From ffaee477bde1aaca2c173b3e7e58a827acbd027d Mon Sep 17 00:00:00 2001
From: Andrew Kress <andrew.kress@gmail.com>
Date: Mon, 29 Jul 2019 10:21:05 -0500
Subject: [PATCH] create an attribute so that webpacker can set its default
 path instead of hardcoding

---
 railties/lib/rails/engine/configuration.rb          | 9 ++-------
 railties/test/application/configuration_test.rb     | 2 +-
 railties/test/isolation/assets/config/webpacker.yml | 1 +
 3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/railties/lib/rails/engine/configuration.rb b/railties/lib/rails/engine/configuration.rb
index 612bd170c6..df31862554 100644
--- a/railties/lib/rails/engine/configuration.rb
+++ b/railties/lib/rails/engine/configuration.rb
@@ -1,14 +1,13 @@
 # frozen_string_literal: true
 
 require "rails/railtie/configuration"
-require "yaml"
 
 module Rails
   class Engine
     class Configuration < ::Rails::Railtie::Configuration
       attr_reader :root
       attr_accessor :middleware
-      attr_writer :eager_load_paths, :autoload_once_paths, :autoload_paths
+      attr_writer :eager_load_paths, :autoload_once_paths, :autoload_paths, :webpacker_path
 
       def initialize(root = nil)
         super()
@@ -88,11 +87,7 @@ def autoload_paths
       end
 
       def webpacker_path
-        if File.file?("#{Rails.root}/config/webpacker.yml")
-          YAML.load_file("#{Rails.root}/config/webpacker.yml")[Rails.env]["source_path"]&.gsub("app/", "")
-        else
-          "javascript"
-        end
+        @webpacker_path ||= "javascript"
       end
     end
   end
diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb
index 38dda20bec..96678c395c 100644
--- a/railties/test/application/configuration_test.rb
+++ b/railties/test/application/configuration_test.rb
@@ -1708,7 +1708,7 @@ def index
       app "development"
       ActiveSupport::Dependencies.autoload_paths.each do |path|
         assert_not_operator path, :ends_with?, "app/assets"
-        assert_not_operator path, :ends_with?, "app/#{Rails.configuration.webpacker_path}"
+        assert_not_operator path, :ends_with?, "app/javascript"
       end
     end
 
diff --git a/railties/test/isolation/assets/config/webpacker.yml b/railties/test/isolation/assets/config/webpacker.yml
index 0b1f43a407..7dfae999c1 100644
--- a/railties/test/isolation/assets/config/webpacker.yml
+++ b/railties/test/isolation/assets/config/webpacker.yml
@@ -1,4 +1,5 @@
 default: &default
+  source_path: app/javascript
   check_yarn_integrity: false
 development:
   <<: *default