diff --git a/index.js b/index.js
index 15ff550..24558a0 100644
--- a/index.js
+++ b/index.js
@@ -1 +1,5 @@
-console.log('I am Tieu Phong')
\ No newline at end of file
+const whoami = () => {
+    console.log('I am Tieu Phong')
+}
+
+module.exports = {whoami};
\ No newline at end of file
diff --git a/package.json b/package.json
index d9b1333..79eab05 100644
--- a/package.json
+++ b/package.json
@@ -1,10 +1,11 @@
 {
   "name": "@lytieuphong/whoami",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "Tell you who am I",
   "main": "index.js",
   "scripts": {
-    "test": "exit 0"
+    "test": "exit 0",
+    "build": "exit 0"
   },
   "repository": {
     "type": "git",