Add linting to CI

public/service-worker.js

@@ -19,14 +19,14 @@ const normalizeUrl = (url) => {
   return url_.href
 }
 
-self.addEventListener("install", async (event) => {
+self.addEventListener("install", async () => {
   const cache = await caches.open(CACHE_NAME)
   const additions = cache.addAll(FILES_TO_CACHE)
   await additions
   console.info(`Files cached: [\n  ${FILES_TO_CACHE.join(`,\n  `)}\n]`)
 })
 
-self.addEventListener("activate", async (event) => {
+self.addEventListener("activate", async () => {
   const oldCacheKeys = (await caches.keys()).filter((key) => key != CACHE_NAME)
   oldCacheKeys.forEach((key) => caches.delete(key))
 })
@@ -42,18 +42,7 @@ self.addEventListener("fetch", (event) => {
         return response
       })
       .catch(() => caches.match(normalizedUrl))
-      .catch((e) => null)
+      .catch(() => null)
   }
-  event.respondWith(
-    fetch(event.request)
-      .then(async (response) => {
-        if (FILES_TO_CACHE.includes(new URL(normalizedUrl).pathname)) {
-          const cache = await caches.open(CACHE_NAME)
-          await cache.put(normalizedUrl, response.clone())
-        }
-        return response
-      })
-      .catch(() => caches.match(normalizedUrl))
-      .catch((e) => null),
-  )
+  event.respondWith(response)
 })