How to require a file in node.js and pass an argument in the request method, but not to the module?

Question

I have a module.js that must be loaded; In order to work needs objectX;

How do I pass the objectX to the module.js in the require method provided by node.js?

tha

Answer 1

The module that you write can export a single function. When you require the module, call the function with your initialization argument. That function can return an Object (hash) which you place into your variable in the require-ing module. In other words:

main.js

var initValue = 0;
var a = require('./arithmetic')(initValue);
// It has functions
console.log(a);
// Call them
console.log(a.addOne());
console.log(a.subtractOne());

arithmetic.js:

module.exports = function(initValue) {
  return {
    addOne: function() {
      return initValue + 1;
    },
    subtractOne: function() {
      return initValue - 1;
    },
  }
}