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Debounce a Function

Debounce wraps a callback so it runs only after activity stops for a set wait, collapsing bursts of calls into a single trailing invocation.

JavascriptData Integrity

Code

snippet
export function debounce(fn, waitMs) {
  if (typeof fn !== "function") throw new TypeError("fn must be a function");
  if (waitMs < 0) throw new RangeError("waitMs must be >= 0");
  let timer = null;
  let lastArgs = null;
  return function debounced(...args) {
    lastArgs = args;
    if (timer !== null) clearTimeout(timer);
    timer = setTimeout(() => {
      timer = null;
      fn.apply(this, lastArgs);
    }, waitMs);
  };
}

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