Type-only useSearchParams typed from a route's search schema (no runtime witness)

[lovrozagar]

Version: @solidjs/router 2.0.0-next.42

useSearchParams<In, Out>(path: TypedSearchPath<In, Out>) (dist/routing.d.ts:160) needs a value to be typed. At runtime the argument is only a switch (dist/routing.js:195, const query = path ? ... : ...): the schemas that run are the matched routes', and path's value is never read.

So a component that wants the typed search of its route has to either import to and build a path node (e.g. useSearchParams(to.lab(1))), which pulls a value and the route tree's types into its chunk, or cast a phantom TypedSearchPath.

Question / idea: could there be a type-only form, typed from a route's search schema the way RouteProps<typeof route> types params? For example:

const [search, setSearch] = useSearchParams<typeof route>()

We ship a small helper, useRouteSearch<typeof route>(), that does this today by reading R["search"]["~standard"]["types"] and passing a phantom witness. A supported overload would make it unnecessary.