config.json.erb

<%-
# Here be hax - we find all values that are integers masked as strings and
# turn them into actual integers. Thanks puppet.
numerify = lambda do |obj|
  case obj
  when lambda { |o| o.respond_to?(:to_i) && o.to_i.to_s == o.to_s }
    begin
      Integer(obj)
    rescue ArgumentError
      obj
    end
  when Array
    obj.map { |e| numerify.call(e) }
  when Hash
    obj.merge(obj) { |k, val| numerify.call(val) }
  else
    obj
  end
end

-%><%= JSON.pretty_generate({@name => numerify.call(@options)}) %>