NeuterFilter does not support coffeescript

[gutenye]

lib/main.js

require("a.js")

lib/a.coffee

console.log("a.coffee")

Assetfile

input "lib" do
  match "*.coffee" do
    coffee_script
  end

  match "main.js" do
    neuter "app.js"
  end
end

$ bundle exec rakep
> can't find lib/a.js