Lately I've been going through ArcGIS JS API samples, but from what I've seen, it looks like all geometric functions always go through server, and use server side REST functions. There is no option to even calculate area of polygon using only JS API without server side funcions. Am I right, or is there something I'm missing here? I have a case, where I have feature layer added from JSON file and I want to use some geometric functions un features inside. Server connection is not an option, everything needs to be done on client side.
Is there a way to do this with ArcGIS JS API only, without using server side tasks? Or maybe some other alternative frameworks, that could use features from JSON file?