unlink always throws an error

[neil-lindquist]

I'm getting errors when my code calls unlink.

...\temporary\lib\file.js:100 Uncaught Error: null
    at ...\temporary\lib\file.js:100
    at FSReqCallback.oncomplete (fs.js:150)

Looking at the node.js filesystem docs, the callback's argument needs to be checked whether it's an error. However, the code for this library always throws the object.
My code works without the error if I pass a callback of (in Coffeescript) (err) -> if err then throw err, so I'd recommend changing to something similar.