Error on parallelize plugin

[lelea2]

I got this error [broccoli-persistent-filter:Babel > [Babel: ember-element-helper]: Babel: ember-element-helper] was configured to throwUnlessParallelizable and was unable to parallelize a plugin while trying to build with the set. up

  'ember-cli-babel': { 
      includeExternalHelpers: true, 
      throwUnlessParallelizable: true, 
    }, 
 

[mrloop]

I'm experiencing the same issue, created a example project demonstrating it https://github.com/mrloop/ember-element-helper-parallelizable

[mrloop]

Ah there's already a PR #33 , thanks @lelea2 👍

[rwjblue]

Fixed by #33