Needs random tests.

the array is not a numeric array

Infinity is tested but not negative numbers, non-integral numbers, or even non-numbers (which would be the most obvious candidates of not a numeric). NaN is not tested either. Hence it is unclear what is meant by not a numeric array.

then converts it to an integer and returns it

What does it mean by "convert to an integer"? The input is a list of integers. There are tests with numbers that aren't digits in the actual tests.

Please follow proper JS conventions in initial code:

• function name should be in camelCase
• things should not be defined in global scope. They should go into proper scoping (module scope / local scope).

Issue to send this kata to draft state.

• You added a rule that is not checked by the tests. I can still use array.
• Duplicate of https://www.codewars.com/kata/5168bb5dfe9a00b126000018