/**
 * refactor.ts — detect duplicated event logic worth consolidating.
 *
 * Copy-pasted command sequences are the most common source of event-logic rot:
 * the same shop/heal/cutscene block lives in five NPCs and they drift apart.
 * This finds identical contiguous command runs shared across events / common
 * events and suggests extracting them into a Common Event (called with command
 * 117), so a fix happens in one place.
 *
 * Read-only analysis (roadmap #9). It proposes; the editor tools act.
 */
import type { RawCommand } from "./eventAst.js";
export interface RefactorSource {
    label: string;
    commands: RawCommand[];
}
export interface DuplicateOccurrence {
    label: string;
    startIndex: number;
}
export interface DuplicateBlock {
    length: number;
    occurrences: DuplicateOccurrence[];
    /** Command codes of the shared run, for a quick eyeball. */
    codes: number[];
    suggestion: string;
}
export interface RefactorReport {
    blockCount: number;
    duplicateBlocks: DuplicateBlock[];
}
/**
 * Find identical command runs of at least `minLen` shared by 2+ locations.
 * Reports each maximal run once with all the places it appears.
 */
export declare function detectDuplicates(sources: RefactorSource[], minLen?: number, maxResults?: number): RefactorReport;