Merge pull request rails#46798 from skipkayhil/eager-load-rails-backtrace-cleaner

Eager load Rails::BacktraceCleaner

Author: byroot

railties/lib/rails.rb

@@ -13,6 +13,7 @@
 require "rails/version"
 require "rails/deprecator"
 require "rails/application"
+require "rails/backtrace_cleaner"
 
 require "active_support/railtie"
 require "action_dispatch/railtie"
@@ -49,11 +50,7 @@ def configuration
     end
 
     def backtrace_cleaner
-      @backtrace_cleaner ||= begin
-        # Relies on Active Support, so we have to lazy load to postpone definition until Active Support has been loaded
-        require "rails/backtrace_cleaner"
-        Rails::BacktraceCleaner.new
-      end
+      @backtrace_cleaner ||= Rails::BacktraceCleaner.new
     end
 
     # Returns a Pathname object of the current Rails project,