Add comprehensive debug output to understand generator method execution

Author: justin808

lib/generators/react_on_rails/base_generator.rb

@@ -200,44 +200,66 @@ def add_base_gems_to_gemfile
       end
 
       def add_js_dependencies
-        major_minor_patch_only = /\A\d+\.\d+\.\d+\z/
-        if ReactOnRails::VERSION.match?(major_minor_patch_only)
-          package_json.manager.add(["react-on-rails@#{ReactOnRails::VERSION}"])
-        else
-          # otherwise add latest
-          puts "Adding the latest react-on-rails NPM module. Double check this is correct in package.json"
-          package_json.manager.add(["react-on-rails"])
-        end
+        puts "=== DEBUG: add_js_dependencies method called ==="
+
+        begin
+          major_minor_patch_only = /\A\d+\.\d+\.\d+\z/
+          if ReactOnRails::VERSION.match?(major_minor_patch_only)
+            puts "Adding react-on-rails@#{ReactOnRails::VERSION}"
+            package_json.manager.add(["react-on-rails@#{ReactOnRails::VERSION}"])
+          else
+            # otherwise add latest
+            puts "Adding the latest react-on-rails NPM module. Double check this is correct in package.json"
+            package_json.manager.add(["react-on-rails"])
+          end
 
-        puts "Adding React dependencies"
-        package_json.manager.add([
-                                   "react",
-                                   "react-dom",
-                                   "@babel/preset-react",
-                                   "prop-types",
-                                   "babel-plugin-transform-react-remove-prop-types",
-                                   "babel-plugin-macros"
-                                 ])
-
-        puts "Adding CSS handlers"
-
-        package_json.manager.add(%w[
-                                   css-loader
-                                   css-minimizer-webpack-plugin
-                                   mini-css-extract-plugin
-                                   style-loader
-                                 ])
-
-        puts "Adding dev dependencies"
-        package_json.manager.add([
-                                   "@pmmmwh/react-refresh-webpack-plugin",
-                                   "react-refresh"
-                                 ], type: :dev)
+          puts "Adding React dependencies"
+          package_json.manager.add([
+                                     "react",
+                                     "react-dom",
+                                     "@babel/preset-react",
+                                     "prop-types",
+                                     "babel-plugin-transform-react-remove-prop-types",
+                                     "babel-plugin-macros"
+                                   ])
+
+          puts "Adding CSS handlers"
+          package_json.manager.add(%w[
+                                     css-loader
+                                     css-minimizer-webpack-plugin
+                                     mini-css-extract-plugin
+                                     style-loader
+                                   ])
+
+          puts "Adding dev dependencies"
+          package_json.manager.add([
+                                     "@pmmmwh/react-refresh-webpack-plugin",
+                                     "react-refresh"
+                                   ], type: :dev)
+          puts "=== DEBUG: add_js_dependencies completed successfully ==="
+        rescue => e
+          puts "=== ERROR in add_js_dependencies: #{e.message} ==="
+          puts "=== ERROR backtrace: #{e.backtrace.first(3).join(', ')} ==="
+          raise
+        end
       end
 
       def install_js_dependencies
         puts "Installing JavaScript dependencies"
-        run "yarn install"
+
+        # Detect which package manager to use
+        if File.exist?(File.join(destination_root, "yarn.lock"))
+          run "yarn install"
+        elsif File.exist?(File.join(destination_root, "pnpm-lock.yaml"))
+          run "pnpm install"
+        elsif File.exist?(File.join(destination_root, "package-lock.json"))
+          run "npm install"
+        elsif File.exist?(File.join(destination_root, "package.json"))
+          # Default to npm if no lock file exists but package.json does
+          run "npm install"
+        else
+          puts "No package.json found, skipping JavaScript dependency installation"
+        end
       rescue => e
         puts "Error installing JavaScript dependencies: #{e.message}"
         raise