MoveUp = function (array, item)
{
    var currentIndex = array.indexOf(item);

    if (currentIndex !== -1 && currentIndex < array.length - 1)
    {
        //  The element one above `item` in the array
        var item2 = array[currentIndex + 1];
        var index2 = array.indexOf(item2);

        array[currentIndex] = item2;
        array[index2] = item;
    }

    return array;
}
Moves the given array element up one place in the array.
The array is modified in-place.

@function Phaser.Utils.Array.MoveUp
@since 3.4.0

@param {array} array - The input array.
@param {*} item - The element to move up the array.

@return {array} The input array.