Accessing to parent var of my module in node.js

Question

I'm creating a module in node.js and i would like to access to the variables of the level where is being loaded the module.

var externalvar = 12345;

var mymodule = require('mymodule');

Is possible access to externalvar inside of mymodule?

Answer 1

Yes.

var externalvar = 12345;

var mymodule = require('mymodule')(externalvar);

Inside your module:

module.exports = function(val) {
    console.log(val); //12345
};

Answer 2

I think this is the best and the only way to do it.

externalvar = 12345;

Or

global.externalvar = 12345;

Inside the module

module.exports = function() {
    console.log(global.externalvar); //12345
};

But this is not working

var externalvar = 12345;
console.log(global.externalvar); //undefined