diff --git a/dist/index.d.ts b/dist/index.d.ts
index 8ddfa7a..6443445 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -1,5 +1,7 @@
 /// <reference types="q" />
+/// <reference types="node" />
 import * as plugins from './smartstream.plugins';
+import { Transform } from 'stream';
 export interface IErrorFunction {
     (err: any): any;
 }
@@ -35,4 +37,4 @@ export declare class Smartstream {
      */
     run(): plugins.q.Promise<void>;
 }
-export declare let cleanPipe: () => void;
+export declare let cleanPipe: () => Transform;
diff --git a/dist/index.js b/dist/index.js
index 76a75a7..ec5d9fe 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -73,10 +73,10 @@ class Smartstream {
 }
 exports.Smartstream = Smartstream;
 exports.cleanPipe = () => {
-    plugins.through2.obj((file, enc, cb) => {
+    return plugins.through2.obj((file, enc, cb) => {
         cb();
     }, (cb) => {
         cb();
     });
 };
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\ No newline at end of file
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\ No newline at end of file
diff --git a/ts/index.ts b/ts/index.ts
index ab55f14..ab51fe6 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1,5 +1,9 @@
 import * as plugins from './smartstream.plugins'
 
+// interfaces 
+import { Transform } from 'stream'
+
+
 export interface IErrorFunction {
   (err): any
 }
@@ -91,7 +95,7 @@ export class Smartstream {
 }
 
 export let cleanPipe = () => {
-  plugins.through2.obj(
+  return plugins.through2.obj(
     (file, enc, cb) => {
       cb()
     },