Negative numbers to the left

Write a function groupNegatives(numbers) that returns a new array with the negative numbers on the left: first all negative numbers, then all other numbers.

• numbers is an array of integers. It can be empty.
• 0 is not negative: it goes to the right group, together with the positive numbers.
• Keep the order inside each group as in numbers. [-5, 10, -3, 8, -1, 6] gives [-5, -3, -1, 10, 8, 6]. Do not sort the numbers.
• Return a new array. Do not change (do not mutate) numbers.

Each element goes to one of two groups. filter can pick the elements of one group.