As someone new to it, I found it hard because the docs were incomplete. The "usual" use case of collaborative text editing with a pre-made text editor was well

As someone new to it, I found it hard because the docs were incomplete. The "usual" use case of collaborative text editing with a pre-made text editor was well documented. For example here you can see a lot of "todo" in the docs: https://docs.yjs.dev/tutorials/creating-a-custom-provider https://docs.yjs.dev/tutorials/creating-a-custom-provider