/**
 * Bipartite layout algorithm
 */
import { Graph, Node, PositionMap } from "../../types";
/**
 * Position nodes in two straight lines (bipartite layout).
 * @param G - Graph or list of nodes
 * @param nodes - Nodes in one node set of the graph
 * @param align - The alignment of nodes: 'vertical' or 'horizontal'
 * @param scale - Scale factor for positions
 * @param center - Coordinate pair around which to center the layout
 * @param aspectRatio - The ratio of the width to the height of the layout
 * @returns Positions dictionary keyed by node
 */
export declare function bipartiteLayout(G: Graph, nodes?: Node[] | null, align?: "vertical" | "horizontal", scale?: number, center?: number[] | null, aspectRatio?: number): PositionMap;
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