These sites are helpful:

• https://api.tfl.gov.uk/swagger/ui/index.html?url=/swagger/docs/v1#!
• ChatGPT has been helpful: https://chat.openai.com/c/18ad93a3-fcb0-443a-9f95-afb888f19dec
• https://docs.mapbox.com/mapbox-gl-js/api/

How to test locally:

• create a consts.js file that exports your mapbox access token and the URI to your preferred map style, and a secrets.txt that contains your TfL app key (if you plan on running the TfL Client script)
• Navigate to london-tube-game directory
• Run http-server
• Follow the url that you're given in order to access html files