<pre class="shiki github-dark shaku"><code>/** * @param {Function} func * @param {number} wait * @param {boolean} option.leading * @param {boolean} option.trailing */function debounce(func, wait, option = {leading: false, trailing: true}) { // in basic debounce, we kept only timerId // here, we will keep lastArgs too as we trailing function call with last arguments let timerId = null; let lastArgs = null; // if both leading and trailing are false then do nothing. if(!option.leading &amp;&amp; !option.trailing) return () =&gt; null; return function debounced(...args) { // if timer is over and leading is true // then immediately call supplied function // else capture arguments in lastArgs if(!timerId &amp;&amp; option.leading) { func.apply(this, args); } else { lastArgs = args; } // clear timer so that next call is exactly after `wait` time clearTimeout(timerId); timerId = setTimeout(() =&gt; { // invoke only if lastArgs is present and trailing is true if(option.trailing &amp;&amp; lastArgs) func.apply(this, lastArgs); // reset variables as they need to restart new life after calling this function lastArgs = null; timerId = null; }, wait); }}</code></pre>
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This is a follow up on 6. implement basic debounce(), please refer to it for detailed explanation. In this problem, you are asked to implement an enha…