import type { DatabaseSync } from 'node:sqlite';
/**
 * Run an operation inside a `BEGIN IMMEDIATE` transaction with nested SAVEPOINT
 * support and COMMIT retry on SQLITE_BUSY / SQLITE_LOCKED.
 *
 * When called inside an already-active transaction, automatically uses SAVEPOINT
 * so the outer transaction controls final COMMIT/ROLLBACK. When called at the
 * top level, owns the full transaction lifecycle with retry on contention.
 */
export declare function runSqliteWriteTransaction<T>(fn: (db: DatabaseSync) => T): T;
export declare function getSqliteDatabase(): DatabaseSync;