<pre class="shiki github-dark shaku"><code>/** * @param {Array&lt;(arg: any) =&gt; any&gt;} funcs * @return {(arg: any) =&gt; any} */function pipe(stepsArray) { // RETURNING A COMPOSITION FUNCTION	 return (base) =&gt; { // IF 10 IS PASSED AS 'X' THEN SETTING IT AS INITIAL VALUE let currValue = base; // ITERATING OVER ALL THE STEPS ONE BY ONE AND CALLING RESPECTIVE FUCNTION for(let step of stepsArray) { /* For example if we consider pipe(mul(2), add(10)) and X = 20 Then we will start with initial value as 20 and get 20 * 2 = 40 now the currValue is 40 In the next iteration we pass the initail values 40 and get 40 + 10 = 50 */ currValue = step(currValue) } return currValue; }}</code></pre>

Simple O(N) Solution

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,…