Gulp task to concatenate all JS files from a Drupal website active modules with Gulp + Coffeescript + Drush

gulp-drupal-concat-js

drush = require 'drush-node'

destinations =
  js: 'assets/js'

gulp.task 'drupal-minifyjs', ->
  drush.init()
  .then () ->
    drush.exec('php-eval "print realpath(\'.\')"')
    .then (realpath) ->
      drush.exec('sqlq "SELECT filename FROM system WHERE type = \'module\' AND status = 1"')
      .then (res) ->
        lines = res.split("\n")
        modules_folders = []
        for line in lines
          if line.length > 0
            folders = line.split("/")
            folders.pop()
            module_path = "#{realpath}/" + folders.join('/') + "/**/*.js"
            modules_folders.push module_path

        gulp.src(modules_folders)
        .pipe($.concat('website-full.js'))
        .pipe(gulp.dest(destinations.js))