Based on Electron Framework.
Tested on Ubuntu 17.04 and MacBookPro11,4 2015 Motherboard 820-00138-A
Screen resolution tested: 1440x900
Required: node ≥v6.9.5

.

Install dependencies
npm install

Run
npm start

resources -- resources extracted from original macOS Sierra /System/Library/CoreServices/Setup Assistant.app
screenshots -- screenshots of original Setup Assistant.app.