Stirling-PDF/frontend/scripts/generate-licenses.js

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#!/usr/bin/env node
const { execSync } = require('child_process');
const fs = require('fs');
const path = require('path');
/**
* Generate 3rd party licenses for frontend dependencies
* This script creates a JSON file similar to the Java backend's 3rdPartyLicenses.json
*/
const OUTPUT_FILE = path.join(__dirname, '..', 'src', 'assets', '3rdPartyLicenses.json');
const PACKAGE_JSON = path.join(__dirname, '..', 'package.json');
// Ensure the output directory exists
const outputDir = path.dirname(OUTPUT_FILE);
if (!fs.existsSync(outputDir)) {
fs.mkdirSync(outputDir, { recursive: true });
}
console.log('🔍 Generating frontend license report...');
try {
// Install license-checker if not present
try {
require.resolve('license-checker');
} catch (e) {
console.log('📦 Installing license-checker...');
execSync('npm install --save-dev license-checker', { stdio: 'inherit' });
}
// Generate license report using license-checker (more reliable)
const licenseReport = execSync('npx license-checker --production --json', {
encoding: 'utf8',
cwd: path.dirname(PACKAGE_JSON)
});
let licenseData;
try {
licenseData = JSON.parse(licenseReport);
} catch (parseError) {
console.error('❌ Failed to parse license data:', parseError.message);
console.error('Raw output:', licenseReport.substring(0, 500) + '...');
process.exit(1);
}
if (!licenseData || typeof licenseData !== 'object') {
console.error('❌ Invalid license data structure');
process.exit(1);
}
// Convert license-checker format to array
const licenseArray = Object.entries(licenseData).map(([key, value]) => {
let name, version;
// Handle scoped packages like @mantine/core@1.0.0
if (key.startsWith('@')) {
const parts = key.split('@');
name = `@${parts[1]}`;
version = parts[2];
} else {
// Handle regular packages like react@18.0.0
const lastAtIndex = key.lastIndexOf('@');
name = key.substring(0, lastAtIndex);
version = key.substring(lastAtIndex + 1);
}
// Normalize license types for edge cases
let licenseType = value.licenses;
// Handle missing or null licenses
if (!licenseType || licenseType === null || licenseType === undefined) {
licenseType = 'Unknown';
}
// Handle empty string licenses
if (licenseType === '') {
licenseType = 'Unknown';
}
// Handle array licenses (rare but possible)
if (Array.isArray(licenseType)) {
licenseType = licenseType.join(' AND ');
}
// Handle object licenses (fallback)
if (typeof licenseType === 'object' && licenseType !== null) {
licenseType = 'Unknown';
}
return {
name: name,
version: version || value.version || 'unknown',
licenseType: licenseType,
repository: value.repository,
url: value.url,
link: value.licenseUrl
};
});
// Transform to match Java backend format
const transformedData = {
dependencies: licenseArray.map(dep => {
const licenseType = Array.isArray(dep.licenseType) ? dep.licenseType.join(', ') : (dep.licenseType || 'Unknown');
const licenseUrl = dep.link || getLicenseUrl(licenseType);
return {
moduleName: dep.name,
moduleUrl: dep.repository || dep.url || `https://www.npmjs.com/package/${dep.name}`,
moduleVersion: dep.version,
moduleLicense: licenseType,
moduleLicenseUrl: licenseUrl
};
})
};
// Log summary of license types found
const licenseSummary = licenseArray.reduce((acc, dep) => {
const license = Array.isArray(dep.licenseType) ? dep.licenseType.join(', ') : (dep.licenseType || 'Unknown');
acc[license] = (acc[license] || 0) + 1;
return acc;
}, {});
console.log('📊 License types found:');
Object.entries(licenseSummary).forEach(([license, count]) => {
