@SEEK Can you give me a little more info on what you're working on? If it's a simple object it's no big deal. If you're doing any super complex mutation in the form of a global state it may help to use. Heres a list of libraries that will do that for you:

https://github.com/collections/javascript-state-management

But I've never had to use one for a Node.JS application so idk how it'd work there. But that's how you'd do it for the browser anyhow