNodeDatum[], nodeKeyFunc: (node: HierarchyNodeDatum) => string): {
    nodes: SankeyNodeElement[];
    links: SankeyLinkElement[];
    nodeMap: Record<string | number, SankeyNodeElement>;
};
export declare function computeNodeValues(nodes: SankeyNodeElement[]): void;