/**
 * Check whether it's a company email address.
 * @param {string} email - The email address to validate.
 * @returns {boolean}
 */
 export function isCompanyEmail(email: string): boolean;

/**
 * Check whether it's a company email domain.
 * @param {string} domain - The email domain to validate.
 * @returns {boolean}
 */
 export function isCompanyDomain(domain: string): boolean;