Where we import module.exports don't work.

src/mixins/ServiceWorkerMixin.js

@@ -92,4 +92,4 @@ var serviceWorkerRegistrationMixin = {
   }
 };
 
-module.exports = serviceWorkerRegistrationMixin;
+export default serviceWorkerRegistrationMixin;

src/utils.js

@@ -20,7 +20,7 @@ function daysAgo(date) {
   return Math.round(Math.abs((new Date() - new Date(date)) / day));
 }
 
-module.exports = {
+export {
   dateString,
   humanReadableDate,
   daysAgo