import { HierarchyNode } from 'd3-hierarchy';
import { NumericAccessor } from '../../../types/accessor';
import { ChordInputLink, ChordInputNode, ChordNode, ChordRibbon, ChordLinkDatum, ChordHierarchyNode } from '../types';

export declare function getHierarchyNodes<N>(data: N[], value: NumericAccessor<N>, levels?: string[]): HierarchyNode<ChordHierarchyNode<N>>;
export declare function positionChildren<N>(node: ChordNode<N>, padding: number, scalingCoeff?: number): void;
export declare function getRibbons<N extends ChordInputNode, L extends ChordInputLink>(data: ChordNode<N>, links: ChordLinkDatum<N, L>[], padding: number): ChordRibbon<N, L>[];