Where to find it? https://developers.google.com/web/tools/starter-kit/
What is Web Starter Kit? Web Starter Kit is an opinionated boilerplate for web development. Tools for building a great experience across many devices and performance oriented. Helping you to stay productive following the best practices outlined in Google's Web Fundamentals. A solid starting point for both professionals and newcomers to the industry.
Inspiration Web Starter Kit is inspired by Mobile HTML5 Boilerplate and Yeoman's generator-gulp-webapp, having taken input from contributors to both projects during development.