I want to use Node.js scripts in my C/C++ applications. Some people suggested me to start with v8, libev and libeio; but it means rewriting Node.js from scratch.
I've build something close to what I think you're looking for:
https://github.com/ZECTBynmo/tacnode
It's a library that allows node.js to be linked statically into a C++ application. It's definitely not polished, but I've used it to launch simple node scripts.