What are the differences in module loading in JavaScript?

What are the differences in module loading in JavaScript?

In JavaScript, there are mainly two types of module loading: CommonJS and ES Modules. CommonJS is synchronous and used primarily in Node.js, while ES Modules are asynchronous and designed for the browser.

Can you explain how CommonJS works?

CommonJS allows you to use the require function to import modules and module.exports to export them. This makes it easy to manage dependencies in a synchronous manner.

What about ES Modules?

ES Modules use the import and export syntax. They support asynchronous loading, which is beneficial for performance, especially in web applications.

Are there any compatibility issues between the two?

Yes, there can be compatibility issues. For instance, ES Modules cannot be directly used in Node.js without specific flags or configurations, and vice versa.

Which one should I use for a new project?

If you're building a web application, it's recommended to use ES Modules for better performance and future compatibility. For server-side applications, CommonJS is still widely used.