chore: add circle

build/service-worker-dev.js

@@ -0,0 +1,17 @@
+// This service worker file is effectively a 'no-op' that will reset any
+// previous service worker registered for the same host:port combination.
+// In the production build, this file is replaced with an actual service worker
+// file that will precache your site's local assets.
+// See https://github.com/facebookincubator/create-react-app/issues/2272#issuecomment-302832432
+
+self.addEventListener('install', () => self.skipWaiting());
+
+self.addEventListener('activate', () => {
+  self.clients.matchAll({ type: 'window' }).then(windowClients => {
+    for (let windowClient of windowClients) {
+      // Force open pages to refresh, so that they have a chance to load the
+      // fresh navigation response from the local dev server.
+      windowClient.navigate(windowClient.url);
+    }
+  });
+});