Merge branch 'master' of https://github.com/HumairAK/solutions_repo

35 files changed, 0 insertions, 9999 deletions

diff --git a/node_modules/jsdom/lib/README.md b/node_modules/jsdom/lib/README.md
deleted file mode 100644
index 8f0856c..0000000
--- a/node_modules/jsdom/lib/README.md
+++ /dev/null
@@ -1,17 +0,0 @@
-# Note: this codebase is in a transitional state
-
-We're slowly moving from a historical model based on layered "levels" of specs, to the [living standard model](https://wiki.whatwg.org/wiki/FAQ#What_does_.22Living_Standard.22_mean.3F) actually implemented by browsers. As such, the code is kind of a mess.
-
-**Summary**: new features go in `lib/jsdom/living` and follow the code style there; modifications to existing features will require some spelunking to find out what to modify in-place.
-
----
-
-A lot of the main implementation is in `lib/jsdom/level1` and `lib/jsdom/level2`. (That includes things that didn't appear in the original DOM Level 1 and Level 2 specs, just because the code was located there and we had to patch it.) We're trying to avoid adding new code there, but patching old code is often still required.
-
-New features generally go in the `lib/jsdom/living` folder, in nice small files, with a clear coding style enforced by JSHint.
-
-We're planning to fix this whole situation with a multi-stage process:
-
-- First, consolidate any leftovers in `lib/jsdom/browser` and `lib/jsdom/level3`, as well as the more substantial body of code in `lib/jsdom/level2`, into `lib/jsdom/level1`. This will contain the "historical" portion of the jsdom codebase.
-- Then, embark on a major cleanup and refactoring effort, splitting out small pieces from `lib/jsdom/level1` and into `lib/jsdom/living`, cleaning up the code style and spec compliance as we go.
-- Finally, collapse the silly directory hierarchy into something less nested.
diff --git a/node_modules/jsdom/lib/jsdom.js b/node_modules/jsdom/lib/jsdom.js
deleted file mode 100644
index e801634..0000000
--- a/node_modules/jsdom/lib/jsdom.js
+++ /dev/null
@@ -1,379 +0,0 @@
-var fs = require('fs');
-var path = require('path');
-var URL = require('url');
-
-var toFileUrl = require('./jsdom/utils').toFileUrl;
-var defineGetter = require('./jsdom/utils').defineGetter;
-var defineSetter = require('./jsdom/utils').defineSetter;
-var features = require('./jsdom/browser/documentfeatures');
-var dom = require('./jsdom/living');
-var browserAugmentation = require('./jsdom/browser/index').browserAugmentation;
-var domToHtml = require('./jsdom/browser/domtohtml').domToHtml;
-var VirtualConsole = require('./jsdom/virtual-console');
-
-var canReadFilesFromFS = !!fs.readFile; // in a browserify environment, this isn't present
-
-var request = function() { // lazy loading request
-  request = require('request');
-  return request.apply(undefined, arguments);
-}
-
-exports.getVirtualConsole = function (window) {
-  return window._virtualConsole;
-};
-exports.debugMode = false;
-
-// Proxy feature functions to features module.
-['availableDocumentFeatures',
- 'defaultDocumentFeatures',
- 'applyDocumentFeatures'].forEach(function (propName) {
-  defineGetter(exports, propName, function () {
-    return features[propName];
-  });
-  defineSetter(exports, propName, function (val) {
-    return features[propName] = val;
-  });
-});
-
-exports.jsdom = function (html, options) {
-  if (options === undefined) {
-    options = {};
-  }
-  if (options.parsingMode === undefined || options.parsingMode === 'auto') {
-    options.parsingMode = 'html';
-  }
-
-  var browser = browserAugmentation(dom, options);
-  var doc = new browser.HTMLDocument(options);
-
-  if (options.created) {
-    options.created(null, doc.parentWindow);
-  }
-
-  features.applyDocumentFeatures(doc, options.features);
-
-  if (html === undefined) {
-    html = '';
-  }
-  html = String(html);
-  doc.write(html);
-
-  if (doc.close && !options.deferClose) {
-    doc.close();
-  }
-
-  return doc;
-};
-
-exports.jQueryify = exports.jsdom.jQueryify = function (window, jqueryUrl, callback) {
-  if (!window || !window.document) {
-    return;
-  }
-
-  var features = window.document.implementation._features;
-  window.document.implementation._addFeature('FetchExternalResources', ['script']);
-  window.document.implementation._addFeature('ProcessExternalResources', ['script']);
-  window.document.implementation._addFeature('MutationEvents', ['2.0']);
-
-  var scriptEl = window.document.createElement('script');
-  scriptEl.className = 'jsdom';
-  scriptEl.src = jqueryUrl;
-  scriptEl.onload = scriptEl.onerror = function () {
-    window.document.implementation._features = features;
-
-    if (callback) {
-      callback(window, window.jQuery);
-    }
-  };
-
-  window.document.body.appendChild(scriptEl);
-};
-
-exports.env = exports.jsdom.env = function () {
-  var config = getConfigFromArguments(arguments);
-
-  if (config.file && canReadFilesFromFS) {
-    fs.readFile(config.file, 'utf-8', function (err, text) {
-      if (err) {
-        if (config.created) {
-          config.created(err);
-        }
-        if (config.done) {
-          config.done([err]);
-        }
-        return;
-      }
-
-      setParsingModeFromExtension(config, config.file);
-
-      config.html = text;
-      processHTML(config);
-    });
-  } else if (config.html !== undefined) {
-    processHTML(config);
-  } else if (config.url) {
-    handleUrl(config);
-  } else if (config.somethingToAutodetect !== undefined) {
-    var url = URL.parse(config.somethingToAutodetect);
-    if (url.protocol && url.hostname) {
-      config.url = config.somethingToAutodetect;
-      handleUrl(config.somethingToAutodetect);
-    } else if (canReadFilesFromFS) {
-      fs.readFile(config.somethingToAutodetect, 'utf-8', function (err, text) {
-        if (err) {
-          // the toString() test is because in Node.js, there is no proper code for this.
-          // This is fixed in io.js: https://github.com/iojs/io.js/issues/517 so:
-          // TODO: remove when we start requiring io.js
-          if (err.code === 'ENOENT' || err.code === 'ENAMETOOLONG'
-          	|| (err.toString() == 'Error: Path must be a string without null bytes.')
-          ) {
-            config.html = config.somethingToAutodetect;
-            processHTML(config);
-          } else {
-            if (config.created) {
-              config.created(err);
-            }
-            if (config.done) {
-              config.done([err]);
-            }
-          }
-        } else {
-          setParsingModeFromExtension(config, config.somethingToAutodetect);
-
-          config.html = text;
-          config.url = toFileUrl(config.somethingToAutodetect);
-          processHTML(config);
-        }
-      });
-    } else {
-      config.html = config.somethingToAutodetect;
-      processHTML(config);
-    }
-  }
-
-  function handleUrl() {
-    var options = {
-      uri: config.url,
-      encoding: config.encoding || 'utf8',
-      headers: config.headers || {},
-      proxy: config.proxy || null,
-      jar: config.jar !== undefined ? config.jar : true
-    };
-
-    request(options, function (err, res, responseText) {
-      if (err) {
-        if (config.created) {
-          config.created(err);
-        }
-        if (config.done) {
-          config.done([err]);
-        }
-        return;
-      }
-
-      // The use of `res.request.uri.href` ensures that `window.location.href`
-      // is updated when `request` follows redirects.
-      config.html = responseText;
-      config.url = res.request.uri.href;
-
-      if (config.parsingMode === "auto" && (
-        res.headers["content-type"] === "application/xml" ||
-        res.headers["content-type"] === "text/xml" ||
-        res.headers["content-type"] === "application/xhtml+xml")) {
-        config.parsingMode = "xml";
-      }
-
-      processHTML(config);
-    });
-  }
-};
-
-exports.serializeDocument = function (doc) {
-  return domToHtml(doc, true);
-};
-
-function processHTML(config) {
-  var options = {
-    features: config.features,
-    url: config.url,
-    parser: config.parser,
-    parsingMode: config.parsingMode,
-    created: config.created,
-    resourceLoader: config.resourceLoader
-  };
-
-  if (config.document) {
-    options.referrer = config.document.referrer;
-    options.cookie = config.document.cookie;
-    options.cookieDomain = config.document.cookieDomain;
-  }
-
-  var window = exports.jsdom(config.html, options).parentWindow;
-  var features = JSON.parse(JSON.stringify(window.document.implementation._features));
-
-  var docsLoaded = 0;
-  var totalDocs = config.scripts.length + config.src.length;
-  var readyState = null;
-  var errors = [];
-
-  if (!window || !window.document) {
-    if (config.created) {
-      config.created(new Error('JSDOM: a window object could not be created.'));
-    }
-    if (config.done) {
-      config.done([new Error('JSDOM: a window object could not be created.')]);
-    }
-    return;
-  }
-
-  window.document.implementation._addFeature('FetchExternalResources', ['script']);
-  window.document.implementation._addFeature('ProcessExternalResources', ['script']);
-  window.document.implementation._addFeature('MutationEvents', ['2.0']);
-
-  function scriptComplete() {
-    docsLoaded++;
-
-    if (docsLoaded >= totalDocs) {
-      window.document.implementation._features = features;
-
-      errors = errors.concat(window.document.errors || []);
-      if (errors.length === 0) {
-        errors = null;
-      }
-
-      process.nextTick(function() {
-        if (config.loaded) {
-          config.loaded(errors, window);
-        }
-        if (config.done) {
-          config.done(errors, window);
-        }
-      });
-    }
-  }
-
-  function handleScriptError(e) {
-    if (!errors) {
-      errors = [];
-    }
-    errors.push(e.error || e.message);
-
-    // nextTick so that an exception within scriptComplete won't cause
-    // another script onerror (which would be an infinite loop)
-    process.nextTick(scriptComplete);
-  }
-
-  if (config.scripts.length > 0 || config.src.length > 0) {
-    config.scripts.forEach(function (scriptSrc) {
-      var script = window.document.createElement('script');
-      script.className = 'jsdom';
-      script.onload = scriptComplete;
-      script.onerror = handleScriptError;
-      script.src = scriptSrc;
-
-      try {
-        // protect against invalid dom
-        // ex: http://www.google.com/foo#bar
-        window.document.documentElement.appendChild(script);
-      } catch (e) {
-        handleScriptError(e);
-      }
-    });
-
-    config.src.forEach(function (scriptText) {
-      var script = window.document.createElement('script');
-      script.onload = scriptComplete;
-      script.onerror = handleScriptError;
-      script.text = scriptText;
-
-      window.document.documentElement.appendChild(script);
-      window.document.documentElement.removeChild(script);
-    });
-  } else {
-    if (window.document.readyState === 'complete') {
-      scriptComplete();
-    } else {
-      window.addEventListener('load', function() {
-        scriptComplete();
-      });
-    }
-  }
-}
-
-function getConfigFromArguments(args, callback) {
-  var config = {};
-  if (typeof args[0] === 'object') {
-    var configToClone = args[0];
-    Object.keys(configToClone).forEach(function (key) {
-      config[key] = configToClone[key];
-    });
-  } else {
-    var stringToAutodetect = null;
-
-    Array.prototype.forEach.call(args, function (arg) {
-      switch (typeof arg) {
-        case 'string':
-          config.somethingToAutodetect = arg;
-          break;
-        case 'function':
-          config.done = arg;
-          break;
-        case 'object':
-          if (Array.isArray(arg)) {
-            config.scripts = arg;
-          } else {
-            extend(config, arg);
-          }
-          break;
-      }
-    });
-  }
-
-  if (!config.done && !config.created && !config.loaded) {
-    throw new Error('Must pass a "created", "loaded", "done" option or a callback to jsdom.env.');
-  }
-
-  if (config.somethingToAutodetect === undefined &&
-      config.html === undefined && !config.file && !config.url) {
-    throw new Error('Must pass a "html", "file", or "url" option, or a string, to jsdom.env');
-  }
-
-  config.scripts = ensureArray(config.scripts);
-  config.src = ensureArray(config.src);
-  config.parsingMode = config.parsingMode || "auto";
-
-  config.features = config.features || {
-    FetchExternalResources: false,
-    ProcessExternalResources: false,
-    SkipExternalResources: false
-  };
-
-  if (!config.url && config.file) {
-    config.url = toFileUrl(config.file);
-  }
-
-  return config;
-}
-
-function ensureArray(value) {
-  var array = value || [];
-  if (typeof array === 'string') {
-    array = [array];
-  }
-  return array;
-}
-
-function extend(config, overrides) {
-  Object.keys(overrides).forEach(function (key) {
-    config[key] = overrides[key];
-  });
-}
-
-function setParsingModeFromExtension(config, filename) {
-  if (config.parsingMode === "auto") {
-    var ext = path.extname(filename);
-    if (ext === ".xhtml" || ext === ".xml") {
-      config.parsingMode = "xml";
-    }
-  }
-}
diff --git a/node_modules/jsdom/lib/jsdom/browser/Window.js b/node_modules/jsdom/lib/jsdom/browser/Window.js
deleted file mode 100644
index 1cee5cb..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/Window.js
+++ /dev/null
@@ -1,291 +0,0 @@
-"use strict";
-
-var URL = require("url");
-var CSSStyleDeclaration = require("cssstyle").CSSStyleDeclaration;
-var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
-var dom = require("../level1/core");
-var NOT_IMPLEMENTED = require("./utils").NOT_IMPLEMENTED;
-var createFrom = require("../utils").createFrom;
-var History = require("./history");
-var VirtualConsole = require("../virtual-console");
-
-var cssSelectorSplitRE = /((?:[^,"']|"[^"]*"|'[^']*')+)/;
-
-function matchesDontThrow(el, selector) {
-  try {
-    return el.matches(selector);
-  } catch (e) {
-    return false;
-  }
-}
-
-function startTimer(window, startFn, stopFn, callback, ms) {
-  var res = startFn(callback, ms);
-  window.__timers.push([res, stopFn]);
-  return res;
-}
-
-function stopTimer(window, id) {
-  if (typeof id === "undefined") {
-    return;
-  }
-  for (var i in window.__timers) {
-    if (window.__timers[i][0] === id) {
-      window.__timers[i][1].call(window, id);
-      window.__timers.splice(i, 1);
-      break;
-    }
-  }
-}
-
-function stopAllTimers(window) {
-  window.__timers.forEach(function (t) {
-    t[1].call(window, t[0]);
-  });
-  window.__timers = [];
-}
-
-function Window(document) {
-  this.__timers = [];
-
-  // TODO: very little of this belongs on the instance; they should be prototype methods instead.
