<pre class="shiki github-dark shaku"><code>// your code here, please don't use Return&lt;T&gt; in your codetype MyReturnType&lt;T extends (...args: any) =&gt; any&gt; = T extends (...args: any) =&gt; infer R ? R : never</code></pre>

This is my accepted solution

Similar to Parameters<T>,ReturnType<T>, as the name says itself, returns the return type of function type T. Please implement MyReturnType<T> by yours…