The toolset of the JavaScript developer is ever-evolving and ever-changing. Array manipulation saw dramatic improvements in usability, utility, and readability with the release of the ECMAScript 6 standard in 2015. This update was released with game-changing features like arrow functions, scoped variables like ‘let’ and ‘const’, and many other commonly used tools. As a developer, I use these features on a regular basis when developing in a Javascript environment, whether that’s a fr...