export interface ExportNode {
    /** Stable node id. For file-level graphs, use the file path. */
    id: string;
    /** Optional display label; falls back to `id`. */
    label?: string;
    /** Optional extra attributes; GraphML emits as `<data>` keys. */
    attributes?: Record<string, string | number | boolean>;
}
export interface ExportEdge {
    from: string;
    to: string;
    /** Optional edge weight; default 1. */
    weight?: number;
    /** Optional extra attributes. */
    attributes?: Record<string, string | number | boolean>;
}
export interface ExportGraph {
    nodes: ExportNode[];
    edges: ExportEdge[];
}
/**
 * Emits a standards-compliant GraphML document. Attribute keys are
 * auto-declared from the union of `attributes` seen on nodes and edges.
 */
export declare function toGraphML(graph: ExportGraph): string;
/**
 * Emits a Mermaid `flowchart LR` block. Ids are sanitised for Mermaid's
 * identifier grammar; original ids are preserved as node labels.
 */
export declare function toMermaid(graph: ExportGraph, opts?: {
    direction?: 'LR' | 'TD';
}): string;
/**
 * Emits a Cypher script that creates every node + edge in the graph.
 * Node labels default to `File`; edge relationship type to `IMPORTS`.
 * Both can be overridden via `opts`.
 */
export declare function toCypher(graph: ExportGraph, opts?: {
    nodeLabel?: string;
    relationshipType?: string;
}): string;
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