diff --git a/index.js b/index.js
index d5556f1..3e0e211 100644
--- a/index.js
+++ b/index.js
@@ -5,7 +5,7 @@ const SerializerManager = require('./SerializerManager')
 
 const FASTIFY_DEFAULT_SERIALIZE_MIME_TYPE = 'application/json'
 
-function acceptsSerializerPlugin (fastify, options, next) {
+function fastifyAcceptsSerializer (fastify, options, next) {
   const serializerCache = {}
   options.cache = serializerCache
 
@@ -64,7 +64,9 @@ function acceptsSerializerPlugin (fastify, options, next) {
   next()
 }
 
-module.exports = fp(acceptsSerializerPlugin, {
+module.exports = fp(fastifyAcceptsSerializer, {
   fastify: '4.x',
   name: '@fastify/accepts-serializer'
 })
+module.exports.default = fastifyAcceptsSerializer
+module.exports.fastifyAcceptsSerializer = fastifyAcceptsSerializer
diff --git a/types/index.d.ts b/types/index.d.ts
index 020e11c..cba5be1 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -2,20 +2,26 @@ import { FastifyPluginCallback } from 'fastify';
 
 declare module 'fastify' {
   export interface FastifyContextConfig {
-    serializers: SerializerConfig[];
+    serializers: fastifyAcceptsSerializer.SerializerConfig[];
   }
 }
 
-interface SerializerConfig {
-  regex: RegExp;
-  serializer: (body: any) => string;
-}
+type FastifyAcceptsSerializer = FastifyPluginCallback<fastifyAcceptsSerializer.FastifyAcceptsSerializerPluginOptions>;
 
-interface FastifyAcceptsSerializerPluginOptions {
-  serializers: SerializerConfig[];
-  default: string;
-}
+declare namespace fastifyAcceptsSerializer {
+  export interface SerializerConfig {
+    regex: RegExp;
+    serializer: (body: any) => string;
+  }
+  
+  export interface FastifyAcceptsSerializerPluginOptions {
+    serializers: SerializerConfig[];
+    default: string;
+  }
 
-declare const fastifyAcceptsSerializer: FastifyPluginCallback<FastifyAcceptsSerializerPluginOptions>;
+  export const fastifyAcceptsSerializer: FastifyAcceptsSerializer
+  export { fastifyAcceptsSerializer as default }
+}
 
-export default fastifyAcceptsSerializer;
+declare function fastifyAcceptsSerializer(...params: Parameters<FastifyAcceptsSerializer>): ReturnType<FastifyAcceptsSerializer>
+export = fastifyAcceptsSerializer