export function getTld(domain) { if (domain.includes(".")) { domain = domain.split(".")[domain.split(".").length - 1]; } return domain; } export function getSld(domain) { if (domain.includes(".")) { domain = domain .split(".") .slice(0, domain.split(".").length - 1) .join("."); } return domain; } export function isIp(ip) { return /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ip); } export function isDomain(domain) { return /(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]/.test(domain); }