console.log(` ${license}: ${count} packages`);
});
// Log any complex or unusual license formats for debugging
const complexLicenses = licenseArray.filter(dep =>
dep.licenseType && (
dep.licenseType.includes('AND') ||
dep.licenseType.includes('OR') ||
dep.licenseType === 'Unknown' ||
dep.licenseType.includes('SEE LICENSE')
)
);
if (complexLicenses.length > 0) {
console.log('\n🔍 Complex/Edge case licenses detected:');
complexLicenses.forEach(dep => {
console.log(` ${dep.name}@${dep.version}: "${dep.licenseType}"`);
});
}
// Check for potentially problematic licenses
const problematicLicenses = checkLicenseCompatibility(licenseSummary, licenseArray);
if (problematicLicenses.length > 0) {
console.log('\n⚠ License compatibility warnings:');
problematicLicenses.forEach(warning => {
console.log(` ${warning.message}`);
});
// Write license warnings to a separate file for CI/CD
const warningsFile = path.join(__dirname, '..', 'src', 'assets', 'license-warnings.json');
fs.writeFileSync(warningsFile, JSON.stringify({
warnings: problematicLicenses,
generated: new Date().toISOString()
}, null, 2));
console.log(`⚠️ License warnings saved to: ${warningsFile}`);
} else {
console.log('\n✅ All licenses appear to be corporate-friendly');
}
// Write to file
fs.writeFileSync(OUTPUT_FILE, JSON.stringify(transformedData, null, 4));
console.log(`✅ License report generated successfully!`);
console.log(`📄 Found ${transformedData.dependencies.length} dependencies`);
console.log(`💾 Saved to: ${OUTPUT_FILE}`);
} catch (error) {
console.error('❌ Error generating license report:', error.message);
process.exit(1);
}
/**
* Get standard license URLs for common licenses
*/
function getLicenseUrl(licenseType) {
if (!licenseType || licenseType === 'Unknown') return '';
const licenseUrls = {
'MIT': 'https://opensource.org/licenses/MIT',
'Apache-2.0': 'https://www.apache.org/licenses/LICENSE-2.0',
'Apache License 2.0': 'https://www.apache.org/licenses/LICENSE-2.0',
'BSD-3-Clause': 'https://opensource.org/licenses/BSD-3-Clause',
'BSD-2-Clause': 'https://opensource.org/licenses/BSD-2-Clause',
'BSD': 'https://opensource.org/licenses/BSD-3-Clause',
'GPL-3.0': 'https://www.gnu.org/licenses/gpl-3.0.html',
'GPL-2.0': 'https://www.gnu.org/licenses/gpl-2.0.html',
'LGPL-2.1': 'https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html',
'LGPL-3.0': 'https://www.gnu.org/licenses/lgpl-3.0.html',
'ISC': 'https://opensource.org/licenses/ISC',
'CC0-1.0': 'https://creativecommons.org/publicdomain/zero/1.0/',
'Unlicense': 'https://unlicense.org/',
'MPL-2.0': 'https://www.mozilla.org/en-US/MPL/2.0/',
'WTFPL': 'http://www.wtfpl.net/',
'Zlib': 'https://opensource.org/licenses/Zlib',
'Artistic-2.0': 'https://opensource.org/licenses/Artistic-2.0',
'EPL-1.0': 'https://www.eclipse.org/legal/epl-v10.html',
'EPL-2.0': 'https://www.eclipse.org/legal/epl-2.0/',
'CDDL-1.0': 'https://opensource.org/licenses/CDDL-1.0',
'Ruby': 'https://www.ruby-lang.org/en/about/license.txt',
'Python-2.0': 'https://www.python.org/download/releases/2.0/license/',
'Public Domain': 'https://creativecommons.org/publicdomain/zero/1.0/',
'UNLICENSED': ''
};
// Try exact match first
if (licenseUrls[licenseType]) {
return licenseUrls[licenseType];
}
// Try case-insensitive match
const lowerType = licenseType.toLowerCase();
for (const [key, url] of Object.entries(licenseUrls)) {
if (key.toLowerCase() === lowerType) {
return url;
}
}
// Handle complex SPDX expressions like "(MIT AND Zlib)" or "(MIT OR CC0-1.0)"
if (licenseType.includes('AND') || licenseType.includes('OR')) {
// Extract the first license from compound expressions for URL
