import 'reflect-metadata';
export declare enum Propagation {
    REQUIRED = 0,// Default: join current transaction if present, otherwise create new
    REQUIRES_NEW = 1,// Always create new independent transaction
    NONE = 2
}
/**
 * Decorator to mark a service method for declarative transaction handling.
 * @param propagation Transaction propagation behavior.
 */
export declare function Transaction(propagation?: Propagation): (target: any, propertyKey: string, descriptor?: PropertyDescriptor) => void;