Not a kata issue, your code does not comply to below

Note: if multiple products have the same revenue, order them according to their original positions in the input list.

Your problem is javascript doesn't handle arbitrary precission numbers like you want. Try doing it another way.

From the Kata's description:

a string of space separated numbers

Your code is expecting a comma separated list.
Please double check your test input in your test code and look at the examples in the Kata's description.

The input is a string of numbers separated with spaces, check how you're trying to convert that to a list, it's wrong. And if your code works in other places, you're not using those input values.

> Input: "10 2 -2 -10"
> Your code: split(',')

:thinking: