What are the main differences between ES Modules and CommonJS?
The main differences include syntax, loading mechanisms, and scope. ES Modules use import
and export
, while CommonJS uses require
and module.exports
. ES Modules are loaded asynchronously, while CommonJS is synchronous.
Can you explain the implications of these differences for performance?
Sure! ES Modules can improve performance due to their asynchronous loading, allowing for better optimization in modern browsers. CommonJS, being synchronous, can lead to blocking behavior, especially in larger applications.
Are there any compatibility issues I should be aware of?
Yes, some older environments may not support ES Modules natively, requiring transpilation or bundling. CommonJS is widely supported in Node.js, but using ES Modules in Node.js requires specific configurations.
Which one should I use for a new project?
It depends on your project requirements. If you're targeting modern browsers and want better performance, go with ES Modules. If you're working in a Node.js environment or need compatibility with older systems, CommonJS might be the better choice.
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