Add tool to find license

Author: sebromero

tools/find-license.mjs

@@ -0,0 +1,33 @@
+function convertToRawURL(url, suffix = null) {
+    url = url.replace('https://github.com/', '');
+    const parts = url.split('/');
+    const owner = parts[0];
+    const repoName = parts[1];
+    const branch = 'HEAD';
+    let path = parts[2] ? "/" + parts[2] : '';
+    if (suffix) {
+        path += "/" + suffix;
+    }
+    return `https://raw.githubusercontent.com/${owner}/${repoName}/${branch}${path}`;
+}
+
+async function findLicenseURL(url) {
+    const licenseFileURL = convertToRawURL(url, 'LICENSE');
+    // Fetch the license file
+    const licenseResponse = await fetch(licenseFileURL);
+    if (licenseResponse.ok) {
+        const licenseText = await licenseResponse.text();
+        // Get the first line of the license file
+        const license = licenseText.split('\n')[0];
+        return license;
+    }
+    return null;
+}
+
+if(process.argv.length < 3) {
+    console.error('Usage: node find-license.mjs <GitHub URL>');
+    process.exit(1);
+}
+
+const license = await findLicenseURL(process.argv[2]);
+if (license) console.log(license);