import type { ExistingOutput, ProposedOutput, TopologyDiff } from '@forgeax/engine-types';
/**
 * Match importer output declarations without treating sourceIndex or array
 * position as identity. A stable producer sourceKey preserves the prior GUID;
 * multi-output declarations without one are explicitly ambiguous.
 */
export declare function diffTopology(previous: readonly ExistingOutput[], next: readonly ProposedOutput[]): TopologyDiff;
export declare const calculateTopologyDiff: typeof diffTopology;
/** Alias named after the producer-facing contract wording. */
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