I don't quite understand exactly how "module federation" works in webpack 5.

Let's say I'm a library author and I want to publish a build of my component lib that you can use with webpack 5 MF.

Can I build that and publish it on npm? Or do you have to build it with your app?

I'm assuming you have to build it with your app. Otherwise, I might bundle in stuff that you don't actually need in your app and it wouldn't be able to be "tree-shaken".

If that's the case, are other tools able to participate in module federation? Or do you have to use webpack?