refactor: code

Author: snitin315

lib/Server.js

@@ -20,14 +20,15 @@ class Server {
   constructor(options = {}, compiler) {
     // TODO: remove this after plugin support is published
 
-    const showDeprecationWarning = util.deprecate(
-      () => {},
-      "Using 'compiler' as the first argument is deprecated. Please use 'options' as the first argument and 'compiler' as the second argument.",
-      "DEP_WEBPACK_DEV_SERVER_API"
-    );
-
     if (options.hooks) {
+      const showDeprecationWarning = util.deprecate(
+        () => {},
+        "Using 'compiler' as the first argument is deprecated. Please use 'options' as the first argument and 'compiler' as the second argument.",
+        "DEP_WEBPACK_DEV_SERVER_API"
+      );
+
       showDeprecationWarning();
+
       [options, compiler] = [compiler, options];
     }