在 NodeJS 中使用快速路由方法时出错

Question

I'm trying to structure my NodeJS API in a different way, but I'm getting the following error when trying to import my routes:

/Users/pato/Documents/nodejs-bp-api/node_modules/express/lib/router/index.js:139 debug('dispatching %s %s', req.method, req.url); ^

TypeError: Cannot read property 'method' of undefined

express.js file

.
.
app.use(cors());
app.use(config.api.prefix, apiRoutes());

API routes/index.js

const todo = require('../api/routes/todo');
const express = require('express');   
const apiRoutes = () => {
   const app = express.Router();
   todo(app);
   return app();
};

    module.exports = apiRoutes;

todo.js route

const todo = router => {
  router.get('/', function(req, res, next) {
    res.json({ msg: 'This is CORS-enabled for all origins!' });
  });
};

Answer 1

return app(); should just be return app; (with no parentheses). A router is called as a function by express when handling a request, not during setup.