<pre class="shiki github-dark shaku"><code>// your code here, please don't ues Extract&lt;T, U&gt; in your codetype MyExtract&lt;T, U&gt; = T extends U ? T : never;</code></pre>

This is my accepted solution

As the opposite of Exclude<T, K>,Extract<T, U> returns a type by extracting union members from T that are assignable to U. Please implement MyExtract<…