Discussion on: Four Ways to Clone Array with Ease! Easiest Method to Clone Array.

const arr = [1, 2, 3]

// with map
const cloned_with_map = arr.map(i => i)

// with reduce + flat
const cloned_with_reduce = 
  arr.reduce((a, b) => [a, b])
  .flat()

Array.of(arr).flat()