javascript - Is using compose to add routes and middleware to an Express app an anti-pattern? -

i working on small server used boilerplate future servers. since order can matter middleware, reached compose pipe them in obvious order. goal add 1 level of abstraction middleware , routes can swapped out later without many changes entry point.

given info, seem anti-pattern use compose since middleware/routes impure , modify (app) gets passed in?

'use strict';  import { createserver } 'http'; import express 'express'; import { flowright compose } 'lodash';  import { system, environment } './config'; import routes './routes';  const setup = compose(routes, system); const app = setup(express());  createserver(app)     .listen(environment.port, environment.ip, () => {         console.log('server running!');     });