This works via WebRTC, and since the wtrc package for node.js is not well maintained, the CLI for drop.lol has been abandoned. Therefore croc solves a huge problem that I can't solve in drop.lol right now.
For anyone who needs a web application, this should work though.
(Although: I've stumbled upon a really good implementation of WebRTC in pure Rust, so I might end up trying to get it working with that or even trying to port that to node.js somehow)