How do I integrate it into an existing nextjs project?

[andrew-oko-odion]

I am wondering how I might be able to seamlessly use it
on an existing nextjs project.

I see you are using react-router and a couple of other stuffs that
comes by default in create-react-app

please advice, thanks!!!

[codeyourwayup]

It is difficult to migrate to the next js because it's built based upon create react app. But you can still use the UI library though.