export interface LabelCommandOptions {
    id?: string;
    model?: any;
    data?: any;
    orientation?: string;
    mirror?: boolean;
    upsideDown?: boolean;
    context: any;
    draft?: boolean;
}
export declare function fnv1a(s: string): string;
export declare function cacheKey(opts: LabelCommandOptions): string;
/** 진단 / 운영용 — 현재 cache hit ratio 등 모니터링 가능. */
export declare function getLabelCacheStats(): {
    cacheSize: number;
    inFlight: number;
};
/** Test-only — 캐시 / in-flight state 초기화. */
export declare function _resetLabelState(): void;
export declare function _setBuildOverride(fn: ((opts: LabelCommandOptions) => Promise<string | undefined>) | null): void;
/**
 * 라벨 출력 — ZPL/GRF 문자열 반환.
 *
 * @param {String} id 모델 ID
 * @param {Object} data 매핑할 데이터
 * @param {String} orientation (시계방향) N: 0, R: 90, I: 180, B: 270
 * @param {boolean} mirror 좌우반전
 * @param {boolean} upsideDown 상하반전
 */
export declare const labelcommand: (opts: LabelCommandOptions) => Promise<string | undefined>;