Module design

Design the skeleton of the helper library module.

Project: Helper library

In this 5-lesson project you will build a reusable helper library. Each lesson adds one piece, and by the final lesson you will have a working module. All helpers live inside one helpers object.

In Node.js the way to export a module is module.exports. When you write module.exports = helpers, the helpers object becomes available from other files with require. By grouping helpers in an object and exporting it, you create a toolkit usable anywhere in your application. Each lesson's starting code will contain the previous lesson's solution, so the library grows step by step.

The helpers object

First we define an empty helpers object. In the following lessons we will add methods to it. For now we prepare the skeleton and verify it works with console.log.

Example: const helpers = {}; defines the empty object. module.exports = helpers; exports it. console.log("Ready") shows the program runs. module.exports passes a reference, so methods added to helpers later also appear in the exported object. This is the key to growing the library piece by piece.

Exercise Define the helpers skeleton

Define an empty object named helpers. Export it with module.exports. Print "Ready" with console.log.

Show example solution

const helpers = {};
module.exports = helpers;
console.log("Ready");

Test yourself

What does module.exports do?
```
module.exports = helpers
```
- helpers nesnesini siler
- helpers nesnesini gizler
- Exports the helpers object
- Renames the helpers object
Show answer

Exports the helpers object — module.exports exposes helpers to other files.

Complete the export line

module.exports = ____;

Show answer

module.exports = helpers;

Match each piece to its role

const helpers = {}

Defines an empty object
module.exports

Exports
require

Imports a module
console.log

Prints output

Next lesson: String helpers

We Are Enhancing Your Experience

Cookie Preferences

Strictly Necessary Cookies

Analytical Cookies