Unpacks an element into a map of children ids & nodes
/*
<div>
<input id="in" />
<div id="out></div>
</div>
*/
var elem = above element
, unpack = require("unpack-element")
, ever = require("ever")
, elements = unpack(elem)
ever(elements.in).on("keypress", function (ev) {
elements.out.textContent = elements.in.value
})