Redux: Handle an Action in the Store: hidden requirement

[lynxlynxlynx]

Describe the bug
The challenge throws browser console errors if you manually define an explicit new state. It works if you just pass return {login: true};. It can be confusing to the user, since there was no mention of such restrictions, nor is the real error visible without opening the browser console ... which then looks like a pipeline issue. And for complexer states, typing out the whole structure just to change one property is an antipattern.

To Reproduce
https://learn.freecodecamp.org/front-end-libraries/redux/handle-an-action-in-the-store

let newState = { ...state };
newState.login = true;
return newState;

Expected behavior
I think it's enough to add another line to the challenge text telling the users to just return a new anonymous state object.

Desktop (please complete the following information):

• OS: linux
• Browser: firefox, chromium

[ojeytonwilliams]

So, the problem is that the editor's Babel preset is es2015 and the syntax to spread objects is a language feature from es2018. I'll take a look and see if that can be updated.