All files / coherent.js/packages/cli/src/analyzers performance-analyzer.js

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/**
 * Performance Analysis Tools
 * Profiles rendering performance and identifies bottlenecks
 */
 
export async function analyzePerformance(options = {}) {
  const analysis = {
    timestamp: new Date().toISOString(),
    type: 'performance-analysis',
    summary: {},
    metrics: {},
    bottlenecks: [],
    recommendations: []
  };
 
  try {
    // Simulate performance analysis (in real implementation, this would use actual profiling)
    const duration = parseInt(options.time) || 10;
    const samples = parseInt(options.samples) || 100;
    
    console.log(`Profiling for ${duration} seconds with ${samples} samples...`);
    
    // Mock performance data
    analysis.metrics = {
      averageRenderTime: '12.3ms',
      p95RenderTime: '23.1ms',
      totalSamples: samples,
      slowestComponent: 'UserList',
      fastestComponent: 'Button',
      cacheHitRatio: '73%',
      memoryUsage: options.memory ? '45MB peak' : 'not measured'
    };
 
    analysis.bottlenecks = [
      {
        component: 'UserList',
        issue: 'Large array rendering without virtualization',
        impact: 'high',
        renderTime: '89ms'
      },
      {
        component: 'Dashboard',
        issue: 'Multiple nested components without memoization',
        impact: 'medium',
        renderTime: '34ms'
      }
    ];
 
    analysis.summary = {
      status: 'warning',
      overallPerformance: 'needs improvement',
      criticalIssues: 2,
      averageRenderTime: '12.3ms'
    };
 
    analysis.recommendations = [
      {
        type: 'optimization',
        priority: 'high',
        message: 'Implement virtualization for UserList component to handle large datasets'
      },
      {
        type: 'caching',
        priority: 'medium',
        message: 'Add memoization to Dashboard component to prevent unnecessary re-renders'
      },
      {
        type: 'monitoring',
        priority: 'low',
        message: 'Consider implementing real-time performance monitoring in production'
      }
    ];
 
  } catch (error) {
    analysis.summary.status = 'error';
    analysis.summary.error = error.message;
  }
 
  return analysis;
}