"but it works locally!"

not a kata issue

I neither knew. The solution is excellent

I am doing this kata in C and found an issue in the same test:

{
char* a1[] = {"it", "wkppv", "ixoyx", "3452", "zzzzzzzzzzzz"};
dotest(a1, 5, 3, "ixoyx3452zzzzzzzzzzzz");
}

Error. Expected ixoyx3452zzzzzzzzzzzz but got wkppvixoyxzzzzzzzzzzzz

I don't know where you saw that test: it doen't exist. The tests is:
dotest([]string{"it","wkppv","ixoyx", "3452", "zzzzzzzzzzzz"}, 15, "")

Hi Nearh, sorry, I've just realised that you are probably referring to the js translation of the kata. Maybe Matt who kindly contributed the translation is better placed to help you out.

I might be wrong but last time I checked Math.min takes two ints (or two doubles) but I does not take an array as argument!
You will have to find another solution around it.