From 26b30b5f28525ea7c56c1b2f786d9eaa74dfd1b0 Mon Sep 17 00:00:00 2001
From: Josh Birdwell <jbirdwell34@gmail.com>
Date: Wed, 6 Dec 2017 17:54:41 -0600
Subject: [PATCH] fixes #1217: edge case with default watchOptions value

There is a problem when watchOptions is set to undefined in the options object. this.watchOptions is then set to undefined. We want an empty object so we can check poll property later.
---
 lib/Server.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Server.js b/lib/Server.js
index 7a73c1ca20..f0f21630ab 100644
--- a/lib/Server.js
+++ b/lib/Server.js
@@ -50,7 +50,7 @@ function Server(compiler, options) {
   this.allowedHosts = options.allowedHosts;
   this.sockets = [];
   this.contentBaseWatchers = [];
-  this.watchOptions = options.watchOptions;
+  this.watchOptions = options.watchOptions || {};
 
   // Listening for events
   const invalidPlugin = () => {