How to optimize router in nodejs koa?

I use koa to create a nodejs application, and I try to optimize.

app.js

'use strict';
const Koa = require("koa");
const Router = require("koa-router");
const router = new Router();

const stuff = require("./router/stuff.js");
router.use("/stuff", stuff.routes());
//more routers like above
const home = require("./router/home.js");
router.use(home.routes());

app.use(router.routes(), router.allowedMethods());
app.listen(port);

There’re some router files in folder router, such as stuff.js, home.js, client.js

stuff.js

'use strict';
const router = require("koa-router")();
router
    .get("/", async (ctx) => {
        await ctx.render("stuff", {

        });
    })
module.exports = router;

home.js

'use strict';
const router = require("koa-router")();
router
    .get("/", async (ctx) => {
        await ctx.render("home", {

        });
    })
module.exports = router;

client.js

'use strict';
const router = require("koa-router")();
router
    .get("/", async (ctx) => {
        await ctx.render("client", {

        });
    })
module.exports = router;

I think the way I wrote is still very amateurish, how to optimize it? Thank you.