/**
 * MongoDB collection names and index definitions.
 *
 * Call `createIndexes(db)` once during application startup to ensure all
 * required indexes exist. The function is idempotent — MongoDB silently
 * skips indexes that already exist.
 */
import type { Db } from "mongodb";
export declare const COLLECTIONS: {
    readonly META: "build_meta";
    readonly DOCS: "build_docs";
    readonly FLOWS: "build_flows";
    readonly ATTRIBUTES: "build_attributes";
    readonly VALIDATIONS: "build_validations";
    readonly CHANGELOG: "build_changelog";
};
export type CollectionName = (typeof COLLECTIONS)[keyof typeof COLLECTIONS];
/**
 * Creates all required indexes across build collections.
 *
 * - Unique compound indexes on `domain + version` (or `domain + version + key`)
 *   guarantee at most one document per build per entity.
 * - Secondary indexes support common query patterns (docs by order, flows by
 *   usecase/tags, changelogs by date).
 */
export declare function createIndexes(db: Db): Promise<void>;
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