demo link in readme does not display map, has uncaught ReferenceError

[skora-cpl]

The demo link in readme.md where prospective users can view a live example. That link currently goes to https://googlemaps.github.io/js-markerclusterer/public/defaults/ but that page is an empty page

with a console error of Uncaught ReferenceError: process is not defined <anonymous> https://googlemaps.github.io/js-markerclusterer/public/defaults/vendor.js:10

-- Reproducible in chrome 142 and Firefox 145 for what it's worth.

Steps to reproduce

1. Visit https://googlemaps.github.io/js-markerclusterer/public/defaults/