fix(isDate): enhance Date declaration compatibility across multiple environments (#2231)

Author: CiprianS

src/lib/isDate.js

@@ -47,7 +47,25 @@ export default function isDate(input, options) {
       dateObj[formatWord.charAt(0)] = dateWord;
     }
 
-    return new Date(`${dateObj.m}/${dateObj.d}/${dateObj.y}`).getDate() === +dateObj.d;
+    let fullYear = dateObj.y;
+
+    if (dateObj.y.length === 2) {
+      const parsedYear = parseInt(dateObj.y, 10);
+
+      if (isNaN(parsedYear)) {
+        return false;
+      }
+
+      const currentYearLastTwoDigits = new Date().getFullYear() % 100;
+
+      if (parsedYear < currentYearLastTwoDigits) {
+        fullYear = `20${dateObj.y}`;
+      } else {
+        fullYear = `19${dateObj.y}`;
+      }
+    }
+
+    return new Date(`${fullYear}-${dateObj.m}-${dateObj.d}`).getDate() === +dateObj.d;
   }
 
   if (!options.strictMode) {

test/validators.test.js

@@ -12803,6 +12803,7 @@ describe('Validators', () => {
         '15/7/2002',
         '15-7-2002',
         '15/07-02',
+        '30/04/--',
       ],
     });
     test({
@@ -12817,6 +12818,7 @@ describe('Validators', () => {
         '15/7/02',
         '15-7-02',
         '5/7-02',
+        '3/4/aa',
       ],
     });
     test({