import { RpcResponse, RpcRequest, RpcMethod } from '../interfaces';
import { Observable } from 'rxjs';
export declare type RpcRequestHandler = <P extends RpcRequest, Type extends P['method']>(payload: P) => Observable<Extract<RpcMethod, {
    type: Type;
}>['response']>;
export declare type MiddlewareItem = (payload: RpcRequest, next: RpcRequestHandler) => Observable<RpcResponse>;