   gulp.src(paths.less)
     .pipe(sourcemaps.init())
       .pipe(less())
+      .on('error', printError)
       .pipe(minifyCSS())
       .pipe(rename extname: '.min.css')
     .pipe(sourcemaps.write())

  )

  b.bundle()
    .pipe(source paths.app)
    .pipe(buffer())
    .pipe(sourcemaps.init loadMaps: true)

    'src/coffee/worker.coffee'
  ]

printError = (err) ->
  console.error err
  @emit 'end'

gulp.task 'coffee', ->
  b = browserify(
    entries: paths.entries
