Algorithm to tile an array. Written in NodeJS

tiler.js

/**
 * Produce a list of list by tiling the originalArray.
 * 
 * @param {int} tileAmount amount of tiles per ligne
 * @param {Array} originalArray the array to tile
 */
function tiler(tileAmount, originalArray) {
  tiles = [];

  for (let index = 0; index < originalArray.length; index++) {
    const element = originalArray[index];
    if (index % tileAmount == 0) {
      tiles.push([]);
    }
    tiles[Math.floor(index / tileAmount)].push(element);
  }

  return tiles;
}