-
-  var window = this;
-  this._document = document;
-  this.history = new History(this);
-
-  this.addEventListener = function () {
-    dom.Node.prototype.addEventListener.apply(window, arguments);
-  };
-  this.removeEventListener = function () {
-    dom.Node.prototype.removeEventListener.apply(window, arguments);
-  };
-  this.dispatchEvent = function () {
-    dom.Node.prototype.dispatchEvent.apply(window, arguments);
-  };
-  this.raise = function () {
-    dom.Node.prototype.raise.apply(window.document, arguments);
-  };
-
-  this.setTimeout = function (fn, ms) { return startTimer(window, setTimeout, clearTimeout, fn, ms); };
-  this.setInterval = function (fn, ms) { return startTimer(window, setInterval, clearInterval, fn, ms); };
-  this.clearInterval = stopTimer.bind(this, window);
-  this.clearTimeout = stopTimer.bind(this, window);
-  this.__stopAllTimers = stopAllTimers.bind(this, window);
-  this.Image = function (width, height) {
-    var element = window._document.createElement("img");
-    element.width = width;
-    element.height = height;
-    return element;
-  };
-
-  this._virtualConsole = new VirtualConsole();
-
-  function wrapConsoleMethod(method) {
-    return function () {
-      var args = Array.prototype.slice.call(arguments);
-      window._virtualConsole.emit.apply(window._virtualConsole, [method].concat(args));
-    };
-  }
-
-  this.console = {
-    assert: wrapConsoleMethod("assert"),
-    clear: wrapConsoleMethod("clear"),
-    count: wrapConsoleMethod("count"),
-    debug: wrapConsoleMethod("debug"),
-    error: wrapConsoleMethod("error"),
-    group: wrapConsoleMethod("group"),
-    groupCollapse: wrapConsoleMethod("groupCollapse"),
-    groupEnd: wrapConsoleMethod("groupEnd"),
-    info: wrapConsoleMethod("info"),
-    log: wrapConsoleMethod("log"),
-    table: wrapConsoleMethod("table"),
-    time: wrapConsoleMethod("time"),
-    timeEnd: wrapConsoleMethod("timeEnd"),
-    trace: wrapConsoleMethod("trace"),
-    warn: wrapConsoleMethod("warn")
-  };
-
-  this.XMLHttpRequest = function () {
-    var xhr = new XMLHttpRequest();
-    var lastUrl = "";
-    xhr._open = xhr.open;
-    xhr.open = function (method, url, async, user, password) {
-      url = URL.resolve(window.document.URL, url);
-      lastUrl = url;
-      return xhr._open(method, url, async, user, password);
-    };
-    xhr._send = xhr.send;
-    xhr.send = function (data) {
-      if (window.document.cookie) {
-        var cookieDomain = window.document._cookieDomain;
-        var url = URL.parse(lastUrl);
-        var host = url.host.split(":")[0];
-        if (host.indexOf(cookieDomain, host.length - cookieDomain.length) !== -1) {
-          xhr.setDisableHeaderCheck(true);
-          xhr.setRequestHeader("cookie", window.document.cookie);
-          xhr.setDisableHeaderCheck(false);
-        }
-      }
-      return xhr._send(data);
-    };
-    return xhr;
-  };
-}
-
-Window.prototype = createFrom(dom || null, {
-  constructor: Window,
-  // This implements window.frames.length, since window.frames returns a
-  // self reference to the window object.  This value is incremented in the
-  // HTMLFrameElement init function (see: level2/html.js).
-  _length: 0,
-  get length() {
-    return this._length;
-  },
-  get document() {
-    return this._document;
-  },
-  get location() {
-    return this._document._location;
-  },
-  close: function () {
-    // Recursively close child frame windows, then ourselves.
-    var currentWindow = this;
-    (function windowCleaner(window) {
-      var i;
-      // We could call window.frames.length etc, but window.frames just points
-      // back to window.
-      if (window.length > 0) {
-        for (i = 0; i < window.length; i++) {
-          windowCleaner(window[i]);
-        }
-      }
-      // We"re already in our own window.close().
-      if (window !== currentWindow) {
-        window.close();
-      }
-    })(this);
-
-    if (this._document) {
-      if (this._document.body) {
-        this._document.body.innerHTML = "";
-      }
-
-      if (this._document.close) {
-        // We need to empty out the event listener array because
-        // document.close() causes "load" event to re-fire.
-        this._document._listeners = [];
-        this._document.close();
-      }
-      delete this._document;
-    }
-
-    stopAllTimers(currentWindow);
-    // Clean up the window"s execution context.
-    // dispose() is added by Contextify.
-    this.dispose();
-  },
-  getComputedStyle: function (node) {
-    var s = node.style,
-        cs = new CSSStyleDeclaration(),
-        forEach = Array.prototype.forEach;
-
-    function setPropertiesFromRule(rule) {
-      if (!rule.selectorText) {
-        return;
-      }
-
-      var selectors = rule.selectorText.split(cssSelectorSplitRE);
-      var matched = false;
-      selectors.forEach(function (selectorText) {
-        if (selectorText !== "" && selectorText !== "," && !matched && matchesDontThrow(node, selectorText)) {
-          matched = true;
-          forEach.call(rule.style, function (property) {
-            cs.setProperty(property, rule.style.getPropertyValue(property), rule.style.getPropertyPriority(property));
-          });
-        }
-      });
-    }
-
-    forEach.call(node.ownerDocument.styleSheets, function (sheet) {
-      forEach.call(sheet.cssRules, function (rule) {
-        if (rule.media) {
-          if (Array.prototype.indexOf.call(rule.media, "screen") !== -1) {
-            forEach.call(rule.cssRules, setPropertiesFromRule);
-          }
-        } else {
-          setPropertiesFromRule(rule);
-        }
-      });
-    });
-
-    forEach.call(s, function (property) {
-      cs.setProperty(property, s.getPropertyValue(property), s.getPropertyPriority(property));
-    });
-
-    return cs;
-  },
-
-  // TODO: all of the below data properties should be getters; right now they are shared between Window instances
-  // which is of course bad.
-  navigator: {
-    get userAgent() { return "Node.js (" + process.platform + "; U; rv:" + process.version + ")"; },
-    get appName() { return "Node.js jsDom"; },
-    get platform() { return process.platform; },
-    get appVersion() { return process.version; },
-    noUI: true,
-    get cookieEnabled() { return true; }
-  },
-
-  name: "nodejs",
-  innerWidth: 1024,
-  innerHeight: 768,
-  outerWidth: 1024,
-  outerHeight: 768,
-  pageXOffset: 0,
-  pageYOffset: 0,
-  screenX: 0,
-  screenY: 0,
-  screenLeft: 0,
-  screenTop: 0,
-  scrollX: 0,
-  scrollY: 0,
-  scrollTop: 0,
-  scrollLeft: 0,
-  alert: NOT_IMPLEMENTED("window.alert"),
-  blur: NOT_IMPLEMENTED("window.blur"),
-  confirm: NOT_IMPLEMENTED("window.confirm"),
-  createPopup: NOT_IMPLEMENTED("window.createPopup"),
-  focus: NOT_IMPLEMENTED("window.focus"),
-  moveBy: NOT_IMPLEMENTED("window.moveBy"),
-  moveTo: NOT_IMPLEMENTED("window.moveTo"),
-  open: NOT_IMPLEMENTED("window.open"),
-  print: NOT_IMPLEMENTED("window.print"),
-  prompt: NOT_IMPLEMENTED("window.prompt"),
-  resizeBy: NOT_IMPLEMENTED("window.resizeBy"),
-  resizeTo: NOT_IMPLEMENTED("window.resizeTo"),
-  scroll: NOT_IMPLEMENTED("window.scroll"),
-  scrollBy: NOT_IMPLEMENTED("window.scrollBy"),
-  scrollTo: NOT_IMPLEMENTED("window.scrollTo"),
-  screen: {
-    width: 0,
-    height: 0
-  },
-
-  // Note: these will not be necessary for newer Node.js versions, which have
-  // typed arrays in V8 and thus on every global object. (That is, in newer
-  // versions we"ll get `ArrayBuffer` just as automatically as we get
-  // `Array`.) But to support older versions, we explicitly set them here.
