fix(qwik-city): custom service-worker.ts code is also being unregistered

.changeset/thin-horses-bake.md

@@ -0,0 +1,7 @@
+---
+'@builder.io/qwik-city': patch
+---
+
+FIX: Your service-worker.js won't be unregistered anymore if you added custom logic to it. 
+
+> Note: Qwik 1.14.0 and above now use `<link rel="modulepreload">` by default. If you didn't add custom service-worker logic, you should remove your service-worker.ts file(s) for the `ServiceWorkerRegister` Component to actually unregister the service-worker.js and delete its related cache. Make sure to keep the `ServiceWorkerRegister` Component in your app (without any service-worker.ts file) as long as you want to unregister the service-worker.js for your users.

packages/qwik-city/src/buildtime/runtime-generation/generate-service-worker.ts

@@ -2,30 +2,48 @@ import type { BuildContext } from '../types';
 
 export function generateServiceWorkerRegister(ctx: BuildContext, swRegister: string) {
   let swReg: string;
+  let swUrl = '/service-worker.js';
 
-  if (ctx.isDevServer) {
+  // Also unregister if the developer removed the service-worker.ts file since Qwik 1.14.0 and above now use modulepreload by default
+  if (ctx.isDevServer || ctx.serviceWorkers.length === 0) {
     swReg = SW_UNREGISTER;
   } else {
     swReg = swRegister;
 
-    let swUrl = '/service-worker.js';
-    if (ctx.serviceWorkers.length > 0) {
-      const sw = ctx.serviceWorkers.sort((a, b) =>
-        a.chunkFileName.length < b.chunkFileName.length ? -1 : 1
-      )[0];
-      swUrl = ctx.opts.basePathname + sw.chunkFileName;
-    }
-
-    swReg = swReg.replace('__url', swUrl);
+    const sw = ctx.serviceWorkers.sort((a, b) =>
+      a.chunkFileName.length < b.chunkFileName.length ? -1 : 1
+    )[0];
+    swUrl = ctx.opts.basePathname + sw.chunkFileName;
   }
+  swReg = swReg.replace('__url', swUrl);
 
   return `export default ${JSON.stringify(swReg)};`;
 }
 
 const SW_UNREGISTER = `
-navigator.serviceWorker?.getRegistrations().then((regs) => {
-  for (const reg of regs) {
-    reg.unregister();
-  }
-});
+"serviceWorker"in navigator&&navigator.serviceWorker.getRegistrations().then(r=>{for(const e of r){const c='__url'.split("/").pop();e.active?.scriptURL.endsWith(c||"service-worker.js")&&e.unregister().catch(console.error)}}),"caches"in window&&caches.keys().then(r=>{const e=r.find(c=>c.startsWith("QwikBuild"));e&&caches.delete(e).catch(console.error)}).catch(console.error)
 `;
+// Code in SW_UNREGISTER unregisters the service worker and deletes the cache; it is the minified version of the following:
+// (() => {
+//   if ('serviceWorker' in navigator) {
+//     navigator.serviceWorker.getRegistrations().then((regs) => {
+//       for (const reg of regs) {
+//         const url = '__url'.split('/').pop();
+//         if (reg.active?.scriptURL.endsWith(url || 'service-worker.js')) {
+//           reg.unregister().catch(console.error);
+//         }
+//       }
+//     });
+//   }
+//   if ('caches' in window) {
+//     caches
+//       .keys()
+//       .then((names) => {
+//         const cacheName = names.find((name) => name.startsWith('QwikBuild'));
+//         if (cacheName) {
+//           caches.delete(cacheName).catch(console.error);
+//         }
+//       })
+//       .catch(console.error);
+//   }
+// })();

packages/qwik-city/src/buildtime/vite/plugin.ts

@@ -191,6 +191,7 @@ function qwikCityPlugin(userOpts?: QwikCityVitePluginOptions): any {
           }
         }
       }
+
       return null;
     },
 

packages/qwik-city/src/runtime/src/sw-component.tsx

@@ -5,6 +5,12 @@ import type { JSXOutput } from '@builder.io/qwik';
  * JS extensions are allowed) will be picked up, bundled into a separate file, and registered as a
  * service worker.
  *
+ * Qwik 1.14.0 and above now use `<link rel="modulepreload">` by default. If you didn't add custom
+ * service-worker logic, you should remove your service-worker.ts file(s) for the
+ * `ServiceWorkerRegister` Component to actually unregister the service-worker.js and delete its
+ * related cache. Make sure to keep the `ServiceWorkerRegister` Component in your app (without any
+ * service-worker.ts file) as long as you want to unregister the service-worker.js for your users.
+ *
  * @public
  */
 export const ServiceWorkerRegister = (props: { nonce?: string }): JSXOutput => (

packages/qwik-city/src/runtime/src/sw-register.ts

@@ -2,24 +2,21 @@
 
 (() => {
   if ('serviceWorker' in navigator) {
-    navigator.serviceWorker.getRegistrations().then((regs) => {
-      for (const reg of regs) {
-        const url = '__url'.split('/').pop();
-        if (reg.active?.scriptURL.endsWith(url || 'service-worker.js')) {
-          reg.unregister().catch(console.error);
-        }
-      }
-    });
-  }
-  if ('caches' in window) {
-    caches
-      .keys()
-      .then((names) => {
-        const cacheName = names.find((name) => name.startsWith('QwikBuild'));
-        if (cacheName) {
-          caches.delete(cacheName).catch(console.error);
-        }
-      })
-      .catch(console.error);
+    navigator.serviceWorker.register('__url').catch((e) => console.error(e));
+    // We need to delete the cache since we are using modulepreload by default in qwik 1.14 and above
+    if ('caches' in window) {
+      caches
+        .keys()
+        .then((names) => {
+          const cacheName = names.find((name) => name.startsWith('QwikBuild'));
+          if (cacheName) {
+            caches.delete(cacheName).catch(console.error);
+          }
+        })
+        .catch(console.error);
+    }
+  } else {
+    // eslint-disable-next-line no-console
+    console.log('Service worker not supported in this browser.');
   }
 })();