Debounce & Throttle

debounce.js

function debounce(fn, wait) {
  let timerId;
  
  return function debounced(...args) {
    clearTimeout(timerId);

    const that = this;
    timerId = setTimeout(() => fn.apply(that, args), wait);
  };
}

throttle.js

function throttle(fn, wait) {
  let shouldThrottle = false;
  
  return function throttled(...args) {
    if (shouldThrottle) return;
    
    shouldThrottle = true;
    setTimeout(() => {
      shouldThrottle = false;
    }, wait);
    
    fn.apply(this, args);
  }
}