Modules including ActionView::Helpers fail to load due to JavaScript vs Javascript typo

If I define a module:

module FailsToLoad
  include ActionView::Helpers
end

It will fail to load with the error message:

/opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:440:in `load_missing_constant':NameError: uninitialized constant FailsToLoad::JavascriptHelper

This is cause by the line:

autoload :JavascriptHelper, 'action_view/helpers/javascript_helper'

should be:

autoload :JavaScriptHelper, 'action_view/helpers/javascript_helper'

as the file action_view/helpers/javascript_helper defines ActionView::Helpers::JavaScriptHelper (note capitalisation).