How can I pass a variable while using `require` in node.js?

Question

In my app.js I have below 3 lines.

var database = require('./database.js'); var client = database.client var user = require('./user.js'); 

user.js file looks just like ordinary helper methods. But, it needs interact with database.

user.js

exports.find = function(id){   //client.query..... } 

Apparently, I want to use client inside of the user.js file. Is there anyway that I can pass this client to the user.js file, while I am using require method?

Answer 1

I think what you want to do is:

var user = require('./user')(client) 

This enables you to have client as a parameter in each function in your module or as module scope variable like this:

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

Answer 2

This question is similar to: Inheriting through Module.exports in node

Specifically answering your question:

module.client = require('./database.js').client; var user = require('./user.js'); 

In user.js:

exports.find = function(id){   // you can do:   // module.parent.client.query..... }