I like this one!

hehe, i also wonder why, it can be "clever". Happy to see like minded peer here

Higher order functions are automatically considered to be great practices when solving base questions, I believe

Why was this rated as one of the best practices?

i so overthunk it. please god give me the strength to master 7 kyu's

No tiene sentido el tuyo por que .map() internamente crea una nueva matriz con los values

You should create a synchronous function that takes 7 seconds.

The log says 7000+ ms since it waits for the process to end. Meanwhile, Node have to wait until all promises are resolved. That's why the log says 7 seconds but not the tests.

it's nice when mine matches the top answer

funny but good! :D

• The tests will check for objects' exact equality so if you return copies of objects your test results will fail

This is not true ( anymore ) and should be taken out.

Tests are vulnerable to input modification.

If you like your object equality, the pieces should be ( individually ) frozen. Object equality is actually unnecessary, and deepcopied pieces could be passed, but that's probably more work.

Performance constraints are different, and the identifyable parts are also different enough to make these two different kata's.

These solutions showing me how I need to think differently and not overcomplicate things lol.