• return type altered
• tester adapted (this translation was from before I had created my helper function stringer)

C Translation (user somewhat inactive).

You should not post methods / code / solutions without using the spoiler flag, or else anyone can see it. I have added the flag to your comment.

but it's a palindrome...

When you observe the error feedback it tells you that your function returns NaN, so you should start debugging with console to see what is what and why that happens in the first place.

Specifically, look at what lastIndex amounts to, and what results from that.

Good luck!

First of all, please do not post as an issue when you do not know why your code does not pass. That's reserved for when there's a problem with the kata code and you can give examples as to why. Instead, post as a question.

how does the tester expected them to be spelled?

that would be a world better than expecting to one day have literally dozens of near duplicate kata

Fork

• JS random tests rewritten

No Random Tests

no random tests

Fork

• adds random tests

Even if the two entities of dictionary and alphabet are arbitrarily defined as follows:

let dictionary = {};
let alphabet = [];

The error feedback states:

expected NaN to equal 4359030
expected '' to equal 'SUPERMAN'

...although the expected functions temselves are strictly returning number and string values respectively, as such:

function encript(s) {
  return 4359030;
}

function decript(n) {
  return "HELLO";
}

ReferenceError: dictionary is not defined
ReferenceError: alphabet is not defined

Nowhere in the description does it tell the user to define these.

return, not print