     .pipe coffee()
     .pipe addsrc src.js.vendor
     .pipe concat dist.name + ".#{lang}.js"
-    .pipe uglify mangle: false
+    .pipe uglify()
     .pipe header banner, pkg: pkg
     .pipe gulp.dest dist.js
     return

  .pipe coffee()
  .pipe addsrc src.js.vendor
  .pipe concat dist.name + ".js"
  .pipe uglify mangle: false
  .pipe header banner, pkg: pkg
  .pipe gulp.dest dist.js
  return

  .pipe concat dist.name + '.css'
  .pipe prefix()
  .pipe strip all: true
  .pipe shorthand()
  .pipe cssmin()
  .pipe header banner, pkg: pkg
  .pipe gulp.dest dist.css
