Waowww! it is good solving ! :)

Да, интересно в чем проблема

wtf
Тесты это решение не проходит, но attempt прошел успешно

ow,its good!

'filter' creates a new array + iterates through the total array.
the 'reduce' solution stops when needed and returns a boolean.

Right. I was working directly with base array. Now it's ok. Thanks for clarification.

Confirm. Seems like something wrong with random test function for js. Test output:

It should work for random inputs too - Expected: 952, instead got: 146```

My sequence: `[ 9, 1, 5, 42, 146]`

Basic test passed with no errors.

It made me realize that I have no idea on how to debug invisible string characters

I found you can use console.dir() on your result for this case or just test your function in browser's console.

Great, thanks!

Note that if user for some reason defines an empty string as the "name" attribute this approach (name || 'Hero') prevents him to do that. In the kata description we read "user argument or 'Hero'" ("argument", not "name"). So in fact empty string is legal.

In my opinion it's better to use default function parameters (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Default_parameters)
or checking for 'undefined'.