agentsqripts/cli/analyze-performance.js

Comprehensive static code analysis toolkit for identifying technical debt, security vulnerabilities, performance issues, and code quality problems

#!/usr/bin/env node

/**
 * @file Command-line interface for performance analysis and optimization opportunity detection
 * @description Single responsibility: Provide interactive CLI for identifying performance bottlenecks
 * 
 * This CLI tool serves as the performance analysis interface for the AgentSqripts platform,
 * detecting algorithmic inefficiencies, I/O bottlenecks, memory issues, and concurrency
 * optimization opportunities. It implements severity filtering, category-based analysis,
 * and effort-based prioritization to support performance optimization workflows.
 * 
 * Design rationale:
 * - Performance-focused CLI design enables systematic optimization workflows
 * - Category filtering allows targeted optimization efforts (Algorithm, I/O, Memory, etc.)
 * - Effort-level filtering helps prioritize quick wins vs complex refactoring
 * - Quantified impact metrics enable ROI-based optimization decisions
 * - Multiple output formats support both human analysis and automated tooling
 */

const fs = require('fs');
const path = require('path');
const { analyzeProjectPerformance, analyzeFilePerformance } = require('../lib/performance/analyzePerformance');
const { formatResults, getGradeEmoji, formatSeverity } = require('./lib/commonFormatters');
const { createHelpFunction } = require('./lib/helpFormatter');
const { parseArgs: sharedParseArgs } = require('./lib/argumentParser');
const { handleAnalysisError, exitOnSeverityThreshold } = require('./lib/errorHandler');
const { createSummaryFormatter, createRecommendationsSection, createTopIssuesSection } = require('./lib/summaryFormatter');
const { createDetailedFormatter, formatIssueWithIcons } = require('./lib/detailedFormatter');

/**
 * Display help information
 */
const showHelp = createHelpFunction({
  command: 'analyze-performance.js',
  description: 'Analyzes code for performance bottlenecks including O(n²) algorithmic patterns, blocking sync I/O,\nJSON operations in loops, serial awaits, large inline objects, and other optimization opportunities.',
  options: [
    { flag: '--extensions <exts>', description: 'Comma-separated list of file extensions (default: .js,.ts,.jsx,.tsx)' },
    { flag: '--output-format <fmt>', description: 'Output format: json, summary, detailed (default: summary)' },
    { flag: '--severity <level>', description: 'Minimum severity to report: LOW, MEDIUM, HIGH (default: LOW)' },
    { flag: '--category <cat>', description: 'Filter by category: Algorithm, I/O, CPU, Memory, Concurrency (default: all)' },
    { flag: '--effort <level>', description: 'Filter by effort level: 1, 2, 3 (default: all)' },
    { flag: '--help', description: 'Show this help message' }
  ],
  modes: '  file                    Analyze a single file\n  project                 Analyze entire project (default)',
  examples: [
    'node analyze-performance.js .',
    'node analyze-performance.js --severity HIGH src/',
    'node analyze-performance.js --output-format json --extensions .js,.ts .',
    'node analyze-performance.js --category Algorithm --effort 1 src/'
  ],
  output: '  The tool identifies performance bottlenecks by checking:\n  - O(n²) algorithmic patterns (nested loops, inefficient array methods)\n  - Blocking synchronous I/O operations (fs.readFileSync, execSync)\n  - JSON operations in hot paths (stringify/parse in loops)\n  - Serial await chains that could be parallelized\n  - Large inline objects and strings (memory optimization)\n  - Unbounded array growth patterns\n  - Inefficient regex compilation in loops',
  sections: {
    'ISSUE TYPES': '  🔥 HIGH:      Major bottlenecks with significant performance impact\n  ⚡ MEDIUM:    Moderate optimization opportunities\n  💡 LOW:       Minor performance improvements',
    'CATEGORIES': '  🧮 Algorithm:    Computational complexity issues\n  💾 I/O:          Input/output bottlenecks\n  🔧 CPU:          CPU-intensive operations\n  🧠 Memory:       Memory usage optimization\n  ⚡ Concurrency:  Parallelization opportunities',
    'EFFORT LEVELS': '  1: Quick wins (easy fixes)\n  2: Moderate effort required\n  3: Complex refactoring needed'
  }
});

// Removed duplicate formatResults - now using shared version from commonFormatters

