import type { ParsedWorkflow, ParsedNode } from './types.js';
export type NextValue = string | string[] | Record<string, string[]>;
export interface NodeTopology {
    next?: NextValue;
    onError?: string | string[];
    /** nodeId of the (first) predecessor — resolves `$json` references. */
    predecessorNodeId?: string;
    /**
     * All graph-node predecessors, in connection order — the multiple input
     * streams that feed a join node (n8n Merge). `predecessorNodeId` stays the
     * first for `$json` resolution.
     */
    predecessorNodeIds?: string[];
}
export interface Topology {
    /** Main-flow nodes that become graph nodes, in declaration order. */
    graphNodes: ParsedNode[];
    /** Per graph nodeId: next/onError/predecessor. */
    byNodeId: Record<string, NodeTopology>;
    entryNodeIds: string[];
    nameToNodeId: Record<string, string>;
    /**
     * Rewrite map for references that point at a non-graph node. A No Op is a
     * passthrough, so `$node["NoOp"].json.x` must resolve to the No Op's upstream
     * graph-node data source — or the implicit `trigger` input when the No Op is
     * an entry (fed only by triggers/other noops). Values are terminal nodeIds
     * (`'trigger'` or a graph nodeId), so no further resolution is needed.
     */
    refRewrite: Record<string, string>;
}
export declare function buildTopology(parsed: ParsedWorkflow): Topology;