import type { ArgumentMetadata, ContextType, PipeTransform } from '@nestjs/common';
import { type Controller } from '@nestjs/common/internal';
import type { ApplicationConfig } from '@nestjs/core';
import { ExecutionContextHost, type GuardsConsumer, type GuardsContextCreator, type InterceptorsConsumer, type InterceptorsContextCreator, type ParamProperties, type ParamsMetadata, type PipesConsumer, type PipesContextCreator } from '@nestjs/core/internal';
import { Observable } from 'rxjs';
import { RpcParamsFactory } from '../factories/rpc-params-factory.js';
import { ExceptionFiltersContext } from './exception-filters-context.js';
import { RpcProxy } from './rpc-proxy.js';
/**
 * Returns a notifier that emits once the handler called with `context` has
 * returned (or resolved to) an Observable. Returns `undefined` when the
 * result of the handler is not wrapped by interceptors or pre-request hooks,
 * which leaves the caller to look at it directly.
 */
export declare function getHandlerObservableNotifier(context: unknown): Observable<void> | undefined;
type RpcParamProperties = ParamProperties & {
    metatype?: any;
};
export interface RpcHandlerMetadata {
    argsLength: number;
    paramtypes: any[];
    getParamsMetadata: (moduleKey: string) => RpcParamProperties[];
}
export declare class RpcContextCreator {
    private readonly rpcProxy;
    private readonly exceptionFiltersContext;
    private readonly pipesContextCreator;
    private readonly pipesConsumer;
    private readonly guardsContextCreator;
    private readonly guardsConsumer;
    private readonly interceptorsContextCreator;
    private readonly interceptorsConsumer;
    private readonly applicationConfig?;
    private readonly contextUtils;
    private readonly rpcParamsFactory;
    private readonly handlerMetadataStorage;
    constructor(rpcProxy: RpcProxy, exceptionFiltersContext: ExceptionFiltersContext, pipesContextCreator: PipesContextCreator, pipesConsumer: PipesConsumer, guardsContextCreator: GuardsContextCreator, guardsConsumer: GuardsConsumer, interceptorsContextCreator: InterceptorsContextCreator, interceptorsConsumer: InterceptorsConsumer, applicationConfig?: ApplicationConfig | undefined);
    create<T extends ParamsMetadata = ParamsMetadata>(instance: Controller, callback: (...args: unknown[]) => Observable<any>, moduleKey: string, methodName: string, contextId?: import("@nestjs/core").ContextId, inquirerId?: string, defaultCallMetadata?: Record<string, any>, reportUnhandledErrors?: boolean): (...args: any[]) => Promise<Observable<any>>;
    reflectCallbackParamtypes(instance: Controller, callback: (...args: unknown[]) => unknown): unknown[];
    createGuardsFn<TContext extends string = ContextType>(guards: any[], instance: Controller, callback: (...args: unknown[]) => unknown, contextType?: TContext): Function | null;
    getMetadata<TMetadata, TContext extends ContextType = ContextType>(instance: Controller, methodName: string, defaultCallMetadata: Record<string, any>, contextType: TContext): RpcHandlerMetadata;
    exchangeKeysForValues<TMetadata = any>(keys: string[], metadata: TMetadata, moduleContext: string, paramsFactory: RpcParamsFactory, contextFactory: (args: unknown[]) => ExecutionContextHost): ParamProperties[];
    createPipesFn(pipes: PipeTransform[], paramsOptions: (ParamProperties & {
        metatype?: unknown;
    })[]): ((args: unknown[], ...params: unknown[]) => Promise<void>) | null;
    getParamValue<T>(value: T, metadata: ArgumentMetadata, pipes: PipeTransform[]): Promise<any>;
    /**
     * Returns the notifier of the context, which all the handlers called with
     * it share (e.g. the event handlers of one pattern).
     */
    private attachHandlerObservableNotifier;
    private notifyIfObservable;
}
export {};