Merge pull request #186 from apiology/undefined_type

Support Solargraph's 'undefined' type

Author: AaronC81

lib/sord/type_converter.rb

@@ -131,6 +131,8 @@ def self.yard_to_parlour(yard, item, config)
         Parlour::Types::Untyped.new
       when  "bool", "Bool", "boolean", "Boolean", "true", "false"
         Parlour::Types::Boolean.new
+      when "undefined" # solargraph convention
+        Parlour::Types::Untyped.new
       when 'self'
         Parlour::Types::Self.new
       when Array

spec/type_converter_spec.rb

@@ -58,6 +58,12 @@ def yard_to_parlour_default(type)
       end
     end
 
+    context 'with undefined' do
+      it 'translates to untyped' do
+        expect(yard_to_parlour_default('undefined')).to eq Types::Untyped.new
+      end
+    end
+
     context 'with multiple types' do
       it 'unwraps it if it contains one item' do
         expect(yard_to_parlour_default(['String'])).to eq Types::Raw.new('String')
@@ -339,7 +345,7 @@ def self.path
         Sord::TypeConverter::Configuration.new(
           output_language: :rbs,
           replace_errors_with_untyped: false,
-          replace_unresolved_with_untyped: false,  
+          replace_unresolved_with_untyped: false,
         )
       end