feat(isIdentityCard): add 'LK' (Sri Lanka) locale (#1786)

* Implement isIdentityCard LK(Sri Lanka) locale

* Add tests for isIdentityCard LK locale

* Update README.md for the isIdentityCard LK locale

* Change let to const

Co-authored-by: Sarhan Aissi <tux-tn@users.noreply.github.com>

Co-authored-by: Sarhan Aissi <tux-tn@users.noreply.github.com>

README.md

@@ -115,7 +115,7 @@ Validator                               | Description
 **isHexColor(str)**                     | check if the string is a hexadecimal color.
 **isHSL(str)**                          | check if the string is an HSL (hue, saturation, lightness, optional alpha) color based on [CSS Colors Level 4 specification](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value).<br/><br/>Comma-separated format supported. Space-separated format supported with the exception of a few edge cases (ex: `hsl(200grad+.1%62%/1)`).
 **isIBAN(str)**                         | check if a string is a IBAN (International Bank Account Number).
-**isIdentityCard(str [, locale])**      | check if the string is a valid identity card code.<br/><br/>`locale` is one of `['PL', 'ES', 'IN', 'IT', 'IR', 'MZ', 'NO', 'TH', 'zh-TW', 'he-IL', 'ar-LY', 'ar-TN', 'zh-CN']` OR `'any'`. If 'any' is used, function will check if any of the locals match.<br/><br/>Defaults to 'any'.
+**isIdentityCard(str [, locale])**      | check if the string is a valid identity card code.<br/><br/>`locale` is one of `['LK', 'PL', 'ES', 'IN', 'IT', 'IR', 'MZ', 'NO', 'TH', 'zh-TW', 'he-IL', 'ar-LY', 'ar-TN', 'zh-CN']` OR `'any'`. If 'any' is used, function will check if any of the locals match.<br/><br/>Defaults to 'any'.
 **isIMEI(str [, options]))**                         | check if the string is a valid IMEI number. Imei should be of format `###############` or `##-######-######-#`.<br/><br/>`options` is an object which can contain the keys `allow_hyphens`. Defaults to first format . If allow_hyphens is set to true, the validator will validate the second format.
 **isIn(str, values)**                   | check if the string is in a array of allowed values.
 **isInt(str [, options])**              | check if the string is an integer.<br/><br/>`options` is an object which can contain the keys `min` and/or `max` to check the integer is within boundaries (e.g. `{ min: 10, max: 99 }`). `options` can also contain the key `allow_leading_zeroes`, which when set to false will disallow integer values with leading zeroes (e.g. `{ allow_leading_zeroes: false }`). Finally, `options` can contain the keys `gt` and/or `lt` which will enforce integers being greater than or less than, respectively, the value provided (e.g. `{gt: 1, lt: 4}` for a number between 1 and 4).

src/lib/isIdentityCard.js

@@ -160,6 +160,14 @@ const validators = {
     }
     return str[12] === ((11 - (sum % 11)) % 10).toString();
   },
+  LK: (str) => {
+    const old_nic = /^[1-9]\d{8}[vx]$/i;
+    const new_nic = /^[1-9]\d{11}$/i;
+
+    if (str.length === 10 && old_nic.test(str)) return true;
+    else if (str.length === 12 && new_nic.test(str)) return true;
+    return false;
+  },
   'he-IL': (str) => {
     const DNI = /^\d{9}$/;
 

test/validators.js

@@ -4751,6 +4751,27 @@ describe('Validators', () => {
 
   it('should validate identity cards', () => {
     const fixtures = [
+      {
+        locale: 'LK',
+        valid: [
+          '722222222v',
+          '722222222V',
+          '993151225x',
+          '993151225X',
+          '188888388x',
+          '935632124V',
+          '199931512253',
+          '200023125632',
+        ],
+        invalid: [
+          '023125648V',
+          '023345621v',
+          '021354211X',
+          '055321231x',
+          '02135465462',
+          '199931512253X',
+        ],
+      },
       {
         locale: 'PL',
         valid: [