Access window

demo.component.ts

import { PLATFORM_ID } from '@angular/core';
import { isPlatformBrowser } from '@angular/common';

@Component({...})
export class DemoComponent implements OnInit {
  constructor(@Inject(PLATFORM_ID) private platformId: Object) { }
  ngOnInit() {
    if (isPlatformBrowser(this.platformId)){
      // here you can access window
      console.log(window);
    }
  }
}