(angular) Auth guard to check if user is logged in

angular---auth.guard.ts

import { Injectable } from '@angular/core';
import { CanLoad, Router } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthQuery } from './state/auth.query';
import { tap, take } from 'rxjs/operators';

@Injectable({
  providedIn: 'root',
})
export class AuthGuard implements CanLoad {
  constructor(private authQuery: AuthQuery, private router: Router) {}

  canLoad(): Observable<boolean> {
    return this.authQuery.isLoggedIn$.pipe(
      take(1),
      tap((isLoggedIn) => {
        if (!isLoggedIn) {
          return this.router.navigateByUrl('/');
        }
      })
    );
  }
}