3 files changed, 11 insertions, 4 deletions
diff --git a/railties/lib/rails/tasks/framework.rake b/railties/lib/rails/tasks/framework.rake
index d42d001b1a..f5586b53f0 100644
--- a/railties/lib/rails/tasks/framework.rake
+++ b/railties/lib/rails/tasks/framework.rake
@@ -1,5 +1,3 @@
-require "active_support/deprecation"
-
 namespace :app do
   desc "Update configs and some other initially generated files (or use just update:configs or update:bin)"
   task update: [ "update:configs", "update:bin", "update:upgrade_guide_info" ]
diff --git a/railties/lib/rails/tasks/routes.rake b/railties/lib/rails/tasks/routes.rake
index 04daaf4a83..215fb2ceb5 100644
--- a/railties/lib/rails/tasks/routes.rake
+++ b/railties/lib/rails/tasks/routes.rake
@@ -1,5 +1,3 @@
-require "active_support/deprecation"
-require "active_support/core_ext/string/strip" # for strip_heredoc
 require "optparse"
 
 desc "Print out all defined routes in match order, with names. Target specific controller with -c option, or grep routes using -g option"
diff --git a/railties/lib/rails/tasks/yarn.rake b/railties/lib/rails/tasks/yarn.rake
new file mode 100644
index 0000000000..2097b7ffef
--- /dev/null
+++ b/railties/lib/rails/tasks/yarn.rake
@@ -0,0 +1,11 @@
+namespace :yarn do
+  desc "Install all JavaScript dependencies as specified via Yarn"
+  task :install do
+    system('./bin/yarn install --no-progress')
+  end
+end
+
+# Run Yarn prior to Sprockets assets precompilation, so dependencies are available for use.
+if Rake::Task.task_defined?("assets:precompile")
+  Rake::Task["assets:precompile"].enhance [ "yarn:install" ]
+end