build: update to Node.js v24.0.0, pnpm v10, Tailwind CSS v4

packages/utils/src/test/objects.test.ts

@@ -0,0 +1,85 @@
+import assert from "node:assert/strict"
+import { describe, it } from "node:test"
+import { deepMerge } from "../objects.ts"
+
+describe("objects", () => {
+  describe("deepMerge", () => {
+    it("should merge two simple objects", () => {
+      // Arrange - Given
+      const object1 = { a: 1, b: 2 }
+      const object2 = { b: 3, c: 4 }
+
+      // Act - When
+      const output = deepMerge(object1, object2)
+
+      // Assert - Then
+      const expected = { a: 1, b: 3, c: 4 }
+      assert.deepStrictEqual(output, expected)
+    })
+
+    it("should deeply merge nested objects", () => {
+      // Arrange - Given
+      const object1 = { a: 1, b: { x: 2, y: 3 } }
+      const object2 = { b: { y: 4, z: 5 }, c: 6 }
+
+      // Act - When
+      const output = deepMerge(object1, object2)
+
+      // Assert - Then
+      const expected = { a: 1, b: { x: 2, y: 4, z: 5 }, c: 6 }
+      assert.deepStrictEqual(output, expected)
+    })
+
+    it("should overwrite primitive values", () => {
+      // Arrange - Given
+      const object1 = { a: 1, b: "hello" }
+      const object2 = { a: 2, b: "world" }
+
+      // Act - When
+      const output = deepMerge(object1, object2)
+
+      // Assert - Then
+      const expected = { a: 2, b: "world" }
+      assert.deepStrictEqual(output, expected)
+    })
+
+    it("should return the second object if the first is empty", () => {
+      // Arrange - Given
+      const object1 = {}
+      const object2 = { a: 1, b: 2 }
+
+      // Act - When
+      const output = deepMerge(object1, object2)
+
+      // Assert - Then
+      const expected = { a: 1, b: 2 }
+      assert.deepStrictEqual(output, expected)
+    })
+
+    it("should return the first object if the second is empty", () => {
+      // Arrange - Given
+      const object1 = { a: 1, b: 2 }
+      const object2 = {}
+
+      // Act - When
+      const output = deepMerge(object1, object2)
+
+      // Assert - Then
+      const expected = { a: 1, b: 2 }
+      assert.deepStrictEqual(output, expected)
+    })
+
+    it("should handle null and undefined values correctly", () => {
+      // Arrange - Given
+      const object1 = { a: 1, b: null }
+      const object2 = { b: { c: 2 }, d: undefined }
+
+      // Act - When
+      const output = deepMerge(object1, object2)
+
+      // Assert - Then
+      const expected = { a: 1, b: { c: 2 }, d: undefined }
+      assert.deepStrictEqual(output, expected)
+    })
+  })
+})