I'm incredibly new to GIS, but not to web development.
I have two land cover maps for two islands, which I'm spatializing data on top of for a web app. This data is agnostic of any real location data - I know that certain data points belong on certain land types, but since everything is just images and arrays, I've never needed to worry about long/lat. Up until now I've been using p5.js to build out the maps and the points.
Someone accidentally mentioning GIS triggered a quest to see if there are any JS libraries that deal with data from land use maps. Whether they generate GeoJSON from land use/cover images, or can somehow intake land cover data and display it over top of a live map, I'd love to see if I can future-proof my web app by using real maps instead of screenshots off of Google Earth. "Land cover/use" doesn't seem like it's a frequent tag on these libraries, but I'm new to this world and might be missing something.