/**
 * @TODO move this
 * @TODO support collections
 * @memberOf util
 *
 * Creates a new list out of the two supplied by pairing up equally-positioned
 * items from both lists. The returned list is truncated to the length of the
 * shorter of the two input lists.
 * Note: `zip` is equivalent to `zipWith(function(a, b) { return [a, b] })`.
 *
 * @param {Array} list1 The first array to consider.
 * @param {Array} list2 The second array to consider.
 * @return {Array} The list made by pairing up same-indexed elements of `list1` and `list2`.
 *
 * @fork v0.1.0
 * @category List
 * @sig [a] -> [b] -> [[a,b]]
 * @symb R.zip([a, b, c], [d, e, f]) = [[a, d], [b, e], [c, f]]
 *
 * @example
 *
 *    zip([1, 2, 3], ['a', 'b', 'c']);
 *    //=> [[1, 'a'], [2, 'b'], [3, 'c']]
 *
 */
export default function zip(a, b) {
  const result = []
  let idx = 0
  const len = Math.min(a.length, b.length)

  while (idx < len) {
    result[idx] = [a[idx], b[idx]]
    idx += 1
  }

  return result
}