Libuv: compiles fine, but doesn't have the platform specific Code (somebody needs to write it), so it is BROKEN. Recipe is in Haikuports git.
Node.js: needs v8. The v8 Haiku port is too old, needs to be re-ported.
So the answers: no, no.
But why to ask something, what you can find out: https://github.com/haikuports/haikuports