How can I implement error handling in Angular guards?

How can I implement error handling in Angular guards?

You can implement error handling in Angular guards by using try-catch blocks within the guard's logic.

Can you give me an example of a guard with error handling?

Sure! Here's a simple example:

import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';

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

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

  private checkAuthentication(): boolean {
    // Logic to check if the user is authenticated
    return true; // or false based on your logic
  }
}

This guard checks if the user is authenticated and handles any errors that occur.

What should I do if an error occurs in the guard?

If an error occurs, you can log the error for debugging and redirect the user to an error page or a safe route.