Remove UglifyJS and explicitely opt-out from it

Uglify ES is to AVOID for all our projects. this create very sneaky bugs with React.

package.json

@@ -32,7 +32,6 @@
     }
   },
   "resolutions": {
-    "uglify-es": "3.3.7",
     "webpack-sources": "1.0.1"
   },
   "dependencies": {
@@ -157,7 +156,6 @@
     "prettier": "^1.13.5",
     "react-hot-loader": "^4.3.2",
     "react-test-renderer": "^16.4.1",
-    "uglifyjs-webpack-plugin": "^1.2.6",
     "webpack": "^4.6.0",
     "webpack-bundle-analyzer": "^2.11.1",
     "webpack-cli": "^2.0.14",

webpack/renderer.config.js

@@ -1,29 +1,9 @@
 const HardSourceWebpackPlugin = require('hard-source-webpack-plugin')
-const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
 
 const plugins = require('./plugins')
 const resolve = require('./resolve')
 const rules = require('./rules')
 
-const getOptimization = env => {
-  const optimization = {
-    minimizer: [
-      // Default Config without mangling
-      new UglifyJsPlugin({
-        parallel: true,
-        sourceMap: true,
-        uglifyOptions: {
-          mangle: false,
-          compress: {
-            ecma: 7,
-          },
-        },
-      }),
-    ],
-  }
-  return env === 'production' ? optimization : undefined
-}
-
 const config = {
   mode: __ENV__,
   plugins: [...plugins('renderer'), new HardSourceWebpackPlugin()],
@@ -35,7 +15,7 @@ const config = {
     historyApiFallback: true,
   },
   optimization: {
-    ...getOptimization(__ENV__),
+    minimizer: [],
   },
 }