From 52449c34eedc53e50a2a159d38604ea7df5bd997 Mon Sep 17 00:00:00 2001
From: Jack Zhao <jzhao@fb.com>
Date: Sun, 22 Jul 2018 22:22:05 -0700
Subject: [PATCH] Only use safe options when packing CSS assets (#4706)

* support scoped packages for cra --scripts-version option

* enable safe option to cssnano processor

Fixes #4682
---
 packages/react-scripts/config/webpack.config.prod.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
index 4d04909a..86869748 100644
--- a/packages/react-scripts/config/webpack.config.prod.js
+++ b/packages/react-scripts/config/webpack.config.prod.js
@@ -153,7 +153,7 @@ module.exports = {
         cache: true,
         sourceMap: shouldUseSourceMap,
       }),
-      new OptimizeCSSAssetsPlugin(),
+      new OptimizeCSSAssetsPlugin({ cssProcessorOptions: { safe: true } }),
     ],
     // Automatically split vendor and commons
     // https://twitter.com/wSokra/status/969633336732905474