agentsqripts/lib/wet-code/improved-analyzer/metrics/calculateDuplicationImpact.js

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

/**
 * @file Calculate duplication impact score
 * @description Single responsibility: Calculate the impact of code duplication
 */

/**
 * Calculate duplication impact score
 */
function calculateDuplicationImpact(blocks) {
  const totalLines = blocks.reduce((sum, b) => sum + b.lineCount, 0);
  const totalComplexity = blocks.reduce((sum, b) => sum + b.complexity, 0);
  const filesAffected = new Set(blocks.map(b => b.file)).size;
  
  // Calculate potential savings
  const avgLines = totalLines / blocks.length;
  const potentialLinesSaved = (blocks.length - 1) * avgLines;
  
  // Impact score considers multiple factors
  const score = (
    potentialLinesSaved * 1.0 +        // Lines saved
    totalComplexity * 0.5 +            // Complexity
    filesAffected * 10 +               // Cross-file impact
    blocks.length * 5                  // Number of duplicates
  );
  
  return {
    score: Math.round(score),
    linesSaved: Math.round(potentialLinesSaved),
    filesAffected,
    occurrences: blocks.length,
    complexity: totalComplexity
  };
}

module.exports = calculateDuplicationImpact;