wip: code formatting nits continued

test/join.spec.js

@@ -0,0 +1,19 @@
+import join from '../src/join';
+
+describe('join', () => {
+    const array = ['a', 'b', 'c'];
+
+    it('should return join all array elements into a string', () => {
+        expect(join(array, '~')).toBe('a~b~c');
+    });
+
+    it('should return an unwrapped value when implicitly chaining', () => {
+        const wrapped = _(array);
+        expect(wrapped.join('~')).toBe('a~b~c');
+        expect(wrapped.value()).toBe(array);
+    });
+
+    it('should return a wrapped value when explicitly chaining', () => {
+        expect(_(array).chain().join('~') instanceof _);
+    });
+});