specify `skip_yarn` option in API-only Application (#27309)

2 files changed, 12 insertions, 3 deletions

diff --git a/railties/lib/rails/generators/rails/app/app_generator.rb b/railties/lib/rails/generators/rails/app/app_generator.rb
index 20bc45fee8..a8586d56dd 100644
--- a/railties/lib/rails/generators/rails/app/app_generator.rb
+++ b/railties/lib/rails/generators/rails/app/app_generator.rb
@@ -186,9 +186,11 @@ module Rails
           raise Error, "Invalid value for --database option. Supported for preconfiguration are: #{DATABASES.join(", ")}."
         end
 
-        # Force sprockets to be skipped when generating API only apps.
+        # Force sprockets and yarn to be skipped when generating API only apps.
         # Can't modify options hash as it's frozen by default.
-        self.options = options.merge(skip_sprockets: true, skip_javascript: true).freeze if options[:api]
+        if options[:api]
+          self.options = options.merge(skip_sprockets: true, skip_javascript: true, skip_yarn: true).freeze
+        end
       end
 
       public_task :set_default_accessors!
@@ -346,6 +348,10 @@ module Rails
         end
       end
 
+      def delete_bin_yarn_if_api_option
+        remove_file "bin/yarn" if options[:api]
+      end
+
       def finish_template
         build(:leftovers)
       end
diff --git a/railties/test/generators/api_app_generator_test.rb b/railties/test/generators/api_app_generator_test.rb
index dc2872e45e..c54d9cc599 100644
--- a/railties/test/generators/api_app_generator_test.rb
+++ b/railties/test/generators/api_app_generator_test.rb
@@ -105,6 +105,7 @@ class ApiAppGeneratorTest < Rails::Generators::TestCase
       %w(app/assets
          app/helpers
          app/views/layouts/application.html.erb
+         bin/yarn
          config/initializers/assets.rb
          config/initializers/cookies_serializer.rb
          lib/assets
@@ -115,6 +116,8 @@ class ApiAppGeneratorTest < Rails::Generators::TestCase
          public/500.html
          public/apple-touch-icon-precomposed.png
          public/apple-touch-icon.png
-         public/favicon.ico)
+         public/favicon.icon
+         vendor/package.json
+      )
     end
 end