import { OnModuleInit } from '@nestjs/common';
import { DiscoveryService } from '@nestjs/core';
import { MiddlewareClass } from '../decorators/middleware.decorators';
import { JobMiddleware } from '../interfaces/module-config.interfaces';
import { MetadataAccessorService } from './metadata-accessor.service';
/**
 * Service responsible for discovering and registering middleware classes
 */
export declare class MiddlewareExplorerService implements OnModuleInit {
    private readonly discoveryService;
    private readonly metadataAccessor;
    private readonly logger;
    private readonly _middlewares;
    private _explored;
    constructor(discoveryService: DiscoveryService, metadataAccessor: MetadataAccessorService);
    onModuleInit(): void;
    /**
     * Get all global middleware classes
     */
    get globalMiddlewareClasses(): MiddlewareClass[];
    /**
     * Get multiple middlewares by their classes
     * @throws Error if any middleware class is not found
     */
    getMiddlewaresByClasses(middlewareClasses: MiddlewareClass[]): JobMiddleware[];
    private explore;
    private isValidMiddleware;
    /**
     * Get the JobMiddleware function from a MiddlewareProvider instance
     */
    private getMiddlewareFunction;
    private logMiddlewareRegistration;
}