fix(validators): fix isdate format validation

Author: flymans

src/lib/isDate.js

@@ -7,7 +7,7 @@ const default_date_options = {
 };
 
 function isValidFormat(format) {
-  return /(^(y{4}|y{2})[\/-](m{1,2})[\/-](d{1,2})$)|(^(m{1,2})[\/-](d{1,2})[\/-]((y{4}|y{2})$))|(^(d{1,2})[\/-](m{1,2})[\/-]((y{4}|y{2})$))/gi.test(format);
+  return /(^(y{4}|y{2})[.\/-](m{1,2})[.\/-](d{1,2})$)|(^(m{1,2})[.\/-](d{1,2})[.\/-]((y{4}|y{2})$))|(^(d{1,2})[.\/-](m{1,2})[.\/-]((y{4}|y{2})$))/gi.test(format);
 }
 
 function zip(date, format) {

test/validators.js

@@ -10674,6 +10674,25 @@ describe('Validators', () => {
         '2020/03-15',
       ],
     });
+    test({
+      validator: 'isDate',
+      args: [{ format: 'MM.DD.YYYY', delimiters: ['.'], strictMode: true }],
+      valid: [
+        '01.15.2020',
+        '02.15.2014',
+        '03.15.2014',
+        '02.29.2020',
+      ],
+      invalid: [
+        '2014-02-15',
+        '2020-02-29',
+        '15-07/2002',
+        new Date(),
+        new Date([2014, 2, 15]),
+        new Date('2014-03-15'),
+        '29.02.2020',
+      ],
+    });
   });
   it('should be valid license plate', () => {
     test({