Minify with Uglify

package.json

@@ -9,6 +9,6 @@
     "webpack": "^2.2.0-rc.2"
   },
   "dependencies": {
-    "ol": "^3.21.0-beta.13"
+    "ol": "^3.21.0-beta.14"
   }
 }

webpack.config.js

@@ -1,6 +1,11 @@
+const webpack = require('webpack');
+
 module.exports = {
   entry: './main.js',
   output: {
     filename: 'bundle.js'
-  }
+  },
+  plugins: [
+    new webpack.optimize.UglifyJsPlugin()
+  ]
 };