Route.useSearch() not honouring TS types (as per the docs)

[danielrhodeswarp]

Which project does this relate to?

Router

Describe the bug

I'm absorbing and learning all things TanStack Router and TanStack start these days. Very nice! Super human and readable code - reminds me of Laravel.

Now, the following code - which is more or less verbatim from one of the Router doc pages - works under the dev server, but does not compile with npm run build and gives an error Property 'summat' does not exist on type '{}'.

Have I missed something dopey here?

Your Example Website or App

https://stackblitz.com/edit/github-kbmszfr2?file=src%2Froutes%2Fposts.index.tsx

Steps to Reproduce the Bug or Issue

Try to build a TanStack Router project with the following route file:

`
import { createFileRoute } from "@tanstack/react-router";

type SummatOptions = "summat" | "owt" | "nowt";

type SummatSearch = {
summat: SummatOptions;
};

export const Route = createFileRoute("/posts/")({
component: PostsIndexComponent,
validateSearch: (search: Record<string, unknown>): SummatSearch => {
// validate and parse the search params into a typed state
return {
summat: (search.summat as SummatOptions) || "summat",
};
},
});

function PostsIndexComponent() {
const { summat } = Route.useSearch();
return

Select a post. ?summat={summat}

;
}
`

Expected behavior

I expect, in the component function , the type of summat to be inferred and available.
Rather, it is coming out as any or {}.

Screenshots or Videos

Platform

• Router / Start Version: [1.166.6]
• OS: [Linux]
• Browser: [Chromium]
• Browser Version: [145.0.7632.159]
• Bundler: [vite]
• Bundler Version: [e.g. 7.3.1]

Additional context

Running it in Linux but in a Docker container
(Have provided a Stackblitz but not familiar with this platform - I assume we can't npm run build in Stackblitz...)

[schiller-manuel]

please share a complete git repo that reproduces this. your stackblitz example compiles correctly