Carry attrs, classes from one element to another.

Install with component(1):

$ component install yields/carry

function Widget(el){
  this.el = carry(el, tpl.cloneNode());
}
new Widget;
new Widget(el);

if a is null a clone of b will be returned. otherwise b's attrs and classes are merged with a, returning a.

Carry over attributes from b to a.

Carry over classes from b to a.

MIT