Added isFreightContainerID validator

README.md

@@ -114,6 +114,7 @@ Validator                               | Description
 **isEthereumAddress(str)**              | check if the string is an [Ethereum](https://ethereum.org/) address using basic regex. 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` determine 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`).
+**isFreightContainerID(str)**                      | alias for `isISO6346`, check if the string is a valid [ISO 6346](https://en.wikipedia.org/wiki/ISO_6346) shipping container identification.
 **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 `['md4', 'md5', 'sha1', 'sha256', 'sha384', 'sha512', 'ripemd128', 'ripemd160', 'tiger128', 'tiger160', 'tiger192', 'crc32', 'crc32b']`
@@ -129,6 +130,7 @@ Validator                               | Description
 **isIPRange(str [, version])**          | check if the string is an IP Range (version 4 or 6).
 **isISBN(str [, version])**             | check if the string is an ISBN (version 10 or 13).
 **isISIN(str)**                         | check if the string is an [ISIN][ISIN] (stock/security identifier).
+**isISO6346(str)**                      | check if the string is a valid [ISO 6346](https://en.wikipedia.org/wiki/ISO_6346) shipping container identification.
 **isISO6391(str)**                      | check if the string is a valid [ISO 639-1](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes) language code.
 **isISO8601(str [, options])**          | check if the string is a valid [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) date. <br/>`options` is an object which defaults to `{ strict: false, strictSeparator: false }`. If `strict` is true, date strings with invalid dates like `2009-02-29` will be invalid. If `strictSeparator` is true, date strings with date and time separated by anything other than a T will be invalid.
 **isISO31661Alpha2(str)**               | check if the string is a valid [ISO 3166-1 alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2) officially assigned country code.

src/index.js

@@ -87,6 +87,7 @@ import isCurrency from './lib/isCurrency';
 
 import isBtcAddress from './lib/isBtcAddress';
 
+import { isISO6346, isFreightContainerID } from './lib/isISO6346';
 import isISO6391 from './lib/isISO6391';
 import isISO8601 from './lib/isISO8601';
 import isRFC3339 from './lib/isRFC3339';
@@ -198,6 +199,8 @@ const validator = {
   isEthereumAddress,
   isCurrency,
   isBtcAddress,
+  isISO6346,
+  isFreightContainerID,
   isISO6391,
   isISO8601,
   isRFC3339,

src/lib/isISO6346.js

@@ -0,0 +1,37 @@
+import assertString from './util/assertString';
+
+// https://en.wikipedia.org/wiki/ISO_6346
+// according to ISO6346 standard, checksum digit is mandatory for freight container but recommended
+// for other container types (J and Z)
+const isISO6346Str = /^[A-Z]{3}(U[0-9]{7})|([J,Z][0-9]{6,7})$/;
+const isDigit = /^[0-9]$/;
+
+export function isISO6346(str) {
+  assertString(str);
+
+  str = str.toUpperCase();
+
+  if (!isISO6346Str.test(str)) return false;
+
+  if (str.length === 11) {
+    let sum = 0;
+    for (let i = 0; i < str.length - 1; i++) {
+      if (!isDigit.test(str[i])) {
+        let convertedCode;
+        const letterCode = str.charCodeAt(i) - 55;
+        if (letterCode < 11) convertedCode = letterCode;
+        else if (letterCode >= 11 && letterCode <= 20) convertedCode = 12 + (letterCode % 11);
+        else if (letterCode >= 21 && letterCode <= 30) convertedCode = 23 + (letterCode % 21);
+        else convertedCode = 34 + (letterCode % 31);
+        sum += convertedCode * (2 ** i);
+      } else sum += str[i] * (2 ** i);
+    }
+
+    const checkSumDigit = sum % 11;
+    return Number(str[str.length - 1]) === checkSumDigit;
+  }
+
+  return true;
+}
+
+export const isFreightContainerID = isISO6346;

test/validators.js

@@ -11837,6 +11837,57 @@ describe('Validators', () => {
     });
   });
 
+  it('should validate ISO6346 shipping containerID', () => {
+    test({
+      validator: 'isISO6346',
+      valid: [
+        'HLXU2008419',
+        'TGHU7599330',
+        'ECMU4657496',
+        'MEDU6246078',
+        'YMLU2809976',
+        'MRKU0046221',
+        'EMCU3811879',
+        'OOLU8643084',
+        'HJCU1922713',
+        'QJRZ123456',
+      ],
+      invalid: [
+        'OOLU1922713',
+        'HJCU1922413',
+        'FCUI985619',
+        'ECMJ4657496',
+        'TBJA7176445',
+        'AFFU5962593',
+      ],
+    });
+  });
+  it('should validate ISO6346 shipping containerID', () => {
+    test({
+      validator: 'isFreightContainerID',
+      valid: [
+        'HLXU2008419',
+        'TGHU7599330',
+        'ECMU4657496',
+        'MEDU6246078',
+        'YMLU2809976',
+        'MRKU0046221',
+        'EMCU3811879',
+        'OOLU8643084',
+        'HJCU1922713',
+        'QJRZ123456',
+      ],
+      invalid: [
+        'OOLU1922713',
+        'HJCU1922413',
+        'FCUI985619',
+        'ECMJ4657496',
+        'TBJA7176445',
+        'AFFU5962593',
+      ],
+    });
+  });
+
   // EU-UK valid numbers sourced from https://ec.europa.eu/taxation_customs/tin/specs/FS-TIN%20Algorithms-Public.docx or constructed by @tplessas.
   it('should validate taxID', () => {
     test({