Use Sorbet cache, if enabled

Author: amomchilov

lib/tapioca/helpers/sorbet_helper.rb

@@ -31,9 +31,15 @@ def initialize(spoom_context:)
           [key, value]
         end.to_h #: Hash[String, String | bool | nil]
 
+        # `--cache-dir=""` and `--cache-dir=` both disable the cache. We model that with a `nil` value.
+        @cache_dir = options["--cache-dir"].presence #: String?
+
         @parser = options["--parser"] == "prism" ? :prism : :original #: Symbol
       end
 
+      #: String?
+      attr_reader :cache_dir
+
       #: Symbol
       attr_reader :parser
 
@@ -47,6 +53,10 @@ def parse_with_prism? = @parser == :prism
 
     #: (*String sorbet_args) -> Spoom::ExecResult
     def sorbet(*sorbet_args)
+      if sorbet_config.cache_dir
+        sorbet_args << "--cache-dir=#{sorbet_config.cache_dir}"
+      end
+
       if sorbet_config.parse_with_prism?
         sorbet_args << "--parser=prism"
       end