I can’t quite agree with that. There are endless packages on npm. Yes, of course they are made for node and/or browser, but the most popular ones are made as a UMD module, which means that they work in Node and browser at the same time, without any changes. If they also don’t rely on DOM properties or from Node, which is generally the case for UMD modules, then there is nothing to stop them from working in Scriptable. For example moment.js or csv2json from csvjson.com
I would also like to play with more UI elements 