import { ClassProvider, FactoryProvider, InjectionToken } from "@angular/core";

export const WINDOW = new InjectionToken("WindowToken");

export function _window(): any {
  return window;
}

export abstract class WindowRef {
  get nativeWindow(): Window {
    throw new Error("Not implemented.");
  }
}
export class BrowserWindowRef extends WindowRef {
  constructor() {
    super();
  }
  get nativeWindow(): Window {
    return _window();
  }
}
const browserWindowProvider: ClassProvider = {
  provide: WindowRef,
  useClass: BrowserWindowRef
};
export const windowProvider: FactoryProvider = {
  provide: WINDOW,
  useFactory: _window,
  deps: []
};
export const WINDOW_PROVIDERS = [
  browserWindowProvider,
  windowProvider
];