Exercise: record positions

Write a function function recordIndexes(nums) that returns an array of the indexes of all records of the array nums, in increasing order. A record is an element that is larger than every element before it; the first element is always a record.

• recordIndexes([3, 1, 4, 1, 5]) → [0, 2, 4]
• recordIndexes([5, 2, 5]) → [0]
• recordIndexes([-5, -2, -9]) → [0, 1]

Constraints: nums holds from 0 to 1000 integers, each from -1000000 to 1000000, and all of them may be negative; an element equal to the largest of the ones before it does not count as a record; for an empty array the result is an empty array.

The tests print the result through JSON.stringify: it turns an array into a string without spaces, for example [0, 2, 4] into [0,2,4].

Do not add extra imports unless the task says so explicitly.