-  Int8Array: global.Int8Array,
-  Int16Array: global.Int16Array,
-  Int32Array: global.Int32Array,
-  Float32Array: global.Float32Array,
-  Float64Array: global.Float64Array,
-  Uint8Array: global.Uint8Array,
-  Uint8ClampedArray: global.Uint8ClampedArray,
-  Uint16Array: global.Uint16Array,
-  Uint32Array: global.Uint32Array,
-  ArrayBuffer: global.ArrayBuffer
-});
-
-module.exports = Window;
diff --git a/node_modules/jsdom/lib/jsdom/browser/documentAdapter.js b/node_modules/jsdom/lib/jsdom/browser/documentAdapter.js
deleted file mode 100644
index 7d66168..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/documentAdapter.js
+++ /dev/null
@@ -1,62 +0,0 @@
-//Tree traversing
-exports.getFirstChild = function (node) {
-  return node.childNodes[0];
-};
-
-exports.getChildNodes = function (node) {
-  return node.childNodes;
-};
-
-exports.getParentNode = function (node) {
-  return node.parentNode;
-};
-
-exports.getAttrList = function (node) {
-  return node.attributes;
-};
-
-//Node data
-exports.getTagName = function (element) {
-  return element.tagName.toLowerCase();
-};
-
-exports.getNamespaceURI = function (element) {
-  return element.namespaceURI || 'http://www.w3.org/1999/xhtml';
-};
-
-exports.getTextNodeContent = function (textNode) {
-  return textNode.nodeValue;
-};
-
-exports.getCommentNodeContent = function (commentNode) {
-  return commentNode.nodeValue;
-};
-
-exports.getDocumentTypeNodeName = function (doctypeNode) {
-  return doctypeNode.name;
-};
-
-exports.getDocumentTypeNodePublicId = function (doctypeNode) {
-  return doctypeNode.publicId || null;
-};
-
-exports.getDocumentTypeNodeSystemId = function (doctypeNode) {
-  return doctypeNode.systemId || null;
-};
-
-//Node types
-exports.isTextNode = function (node) {
-  return node.nodeName === '#text';
-};
-
-exports.isCommentNode = function (node) {
-  return node.nodeName === '#comment';
-};
-
-exports.isDocumentTypeNode = function (node) {
-  return node.nodeType === 10;
-};
-
-exports.isElementNode = function (node) {
-  return !!node.tagName;
-};
diff --git a/node_modules/jsdom/lib/jsdom/browser/documentfeatures.js b/node_modules/jsdom/lib/jsdom/browser/documentfeatures.js
deleted file mode 100644
index 2e562cb..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/documentfeatures.js
+++ /dev/null
@@ -1,52 +0,0 @@
-exports.availableDocumentFeatures = [
-  'FetchExternalResources',
-  'ProcessExternalResources',
-  'MutationEvents',
-  'SkipExternalResources'
-];
-
-exports.defaultDocumentFeatures = {
-  "FetchExternalResources": ['script', 'link'/*, 'img', 'css', 'frame'*/],
-  "ProcessExternalResources": ['script'/*, 'frame', 'iframe'*/],
-  "MutationEvents": '2.0',
-  "SkipExternalResources": false
-};
-
-exports.applyDocumentFeatures = function(doc, features) {
-  var i, maxFeatures = exports.availableDocumentFeatures.length,
-      defaultFeatures = exports.defaultDocumentFeatures,
-      j,
-      k,
-      featureName,
-      featureSource;
-
-  features = features || {};
-
-  for (i=0; i<maxFeatures; i++) {
-    featureName = exports.availableDocumentFeatures[i];
-    if (typeof features[featureName] !== 'undefined') {
-      featureSource = features[featureName];
-    // We have to check the lowercase version also because the Document feature
-    // methods convert everything to lowercase.
-    } else if (typeof features[featureName.toLowerCase()] !== 'undefined') {
-      featureSource = features[featureName.toLowerCase()];
-    } else if (defaultFeatures[featureName]) {
-      featureSource = defaultFeatures[featureName];
-    } else {
-      continue;
-    }
-
-    doc.implementation._removeFeature(featureName);
-
-    if (typeof featureSource !== 'undefined') {
-      if (featureSource instanceof Array) {
-        k = featureSource.length;
-        for (j=0; j<k; j++) {
-          doc.implementation._addFeature(featureName, featureSource[j]);
-        }
-      } else {
-        doc.implementation._addFeature(featureName, featureSource);
-      }
-    }
-  }
-};
diff --git a/node_modules/jsdom/lib/jsdom/browser/domtohtml.js b/node_modules/jsdom/lib/jsdom/browser/domtohtml.js
deleted file mode 100644
index 0c256c4..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/domtohtml.js
+++ /dev/null
@@ -1,24 +0,0 @@
-"use strict";
-
-var parse5 = require('parse5');
-var serializer = new parse5.TreeSerializer(require('./documentAdapter'));
-
-exports.domToHtml = function(dom) {
-  if (dom._toArray) {
-    // node list
-    dom = dom._toArray();
-  }
-  if (typeof dom.length !== "undefined") {
-    var ret = "";
-    for (var i = 0, len = dom.length; i < len; i++) {
-      ret += dom[i].nodeType === dom.DOCUMENT_NODE ?
-        serializer.serialize(dom[i]) :
-        serializer.serialize({ childNodes: [dom[i]] });
-    }
-    return ret;
-  } else {
-    return dom.nodeType === dom.DOCUMENT_NODE ?
-      serializer.serialize(dom) :
-      serializer.serialize({ childNodes: [dom] });
-  }
-};
diff --git a/node_modules/jsdom/lib/jsdom/browser/history.js b/node_modules/jsdom/lib/jsdom/browser/history.js
deleted file mode 100644
index 674b4ad..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/history.js
+++ /dev/null
@@ -1,94 +0,0 @@
-"use strict";
-var URL = require("url");
-var resolveHref = require("../utils").resolveHref;
-
-function StateEntry(data, title, url) {
-  this.data = data;
-  this.title = title;
-  this.url = url;
-}
-
-module.exports = History;
-
-function History(window) {
-  this._states = [new StateEntry(null, "", window.location._url.href)];
-  this._index = 0;
-  this._window = window;
-  this._location = window.location;
-}
-
-History.prototype = {
-  constructor: History,
-
-  get length() {
-    return this._states.length;
-  },
-
-  get state() {
-    var state = this._states[this._index];
-    return state ? state.data : null;
-  },
-
-  back: function () {
-    this.go(-1);
-  },
-
-  forward: function () {
-    this.go(1);
-  },
-
-  go: function (delta) {
-    if (typeof delta === "undefined" || delta === 0) {
-      this._location.reload();
-      return;
-    }
-
-    var newIndex = this._index + delta;
-
-    if (newIndex < 0 || newIndex >= this.length) {
-      return;
-    }
-
-    this._index = newIndex;
-
-    var state = this._states[newIndex];
-
-    this._applyState(state);
-    this._signalPopstate(state);
-  },
-
-  pushState: function (data, title, url) {
-    var state = new StateEntry(data, title, url);
-    if (this._index + 1 !== this._states.length) {
-      this._states = this._states.slice(0, this._index + 1);
-    }
-    this._states.push(state);
-    this._applyState(state);
-    this._index++;
-  },
-
-  replaceState: function (data, title, url) {
-    var state = new StateEntry(data, title, url);
-    this._states[this._index] = state;
-    this._applyState(state);
-  },
-
-  _applyState: function (state) {
-    this._location._url = URL.parse(resolveHref(this._location._url.href, state.url));
-  },
-
-  _signalPopstate: function(state) {
-    if (this._window.document) {
-      var ev = this._window.document.createEvent("HTMLEvents");
-      ev.initEvent("popstate", false, false);
-      ev.state = state.data;
-      process.nextTick(function () {
-        this._window.dispatchEvent(ev);
-      }.bind(this));
-    }
-  },
-
-  toString: function () {
-    return "[object History]";
-  }
-};
diff --git a/node_modules/jsdom/lib/jsdom/browser/htmltodom.js b/node_modules/jsdom/lib/jsdom/browser/htmltodom.js
deleted file mode 100644
index 88908dc..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/htmltodom.js
+++ /dev/null
@@ -1,231 +0,0 @@
-var parse5 = require('parse5');
-var htmlparser2 = require('htmlparser2');
-
-function HtmlToDom(parser, parsingMode) {
-  if (!parser) {
-    if (parsingMode === "xml") {
-      parser = htmlparser2;
-    } else {
-      parser = parse5;
-    }
-  }
-
-  if (parser.DefaultHandler || (parser.Parser && parser.TreeAdapters)) {
-
-    // Forgiving HTML parser
-
-    if (parser.DefaultHandler){
-      // fb55/htmlparser2
-
-      parser.ParseHtml = function(rawHtml) {
-        var handler = new parser.DefaultHandler();
-        // Check if document is XML
-        var isXML = parsingMode === "xml";
-        var parserInstance = new parser.Parser(handler, {
-          xmlMode: isXML,
-          lowerCaseTags: !isXML,
-          lowerCaseAttributeNames: !isXML,
-          decodeEntities: true
-        });
-
-        parserInstance.includeLocation = false;
-        parserInstance.parseComplete(rawHtml);
-        return handler.dom;
-      };
-    } else if (parser.Parser && parser.TreeAdapters) {
-      parser.ParseHtml = function (rawHtml) {
-        if (parsingMode === 'xml') {
-          throw new Error('Can\'t parse XML with parse5, please use htmlparser2 instead.');
-        }
-        var instance = new parser.Parser(parser.TreeAdapters.htmlparser2);
-        var dom = instance.parse(rawHtml);
-        return dom.children;
-      };
-    }
-
-    this.appendHtmlToElement = function(html, element) {
-
-      if (typeof html !== 'string') {
-        html +='';
-      }
-
-      var parsed = parser.ParseHtml(html);
-
-      for (var i = 0; i < parsed.length; i++) {
-        setChild(element, parsed[i]);
-      }
-
-      return element;
-    };
-    this.appendHtmlToDocument = this.appendHtmlToElement;
-
-    if (parser.Parser && parser.TreeAdapters) {
-      this.appendHtmlToElement = function (html, element) {
-
-        if (typeof html !== 'string') {
-          html += '';
-        }
-
-        var instance = new parser.Parser(parser.TreeAdapters.htmlparser2);
-        var parentElement = parser.TreeAdapters.htmlparser2.createElement(element.tagName.toLowerCase(), element.namespaceURI, []);
-        var dom = instance.parseFragment(html, parentElement);
-        var parsed = dom.children;
-
-        for (var i = 0; i < parsed.length; i++) {
-          setChild(element, parsed[i]);
-        }
-
-        return element;
-      };
-    }
-
-  } else if (parser.moduleName == 'HTML5') { /* HTML5 parser */
-    this.appendHtmlToElement = function(html, element) {
-
-      if (typeof html !== 'string') {
-        html += '';
-      }
-      if (html.length > 0) {
-        if (element.nodeType == 9) {
-          new parser.Parser({document: element}).parse(html);
-        }
-        else {
-          var p = new parser.Parser({document: element.ownerDocument});
-          p.parse_fragment(html, element);
-        }
-      }
-    };
-  } else {
-    this.appendHtmlToElement = function () {
-      console.log('');
-      console.log('###########################################################');
-      console.log('#  WARNING: No compatible HTML parser was given.');
-      console.log('#  Element.innerHTML setter support has been disabled');
-      console.log('#  Element.innerHTML getter support will still function');
-      console.log('###########################################################');
-      console.log('');
-    };
-  }
-};
-
-// utility function for forgiving parser
-function setChild(parent, node) {
-
-  var c, newNode, currentDocument = parent._ownerDocument || parent;
-
-  switch (node.type)
-  {
-    case 'tag':
-    case 'script':
-    case 'style':
-      try {
-        newNode = currentDocument._createElementNoTagNameValidation(node.name);
-        newNode._namespaceURI = node.namespace || "http://www.w3.org/1999/xhtml";
-        if (node.location) {
-          newNode.sourceLocation = node.location;
-          newNode.sourceLocation.file = parent.sourceLocation.file;
-        }
-      } catch (err) {
-        currentDocument.raise('error', 'invalid markup', {
-          exception: err,
-          node : node
-        });
-
-        return null;
-      }
-    break;
-
-    case 'root':
-        // If we are in <template> then implicitly create #document-fragment for it's content
-        if(parent.tagName === 'TEMPLATE' && parent._namespaceURI === 'http://www.w3.org/1999/xhtml') {
-            newNode = currentDocument.createDocumentFragment();
-            // Mark fragment as parser-created template content, so it will be accepted by appendChild()
-            newNode._templateContent = true;
-        }
-    break;
-
-    case 'text':
-      // HTML entities should already be decoded by the parser, so no need to decode them
-      newNode = currentDocument.createTextNode(node.data);
-    break;
-
-    case 'comment':
-      newNode = currentDocument.createComment(node.data);
-    break;
-
-    case 'directive':
-      if (node.name[0] === '?' && node.name.toLowerCase() !== '?xml') {
-        var data = node.data.slice(node.name.length + 1, -1);
