how to get returnType of useSearch***Params?

[ddalpange]

I want to get returnType of useSomethingSearchParams('/sign-up')

I think I have to use ReturnType<ConvertTable[TPath]>;

but ConvertTable was not exported..

type Pathname = keyof ConvertTable;
export default function useSomethingSearchParams<TPath extends Pathname>(path: TPath) {
  const {query} = useRouter();
  if (!convertTable[path]) throw new Error(`unknown path: ${path}`);
  return convertTable[path](query) as ReturnType<ConvertTable[TPath]>;
}
type ConvertTable = typeof convertTable;
const convertTable = {
  '/sign-up': (query: ParsedUrlQuery) => {
    const result: any = {};
    {
      // "temporaryCode"
      const value = query['temporaryCode'];

      if (value == null) {
        result['temporaryCode'] = null;
      } else if (Array.isArray(value)) {
        result['temporaryCode'] = value[0];
      } else {
        result['temporaryCode'] = value;
      }
    }
    // ....
    return result as {
      readonly temporaryCode: string | null;
    };
  },
} as const;

[disjukr]

ConvertTable이 직접 필요한 상황인가요?

useSomethingSearchParams('/sign-up')의 반환 타입이 알고싶은 경우는 실제로 호출도 해봐야 할 상황일 것 같은데,

const searchParams = useSomethingSearchParams('/sign-up');
type X = typeof searchParams;

이렇게 알아내는 방법으로는 부족할까요?

[ddalpange]

네 함수 호출 전에 알아야해요.
https://github.com/riiid/www/blob/f987fc8ee7e5fdcb7a859baf0f0318bacb6a9a64/testprep-classroom-web/src/pages/sign-up/SignUpContainer.tsx#L83-L88