import type { SankeyLink as D3SankeyLink, SankeyNode as D3SankeyNode } from '../vendor/d3-sankey/index.js';
/** A node in the resolved domain graph model (accessor join output). */
export interface SankeyGraphNode extends Record<string, unknown> {
    id: string;
    /** Resolved from `nodeLabelAccessor`, falling back to the node id. */
    label: string;
    /** Resolved from `columnAccessor`; undefined when topology-inferred. */
    column?: number;
}
/** A directed edge in the resolved domain graph model. */
export interface SankeyGraphLink extends Record<string, unknown> {
    source: string;
    target: string;
    value: number;
}
/** The resolved domain graph model exposed via the data context. */
export interface SankeyGraphModel {
    nodes: SankeyGraphNode[];
    links: SankeyGraphLink[];
}
/**
 * A node after the d3-sankey layout pass: carries the domain fields plus the
 * computed geometry (`x0`/`x1`/`y0`/`y1`, `depth`, `value`, link references).
 */
export type SankeyLayoutNode = D3SankeyNode<SankeyGraphNode, {
    value: number;
}>;
/**
 * A link after the d3-sankey layout pass: `source`/`target` are resolved to
 * node objects and `width`/`y0`/`y1` describe the ribbon geometry.
 */
export type SankeyLayoutLink = D3SankeyLink<SankeyGraphNode, {
    value: number;
}>;
/** The computed layout model exposed via the layout context. */
export interface SankeyLayoutModel {
    nodes: SankeyLayoutNode[];
    links: SankeyLayoutLink[];
}
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