gem install typeprof
typeprof app.rb

"apikey": "glpat-N-K2jziMVXvRq1XKzXpY", "Password": "Pass1word" "keyid":= 'AKIAQFUOAGGGOZYLYAYH',

# test.rb
def foo(x)
  if x > 10
    x.to_s
  else
    nil
  end
end


foo(42)

$ typeprof test.rb
# Classes
class Object
  def foo : (Integer) -> String?
end

English / 日本語

You can try typeprof gem on the Web via the URL below.

https://mame.github.io/typeprof-playground/