O'Reilly logo
  • Patrick S thinks this is interesting:

Note

Using .handlebars as a file extension was purely a personal choice. Some people prefer .hbs, and if you want, you can use anything you like. Just make sure that the first parameter to the app.engine() function and the second parameter in the app.set('view engine') function are identical.

From

Cover of Web Development with MongoDB and Node.js

Note

using extensions in configure.js