How to expand nodejs module

Question

How to expand nodejs module

I would like to expand nodeJs module.

For example, I want to add a function into Utilities module.

like detect empty JSON object

function isEmptyObject(obj) {
  return !Object.keys(obj).length;
}

So, I can use util.isEmptyObject() to detect empty JSON object.

Is it a good way to expand nodeJs module?

javascript
node.js
module

Answer 1

You can extend "utils" with defining your "UtilEx" module:

/* utils_ex.js */
var utils = require('utils');
utils.isEmptyObject = function() {  };

exports = module.exports = utils;
/* end of utils_ex.js" */

/// client js
var utils = require('utils_ex');