From 4a96247bf014905faedffa2baf206d19b246601f Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Mon, 1 Oct 2018 15:07:09 +0100
Subject: [PATCH] Treat .css and .sass/.scss as side effectful (#5197)
---
packages/react-scripts/config/webpack.config.prod.js | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
index a6c6f736f..d71f2979c 100644
--- a/packages/react-scripts/config/webpack.config.prod.js
+++ b/packages/react-scripts/config/webpack.config.prod.js
@@ -370,6 +370,11 @@ module.exports = {
importLoaders: 1,
sourceMap: shouldUseSourceMap,
}),
+ // Don't consider CSS imports dead code even if the
+ // containing package claims to have no side effects.
+ // Remove this when webpack adds a warning or an error for this.
+ // See https://github.com/webpack/webpack/issues/6571
+ sideEffects: true,
},
// Adds support for CSS Modules (https://github.com/css-modules/css-modules)
// using the extension .module.css
@@ -397,6 +402,11 @@ module.exports = {
},
'sass-loader'
),
+ // Don't consider CSS imports dead code even if the
+ // containing package claims to have no side effects.
+ // Remove this when webpack adds a warning or an error for this.
+ // See https://github.com/webpack/webpack/issues/6571
+ sideEffects: true,
},
// Adds support for CSS Modules, but using SASS
// using the extension .module.scss or .module.sass
--
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