fix: improve types

import {

  ClientProvider,

  ClientsModuleOptionsFactory,

} from '@nestjs/microservices';

import { ClientsModuleOptionsFactory } from '@nestjs/microservices';

import { CustomClientOptions } from '@nestjs/microservices/interfaces';

import { ClientRMQExchange } from './client-rmq-exchange';

import { ExchangeRmqOptions } from './options';

import { RabbitmqOptionsFactory } from './rabbitmq-options-factory';

export interface ClientRmqExchangeModuleOptions extends CustomClientOptions {

  options: ExchangeRmqOptions

}

export class ClientRmqExchangeModuleOptionsFactory extends RabbitmqOptionsFactory implements ClientsModuleOptionsFactory {

  async createClientOptions(exchange: string = this.config.getOrThrow('RABBITMQ_EXCHANGE')): Promise<ClientProvider> {

  async createClientOptions(exchange: string = this.config.getOrThrow('RABBITMQ_EXCHANGE')): Promise<ClientRmqExchangeModuleOptions> {

    const options = await this.build();