@@ -582,7 +582,7 @@ would be much better to just use ES2015/ES6 classes and simply extend the `Array
 
 **Bad:**
 ```javascript
-Array..diff = function(comparisonArray) {
+Array..diff = function diff(comparisonArray) {
 const values = [];
 const hash = {};
 
@@ -972,7 +972,7 @@ const Employee = function(name) {
 this.name = name;
 }
 
-Employee..getName = function() {
+Employee..getName = function getName() {
 return this.name;
 }
 
@@ -984,15 +984,11 @@ console.log('Employee name: ' + employee.getName()); // Employee name: undefined
 
 **Good**:
 ```javascript
-const Employee = (function() {
-function Employee(name) {
-this.getName = function() {
-return name;
-};
-}
-
-return Employee;
-}());
+const Employee = function (name) {
+this.getName = function getName() {
+return name;
+};
+};
 
 const employee = new Employee('John Doe');
 console.log('Employee name: ' + employee.getName()); // Employee name: John Doe
@@ -1278,7 +1274,7 @@ class DOMTraverser {
 
 const $ = new DOMTraverser({
 rootNode: document.getElementsByTagName('body'),
-animationModule: function() {} // Most of the time, we won't need to animate when traversing.
+animationModule() {} // Most of the time, we won't need to animate when traversing.
 // ...
 });
 
@@ -1312,7 +1308,7 @@ class DOMTraverser {
 const $ = new DOMTraverser({
 rootNode: document.getElementsByTagName('body'),
 options: {
-animationModule: function() {}
+animationModule() {}
 }
 });
 ```
@@ -1429,7 +1425,7 @@ const Animal = function(age) {
 this.age = age;
 };
 
-Animal..move = function() {};
+Animal..move = function move() {};
 
 const Mammal = function(age, furColor) {
 if (!(this instanceof Mammal)) {
@@ -1442,7 +1438,7 @@ const Mammal = function(age, furColor) {
 
 Mammal. = Object.create(Animal.);
 Mammal..constructor = Mammal;
-Mammal..liveBirth = function() {};
+Mammal..liveBirth = function liveBirth() {};
 
 const Human = function(age, furColor, languageSpoken) {
 if (!(this instanceof Human)) {
@@ -1455,7 +1451,7 @@ const Human = function(age, furColor, languageSpoken) {
 
 Human. = Object.create(Mammal.);
 Human..constructor = Human;
-Human..speak = function() {};
+Human..speak = function speak() {};
 ```
 
 **Good:**
@@ -1663,8 +1659,8 @@ or refactoring an existing one.
 ```javascript
 const assert = require('assert');
 
-describe('MakeMomentJSGreatAgain', function() {
-it('handles date boundaries', function() {
+describe('MakeMomentJSGreatAgain', () => {
+it('handles date boundaries', () => {
 let date;
 
 date = new MakeMomentJSGreatAgain('1/1/2015');
@@ -1686,20 +1682,20 @@ describe('MakeMomentJSGreatAgain', function() {
 ```javascript
 const assert = require('assert');
 
-describe('MakeMomentJSGreatAgain', function() {
-it('handles 30-day months', function() {
+describe('MakeMomentJSGreatAgain', () => {
+it('handles 30-day months', () => {
 const date = new MakeMomentJSGreatAgain('1/1/2015');
 date.addDays(30);
 date.shouldEqual('1/31/2015');
 });
 
-it('handles leap year', function() {
+it('handles leap year', () => {
 const date = new MakeMomentJSGreatAgain('2/1/2016');
 date.addDays(28);
 assert.equal('02/29/2016', date);
 });
 
-it('handles non-leap year', function() {
+it('handles non-leap year', () => {
 const date = new MakeMomentJSGreatAgain('2/1/2015');
 date.addDays(28);
 assert.equal('03/01/2015', date);
@@ -1734,13 +1730,13 @@ require('request').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin', (req
 **Good**:
 ```javascript
 require('request-promise').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin')
-.then(function(response) {
+.then((response) => {
 return require('fs-promise').writeFile('article.html', response);
 })
-.then(function() {
+.then(() => {
 console.log('File written');
 })
-.catch(function(err) {
+.catch((err) => {
 console.error(err);
 })
 
@@ -1757,13 +1753,13 @@ today!
 **Bad:**
 ```javascript
 require('request-promise').get('https://en.wikipedia.org/wiki/Robert_Cecil_Martin')
-.then(function(response) {
+.then((response) => {
 return require('fs-promise').writeFile('article.html', response);
 })
-.then(function() {
+.then(() => {
 console.log('File written');
 })
-.catch(function(err) {
+.catch((err) => {
 console.error(err);
 })