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syntax: define() to define modules and asynchronous loading.
Use Cases: ⁤ Widely ⁤used in browser-based applications, especially before ES modules became‍ prevalent.
Example:

javascript
    // moduleA.js
    define(function() {
      return function() {
        console.log("Hello from Module A!");
      };
    });

    // moduleB.js
    define(['./moduleA'], function(moduleA) {
      moduleA();
    });
    

3.Universal Module Definition (UMD)

UMD aims to be compatible with ⁣both⁢ CommonJS and AMD, providing a​ single module format that works in various ⁤environments. It attempts to detect the module⁢ system and adapt accordingly. Syntax: A wrapper function that checks for different​ module environments.
Use Cases: Useful for creating libraries that need to work in both node.js and the ​browser.

4. ECMAScript Modules (ESM)

The official standard module system for JavaScript, introduced with ES6 (ES2015). ESM uses static analysis to determine ‍module dependencies, enabling optimizations and better performance.

Syntax: import to import modules and export to export.
Use Cases: Increasingly becoming the preferred module format for modern JavaScript advancement.
*​ Example:

javascript
    // moduleA.js
    export function sayHello() {
      console.log("Hello from Module A!");
    }

    // moduleB.js
    import { sayHello } from './moduleA.js';
    sayHello();
    

How Module Loaders ⁢Work: A Closer Look

Irrespective of the format, module