hidden source map

Author: mofelee

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

@@ -62,7 +62,7 @@ module.exports = {
   bail: true,
   // We generate sourcemaps in production. This is slow but gives good results.
   // You can exclude the *.map files from the build during deployment.
-  devtool: 'source-map',
+  devtool: 'hidden-source-map',
   // In production, we only want to load the polyfills and the app code.
   entry: [
     require.resolve('./polyfills'),