everything is correct with logic

Nothing is correct with this logic. You're providing only partial implementation of sort function. It may work in later node versions, but you can't rely on that.

expected '[9,9,9,9,1,2,1,1,3,1,0,0,0,0,0,0,0,0,0,0]' to equal '[9,9,1,2,1,1,3,1,9,9,0,0,0,0,0,0,0,0,0,0]'
            your function returned this                               this was the expected value

Fix your code.