QwikDev · manucorporat · Jun 21, 2023 · Jun 21, 2023 · Jun 21, 2023 · Jun 21, 2023
@@ -12,6 +12,7 @@
     "dev": "vite --mode ssr --open",
     "dev.debug": "node --inspect-brk ../../node_modules/vite/bin/vite.js --mode ssr --force",
     "preview": "qwik build preview && vite preview --open",
+    "preview.only": "NODE_DEBUG=net,http node --inspect-brk ../../node_modules/vite/bin/vite.js preview",
     "preview.wrangler": "wrangler pages dev ./dist",
     "build.showcase": "pnpm node scripts/showcase.js",
     "start": "pnpm dev",

@@ -21,7 +21,7 @@ export default component$(() => {
       <head>
         <meta charSet="utf-8" />
         <RouterHead />
-        {/* <script dangerouslySetInnerHTML={`(${collectSymbols})()`} /> */}
+        <ServiceWorkerRegister />
       </head>
       <body
         class={{
@@ -30,7 +30,6 @@ export default component$(() => {
         }}
       >
         <RouterOutlet />
-        <ServiceWorkerRegister />
         <RealMetricsOptimization builderApiKey={BUILDER_PUBLIC_API_KEY} />
       </body>
     </QwikCityProvider>

@@ -95,7 +95,7 @@ In the [Caching Request and Response Pairs](#cache-api) docs we explained the po
 
 As an example, let's say an end-user currently has a slow 3G connection. When they first request the landing page, as fast as this slow network allows, the device downloads the HTML and renders the content (an area where Qwik really shines). On this slow connection, it'd be a shame if they'd have to also download a few more hundred kilobytes just to [make their app work and become interactive](https://www.builder.io/blog/hydration-is-pure-overhead).
 
-However, because the app was built with Qwik, the end-user doesn't need to download the entire application for it to become interactive. Instead, the end-user already downloaded the SSR rendered HTML app, and any interactive parts, such as an "Add to cart" button, can be prefetched immediately. 
+However, because the app was built with Qwik, the end-user doesn't need to download the entire application for it to become interactive. Instead, the end-user already downloaded the SSR rendered HTML app, and any interactive parts, such as an "Add to cart" button, can be prefetched immediately.
 
 > Note that we're only prefetching the actual listener code, and _not_ the entire stack of the component tree render functions.
 
@@ -148,7 +148,7 @@ setupServiceWorker();
 
 addEventListener('install', () => self.skipWaiting());
 
