I'm stuck on the pipeline tests(submit), the first 4 test pass, but the 5th fails. It looks like the test has a function called _fifth and the seed is an array of numbers 1-9, my pipeline function returns 5, but test fails stating that it's looking for -5.

I like this as the best practice, because it only has to filter 6 items. The other solutions that don't use .slice have to itterate over the entire array.