jeffvan576

/* Final Refactor */
// This is the final form of the function. I included the first iteration below to show my thought process as well as how the code was refactored
function flatten (arr) {
  if (!Array.isArray(arr)) return -1;

  return arr.reduce((p, c) => !Array.isArray(c) ? p.concat(c) : p.concat(flatten(c)), []);
}
/* End Final Refactor */

/* First Iteration - With Comments */

jeffvan576

// Import scrollbar size helper

import scrollbarSize from 'dom-helpers/util/scrollbarSize';

// Helper function

adjusted (width, height) {
  const {
    columnWidth,
    columnCount,