<!--info-header-start--><h1>IsUnion <img src="https://img.shields.io/badge/-%EB%B3%B4%ED%86%B5-d9901a" alt="보통"/> <img src="https://img.shields.io/badge/-%23union-999" alt="#union"/></h1><blockquote><p>by null <a href="https://github.com/bencor" target="_blank">@bencor</a></p></blockquote><p><a href="https://tsch.js.org/1097/play/ko" target="_blank"><img src="https://img.shields.io/badge/-%EB%8F%84%EC%A0%84%ED%95%98%EA%B8%B0-3178c6?logo=typescript&logoColor=white" alt="도전하기"/></a> &nbsp;&nbsp;&nbsp;<a href="./README.md" target="_blank"><img src="https://img.shields.io/badge/-English-gray" alt="English"/></a> </p><!--info-header-end-->

`T`를 입력으로 받고, `T`가 `Union` 유형으로 확인되는지 여부를 반환하는 `IsUnion`을 구현하세요

예시:

```ts
type case1 = IsUnion<string> // false
type case2 = IsUnion<string | number> // true
type case3 = IsUnion<[string | number]> // false
```

<!--info-footer-start--><br><a href="../../README.ko.md" target="_blank"><img src="https://img.shields.io/badge/-%EB%8F%8C%EC%95%84%EA%B0%80%EA%B8%B0-grey" alt="돌아가기"/></a> <a href="https://tsch.js.org/1097/answer/ko" target="_blank"><img src="https://img.shields.io/badge/-%EC%A0%95%EB%8B%B5%20%EA%B3%B5%EC%9C%A0%ED%95%98%EA%B8%B0-teal" alt="정답 공유하기"/></a> <a href="https://tsch.js.org/1097/solutions" target="_blank"><img src="https://img.shields.io/badge/-%EC%A0%95%EB%8B%B5%20%EB%B3%B4%EA%B8%B0-de5a77?logo=awesome-lists&logoColor=white" alt="정답 보기"/></a> <hr><h3>관련된 문제들</h3><a href="https://github.com/type-challenges/type-challenges/blob/main/questions/01042-medium-isnever/README.ko.md" target="_blank"><img src="https://img.shields.io/badge/-1042%E3%83%BBIsNever-d9901a" alt="1042・IsNever"/></a>  <a href="https://github.com/type-challenges/type-challenges/blob/main/questions/00223-hard-isany/README.md" target="_blank"><img src="https://img.shields.io/badge/-223%E3%83%BBIsAny-de3d37" alt="223・IsAny"/></a>  <a href="https://github.com/type-challenges/type-challenges/blob/main/questions/04484-medium-istuple/README.md" target="_blank"><img src="https://img.shields.io/badge/-4484%E3%83%BBIsTuple-d9901a" alt="4484・IsTuple"/></a> <!--info-footer-end-->
