Added the alias for profiling and output change to keep the className…

…s and functionNames for human readbility

packages/react-scripts/config/webpack.config.js

@@ -240,6 +240,9 @@ module.exports = function(webpackEnv) {
               // Turned on because emoji and regex is not minified properly using default
               // https://github.com/facebook/create-react-app/issues/2488
               ascii_only: true,
+              // Added for profiling in devtools
+              keep_classnames: isEnvProductionProfile,
+              keep_fnames: isEnvProductionProfile,
             },
           },
           // Use multi-process parallel running to improve the build speed
@@ -303,6 +306,10 @@ module.exports = function(webpackEnv) {
         // Support React Native Web
         // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
         'react-native': 'react-native-web',
+        ...(isEnvProductionProfile && {
+          'react-dom$': 'react-dom/profiling',
+          'scheduler/tracing': 'scheduler/tracing-profiling',
+        }),
       },
       plugins: [
         // Adds support for installing with Plug'n'Play, leading to faster installs and adding