index.js

/*! (c) Andrea Giammarchi - ISC */
var Wire = (function (slice, proto) {

  proto = Wire.prototype;

  proto.ELEMENT_NODE = 1;
  proto.nodeType = 111;

  proto.remove = function (keepFirst) {
    var childNodes = this.childNodes;
    var first = this.firstChild;
    var last = this.lastChild;
    this._ = null;
    if (keepFirst && childNodes.length === 2) {
      last.parentNode.removeChild(last);
    } else {
      var range = this.ownerDocument.createRange();
      range.setStartBefore(keepFirst ? childNodes[1] : first);
      range.setEndAfter(last);
      range.deleteContents();
    }
    return first;
  };

  proto.valueOf = function (forceAppend) {
    var fragment = this._;
    var noFragment = fragment == null;
    if (noFragment)
      fragment = (this._ = this.ownerDocument.createDocumentFragment());
    if (noFragment || forceAppend) {
      for (var n = this.childNodes, i = 0, l = n.length; i < l; i++)
        fragment.appendChild(n[i]);
    }
    return fragment;
  };

  return Wire;

  function Wire(childNodes) {
    var nodes = (this.childNodes = slice.call(childNodes, 0));
    this.firstChild = nodes[0];
    this.lastChild = nodes[nodes.length - 1];
    this.ownerDocument = nodes[0].ownerDocument;
    this._ = null;
  }

}([].slice));