.

The final test does, but randomized. Maybe you were so lucky that not a single test out of 200 test cases generated a number.

The Dart Translationr didn't appear in the kata

Ranks can't be changed though.

I'm sure most people here are better educated in mathematics than I, but I at least do know it's all math here. If there is pure math or unpure math, okay, I don't know. The point of this was: not to use functions. That having been said, I would like to know why MasterZeNoX considers his code "purer". Thanks all :)

@rowcased It's all math, though... floor and log10 is just math, not JS. What's not pure math about it?

what pure? looks like you used a couple methods there...

A "purer" maths approach would be Math.floor(Math.log10(x)) + 1

But I have reservations about initing two related variables separately. Define y = 10**(n-1). Also, x = 0 => n = -323 ?!?

Codewars has some stuff before your solution, so the line numbers are inaccurate. Also, not an issue.
Please post your code with a spoiler flag so we can help.