agentsqripts/lib/performance/largeInlineObjectDetector.js

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

/**
 * @file Large inline object detector
 * @description Detects large inline objects and strings
 */

// Precompiled regex pattern for performance optimization
const LARGE_OBJECT_PATTERN = /{[\s\S]{500,}}/;

/**
 * Detects large inline objects and strings
 * @param {string} content - File content
 * @param {string} filePath - Path to the file
 * @returns {Array} Array of large inline object issues
 */
function detectLargeInlineObjects(content, filePath) {
  const issues = [];
  const lines = content.split('\n');
  const { PERFORMANCE_PATTERNS } = require('./performancePatterns');
  
  lines.forEach((line, index) => {
    const lineNumber = index + 1;
    
    // Check for very long lines (potential large inline objects)
    if (line.length > 1000) {
      const pattern = PERFORMANCE_PATTERNS['large_inline'];
      issues.push({
        type: 'large_inline',
        severity: pattern.severity,
        category: pattern.category,
        location: `${filePath}:${lineNumber}`,
        line: lineNumber,
        size: line.length,
        code: line.substring(0, 100) + (line.length > 100 ? '...' : ''),
        description: `Inlined string/object > ${Math.round(line.length/1000)}kB — may hurt memory/gc`,
        summary: `Inlined string/object > ${Math.round(line.length/1000)}kB — may hurt memory/gc`,
        recommendation: 'Move to static asset, external file, or cache layer',
        effort: pattern.effort,
        impact: pattern.impact,
        estimatedSavings: 'up to 90% memory savings'
      });
    }
    
    // Check for large object literals using precompiled pattern
    if (LARGE_OBJECT_PATTERN.test(line)) {
      const pattern = PERFORMANCE_PATTERNS['large_inline'];
      issues.push({
        type: 'large_inline',
        severity: pattern.severity,
        category: pattern.category,
        location: `${filePath}:${lineNumber}`,
        line: lineNumber,
        size: line.length,
        code: line.substring(0, 100) + '...',
        description: 'Large object literal detected — may impact memory usage',
        summary: 'Large object literal detected — may impact memory usage',
        recommendation: 'Consider moving to external configuration or lazy loading',
        effort: pattern.effort,
        impact: pattern.impact,
        estimatedSavings: 'memory optimization'
      });
    }
  });
  
  return issues;
}

module.exports = {
  detectLargeInlineObjects
};