Fix React on Rails v15 generator and restore colorized output

- Restore colorized URLs in bin/dev help and generator messages after revert
- Fix pack generator template to use single HelloWorld.jsx component
- Remove client/server split in favor of simpler component structure
- Update generator to create unified component with documentation
- Fix ESLint and RuboCop style issues

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

Gemfile.lock

@@ -7,7 +7,7 @@ PATH
       execjs (~> 2.5)
       rails (>= 5.2)
       rainbow (~> 3.0)
-      shakapacker (~> 8.2)
+      shakapacker (~> 8.0)
 
 GEM
   remote: https://rubygems.org/

TODO.md

@@ -0,0 +1,118 @@
+# React on Rails TODO
+
+## Generator Improvements
+
+### HelloWorld Component Structure
+- [x] Fix bad import in HelloWorld.server.jsx (server importing from client)
+- [x] Simplify to single HelloWorld.jsx file with documentation
+- [ ] **Consider alternative approach**: Create second example component showing client/server split
+  - Add `client_server_different.jsx` in sibling directory like `/examples/` or `/advanced/`
+  - Show real-world use case (React Router, styled-components, etc.)
+  - Keep HelloWorld simple for beginners
+
+### File Organization
+- [x] **Improved ror_components directory structure**
+  - Documentation now suggests moving shared components to `../components/` directory
+  - Keeps ror_components clean for React on Rails specific entry points
+  - Recommended structure:
+    ```
+    src/HelloWorld/
+    ├── components/
+    │   └── HelloWorld.jsx          # Shared component implementation
+    └── ror_components/
+        ├── HelloWorld.client.jsx   # Client entry point (when needed)
+        └── HelloWorld.server.jsx   # Server entry point (when needed)
+    ```
+- [ ] **Consider adding generator flag to create this structure automatically**
+
+### Generator Options
+- [ ] **Add generator flags for different patterns**
+  - `--simple` (default): Single component file
+  - `--split`: Generate client/server split example
+  - `--example-name`: Customize component name beyond HelloWorld
+
+## Documentation Improvements
+
+### Component Architecture Guide
+- [ ] **Add comprehensive docs on client/server patterns**
+  - When to use single vs split files
+  - Common libraries requiring server setup (React Router, styled-components, Apollo)
+  - Migration path from simple to split architecture
+  - Auto-registration behavior explanation
+
+### Code Comments
+- [x] Add inline documentation to HelloWorld.jsx explaining split pattern
+- [ ] Add JSDoc comments for better IDE support
+- [ ] Include links to relevant documentation sections
+
+## Testing Infrastructure
+- [ ] **Test generator output for both simple and split patterns**
+- [ ] **Validate that auto-registration works correctly**
+- [ ] **Add integration tests for client/server rendering differences**
+
+## Developer Experience
+- [ ] **bin/dev help command enhancements**
+  - [x] Add emojis and colors for better readability
+  - [ ] Add section about component development patterns
+  - [ ] Include troubleshooting for client/server split issues
+
+- [ ] **Babel Configuration Conflict Detection**
+  - [ ] Add validation in generator/initializer to detect conflicting Babel configs
+  - [ ] Improve error messaging for duplicate preset issues
+  - [ ] Common conflict: babel.config.js + package.json "babel" section
+  - [ ] Specific guidance for yalc development workflow
+  - [ ] Add troubleshooting section for this common issue:
+    ```
+    ❌ BABEL CONFIGURATION CONFLICT DETECTED
+    Found duplicate Babel configurations:
+    • babel.config.js ✓ (recommended)
+    • package.json "babel" section ❌ (conflicting)
+
+    🔧 FIX: Remove the "babel" section from package.json
+    ```
+
+### IDE Support
+- [ ] **Improve TypeScript support**
+  - Add .d.ts files for better type inference
+  - Document TypeScript patterns for client/server split
+  - Consider TypeScript generator templates
+
+## Performance & Bundle Analysis
+- [ ] **Bundle splitting documentation**
+  - How React on Rails handles client/server bundles
+  - Best practices for code splitting
+  - webpack bundle analysis guidance
+
+## Real-World Examples
+- [ ] **Create example apps showing advanced patterns**
+  - React Router with SSR
+  - styled-components with server-side rendering
+  - Apollo Client hydration
+  - Next.js-style patterns
+
+## Migration Guide
+- [ ] **Document upgrade paths**
+  - Converting from Webpacker to Shakapacker
+  - Migrating from single to split components
+  - Updating existing projects to new patterns
+
+## Community & Ecosystem
+- [ ] **Plugin ecosystem considerations**
+  - Standard patterns for community components
+  - Guidelines for React on Rails compatible libraries
+  - Template repository for component patterns
+
+---
+
+## Current Known Issues
+- Generator installer still has remaining issues (mentioned in context)
+- Version mismatch warnings with yalc during development
+- Need clearer documentation on when to use different patterns
+- **Babel configuration conflicts** - Common during yalc development when package.json and babel.config.js both define presets
+
+## Priority Order
+1. Fix remaining generator installer issues
+2. Improve HelloWorld component documentation
+3. Add alternative example showing client/server split
+4. Create comprehensive architecture documentation
+5. Add generator flags for different patterns

