Node.js fs Module
The fs (file system) module is a core Node.js library that provides an API for interacting with the file system on a computer. It allows developers to perform operations such as reading, writing, updating, and deleting files and directories, as well as managing file metadata and permissions. This module supports both synchronous and asynchronous methods, making it essential for handling file-based tasks in Node.js applications.
Developers should learn the fs module when building Node.js applications that require file manipulation, such as reading configuration files, logging data to files, processing uploaded files in web servers, or managing local data storage. It is particularly useful for server-side scripting, CLI tools, and data processing pipelines where file I/O operations are common, offering flexibility with callback-based, promise-based, and synchronous approaches to suit different performance needs.