From 61002d40eb9afb54c3903d6d70966965129e4d00 Mon Sep 17 00:00:00 2001
From: freakzlike <freakzlike@gmail.com>
Date: Mon, 15 Aug 2022 08:27:20 +0200
Subject: [PATCH] fix: keep Date objects on setData (#1720)

---
 src/utils.ts          |  2 ++
 tests/setData.spec.ts | 27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/src/utils.ts b/src/utils.ts
index f27368f40..23c10ea61 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -74,6 +74,8 @@ export const mergeDeep = (
 
     if (Array.isArray(targetValue) && Array.isArray(sourceValue)) {
       target[key] = sourceValue
+    } else if (sourceValue instanceof Date) {
+      target[key] = sourceValue
     } else if (isObject(targetValue) && isObject(sourceValue)) {
       target[key] = mergeDeep(Object.assign({}, targetValue), sourceValue)
     } else {
diff --git a/tests/setData.spec.ts b/tests/setData.spec.ts
index 9d291eaf9..30cfabd55 100644
--- a/tests/setData.spec.ts
+++ b/tests/setData.spec.ts
@@ -187,4 +187,31 @@ describe('setData', () => {
     await wrapper.setData({ state: { items: ['2', '3'] } })
     expect(wrapper.html()).toMatchInlineSnapshot(`"<div>2,3</div>"`)
   })
+
+  it('should keep Date object on setData', async () => {
+    const wrapper = mount(
+      {
+        template: '<div/>',
+        props: { modelValue: Date },
+        data() {
+          return { value: this.modelValue }
+        }
+      },
+      {
+        props: {
+          modelValue: new Date('2022-08-10T12:15:54Z')
+        }
+      }
+    )
+
+    expect(wrapper.vm.value).toBeInstanceOf(Date)
+    expect(wrapper.vm.value!.toISOString()).toBe('2022-08-10T12:15:54.000Z')
+
+    await wrapper.setData({
+      value: new Date('2022-08-11T12:15:54Z')
+    })
+
+    expect(wrapper.vm.value).toBeInstanceOf(Date)
+    expect(wrapper.vm.value!.toISOString()).toBe('2022-08-11T12:15:54.000Z')
+  })
 })