class Cucumber::Messages::NdjsonToMessageEnumerator

def initialize(io)
  super() do |yielder|
    io.each_line do |line|
      next if line.strip.empty?
      begin
        m = JSON.parse(line)
      rescue => e
        raise "Not JSON: #{line.strip}"
      end
      yielder.yield(m)
    end
  end
end