fix: properly remove caches before removing service worker (#1655)

scripts/service-worker.js

@@ -0,0 +1,15 @@
+self.addEventListener('install', function () {
+  self.skipWaiting()
+})
+
+self.addEventListener('activate', function (event) {
+  event.waitUntil(
+    caches.keys().then(function (cacheNames) {
+      return Promise.all(
+        cacheNames.map(function (cacheName) {
+          return caches.delete(cacheName)
+        })
+      )
+    })
+  )
+})

server.js

@@ -44,6 +44,7 @@ app.use(compression())
 app.use(helmet())
 app.use(sass())
 app.use('/scripts/index.js', browserify('scripts/index.js'))
+app.get('/service-worker.js', (req, res) => res.sendFile(path.resolve(__dirname, 'scripts', 'service-worker.js')))
 app.use(slashes(false))
 app.use(cookieParser())
 app.use(requestLanguage({