Guard against missing default entrypoint

hotwired · Sep 3, 2021 · 5c5a85d · 5c5a85d
1 parent deec274
commit 5c5a85d
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/lib/install/turbo_with_node.rb b/lib/install/turbo_with_node.rb
@@ -1,5 +1,9 @@
-say "Import Turbo"
-append_to_file "app/javascript/application.js", %(import "@hotwired/turbo-rails"\n)
+if (js_entrypoint_path = Rails.root.join("app/javascript/application.js")).exist?
+  say "Import Turbo"
+  append_to_file "app/javascript/application.js", %(import "@hotwired/turbo-rails"\n)
+else
+  say "You must import @hotwired/turbo-rails in your JavaScript entrypoint file", :red
+end
 
 say "Install Turbo"
 run "npm i @hotwired/turbo-rails"