angularexpressserver-side-renderingangular-universalangular10

this.debug is not a function Angular Universal

I'm applying SSR in my project by using Angular 10.

I've found that lot of people recommend using domino.

Below is my server.ts file

...

import { existsSync, readFileSync } from 'fs';
import { createWindow } from 'domino';

const scripts = readFileSync('dist/video-website-angular/browser/index.html').toString();

const window = createWindow(scripts);
global['window'] = window;

import { AppServerModule } from './src/main.server';
import { APP_BASE_HREF } from '@angular/common';

...

When I run npm run dev:ssr, I get the error

Solution

  • Actually this.debug is not a function error is just a side effect. The actual error is the first one:

    enter image description here

    In order to fix it, you need to declare window as any, like this:

    const window: any = createWindow(scripts);

// or via a cast

const window = createWindow(scripts) as any;

    There is also another approach, that I like least since it practically make the TS code behave like JS, and cut all the typing and code hints support, but here it goes:

    (global as any).window = window;
(global as any).document = window.document;
(global as any).Event = window.Event;
(global as any).KeyboardEvent = window.KeyboardEvent;

    Either of these should fix your issue.