From 2687a27e3bcaaa52d7d68e4fe8703ccc43c7785a Mon Sep 17 00:00:00 2001
From: Babar Saleh Hayat <babar@vastmesh.com>
Date: Thu, 21 Mar 2024 12:22:02 +0500
Subject: [PATCH] Fix for issue #6202: appended null as return type for toJSON

---
 moment.d.ts                | 2 +-
 src/test/moment/to_type.js | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/moment.d.ts b/moment.d.ts
index 2c5b3cf46b..e75e7c7a3a 100644
--- a/moment.d.ts
+++ b/moment.d.ts
@@ -589,7 +589,7 @@ declare namespace moment {
     toDate(): Date;
     toISOString(keepOffset?: boolean): string;
     inspect(): string;
-    toJSON(): string;
+    toJSON(): string | null;
     unix(): number;
 
     isLeapYear(): boolean;
diff --git a/src/test/moment/to_type.js b/src/test/moment/to_type.js
index 4881c1fad1..307ed8a3a2 100644
--- a/src/test/moment/to_type.js
+++ b/src/test/moment/to_type.js
@@ -29,6 +29,8 @@ test('toDate returns a copy of the internal date', function (assert) {
 });
 
 test('toJSON', function (assert) {
+    assert.strictEqual(moment(null).toJSON(), null, 'toJSON null');
+
     if (Date.prototype.toISOString) {
         var expected = new Date().toISOString();
         assert.deepEqual(moment(expected).toJSON(), expected, 'toJSON invalid');