yoga-integration-example.js

#!/usr/bin/env node

/**
 * Example: How to Use Yoga Layout Engine with Claude Code
 * 
 * Note: yoga.wasm in Claude Code is a compiled WebAssembly binary
 * that provides flexbox layout calculations. It's not a UI itself,
 * but a layout engine that calculates positions and sizes.
 */

import { readFileSync } from 'fs';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

// Example of how you might load and use yoga.wasm
// (This is conceptual - actual implementation would need yoga-layout npm package)

class YogaLayoutExample {
  constructor() {
    this.wasmPath = '/usr/local/share/nvm/versions/node/v20.19.0/lib/node_modules/@anthropic-ai/claude-code/yoga.wasm';
  }

  /**
   * To actually use yoga.wasm, you would need to:
   * 1. Install yoga-layout or yoga-wasm npm package
   * 2. Initialize the WASM module
   * 3. Create layout nodes
   * 4. Calculate layouts
   */
  async demonstrateYogaUsage() {
    console.log('🧘 Yoga Layout Engine Integration Guide\n');
    console.log('================================\n');
    
    console.log('1. INSTALL YOGA PACKAGE:');
    console.log('   npm install yoga-layout\n');
    
    console.log('2. BASIC USAGE EXAMPLE:');
    console.log(`
   import yoga from 'yoga-layout';
   
   // Create root node
   const root = yoga.Node.create();
   root.setWidth(500);
   root.setHeight(300);
   root.setFlexDirection(yoga.FLEX_DIRECTION_ROW);
   root.setJustifyContent(yoga.JUSTIFY_CENTER);
   
   // Create child nodes
   const child1 = yoga.Node.create();
   child1.setWidth(100);
   child1.setHeight(100);
   
   const child2 = yoga.Node.create();
   child2.setFlexGrow(1);
   child2.setHeight(100);
   
   // Add children to root
   root.insertChild(child1, 0);
   root.insertChild(child2, 1);
   
   // Calculate layout
   root.calculateLayout(500, 300, yoga.DIRECTION_LTR);
   
   // Get computed layouts
   console.log('Child 1 position:', {
     left: child1.getComputedLeft(),
     top: child1.getComputedTop(),
     width: child1.getComputedWidth(),
     height: child1.getComputedHeight()
   });
   `);
    
    console.log('\n3. TERMINAL UI INTEGRATION:');
    console.log(`
   // Use calculated layouts to render terminal UI
   import blessed from 'blessed';
   
   const screen = blessed.screen();
   
   // Apply yoga-calculated positions to blessed boxes
   const box = blessed.box({
     left: child1.getComputedLeft(),
     top: child1.getComputedTop(),
     width: child1.getComputedWidth(),
     height: child1.getComputedHeight(),
     content: 'Yoga-positioned box',
     border: { type: 'line' }
   });
   
   screen.append(box);
   screen.render();
   `);
    
    console.log('\n4. CUSTOM CLAUDE CODE INTEGRATION:');
    console.log(`
   // Create a custom layout manager for Claude Code output
   class ClaudeCodeLayoutManager {
     constructor() {
       this.yoga = require('yoga-layout');
       this.root = this.yoga.Node.create();
     }
     
     createLayout(config) {
       // Define your terminal UI layout
       this.root.setWidth(process.stdout.columns);
       this.root.setHeight(process.stdout.rows);
       
       // Add panels for swarm status, logs, etc.
       const statusPanel = this.yoga.Node.create();
       statusPanel.setFlexGrow(1);
       statusPanel.setMinHeight(5);
       
       const logPanel = this.yoga.Node.create();
       logPanel.setFlexGrow(2);
       
       this.root.insertChild(statusPanel, 0);
       this.root.insertChild(logPanel, 1);
       
       // Calculate and return positions
       this.root.calculateLayout();
       
       return {
         status: this.getNodeLayout(statusPanel),
         logs: this.getNodeLayout(logPanel)
       };
     }
     
     getNodeLayout(node) {
       return {
         x: node.getComputedLeft(),
         y: node.getComputedTop(),
         width: node.getComputedWidth(),
         height: node.getComputedHeight()
       };
     }
   }
   `);
    
    console.log('\n5. CURRENT STATUS:');
    console.log('   ✓ yoga.wasm exists in Claude Code installation');
    console.log('   ✓ 88KB compiled WebAssembly binary');
    console.log('   ⚠ Not currently used by Claude Code');
    console.log('   ⚠ Would need yoga-layout npm package to utilize');
    
    console.log('\n6. POTENTIAL USE CASES:');
    console.log('   • Terminal dashboard layouts');
    console.log('   • Multi-pane code editors');
    console.log('   • Swarm visualization interfaces');
    console.log('   • Responsive CLI layouts');
    console.log('   • Complex output formatting');
  }
  
  /**
   * Check if yoga.wasm exists in Claude Code
   */
  checkYogaWasm() {
    try {
      const stats = readFileSync(this.wasmPath);
      console.log(`\n✅ yoga.wasm found: ${(stats.length / 1024).toFixed(2)}KB`);
      return true;
    } catch (error) {
      console.log('\n❌ yoga.wasm not found at expected location');
      return false;
    }
  }
}

// Run the example
const example = new YogaLayoutExample();
example.demonstrateYogaUsage();
example.checkYogaWasm();

console.log('\n📝 To actually modify Claude Code\'s UI:');
console.log('   1. Fork Claude Code repository');
console.log('   2. Integrate yoga-layout package');
console.log('   3. Implement custom terminal UI components');
console.log('   4. Use yoga for layout calculations');
console.log('   5. Submit PR or maintain custom fork\n');