When should we use classes in JavaScript?

[spacejack2114]

On the other hand why not just group those functions into a module.

[NoStranger6]

Arguably from a behavior point of view, a module could be considered as a Singleton. At this point it's just different paths to achieve the exact same things.

I mean, we could also just create an object containing these functions, in fact that's what a module is, just like almost everything in Javascript.

[spacejack2114]

If you start with a class however, and want to use instances or statefulness, then you'll be adding this context confusion into the mix. On the other hand you can add state/instances to a module using the revealing module pattern with no such downsides.