<pre class="shiki github-dark shaku"><code>/** * @param {Array&lt;(arg: any) =&gt; any&gt;} funcs * @return {(arg: any) =&gt; any} */// function pipe(funcs) {// return function(arg) {// let result = arg// for (let func of funcs) {// result = func.call(this, result)// }// return result// }// }function pipe(funcs){	return (arg)=&gt;{		return funcs.reduce((acc,func)=&gt;{			return func.call(this,acc)		},arg)	}}</code></pre>

I dont know

what is Composition? It is actually not that difficult to understand, see @dan_abramov 's explanation. Here you are asked to create a pipe() function,…