-        newNode = currentDocument.createProcessingInstruction(node.name.substring(1), data);
-      } else if (node.name.toLowerCase() === '!doctype') {
-        newNode = parseDocType(currentDocument, '<' + node.data + '>');
-      }
-    break;
-
-    default:
-      return null;
-    break;
-  }
-
-  if (!newNode)
-    return null;
-
-  newNode._localName = node.name;
-
-  if (node.attribs) {
-    for (c in node.attribs) {
-      var prefix = node['x-attribsPrefix'] && node['x-attribsPrefix'][c] ? node['x-attribsPrefix'][c] + ':' : '';
-      // catchin errors here helps with improperly escaped attributes
-      // but properly fixing parent should (can only?) be done in the htmlparser itself
-      try {
-        newNode._setAttributeNoValidation(prefix + c, node.attribs[c]);
-        newNode.attributes[prefix + c]._namespaceURI = node['x-attribsNamespace'][c] || null;
-        newNode.attributes[prefix + c]._prefix = node['x-attribsPrefix'][c] || null;
-        newNode.attributes[prefix + c]._localName = c;
-      } catch(e2) { /* noop */ }
-    }
-  }
-
-  if (node.children) {
-    for (c = 0; c < node.children.length; c++) {
-      setChild(newNode, node.children[c]);
-    }
-  }
-
-  try{
-    return parent.appendChild(newNode);
-  }catch(err){
-    currentDocument.raise('error', err.message, {
-          exception: err,
-          node : node
-        });
-    return null;
-  }
-}
-
-var HTML5_DOCTYPE = /<!doctype html>/i;
-var PUBLIC_DOCTYPE = /<!doctype\s+([^\s]+)\s+public\s+"([^"]+)"\s+"([^"]+)"/i;
-var SYSTEM_DOCTYPE = /<!doctype\s+([^\s]+)\s+system\s+"([^"]+)"/i;
-
-function parseDocType(doc, html) {
-  if (HTML5_DOCTYPE.test(html)) {
-    return doc.implementation.createDocumentType("html", "", "");
-  }
-
-  var publicPieces = PUBLIC_DOCTYPE.exec(html);
-  if (publicPieces) {
-    return doc.implementation.createDocumentType(publicPieces[1], publicPieces[2], publicPieces[3]);
-  }
-
-  var systemPieces = SYSTEM_DOCTYPE.exec(html);
-  if (systemPieces) {
-    return doc.implementation.createDocumentType(systemPieces[1], systemPieces[2], "");
-  }
-
-  // Shouldn't get here (the parser shouldn't let us know about invalid doctypes), but our logic likely isn't
-  // real-world perfect, so let's fallback.
-  return doc.implementation.createDocumentType("html", "", "");
-}
-
-
-exports.HtmlToDom = HtmlToDom;
diff --git a/node_modules/jsdom/lib/jsdom/browser/index.js b/node_modules/jsdom/lib/jsdom/browser/index.js
deleted file mode 100644
index 0d44dc1..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/index.js
+++ /dev/null
@@ -1,85 +0,0 @@
-var HtmlToDom     = require('./htmltodom').HtmlToDom,
-    jsdom         = require('../../jsdom'),
-    defineGetter  = require('../utils').defineGetter,
-    defineSetter  = require('../utils').defineSetter,
-    Contextify    = require('contextify'),
-    Window        = require('./Window');
-
-function windowAugmentation(document) {
-  var window = createWindow(document);
-
-  if (document.addEventListener) {
-    if (document.readyState == 'complete') {
-      var ev = document.createEvent('HTMLEvents');
-      ev.initEvent('load', false, false);
-      process.nextTick(function () {
-        window.dispatchEvent(ev);
-      });
-    }
-    else {
-      document.addEventListener('load', function(ev) {
-        window.dispatchEvent(ev);
-      });
-    }
-  }
-
-  return window;
-};
-
-function createWindow(document) {
-  var window = new Window(document);
-
-  Contextify(window);
-
-  // We need to set up self references using Contextify's getGlobal() so that
-  // the global object identity is correct (window === this).
-  // See Contextify README for more info.
-  var windowGlobal = window.getGlobal();
-
-  // Set up the window as if it's a top level window.
-  // If it's not, then references will be corrected by frame/iframe code.
-  // Note: window.frames is maintained in the HTMLFrameElement init function.
-  window.window = window.frames
-                = window.self
-                = window.parent
-                = window.top = windowGlobal;
-
-  return window;
-};
-
-/**
- * Augments the given DOM by adding browser-specific properties and methods (BOM).
- * Returns the augmented DOM.
- */
-// TODO: this function is HORIBBLE. It modifies the *shared* `dom` variable with document-specific stuff.
-// We call it in `jsdom.jsdom`, i.e. per-document. The checks `if (dom._augment && ...)` just mean that it won't modify
-// the global twice *for the same options*. Bad stuff.
-//
-// None of the properties set here should be on `dom`, really.
-exports.browserAugmentation = function (dom, options) {
-  if (!options) {
-    options = {};
-  }
-
-  var parser = options.parser;
-
-  if (dom._augmented && dom._parser === parser && dom._parsingMode === options.parsingMode) {
-    return dom;
-  }
-
-  dom._parser = parser;
-  dom._parsingMode = options.parsingMode;
-  var htmltodom = new HtmlToDom(parser, options.parsingMode);
-  dom.Document.prototype._htmlToDom = htmltodom;
-  dom.Document.prototype._domImpl = dom.DOMImplementation;
-
-  defineGetter(dom.Document.prototype, 'parentWindow', function() {
-    if (!this._parentWindow) {
-      this.parentWindow = windowAugmentation(this);
-    }
-    return this._parentWindow;
-  });
-
-  dom._augmented = true;
-  return dom;
-};
diff --git a/node_modules/jsdom/lib/jsdom/browser/location.js b/node_modules/jsdom/lib/jsdom/browser/location.js
deleted file mode 100644
index 92ece8c..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/location.js
+++ /dev/null
@@ -1,103 +0,0 @@
-"use strict";
-
-var URL = require("url");
-var resolveHref = require("../utils").resolveHref;
-var NOT_IMPLEMENTED = require("./utils").NOT_IMPLEMENTED;
-
-module.exports = Location;
-
-function Location(urlString, document) {
-  this._url = URL.parse(urlString);
-  this._document = document;
-}
-
-Location.prototype = {
-  constructor: Location,
-  reload: function () {
-    NOT_IMPLEMENTED("location.reload", this._document)();
-  },
-  get protocol() { return this._url.protocol || ":"; },
-  get host() { return this._url.host || ""; },
-  get auth() { return this._url.auth; },
-  get hostname() { return this._url.hostname || ""; },
-  get origin() {
-    return ((this._url.protocol !== undefined && this._url.protocol !== null) ?
-              this._url.protocol + "//" :
-              this._url.protocol) +
-        this._url.host || "";
-  },
-  get port() { return this._url.port || ""; },
-  get pathname() { return this._url.pathname || ""; },
-  get href() { return this._url.href; },
-  get hash() { return this._url.hash || ""; },
-  get search() { return this._url.search || ""; },
-
-  set href(val) {
-    var oldUrl = this._url.href;
-    var oldProtocol = this._url.protocol;
-    var oldHost = this._url.host;
-    var oldPathname = this._url.pathname;
-    var oldHash = this._url.hash || "";
-
-    this._url = URL.parse(resolveHref(oldUrl, val));
-    var newUrl = this._url.href;
-    var newProtocol = this._url.protocol;
-    var newHost = this._url.host;
-    var newPathname = this._url.pathname;
-    var newHash = this._url.hash || "";
-
-    if (oldProtocol === newProtocol && oldHost === newHost && oldPathname === newPathname && oldHash !== newHash) {
-      this._signalHashChange(oldUrl, newUrl);
-    } else {
-      NOT_IMPLEMENTED("location.href (no reload)", this._document)();
-    }
-  },
-
-  set hash(val) {
-    var oldUrl = this._url.href;
-    var oldHash = this._url.hash || "";
-
-    if (val.lastIndexOf("#", 0) !== 0) {
-      val = "#" + val;
-    }
-
-    this._url = URL.parse(resolveHref(oldUrl, val));
-    var newUrl = this._url.href;
-    var newHash = this._url.hash || "";
-
-    if (oldHash !== newHash) {
-      this._signalHashChange(oldUrl, newUrl);
-    }
-  },
-
-  set search(val) {
-    var oldUrl = this._url.href;
-    var oldHash = this._url.hash || "";
-    if (val.length) {
-      if (val.lastIndexOf("?", 0) !== 0) {
-        val = "?" + val;
-      }
-      this._url = URL.parse(resolveHref(oldUrl, val + oldHash));
-    } else {
-      this._url = URL.parse(oldUrl.replace(/\?([^#]+)/, ""));
-    }
-  },
-
-  replace: function (val) {
-    this.href = val;
-  },
-
-  toString: function () {
-    return this._url.href;
-  },
-
-  _signalHashChange: function (oldUrl, newUrl) {
-    var ev = this._document.createEvent("HTMLEvents");
-    ev.initEvent("hashchange", false, false);
-    ev.oldUrl = oldUrl;
-    ev.newUrl = newUrl;
-    process.nextTick(function () {
-      this._document.parentWindow.dispatchEvent(ev);
-    }.bind(this));
-  }
-};
diff --git a/node_modules/jsdom/lib/jsdom/browser/utils.js b/node_modules/jsdom/lib/jsdom/browser/utils.js
deleted file mode 100644
index 87e952e..0000000
--- a/node_modules/jsdom/lib/jsdom/browser/utils.js
+++ /dev/null
@@ -1,15 +0,0 @@
-"use strict";
-
-exports.NOT_IMPLEMENTED = function (nameForErrorMessage, target) {
-  return function () {
-    if (target === undefined) {
-      target = this;
-    }
-
-    if (target && target.raise) {
-      target.raise("error", "NOT_IMPLEMENTED: " + nameForErrorMessage);
-    } else if (typeof console !== "undefined" && console.log) {
-      console.log(new Error("Called NOT_IMPLEMENTED without an element to raise on: " + nameForErrorMessage));
-    }
-  };
-};
diff --git a/node_modules/jsdom/lib/jsdom/contextify-shim.js b/node_modules/jsdom/lib/jsdom/contextify-shim.js
deleted file mode 100644
index 0bf22a9..0000000
--- a/node_modules/jsdom/lib/jsdom/contextify-shim.js
+++ /dev/null
@@ -1,53 +0,0 @@
-"use strict";
-
-var acorn = require("acorn");
-var findGlobals = require("acorn-globals");
-var escodegen = require("escodegen");
-
-module.exports = function (o) {
-  o.getGlobal = function () {
-    return o;
-  };
-
-  o.run = function (code, filename) {
-    var comments = [], tokens = [];
-    var ast = acorn.parse(code, {
-      ecmaVersion: 6,
-      allowReturnOutsideFunction: true,
-      ranges: true,
-      // collect comments in Esprima's format 
-      onComment: comments,
-      // collect token ranges 
-      onToken: tokens
-    });
-
-    // make sure we keep comments
-    escodegen.attachComments(ast, comments, tokens);
-
-    var globals = findGlobals(ast);
-    for (var i = 0; i < globals.length; ++i) {
-      if (globals[i].name === "window") {
-        continue;
-      }
-
-      var nodes = globals[i].nodes;
-      for (var j = 0; j < nodes.length; ++j) {
-        var type = nodes[j].type;
-        var name = nodes[j].name;
-        nodes[j].type = "MemberExpression";
-        nodes[j].property = {
-          name: name,
-          type: type
-        };
-        nodes[j].computed = false;
-        nodes[j].object = {
-          name: "window",
-          type: "Identifier"
-        };
-      }
-    }
-
-    code = escodegen.generate(ast, { comment: true });
-    new Function("window", code + "\n//# sourceURL=" + filename).bind(o)(o); // jshint ignore:line
-  };
-};
diff --git a/node_modules/jsdom/lib/jsdom/level1/core.js b/node_modules/jsdom/lib/jsdom/level1/core.js
deleted file mode 100644
index 26c8484..0000000
--- a/node_modules/jsdom/lib/jsdom/level1/core.js
+++ /dev/null
@@ -1,1794 +0,0 @@
-/*
-  ServerJS Javascript DOM Level 1
-*/
-var inheritFrom = require("../utils").inheritFrom;
-var domToHtml = require("../browser/domtohtml").domToHtml;
-var defineGetter = require("../utils").defineGetter;
-var memoizeQuery = require("../utils").memoizeQuery;
-var validateName = require('../living/helpers/validate-names').name;
-var Location = require("../browser/location");
-
-// utility functions
-var attachId = function(id,elm,doc) {
-  if (id && elm && doc) {
-    if (!doc._ids[id]) {
-      doc._ids[id] = [];
-    }
-    doc._ids[id].push(elm);
-  }
-};
-var detachId = function(id,elm,doc) {
-  var elms, i;
-  if (id && elm && doc) {
-    if (doc._ids && doc._ids[id]) {
-      elms = doc._ids[id];
-      for (i=0;i<elms.length;i++) {
-        if (elms[i] === elm) {
-          elms.splice(i,1);
-          i--;
-        }
-      }
-      if (elms.length === 0) {
-        delete doc._ids[id];
-      }
-    }
-  }
-};
-
-function setInnerHTML(dom, node, html) {
-  //Clear the children first:
-  var child;
-  while ((child = node._childNodes[0])) {
-    node.removeChild(child);
-  }
-
-  var isDoc = node.nodeName === '#document';
-  if (html !== "" && html != null) {
-    if (isDoc) {
-      dom._htmlToDom.appendHtmlToDocument(html, node);
-    } else {
-      dom._htmlToDom.appendHtmlToElement(html, node);
-    }
-  }
-}
-
-// TODO: move all of these to utils.js. Right now they are exposed on window, which is bizarre.
