   ] if args.stage
   sequence.push 'concatScripts'
   sequence.push 'livereload-notify' if changedFilePath && !args.stage
-  sequence.push callback
+  sequence.push done
   runSequence sequence...
 
-gulp.task 'build', (callback) ->
+gulp.task 'build', (done) ->
   runSequence [
     'clean'
     'stylus'
     'coffee'
     'react'
     'js'
-    callback
+    done
   ]...
 
 gulp.task 'env', ->

      else changedFilePath = null
  watch.start()

gulp.task 'run', (callback) ->
  runSequence 'env', 'livereload-server', 'watch', 'server', callback

gulp.task 'default', (callback) ->
  runSequence 'build', 'run', callback

gulp.task 'bump', (done) ->
  gulp.src paths.packages

  options.compilerFlags.externs.push nodeJsExterns...
  compile 'server/app/build', options

gulp.task 'js', (done) ->
  sequence = []
  sequence.push 'deps' if closureDeps.changed changedFilePath
  sequence.push 'unitTests', 'diContainer', 'concatDeps'
