Strip spaces from type definitions

Signed-off-by: Alexandre Terrasa <alexandre.terrasa@shopify.com>

lib/rubocop/cop/sorbet/forbid_t_struct.rb

@@ -102,7 +102,7 @@ def on_send(node)
         end
 
         class Property
-          attr_reader :node, :kind, :name, :type, :default, :factory
+          attr_reader :node, :kind, :name, :default, :factory
 
           def initialize(node, kind, name, type, default:, factory:)
             @node = node
@@ -151,6 +151,10 @@ def initialize_assign
           def nilable?
             type.start_with?("T.nilable(")
           end
+
+          def type
+            @type.gsub(/[[:space:]]+/, "").strip
+          end
         end
 
         # @!method t_struct?(node)

spec/rubocop/cop/sorbet/forbid_t_struct_spec.rb

@@ -408,5 +408,31 @@ def initialize(baz:, foo: nil, bar: nil)
 
       expect(autocorrect_source(source)).to(eq(corrected))
     end
+
+    it "strips new lines from type definitions" do
+      source = <<~RUBY
+        class Foo < T::Struct
+          const :foo, T.nilable(
+            Integer
+          )
+        end
+      RUBY
+
+      corrected = <<~RUBY
+        class Foo
+          extend T::Sig
+
+          sig { returns(T.nilable(Integer)) }
+          attr_reader :foo
+
+          sig { params(foo: T.nilable(Integer)).void }
+          def initialize(foo: nil)
+            @foo = foo
+          end
+        end
+      RUBY
+
+      expect(autocorrect_source(source)).to(eq(corrected))
+    end
   end
 end