export const chunk = <T>(arr: readonly T[], size: number): T[][] => {
  const res: T[][] = [];
  for (let i = 0; i < arr.length; i += size) {
    res.push(arr.slice(i, i + size));
  }
  return res;
};

// Usage
chunk([1, 2, 3, 4, 5], 2);
// [[1, 2], [3, 4], [5]]