From d4f1237c4b45d4d33db9cca8259d0b6a4ecef619 Mon Sep 17 00:00:00 2001
From: Jonny Buchanan <jonathan.buchanan@gmail.com>
Date: Mon, 18 Jul 2016 04:59:42 +1000
Subject: [PATCH 1/2] Strip comments from the production build

---
 webpack.config.prod.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/webpack.config.prod.js b/webpack.config.prod.js
index 3461ab9fa22..f2e08419d4f 100644
--- a/webpack.config.prod.js
+++ b/webpack.config.prod.js
@@ -91,6 +91,9 @@ module.exports = {
     }),
     new webpack.DefinePlugin({ 'process.env.NODE_ENV': '"production"' }),
     new webpack.optimize.OccurrenceOrderPlugin(),
-    new webpack.optimize.UglifyJsPlugin({ compressor: { warnings: false } })
+    new webpack.optimize.UglifyJsPlugin({
+      compressor: { warnings: false },
+      output: { comments: false }
+    })
   ]
 };

From 0a25b628b9b9d6f0a75a760b7cad40b0a3b5d664 Mon Sep 17 00:00:00 2001
From: Jonny Buchanan <jonathan.buchanan@gmail.com>
Date: Mon, 18 Jul 2016 05:40:52 +1000
Subject: [PATCH 2/2] Add screw_ie8 options to UglifyJsPlugin

---
 webpack.config.prod.js | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/webpack.config.prod.js b/webpack.config.prod.js
index f2e08419d4f..85fa5bdce25 100644
--- a/webpack.config.prod.js
+++ b/webpack.config.prod.js
@@ -92,8 +92,17 @@ module.exports = {
     new webpack.DefinePlugin({ 'process.env.NODE_ENV': '"production"' }),
     new webpack.optimize.OccurrenceOrderPlugin(),
     new webpack.optimize.UglifyJsPlugin({
-      compressor: { warnings: false },
-      output: { comments: false }
+      compressor: {
+        screw_ie8: true,
+        warnings: false
+      },
+      mangle: {
+        screw_ie8: true
+      },
+      output: {
+        comments: false,
+        screw_ie8: true
+      }
     })
   ]
 };