Engine server hook

Author: bruno-

lib/tailwindcss/engine.rb

@@ -13,5 +13,14 @@ class Engine < ::Rails::Engine
     config.app_generators do |g|
       g.template_engine :tailwindcss
     end
+
+    server do
+      tailwind_pid = fork do
+        exec(*Tailwindcss::Commands.watch_command(always: true))
+      end
+      at_exit do
+        Process.kill(:INT, tailwind_pid)
+      end
+    end
   end
 end