// Create custom summary formatter using shared utility
const formatSummary = createSummaryFormatter({
  title: '🚀 Performance Analysis Results',
  scoreField: 'performanceScore',
  gradeField: 'performanceGrade',
  filesField: 'filesAnalyzed',
  issuesField: 'totalIssues',
  showEffort: true,
  effortField: 'totalEffort',
  customMetrics: [
    { field: 'filesWithIssues', icon: '⚠️', label: 'Files with Issues' }
  ],
  breakdowns: [
    {
      field: 'severityBreakdown',
      type: 'severity',
      icon: '📈',
      title: 'Issue Breakdown'
    },
    {
      field: 'categoryBreakdown',
      type: 'category',
      icon: '🏷️',
      title: 'Category Breakdown',
      icons: {
        'Algorithm': '🧮',
        'I/O': '💾',
        'CPU': '🔧',
        'Memory': '🧠',
        'Concurrency': '⚡'
      }
    }
  ],
  customSections: [
    createRecommendationsSection(),
    createTopIssuesSection({
      field: 'topIssues',
      title: 'Top Performance Issues',
      limit: 20,
      formatItem: (issue, i) => {
        const severityIcon = issue.severity === 'HIGH' ? '🔥' : 
                           issue.severity === 'MEDIUM' ? '⚡' : '💡';
        const categoryIcon = issue.category === 'Algorithm' ? '🧮' :
                           issue.category === 'I/O' ? '💾' :
                           issue.category === 'CPU' ? '🔧' :
                           issue.category === 'Memory' ? '🧠' : '⚡';
        return `   ${i + 1}. ${severityIcon} ${categoryIcon} ${issue.type}\n      📍 ${issue.summary}\n      💡 ${issue.recommendation}\n      ⏱️  Effort: ${issue.effort}/3 | 🎯 Impact: ${issue.impact}`;
      }
    })
  ]
});

// Old formatSummary implementation fully removed - using shared formatter

// Old formatDetailed removed - using shared detailed formatter

// Replace with shared detailed formatter
const formatDetailedNew = createDetailedFormatter({
  title: '🔍 Detailed Performance Analysis',
  formatSummary: formatSummary,
  filesField: 'files',
  issuesField: 'issues',
  formatFile: (fileData) => {
    return `📄 ${path.relative('.', fileData.file)} (Score: ${fileData.performanceScore}/100, Effort: ${fileData.metrics.totalEffort})\n`;
  },
  formatIssue: (issue) => {
    const icons = {
      severity: { 'HIGH': '🔥', 'MEDIUM': '⚡', 'LOW': '💡' },
      category: { 'Algorithm': '🧮', 'I/O': '💾', 'CPU': '🔧', 'Memory': '🧠', 'Concurrency': '⚡' }
    };
    
    const lines = formatIssueWithIcons(issue, icons);
    
    // Add code snippet if available
    if (issue.code) {
      lines.splice(1, 0, `      📋 Code: ${issue.code}`);
    }
    
    return lines;
  }
});

/**
 * Main function
 */
async function main() {
  const { getProcessArgs } = require('../lib/utils/processHelpers');
  const args = getProcessArgs();
  const { shouldShowHelp } = require('../lib/utils/cliHelpers');
  
  if (shouldShowHelp(args)) {
    showHelp();
    return;
  }
  
  // Parse arguments using shared parser
  const { options: parsedOptions, targetPath: parsedPath, error } = sharedParseArgs(args, {
    defaults: {
      extensions: ['.js', '.ts', '.jsx', '.tsx'],
      outputFormat: 'summary',
      severity: 'LOW',
      category: null,
      effort: null
    },
    flags: {
      extensions: { type: 'list' },
      outputFormat: { type: 'string' },
      severity: { type: 'string', transform: (v) => v.toUpperCase() },
      category: { type: 'string' },
      effort: { type: 'string' }
    }
  });
  
  if (error) {
    const { logAnalysisError } = require('../lib/utils/errorMessages');
    logAnalysisError('performance', error);
    process.exit(1);
  }
  
  const { extensions, outputFormat, severity, category, effort } = parsedOptions;
  const targetPath = parsedPath;
  
  try {
    // Check if target is a file or directory
    const stat = await fs.promises.stat(targetPath);
    let results;
    
    if (stat.isFile()) {
      // Analyze single file
      results = await analyzeFilePerformance(targetPath);
    } else {
      // Analyze project
      results = await analyzeProjectPerformance(targetPath, {
        extensions,
        excludePatterns: ['node_modules', '.git', 'dist', 'build', 'coverage'],
        maxFiles: Infinity // Enable unlimited file processing
      });
    }
    
    // Output results
    const formatted = formatResults(results, outputFormat, { severity, category, effort }, formatSummary, formatDetailedNew);
    console.log(formatted);
    
    // Exit with error code if high-impact issues found
    exitOnSeverityThreshold(results);
    
  } catch (error) {
    handleAnalysisError(error, 'performance');
  }
}

if (require.main === module) {
  main().catch(error => { console.error("Fatal error:", error); process.exit(1); });
}