import type { CatalogId } from "@x12i/catalox-contracts/ids.js";
import type { Firestore } from "firebase-admin/firestore";
export { nativeItemsCollectionId } from "../catalog-data-paths.js";
export type NativeItemsLayout = "legacy" | "flat";
/**
 * Prefer the flat layout when it already has data (post-migration).
 * Otherwise use legacy `catalogData/{catalogId}/items` when it has data.
 * If both are empty, default to flat for new writes.
 * @deprecated Firestore layout resolution — Catalox is Mongo-primary; kept for migration tooling.
 */
export declare function resolveNativeItemsLayout(firestore: Firestore, catalogId: CatalogId): Promise<NativeItemsLayout>;
/** @deprecated Firestore-only — kept for migration tooling. */
export declare function legacyNativeItemsCollectionRef(firestore: Firestore, catalogId: CatalogId): FirebaseFirestore.CollectionReference<FirebaseFirestore.DocumentData, FirebaseFirestore.DocumentData>;
/** @deprecated Firestore-only — kept for migration tooling. */
export declare function flatNativeItemsCollectionRef(firestore: Firestore, catalogId: CatalogId): FirebaseFirestore.CollectionReference<FirebaseFirestore.DocumentData, FirebaseFirestore.DocumentData>;
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