Create middleware/auth.js

middleware/auth.js

@@ -0,0 +1,9 @@
+module.exports = function (req, res, next) {
+  const token = req.headers["x-access-token"];
+
+  if (!token || token !== process.env.ACCESS_TKN) {
+    return res.status(401).json({ error: "Unauthorized" });
+  }
+
+  next();
+};