To get started:

npm i
npm start

To test locally

npm run start

It's easiest to test the subdomain feature by editing your hostfile.

The method for doing this will vary by operating system. On Mac OSX, add an entry to /etc/hosts like this:

127.0.0.1       fastjs.local

Then, you can test the subdomain redirects by visiting react.fastjs.local.

Set the environment variable RAVEN_URL to use Raven for monitoring.