<!--info-header-start--><h1>Get Required <img src="https://img.shields.io/badge/-%E4%B8%8A%E7%B4%9A-de3d37" alt="上級"/> <img src="https://img.shields.io/badge/-%23utils-999" alt="#utils"/> <img src="https://img.shields.io/badge/-%23infer-999" alt="#infer"/></h1><blockquote><p>by Zheeeng <a href="https://github.com/zheeeng" target="_blank">@zheeeng</a></p></blockquote><p><a href="https://tsch.js.org/57/play/ja" target="_blank"><img src="https://img.shields.io/badge/-%E6%8C%91%E6%88%A6%E3%81%99%E3%82%8B-3178c6?logo=typescript&logoColor=white" alt="挑戦する"/></a> &nbsp;&nbsp;&nbsp;<a href="./README.md" target="_blank"><img src="https://img.shields.io/badge/-English-gray" alt="English"/></a>  <a href="./README.zh-CN.md" target="_blank"><img src="https://img.shields.io/badge/-%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87-gray" alt="简体中文"/></a> </p><!--info-header-end-->

必須なフィールドのみを残す高度なユーティリティ型 `GetRequired<T>` を実装してください。

例えば

```ts
type I = GetRequired<{ foo: number, bar?: string }> // expected to be { foo: number }
```

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