import type { Type } from '@nestjs/common';
/**
 * Utility class for Opra-NestJS integration.
 */
export declare class OpraNestUtils {
    /**
     * Copies Opra-related decorator metadata from source classes to a target class.
     * Also merges NestJS guards, interceptors, and exception filters.
     *
     * @param target - The target class to receive the metadata.
     * @param source - The source classes to copy metadata from.
     */
    static copyDecoratorMetadata(target: Type, ...source: Type[]): void;
}