Middleware when use ES6 with babel - Need opinion

[Mahendran Nayar]

Need your opinion. Me working on first Node/Express project.

I've a routes file with one module.exports called users.js

It contains only routes like 

app.route("/user")

        .get((req, res) => {

This imported into a main middleware file with ES6

import users from "../app/users";

and then invoked like users(app); This works fine.

Is this OK or is there any down side compare to require('../app/users')(app); or app.use()??