Expressjs Req.method TypeError: Cannot read property 'method' of undefined

Question

I have an error while running a node express server:

index.js.

const
    bodyParser = require('body-parser'),
    express = require('express'),
    path = require('path');

const config = require('./config');

const app = express();

const mongoose = require('mongoose');

const apiTodos = require('./api/todos');

// connection mongodb via mongoose;
mongoose.connect('mongodb://localhost:27017/todoslist', { useNewUrlParser: true });

app.use(bodyParser.json());

app.use('/api/todos', apiTodos);

app.use('/', express.static(path.resolve(app.get('appPath'))));

app.listen(config.port, (err) => {
    if (err) { return console.log('Error:', err); }
    console.log('Listening on port %d', config.port);
});
module.exports = app;

./api/todos(point in index.js)

const express = require('express');
const Router = express.Router();

const controller = require('./todos.controller');

let router = new Router();

router.get('/check', controller.check);

module.exports = router;

todos.constroller

const tasklist = require('./todos.model');

    let check = new Promise((resolve, reject) => {
        setTimeout(function() {
            (req, res) => {
                tasklist.find({})
                .then(data => {
                    resolve(console.log(data));
                    // resolve(res.status(200).json({ doc: data }));
                })
                .then(err => {
                    console.log(err);
                    // res.status(503).json({ msg: err });
                });
            }
        }, 300);
    });
    module.exports = check;

Error message:

node_modules\express\lib\router\index.js:138 debug('dispatching %s %s', req.method, req.url); ^

TypeError: Cannot read property 'method' of undefined

I don't know what I did wrong, how can I solve this?

Answer 1

after 6hours on that i got the probleme;

the probleme is how i module.exports "constrollers";

todos.controller

the wrong way:

const tasklist = require('./todos.model');

    let check = new Promise((resolve, reject) => {
        setTimeout(function() {
            (req, res) => {
                tasklist.find({})
                .then(data => {
                    resolve(console.log(data));
                    // resolve(res.status(200).json({ doc: data }));
                })
                .then(err => {
                    console.log(err);
                    // res.status(503).json({ msg: err });
                });
            }
        }, 300);
    });
    module.exports = check;

and the right way:

const tasklist = require('./todos.model');
module.exports = {
  check: (req, res, next) => {
        tasklist.find({})
        .then(data => {
          if (data === null) {
            res.status(404).json({ errmsg: 'aucune Competences trouver' });
          } else {
            res.status(200).json({ errmsgok: 'cool', doc: data });
          }
        })
        .catch(() => {
          console.log(err);
        });
  }
};

i should have export modules as json type, and promise is not a problem it's your chose voilà

thx for all the help!!!