Make SW minification remove comments too

Author: NekR

lib/service-worker.js

@@ -95,6 +95,10 @@ var ServiceWorker = (function () {
             dead_code: true,
             drop_console: true,
             unused: true
+          },
+
+          output: {
+            comments: false
           }
         };
 

src/service-worker.js

@@ -70,6 +70,10 @@ export default class ServiceWorker {
           dead_code: true,
           drop_console: true,
           unused: true
+        },
+
+        output: {
+          comments: false
         }
       };