const match = licenseType.match(/\(?\s*([A-Za-z0-9\-\.]+)/);
if (match && licenseUrls[match[1]]) {
return licenseUrls[match[1]];
}
}
// For non-standard licenses, return empty string (will use package link if available)
return '';
}
/**
* Check for potentially problematic licenses that may not be MIT/corporate compatible
*/
function checkLicenseCompatibility(licenseSummary, licenseArray) {
const warnings = [];
// Define problematic license patterns
const problematicLicenses = {
// Copyleft licenses
'GPL-2.0': 'Strong copyleft license - requires derivative works to be GPL',
'GPL-3.0': 'Strong copyleft license - requires derivative works to be GPL',
'LGPL-2.1': 'Weak copyleft license - may require source disclosure for modifications',
'LGPL-3.0': 'Weak copyleft license - may require source disclosure for modifications',
'AGPL-3.0': 'Network copyleft license - requires source disclosure for network use',
'AGPL-1.0': 'Network copyleft license - requires source disclosure for network use',
// Other potentially problematic licenses
'WTFPL': 'Potentially problematic license - legal uncertainty',
'CC-BY-SA-4.0': 'ShareAlike license - requires derivative works to use same license',
'CC-BY-SA-3.0': 'ShareAlike license - requires derivative works to use same license',
'CC-BY-NC-4.0': 'Non-commercial license - prohibits commercial use',
'CC-BY-NC-3.0': 'Non-commercial license - prohibits commercial use',
'OSL-3.0': 'Copyleft license - requires derivative works to be OSL',
'EPL-1.0': 'Weak copyleft license - may require source disclosure',
'EPL-2.0': 'Weak copyleft license - may require source disclosure',
'CDDL-1.0': 'Weak copyleft license - may require source disclosure',
'CDDL-1.1': 'Weak copyleft license - may require source disclosure',
'CPL-1.0': 'Weak copyleft license - may require source disclosure',
'MPL-1.1': 'Weak copyleft license - may require source disclosure',
'EUPL-1.1': 'Copyleft license - requires derivative works to be EUPL',
'EUPL-1.2': 'Copyleft license - requires derivative works to be EUPL',
'UNLICENSED': 'No license specified - usage rights unclear',
'Unknown': 'License not detected - manual review required'
};
// Known good licenses (no warnings needed)
const goodLicenses = new Set([
'MIT', 'Apache-2.0', 'Apache License 2.0', 'BSD-2-Clause', 'BSD-3-Clause', 'BSD',
'ISC', 'CC0-1.0', 'Public Domain', 'Unlicense', '0BSD', 'BlueOak-1.0.0',
'Zlib', 'Artistic-2.0', 'Python-2.0', 'Ruby', 'MPL-2.0', 'CC-BY-4.0',
'SEE LICENSE IN https://raw.githubusercontent.com/Stirling-Tools/Stirling-PDF/refs/heads/main/proprietary/LICENSE'
]);
// Helper function to normalize license names for comparison
function normalizeLicense(license) {
return license
.replace(/-or-later$/, '') // Remove -or-later suffix
.replace(/\+$/, '') // Remove + suffix
.trim();
}
// Check each license type
Object.entries(licenseSummary).forEach(([license, count]) => {
// Skip known good licenses
if (goodLicenses.has(license)) {
return;
}
// Check if this license only affects our own packages
const affectedPackages = licenseArray.filter(dep => {
const depLicense = Array.isArray(dep.licenseType) ? dep.licenseType.join(', ') : dep.licenseType;
return depLicense === license;
});
const isOnlyOurPackages = affectedPackages.every(dep =>
dep.name === 'frontend' ||
dep.name.toLowerCase().includes('stirling-pdf') ||
dep.name.toLowerCase().includes('stirling_pdf') ||
dep.name.toLowerCase().includes('stirlingpdf')
);
if (isOnlyOurPackages && (license === 'UNLICENSED' || license.startsWith('SEE LICENSE IN'))) {
