How do I handle errors with authentication guards in Angular?

How do I handle errors with authentication guards in Angular?

In Angular, you can handle errors in authentication guards by implementing the canActivate method and using try-catch blocks.

Can you give me an example of that?

Sure! You can create a guard like this:

import { Injectable } from '@angular/core';
import { CanActivate, Router } from '@angular/router';
import { AuthService } from './auth.service';

@Injectable({ providedIn: 'root' })
export class AuthGuard implements CanActivate {
  constructor(private authService: AuthService, private router: Router) {}

  canActivate(): boolean {
    try {
      const isAuthenticated = this.authService.isLoggedIn();
      if (!isAuthenticated) {
        this.router.navigate(['/login']);
        return false;
      }
      return true;
    } catch (error) {
      console.error('Error in AuthGuard:', error);
      this.router.navigate(['/error']);
      return false;
    }
  }
}

What should I do if the error is related to the server?

If the error is server-related, you can handle it by displaying a user-friendly message and possibly redirecting to an error page.