import { Node, Parent } from "unist";
type Link = {
    source: string;
    target: string;
    value: string;
};
type ForceData = {
    nodes: Node[];
    links: Link[];
};
/**
 * Transforms a GEDCOM AST - likely produced using
 * `parse` - into a data structure suited for
 * a [D3 force directed graph](https://observablehq.com/@d3/force-directed-graph)
 * layout.
 *
 * @param root - Parsed GEDCOM content
 * @returns D3-friendly JSON
 */
export declare function toD3Force(root: Parent): ForceData;
export {};