From 15e74e59ce6c517d1457d3fb60a70d36de4a9590 Mon Sep 17 00:00:00 2001
From: George Schneeloch <gschneel@mit.edu>
Date: Tue, 1 Aug 2017 16:05:34 -0400
Subject: [PATCH] Fix CORS issue with hot reloading (#3446)

---
 hot-reload-dev-server.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hot-reload-dev-server.js b/hot-reload-dev-server.js
index 571f0125a3..06612ad943 100644
--- a/hot-reload-dev-server.js
+++ b/hot-reload-dev-server.js
@@ -15,6 +15,11 @@ const app = express();
 
 const compiler = webpack(config);
 
+app.use(function(req, res, next) {
+ res.header('Access-Control-Allow-Origin', '*');
+ next();
+});
+
 app.use(devMiddleware(compiler, {
   publicPath: "/"
 }));