Function chunks

utils/array.js:9–19

* Creates an array of elements split into groups the length of size. If array can't be split evenly, the final chunk will be the remaining elements. * description credit: https://lodash.com/docs/4.17.15#chunk * source code inspiron: https://youmightnotneed.com/lodash#chunk * @param {array}: array

(array, size = 1)

 * @return {array}: array of arrays of elements split into groups the length of size.
 */
function chunks(array, size = 1) {
  if (!Array.isArray(array) || size < 1) {
    return [];
  }
  const temp = [...array];
  const result = [];
  while (temp.length) {
    result.push(temp.splice(0, size));
  }
  return result;
}

/**
 * Checks if two arrays have any common items