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This rule automatically analyzes dependencies before they're installed to provide insights about maintenance frequency, security vulnerabilities, and popularity in the developer ecosystem.
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| name | dependency-analysis |
| description | This rule automatically analyzes dependencies before they're installed to provide insights about maintenance frequency, security vulnerabilities, and popularity in the developer ecosystem. |
filters:
matches: | // Match package.json modifications and lock file changes package.json package-lock.json yarn.lock pnpm-lock.yaml
transforms: |
// Analyze dependencies when package files are modified
{{
const analyzeDependency = async (packageName, version) => {
try {
// Fetch package information from npm registry
const npmResponse = await fetch(https://registry.npmjs.org/${packageName});
const npmData = await npmResponse.json();
// Fetch GitHub data if repository is available
let githubData = null;
if (npmData.repository && npmData.repository.url) {
const repoUrl = npmData.repository.url.replace('git+', '').replace('.git', '');
const repoPath = repoUrl.split('github.com/')[1];
if (repoPath) {
const githubResponse = await fetch(`https://api.github.com/repos/${repoPath}`);
githubData = await githubResponse.json();
}
}
// Check for security vulnerabilities
const auditResponse = await fetch(`https://registry.npmjs.org/-/npm/v1/security/advisories/${packageName}`);
const auditData = await auditResponse.json();
// Calculate maintenance score
const lastRelease = new Date(npmData.time[npmData['dist-tags'].latest]);
const daysSinceRelease = Math.floor((Date.now() - lastRelease.getTime()) / (1000 * 60 * 60 * 24));
let maintenanceScore = 100;
if (daysSinceRelease > 365) maintenanceScore -= 40;
else if (daysSinceRelease > 180) maintenanceScore -= 20;
else if (daysSinceRelease > 90) maintenanceScore -= 10;
// Calculate popularity score
const weeklyDownloads = npmData.downloads?.weekly || 0;
let popularityScore = 100;
if (weeklyDownloads < 1000) popularityScore -= 50;
else if (weeklyDownloads < 10000) popularityScore -= 20;
else if (weeklyDownloads > 100000) popularityScore += 20;
// Calculate security score
const vulnerabilities = auditData.vulnerabilities || [];
let securityScore = 100 - (vulnerabilities.length * 20);
return {
packageName,
version,
maintenanceScore,
popularityScore,
securityScore,
lastRelease: daysSinceRelease,
weeklyDownloads,
vulnerabilities: vulnerabilities.length,
githubStars: githubData?.stargazers_count || 0,
recommendations: generateRecommendations(maintenanceScore, popularityScore, securityScore, vulnerabilities)
};
} catch (error) {
console.error(`Error analyzing ${packageName}:`, error);
return null;
}
};
const generateRecommendations = (maintenance, popularity, security, vulnerabilities) => {
const recommendations = [];
if (maintenance < 60) {
recommendations.push("⚠️ Low maintenance activity - consider alternatives");
}
if (popularity < 50) {
recommendations.push("📉 Low popularity - may have limited community support");
}
if (security < 80) {
recommendations.push("🔒 Security vulnerabilities detected - update or replace");
}
if (vulnerabilities.length > 0) {
recommendations.push(`🚨 ${vulnerabilities.length} security vulnerability(ies) found`);
}
return recommendations;
};
// Analyze all dependencies in package.json
const packageJson = JSON.parse(content);
const allDeps = {
...packageJson.dependencies,
...packageJson.devDependencies,
...packageJson.peerDependencies
};
const analysisResults = [];
for (const [name, version] of Object.entries(allDeps)) {
const result = await analyzeDependency(name, version);
if (result) {
analysisResults.push(result);
}
}
return {
analysis: analysisResults,
summary: generateSummary(analysisResults)
};
}}
examples:
input: | { "dependencies": { "lodash": "^4.17.21", "express": "^4.18.2" } } output: |
input: | { "dependencies": { "deprecated-package": "^1.0.0" } } output: |
tests:
input: "npm install express" output: "Analyzing express... ✅ Express is well-maintained with 1.8M weekly downloads. No security issues detected."
input: "yarn add vulnerable-package" output: "🚨 WARNING: vulnerable-package has 3 security vulnerabilities! Consider alternatives or update immediately."
input: "pnpm add abandoned-lib" output: "⚠️ CAUTION: abandoned-lib hasn't been updated in 2 years. Low community support. Consider alternatives."
metadata: priority: high version: 1.0
npm install some-package
Analysis Output:
🔍 Analyzing some-package...
📊 Package Analysis Results:
✅ Maintenance: Excellent (Last release: 15 days ago)
✅ Popularity: High (500k weekly downloads)
✅ Security: Clean (No vulnerabilities)
⭐ GitHub: 2.3k stars
💡 Recommendation: Great choice! This package is well-maintained and secure.
npm install old-vulnerable-package
Analysis Output:
🚨 WARNING: old-vulnerable-package Analysis
❌ Maintenance: Poor (Last release: 400 days ago)
❌ Popularity: Low (100 weekly downloads)
❌ Security: Critical (5 vulnerabilities detected)
⭐ GitHub: 50 stars
⚠️ Recommendations:
- Package is poorly maintained and has security issues
- Consider alternatives: modern-alternative, secure-package
- If you must use this package, update to latest version
- Monitor for security patches
# Analyze all current dependencies
npm audit
Enhanced Output:
🔍 Dependency Health Check
📦 Total Dependencies: 45
✅ Well-maintained: 38 packages
⚠️ Needs attention: 5 packages
🚨 Critical issues: 2 packages
📊 Summary:
- Average maintenance score: 85/100
- Average popularity score: 78/100
- Security vulnerabilities: 3 found
💡 Action Items:
1. Update lodash to fix security vulnerability
2. Replace deprecated-package with modern-alternative
3. Monitor old-package for updates
npm install and npm auditnpm outdated for update recommendationsyarn add and yarn auditpnpm add and pnpm auditbun add and bun audit