this one's retired, closing

well, the rank isn't a problem anymore, now that node 10+ versions are there.
On the other hand, it's now a blatant duplicate.

Well, the kata can also be retired ;-)

I agree, but it can't be changed.

Then don't use numbers. Numbers will lose precision in high inputs so it will fail. It's exactly the purpose of this kata. Which is why the description told you to return a string. You have to implement your own addition algorithm.

I'm closing this since this is not a kata issue.

I'm trying to convert number to string to match the test, I used every way on earth to convert it and it's only giving me binary numbers witch never passes
please reCheck the test envieronment, and convert the last answer to number instead of string.

fixed

Evaluation function, which is used in tests, must be moved to test cases and not be preloaded. Otherwise, the users are able to use it!

See: https://www.codewars.com/kata/reviews/57d90abe532584a9ee00003b/groups/5d7d4a1001af0600013d5644

Kata ranking is inconsistent with its actual difficulty.

I think this kata should be 5-6 kyu.

agreed

Thank you. Fixed

This is a 5kyu. At least.

Small typo: The starting code's comment says "Place your code HEAR" instead of "Place your code HERE" :)