Exception: RBS::TypeParamDefaultReferenceError

# File 'lib/rbs/errors.rb', line 610

def initialize(type_param, location:)
  super "#{Location.to_string(location)}: the default of #{type_param.name} cannot include optional type parameter"
  @location = location
  @type_param = type_param
end

# File 'lib/rbs/errors.rb', line 616

def self.check!(type_params)
  if errors = AST::TypeParam.validate(type_params)
    error = errors[0] or raise
    error.default_type or raise
    raise new(error, location: error.default_type.location)
  end
end

# File 'lib/rbs/errors.rb', line 608

attr_reader :location