-var core = module.exports = {
-  mapper: function(parent, filter, recursive) {
-    return function() {
-      return core.mapDOMNodes(parent, recursive !== false, filter);
-    };
-  },
-
-  // Returns Array
-  mapDOMNodes : function(parent, recursive, callback) {
-    function visit(parent, result) {
-      return parent._childNodes.reduce(reducer, result);
-    }
-
-    function reducer(array, child) {
-      if (callback(child)) {
-        array.push(child);
-      }
-      if (recursive && child._childNodes) {
-        visit(child, array);
-      }
-      return array;
-    }
-
-    return visit(parent, []);
-  },
-
-  visitTree: function(root, callback) {
-    var cur = root; // TODO: Unroll this.
-
-    function visit(el) {
-      if (el) {
-        callback(el);
-        if (el._childNodes) {
-          var i        = 0,
-              children = el._childNodes,
-              l        = children.length;
-
-          for (i; i<l; i++) {
-            visit(children[i]);
-          }
-        }
-      }
-    }
-    visit(root);
-  },
-
-  markTreeReadonly: function(node) {
-    function markLevel(el) {
-      el._readonly = true;
-      // also mark attributes and their children read-only
-      if (el.attributes) {
-        var attributes = el.attributes, l = attributes.length, i=0;
-        attributes._readonly = true;
-
-        for (i; i<l; i++) {
-          core.visitTree(attributes[i], markLevel);
-        }
-      }
-    }
-
-    core.visitTree(node, markLevel);
-  }
-};
-
-// ExceptionCode
-var INDEX_SIZE_ERR              = core.INDEX_SIZE_ERR              = 1,
-    DOMSTRING_SIZE_ERR          = core.DOMSTRING_SIZE_ERR          = 2,
-    HIERARCHY_REQUEST_ERR       = core.HIERARCHY_REQUEST_ERR       = 3,
-    WRONG_DOCUMENT_ERR          = core.WRONG_DOCUMENT_ERR          = 4,
-    INVALID_CHARACTER_ERR       = core.INVALID_CHARACTER_ERR       = 5,
-    NO_DATA_ALLOWED_ERR         = core.NO_DATA_ALLOWED_ERR         = 6,
-    NO_MODIFICATION_ALLOWED_ERR = core.NO_MODIFICATION_ALLOWED_ERR = 7,
-    NOT_FOUND_ERR               = core.NOT_FOUND_ERR               = 8,
-    NOT_SUPPORTED_ERR           = core.NOT_SUPPORTED_ERR           = 9,
-    INUSE_ATTRIBUTE_ERR         = core.INUSE_ATTRIBUTE_ERR         = 10,
-    INVALID_STATE_ERR           = core.INVALID_STATE_ERR           = 11,
-    SYNTAX_ERR                  = core.SYNTAX_ERR                  = 12,
-    INVALID_MODIFICATION_ERR    = core.INVALID_MODIFICATION_ERR    = 13,
-    NAMESPACE_ERR               = core.NAMESPACE_ERR               = 14,
-    INVALID_ACCESS_ERR          = core.INVALID_ACCESS_ERR          = 15,
-// Node Types
-    ELEMENT_NODE                = 1,
-    ATTRIBUTE_NODE              = 2,
-    TEXT_NODE                   = 3,
-    CDATA_SECTION_NODE          = 4,
-    ENTITY_REFERENCE_NODE       = 5,
-    ENTITY_NODE                 = 6,
-    PROCESSING_INSTRUCTION_NODE = 7,
-    COMMENT_NODE                = 8,
-    DOCUMENT_NODE               = 9,
-    DOCUMENT_TYPE_NODE          = 10,
-    DOCUMENT_FRAGMENT_NODE      = 11,
-    NOTATION_NODE               = 12;
-
-var messages = core.exceptionMessages = { };
-messages[INDEX_SIZE_ERR]              = "Index size error";
-messages[DOMSTRING_SIZE_ERR]          = "DOMString size error";
-messages[HIERARCHY_REQUEST_ERR]       = "Hierarchy request error";
-messages[WRONG_DOCUMENT_ERR]          = "Wrong document";
-messages[INVALID_CHARACTER_ERR]       = "Invalid character";
-messages[NO_DATA_ALLOWED_ERR]         = "No data allowed";
-messages[NO_MODIFICATION_ALLOWED_ERR] = "No modification allowed";
-messages[NOT_FOUND_ERR]               = "Not found";
-messages[NOT_SUPPORTED_ERR]           = "Not supported";
-messages[INUSE_ATTRIBUTE_ERR]         = "Attribute in use";
-messages[NAMESPACE_ERR]               = "Invalid namespace";
-
-core.DOMException = function DOMException(code, message) {
-  Error.call(this, core.exceptionMessages[code]);
-  this.message = core.exceptionMessages[code];
-  this.code = code;
-
-  if (message) {
-    this.message = this.message + ": " + message;
-  }
-
-  if (Error.captureStackTrace) {
-
-    Error.captureStackTrace(this, DOMException);
-  }
-};
-
-core.DOMException.INDEX_SIZE_ERR              = INDEX_SIZE_ERR;
-core.DOMException.DOMSTRING_SIZE_ERR          = DOMSTRING_SIZE_ERR;
-core.DOMException.HIERARCHY_REQUEST_ERR       = HIERARCHY_REQUEST_ERR;
-core.DOMException.WRONG_DOCUMENT_ERR          = WRONG_DOCUMENT_ERR;
-core.DOMException.INVALID_CHARACTER_ERR       = INVALID_CHARACTER_ERR;
-core.DOMException.NO_DATA_ALLOWED_ERR         = NO_DATA_ALLOWED_ERR;
-core.DOMException.NO_MODIFICATION_ALLOWED_ERR = NO_MODIFICATION_ALLOWED_ERR;
-core.DOMException.NOT_FOUND_ERR               = NOT_FOUND_ERR;
-core.DOMException.NOT_SUPPORTED_ERR           = NOT_SUPPORTED_ERR;
-core.DOMException.INUSE_ATTRIBUTE_ERR         = INUSE_ATTRIBUTE_ERR;
-core.DOMException.INVALID_STATE_ERR           = INVALID_STATE_ERR;
-core.DOMException.SYNTAX_ERR                  = SYNTAX_ERR;
-core.DOMException.INVALID_MODIFICATION_ERR    = INVALID_MODIFICATION_ERR;
-core.DOMException.NAMESPACE_ERR               = NAMESPACE_ERR;
-core.DOMException.INVALID_ACCESS_ERR          = INVALID_ACCESS_ERR;
-
-inheritFrom(Error, core.DOMException, {
-  name: "DOMException",
-  INDEX_SIZE_ERR              : INDEX_SIZE_ERR,
-  DOMSTRING_SIZE_ERR          : DOMSTRING_SIZE_ERR,
-  HIERARCHY_REQUEST_ERR       : HIERARCHY_REQUEST_ERR,
-  WRONG_DOCUMENT_ERR          : WRONG_DOCUMENT_ERR,
-  INVALID_CHARACTER_ERR       : INVALID_CHARACTER_ERR,
-  NO_DATA_ALLOWED_ERR         : NO_DATA_ALLOWED_ERR,
-  NO_MODIFICATION_ALLOWED_ERR : NO_MODIFICATION_ALLOWED_ERR,
-  NOT_FOUND_ERR               : NOT_FOUND_ERR,
-  NOT_SUPPORTED_ERR           : NOT_SUPPORTED_ERR,
-  INUSE_ATTRIBUTE_ERR         : INUSE_ATTRIBUTE_ERR,
-  INVALID_STATE_ERR           : INVALID_STATE_ERR,
-  SYNTAX_ERR                  : SYNTAX_ERR,
-  INVALID_MODIFICATION_ERR    : INVALID_MODIFICATION_ERR,
-  NAMESPACE_ERR               : NAMESPACE_ERR,
-  INVALID_ACCESS_ERR          : INVALID_ACCESS_ERR
-});
-
-core.NodeList = function NodeList(element, query) {
-  if (!query) {
-    // Non-live NodeList
-    if (Array.isArray(element)) {
-      Array.prototype.push.apply(this, element);
-    }
-    Object.defineProperties(this, {
-      _length: {value: element ? element.length : 0, writable:true}
-    });
-  } else {
-    Object.defineProperties(this, {
-      _element: {value: element},
-      _query: {value: query},
-      _snapshot: {writable: true},
-      _length: {value: 0, writable: true},
-      _version: {value: -1, writable: true}
-    });
-    this._update();
-  }
-};
-
-function lengthFromProperties(arrayLike) {
-  var max = -1;
-  var keys = Object.keys(arrayLike);
-  var highestKeyIndex = keys.length - 1;
-
-  // abuses a v8 implementation detail for a very fast case
-  // (if this implementation detail changes, this method will still
-  //  return correct results)
-  if (highestKeyIndex == keys[highestKeyIndex]) { // not ===
-    return keys.length;
-  }
-
-  for (var i = highestKeyIndex; i >= 0 ; --i) {
-    var asNumber = + keys[i];
-
-    if (!isNaN(asNumber) && asNumber > max) {
-      max = asNumber;
-    }
-  }
-  return max + 1;
-}
-core.NodeList.prototype = {
-  _update: function() {
-    var i;
-
-    if (!this._element) {
-      this._length = lengthFromProperties(this);
-    } else {
-      if (this._version < this._element._version) {
-        var nodes = this._snapshot = this._query();
-        this._resetTo(nodes);
-        this._version = this._element._version;
-      }
-    }
-  },
-  _resetTo: function(array) {
-    var startingLength = lengthFromProperties(this);
-    for (var i = 0; i < startingLength; ++i) {
-      delete this[i];
-    }
-
-    for (var j = 0; j < array.length; ++j) {
-      this[j] = array[j];
-    }
-    this._length = array.length;
-  },
-  _toArray: function() {
-    if (this._element) {
-      this._update();
-      return this._snapshot;
-    }
-
-    return Array.prototype.slice.call(this);
-  },
-  get length() {
-    this._update();
-    return this._length || 0;
-  },
-  set length(length) {
-    return this._length;
-  },
-  item: function(index) {
-    this._update();
-    return this[index] || null;
-  },
-  toString: function() {
-    return '[ jsdom NodeList ]: contains ' + this.length + ' items';
-  }
-};
-Object.defineProperty(core.NodeList.prototype, 'constructor', {
-  value: core.NodeList,
-  writable: true,
-  configurable: true
-});
-
-core.DOMImplementation = function DOMImplementation(document, /* Object */ features) {
-  this._ownerDocument = document;
-  this._features = {};
-
-  if (features) {
-    for (var feature in features) {
-      if (features.hasOwnProperty(feature)) {
-        this._addFeature(feature.toLowerCase(), features[feature]);
-      }
-    }
-  }
-};
-
-core.DOMImplementation.prototype = {
-  // All of these are legacy, left because jsdom uses them internally :(. jsdom confused the idea of browser features
-  // and jsdom features
-  _removeFeature : function(feature, version) {
-    feature = feature.toLowerCase();
-    if (this._features[feature]) {
-      if (version) {
-        var j        = 0,
-            versions = this._features[feature],
-            l        = versions.length;
-
-        for (j; j<l; j++) {
-          if (versions[j] === version) {
-            versions.splice(j,1);
-            return;
-          }
-        }
-      } else {
-        delete this._features[feature];
-      }
-    }
-  },
-
-  _addFeature: function(feature, version) {
-    feature = feature.toLowerCase();
-
-    if (version) {
-
-      if (!this._features[feature]) {
-        this._features[feature] = [];
-      }
-
-      if (version instanceof Array) {
-        Array.prototype.push.apply(this._features[feature], version);
-      } else {
-        this._features[feature].push(version);
-      }
-    }
-  },
-
-  // The real hasFeature is in living/dom-implementation.js, and returns true always.
