How do I use a Buffer in angularjs?

I need to convert some hex in my angularjs web program. We are using a version of lineman that supports including of single js files into angularjs. I have packaged the Buffer into a single file for this purpose. I'm a little lost on how to define this in Angular though.

Here is what I have so far:

echo exports.Buffer=Buffer > buffer.js
browserify -s buffer buffer.js > vendor/js/buffer.js
rm buffer.js

And now to test it:

nodejs
> b=require('./vendor/js/buffer.js')
{ Buffer: 
   { [Function: Buffer]
     poolSize: 8192,
     TYPED_ARRAY_SUPPORT: true,
     isBuffer: [Function],
     compare: [Function],
     isEncoding: [Function],
     concat: [Function],
     byteLength: [Function],
     _augment: [Function] } }
> b.Buffer
{ [Function: Buffer]
  poolSize: 8192,
  TYPED_ARRAY_SUPPORT: true,
  isBuffer: [Function],
  compare: [Function],
  isEncoding: [Function],
  concat: [Function],
  byteLength: [Function],
  _augment: [Function] }

Now it would be nice to define it in app.coffee like this:

angular.module("app").service("Buffer", [Buffer])

This is the error:

Uncaught ReferenceError: Buffer is not defined