fix: make getter properties enumerable

src/modules/Request.js

@@ -2,28 +2,31 @@
  *@module Request
 */
 
-import Util from './Util';
 import {IncomingMessage as Request} from 'http';
 
-const proto = Request.prototype;
+Object.defineProperties(Request.prototype, {
+    /**
+     *@type {boolean}
+     *@memberof Request#
+    */
+    isHttps: {
+        configurable: true,
+        get() {
+            return this.connection.encrypted;
+        }
+    },
 
-/**
- *@type {boolean}
- *@name isHttps
- *@memberof Request#
-*/
-Util.defineGetter(proto, 'isHttps', function() {
-    return this.connection.encrypted;
-});
-
-/**
- *@type {string}
- *@name hostname
- *@memberof Request#
-*/
-Util.defineGetter(proto, 'hostname', function() {
-    const host = this.headers['host'];
-    return typeof host === 'string'? host.replace(/:\d+$/, '') : '';
+    /**
+     *@type {string}
+     *@memberof Request#
+    */
+    hostname: {
+        configurable: true,
+        get() {
+            const host = this.headers['host'];
+            return typeof host === 'string'? host.replace(/:\d+$/, '') : '';
+        }
+    }
 });
 
 export default Request;