Yeah, I got it since then. I'm not sure about split

It's only one loop!

One loop deep, maybe. How can you sort() a thing without looping over it? And I'm out of my league so I'll just ask: does str1.split('') provide a new view into existing data, or does it have to loop over and copy data piece by piece into a new structure?

lmao

Yeah JFC. I was so completely lost until I just ran a sample function logging the arguments and what was expected and it instantly made sense. What a convoluted mess of a description

feel "wtf" bcause 'details' section doesnt explain what to do with this construction (("Hello")("World!")("how")("are")("you?")()), and even with solutions i really can't understand how it all work, this kata feels like 5+ kyu difficulty for me

Just take a look at how many times the function is being called, and if you're not returning anything, it can't call undefined("some string"), which is why you're seeing the error.

hmm okay. I'll try to reevaluate. My apologies

it works correctly in JS. The task is a bit unusual, that's all.

But I'm not returning anything?

but instead if throws a 'createMessage is not a function error'

It may sound surprising, but this message shows up exactly because you're returning a string/undefined, instead of a function.

I'm all ears if I am incorrect, but that's what I'm observing. Sorry, I am not tryng to sound arrogant I am totally aware that I could be wrong, but I have never seen anything like this before. Please correct me if I'm wrong.

No, I tested it out with just the most basic function declaration. It obviously should fail the specs but instead if throws a 'createMessage is not a function error'. The problem isn't my code, it is that the assert function is calling createMessage inappropriately.

function createMessage() {
console.log('This is a function')
}

it calls the function inappropriately

As far as I can tell, the only thing that's broken here is your solution. The description has an example of how it's supposed to work, so you can have a general idea about what to expect - if you don't know how to achieve this, how come it's the kata's fault?

This kata does not work for JS, as it calls the function inappropriately. It seems like a fun kata, would love to get this fixed.