Quill's OT type is compatible with ShareDB, which provides a simple to use backend that takes care of all this coordination. Here is a simple example of using the two together: https://github.com/share/sharedb/tree/master/examples/rich-t...

Before the document format was added to sharedb I found it real easy to transform quill deltas into sharejs ops. Sharejs has a fuzzer you can use to test things like that, which was invaluable, but I want to stress how little work it was getting them to talk to each other. It'll be even less now