Move EE-specific files to a standalone directory

app/helpers/gitlab_routing_helper.rb

 # Shorter routing method for some project items
 module GitlabRoutingHelper
+  include EE::GitlabRoutingHelper
+
   extend ActiveSupport::Concern
 
   included do

app/helpers/issues_helper.rb

 module IssuesHelper
+  include EE::IssuesHelper
+
   def issue_css_classes(issue)
     classes = "issue"
     classes << " closed" if issue.closed?

app/helpers/namespaces_helper.rb

 module NamespacesHelper
+  include EE::NamespaceHelper
+
   def namespace_id_from(params)
     params.dig(:project, :namespace_id) || params[:namespace_id]
   end

config/application.rb

@@ -37,7 +37,16 @@ module Gitlab
     config.generators.templates.push("#{config.root}/generator_templates")
 
     # EE specific paths.
-    config.eager_load_paths.push("#{config.root}/app/workers/concerns")
+    config.eager_load_paths.push(*%W[
+      #{config.root}/ee/app/controllers
+      #{config.root}/ee/app/helpers
+      #{config.root}/ee/app/mailers
+      #{config.root}/ee/app/models
+      #{config.root}/ee/app/models/concerns
+      #{config.root}/ee/app/policies
+      #{config.root}/ee/app/services
+      #{config.root}/ee/app/workers
+    ])
 
     # Only load the plugins named here, in the order given (default is alphabetical).
     # :all can be used as a placeholder for all plugins not explicitly named.

config/initializers/1_settings.rb

 require_dependency Rails.root.join('lib/gitlab') # Load Gitlab as soon as possible
-require_dependency Rails.root.join('lib/ee') # Load EE as soon as possible
 
 class Settings < Settingslogic
   source ENV.fetch('GITLAB_CONFIG') { "#{Rails.root}/config/gitlab.yml" }

app/controllers/admin/geo_nodes_controller.rb → ee/app/controllers/admin/geo_nodes_controller.rb

@@ -2,6 +2,8 @@ class Admin::GeoNodesController < Admin::ApplicationController
   before_action :check_license, except: [:index, :destroy]
   before_action :load_node, only: [:edit, :update, :destroy, :repair, :toggle, :status]
 
+  helper EE::GeoHelper
+
   def index
     @nodes = GeoNode.all.order(:id)
     @node = GeoNode.new

lib/ee.rb

-# Define the EE module
-module EE
-end