Node Cookbook - Third Edition

Modernizing syntax

Recent Node.js versions support modern JavaScript syntax. Let's use some of these shiny new JavaScript features to improve the tests we wrote in the preceding section.

EcmaScript 6 We'll be using EcmaScript 6 (EcmaScript 2015) features here. To learn more about EcmaScript 6 (EcmaScript 2015) see http://es6-features.org.

For this to work, we'll need at least Node version 5 installed, and preferably Node version 6 or greater.

Managing Node Versions Check out nvm (https://github.com/creationix/nvm) or n (https://github.com/tj/n) for an easy way to switch between Node versions.

Node 6 and above should support all the syntax we'll be using; Node v5 will support all of it as long as we pass a special flag.

Transpilation For versions ...