Replace = function (array, oldChild, newChild)
{
    var index1 = array.indexOf(oldChild);
    var index2 = array.indexOf(newChild);

    if (index1 !== -1 && index2 === -1)
    {
        array[index1] = newChild;

        return true;
    }
    else
    {
        return false;
    }
}
Replaces an element of the array with the new element.
The new element cannot already be a member of the array.
The array is modified in-place.

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

@param {array} array - The array to search within.
@param {*} oldChild - The element in the array that will be replaced.
@param {*} newChild - The element to be inserted into the array at the position of `oldChild`.

@return {boolean} Returns true if the oldChild was successfully replaced, otherwise returns false.