-addEventListener('activate', () => self.clients.claim());
+addEventListener('activate', (ev) => ev.waitUntil(self.clients.claim()));
 ```
 
 The source code for `src/routes/service-worker.ts` can be modified by the developer however they'd like. This includes opting-in, or opting-out, of setting up Qwik City's service worker.
@@ -163,7 +163,7 @@ So while Qwik City does provide a way to help prefetch and cache bundles, it doe
 
 ## Disabled During Development and Preview
 
-One gotcha during development and using Vite's preview mode is that the service worker is disabled which also disables speculative module fetching. During development we want to always ensure the latest development code is being used, rather than previous code. 
+One gotcha during development and using Vite's preview mode is that the service worker is disabled which also disables speculative module fetching. During development we want to always ensure the latest development code is being used, rather than previous code.
 
 Speculative module fetching only kicks on a production build. To see speculative module fetching in action you'll need to run the production build on a server other than development or preview.
 

@@ -5,6 +5,6 @@ import { setupServiceWorker } from '@builder.io/qwik-city/service-worker';
 
 setupServiceWorker();
 
-addEventListener('install', () => self.skipWaiting());
+self.addEventListener('install', () => self.skipWaiting());
 
-addEventListener('activate', () => self.clients.claim());
+self.addEventListener('activate', (ev) => ev.waitUntil(self.clients.claim()));
@@ -13,6 +13,11 @@ export default defineConfig(async () => {
 
   const routesDir = resolve('src', 'routes');
   return {
+    preview: {
+      headers: {
+        'Cache-Control': 'public, max-age=600',
+      },
+    },
     ssr: {
       noExternal: [
         '@mui/material',

@@ -480,6 +480,6 @@ const STATIC_CONTENT_TYPES: { [ext: string]: string } = {
 };
 
 const DEV_SERVICE_WORKER = `/* Qwik City Dev Service Worker */
-addEventListener('install', () => self.skipWaiting());
-addEventListener('activate', () => self.clients.claim());
+self.addEventListener('install', () => self.skipWaiting());
+self.addEventListener('activate', (ev) => ev.waitUntil(self.clients.claim()));
 `;
@@ -85,15 +85,10 @@ export async function fromNodeHttp(
         res.setHeader('Set-Cookie', cookieHeaders);
       }
       return new WritableStream<Uint8Array>({
-        start(controller) {
-          res.on('close', () => controller.error());
-        },
-        write(chunk, controller) {
+        write(chunk) {
           res.write(chunk, (error) => {
             if (error) {
-              // FIXME: Ideally, we would like to inform the writer that this was an error.
-              //        Not all writers seem to handle rejections, though.
-              // controller.error(error);
+              console.error(error);
             }
           });
         },

@@ -431,7 +431,7 @@ export function renderQwikMiddleware(render: Render) {
       const isStatic = getRequestMode(requestEv) === 'static';
       const result = await render({
         base: requestEv.basePathname + 'build/',
-        stream: stream,
+        stream,
         serverData: getQwikCityServerData(requestEv),
         containerAttributes: {
           ['q:render']: isStatic ? 'static' : '',

@@ -5,7 +5,8 @@ export const cachedFetch = (
   cache: Cache,
   fetch: Fetch,
   awaitingRequests: AwaitingRequests,
-  request: Request
+  request: Request,
+  preloadResponse?: Promise<Response> | undefined
 ) =>
   new Promise<Response>((promiseResolve, promiseReject) => {
     const url = request.url;
@@ -59,7 +60,8 @@ export const cachedFetch = (
           } else {
             // no cached response found or user didn't want to use the cache
             // do a full network request
-            return fetch(request).then(async (networkResponse) => {
+            const responsePromise = preloadResponse ? preloadResponse : fetch(request);
+            return responsePromise.then(async (networkResponse) => {
               if (networkResponse.ok) {
                 // network response was good, let's cache it
                 await cache.put(url, networkResponse.clone());

@@ -23,7 +23,7 @@ export const setupServiceWorkerScope = (
         ev.respondWith(
           swScope.caches.open(qBuildCacheName).then((qBuildCache) => {
             prefetchWaterfall(appBundles, qBuildCache, swFetch, url);
-            return cachedFetch(qBuildCache, swFetch, awaitingRequests, request);
+            return cachedFetch(qBuildCache, swFetch, awaitingRequests, request, ev.preloadResponse);
           })
         );
       }
@@ -63,15 +63,23 @@ export const setupServiceWorkerScope = (
     }
   });
 
-  swScope.addEventListener('activate', async () => {
-    try {
-      const qBuildCache = await swScope.caches.open(qBuildCacheName);
-      const cachedRequestKeys = await qBuildCache.keys();
-      const cachedUrls = cachedRequestKeys.map((r) => r.url);
-      const cachedRequestsToDelete = getCacheToDelete(appBundles, cachedUrls);
-      await Promise.all(cachedRequestsToDelete.map((r) => qBuildCache.delete(r)));
-    } catch (e) {
-      console.error(e);
-    }
+  swScope.addEventListener('activate', async (event) => {
+    event.waitUntil(
+      (async () => {
+        if ((self as any as ServiceWorkerGlobalScope).registration.navigationPreload) {
+          // Enable navigation preloads!
+          await (self as any as ServiceWorkerGlobalScope).registration.navigationPreload.enable();
+        }
+        try {
+          const qBuildCache = await swScope.caches.open(qBuildCacheName);
+          const cachedRequestKeys = await qBuildCache.keys();
+          const cachedUrls = cachedRequestKeys.map((r) => r.url);
+          const cachedRequestsToDelete = getCacheToDelete(appBundles, cachedUrls);
+          await Promise.all(cachedRequestsToDelete.map((r) => qBuildCache.delete(r)));
+        } catch (e) {
+          console.error(e);
+        }
+      })()
+    );
   });
 };
@@ -11,8 +11,7 @@ import { setupServiceWorker } from '@builder.io/qwik-city/service-worker';
 
 setupServiceWorker();
 
-addEventListener('install', () => self.skipWaiting());
-
-addEventListener('activate', () => self.clients.claim());
+self.addEventListener('install', () => self.skipWaiting());
+self.addEventListener('activate', (ev) => ev.waitUntil(self.clients.claim()));
 
 declare const self: ServiceWorkerGlobalScope;
@@ -18,10 +18,10 @@ export default component$(() => {
         <meta charSet="utf-8" />
         <link rel="manifest" href="/manifest.json" />
         <RouterHead />
+        <ServiceWorkerRegister />
       </head>
       <body lang="en">
         <RouterOutlet />
-        <ServiceWorkerRegister />
       </body>
     </QwikCityProvider>
   );

@@ -18,10 +18,10 @@ export default component$(() => {
         <meta charSet="utf-8" />
         <link rel="manifest" href="/manifest.json" />
         <RouterHead />
+        <ServiceWorkerRegister />
       </head>
       <body lang="en">
         <RouterOutlet />
-        <ServiceWorkerRegister />
       </body>
     </QwikCityProvider>
   );