fix(isIdentityCard): accept province 8 (AJK) and female gender digit 0 for PK CNIC

src/lib/isIdentityCard.js

@@ -415,8 +415,12 @@ const validators = {
     }, 0);
   },
   PK: (str) => {
-    // Pakistani National Identity Number CNIC is 13 digits
-    const CNIC = /^[1-7][0-9]{4}-[0-9]{7}-[1-9]$/;
+    // Pakistani National Identity Number CNIC is 13 digits in the form
+    // XXXXX-XXXXXXX-X. The first digit is the province/administrative-unit
+    // code 1-8 (8 = Azad Kashmir) and the last digit encodes gender, using
+    // odd digits for men and even digits (including 0) for women.
+    // https://en.wikipedia.org/wiki/CNIC_(Pakistan)
+    const CNIC = /^[1-8][0-9]{4}-[0-9]{7}-[0-9]$/;
 
     // sanitize user input
     const sanitized = str.trim();

test/validators.test.js

@@ -6685,6 +6685,10 @@ describe('Validators', () => {
           '63456-8765432-8',
           '55672-1234567-5',
           '21234-9876543-6',
+          '82345-2345678-7',
+          '81234-1234567-3',
+          '45504-4185771-0',
+          '34543-2323471-0',
         ],
         invalid: [
           '08000-1234567-5',