In 2015, the ECMAScript committee released a long-awaited major update of the JavaScript language. The update brought in many new features to JavaScript, such as Promises, arrow functions, and Class objects. The language update set the stage for improvements. since that should dramatically improve our ability to write clean, understandable JavaScript code.
The browser makers are adding those much-needed features, meaning the V8 engine is adding those features as well. These features are making their way into Node.js starting with version 4.x.
By default, only the ES-2015/2016/2017 features that V8 ...
