FIX: better compatibility.

package.json

@@ -5,7 +5,7 @@
   "main": "public/index.html",
   "scripts": {
     "postinstall": "node build.js",
-    "build":"rollup public/worker.js --format iife --file public/generated.worker.js",
+    "build":"rollup public/worker.js --format iife --file public/generated.worker.js && rollup public/main.js --format iife --file public/generated.main.js",
     "test": "echo open public/test.html in your browser"
   },
   "repository": {

public/index.html

@@ -86,6 +86,6 @@ space::[ _-.]{0,1}
         </style>
     </a>
 </footer>
-<script type="module" src="main.js"></script>
+<script type="module" src="generated.main.js"></script>
 </body>
 </html>