/**
 * Diff engine: compares two .bug artifacts and produces a structured diff report.
 */
import { ArtifactManifest } from '../types/artifact.js';
import { FailureRecord } from '../types/failure.js';
import { FileEntry } from '../capture/packager.js';
interface DiffChange {
    field: string;
    left: unknown;
    right: unknown;
}
interface FileChanges {
    added: string[];
    removed: string[];
    modified: string[];
}
export interface DiffResult {
    identical: boolean;
    changes: DiffChange[];
    fileChanges?: FileChanges;
}
export interface ArtifactSnapshot {
    manifest: ArtifactManifest;
    failure: FailureRecord;
    files: FileEntry[];
}
export declare function diffArtifacts(left: ArtifactSnapshot, right: ArtifactSnapshot): DiffResult;
export {};
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