-  // This one is used internally
-  _hasFeature: function(/* string */ feature, /* string */ version) {
-    feature = (feature) ? feature.toLowerCase() : '';
-    var versions = (this._features[feature]) ?
-                    this._features[feature]  :
-                    false;
-
-    if (!version && versions.length && versions.length > 0) {
-      return true;
-    } else if (typeof versions === 'string') {
-      return versions === version;
-    } else if (versions.indexOf && versions.length > 0) {
-      for (var i = 0; i < versions.length; i++) {
-        var found = versions[i] instanceof RegExp ?
-          versions[i].test(version) :
-          versions[i] === version;
-        if (found) { return true; }
-      }
-      return false;
-    } else {
-      return false;
-    }
-  }
-};
-
-
-var attrCopy = function(src, dest, fn) {
-  if (src.attributes) {
-    var attrs = src.attributes, i, l = attrs.length, attr, copied;
-    for (i=0;i<l;i++) {
-      attr = attrs[i];
-      // skip over default attributes
-      if (!attr.specified) {
-        continue;
-      }
-      // TODO: consider duplicating this code and moving it into level2/core
-      if (attr.namespaceURI) {
-        dest.setAttributeNS(attr.namespaceURI,
-                                     attr.name,
-                                     attr.value);
-        var localName = attr.name.split(':').pop();
-        copied = dest.getAttributeNodeNS(attr.namespaceURI, localName);
-      } else {
-        dest.setAttribute(attr.name, attr.value);
-        copied = dest.getAttributeNode(attr.name);
-      }
-      if (typeof fn == "function") {
-        fn(attr, copied);
-      }
-
-    }
-  }
-  return dest;
-};
-
-core.Node = function Node(ownerDocument) {
-  this._childNodes = [];
-  this._childNodesList = null;
-  this._ownerDocument = ownerDocument;
-  this._attributes = new AttributeList(ownerDocument, this);
-  this._childrenList = null;
-  this._version = 0;
-  this._parentNode = null;
-  this._memoizedQueries = {};
-  this._readonly = false;
-};
-
-core.Node.ELEMENT_NODE                = ELEMENT_NODE;
-core.Node.ATTRIBUTE_NODE              = ATTRIBUTE_NODE;
-core.Node.TEXT_NODE                   = TEXT_NODE;
-core.Node.CDATA_SECTION_NODE          = CDATA_SECTION_NODE;
-core.Node.ENTITY_REFERENCE_NODE       = ENTITY_REFERENCE_NODE;
-core.Node.ENTITY_NODE                 = ENTITY_NODE;
-core.Node.PROCESSING_INSTRUCTION_NODE = PROCESSING_INSTRUCTION_NODE;
-core.Node.COMMENT_NODE                = COMMENT_NODE;
-core.Node.DOCUMENT_NODE               = DOCUMENT_NODE;
-core.Node.DOCUMENT_TYPE_NODE          = DOCUMENT_TYPE_NODE;
-core.Node.DOCUMENT_FRAGMENT_NODE      = DOCUMENT_FRAGMENT_NODE;
-core.Node.NOTATION_NODE               = NOTATION_NODE;
-
-core.Node.prototype = {
-  ELEMENT_NODE                : ELEMENT_NODE,
-  ATTRIBUTE_NODE              : ATTRIBUTE_NODE,
-  TEXT_NODE                   : TEXT_NODE,
-  CDATA_SECTION_NODE          : CDATA_SECTION_NODE,
-  ENTITY_REFERENCE_NODE       : ENTITY_REFERENCE_NODE,
-  ENTITY_NODE                 : ENTITY_NODE,
-  PROCESSING_INSTRUCTION_NODE : PROCESSING_INSTRUCTION_NODE,
-  COMMENT_NODE                : COMMENT_NODE,
-  DOCUMENT_NODE               : DOCUMENT_NODE,
-  DOCUMENT_TYPE_NODE          : DOCUMENT_TYPE_NODE,
-  DOCUMENT_FRAGMENT_NODE      : DOCUMENT_FRAGMENT_NODE,
-  NOTATION_NODE               : NOTATION_NODE,
-
-  get children() {
-    if (!this._childrenList) {
-      var self = this;
-      this._childrenList = new core.NodeList(this, function() {
-        return self._childNodes.filter(function(node) {
-          return node.tagName;
-        });
-      });
-    }
-    this._childrenList._update();
-    return this._childrenList;
-  },
-  get nodeValue() {
-    if (this.nodeType === core.Node.TEXT_NODE ||
-        this.nodeType === core.Node.COMMENT_NODE ||
-        this.nodeType === core.Node.PROCESSING_INSTRUCTION_NODE) {
-      return this._data;
-    }
-
-    return null;
-  },
-  set nodeValue(value) {
-    if (this.nodeType === core.Node.TEXT_NODE ||
-        this.nodeType === core.Node.COMMENT_NODE ||
-        this.nodeType === core.Node.PROCESSING_INSTRUCTION_NODE) {
-      this.replaceData(0, this.length, value);
-    }
-  },
-  get parentNode() { return this._parentNode;},
-
-  get nodeName() {
-    switch (this.nodeType) {
-      case ELEMENT_NODE:
-        return this.tagName;
-      case TEXT_NODE:
-        return "#text";
-      case PROCESSING_INSTRUCTION_NODE:
-        return this.target;
-      case COMMENT_NODE:
-        return "#comment";
-      case DOCUMENT_NODE:
-        return "#document";
-      case DOCUMENT_TYPE_NODE:
-        return this.name;
-      case DOCUMENT_FRAGMENT_NODE:
-        return "#document-fragment";
-      case ATTRIBUTE_NODE:
-        // TODO: remove this; attributes should not be nodes and should not have a nodeName property
-        // Removing it breaks some legit-seeming xpath tests :-/
-        return this.name;
-    }
-  },
-  set nodeName(unused) { throw new core.DOMException();},
-  get firstChild() {
-    return this._childNodes.length > 0 ? this._childNodes[0] : null;
-  },
-  get ownerDocument() { return this._ownerDocument;},
-  get readonly() { return this._readonly;},
-
-  get lastChild() {
-    var len = this._childNodes.length;
-    return len > 0 ? this._childNodes[len -1] : null;
-  },
-
-  get childNodes() {
-    if (!this._childNodesList) {
-      var self = this;
-      this._childNodesList = new core.NodeList(this, function() {
-        return self._childNodes.slice();
-      });
-    }
-    this._childNodesList._update();
-    return this._childNodesList;
-  },
-  set childNodes(unused) { throw new core.DOMException();},
-
-  _indexOf: function(/*Node*/ child) {
-    return this._childNodes.indexOf(child);
-  },
-
-  get nextSibling() {
-    // find this node's index in the parentNode, add one and call it a day
-    if (!this._parentNode || !this._parentNode._indexOf) {
-      return null;
-    }
-
-    var index = this._parentNode._indexOf(this);
-
-    if (index == -1 || index+1 >= this._parentNode._childNodes.length) {
-      return null;
-    }
-
-    return this._parentNode._childNodes[index+1] || null;
-  },
-  set nextSibling(unused) { throw new core.DOMException();},
-
-  get previousSibling() {
-    if (!this._parentNode || !this._parentNode._indexOf) {
-      return null;
-    }
-
-    var index = this._parentNode._indexOf(this);
-
-    if (index == -1 || index-1 < 0) {
-      return null;
-    }
-
-    return this._parentNode._childNodes[index-1] || null;
-  },
-  set previousSibling(unused) { throw new core.DOMException();},
-
-  /* returns Node */
-  insertBefore :  function(/* Node */ newChild, /* Node*/ refChild) {
-    if (this._readonly === true) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR, 'Attempting to modify a read-only node');
-    }
-
-    // Adopt unowned children, for weird nodes like DocumentType
-    if (!newChild._ownerDocument) newChild._ownerDocument = this._ownerDocument;
-
-    // TODO - if (!newChild) then?
