Node.js "require" function and parameters

Question

When I do:

lib = require('lib.js')(app) 

is app actually geting passed in?

in lib.js:

exports = module.exports = function(app){} 

Seems like no, since when I try to do more than just (app) and instead do:

lib = require('lib.js')(app, param2) 

And:

exports = module.exports = function(app, param2){} 

I don't get params2.

I've tried to debug by doing:

params = {} params.app = app params.param2 = "test"  lib = require("lib.js")(params) 

but in lib.js when I try to JSON.stringify I get this error:

"DEBUG: TypeError: Converting circular structure to JSON" 

Answer 1

When you call lib = require("lib.js")(params)

You're actually calling lib.js with one parameter containing two properties name app and param2

You either want

// somefile require("lib.js")(params); // lib.js module.exports = function(options) {   var app = options.app;   var param2 = options.param2; }; 

or

// somefile require("lib.js")(app, param2) // lib.js module.exports = function(app, param2) { }