bugfix(microservices) fix client with loader settings

Author: kamilmysliwiec

packages/microservices/client/client-grpc.ts

@@ -1,5 +1,6 @@
 import { Logger } from '@nestjs/common/services/logger.service';
 import { loadPackage } from '@nestjs/common/utils/load-package.util';
+import { isObject } from '@nestjs/common/utils/shared.utils';
 import { Observable } from 'rxjs';
 import { GRPC_DEFAULT_URL } from '../constants';
 import { InvalidGrpcPackageException } from '../exceptions/errors/invalid-grpc-package.exception';
@@ -32,7 +33,10 @@ export class ClientGrpcProxy extends ClientProxy implements ClientGrpc {
   }
 
   public getService<T extends {}>(name: string): T {
-    const options = this.options as any;
+    const options: any = isObject(this.options)
+      ? { ...this.options, loader: '' }
+      : {};
+
     if (!this.grpcClient[name]) {
       throw new InvalidGrpcServiceException();
     }