How do I use async routing guards in Vue?

How do I use async routing guards in Vue?

In Vue, async routing guards can be used to handle asynchronous operations before navigating to a route. You can define them in your route configuration.

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

Sure! You can use the beforeEnter guard in your route definition. 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 fetch data before entering the route?

You can also fetch data in the same beforeEnter guard. Just make sure to call next() after your data is ready. Here's an example:

beforeEnter: async (to, from, next) => {
  const data = await fetchData();
  if (data) {
    next();
  } else {
    next('/error');
  }
}