dependency-guardian/src/utils/impact-analyzer.js

A powerful dependency management and analysis tool for Node.js projects

const path = require('path');
const fs = require('fs').promises;
const logger = require('./logger');
const bundleAnalyzer = require('../core/analyzers/bundle-analyzer');

class ImpactAnalyzer {
  async analyzeImpact(packageName, version) {
    try {
      const impacts = {
        size: await this.analyzeSizeImpact(packageName, version),
        dependencies: await this.analyzeDependencyImpact(packageName),
        breaking: await this.analyzeBreakingChanges(packageName, version),
        security: await this.analyzeSecurityImpact(packageName, version)
      };

      return {
        ...impacts,
        score: this.calculateImpactScore(impacts)
      };
    } catch (error) {
      logger.error(`Failed to analyze impact for ${packageName}:`, error);
      throw error;
    }
  }

  async analyzeSizeImpact(packageName, version) {
    const bundleStats = await bundleAnalyzer.analyzeBundleSize({
      [packageName]: version
    });

    return {
      size: bundleStats.size,
      gzip: bundleStats.gzip,
      percentage: this.calculatePercentage(bundleStats.size)
    };
  }

  async analyzeDependencyImpact(packageName) {
    // Implementation for analyzing dependency tree impact
    // This would check for potential conflicts, duplicates, etc.
  }

  async analyzeBreakingChanges(packageName, version) {
    // Implementation for detecting breaking changes
    // This would compare API signatures, check changelogs, etc.
  }

  async analyzeSecurityImpact(packageName, version) {
    // Implementation for security impact analysis
    // This would check for known vulnerabilities, audit results, etc.
  }

  calculateImpactScore(impacts) {
    // Calculate a normalized impact score (0-100)
    // based on various impact metrics
  }

  calculatePercentage(size) {
    // Calculate size impact percentage
    // based on current project size
  }
}

module.exports = new ImpactAnalyzer();