foo.coffee

_ = require 'lodash'

exports.bar = -> _.first [1, 2, 3]

console.log 'wired up!'

Gruntfile.coffee

module.exports = (grunt) ->
  grunt.initConfig
    browserify:
      options:
        require: ['lodash']
        bundleOptions:
          debug: true
      dev:
        options:
          transform: ['minifyify']
          # XXX uncomment next line to test other transform
          #transform: ['coffeeify']
        files: [
          {
            src: ['foo.coffee']
            dest: './public/bundle.js'
            nonull: true
          }
        ]
    clean: ['./public']
    'node-inspector':
      dev: {}

  require('load-grunt-tasks') grunt

  grunt.registerTask 'dev', [
    'clean'
    'browserify'
  ]

  return

package.json

{
  "name": "minifyify-gist",
  "version": "1.0.0",
  "description": "test minifyify as a transform-er with grunt-browserify",
  "engines": {
    "node": "0.11.13"
  },
  "devDependencies": {
    "coffeeify": "^0.7.0",
    "grunt": "^0.4.5",
    "grunt-browserify": "^2.1.3",
    "grunt-contrib-clean": "^0.5.0",
    "grunt-node-inspector": "^0.1.5",
    "load-grunt-tasks": "^0.6.0",
    "minifyify": "^3.0.12"
  },
  "dependencies": {
    "lodash": "^2.4.1"
  }
}