declare const MIGRATION_LOCK_KEY = 42424242;
type LockableDatabase = {
    unsafe<T>(query: string, params?: readonly unknown[]): Promise<T[]>;
};
declare function withMigrationLock<T>(db: LockableDatabase, callback: () => Promise<T>, lockKey?: number): Promise<T>;
export { MIGRATION_LOCK_KEY, withMigrationLock };