Throttle Function

/**
 * Throttle function implementation
 * @param fn Function to throttle
 * @param delay Throttle interval in milliseconds
 * @returns Throttled function
 */
function throttle<T extends (...args: any[]) => void>(fn: T, delay: number): T {
  let lastCall = 0;
  return function(this: ThisParameterType<T>, ...args: Parameters<T>) {
    const now = Date.now();
    if (now - lastCall >= delay) {
      lastCall = now;
      fn.apply(this, args);
    }
  } as T;
}

// Usage Example
window.addEventListener('scroll', throttle(() => {
  console.log('Scroll event processed');
}, 200));