not sytax es6

lib/es6_codemeli.js

@@ -0,0 +1,62 @@
+/**
+ * @typedef {Object} CodeMeli
+ * @property code
+ * @property parity
+ * @property city_code
+ * @property uid
+ */
+
+/**
+ *
+ * @param {String|Number} code - Input national number value. it can be string or number
+ * @param {Boolean} [returnObj] - If returnObj is true (defaults to `false`) function will return an object.
+ * @returns {CodeMeli|Object}
+ */
+function codemeli(code, returnObj) {
+    if (!code || code === '') return null;
+    code = String(code);
+    // Try to parse it as a number
+    let num = parseInt(code.trim());
+    if (!num) return null;
+    // Convert back to string
+    let _code = String(num);
+    if (_code.length < 8) {
+        return null;
+    }
+    while (_code.length < 10)
+        _code = '0' + _code;
+    // xxxxxxxxxx is invalid pattern!
+    let same = true;
+    for (let i = 0; i < 10; i++)
+        if (_code[i] !== _code[0]) {
+            same = false;
+            break;
+        }
+    if (same) {
+        return null;
+    }
+    // Validate
+    let sum = 0;
+    for (let i = 10; i > 0; i--)
+        sum += parseInt(_code[10-i])*i;
+    if ((sum = sum % 11)>= 2) {sum = 11 - sum};
+
+    if (_code.substr(9, 1) !== sum + '') {
+        return null;
+    }
+    if (returnObj) {
+        return {
+            code: _code,
+            parity: _code[9],
+            city_code: _code.substr(0, 2),
+            uid: _code.substr(2, 7)
+        }
+    }
+
+    return _code;
+}
+if (typeof module !== 'undefined') {
+    module.exports = codemeli;
+} else if (typeof window !== 'undefined') {
+    window.codemeli = codemeli;
+}