Node js to meteor

I’m not a programmer, but I need some info on meteor, I though I could ask here. maybe it’s dumb question…

I’m planning to rework some opensource project made in node js,

so, how are compatible are web app made in node js with meteor, do they need some porting or should be a straightforward process?

A lot will depend on what type of project it is. A lot of NPM modules can be imported to meteor and used directly, however if this node project is a full web app with it’s own UI, router and database schema (and technology) it may require more work.

What is the project?