Get array's depth in JavaScript

Question

In order to get the array\'s depth I thought I can use the flat() method like so:

Answer 1

This one is a bit easier to understand, if you'd like.

var array = [
[0, 1],
[1, 2, 3, [1, 0]],
[2, 3, [1, 2, [5]]],
[1, [6, 3, [1, 2, [1, 0]]]],
[2]
]

function depth(array, rec) {
if (!Array.isArray(array)) throw new Exception('not an array');

var res = rec;
for(var i = 0; i < array.length; ++i) {
    if (Array.isArray(array[i])) {
    var subDepth = depth(array[i], rec + 1);
    if (subDepth > res) {
        res = subDepth;
    }
  }
}
return res;
}