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\')         


        

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

You should just put the same code in user.js

app.js

var client = require('./database.js').client; // if you need client here at all
var user = require('./user.js');

user.js

var client= require('./database.js').client;
exports.find = function(id){
  //client.query.....
}

I don't see any drawbacks by doing it like this...

Answer 3

Why do you use require, for scr, no prom use source. It's the same as require and we can pass args in this fuction.

var x="hello i am you";
console.log(require(x));  //error
console.log(source(x));   //it will run without error

Answer 4

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.....
}