refactor: code

Author: snitin315

lib/Server.js

@@ -755,11 +755,8 @@ class Server {
     }
   }
 
-  listen(port, hostname = this.options.host, fn) {
-    if (
-      typeof this.options.host !== 'undefined' &&
-      hostname !== this.options.host
-    ) {
+  listen(port, hostname, fn) {
+    if (typeof hostname !== 'undefined' && hostname !== this.options.host) {
       throw new Error(
         'The host specified in options is different from the host passed as an argument.'
       );
@@ -771,6 +768,8 @@ class Server {
       );
     }
 
+    hostname = this.options.host;
+
     if (hostname === 'local-ip') {
       this.options.host =
         internalIp.v4.sync() || internalIp.v6.sync() || '0.0.0.0';

test/server/Server.test.js

@@ -12,6 +12,7 @@ jest.mock('sockjs/lib/transport');
 
 const baseDevConfig = {
   port,
+  host: 'localhost',
   static: false,
 };