refactor: optional lang and title for engines response

src/handlers/google.ts

@@ -76,8 +76,6 @@ export default async function google(
   return {
     content: `${searchForm}${content.join("")}${navigation}`,
     textContent: textContent.join("\n"),
-    title: window.document.title,
-    lang: window.document.documentElement.lang,
   };
 }
 

src/handlers/handler.interface.ts

@@ -1,8 +1,8 @@
 export interface IHandlerOutput {
   content: string;
   textContent: string;
-  title: string;
-  lang: string;
+  title?: string;
+  lang?: string;
 }
 
 export const handlerSchema = {

src/handlers/main.ts

@@ -53,9 +53,12 @@ export default async function handlePage(
     return engines[engine](window);
   }
 
-  for (let match of fallback) {
+  const title = window.document.title;
+  const lang = window.document.documentElement.lang;
+
+  for (const match of fallback) {
     if (micromatch.isMatch(urlObj.hostname, match.pattern)) {
-      return match.engine(window);
+      return { title, lang, ...match.engine(window) };
     }
   }