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In Node.js, modules allow you to organize and structure your code by dividing it into separate files. Here's a complete description of how to create, export, and import modules in Node.js:

Creating a Module: A module is simply a JavaScript file containing functions, variables, or classes that encapsulate a specific functionality. Each file can be considered a separate module that you can later use in other files.

Exporting a Module: To make a module accessible to other files, you use the module.exports object. You can export functions, variables, or objects by attaching them to module.exports. There are two common ways to export:

Exporting specific functions or objects by assigning them individually to module.exports.
Exporting everything at once by assigning an object to module.exports containing all the functions or variables you want to expose.
Importing a Module: Once you have exported a module, you can use it in other files by importing it with the require() function. When importing, you can access the exported functions, objects, or variables by using the variable to which the module is assigned. This allows you to use the functionality defined in another file.

Importing Built-In Node.js Modules: Node.js provides several built-in modules like fs (file system), http, path, etc. These can be imported using require() without the need to install them, just by specifying the module name.

Relative vs. Absolute Paths: When importing your own modules, you typically use relative paths (e.g., ./ or ../) to point to the location of the file. Absolute paths can also be used but are less common in practice.

Default Export vs Named Export:

Default Export: Used when exporting a single value (function, object, etc.), and it can be imported directly without needing to destructure.
Named Export: Used when exporting multiple values. The imported module must be destructured to access the individual components.
This approach to modularization promotes code reuse, better organization, and maintainability within Node.js applications.

Creating a Module in Node js
Exporting a Module in Node js
Importing a Module in Node js

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