Questions And Answers

More Tutorials

NodeJS Hack

Add new extensions to require()

You can add new extensions to require() by extending require.extensions.

For a XML example:

// Add .xml for require()
require.extensions['.xml'] = (module, filename) => {
 const fs = require('fs')
 const xml2js = require('xml2js')
 module.exports = (callback) => {
 // Read required file.
 fs.readFile(filename, 'utf8', (err, data) => {
 if (err) {
 // Parse it.
 xml2js.parseString(data, (err, result) => {
 callback(null, result)

If the content of hello.xml is following:

<?xml version="1.0" encoding="UTF-8"?>
 <qux />

You can read and parse it through require():

require('./hello')((err, xml) {
 if (err)
 throw err;

It prints { foo: { bar: [ 'baz' ], qux: [ '' ] } }.


In this page (written and validated by ) you learned about NodeJS Hack . What's Next? If you are interested in completing NodeJS tutorial, your next topic will be learning about: NodeJS Bluebird Promises.

Incorrect info or code snippet? We take very seriously the accuracy of the information provided on our website. We also make sure to test all snippets and examples provided for each section. If you find any incorrect information, please send us an email about the issue:

Share On:

Mockstacks was launched to help beginners learn programming languages; the site is optimized with no Ads as, Ads might slow down the performance. We also don't track any personal information; we also don't collect any kind of data unless the user provided us a corrected information. Almost all examples have been tested. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. By using, you agree to have read and accepted our terms of use, cookies and privacy policy.