// Valid hostname per RFC 1123: labels of letters, digits and hyphens// (no leading/trailing hyphen), optionally separated by dots. Underscores are rejected// because Let's Encrypt refuses to issue certificates for them.export const VALID_HOSTNAME_REGEX = /^(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)*[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?$/;export const INVALID_HOSTNAME_MESSAGE = "Invalid domain name. Use only letters, numbers, hyphens and dots (e.g. example.com). Underscores are not allowed.";
// Valid hostname per RFC 1123: labels of letters, digits and hyphens
// (no leading/trailing hyphen), optionally separated by dots. Underscores are rejected
// because Let's Encrypt refuses to issue certificates for them.
export const VALID_HOSTNAME_REGEX =
/^(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)*[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?$/;
export const INVALID_HOSTNAME_MESSAGE =
"Invalid domain name. Use only letters, numbers, hyphens and dots (e.g. example.com). Underscores are not allowed.";