The ability to do this largely depends on the library authors supporting a build that works in the web without having to build it locally.
Unfortunately the tremor library doesn’t appear to have such an option and so the technique being referred isn’t possible. (There’s no supported CDN for tremor I can find).
With a library like this that requires a build step we get into the pain of JavaScript build tools, which are numerous. If you’re not very experienced in this area then it’s a rabbit hole I wouldn’t recommend. I wouldn’t recommend it for those with experience.
We are aware of the desire for use cases like this and we have plans. So I guess watch this space.