class RBS::TypeParamDefaultReferenceError

# File vendor/bundle/ruby/4.0.0/gems/rbs-4.0.3/lib/rbs/errors.rb, line 626
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 vendor/bundle/ruby/4.0.0/gems/rbs-4.0.3/lib/rbs/errors.rb, line 620
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