webpack.config.js in jot-ruby-js-0.1.3 vs webpack.config.js in jot-ruby-js-0.1.4

@@ -1,11 +1,23 @@
-var webpack = require("webpack");
-var path = require("path");
+const webpack = require("webpack");
+const path = require("path");
+const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
 
 module.exports = {
   output: {
     path: path.resolve(__dirname, 'vendor'),
     filename: 'jot.js'
+  },
+  optimization: {
+    minimizer: [
+      new UglifyJsPlugin({
+        uglifyOptions: {
+          output: {
+            comments: false
+          }
+        }
+      })
+    ]
   },
   entry:  path.resolve(__dirname, 'jot/browser_example/browserfy_root'),
   mode: 'production'
 }