lib/ember/appkit/rails/sprockets/directive_processor.rb
require 'sprockets/directive_processor'
module Ember::Appkit::Rails::Sprockets::DirectiveProcessor
def process_require_environment_from_directive(path)
context.require_asset(File.join(path, ::Rails.env))
end
end
Sprockets::DirectiveProcessor.send(:include, Ember::Appkit::Rails::Sprockets::DirectiveProcessor)