-    if (!(this instanceof core.Document) && newChild._ownerDocument !== this._ownerDocument) {
-      throw new core.DOMException(WRONG_DOCUMENT_ERR);
-    }
-
-    if (newChild.nodeType && newChild.nodeType === ATTRIBUTE_NODE) {
-      throw new core.DOMException(HIERARCHY_REQUEST_ERR);
-    }
-
-    // search for parents matching the newChild
-    var current = this;
-    do {
-      if (current === newChild) {
-        throw new core.DOMException(HIERARCHY_REQUEST_ERR);
-      }
-    } while((current = current._parentNode));
-
-    // fragments are merged into the element (except parser-created fragments in <template>)
-    if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE && !newChild._templateContent) {
-      var tmpNode, i = newChild._childNodes.length;
-      while (i-- > 0) {
-        tmpNode = newChild.removeChild(newChild.firstChild);
-        this.insertBefore(tmpNode, refChild);
-      }
-    } else if (newChild === refChild) {
-      return newChild;
-    } else {
-      // if the newChild is already in the tree elsewhere, remove it first
-      if (newChild._parentNode) {
-        newChild._parentNode.removeChild(newChild);
-      }
-
-      if (refChild == null) {
-        this._childNodes.push(newChild);
-      } else {
-        var refChildIndex = this._indexOf(refChild);
-        if (refChildIndex == -1) {
-          throw new core.DOMException(NOT_FOUND_ERR);
-        }
-        this._childNodes.splice(refChildIndex, 0, newChild);
-      }
-
-      newChild._parentNode = this;
-      if (this._attached && newChild._attach) {
-        newChild._attach();
-      }
-
-      this._modified();
-      this._descendantAdded(this, newChild);
-    }
-
-    return newChild;
-  }, // raises(DOMException);
-
-  _modified: function() {
-    this._version++;
-    if (this._ownerDocument) {
-      this._ownerDocument._version++;
-    }
-
-    if (this._childrenList) {
-      this._childrenList._update();
-    }
-    this._clearMemoizedQueries()
-  },
-
-  _clearMemoizedQueries: function() {
-    this._memoizedQueries = {};
-    if (this._parentNode && this._parentNode !== this) {
-      this._parentNode._clearMemoizedQueries();
-    }
-  },
-
-  _descendantRemoved: function(parent, child) {
-    if (this._parentNode && this._parentNode !== this) {
-      this._parentNode._descendantRemoved(parent, child);
-    }
-  },
-
-  _descendantAdded: function(parent, child) {
-    if (this._parentNode && this._parentNode !== this) {
-      this._parentNode._descendantAdded(parent, child);
-    }
-  },
-
-  _attrModified: function(name, value, oldValue) {
-    if (name == 'id' && this._attached) {
-      var doc = this._ownerDocument;
-      detachId(oldValue,this,doc);
-      attachId(value,this,doc);
-    }
-
-    // Check for inline event handlers.
-    // We can't set these like other attributes then look it up in
-    // dispatchEvent() because that would create 2 'traditional' event handlers
-    // in the case where there's an inline event handler attribute, plus one
-    // set using element.on* in a script.
-    //
-    // @see http://www.w3.org/TR/2011/WD-html5-20110405/webappapis.html#event-handler-content-attributes
-    if ((name.length > 2) && (name[0] == 'o') && (name[1] == 'n')) {
-        if (value) {
-          var self = this;
-          // Check whether we're the window. This can happen because inline
-          // handlers on the body are proxied to the window.
-          var w = (typeof self.run !== 'undefined') ? self : self._ownerDocument.parentWindow;
-          self[name] = function (event) {
-              // The handler code probably refers to functions declared in the
-              // window context, so we need to call run().
-
-              // Use awesome hacks to get the correct `this` context for the
-              // inline event handler. This would only be necessary if we're an
-              // element, but for the sake of simplicity we also do it on window.
-
-              // Also set event variable and support `return false`.
-              w.__tempContextForInlineEventHandler = self;
-              w.__tempEvent = event;
-              w.run("if ((function (event) {" + value + "}).call(" +
-                "window.__tempContextForInlineEventHandler, window.__tempEvent) === false) {" +
-                "window.__tempEvent.preventDefault()}");
-              delete w.__tempContextForInlineEventHandler;
-              delete w.__tempEvent;
-          };
-        } else {
-          this[name] = null;
-        }
-    }
-  },
-
-  /* returns Node */
-  replaceChild : function(/* Node */ newChild, /* Node */ oldChild){
-    this.insertBefore(newChild, oldChild);
-    return this.removeChild(oldChild);
-  }, //raises(DOMException);
-
-  /* returns void */
-  _attach : function() {
-    this._attached = true;
-    if (this.id) {
-      attachId(this.id,this,this._ownerDocument);
-    }
-    for (var i = 0, len = this._childNodes.length; i < len; i++) {
-      if (this._childNodes[i]._attach) {
-        this._childNodes[i]._attach();
-      }
-    }
-  },
-  /* returns void */
-  _detach : function() {
-    var i, elms;
-    this._attached = false;
-    if (this.id) {
-      detachId(this.id,this,this._ownerDocument);
-    }
-    for (var i = 0, len = this._childNodes.length; i < len; i++) {
-      this._childNodes[i]._detach();
-    }
-  },
-
-  /* returns Node */
-  removeChild : function(/* Node */ oldChild){
-    if (this._readonly === true) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR);
-    }
-
-    // TODO - if (!oldChild) then?
-
-    // Use lastIndexOf so that removing all the children by
-    // going backwards through childNodes is fast
-    // (because of splice)
-    var oldChildIndex = this._childNodes.lastIndexOf(oldChild);
-    if (oldChildIndex == -1) {
-      throw new core.DOMException(NOT_FOUND_ERR);
-    }
-
-    this._childNodes.splice(oldChildIndex, 1);
-    oldChild._parentNode = null;
-    this._modified();
-    oldChild._detach();
-    this._descendantRemoved(this, oldChild);
-    return oldChild;
-  }, // raises(DOMException);
-
-  /* returns Node */
-  appendChild : function(/* Node */ newChild) {
-    return this.insertBefore(newChild, null);
-  }, // raises(DOMException);
-
-  /* returns boolean */
-  hasChildNodes : function() {
-    return this._childNodes.length > 0;
-  },
-
-  /* returns Node */
-  cloneNode : function(/* bool */ deep, fn) {
-
-    var object = null;
-    switch (this.nodeType) {
-
-      case this.ELEMENT_NODE:
-        object = attrCopy(this,this._ownerDocument.createElementNS(this.namespaceURI, this.nodeName), fn);
-        // Using this.nodeName isn't always exact because of uppercasing-related stuff
-        object._prefix = this._prefix;
-        object._localName = this._localName;
-      break;
-
-      case this.TEXT_NODE:
-        object = attrCopy(this,this._ownerDocument.createTextNode(this.tagName));
-        object.nodeValue = this.nodeValue;
-      break;
-      case this.ATTRIBUTE_NODE:
-        object = this._ownerDocument.createAttribute(this.name);
-      break;
-      break;
-      case this.PROCESSING_INSTRUCTION_NODE:
-        var pi = this._ownerDocument.createProcessingInstruction(this._target,
-                                                                this._data);
-        object = attrCopy(this, pi);
-      break;
-      case this.COMMENT_NODE:
-        object = this._ownerDocument.createComment(this.tagName);
-        object.nodeValue = this.nodeValue;
-      break;
-      case this.DOCUMENT_NODE:
-        object = attrCopy(this, new this.constructor({ parsingMode: this._parsingMode }));
-        // TODO: clone the doctype?
-      break;
-      case this.DOCUMENT_TYPE_NODE:
-        object = new core.DocumentType(this._ownerDocument, this._name, this._publicId, this._systemId);
-      break;
-      case this.DOCUMENT_FRAGMENT_NODE:
-        object = this._ownerDocument.createDocumentFragment();
-      break;
-      default:
-        throw new core.DOMException(NOT_FOUND_ERR);
-      break;
-    }
-
-    if (typeof fn === "function") {
-      fn(this, object);
-    }
-
-    if (deep || this.nodeType === ATTRIBUTE_NODE) {
-      var clone = null;
-      for (var i=0,len=this._childNodes.length;i<len;i++)
-      {
-        clone = this._childNodes[i].cloneNode(true);
-        if (clone.nodeType === ATTRIBUTE_NODE) {
-          object.setAttributeNode(clone);
-        } else {
-          var readonly = object._readonly;
-          object._readonly = false;
-          object.appendChild(clone);
-          object._readonly = readonly;
-        }
-      }
-    }
-
-    return object;
-  },
-
-  /* returns void */
-  normalize: function() {
-    var prevChild, child, attr,i;
-
-    if (this._attributes && this._attributes.length) {
-      for (i=0;i<this._attributes.length;i++)
-      {
-        if (this._attributes[i]) {
-          attr = this._attributes[i].normalize();
-        }
-      }
-    }
-
-    for (i=0;i<this._childNodes.length;i++)
-    {
-      child = this._childNodes[i];
-
-      if (child.normalize) {
-        child.normalize();
-      }
-
-      // Level2/core clean off empty nodes
-      if (child.nodeValue === "") {
-        this.removeChild(child);
-        i--;
-        continue;
-      }
-
-      if (i>0) {
-        prevChild = this._childNodes[i-1];
-
-        if (child.nodeType === TEXT_NODE &&
-            prevChild.nodeType === TEXT_NODE)
-        {
-
-          // remove the child and decrement i
-          prevChild.appendData(child.nodeValue);
-
-          this.removeChild(child);
-          i--;
-        }
-      }
-    }
-  },
-  toString: function() {
-    var id = '';
-    if (this.id) {
-        id = '#' + this.id;
-    }
-    if (this.className) {
-        var classes = this.className.split(/\s+/);
-	for (var i = 0, len = classes.length; i < len; i++) {
-	    id += '.' + classes[i];
-	}
-    }
-    return '[ ' + this.tagName + id + ' ]';
-  },
-  raise: function(type, message, data) {
-    var text = type + ": " + message;
-
-    if (data) {
-      if (data.exception) {
-        text = data.exception.stack;
-      } else {
-        text += ' - More:\n' + data;
-      }
-    }
-
-    if (type === "error") {
-      if (!this.errors) {
-        this.errors = [];
-      }
-      // TODO: consider using actual `Error` objects or `DOMException`s even..
-      var err = {
-        type    : type,
-        message : message || "No message",
-        data    : data || null
-      };
-
-      this.errors.push(err);
-
-      if (this._ownerDocument        &&
-          this._ownerDocument.raise &&
-          this !== this._ownerDocument)
-      {
-        this._ownerDocument.raise(type, message, data);
-      }
-    }
-  }
-};
-
-
-core.NamedNodeMap = function NamedNodeMap(document) {
-  this._nodes = Object.create(null);
-  this._nsStore = {};
-  this.length = 0;
-  this._ownerDocument = document;
-  this._readonly = false;
-};
-core.NamedNodeMap.prototype = {
-  get readonly() { return this._readonly;},
-  get ownerDocument() { this._ownerDocument;},
-
-  exists : function(name) {
-    return (this._nodes[name] || this._nodes[name] === null) ? true : false;
-  },
-
-  /* returns Node */
-  getNamedItem: function(/* string */ name) {
-    return this._nodes[name] || null;
-  },
-
-  /* returns Node */
-  setNamedItem: function(/* Node */ arg) {
-
-    // readonly
-    if (this._readonly === true) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR);
-    }
-
-    // arg is from a different document
-    if (arg && arg._ownerDocument !== this._ownerDocument) {
-      throw new core.DOMException(WRONG_DOCUMENT_ERR);
-    }
-
-    // if this argument is already in use..