lib/generators/react_on_rails/generator_messages.rb

@@ -46,39 +46,37 @@ def helpful_message_after_installation(component_name: "HelloWorld")
 
       <<~MSG
 
-                ╔════════════════════════════════════════════════════════════════════════╗
-                ║  🎉 React on Rails Successfully Installed!                             ║
-                ╚════════════════════════════════════════════════════════════════════════╝
-
-                📋 QUICK START:
-                ─────────────────────────────────────────────────────────────────────────
-                1. Install dependencies:
-                   #{Rainbow("bundle && #{package_manager} install").cyan}
-
-                2. Start the app:
-                   ./bin/dev              # HMR (Hot Module Replacement) mode
-                   ./bin/dev static       # Static bundles (no HMR, faster initial load)
-                   ./bin/dev prod         # Production-like mode for testing
-                   ./bin/dev help         # See all available options
-        #{process_manager_section}
-
-                3. Visit: http://localhost:3000/hello_world
-        #{shakapacker_status}
-                ✨ KEY FEATURES:
-                ─────────────────────────────────────────────────────────────────────────
-                • Auto-registration enabled - Your layout only needs:
-                  <%= javascript_pack_tag %>
-                  <%= stylesheet_pack_tag %>
-
-                • Server-side rendering - Enable it in app/views/hello_world/index.html.erb:
-                  <%= react_component("#{component_name}", props: @hello_world_props, prerender: true) %>
-
-                📚 LEARN MORE:
-                ─────────────────────────────────────────────────────────────────────────
-                • Documentation: https://www.shakacode.com/react-on-rails/docs/
-                • Webpack customization: https://github.com/shakacode/shakapacker#webpack-configuration
-
-                💡 TIP: Run 'bin/dev help' for development server options and troubleshooting#{testing_section}
+        ╔════════════════════════════════════════════════════════════════════════╗
+        ║  🎉 React on Rails Successfully Installed!                             ║
+        ╚════════════════════════════════════════════════════════════════════════╝
+        #{process_manager_section}#{shakapacker_status}
+        📋 QUICK START:
+        ─────────────────────────────────────────────────────────────────────────
+        1. Install dependencies:
+           #{Rainbow("bundle && #{package_manager} install").cyan}
+
+        2. Start the app:
+           ./bin/dev              # HMR (Hot Module Replacement) mode
+           ./bin/dev static       # Static bundles (no HMR, faster initial load)
+           ./bin/dev prod         # Production-like mode for testing
+           ./bin/dev help         # See all available options
+
+        3. Visit: #{Rainbow('http://localhost:3000/hello_world').cyan.underline}
+        ✨ KEY FEATURES:
+        ─────────────────────────────────────────────────────────────────────────
+        • Auto-registration enabled - Your layout only needs:
+          <%= javascript_pack_tag %>
+          <%= stylesheet_pack_tag %>
+
+        • Server-side rendering - Enabled with prerender option in app/views/hello_world/index.html.erb:
+          <%= react_component("#{component_name}", props: @hello_world_props, prerender: true) %>
+
+        📚 LEARN MORE:
+        ─────────────────────────────────────────────────────────────────────────
+        • Documentation: #{Rainbow('https://www.shakacode.com/react-on-rails/docs/').cyan.underline}
+        • Webpack customization: #{Rainbow('https://github.com/shakacode/shakapacker#webpack-configuration').cyan.underline}
+
+        💡 TIP: Run 'bin/dev help' for development server options and troubleshooting#{testing_section}
       MSG
     end
 
