import type { ChartData } from '../../core/types/chart-data.js';
import type { SankeyGraphModel } from '../types/sankey-internal.js';
interface BuildSankeyGraphParams {
    data: ChartData;
    sourceAccessor: string;
    targetAccessor: string;
    valueAccessor: string;
    nodes?: ChartData;
    nodeIdAccessor?: string;
    nodeLabelAccessor?: string;
    columnAccessor?: string;
}
/**
 * Resolves the link rows and optional node metadata into the domain graph
 * model. Link endpoints are collected in a single pass over `data`; node
 * metadata is only indexed from `nodes` afterwards, so the (typically much
 * smaller) `nodes` array is never re-scanned per link.
 */
export declare const buildSankeyGraph: ({ data, sourceAccessor, targetAccessor, valueAccessor, nodes, nodeIdAccessor, nodeLabelAccessor, columnAccessor, }: BuildSankeyGraphParams) => SankeyGraphModel;
export {};
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