Missing undefined in 'data' type

[nik-webdevelop]

Adding config (even empty object) as a third argument to the useSWR hook results in missing undefined in the data type:

const { data } = useSWR<FetchResult>(
  "/url",
  (url) => fetch(url).then((r) => r.json()),
  {}
);

data type is FetchResult but should be FetchResult | undefined

Could be related to this swr issue

Codesandbox

SWR version.
2.1.0

[promer94]

Fixed in #2506