README - Type Challenges

<h1>Remove Index Signature </h1><blockquote><p>by hiroya iizuka <a href="https://github.com/hiroyaiizuka" target="_blank">@hiroyaiizuka</a></p></blockquote><p><a href="https://tsch.js.org/1367/play" target="_blank"></a>    <a href="./README.ko.md" target="_blank"></a> </p>

Implement RemoveIndexSignature<T> , exclude the index signature from object types.

For example:

type Foo = {
  [key: string]: any
  foo(): void
}

type A = RemoveIndexSignature<Foo> // expected { foo(): void }