Function spliceOne

benchmark/array_splice.cjs:14–20

(array, index)

}

function spliceOne(array, index) {
  for (let i = index, k = i + 1, n = array.length; k < n; i += 1, k += 1) {
    array[i] = array[k];
  }
  array.pop();
  return array;
}

class SubArray extends Array {
  spliceOne(index) {