1 files changed, 19 insertions, 0 deletions
diff --git a/railties/lib/rails/tasks/yarn.rake b/railties/lib/rails/tasks/yarn.rake
new file mode 100644
index 0000000000..4fb8586b69
--- /dev/null
+++ b/railties/lib/rails/tasks/yarn.rake
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+namespace :yarn do
+  desc "Install all JavaScript dependencies as specified via Yarn"
+  task :install do
+    # Install only production deps when for not usual envs.
+    valid_node_envs = %w[test development production]
+    node_env = ENV.fetch("NODE_ENV") do
+      rails_env = ENV["RAILS_ENV"]
+      valid_node_envs.include?(rails_env) ? rails_env : "production"
+    end
+    system({ "NODE_ENV" => node_env }, "#{Rails.root}/bin/yarn install --no-progress --frozen-lockfile")
+  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