Improve offset handling in top lens requests

Author: ptrumpis

src/endpoints/explorer/top.js

@@ -9,6 +9,11 @@ const originalResponse = require('../../json/top.json');
 var router = express.Router();
 
 router.get('/', async function (req, res, next) {
+    const { country, limit, offset } = req.query;
+    if (offset >= originalResponse.lenses.length) {
+        return res.json({});
+    }
+
     return res.json(Util.modifyResponseURLs(originalResponse));
 });