Gulp.js and modular coffeescript?

Question

CoffeeScript

Tell me how to set up gulpfile to build modules written in coffeescript
There are two files

src/coffee/partials/extra.coffee

define [], ->
  "My string"

src/coffee/main.coffee

define ['partials/extra.coffee'], (extra)->
  console.log "Returned: #{extra}"

gulp rebuilds the main.coffee file This is how my coffee task looks like now

gulpfile.coffee

# ==============================
#   CoffeeScript
# ==============================

coffee = require 'gulp-coffee'
coffeelint = require 'gulp-coffeelint'
jshint = require 'gulp-jshint'
stylish = require 'jshint-stylish'
uglify = require 'gulp-uglify'

gulp.task 'coffee', ->
  gulp.src path.src.coffee
  .pipe plumber
    errorHandler: handleError
  .pipe do rigger
  .pipe do sourcemaps.init
  .pipe do coffeelint.reporter
  .pipe coffeelint.reporter('fail')
  .pipe do coffee
  .pipe do jshint
  .pipe jshint.reporter stylish
  .pipe do sourcemaps.write
  .pipe gulpif ifProd, do uglify
  .pipe gulp.dest path.build.js
  .pipe reload
    stream: true

how to remake the task so that the output is modular js?

Answer 1

I'll answer my own question
. Here's a solution.

gulpfile.coffee

bundler =  ->
  browserify
    entries: [ path.src.coffee ]
    extensions: ['.coffee', '.js']
    debug : true
  .transform 'coffeeify'
  .transform 'deamdify'
  .bundle()
  .on 'error', handleError
  .pipe source 'main.js'
  .pipe gulp.dest path.build.js
  .pipe reload
    stream: true

gulp.task 'coffee', ->
  gulp.src path.src.coffee, read: false
  .pipe plumber
    errorHandler: handleError
  .pipe tap bundler

src/coffee/partials/extra.coffee

define [], ->
  "My string"

src/coffee/main.coffee

define ['./partials/extra'], (extra) ->
  console.log "Returned: #{extra}"