ok, this was a pretty good challenge.
I took a while to get it what's going on.

While you doing this challenge you should be patient. It's so hard it's looks, but has a lot
serialization to deal with.

this is a pretty one ya

I don't know how much I am enjoying finish this challenge.
Seems something "alien" the first as you saw it, but it's pretty simple tho.

I recommend you start your research from spread operators.

Yep. I was come back here to say exactly this.

"TypeError: Array.from(...).flat is not a function"

It's passing all tests but one. Sounds a test case issue.

Yes they is.

If you run more than once sometimes will break it

Test is not defined

This random tests are broken tho

Test are not working correctly. It's broking here:

sortme(["Want","New","she","great","was","Of","Little","An","part","Problem","Few","little"]) 
should equal ["An","Few","great","Little","little","New","Of","part","Problem","she","Want","was"]
expected [ Array(12) ] to deeply equal [ Array(12) ]
Completed in 2ms

But if a ran in my local machine it's shows the correct result.

Even your code is right the test doesn't pass.

dont change state directly

I thought something like that after finished my solution

You need to thinking stuff more simplier

I solve the problem and the show me the same value, but the console says is wrong? wtf