Upgrade to Angular 17

frontend/server.ts

@@ -1,101 +1,60 @@
-import 'zone.js/dist/zone-node';
-import './src/resources/config.js';
 
-import { ngExpressEngine } from '@nguniversal/express-engine';
-import * as express from 'express';
-import * as fs from 'fs';
-import * as path from 'path';
-import * as domino from 'domino';
-import { createProxyMiddleware } from 'http-proxy-middleware';
+import 'zone.js/node';
 
-import { join } from 'path';
-import { AppServerModule } from './src/main.server';
 import { APP_BASE_HREF } from '@angular/common';
-import { existsSync } from 'fs';
-
-import { ResizeObserver } from './shims';
-
-const template = fs.readFileSync(path.join(process.cwd(), 'dist/mempool/browser/en-US/', 'index.html')).toString();
-const win = domino.createWindow(template);
-
-// @ts-ignore
-win.__env = global.__env;
-
-// @ts-ignore
-win.matchMedia = (media) => {
-  return {
-    media,
-    matches: true,
-  };
-};
-
-// @ts-ignore
-win.setTimeout = (fn) => { fn(); };
-win.document.body.scrollTo = (() => {});
-win['ResizeObserver'] = ResizeObserver;
-// @ts-ignore
-global['window'] = win;
-// @ts-ignore
-global['document'] = win.document;
-// @ts-ignore
-global['history'] = { state: { } };
-// @ts-ignore
-Object.defineProperty(global, 'navigator', {
-  value: win.navigator,
-  writable: true
-});
-
-global['localStorage'] = {
-  getItem: () => '',
-  setItem: () => {},
-  removeItem: () => {},
-  clear: () => {},
-  length: 0,
-  key: () => '',
-};
+import { CommonEngine } from '@angular/ssr';
+import * as express from 'express';
+import { existsSync } from 'node:fs';
+import { join } from 'node:path';
+import bootstrap from './src/main.server';
 
 // The Express app is exported so that it can be used by serverless Functions.
-export function app(locale: string): express.Express {
+export function app(): express.Express {
   const server = express();
-  const distFolder = join(process.cwd(), `dist/mempool/browser/${locale}`);
-  const indexHtml = existsSync(join(distFolder, 'index.original.html')) ? 'index.original.html' : 'index';
+  const distFolder = join(process.cwd(), 'dist/mempool/browser');
+  const indexHtml = existsSync(join(distFolder, 'index.original.html'))
+    ? join(distFolder, 'index.original.html')
+    : join(distFolder, 'index.html');
 
-  // Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
-  server.engine('html', ngExpressEngine({
-    bootstrap: AppServerModule,
-  }));
+  const commonEngine = new CommonEngine();
 
   server.set('view engine', 'html');
   server.set('views', distFolder);
 
+  // Example Express Rest API endpoints
+  // server.get('/api/**', (req, res) => { });
+  // Serve static files from /browser
+  server.get('*.*', express.static(distFolder, {
+    maxAge: '1y'
+  }));
 
-  // static file handler so we send HTTP 404 to nginx
-  server.get('/**.(css|js|json|ico|webmanifest|png|jpg|jpeg|svg|mp4)*', express.static(distFolder, { maxAge: '1y', fallthrough: false }));
-  // handle page routes
-  server.get('/**', getLocalizedSSR(indexHtml));
+  // All regular routes use the Angular engine
+  server.get('*', (req, res, next) => {
+    const { protocol, originalUrl, baseUrl, headers } = req;
+
+    commonEngine
+      .render({
+        bootstrap,
+        documentFilePath: indexHtml,
+        url: `${protocol}://${headers.host}${originalUrl}`,
+        publicPath: distFolder,
+        providers: [
+          { provide: APP_BASE_HREF, useValue: baseUrl },],
+      })
+      .then((html) => res.send(html))
+      .catch((err) => next(err));
+  });
 
   return server;
 }
 
-function getLocalizedSSR(indexHtml) {
-  return (req, res) => {
-    res.render(indexHtml, {
-      req,
-      providers: [
-        { provide: APP_BASE_HREF, useValue: req.baseUrl }
-      ]
-    });
-  }
-}
-
-// only used for development mode
 function run(): void {
-  const port = process.env.PORT || 4000;
+  const port = process.env['PORT'] || 4000;
 
   // Start up the Node server
-  const server = app('en-US');
+  const server = app();
   server.listen(port, () => {
-    console.log(`Node Express server listening on port ${port}`);
+    console.log(`Node Express server listening on http://localhost:${port}`);
   });
 }
 
@@ -109,4 +68,4 @@ if (moduleFilename === __filename || moduleFilename.includes('iisnode')) {
   run();
 }
 
-export * from './src/main.server';
+export default bootstrap;