Create an array of elements split into groups the length of size

chunck.ts

/**
 * Creates an array of elements split into groups the length of size
 *
 * @template T
 * @param {T[]} input
 * @param {number} size
 * @returns {T[][]}
 */
export const chunk = <T>(input: T[], size: number): T[][] => {
    return input.reduce((array, item, index) => {
      return index % size === 0
        ? [...array, [item]]
        : [...array.slice(0, -1), [...array.slice(-1)[0], item]];
    }, [] as T[][]);
};