Fedora 27 includes Node.js 8, which is the current version of the platform. This release line will become a Node.js Long Term Support (LTS) release at the end of October 2017. Some of the highlights of Node.js 8 include:
experimental support for Node API (N-API)
version 5 of the npm client
For more information about the range of updates and new features introduced in Node.js 8, please see the release announcement.