From 30fe1209ede399313c5e43bab931cf19bb29abcd Mon Sep 17 00:00:00 2001
From: Johan Nyman <johan@nytamin.se>
Date: Fri, 20 Oct 2023 15:22:06 +0200
Subject: [PATCH 1/3] chore: add test

---
 apps/app/src/lib/__tests__/util.test.ts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 apps/app/src/lib/__tests__/util.test.ts

diff --git a/apps/app/src/lib/__tests__/util.test.ts b/apps/app/src/lib/__tests__/util.test.ts
new file mode 100644
index 00000000..2aff587c
--- /dev/null
+++ b/apps/app/src/lib/__tests__/util.test.ts
@@ -0,0 +1,22 @@
+import { deepExtendRemovingUndefined } from '../util'
+
+test('deepExtendRemovingUndefined', () => {
+	{
+		const target = {
+			a: 1,
+		}
+		deepExtendRemovingUndefined(target, {
+			b: 2,
+		})
+		expect(target).toStrictEqual({ a: 1, b: 2 })
+	}
+	{
+		const target = {
+			a: [1, 2, 3],
+		}
+		deepExtendRemovingUndefined(target, {
+			a: [4, 5, 6],
+		})
+		expect(target).toStrictEqual({ a: [4, 5, 6] })
+	}
+})

From e16c389acc8765be618616b0ab98c33a1667276d Mon Sep 17 00:00:00 2001
From: Johan Nyman <johan@nytamin.se>
Date: Fri, 20 Oct 2023 15:56:20 +0200
Subject: [PATCH 2/3] fix: don't merge arrays

---
 apps/app/src/lib/util.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/apps/app/src/lib/util.ts b/apps/app/src/lib/util.ts
index 743e684e..a94c5dce 100644
--- a/apps/app/src/lib/util.ts
+++ b/apps/app/src/lib/util.ts
@@ -871,4 +871,5 @@ export const deepExtendRemovingUndefined = deepmergeIntoCustom({
 			}
 		}
 	},
+	mergeArrays: false,
 })

From dbc760e0e576ee638048625ebb4f1950b3773bbe Mon Sep 17 00:00:00 2001
From: Johan Nyman <johan@nytamin.se>
Date: Fri, 20 Oct 2023 15:56:30 +0200
Subject: [PATCH 3/3] chore: add test

---
 apps/app/src/lib/__tests__/util.test.ts | 65 +++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/apps/app/src/lib/__tests__/util.test.ts b/apps/app/src/lib/__tests__/util.test.ts
index 2aff587c..fc83112b 100644
--- a/apps/app/src/lib/__tests__/util.test.ts
+++ b/apps/app/src/lib/__tests__/util.test.ts
@@ -19,4 +19,69 @@ test('deepExtendRemovingUndefined', () => {
 		})
 		expect(target).toStrictEqual({ a: [4, 5, 6] })
 	}
+
+	{
+		const target = {
+			arr: [1, 2, 3],
+			obj: {
+				num: 1,
+				arr: [
+					{
+						a: 1,
+					},
+					{
+						b: 2,
+					},
+				],
+				obj: {
+					a: 1,
+				},
+				toBeUndefined: {
+					a: 1,
+				},
+			},
+		}
+		deepExtendRemovingUndefined(target, {
+			arr: [3, 4, 5],
+			obj: {
+				num: 2,
+				arr: [
+					{
+						a: 2,
+					},
+					{
+						b: 3,
+					},
+					{
+						c: 4,
+					},
+				],
+				obj: {
+					b: 2,
+				},
+				toBeUndefined: undefined,
+			},
+		})
+		expect(target).toStrictEqual({
+			arr: [3, 4, 5],
+			obj: {
+				num: 2,
+				arr: [
+					{
+						a: 2,
+					},
+					{
+						b: 3,
+					},
+					{
+						c: 4,
+					},
+				],
+				obj: {
+					a: 1,
+					b: 2,
+				},
+			},
+		})
+	}
 })