NodeJS Exporting module

Question

Browsing through existing modules in the NPM repository, I've seen modules that uses:

    module.exports = (function(){
        return {
            // objects from the module
        };
    })();

And modules that uses

    module.exports = { //objects };

Is there any performance difference from them? Is there a third option/pattern for module organization in Node?

Thanks!

Answer 1

The 1st approach with anonymous function is used to avoid potential name conflicts. That is the only reason for doing that. There will be no noticeable performance difference between two approaches to take this factor seriously.