import { ExternalContextCreator } from '@nestjs/core/helpers/external-context-creator';
import { InstanceWrapper } from '@nestjs/core/injector/instance-wrapper';
import { Module } from '@nestjs/core/injector/module';
import { ModulesContainer } from '@nestjs/core/injector/modules-container';
import { MetadataScanner } from '@nestjs/core/metadata-scanner';
import { GqlModuleOptions, SubscriptionOptions } from '..';
import { ResolverMetadata } from '../interfaces/resolver-metadata.interface';
import { BaseExplorerService } from './base-explorer.service';
export declare class ResolversExplorerService extends BaseExplorerService {
    private readonly modulesContainer;
    private readonly metadataScanner;
    private readonly externalContextCreator;
    private readonly gqlOptions;
    private readonly gqlParamsFactory;
    private readonly injector;
    constructor(modulesContainer: ModulesContainer, metadataScanner: MetadataScanner, externalContextCreator: ExternalContextCreator, gqlOptions: GqlModuleOptions);
    explore(): any;
    filterResolvers(wrapper: InstanceWrapper, moduleRef: Module): ResolverMetadata[];
    createContextCallback<T extends Record<string, any>>(instance: T, prototype: any, wrapper: InstanceWrapper, moduleRef: Module, resolver: ResolverMetadata, isRequestScoped: boolean, transform?: Function): Function;
    createSubscriptionMetadata(createSubscribeContext: Function, subscriptionOptions: SubscriptionOptions, resolverMetadata: ResolverMetadata, instanceRef: Record<string, any>): {
        callback: {
            subscribe: any;
            resolve: any;
        };
        name: string;
        type: string;
        methodName: string;
    };
    getAllCtors(): Function[];
    private registerContextProvider;
    private registerFieldMiddlewareIfExists;
}