import type { OntologySnapshot, OntologyDiff } from "./types.js";
/**
 * Compare two ontology snapshots and generate a diff.
 * @param oldOntology - The previous ontology (from lockfile), or null if first run
 * @param newOntology - The current ontology (from config)
 */
export declare function diffOntology(oldOntology: OntologySnapshot | null, newOntology: OntologySnapshot): OntologyDiff;
/**
 * Format a diff for console output
 */
export declare function formatDiffForConsole(diff: OntologyDiff): string;