fix(isEmail): fixed isFQDN's ignore_max_length check (#2170)

fix(isEmail): fixed `isFQDN` still checking email length when
 `ignore_max_length` is `true`

profnandaa: clean-up #2128

---------

Co-authored-by: Said Akhmedbayev <said.akh@gmail.com>
Co-authored-by: Said Akhmedbayev <said.akhmedbayev@accenture.com>

README.md

@@ -113,7 +113,7 @@ Validator                               | Description
 **isEmpty(str [, options])**            | check if the string has a length of zero.<br/><br/>`options` is an object which defaults to `{ ignore_whitespace: false }`.
 **isEthereumAddress(str)**              | check if the string is an [Ethereum][Ethereum] address. Does not validate address checksums.
 **isFloat(str [, options])**            | check if the string is a float.<br/><br/>`options` is an object which can contain the keys `min`, `max`, `gt`, and/or `lt` to validate the float is within boundaries (e.g. `{ min: 7.22, max: 9.55 }`) it also has `locale` as an option.<br/><br/>`min` and `max` are equivalent to 'greater or equal' and 'less or equal', respectively while `gt` and `lt` are their strict counterparts.<br/><br/>`locale` determines the decimal separator and is one of `['ar', 'ar-AE', 'ar-BH', 'ar-DZ', 'ar-EG', 'ar-IQ', 'ar-JO', 'ar-KW', 'ar-LB', 'ar-LY', 'ar-MA', 'ar-QA', 'ar-QM', 'ar-SA', 'ar-SD', 'ar-SY', 'ar-TN', 'ar-YE', 'bg-BG', 'cs-CZ', 'da-DK', 'de-DE', 'en-AU', 'en-GB', 'en-HK', 'en-IN', 'en-NZ', 'en-US', 'en-ZA', 'en-ZM', 'es-ES', 'fr-CA', 'fr-FR', 'hu-HU', 'it-IT', 'nb-NO', 'nl-NL', 'nn-NO', 'pl-PL', 'pt-BR', 'pt-PT', 'ru-RU', 'sl-SI', 'sr-RS', 'sr-RS@latin', 'sv-SE', 'tr-TR', 'uk-UA']`. Locale list is `validator.isFloatLocales`.
-**isFQDN(str [, options])**             | check if the string is a fully qualified domain name (e.g. domain.com).<br/><br/>`options` is an object which defaults to `{ require_tld: true, allow_underscores: false, allow_trailing_dot: false, allow_numeric_tld: false, allow_wildcard: false }`. If `allow_wildcard` is set to true, the validator will allow domain starting with `*.` (e.g. `*.example.com` or `*.shop.example.com`).
+**isFQDN(str [, options])**             | check if the string is a fully qualified domain name (e.g. domain.com).<br/><br/>`options` is an object which defaults to `{ require_tld: true, allow_underscores: false, allow_trailing_dot: false, allow_numeric_tld: false, allow_wildcard: false, ignore_max_length: false }`. If `allow_wildcard` is set to true, the validator will allow domain starting with `*.` (e.g. `*.example.com` or `*.shop.example.com`).
 **isFullWidth(str)**                    | check if the string contains any full-width chars.
 **isHalfWidth(str)**                    | check if the string contains any half-width chars.
 **isHash(str, algorithm)**              | check if the string is a hash of type algorithm.<br/><br/>Algorithm is one of `['crc32', 'crc32b', 'md4', 'md5', 'ripemd128', 'ripemd160', 'sha1', 'sha256', 'sha384', 'sha512', 'tiger128', 'tiger160', 'tiger192']`.

src/lib/isEmail.js

@@ -139,7 +139,10 @@ export default function isEmail(str, options) {
     return false;
   }
 
-  if (!isFQDN(domain, { require_tld: options.require_tld })) {
+  if (!isFQDN(domain, {
+    require_tld: options.require_tld,
+    ignore_max_length: options.ignore_max_length,
+  })) {
     if (!options.allow_ip_domain) {
       return false;
     }

src/lib/isFQDN.js

@@ -7,6 +7,7 @@ const default_fqdn_options = {
   allow_trailing_dot: false,
   allow_numeric_tld: false,
   allow_wildcard: false,
+  ignore_max_length: false,
 };
 
 export default function isFQDN(str, options) {
@@ -48,7 +49,7 @@ export default function isFQDN(str, options) {
   }
 
   return parts.every((part) => {
-    if (part.length > 63) {
+    if (part.length > 63 && !options.ignore_max_length) {
       return false;
     }
 

test/validators.test.js

@@ -278,6 +278,15 @@ describe('Validators', () => {
       ],
       invalid: [],
     });
+
+    test({
+      validator: 'isEmail',
+      args: [{ ignore_max_length: true }],
+      valid: [
+        'Deleted-user-id-19430-Team-5051deleted-user-id-19430-team-5051XXXXXX@Deleted-user-id-19430-Team-5051deleted-user-id-19430-team-5051XXXXXX.com',
+      ],
+      invalid: [],
+    });
   });
 
   it('should not validate email addresses with denylisted domains', () => {