From 816965affd04457ce6930ade46d8103a83dbd590 Mon Sep 17 00:00:00 2001
From: Vladimir Kalachev <vkalachev164@gmail.com>
Date: Tue, 28 Mar 2023 14:38:43 +0300
Subject: [PATCH] feat: support UTC timezone formatting

---
 src/dateTime/dateTime.ts | 2 +-
 src/index.test.ts        | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/dateTime/dateTime.ts b/src/dateTime/dateTime.ts
index 206c1ee..c9ec548 100644
--- a/src/dateTime/dateTime.ts
+++ b/src/dateTime/dateTime.ts
@@ -18,7 +18,7 @@ export const createDateTime = (
 export const createUTCDateTime = (input?: DateTimeInput, format?: FormatInput) => {
     return (
         format ? dayjs.utc(input as ConfigType, format, STRICT) : dayjs.utc(input as ConfigType)
-    ) as DateTime;
+    ).tz('UTC') as DateTime; // setting .tz('UTC') allows having .format('L z') -> `02/02/2000 UTC`
 };
 
 /**
diff --git a/src/index.test.ts b/src/index.test.ts
index 6321c7e..d095417 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -71,4 +71,13 @@ describe('Public API', () => {
 
         expect(timezone).toBe('Greenwich');
     });
+
+    it('utc timezone is supported', () => {
+        const dateWithTimezone = dateTime({
+            input: '2000-02-02T00:00:00.001Z',
+            timeZone: 'utc',
+        });
+
+        expect(dateWithTimezone.format('L z')).toBe('02/02/2000 UTC');
+    });
 });