Conor Hunt's IRB debugger script

gistfile1.rb

if Rails.env.development? || Rails.env.test?
  require 'irb'

  module IRB
    def self.start_session(binding)
      unless @__initialized
        args = ARGV
        ARGV.replace(ARGV.dup)
        IRB.setup(nil)
        ARGV.replace(args)
        @__initialized = true
      end

      workspace = WorkSpace.new(binding)

      irb = Irb.new(workspace)

      @CONF[:IRB_RC].call(irb.context) if @CONF[:IRB_RC]
      @CONF[:MAIN_CONTEXT] = irb.context

      catch(:IRB_EXIT) do
        irb.eval_input
      end
    end
  end
else
  module IRB # :nodoc:
    def self.start_session(binding)
      puts "Attemting to start IRB session in prod"
    end
  end
end