From 8a49a1746e60da951b7e177c8f5d631886df96c5 Mon Sep 17 00:00:00 2001
From: sumit joshi <47482270+Sumit-tech-joshi@users.noreply.github.com>
Date: Sat, 23 Mar 2024 18:14:39 -0700
Subject: [PATCH 1/3] Add validation Hyphen before year is not allowed

---
 src/lib/isDate.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/lib/isDate.js b/src/lib/isDate.js
index f0b28917a..dc69b3bc1 100644
--- a/src/lib/isDate.js
+++ b/src/lib/isDate.js
@@ -22,7 +22,7 @@ function zip(date, format) {
 }
 
 export default function isDate(input, options) {
-  if (typeof options === 'string') { // Allow backward compatbility for old format isDate(input [, format])
+  if (typeof options === 'string') { // Allow backward compatibility for old format isDate(input [, format])
     options = merge({ format: options }, default_date_options);
   } else {
     options = merge(options, default_date_options);
@@ -49,6 +49,11 @@ export default function isDate(input, options) {
 
     let fullYear = dateObj.y;
 
+    // Check if the year starts with a hyphen
+    if (fullYear.startsWith('-')) {
+      return false; // Hyphen before year is not allowed
+    }
+
     if (dateObj.y.length === 2) {
       const parsedYear = parseInt(dateObj.y, 10);
 

From 309c958a5a80e3dbaa3a6c7d44119dac46454ac9 Mon Sep 17 00:00:00 2001
From: sumit joshi <47482270+Sumit-tech-joshi@users.noreply.github.com>
Date: Thu, 28 Mar 2024 23:33:03 -0700
Subject: [PATCH 2/3] Add invalid test case for is date function

---
 test/validators.test.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/validators.test.js b/test/validators.test.js
index 6c68cd71a..946e96947 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -12957,6 +12957,8 @@ describe('Validators', () => {
         '2019-02-29', // non-leap year
         '2020-04-31', // invalid date
         '2020/03-15', // mixed delimiter
+        '-2020-04-19',
+        '-2023/05/24'
       ],
     });
     test({

From eadfad42794aef21b909132e40c7509b9282c372 Mon Sep 17 00:00:00 2001
From: sumit joshi <47482270+Sumit-tech-joshi@users.noreply.github.com>
Date: Thu, 28 Mar 2024 23:38:11 -0700
Subject: [PATCH 3/3] Added missing coma

---
 test/validators.test.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/validators.test.js b/test/validators.test.js
index 946e96947..2d66e5831 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -12958,7 +12958,7 @@ describe('Validators', () => {
         '2020-04-31', // invalid date
         '2020/03-15', // mixed delimiter
         '-2020-04-19',
-        '-2023/05/24'
+        '-2023/05/24',
       ],
     });
     test({