Better errors for non-webapps

better_errors.rb

# https://github.com/charliesome/better_errors/issues/55

require 'better_errors'

module BetterWrapper
  def self.wrap(&blk)
    yield
  rescue => e
    require 'rack'
    BetterErrors.application_root = File.expand_path("..", __FILE__)
    print_error e
    server.run builder_for(e), :Port => 9292
  end

  def self.print_error(e)
    puts "#{e.class}: #{e.message}"
    puts "  " + e.backtrace.join("\n  ")
  end

  def self.server
    server = Rack::Handler::WEBrick
    trap('INT') { server.shutdown }
    server
  end

  def self.builder_for(e)
    Rack::Builder.new do
      run BetterErrors::Middleware.new(Proc.new { |env| raise e })
    end
  end
end

# ------------

BetterWrapper.wrap do
  # do stuff here
  raise "Did it work?"
end