Stenograph is a straight forward nested transaction library. It allows you to track your transactions such as I/O across modules, files, and even the event loop. You can write your transaction instrumentation code once and not worry about passing around anything about the transaction.
Stenograph does add a minor amount of boilerplate, but it was written in such a way to be straight forward and to minimize the amount of boilerplate. Built on the idea of write once, use anywhere.
npm install stenographvar Stenograph = require('stenograph');
var steno = Stenograph.getInstance();