fix: reduce extractMetadata cyclomatic complexity, pin deps to exact versions

Author: iknox

package.json

@@ -49,19 +49,19 @@
     },
     "dependencies": {
         "@modelcontextprotocol/sdk": "1.29.0",
-        "@mozilla/readability": "^0.6.0",
+        "@mozilla/readability": "0.6.0",
         "@types/cors": "^2.8.19",
         "@types/express": "^5.0.6",
         "cors": "^2.8.6",
         "express": "^5.2.1",
         "express-rate-limit": "^8.5.2",
-        "linkedom": "^0.18.13",
+        "linkedom": "0.18.13",
         "node-html-markdown": "^2.0.0",
         "node-html-parser": "^6.1.13",
         "undici": "7.28.0"
     },
     "devDependencies": {
-        "@types/mozilla__readability": "^0.4.2",
+        "@types/mozilla__readability": "0.4.2",
         "@types/node": "22.20.1",
         "@types/supertest": "^7.2.0",
         "@typescript-eslint/eslint-plugin": "8.63.0",

src/url-reader.ts

@@ -199,33 +199,30 @@ function getMeta(doc: Document, name: string): string | undefined {
   return el?.getAttribute("content")?.trim() || undefined;
 }
 
+function firstMeta(doc: Document, names: string[]): string | undefined {
+  for (const name of names) {
+    const value = getMeta(doc, name);
+    if (value) return value;
+  }
+  return undefined;
+}
+
 export function extractMetadata(html: string, url: string): PageMetadata {
   const { document } = parseHTML(html);
   const result: PageMetadata = {};
 
-  const title = getMeta(document, "og:title")
-    || getMeta(document, "twitter:title")
+  const title = firstMeta(document, ["og:title", "twitter:title"])
     || document.querySelector("title")?.textContent?.trim()
     || undefined;
   if (title) result.title = title;
 
-  const author = getMeta(document, "author")
-    || getMeta(document, "article:author")
-    || getMeta(document, "og:article:author")
-    || undefined;
+  const author = firstMeta(document, ["author", "article:author", "og:article:author"]);
   if (author) result.author = author;
 
-  const publishedDate = getMeta(document, "article:published_time")
-    || getMeta(document, "og:article:published_time")
-    || getMeta(document, "date")
-    || getMeta(document, "pubdate")
-    || undefined;
+  const publishedDate = firstMeta(document, ["article:published_time", "og:article:published_time", "date", "pubdate"]);
   if (publishedDate) result.publishedDate = publishedDate;
 
-  const description = getMeta(document, "description")
-    || getMeta(document, "og:description")
-    || getMeta(document, "twitter:description")
-    || undefined;
+  const description = firstMeta(document, ["description", "og:description", "twitter:description"]);
   if (description) result.description = description;
 
   const siteName = getMeta(document, "og:site_name") || undefined;