Variadic arguments don't work in some scenarios

[jaredoconnor]

Working Example

class MyVariadicClass
  def my_method required, *variadic
  end
end
class MyOptionalClass
  def my_method required, optional: ''
  end
end

class MyVariadicClass
  def my_method: (String required, *String variadic) -> void
end
class MyOptionalClass
  def my_method: (String required, ?optional: String) -> void
end

Failing Example

class MyClass
  def my_method required, *variadic, optional: ''
  end
end

class MyClass
  def my_method: (String required, *String variadic, ?optional: String) -> void
end

demo/commands.rb:12:16: [error] Method parameters are incompatible with declaration `(::String, *::String, ?optional: ::String) -> void`
│ Diagnostic ID: Ruby::MethodArityMismatch
│
└   def my_method required, *variadic, optional: ''

[soutaro]

An improvement ships with 1.0.0 related to this. #552