Which project does this relate to?

Router

Describe the bug

I'm experiencing a TypeScript issue when using Route.useLoaderData() in latest version of TanStack Router.
The route works correctly at runtime, but TypeScript breaks / loses type inference when accessing loader data.

Your Example Website or App

Steps to Reproduce the Bug or Issue

export const Route = createFileRoute("/users")({ 
  loader: () => {
    return {
      users: [{ id: 1, name: "John" }],
    };
  },
  component: UsersPage,
});

function UsersPage() {
  const data = Route.useLoaderData();

  // ❌ TypeScript error or missing type inference here
  data.users.map(user => user.name);

  return null;
}

Expected behavior

Route.useLoaderData() should return properly inferred types from the route loader, similar to how useLoaderData works in other router implementations.

Screenshots or Videos

No response

Platform

• Router / Start Version: 1.157.11
• OS: Linux
• Browser: Firefox
• Browser Version: 147.0.1
• Bundler: Vite
• Bundler Version: 7.3.1

Additional context

No response