Connect configuration variables just once in Node.js

Question

I have some files:

tags.js:

var express = require('express'),
    router = express.Router(),
    monk = require('monk'),
    db = monk('localhost:27017/data');

...

module.exports = router;

records.js:

var express = require('express'),
    router = express.Router(),
    monk = require('monk'),
    db = monk('localhost:27017/data');

...

module.exports = router;

users.js:

var express = require('express'),
    router = express.Router(),
    monk = require('monk'),
    db = monk('localhost:27017/data');

...

module.exports = router;

All the time I have to duplicate my header:

var express = require('express'),
    router = express.Router(),
    monk = require('monk'),
    db = monk('localhost:27017/data');

What's the best solution to connect this configuration variables just once?

I tried this variant In Node.js, how do I "include" functions from my other files?, but that doesn't work, becouse I should use require (for example: require('express')) in tools.js and I got errors.

I also tried this variant node.js - accessing required variables from other files:

toolkit.js:

var express = require('express'),
    router = express.Router(),
    monk = require('monk'),
    db = monk('localhost:27017/data');

tags.js:

var tools = require('../toolkit'),
    router = tools.router;

router.get('/', function(req, res) {
...
});

module.exports = router;

but I got errors again.

user405398 · Accepted Answer · 2015-10-22 07:34:49Z

1

You need to export from toolkit.js. So, your toolkit will look like

var express = require('express');
exports.router = express.Router();
var monk = require('monk');
exports.db = monk('localhost:27017/data');

Now, you can do:

var toolkit = require('path/to/toolkit');
var router = toolkit.router;
var db = toolkit.db;

answered Oct 22, 2015 at 7:34

user405398

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