Too Long; Didn't Read
<strong>TL;DR</strong> if you happen to be using <a href="https://hackernoon.com/node-js-v6-transitions-to-lts-be7f18c17159#.hwnsy6yuh" target="_blank">Node v6 LTS</a> you should consider replacing babel-preset-es2015 with <a href="https://github.com/Salakar/babel-preset-node6" target="_blank">babel-preset-node6</a> for minimal <em>transpiler</em> effort and more use of Node’s v6 native support to ES6/ES2015.