import Database from 'better-sqlite3';
export declare function getDb(): Database.Database;
export declare function closeDb(): void;
/** Test-only: reset the cached db handle (forces next getDb() to reopen). */
export declare function resetDbHandle(): void;
/**
 * Returns whether sqlite-vec is functional on this db handle. Callers that
 * need vectors should check this before building vector queries.
 */
export declare function hasVectorSupport(db: Database.Database): boolean;