@bernotieno/mini-framework/src/utils/function.js

A lightweight JavaScript framework built from scratch with zero dependencies

/**
 * Function Utilities
 * Higher-order functions and function manipulation utilities
 */

/**
 * Debounce a function
 */
export function debounce(func, wait, immediate = false) {
  let timeout;
  
  return function executedFunction(...args) {
    const later = () => {
      timeout = null;
      if (!immediate) func.apply(this, args);
    };
    
    const callNow = immediate && !timeout;
    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
    
    if (callNow) func.apply(this, args);
  };
}

/**
 * Throttle a function
 */
export function throttle(func, limit) {
  let inThrottle;
  
  return function(...args) {
    if (!inThrottle) {
      func.apply(this, args);
      inThrottle = true;
      setTimeout(() => inThrottle = false, limit);
    }
  };
}