What are async route guards in Vue 3?

What are async route guards in Vue 3?

Async route guards in Vue 3 are functions that allow you to control access to routes based on asynchronous operations.

Can you give me an example of how to implement them?

Sure! You can define an async route guard in your router configuration like this:

const router = new VueRouter({
  routes: [
    {
      path: '/protected',
      component: ProtectedComponent,
      beforeEnter: async (to, from, next) => {
        const isAuthenticated = await checkAuth();
        if (isAuthenticated) {
          next();
        } else {
          next('/login');
        }
      }
    }
  ]
});

What happens if the async operation fails?

If the async operation fails, you can handle it in the guard by calling next(false) to cancel the navigation or redirect to an error page.