feat: add pwa.cache.* option to precisely control caching (#1501)

assets/js/pwa/sw.js

@@ -1,89 +0,0 @@
----
-layout: compress
-permalink: '/sw.js'
-# PWA service worker
----
-
-self.importScripts('{{ "/assets/js/data/swcache.js" | relative_url }}');
-
-const cacheName = 'chirpy-{{ "now" | date: "%s" }}';
-
-function verifyDomain(url) {
-  for (const domain of allowedDomains) {
-    const regex = RegExp(`^http(s)?:\/\/${domain}\/`);
-    if (regex.test(url)) {
-      return true;
-    }
-  }
-
-  return false;
-}
-
-function isExcluded(url) {
-  for (const item of denyUrls) {
-    if (url === item) {
-      return true;
-    }
-  }
-  return false;
-}
-
-self.addEventListener('install', (event) => {
-  event.waitUntil(
-    caches.open(cacheName).then((cache) => {
-      return cache.addAll(resource);
-    })
-  );
-});
-
-self.addEventListener('activate', (event) => {
-  event.waitUntil(
-    caches.keys().then((keyList) => {
-      return Promise.all(
-        keyList.map((key) => {
-          if (key !== cacheName) {
-            return caches.delete(key);
-          }
-        })
-      );
-    })
-  );
-});
-
-self.addEventListener('message', (event) => {
-  if (event.data === 'SKIP_WAITING') {
-    self.skipWaiting();
-  }
-});
-
-self.addEventListener('fetch', (event) => {
-  event.respondWith(
-    caches.match(event.request).then((response) => {
-      if (response) {
-        return response;
-      }
-
-      return fetch(event.request).then((response) => {
-        const url = event.request.url;
-
-        if (
-          event.request.method !== 'GET' ||
-          !verifyDomain(url) ||
-          isExcluded(url)
-        ) {
-          return response;
-        }
-
-        /* see: <https://developers.google.com/web/fundamentals/primers/service-workers#cache_and_return_requests> */
-        let responseToCache = response.clone();
-
-        caches.open(cacheName).then((cache) => {
-          /* console.log('[sw] Caching new resource: ' + event.request.url); */
-          cache.put(event.request, responseToCache);
-        });
-
-        return response;
-      });
-    })
-  );
-});