Parse doesn't provide a node.js environment. It's a custom V8 runtime environment, with commonjs and node-like modules. It's really neat, but it will be interesting to see how they maintain/extend a "node like" environment that's not really node. They run the risk of confusing developers who expect to do anything they can do in node.
There does not seem to be support for anything like Procfile or package.json / npm, though.