OpenNoodl/dev-docs/tasks/phase-9-styles-overhaul/STYLE-001-token-system-enhancement/CHANGELOG-MVP.md

STYLE-001 MVP Implementation - CHANGELOG

Date: 2026-01-12
Phase: STYLE-001-MVP (Minimal Viable Product)
Status: ✅ Complete - Ready for Testing

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📦 What Was Implemented

This MVP provides the foundation for the Style Tokens system. It includes:

1. Default Tokens - 10 essential design tokens
2. Storage System - Tokens saved in project metadata
3. CSS Injection - Tokens automatically injected into preview
4. Real-time Updates - Changes reflected immediately

What's NOT in this MVP

• ❌ UI Panel to edit tokens
• ❌ Token Picker component
• ❌ Import/Export functionality
• ❌ All token categories (only essentials)

These will come in future phases.

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🗂️ Files Created

Editor Side (Token Management)

packages/noodl-editor/src/editor/src/models/StyleTokens/
├── DefaultTokens.ts          ✅ NEW - 10 default tokens
├── StyleTokensModel.ts       ✅ NEW - Token management model
└── index.ts                  ✅ NEW - Exports

Purpose: Manage tokens in the editor, save to project metadata.

Viewer Side (CSS Injection)

packages/noodl-viewer-react/src/
├── style-tokens-injector.ts  ✅ NEW - Injects CSS into preview
└── viewer.jsx                ✅ MODIFIED - Initialize injector

Purpose: Load tokens from project and inject as CSS custom properties.

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🎨 Default Tokens Included

Token	Value	Category	Usage
--primary	#3b82f6 (Blue)	color	Primary buttons, links
--background	#ffffff (White)	color	Page background
--foreground	#0f172a (Near black)	color	Text color
--border	#e2e8f0 (Light gray)	color	Borders
--space-sm	8px	spacing	Small padding/margins
--space-md	16px	spacing	Medium padding/margins
--space-lg	24px	spacing	Large padding/margins
--radius-md	8px	border	Border radius
--shadow-sm	0 1px 2px ...	shadow	Small shadow
--shadow-md	0 4px 6px ...	shadow	Medium shadow

---

🔧 Technical Implementation

1. Data Flow

ProjectModel
    ↓ (stores metadata)
StyleTokensModel.ts
    ↓ (loads/saves tokens)
StyleTokensInjector.ts
    ↓ (generates CSS)
<style> in DOM
    ↓ (CSS variables available)
Visual Elements

2. Storage Format

Tokens are stored in project metadata:

{
  "styleTokens": {
    "--primary": "#3b82f6",
    "--background": "#ffffff",
    "--foreground": "#0f172a"
    // ... more tokens
  }
}

3. CSS Injection

Tokens are injected as CSS custom properties:

:root {
  --primary: #3b82f6;
  --background: #ffffff;
  --foreground: #0f172a;
  --border: #e2e8f0;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --radius-md: 8px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

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✅ How to Test

See TESTING-GUIDE.md for detailed testing instructions.

Quick Test

1. Start the editor: npm run dev
2. Create a new project
3. Add a visual node (e.g., Group, Text)
4. In the styles, use a token:

   background: var(--primary)
   padding: var(--space-md)
   border-radius: var(--radius-md)
   

5. Preview should show: Blue background, 16px padding, 8px rounded corners

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🔄 Integration Points

For Future Development

STYLE-002 (Element Configs) will need:

• Access to StyleTokensModel to read available tokens
• Token references in variant definitions

STYLE-003 (Presets) will need:

• StyleTokensModel.setToken() to apply preset values
• Bulk token updates

STYLE-004 (Property Panel) will need:

• Token picker UI component
• Visual preview of token values

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🐛 Known Limitations

1. No UI to edit tokens - Must be done via browser DevTools console for now:

   // In browser console:
   window.ProjectModel.instance.setMetaData('styleTokens', {
     '--primary': '#ff0000', // Red instead of blue
     '--space-md': '20px' // 20px instead of 16px
   });
   

2. Limited token set - Only 10 tokens for MVP. More categories coming in STYLE-001 full version.

3. No validation - Token values are not validated. Invalid CSS will fail silently.

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📊 Metrics

• Files Created: 4
• Files Modified: 1
• Lines of Code: ~400
• Default Tokens: 10
• Time to Implement: ~4-6 hours
• Test Coverage: Manual testing required

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🎯 Success Criteria

• Tokens are defined with sensible defaults
• Tokens are stored in project metadata
• Tokens are injected as CSS variables
• Tokens can be used in element styles
• Changes persist across editor restarts
• TypeScript types are properly defined
• No eslint errors in new code

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🚀 Next Steps

1. Test the MVP - Follow TESTING-GUIDE.md
2. Gather feedback - Does it work as expected?
3. Plan STYLE-001 Full - UI panel, more tokens, token picker
4. Continue to STYLE-002 - Element configs and variants

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Created: 2026-01-12
Last Updated: 2026-01-12