add pwa

angular.json

@@ -48,7 +48,8 @@
                   "maximumError": "8kB"
                 }
               ],
-              "outputHashing": "all"
+              "outputHashing": "all",
+              "serviceWorker": "ngsw-config.json"
             },
             "development": {
               "optimization": false,

ngsw-config.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "./node_modules/@angular/service-worker/config/schema.json",
+  "index": "/index.html",
+  "assetGroups": [
+    {
+      "name": "app",
+      "installMode": "prefetch",
+      "resources": {
+        "files": [
+          "/favicon.ico",
+          "/index.csr.html",
+          "/index.html",
+          "/manifest.webmanifest",
+          "/*.css",
+          "/*.js"
+        ]
+      }
+    },
+    {
+      "name": "assets",
+      "installMode": "lazy",
+      "updateMode": "prefetch",
+      "resources": {
+        "files": ["/**/*.(svg|cur|jpg|jpeg|png|apng|webp|avif|gif|otf|ttf|woff|woff2)"]
+      }
+    }
+  ]
+}

package-lock.json

@@ -15,6 +15,7 @@
         "@angular/platform-browser": "^22.0.0-next.0",
         "@angular/platform-server": "^22.0.0-next.0",
         "@angular/router": "^22.0.0-next.0",
+        "@angular/service-worker": "^22.0.0-next.0",
         "@angular/ssr": "^22.0.0-next.5",
         "express": "^5.1.0",
         "rxjs": "~7.8.0",
@@ -646,6 +647,25 @@
         "rxjs": "^6.5.3 || ^7.4.0"
       }
     },
+    "node_modules/@angular/service-worker": {
+      "version": "22.0.0-next.8",
+      "resolved": "https://registry.npmjs.org/@angular/service-worker/-/service-worker-22.0.0-next.8.tgz",
+      "integrity": "sha512-dqQkRBX3WFNg8wJ+5NTbXUST2k7r4kMk9X0uCxaN86ptxvvn61LIF9rBwr7FKJLeDIq47jnWzwiX3UrN766YSw==",
+      "license": "MIT",
+      "dependencies": {
+        "tslib": "^2.3.0"
+      },
+      "bin": {
+        "ngsw-config": "ngsw-config.js"
+      },
+      "engines": {
+        "node": "^22.22.0 || >=24.13.1"
+      },
+      "peerDependencies": {
+        "@angular/core": "22.0.0-next.8",
+        "rxjs": "^6.5.3 || ^7.4.0"
+      }
+    },
     "node_modules/@angular/ssr": {
       "version": "22.0.0-next.5",
       "resolved": "https://registry.npmjs.org/@angular/ssr/-/ssr-22.0.0-next.5.tgz",

package.json

@@ -19,6 +19,7 @@
     "@angular/platform-browser": "^22.0.0-next.0",
     "@angular/platform-server": "^22.0.0-next.0",
     "@angular/router": "^22.0.0-next.0",
+    "@angular/service-worker": "^22.0.0-next.0",
     "@angular/ssr": "^22.0.0-next.5",
     "express": "^5.1.0",
     "rxjs": "~7.8.0",

public/manifest.webmanifest

@@ -0,0 +1,57 @@
+{
+  "name": "angular-22-ssr-pwa",
+  "short_name": "angular-22-ssr-pwa",
+  "display": "standalone",
+  "scope": "./",
+  "start_url": "./",
+  "icons": [
+    {
+      "src": "icons/icon-72x72.png",
+      "sizes": "72x72",
+      "type": "image/png",
+      "purpose": "maskable any"
+    },
+    {
+      "src": "icons/icon-96x96.png",
+      "sizes": "96x96",
+      "type": "image/png",
+      "purpose": "maskable any"
+    },
+    {
+      "src": "icons/icon-128x128.png",
+      "sizes": "128x128",
+      "type": "image/png",
+      "purpose": "maskable any"
+    },
+    {
+      "src": "icons/icon-144x144.png",
+      "sizes": "144x144",
+      "type": "image/png",
+      "purpose": "maskable any"
+    },
+    {
+      "src": "icons/icon-152x152.png",
+      "sizes": "152x152",
+      "type": "image/png",
+      "purpose": "maskable any"
+    },
+    {
+      "src": "icons/icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "maskable any"
+    },
+    {
+      "src": "icons/icon-384x384.png",
+      "sizes": "384x384",
+      "type": "image/png",
+      "purpose": "maskable any"
+    },
+    {
+      "src": "icons/icon-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "maskable any"
+    }
+  ]
+}

src/app/app.config.ts

@@ -1,13 +1,18 @@
-import { ApplicationConfig, provideBrowserGlobalErrorListeners } from '@angular/core';
+import { ApplicationConfig, provideBrowserGlobalErrorListeners, isDevMode } from '@angular/core';
 import { provideRouter } from '@angular/router';
 
 import { routes } from './app.routes';
 import { provideClientHydration, withEventReplay } from '@angular/platform-browser';
+import { provideServiceWorker } from '@angular/service-worker';
 
 export const appConfig: ApplicationConfig = {
   providers: [
     provideBrowserGlobalErrorListeners(),
     provideRouter(routes),
     provideClientHydration(withEventReplay()),
+    provideServiceWorker('ngsw-worker.js', {
+      enabled: !isDevMode(),
+      registrationStrategy: 'registerWhenStable:30000',
+    }),
   ],
 };

src/index.html

@@ -6,8 +6,10 @@
     <base href="/" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <link rel="icon" type="image/x-icon" href="favicon.ico" />
+    <link rel="manifest" href="manifest.webmanifest" />
   </head>
   <body>
     <app-root></app-root>
+    <noscript>Please enable JavaScript to continue using this application.</noscript>
   </body>
 </html>