list-zipper 

Simple list zipper, inspired by Haskell Data.List.Zipper.
If you ever found yourself using something like this:

``javascript
var array = ['foo', 'bar', 'baz'];
var currentIndex = 1;
`

Then you can replace it with:

`javascript
var array = ListZipper(['foo', 'bar', 'baz'], 1);
`

Read the usage section for more details.
You can also find more info about zippers here.

Installation

$3

`
npm install list-zipper
`

$3


`
bower install list-zipper
`

Usage

`javascript
// Move right
ListZipper([1, 2, 3]).next().next().val(); // 3

// Move left
ListZipper([1, 2, 3], 2); // second argument sets the index of currently focused element
.prev().prev().val() // 1

// It doesn't change the original array
ListZipper([1, 2, 3]).next().next().toArray(); // [1, 2, 3]

// It is immutable
var lz = ListZipper([1, 2, 3], 1);
lz.val(); // 2
lz.next().val(); // 3
lz.val(); // 2
lz.prev().val(); // 1
``
More info in API Docs.