**What**
- Add support for defining outlet routes using `@`, e.g. `/src/admin/routes/brands/@create/page.tsx`
- Add support for exporting a `loader` from a route file.
- Add support for exporting a `handle` from a route file.
Example usage of a loader and handle:
```tsx
// src/admin/routes/articles/[id]/page.tsx
import { Button, Container, Heading } from "@medusajs/ui";
import {
Link,
LoaderFunctionArgs,
Outlet,
UIMatch,
useLoaderData,
} from "react-router-dom";
export async function loader({ params }: LoaderFunctionArgs) {
const { id } = params;
return {
id,
};
}
export const handle = {
breadcrumb: (match: UIMatch<{ id: string }>) => {
const { id } = match.params;
return `#${id}`;
},
};
const ProfilePage = () => {
const { id } = useLoaderData() as Awaited<ReturnType<typeof loader>>;
return (
<div>
<Container className="flex justify-between items-center">
<Heading>Article {id}</Heading>
<Button size="small" variant="secondary" asChild>
<Link to="edit">Edit</Link>
</Button>
</Container>
{/* This will be used for the next example of an Outlet route */}
<Outlet />
</div>
);
};
export default ProfilePage;
```
In the above example we are passing data to the route from a loader, and defining a breadcrumb using the handle.
Example of a outlet route:
```tsx
// src/admin/routes/articles/[id]/@edit/page.tsx
import { Button, Container, Heading } from "@medusajs/ui";
const ProfileEditPage = () => {
return (
<div>
{/* Form goes here */}
</div>
);
};
export default ProfileEditPage;
```
This outlet route will be rendered in the <Outlet /> in the above example when the URL is /articles/1/edit
Resolves CMRC-913, CMRC-914, CMRC-915
a88f6576bd