How do I implement async router guards in Vue 3?

How do I implement async router guards in Vue 3?

To implement async router guards in Vue 3, you can use the beforeEnter guard in your route definitions. This allows you to perform asynchronous operations before entering a route.

Can you show me a code example?

Sure! Here's a simple example:

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

What if I need to handle errors during the async operation?

You can catch errors in your async function and redirect or show an error message. For example:

beforeEnter: async (to, from, next) => {
  try {
    const isAuthenticated = await checkAuth();
    if (isAuthenticated) {
      next();
    } else {
      next('/login');
    }
  } catch (error) {
    console.error(error);
    next('/error');
  }
}