feat(isPostalCode): add BD locale (#2551)

Co-authored-by: Rubin Bhandari <[email protected]>

Author: tanvirrb

README.md

@@ -157,7 +157,7 @@ Validator                               | Description
 **isOctal(str)**                        | check if the string is a valid octal number.
 **isPassportNumber(str, countryCode)**    | check if the string is a valid passport number.<br/><br/>`countryCode` is one of `['AM', 'AR', 'AT', 'AU', 'AZ', 'BE', 'BG', 'BY', 'BR', 'CA', 'CH', 'CN', 'CY', 'CZ', 'DE', 'DK', 'DZ', 'EE', 'ES', 'FI', 'FR', 'GB', 'GR', 'HR', 'HU', 'IE', 'IN', 'IR', 'ID', 'IS', 'IT', 'JM', 'JP', 'KR', 'KZ', 'LI', 'LT', 'LU', 'LV', 'LY', 'MT', 'MX', 'MY', 'MZ', 'NL', 'NZ', 'PH', 'PK', 'PL', 'PT', 'RO', 'RU', 'SE', 'SL', 'SK', 'TH', 'TR', 'UA', 'US', 'ZA']`.  Locale list is `validator.passportNumberLocales`.
 **isPort(str)**                         | check if the string is a valid port number.
-**isPostalCode(str, locale)**           | check if the string is a postal code.<br/><br/>`locale` is one of `['AD', 'AT', 'AU', 'AZ', 'BA', 'BE', 'BG', 'BR', 'BY', 'CA', 'CH', 'CN', 'CO', 'CZ', 'DE', 'DK', 'DO', 'DZ', 'EE', 'ES', 'FI', 'FR', 'GB', 'GR', 'HR', 'HT', 'HU', 'ID', 'IE', 'IL', 'IN', 'IR', 'IS', 'IT', 'JP', 'KE', 'KR', 'LI', 'LK', 'LT', 'LU', 'LV', 'MG', 'MT', 'MX', 'MY', 'NL', 'NO', 'NP', 'NZ', 'PK', 'PL', 'PR', 'PT', 'RO', 'RU', 'SA', 'SE', 'SG', 'SI', 'SK', 'TH', 'TN', 'TW', 'UA', 'US', 'ZA', 'ZM']` OR `'any'`. If 'any' is used, function will check if any of the locales match. Locale list is `validator.isPostalCodeLocales`.
+**isPostalCode(str, locale)**           | check if the string is a postal code.<br/><br/>`locale` is one of `['AD', 'AT', 'AU', 'AZ', 'BA', 'BD', 'BE', 'BG', 'BR', 'BY', 'CA', 'CH', 'CN', 'CO', 'CZ', 'DE', 'DK', 'DO', 'DZ', 'EE', 'ES', 'FI', 'FR', 'GB', 'GR', 'HR', 'HT', 'HU', 'ID', 'IE', 'IL', 'IN', 'IR', 'IS', 'IT', 'JP', 'KE', 'KR', 'LI', 'LK', 'LT', 'LU', 'LV', 'MG', 'MT', 'MX', 'MY', 'NL', 'NO', 'NP', 'NZ', 'PK', 'PL', 'PR', 'PT', 'RO', 'RU', 'SA', 'SE', 'SG', 'SI', 'SK', 'TH', 'TN', 'TW', 'UA', 'US', 'ZA', 'ZM']` OR `'any'`. If 'any' is used, function will check if any of the locales match. Locale list is `validator.isPostalCodeLocales`.
 **isRFC3339(str)**                      | check if the string is a valid [RFC 3339][RFC 3339] date.
 **isRgbColor(str [,options])**                     | check if the string is a rgb or rgba color.<br/></br>`options` is an object with the following properties<br/><br/>`includePercentValues` defaults to `true`. If you don't want to allow to set `rgb` or `rgba` values with percents, like `rgb(5%,5%,5%)`, or `rgba(90%,90%,90%,.3)`, then set it to false.<br/><br/>`allowSpaces` defaults to `true`, which prohibits whitespace. If set to false, whitespace between color values is allowed, such as `rgb(255, 255, 255)` or even `rgba(255,       128,        0,      0.7)`.
 **isSemVer(str)**                       | check if the string is a Semantic Versioning Specification (SemVer).

src/lib/isPostalCode.js

@@ -12,6 +12,7 @@ const patterns = {
   AU: fourDigit,
   AZ: /^AZ\d{4}$/,
   BA: /^([7-8]\d{4}$)/,
+  BD: /^([1-8][0-9]{3}|9[0-4][0-9]{2})$/,
   BE: fourDigit,
   BG: fourDigit,
   BR: /^\d{5}-?\d{3}$/,

test/validators.test.js

@@ -12418,7 +12418,41 @@ describe('Validators', () => {
           '2017',
           '0800',
         ],
-      }, {
+      },
+      {
+        locale: 'BD',
+        valid: [
+          '1000',
+          '1200',
+          '1300',
+          '1400',
+          '1500',
+          '2000',
+          '3000',
+          '4000',
+          '5000',
+          '6000',
+          '7000',
+          '8000',
+          '9000',
+          '9400',
+          '9499',
+        ],
+        invalid: [
+          '0999',
+          '9500',
+          '10000',
+          '12345',
+          '123',
+          '123456',
+          'abcd',
+          '123a',
+          'a123',
+          '12 34',
+          '12-34',
+        ],
+      },
+      {
         locale: 'BY',
         valid: [
           '225320',