diff --git a/.gitignore b/.gitignore
index a98b7de2..112d8f88 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,5 @@ tmp
 *.swp
 .rubocop-https---raw-githubusercontent-com-discourse-discourse-master--rubocop-yml
 .byebug_history
+node_modules/
+yarn.lock
diff --git a/lib/message_bus/em_ext.rb b/lib/message_bus/em_ext.rb
deleted file mode 100644
index e3d0b092..00000000
--- a/lib/message_bus/em_ext.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-# frozen_string_literal: true
-module EM
-  def self.reactor_pid
-    @reactor_pid
-  end
-end