Define Config Variables For require() Lib

Question

I am making a library in NodeJS and it requires some configuration variables
I want to be able to define those variables in the main js file, and be able to use them in the core.js file like so

var config1 = "stuff"; 
var config2 = "more stuff;

var db = require('./core.js'); //this file uses config1 and config2

Is there any way to do this WITHOUT using exports.config1 and including the file in core.js?
I'm sorry if this is obvious but I couldn't find anything on google.

EDIT
I used a class with constructor

var config1 = "stuff"; 
var config2 = "more stuff;

var tt = require('./core.js');
const db = new tt(config1, config2);

@Malice it isnt a duplicate the point is going over your head. — Amateurz, Jan 06 '18 at 03:39
Sorry, I meesed up with the links. You can certainly use what is said here. https://stackoverflow.com/questions/9146980/how-can-i-pass-a-variable-while-using-require-in-node-js — Malice, Jan 06 '18 at 04:34
You basically need to strucutre your core.js a little differently — Malice, Jan 06 '18 at 04:35

Ishan Thilina Somasiri · Answer 1 · 2018-01-06T02:17:00.307

0

One way to do this is define them as global variables.

main.js

global.config1 = "stuff"; 
global.config2 = "more stuff;

Then you can access them in the main.js.

core.js

console.log(global.config1)

Also please note that global is deprecated. You'll see the following error.

(node:59502) DeprecationWarning: 'GLOBAL' is deprecated, use 'global'

Another thing to note is that you should be cautious with putting variables in the global scope.

edited Jan 06 '18 at 02:17

answered Jan 06 '18 at 01:14

Ishan Thilina Somasiri

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I think you missed the point, i want to define config1 and config2 in main.js – Amateurz Jan 06 '18 at 01:39
It's just a matter changing file names. See the updated answer. configs are defined in main.js. They are accesses in core.js – Ishan Thilina Somasiri Jan 06 '18 at 02:17

Define Config Variables For require() Lib

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