I would never think about reduce and recursive stuff, for sure is a good skill to think about.

You would love this kata where lines are restricted to 2 characters >:)

https://www.codewars.com/kata/5935558a32fb828aad001213/javascript

Well, here in codewars, one-liners are actually best practice ;)

I think, its a bad ptactice to write a code in one line. It's a my opinion, I'm not a hater)) gl ;)

Wery intresting : ) but I'm din't understand your it

This kata has been unpublished, it does not accept solutions until author publishes it again.

Hello! It's impossible to submit any correct solution. Can you fix it, please?

Using const to declare obj does not hold the values of each property constant; you would have to use const obj.freeze().