Implement debounce

Implement debounce(fn, delay)

One of the most common practical interview questions — and one you'll actually reach for in real UI code (search-as-you-type, resize handlers).

Write a function debounce(fn, delay) that returns a new function. Calling the returned function repeatedly should only invoke fn once, after delay milliseconds have passed since the last call — every call before that resets the timer.

const search = debounce((query) => console.log("searching:", query), 300);
search("h");
search("he");
search("hel"); // only THIS call actually fires, 300ms after it happens

Requirements:

• The returned function should forward its arguments to fn.
• Calling it again before delay has elapsed should reset the wait — not queue a second call.