From 028b76fb9a43070fe26cc83aa8622cd51bdb5079 Mon Sep 17 00:00:00 2001
From: caoyangqin <caoyangqin0607@163.com>
Date: Thu, 6 Dec 2018 17:47:56 +0800
Subject: [PATCH] add callback function as parameter of invalidate

---
 lib/Server.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/Server.js b/lib/Server.js
index 0030fa560d..536373bdde 100644
--- a/lib/Server.js
+++ b/lib/Server.js
@@ -883,9 +883,9 @@ Server.prototype._watch = function (watchPath) {
   this.contentBaseWatchers.push(watcher);
 };
 
-Server.prototype.invalidate = function () {
+Server.prototype.invalidate = function (callback) {
   if (this.middleware) {
-    this.middleware.invalidate();
+    this.middleware.invalidate(callback);
   }
 };