fix: problem when controller file is empty

Author: Lucas Mendes Loureiro

README.md

@@ -102,9 +102,9 @@ Before putting the application to run, it is necessary to re-bind the controller
 
 ```js
 
-const express         = require('express')
-const cors            = require('cors')
-const useControllers  = require('express-decorator-router/register')
+const express             = require('express')
+const cors                = require('cors')
+const { useControllers }  = require('express-decorator-router')
 
 const app             = express()
 const router          = express.Router()

package.json

@@ -1,7 +1,7 @@
 {
   "private": false,
   "name": "express-decorator-router",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "use decorators in a simple way without transpiling javascript code",
   "main": "src/index.js",
   "scripts": {

src/register.js

@@ -18,9 +18,9 @@ const isPromise = obj => !!obj && (isObject(obj) || isFunction(obj)) && isFuncti
  * @returns This method returns a configured router object
  * @example
  *
- * const express          = require('express')
- * const cors             = require('cors')
- * const useControllers   = require('express-decorator-router/register')
+ * const express              = require('express')
+ * const cors                 = require('cors')
+ * const { useControllers }   = require('express-decorator-router')
  *
  * const app              = express()
  * const router           = express.Router()
@@ -59,7 +59,8 @@ module.exports = function useControllers (configuration = {}) {
 			? new ApplicationController()
 			: ApplicationController
 
-		return instance.$routes.reduce((server, {
+		const routes = instance.$routes || []
+		return routes.reduce((server, {
 			httpMethod,
 			endpointFn,
 			actionPath,