Immutable move item in an array

immutableMove.js

/**
 * Immutable move item
 */
const move = (arr, from, to) => {
  const clone = [...arr];
  Array.prototype.splice.call(clone, to, 0,
    Array.prototype.splice.call(clone, from, 1)[0]
  );
  return clone;
};

/**
 * Immutable move target a distance
 */
const moveTarget = (arr, target, distance) => {
  const from = arr.indexOf(target);
  if (~from) {
    return move(arr, from, from + distance);
  }
};

describe('move', () => {

  it('can move', () => {
    const input = [1, 2, 3, 4, 5];
    const expected = [1, 3, 4, 2, 5];
    Object.freeze(input);
    Object.freeze(expected);
    const actual = move(input, 1, 3);
    expect(actual).toEqual(expected);
  });

  it('can moveTarget', () => {
    const input = [1, 2, 9, 4, 5, 6, 7];
    const expected = [1, 2, 4, 5, 9, 6, 7];
    Object.freeze(input);
    Object.freeze(expected);
    const actual = moveTarget(input, 9, 2);
    expect(actual).toEqual(expected);
  })
});