<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 * @returns {(...args:any[]) =&gt; any} */function throttle(func, wait) { // your code here let waiting = false; let lastArgs = null; let exContext = null; const helper = () =&gt; { setTimeout(() =&gt; { if(lastArgs !== null) { func.apply(exContext, lastArgs); lastArgs = null; helper(); } else { waiting = false; } }, wait); } return function(...args) { exContext = this; if(!waiting) { func.apply(exContext, args); waiting = true; helper(); } else { lastArgs = args; } }}</code></pre>

The test cases are inadequate. Solution with recursion which will work for missed cases and maintains execution context.

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Throttling is a common technique used in Web apps, in most cases using lodash solutionwould be a good choice. In case you forgot, throttle(func, delay…