This is an apache-like directory listing site for a google bucket. It can be deployed to any bucket with a public domain. It's an adaptation of https://github.com/rufuspollock/s3-bucket-listing.
Fire up your favorite http server and make sure the domain and port are listed in config.js. localhost:8080 is already setup in config.js.
For example, npx http-server .
make sure config.js has a listing for the bucket where you wish to deploy
cd bucket-directory-listing
gsutil -m rsync -n . gs://releases.naturalcapitalproject.org
After deploying I needed to manually edit the "Type" of the javascript files. By default they receive "text/plain". The file's metadata can be edited to change the content type to "application/javascript", which is necessary for the client browser to accept them. I don't recall needing to do this in the past.