wip: code formatting nits continued

test/last.spec.js

@@ -0,0 +1,28 @@
+import lodashStable from 'lodash';
+import last from '../src/last';
+
+describe('last', () => {
+    const array = [1, 2, 3, 4];
+
+    it('should return the last element', () => {
+        expect(last(array)).toBe(4);
+    });
+
+    it('should return `undefined` when querying empty arrays', () => {
+        const array = [];
+        array['-1'] = 1;
+
+        expect(last([])).toBe(undefined);
+    });
+
+    it('should work as an iteratee for methods like `_.map`', () => {
+        const array = [
+            [1, 2, 3],
+            [4, 5, 6],
+            [7, 8, 9],
+        ];
+        const actual = lodashStable.map(array, last);
+
+        expect(actual).toEqual([3, 6, 9]);
+    });
+});