Add zh-TW National ID Rule

README.md

@@ -100,7 +100,7 @@ Validator                               | Description
 **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']`
 **isHexColor(str)**                     | check if the string is a hexadecimal color.
 **isHexadecimal(str)**                  | check if the string is a hexadecimal number.
-**isIdentityCard(str [, locale])**      | check if the string is a valid identity card code.<br/><br/>`locale` is one of `['ES']` 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 `['ES', 'zh-TW']` OR `'any'`. If 'any' is used, function will check if any of the locals match.<br/><br/>Defaults to 'any'.
 **isIP(str [, version])**               | check if the string is an IP (version 4 or 6).
 **isIPRange(str)**                      | check if the string is an IP Range(version 4 only).
 **isISBN(str [, version])**             | check if the string is an ISBN (version 10 or 13).

lib/isIdentityCard.js

@@ -31,6 +31,50 @@ var validators = {
       return charsValue[char];
     });
     return sanitized.endsWith(controlDigits[number % 23]);
+  },
+  'zh-TW': function zhTW(str) {
+    var ALPHABET_CODES = {
+      A: 10,
+      B: 11,
+      C: 12,
+      D: 13,
+      E: 14,
+      F: 15,
+      G: 16,
+      H: 17,
+      I: 34,
+      J: 18,
+      K: 19,
+      L: 20,
+      M: 21,
+      N: 22,
+      O: 35,
+      P: 23,
+      Q: 24,
+      R: 25,
+      S: 26,
+      T: 27,
+      U: 28,
+      V: 29,
+      W: 32,
+      X: 30,
+      Y: 31,
+      Z: 33
+    };
+    var sanitized = str.trim().toUpperCase();
+    if (!/^[A-Z][0-9]{9}$/.test(sanitized)) return false;
+    return Array.from(sanitized).reduce(function (sum, number, index) {
+      if (index === 0) {
+        var code = ALPHABET_CODES[number];
+        return code % 10 * 9 + Math.floor(code / 10);
+      }
+
+      if (index === 9) {
+        return (10 - sum % 10 - Number(number)) % 10 === 0;
+      }
+
+      return sum + Number(number) * (9 - index);
+    }, 0);
   }
 };
 

src/lib/isIdentityCard.js

@@ -30,6 +30,54 @@ const validators = {
 
     return sanitized.endsWith(controlDigits[number % 23]);
   },
+  'zh-TW': (str) => {
+    const ALPHABET_CODES = {
+      A: 10,
+      B: 11,
+      C: 12,
+      D: 13,
+      E: 14,
+      F: 15,
+      G: 16,
+      H: 17,
+      I: 34,
+      J: 18,
+      K: 19,
+      L: 20,
+      M: 21,
+      N: 22,
+      O: 35,
+      P: 23,
+      Q: 24,
+      R: 25,
+      S: 26,
+      T: 27,
+      U: 28,
+      V: 29,
+      W: 32,
+      X: 30,
+      Y: 31,
+      Z: 33,
+    };
+
+    const sanitized = str.trim().toUpperCase();
+
+    if (!/^[A-Z][0-9]{9}$/.test(sanitized)) return false;
+
+    return Array.from(sanitized).reduce((sum, number, index) => {
+      if (index === 0) {
+        const code = ALPHABET_CODES[number];
+
+        return ((code % 10) * 9) + Math.floor(code / 10);
+      }
+
+      if (index === 9) {
+        return ((10 - (sum % 10)) - Number(number)) % 10 === 0;
+      }
+
+      return sum + (Number(number) * (9 - index));
+    }, 0);
+  },
 };
 
 export default function isIdentityCard(str, locale = 'any') {

validator.js

@@ -1133,6 +1133,50 @@ var validators = {
       return charsValue[_char];
     });
     return sanitized.endsWith(controlDigits[number % 23]);
+  },
+  'zh-TW': function zhTW(str) {
+    var ALPHABET_CODES = {
+      A: 10,
+      B: 11,
+      C: 12,
+      D: 13,
+      E: 14,
+      F: 15,
+      G: 16,
+      H: 17,
+      I: 34,
+      J: 18,
+      K: 19,
+      L: 20,
+      M: 21,
+      N: 22,
+      O: 35,
+      P: 23,
+      Q: 24,
+      R: 25,
+      S: 26,
+      T: 27,
+      U: 28,
+      V: 29,
+      W: 32,
+      X: 30,
+      Y: 31,
+      Z: 33
+    };
+    var sanitized = str.trim().toUpperCase();
+    if (!/^[A-Z][0-9]{9}$/.test(sanitized)) return false;
+    return Array.from(sanitized).reduce(function (sum, number, index) {
+      if (index === 0) {
+        var code = ALPHABET_CODES[number];
+        return code % 10 * 9 + Math.floor(code / 10);
+      }
+
+      if (index === 9) {
+        return (10 - sum % 10 - Number(number)) % 10 === 0;
+      }
+
+      return sum + Number(number) * (9 - index);
+    }, 0);
   }
 };
 function isIdentityCard(str) {