Mastering Debugging in Node.js with Node Inspector

Explore Node Inspector, a powerful GUI-based tool for debugging Node.js applications. Learn how to install, set up, and use Node Inspector for efficient debugging, and discover why the built-in Node.js debugger may be the better choice for modern development.

Export Module in Node.js

Learn how to expose different types as modules using module.exports in Node.js. This special object allows you to export functionalities from your module.

Export Literals

Export a simple string literal:

module.exports = 'Hello world';

Hello world

Export Object

Export an object with properties:

module.exports = {
    greeting: 'Hello world'
};

Hello world

Export Function

Export a function:

module.exports = function (msg) {
    console.log(msg);
};

Hello world

Export Function as a Class

Export a function that acts like a class:

module.exports = function (firstName, lastName) {
    this.firstName = firstName;
    this.lastName = lastName;
    this.fullName = function () {
        return this.firstName + ' ' + this.lastName;
    };
};

James Bond

Load Module from a Folder

Import a module from a subfolder:

var log = require('./utility/log.js');

Log module loaded

For a folder with a package.json file, Node.js uses the main entry to find the module. If the package.json is missing, it defaults to index.js.