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3. Universal ⁢Module Definition⁣ (UMD)

UMD aims to be compatible with both CommonJS and AMD, providing a single module format that can work in various environments.

Syntax: A wrapper that detects the environment and uses the appropriate module loading mechanism.
Use Cases: Ideal ⁣for libraries intended to be used in both Node.js and browser ⁤environments.
Flexibility: Offers⁣ the broadest compatibility.

Syntax: import and export keywords.
Use Cases: ⁢Increasingly becoming the standard for modern ⁤JavaScript growth.
Browser Support: ⁢ Native support in modern ⁤browsers is⁤ growing,but may require transpilation (using tools like Babel) for older browsers.

How⁣ module Loaders Work: A ⁣Closer Look

Let's break down the process of how a module loader typically operates:

1. Configuration: You define a configuration file (often in JSON format) that maps module names to their corresponding file paths.
2. Dependency Resolution: When you request a module, the loader analyzes its dependencies.
3. Loading: The loader fetches the required modules, potentially in parallel for asynchronous loading.
4. Execution: The loader executes ⁢the modules in the correct order,⁤ ensuring dependencies are met.
5. Caching: Loaded modules are often cached to ⁢improve⁤ performance.

Practical Example (Conceptual)

Imagine you have two modules: moduleA.js