Is there a better way of performing array functions on a collection

Collections... While having their advantages are a little bit painful as well. Want to pollyfill a lot of modern Javascript functions such as Array.forEach and Array.reduce but as I understand collections are not Arrays so pollyfilling the prototype is not going to help me too much.

I wrote a little function that converts a collection to an array:

/**
 * Converts Adobe collection objects to JavaScript arrays
 *
 * @version 1.0.0
 */
function collectionToArray(col) {

  'use strict';

  var array = [];

  Array.prototype.forEach.call(col, function(itm) {

  array.push(itm);

  });

  return array;

}

It works... It returns an array that I can perform native Javascript functions on. I just wanted to check with the community if this went against what is considered best practices for Adobe scripting.