/**
 * Toolkit - Email Validation
 * 
 * Email validation utilities.
 */

/**
 * Validate email address format
 */
export function isValidEmail(email: string): boolean {
  // RFC 5322 simplified regex for email validation
  const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
  return emailRegex.test(email);
}

/**
 * Extract domain from email address
 */
export function getEmailDomain(email: string): string | null {
  const match = email.match(/@(.+)$/);
  return match ? match[1] : null;
}

/**
 * Normalize email address (lowercase, trim)
 */
export function normalizeEmail(email: string): string {
  return email.trim().toLowerCase();
}