wip: code formatting nits continued

test/updateWith.spec.js

@@ -0,0 +1,18 @@
+import lodashStable from 'lodash';
+import { stubThree, stubFour, noop } from './utils';
+import updateWith from '../src/updateWith';
+
+describe('updateWith', () => {
+    it('should work with a `customizer` callback', () => {
+        const actual = updateWith({ 0: {} }, '[0][1][2]', stubThree, (value) =>
+            lodashStable.isObject(value) ? undefined : {},
+        );
+
+        expect(actual).toEqual({ 0: { 1: { 2: 3 } } });
+    });
+
+    it('should work with a `customizer` that returns `undefined`', () => {
+        const actual = updateWith({}, 'a[0].b.c', stubFour, noop);
+        expect(actual).toEqual({ a: [{ b: { c: 4 } }] });
+    });
+});