I created an app in nodejs and koa2

app.js

'use strict';
const Koa = require('koa');
const app = new Koa();
const port = 3000;
const router = require('./router');
const path = require("path")
const views = require("koa-views");
const bodyParser = require("koa-bodyparser");
const koastatic = require("koa-static");
app.use(koastatic(path.join( __dirname,  "./static")))
app.use(views(path.join(__dirname, "./view"), {extension: "ejs"}))
router(app);
app.listen(port, () => {
    console.log(`Server is running at http://localhost:${port}`);
});

There are some router files in folder router, e.g.

index.js

'use strict';
const fs = require('fs');
module.exports = (app) => {
  fs.readdirSync(__dirname).forEach(file => {
    if (file === 'index.js') { return; }
    const route = require(`./${file}`);
    app.use(route.routes()).use(route.allowedMethods());
  });
}

There are some pages that require login to access, e.g.

dashboard.js

'use strict';
const Router = require("koa-router");
const router = new Router({prefix: '/dashboard'});
router
    .get('/', async (ctx, next) => {
        let login = ctx.cookies.get('login') || "";
        if (!login) {
            ctx.redirect('/login');
        } else {
            let isexist = //check login status
            if (isexist && login) {
                await ctx.render("dashboard", {
                    current_service: "dashboard"
                });
            } else {
                ctx.redirect('/login');
            }
        }
    })
module.exports = router;

It works well, but there are lots of pages, if I use this way to determine these pages that require a login to access, it seems unreasonable, is there a better solution? Thank you.