import type { NodeWithIds } from './types.ts';
export interface HierarchyNode<T = NodeWithIds> {
    data: T;
    children: HierarchyNode<T>[] | null;
    parent: HierarchyNode<T> | null;
    depth: number;
    height: number;
    value?: number;
    x?: number;
    y?: number;
    len?: number;
    _children?: HierarchyNode<T>[] | null;
}
export interface HierarchyLink<T = NodeWithIds> {
    source: HierarchyNode<T>;
    target: HierarchyNode<T>;
}
export declare function hierarchy<T>(data: T, childrenAccessor: (d: T) => T[] | undefined): HierarchyNode<T>;
export declare function sum<T>(node: HierarchyNode<T>, valueFn: (d: T) => number): HierarchyNode<T>;
export declare function sort<T>(node: HierarchyNode<T>, compareFn: (a: HierarchyNode<T>, b: HierarchyNode<T>) => number): HierarchyNode<T>;
export declare function find<T>(node: HierarchyNode<T>, predicate: (n: HierarchyNode<T>) => boolean): HierarchyNode<T> | undefined;
export declare function leaves<T>(node: HierarchyNode<T>): HierarchyNode<T>[];
export declare function descendants<T>(node: HierarchyNode<T>): HierarchyNode<T>[];
export declare function links<T>(node: HierarchyNode<T>): HierarchyLink<T>[];
export declare function clusterLayout<T>(root: HierarchyNode<T>, sizeX: number, sizeY: number): void;
export declare function collapse<T>(node: HierarchyNode<T>): void;
export declare function maxLength(d: HierarchyNode): number;
export declare function setBrLength(d: HierarchyNode, y0: number, k: number): void;