ES Modules
ES Modules (ECMAScript Modules) is the official, standardized module system for JavaScript, introduced in ES6 (ECMAScript 2015). It allows developers to organize code into reusable modules that can export and import functionality, enabling better code structure, dependency management, and encapsulation in modern JavaScript applications. ES Modules are natively supported in modern browsers and Node.js, replacing older module systems like CommonJS and AMD.
Developers should learn and use ES Modules for building scalable, maintainable JavaScript applications, as it is the modern standard for modular code organization. It is essential for front-end development with frameworks like React, Vue, or Angular, and for back-end development in Node.js (with native support since Node.js 12). Use cases include splitting large codebases into manageable files, sharing code between projects, and leveraging tree-shaking for optimized bundle sizes in build tools like Webpack or Vite.