From fd2a800f768ee011d6d21bad38ce228ddfb9f70c Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Wed, 17 May 2017 23:24:07 +0100
Subject: [PATCH] Disable Uglify reduce_vars (#2200)
---
packages/react-scripts/config/webpack.config.prod.js | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
index 96cc32f94..ac672a409 100644
--- a/packages/react-scripts/config/webpack.config.prod.js
+++ b/packages/react-scripts/config/webpack.config.prod.js
@@ -280,6 +280,10 @@ module.exports = {
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false,
+ // This feature has been reported as buggy a few times, such as:
+ // https://github.com/mishoo/UglifyJS2/issues/1964
+ // We'll wait with enabling it by default until it is more solid.
+ reduce_vars: false,
},
output: {
comments: false,
--
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