Revert "refactor(microservices): Extract AmqpExchangeType"

This reverts commit d8f80ef.

Author: ChangmoKang

packages/microservices/external/rmq-url.interface.ts

@@ -68,10 +68,3 @@ export interface AmqplibQueueOptions {
   maxPriority?: number;
   [key: string]: any;
 }
-
-type AmqpMainExchangeType = 'direct' | 'fanout' | 'topic' | 'headers';
-
-/**
- * @publicApi
- */
-export type AmqpExchangeType = AmqpMainExchangeType | (string & {});

packages/microservices/interfaces/microservice-configuration.interface.ts

@@ -14,7 +14,6 @@ import { MqttClientOptions, QoS } from '../external/mqtt-options.interface';
 import { IORedisOptions } from '../external/redis.interface';
 import {
   AmqpConnectionManagerSocketOptions,
-  AmqpExchangeType,
   AmqplibQueueOptions,
   RmqUrl,
 } from '../external/rmq-url.interface';
@@ -287,7 +286,7 @@ export interface RmqOptions {
      * Type of the exchange
      * @default 'topic'
      */
-    exchangeType?: AmqpExchangeType;
+    exchangeType?: string;
     /**
      * Additional routing key for the topic exchange.
      */