Deep Clone (Object/Array/Date/RegExp Support)

/**
 * Deep clone function
 * @param target Value to be cloned
 * @returns New cloned value
 */
function deepClone<T>(target: T): T {
  // Return primitive types directly
  if (target === null || typeof target !== 'object') return target;

  // Handle Date objects
  if (target instanceof Date) return new Date(target.getTime()) as T;
  // Handle RegExp objects
  if (target instanceof RegExp) return new RegExp(target.source, target.flags) as T;

  // Handle arrays/objects
  const cloneTarget = Array.isArray(target) ? [] : {} as T;
  for (const key in target) {
    if (Object.prototype.hasOwnProperty.call(target, key)) {
      cloneTarget[key] = deepClone(target[key]);
    }
  }
  return cloneTarget;
}

// Usage Example
const original = { a: 1, b: { c: 2 }, d: [3, 4], e: new Date() };
const copy = deepClone(original);
copy.b.c = 100;
console.log(original.b.c); // 2 (original data remains unchanged)