From eb3ec1c597c9c01d1c1f63937e4010c1c0b1e9b3 Mon Sep 17 00:00:00 2001
From: Satya van Heummen <satya.vh@gmail.com>
Date: Sat, 14 Oct 2017 21:06:55 +0200
Subject: [PATCH] Make uglify work in Safari 10.0 - fixes #3280

Implement settings as suggested here:
https://github.com/mishoo/UglifyJS2/tree/harmony#mangle-options

To solve this Safari bug:
https://bugs.webkit.org/show_bug.cgi?id=171041
---
 packages/react-scripts/config/webpack.config.prod.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
index 124d5b3cbe..23708af5ae 100644
--- a/packages/react-scripts/config/webpack.config.prod.js
+++ b/packages/react-scripts/config/webpack.config.prod.js
@@ -299,6 +299,9 @@ module.exports = {
         // https://github.com/mishoo/UglifyJS2/issues/2011
         comparisons: false,
       },
+      mangle: {
+        safari10: true,
+      },        
       output: {
         comments: false,
         // Turned on because emoji and regex is not minified properly using default