--- node_modules/@angular/cli/models/webpack-configs/production.js	2017-05-11 12:10:46.000000000 -0700
+++ node_modules/@angular/cli/models/webpack-configs/production.js	2017-05-11 12:10:11.000000000 -0700
@@ -73,6 +73,7 @@
                 'NODE_ENV': 'production'
             }),
             new webpack.HashedModuleIdsPlugin(),
+            new (require("ngo").PurifyPlugin)(),
             new webpack.optimize.UglifyJsPlugin({
                 mangle: { screw_ie8: true },
                 compress: { screw_ie8: true, warnings: buildOptions.verbose },