Fix build error

src/Testing/newFolder.luau

@@ -0,0 +1,13 @@
+local function newFolder(children: { [string]: Instance }): Folder
+	local folder = Instance.new("Folder")
+	folder.Name = "Root"
+
+	for name, child in pairs(children) do
+		child.Name = name
+		child.Parent = folder
+	end
+
+	return folder
+end
+
+return newFolder

src/Testing/newFolder.spec.luau

@@ -0,0 +1,36 @@
+local JestGlobals = require("@pkg/JestGlobals")
+local newFolder = require("./newFolder")
+
+local expect = JestGlobals.expect
+local test = JestGlobals.test
+
+test("return a folder named 'Root'", function()
+	local folder = newFolder({})
+	expect(folder:IsA("Folder")).toBe(true)
+	expect(folder.Name).toBe("Root")
+end)
+
+test("name children after the dictionary keys", function()
+	local child1 = Instance.new("Part")
+	local child2 = Instance.new("Model")
+
+	local folder: any = newFolder({
+		Child1 = child1,
+		Child2 = child2,
+	})
+
+	expect(folder.Child1).toBe(child1)
+	expect(folder.Child2).toBe(child2)
+end)
+
+test("support nesting newFolder as children", function()
+	local folder: any = newFolder({
+		Child = newFolder({
+			AnotherChild = newFolder({
+				Module = Instance.new("ModuleScript"),
+			}),
+		}),
+	})
+
+	expect(folder.Child.AnotherChild.Module).toBeDefined()
+end)