Edit (28/10/2020): This tutorial has been updated to work with npm 7, create-react-app@4.0.0 and snowpack@2.15.1.

You can find the finished project on GitHub.

Some of the comments made throughout this post may no longer apply with CRA 4. I am updated at the request of others!

The post is now a few months old, so look out for new fresh content with Snowpack that will delve more into running Snowpack with Webpack 5 and TypeScript 4.