This has been killing me all day. I have a Rails app that I'm upgrading from 3.2 to 4.0.13 that works fine in development. In testing in Rails 4, I get
ExecJS::ProgramError: ReferenceError: CoffeScript is not defined
on a whole slew of integration tests. Nowhere am I explicitly calling or using ExecJS, it appears to be being called through coffee-script which is in turn being called through coffee-rails.
I don't even know what useful stuff I can give you to help. This even happens if I manually compile all my coffeescript to javascript, so I don't think it's my coffee that's making this happen.
Please feel free to ask for stuff and I'll give it to you.
Gems with versions that might be touching this:
rails 4.0.13 capybara 2.7.1 capybara-webkit 1.11.1 coffee-rails 4.2.1 coffee-script 2.4.1 execjs 2.7.0
The latest release of coffee-script-source is empty: https://github.com/jashkenas/coffeescript/issues/4403 due to a bad release
Try and use 1.11.1
gem 'coffee-script-source', '1.11.1'