<pre class="shiki github-dark shaku"><code>/** * @param { Function } func */function curry(func) { return function curried(...args) { const complete = args.length &gt;= func.length &amp;&amp; !args.slice(0, func.length).includes(curry.placeholder); if(complete) return func.apply(this, args) return function(...newArgs) { // replace placeholders in args with values from newArgs const res = args.map(arg =&gt; arg === curry.placeholder &amp;&amp; newArgs.length ? newArgs.shift() : arg); return curried(...res, ...newArgs); } }}curry.placeholder = Symbol()</code></pre>

Accepted Solution - replace placeholder args in each iteration

This is a follow-up on 1. implement curry() please implement curry() which also supports placeholder. Here is an example const join = (a, b, c) => { r…