I have been facing an issue while updating my Angular application from version 15 to 16. Everything seems to work fine with Angular, including building for Angular Universal without any errors. However, when I attempt to serve using npm run serve:ssr, it throws an error.
https://i.stack.imgur.com/w9aeR.png
TypeError: Right-hand side of 'instanceof' is not an object
Initially, I suspected that there might be an error in my code. To test this, I removed all the code and retained only the app component with a simple heading. Surprisingly, it still resulted in the same error.
server.ts
import { enableProdMode } from "@angular/core";
(global as any).WebSocket = require('ws');
(global as any).XMLHttpRequest = require('xhr2');
import 'zone.js/dist/zone-node';
const domino = require('domino');
const fs = require('fs');
const path = require('path');
import { ngExpressEngine } from '@nguniversal/express-engine';
import * as express from 'express';
import { join } from 'path';
import { existsSync } from 'fs';
const dotenv = require('dotenv');
dotenv.config();
const distFolder = join(process.cwd(), 'dist/project-name/browser');
const template = fs.readFileSync(path.join(distFolder, 'index.html')).toString();
const win = domino.createWindow(template.toString());
global['window'] = win;
global['document'] = win.document;
global['DOMTokenList'] = win.DOMTokenList;
global['Node'] = win.Node;
global['Text'] = win.Text;
global['HTMLElement'] = win.HTMLElement;
global['navigator'] = win.navigator;
global['getComputedStyle'] = win.getComputedStyle;
// (global as any).self = {fetch: require('node-fetch')};
// Faster server renders w/ Prod mode (dev mode never needed)
enableProdMode();
import { AppServerModule } from './src/main.server';
import { APP_BASE_HREF } from '@angular/common';
// The Express app is exported so that it can be used by serverless Functions.
export function app(): express.Express {
const server = express();
const distFolder = join(process.cwd(), 'dist/project-name/browser');
const indexHtml = existsSync(join(distFolder, 'index.original.html')) ? 'index.original.html' : 'index';
// Our Universal express-engine (found @ https://github.com/angular/universal/tree/main/modules/express-engine)
server.engine('html', ngExpressEngine({
bootstrap: AppServerModule
}));
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'
}));
// All regular routes use the Universal engine
server.get('*', (req, res) => {
res.render(indexHtml, { req, providers: [{ provide: APP_BASE_HREF, useValue: req.baseUrl }] });
});
return server;
}
function run(): void {
const port = process.env.PORT || 8000;
// Start up the Node server
const server = app();
server.get('/env', (req, res) => {
res.json(process.env);
})
server.listen(port, () => {
console.log(`Node Express server listening on https://localhost:${port}`);
});
}
// Webpack will replace 'require' with '__webpack_require__'
// '__non_webpack_require__' is a proxy to Node 'require'
// The below code is to ensure that the server is run only when not requiring the bundle.
declare const __non_webpack_require__: NodeRequire;
const mainModule = __non_webpack_require__.main;
const moduleFilename = mainModule && mainModule.filename || '';
if (moduleFilename === __filename || moduleFilename.includes('iisnode')) {
run();
}
export * from './src/main.server';
Could there be something important that I am overlooking?