Disable comparisons feature in uglify compression in production (face…

…book#2379) * Disable a micro-option in uglify that appears to be buggy See facebook#2376 * wrong plugin * Add a comment
romaindso · Jul 10, 2017 · f4d31b8 · f4d31b8
1 parent c86ffb6
commit f4d31b8
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
@@ -282,6 +282,11 @@ module.exports = {
     new webpack.optimize.UglifyJsPlugin({
       compress: {
         warnings: false,
+        // Disabled because of an issue with Uglify breaking seemingly valid code:
+        // https://github.com/facebookincubator/create-react-app/issues/2376
+        // Pending further investigation:
+        // https://github.com/mishoo/UglifyJS2/issues/2011
+        comparisons: false,
       },
       output: {
         comments: false,