/** @jsxImportSource npm:hono@3/jsx */ import { extractValInfo } from "https://esm.town/v/pomdtr/extractValInfo?v=29"; import { Hono } from "npm:hono"; import { marked } from "npm:marked"; interface PackageJson { dependencies?: Record; devDependencies?: Record; } interface PackageLicense { name: string; version: string; license: string; repoUrl: string; } // Function to fetch package info from NPM registry async function fetchPackageInfo(packageName: string) { const url = `https://registry.npmjs.org/${packageName}`; const response = await fetch(url); if (!response.ok) { throw new Error(`Failed to fetch package info for ${packageName}`); } return response.json(); } // Function to extract license information from package info function extractLicenseInfo(packageInfo: any): string { if (typeof packageInfo.license === "string") { return packageInfo.license; } else if (packageInfo.license && packageInfo.license.type) { return packageInfo.license.type; } else { return "Unknown"; } } // Function to extract and normalize GitHub repo URL from package info function extractGitHubRepoUrl(packageInfo: any): string { const repository = packageInfo.repository; if (repository) { let repoUrl = typeof repository === "string" ? repository : repository.url; if (repoUrl) { // Remove git+ prefix and .git suffix repoUrl = repoUrl.replace(/^git\+/, "").replace(/\.git$/, ""); // Convert git:// URLs to https:// repoUrl = repoUrl.replace(/^git:\/\/github.com\//, "https://github.com/"); // Convert ssh URLs to https:// repoUrl = repoUrl.replace(/^git@github.com:/, "https://github.com/"); // Ensure the URL starts with https:// if (!repoUrl.startsWith("http")) { repoUrl = `https://github.com/${repoUrl}`; } return repoUrl; } } return ""; } function extractRepoNameFromUrl(url: string): string { const match = url.match(/githubusercontent\.com\/[^\/]+\/([^\/]+)/); return match ? match[1] : ""; } async function checkPackageLicenses(packageJsonUrl: string): Promise<{ licenses: PackageLicense[]; repoName: string }> { try { const response = await fetch(packageJsonUrl); if (!response.ok) { throw new Error(`Failed to fetch package.json from ${packageJsonUrl}`); } const packageJson: PackageJson = await response.json(); const dependencies = { ...packageJson.dependencies, ...packageJson.devDependencies }; const licenseInfo: PackageLicense[] = []; const repoName = extractRepoNameFromUrl(packageJsonUrl); for (const [name, version] of Object.entries(dependencies)) { try { const packageInfo = await fetchPackageInfo(name); const license = extractLicenseInfo(packageInfo); const repoUrl = extractGitHubRepoUrl(packageInfo); licenseInfo.push({ name, version, license, repoUrl }); } catch (error) { licenseInfo.push({ name, version, license: `Error: ${error.message}`, repoUrl: "" }); } } return { licenses: licenseInfo, repoName }; } catch (error) { throw new Error(`Error checking package licenses: ${error.message}`); } } function generateLicenseTable(licenses: PackageLicense[]): string { let table = "| Package | Version | License |\n|---------|---------|--------|\n"; licenses.forEach(({ name, version, license, repoUrl }) => { const packageLink = repoUrl ? `${name}` : name; table += `| ${packageLink} | ${version} | ${license} |\n`; }); return table; } const app = new Hono(); app.get("/", async (c) => { const url = c.req.query("url"); if (url) { try { const { licenses, repoName } = await checkPackageLicenses(url); const markdownContent = ` \n## Results: \n${generateLicenseTable(licenses)} `; const htmlContent = marked(markdownContent, { mangle: false, headerIds: false }); return c.html(

Dependency License Checker

Raw GitHub package.json URL: {" "}

Built on Val Town

{repoName}

, ); } catch (error) { return c.html(

Error

{error.message}

Make sure you are using the{" "} raw JSON GitHub URL.

Try again

, ); } } else { return c.html(

Dependency License Checker

Raw GitHub package.json URL:

Built on Val Town

, ); } }); export default app.fetch;

dependencyLicenses