@@ -112,12 +110,12 @@ def build_testing_section
       <<~TESTING
 
 
-                🧪 TESTING SETUP (Optional):
-                ─────────────────────────────────────────────────────────────────────────
-                For JavaScript testing with asset compilation, add this to your RSpec config:
+        🧪 TESTING SETUP (Optional):
+        ─────────────────────────────────────────────────────────────────────────
+        For JavaScript testing with asset compilation, add this to your RSpec config:
 
-                # In spec/rails_helper.rb or spec/spec_helper.rb:
-                ReactOnRails::TestHelper.configure_rspec_to_compile_assets(config)
+        # In spec/rails_helper.rb or spec/spec_helper.rb:
+        ReactOnRails::TestHelper.configure_rspec_to_compile_assets(config)
       TESTING
     end
 

lib/generators/react_on_rails/react_no_redux_generator.rb

@@ -13,8 +13,8 @@ class ReactNoReduxGenerator < Rails::Generators::Base
 
       def copy_base_files
         base_js_path = "base/base"
-        base_files = %w[app/javascript/src/HelloWorld/ror_components/HelloWorld.client.jsx
-                        app/javascript/src/HelloWorld/ror_components/HelloWorld.server.jsx]
+        base_files = %w[app/javascript/src/HelloWorld/ror_components/HelloWorld.jsx
+                        app/javascript/src/HelloWorld/ror_components/HelloWorld.module.css]
         base_files.each { |file| copy_file("#{base_js_path}/#{file}", file) }
       end
 

lib/generators/react_on_rails/templates/base/base/app/javascript/src/HelloWorld/ror_components/HelloWorld.client.jsx

@@ -0,0 +1,39 @@
+import React, { useState } from 'react';
+import * as style from './HelloWorld.module.css';
+
+// This component works for both client and server rendering.
+//
+// For cases where you need different client/server behavior (e.g., React Router,
+// styled-components, or conditional hydration), create separate files:
+//
+// 1. Move this component to ../components/HelloWorld.jsx
+// 2. Create HelloWorld.client.jsx:
+//    import HelloWorld from '../components/HelloWorld';
+//    // Add client-specific setup (Router, providers, etc.)
+//    export default HelloWorld;
+//
+// 3. Create HelloWorld.server.jsx:
+//    import HelloWorld from '../components/HelloWorld';
+//    // Add server-specific setup (StaticRouter, etc.)
+//    export default HelloWorld;
+//
+// React on Rails will auto-register both .client and .server versions.
+
+const HelloWorld = (props) => {
+  const [name, setName] = useState(props.name);
+
+  return (
+    <div>
+      <h3>Hello, {name}!</h3>
+      <hr />
+      <form>
+        <label className={style.bright} htmlFor="name">
+          Say hello to:
+          <input id="name" type="text" value={name} onChange={(e) => setName(e.target.value)} />
+        </label>
+      </form>
+    </div>
+  );
+};
+
+export default HelloWorld;