File extension not supported

[jescalan]

Perhaps I'm doing something wrong here -- I'm trying to use a gulp plugin to compile jade, but alas duo is telling me that this file type is not supported.

The folder structure of the project:

.
├── app.coffee
├── index.jade
└── package.json

Code in app.coffee, which is the point from which I'm running duo:

Duo    = require 'duo'
gulp   = require 'duo-gulp'
accord = require 'gulp-accord'

duo = Duo(__dirname)
  .entry('index.jade')
  .use(gulp(accord)('jade'))

duo.run (err, src) ->
  if err then return console.error(err.stack)
  console.log src

The jade file is just a generic hello world, and package.json also generic with just the packages referenced above installed. When I execute app.coffee, I get this error back:

Error: index.jade: ".jade" not supported
  at error (/Users/jeff/Desktop/duo-test/node_modules/duo/lib/duo.js:986:10)
  at Duo.callee$0$2$ (/Users/jeff/Desktop/duo-test/node_modules/duo/lib/duo.js:474:13)
  at Empty.invoke (evalmachine.<anonymous>:148:31)
  at Duo.next (/Users/jeff/Desktop/duo-test/node_modules/duo/node_modules/co/index.js:74:21)
  at Duo.<anonymous> (/Users/jeff/Desktop/duo-test/node_modules/duo/node_modules/co/index.js:93:18)
  at Object._onImmediate (/Users/jeff/Desktop/duo-test/node_modules/duo/node_modules/co/index.js:52:14)
  at processImmediate [as _immediateCallback] (timers.js:336:15)

Halp!

[matthewmueller]

So Duo needs to know that the file type has changed. When you compile index.jade, it will need to become index.js in order for Duo to continue building.

duo-gulp changes the file type here: https://github.com/duojs/gulp/blob/master/index.js#L43 and it's based on File.path object in gulp.

I have a feeling the plugin doesn't update the file path, so Duo has no way of knowing that it's now working with JS.

[jescalan]

Yeah I don't think it does change the file path. This is something that has to be done in the gulp plugin? Also this will compile it to .html not .js - does that matter?