return; // Skip warnings for our own Stirling-PDF packages
}
// Check for compound licenses like "(MIT AND Zlib)" or "(MIT OR CC0-1.0)"
if (license.includes('AND') || license.includes('OR')) {
// For OR licenses, check if there's at least one acceptable license option
if (license.includes('OR')) {
// Extract license components from OR expression
const orComponents = license
.replace(/[()]/g, '') // Remove parentheses
.split(' OR ')
.map(component => component.trim());
// Check if any component is in the goodLicenses set (with normalization)
const hasGoodLicense = orComponents.some(component => {
const normalized = normalizeLicense(component);
return goodLicenses.has(component) || goodLicenses.has(normalized);
});
if (hasGoodLicense) {
return; // Skip warning - can use the good license option
}
}
// For AND licenses or OR licenses with no good options, check for problematic components
const hasProblematicComponent = Object.keys(problematicLicenses).some(problematic =>
license.includes(problematic)
);
if (hasProblematicComponent) {
const affectedPackages = licenseArray
.filter(dep => {
const depLicense = Array.isArray(dep.licenseType) ? dep.licenseType.join(', ') : dep.licenseType;
return depLicense === license;
})
.map(dep => ({
name: dep.name,
version: dep.version,
url: dep.repository || dep.url || `https://www.npmjs.com/package/${dep.name}`
}));
const licenseType = license.includes('AND') ? 'AND' : 'OR';
const reason = licenseType === 'AND'
? 'Compound license with AND requirement - all components must be compatible'
: 'Compound license with potentially problematic components and no good fallback options';
warnings.push({
message: `📋 This PR contains ${count} package${count > 1 ? 's' : ''} with compound license "${license}" - manual review recommended`,
licenseType: license,
licenseUrl: '',
reason: reason,
packageCount: count,
affectedDependencies: affectedPackages
});
}
return;
}
// Check for exact matches with problematic licenses
if (problematicLicenses[license]) {
const affectedPackages = licenseArray
.filter(dep => {
const depLicense = Array.isArray(dep.licenseType) ? dep.licenseType.join(', ') : dep.licenseType;
return depLicense === license;
})
.map(dep => ({
name: dep.name,
version: dep.version,
url: dep.repository || dep.url || `https://www.npmjs.com/package/${dep.name}`
}));
const packageList = affectedPackages.map(pkg => pkg.name).slice(0, 5).join(', ') + (affectedPackages.length > 5 ? `, and ${affectedPackages.length - 5} more` : '');
const licenseUrl = getLicenseUrl(license) || 'https://opensource.org/licenses';
warnings.push({
message: `⚠️ This PR contains ${count} package${count > 1 ? 's' : ''} with license type [${license}](${licenseUrl}) - ${problematicLicenses[license]}. Affected packages: ${packageList}`,
licenseType: license,
licenseUrl: licenseUrl,
reason: problematicLicenses[license],
packageCount: count,
affectedDependencies: affectedPackages
});
} else {
// Unknown license type - flag for manual review
const affectedPackages = licenseArray
.filter(dep => {
const depLicense = Array.isArray(dep.licenseType) ? dep.licenseType.join(', ') : dep.licenseType;
return depLicense === license;
})
.map(dep => ({
name: dep.name,
version: dep.version,
url: dep.repository || dep.url || `https://www.npmjs.com/package/${dep.name}`
}));
warnings.push({
message: `❓ This PR contains ${count} package${count > 1 ? 's' : ''} with unknown license type "${license}" - manual review required`,
licenseType: license,
licenseUrl: '',
reason: 'Unknown license type',
packageCount: count,
affectedDependencies: affectedPackages
});
}
});
return warnings;
}