ES Modules
ES Modules (ECMAScript Modules) is the official, standardized module system for JavaScript, enabling developers to organize code into reusable, encapsulated units that can be imported and exported across files. It provides a native, browser-supported way to manage dependencies without relying on external tools or bundlers in modern environments. This system uses the `import` and `export` keywords to define module boundaries and facilitate code sharing.
Developers should learn ES Modules to write modular, maintainable JavaScript code that works natively in modern browsers and Node.js, reducing reliance on build tools for basic module functionality. It is essential for projects targeting contemporary web standards, such as single-page applications or server-side JavaScript, where code organization and dependency management are critical. Use cases include building scalable web apps, creating reusable libraries, and improving code readability through explicit imports and exports.