Start: TypeScript errors when having `head` and `beforeLoad` with parameters

[MaxAltena]

Which project does this relate to?

Start

Describe the bug

If both head and beforeLoad have parameters, the beforeLoad returns type never:

Type '({}: BeforeLoadContextOptions<Register, any, undefined, {}, {}, AnyContext, unknown, undefined>) => {}' is not assignable to type '((ctx: BeforeLoadContextOptions<Register, any, undefined, {}, {}, AnyContext, unknown, undefined>) => never) | ((ctx: BeforeLoadContextOptions<Register, ... 6 more ..., undefined>) => never) | undefined'.
  Type '({}: BeforeLoadContextOptions<Register, any, undefined, {}, {}, AnyContext, unknown, undefined>) => {}' is not assignable to type '(ctx: BeforeLoadContextOptions<Register, any, undefined, {}, {}, AnyContext, unknown, undefined>) => never'.
    Type '{}' is not assignable to type 'never'.(2322)

This only seems to happen when using TanStack Start and not with TanStack Router.

Your Example Website or App

https://stackblitz.com/edit/github-bp351gyj?file=src%2Froutes%2F__root.tsx&view=editor

Steps to Reproduce the Bug or Issue

1. Install packages
2. Run npm run typecheck

Expected behavior

As a developer, I don't expect to have any type-errors

Screenshots or Videos

No response

Platform

• Router / Start Version: 1.145.10
• OS: macOS
• Bundler: vite
• Bundler Version: 7.1.7

Additional context

No response

[schiller-manuel]

property order matters, in this case beforeLoad must come before head

https://tanstack.com/router/latest/docs/eslint/create-route-property-order