sorbet_options.rb

require 'sorbet-runtime'
require 'active_support'

class ApplicationScript < T::InexactStruct
  def self.run!(args = ARGV)
    options = {}
    OptionParser.new do |parser|
      props.each do |propname, prop|
        # special case T::Boolean because OptionParser doesn't understand it
        if prop[:type] == T::Boolean
          parser.on("--[no-]#{propname.to_s.dasherize}") do |val|
            options[propname] = val
          end
        else
          parser.on("--#{propname.to_s.dasherize} #{propname.upcase}", prop[:type]) do |val|
            options[propname] = val
          end
        end
      end
    end.parse!(args)
    
    call(**options)
  end
    
  def self.call(**kwargs)
    new(**kwargs).call
  end
    
  def call
    raise NotImplementedError
  end
end

class SomeScript < ApplicationScript
  const :filename, String
  const :dry_run, T::Boolean, default: false
  
  def call
    pp [filename, dry_run]
  end
end

if $PROGRAM_NAME = __FILE__
  SomeScript.run!
end