--- node_modules/@angular/cli/models/webpack-configs/production.js	2017-05-24 15:36:43.000000000 -0700
+++ node_modules/@angular/cli/models/webpack-configs/production.js	2017-05-24 15:37:04.000000000 -0700
@@ -82,7 +82,7 @@
             new (require("purify/purify-webpack-plugin"))(),
             new webpack.optimize.UglifyJsPlugin({
                 mangle: { screw_ie8: true },
-                compress: { screw_ie8: true, warnings: buildOptions.verbose },
+                compress: { screw_ie8: true, warnings: buildOptions.verbose, pure_getters: true },
                 sourceMap: buildOptions.sourcemaps,
                 comments: false
             })
