<pre class="shiki github-dark shaku"><code>// This is a JavaScript coding problem from BFE.dev /** * @param {(...args: any[]) =&gt; any} func * @param {number} wait * @param {boolean} option.leading * @param {boolean} option.trailing * @returns {(...args: any[]) =&gt; any} */function throttle(func, wait, option = { leading: true, trailing: true }) { let timerId = null; let lastArgs = {}; let isTrailEndCall = false; return function throttled(...args) { let res; if (!timerId &amp;&amp; option.leading || isTrailEndCall) { res = func.call(this, ...args); isTrailEndCall = false; } else { lastArgs = { context: this, args } } if (timerId) return; timerId = setTimeout(() =&gt; { const { context, args } = lastArgs; timerId = null; lastArgs = {}; if (option.trailing &amp;&amp; args) { isTrailEndCall = true; throttled.call(context, ...args); } }, wait) return res; }}</code></pre>

Intuitive recursion based timer solution.

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This is a follow up on 4. implement basic throttle(), please refer to it for detailed explanation. In this problem, you are asked to implement a enhan…