Node Cookbook, Chapter 6 Making an express web application

Now the particular issue that I've run into with this example is implementation of Jade mixin s in this example.  One I would indicate that the mixin in Jade is simply a short hand java script function for the Jade scripting system (inspired incidentally by Haml for Node).  Unfortunately, the Jade script, Profiles.Jade file includes what should apparently be defined as two empty functions which it appears automatically generate an error, but handled by the index.js through the main body apps routes/index.js script...sort of circuitous silliness in my opinion :) ...umm...book example script appears in some ways to be a mess, but...