-    if (arg && arg._ownerElement) {
-      throw new core.DOMException(INUSE_ATTRIBUTE_ERR);
-    }
-
-    var name = arg.name || arg.tagName;
-    var ret = this._nodes[name];
-    if (!ret) {
-      this.length++;
-      ret = null;
-    }
-    this._nodes[name] = arg;
-
-    // Avoid overwriting prototype methods etc.:
-    if (this.hasOwnProperty(name) || !(name in this)) {
-      this[name] = arg;
-    }
-    return ret;
-  }, // raises: function(DOMException) {},
-
-  /* returns Node */
-  removeNamedItem: function(/* string */ name) {
-
-    // readonly
-    if (this._readonly === true) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR);
-    }
-
-    if (!this._nodes[name]) {
-      throw new core.DOMException(NOT_FOUND_ERR);
-    }
-
-    var prev = this._nodes[name] || null;
-    delete this._nodes[name];
-    delete this[name];
-
-    this.length--;
-    return prev;
-  }, // raises: function(DOMException) {},
-
-  /* returns Node */
-  item: function(/* int */ index) {
-    var current = 0;
-    for (var member in this._nodes) {
-      if (current === index && this._nodes[member]) {
-        return this._nodes[member];
-      }
-      current++;
-    }
-    return null;
-  }
-};
-
-//
-// For historical reasons, AttributeList objects must allow accessing
-// attributes as if the object were an associative array. For
-// instance, if `attributes` is an AttributeList object then
-// `attributes.x` should evaluate to the attribute named `x` (which is
-// not in any namespace). The AttributeList class uses the dollar
-// symbol ($) to reduce the possibility of a clash between its field
-// names and possible attribute names. For instance, if the method
-// currently named `$set` were instead named `set` then it would not
-// be possible to access an attribute named `set` through
-// `attributes.set`. The dollar symbol is not valid in attribute names
-// so `$set` cannot clash.
-//
-// Some fields do not get the $ because:
-//
-// * They are part of the API (e.g. `setNamedItem`, `length`), so they
-//   must be visible under a specific name.
-//
-// * Jsdom's code which traverses the DOM tree expects regularly named
-//   fields (e.g. `_parentNode`).
-//
-function AttributeList(document, parentNode) {
-  this._ownerDocument = document;
-  this._parentNode = parentNode;
-  this._readonly = false;
-  this._$ns_to_attrs = Object.create(null);
-  this._$name_to_attrs = Object.create(null);
-  this.length = 0;
-}
-
-AttributeList.prototype = {
-  _$reserved: [], // Initialized later
-
-
-  //
-  // Code internal to jsdom and which manipulates an AttributeList
-  // object should use the following methods rather than the methods
-  // that provide the NamedNodeMap interface.
-  //
-
-  // This method *ignores* namespaces. This is *not* the same thing as
-  // requesting an attribute with a null namespace.
-  $getNoNS: function (name) {
-    var attrs = this._$name_to_attrs[name];
-    if (!attrs) {
-      return null;
-    }
-
-    return attrs[0] || null;
-  },
-
-  $getNode: function (namespace, localName) {
-    var attrs = this._$ns_to_attrs[namespace];
-    if (!attrs) {
-      return null;
-    }
-
-    var ret = attrs[localName];
-    if (!ret) {
-      return null;
-    }
-
-    return ret;
-  },
-
-  // This method *ignores* namespaces. This is *not* the same thing as
-  // requesting an attribute with a null namespace.
-  $setNoNS: function (name, value, dontValidate) {
-    var attr = this.$getNoNS(name);
-    if (!attr) {
-      this.$set(name, value, undefined, undefined, undefined, dontValidate);
-      return;
-    }
-
-    var prev_val = attr.value;
-    attr.value = value;
-
-    this._parentNode._attrModified(attr.name, attr.value, prev_val);
-    this._parentNode._modified();
-  },
-
-  $set: function (localName, value, name, prefix, namespace, dontValidate) {
-    if (this._readonly) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR);
-    }
-
-    if (name === undefined) {
-      name = localName;
-    }
-
-    if (prefix === undefined) {
-      prefix = null;
-    }
-
-    if (namespace === undefined) {
-      namespace = null;
-    }
-
-    var prev_attr = this.$getNode(namespace, localName);
-    var attr;
-
-    var prev_val = null;
-    if (prev_attr) {
-      prev_val = prev_attr.value;
-      prev_attr._prefix = prefix;
-      prev_attr.value = value;
-      attr = prev_attr;
-
-      this._parentNode._attrModified(attr.name, attr.value, prev_val);
-      this._parentNode._modified();
-    }
-    else {
-      var method = dontValidate ? '_createAttributeNoNameValidation' : 'createAttribute';
-      attr = this._ownerDocument[method](name);
-      attr._ownerElement = this._parentNode;
-      attr.value = value;
-      attr._namespaceURI = namespace;
-      attr._prefix = prefix;
-      attr._localName = localName;
-      attr._parentNode = this._parentNode;
-      this.$setNode(attr);
-      // $setNode calls the parent node methods.
-    }
-  },
-
-  $setNode: function (attr) {
-    if (this._readonly) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR);
-    }
-
-    if (attr.nodeType !== ATTRIBUTE_NODE) {
-      throw new core.DOMException(HIERARCHY_REQUEST_ERR);
-    }
-
-    if (attr._ownerDocument !== this._ownerDocument) {
-      throw new core.DOMException(WRONG_DOCUMENT_ERR);
-    }
-
-    if (attr._parentNode && attr._parentNode !== this._parentNode) {
-      throw new core.DOMException(INUSE_ATTRIBUTE_ERR);
-    }
-
-    var localName = attr._localName;
-    var name = attr.name;
-    var prefix = attr._prefix;
-    var namespace = attr._namespaceURI;
-
-    if (name === undefined) {
-      name = localName;
-    }
-
-    if (prefix === undefined) {
-      prefix = null;
-    }
-
-    if (namespace === undefined) {
-      namespace = null;
-    }
-
-    var prev_attr = this.$getNode(namespace, localName);
-
-    var prev_val = null;
-    if (prev_attr) {
-      prev_val = prev_attr.value;
-      // Remove the old attribute
-      this._$onlyRemoveNode(prev_attr);
-    }
-
-    attr._parentNode = this._parentNode;
-    attr._ownerElement = this._parentNode;
-
-    var attrs = this._$ns_to_attrs[namespace];
-    if (!attrs) {
-      attrs = this._$ns_to_attrs[namespace] = Object.create(null);
-    }
-    attrs[localName] = attr;
-
-    attrs = this._$name_to_attrs[name];
-    if (!attrs) {
-      attrs = this._$name_to_attrs[name] = [attr];
-    }
-    else {
-      attrs.push(attr);
-    }
-
-    // Only attributes in the null namespace can be set this way.
-    if (namespace === null) {
-      // Make the node a field on this object but ONLY if it does not
-      // clash with the reserved names.
-      if (this._$reserved.indexOf(name) === -1) {
-        this[name] = attr;
-      }
-    }
-
-    this[this.length] = attr;
-    this.length++;
-
-    this._parentNode._attrModified(attr.name, attr.value, prev_val);
-    this._parentNode._modified();
-
-    return prev_attr;
-  },
-
-  // This method *ignores* namespaces. This is *not* the same thing as
-  // requesting an attribute with a null namespace.
-  $removeNoNS: function (name) {
-    var attr = this.$getNoNS(name);
-    return attr ? this.$removeNode(attr) : null;
-  },
-
-  $remove: function (namespace, localName) {
-    var attr = this.$getNode(namespace, localName);
-    return attr ? this.$removeNode(attr) : null;
-  },
-
-  /* Only removes the node, and does not add a default value. */
-  _$onlyRemoveNode: function (attr) {
-    var namespace = attr._namespaceURI;
-    var localName = attr._localName;
-
-    var attrs = this._$ns_to_attrs[namespace];
-    if (!attrs) {
-      return null;
-    }
-
-    var found_attr = attrs[localName];
-    if (found_attr !== attr) {
-      return null;
-    }
-
-    if (this._readonly) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR);
-    }
-
-    attr._ownerElement = null;
-    attr._parentNode = null;
-    delete attrs[localName];
-
-    attrs = this._$name_to_attrs[attr.name];
-    attrs.splice(attrs.indexOf(attr), 1);
-
-    var ix = Array.prototype.indexOf.call(this, attr);
-    // Splice also modifies length.
-    Array.prototype.splice.call(this, ix, 1);
-
-    if (this[attr.name] === attr) {
-      delete this[attr.name];
-    }
-
-    this._parentNode._attrModified(attr.name);
-    this._parentNode._modified();
-
-    return attr;
-  },
-
-  $removeNode: function (attr) {
-    if (!this._$onlyRemoveNode(attr)) {
-      return null;
-    }
-    return attr;
-  },
-
-  // Although http://dom.spec.whatwg.org/#concept-element-attribute
-  // does not specify that the attributes field on an Element should
-  // support NamedNodeMap, in practice browsers still support this
-  // interface so we should support it for compatibility.
-
-  getNamedItem: function (name) {
-    return this.getNamedItemNS(null, name);
-  },
-  removeNamedItem: function (name) {
-    return this.removeNamedItemNS(null, name);
-  },
-  item: function (i) {
-      return this[i];
-  },
-  getNamedItemNS: function (namespaceURI, localName) {
-    if (namespaceURI === "") {
-      namespaceURI = null;
-    }
-
-    return this.$getNode(namespaceURI, localName);
-  },
-  removeNamedItemNS: function (namespaceURI, localName) {
-    var ret = this.$remove(namespaceURI, localName);
-
-    if (ret === null) {
-      throw new core.DOMException(NOT_FOUND_ERR);
-    }
-
-    return ret;
-  }
-};
-
-// Alias these methods.
-AttributeList.prototype.setNamedItem = AttributeList.prototype.$setNode;
-AttributeList.prototype.setNamedItemNS = AttributeList.prototype.$setNode;
-
-(function () {
-  // Construct the list of reserved attribute names from a temporarily
-  // created AttributeList and from the chain of prototypes. We need
-  // this because JavaScript code running an a browser expects to be
-  // able to do el.attributes.x to get the value of the attribute "x"
-  // on an element. Unfortunately, JavaScript *currently* does not
-  // allow us to elegantly provide such functionality without risking
-  // a clash with the fields and methods set on the AttributeList
-  // object. Hence we need a list of reserved field names.
-
-  var reserved = Object.keys(new AttributeList());
-  var prototype = AttributeList.prototype;
-  while (prototype) {
-    reserved = reserved.concat(Object.getOwnPropertyNames(prototype));
-    prototype = Object.getPrototypeOf(prototype);
-  }
-  AttributeList.prototype._$reserved = reserved;
-})();
-
-core.AttributeList = AttributeList;
-
-core.Element = function Element(document, localName) {
-  core.Node.call(this, document);
-  this._namespaceURI = null;
-  this._prefix = null;
-  this._localName = localName;
-};
-
-inheritFrom(core.Node, core.Element, {
-  get namespaceURI() {
-    return this._namespaceURI;
-  },
-  get prefix() {
-    return this._prefix;
-  },
-  get localName() {
-    return this._localName;
-  },
-  get tagName() {
-    var qualifiedName = this._prefix !== null ? this._prefix + ":" + this._localName : this._localName;
-    if (this.namespaceURI === "http://www.w3.org/1999/xhtml" && this._ownerDocument._parsingMode === "html") {
-      qualifiedName = qualifiedName.toUpperCase();
-    }
-    return qualifiedName;
-  },
-
-  get id() {
-    var idAttr = this.getAttribute("id");
-    if (idAttr === null) {
-      return "";
-    }
-    return idAttr;
-  },
-
-  nodeType : ELEMENT_NODE,
-  get attributes() {
-    return this._attributes;
-  },
-
-  get sourceIndex() {
-    /*
-    * According to QuirksMode:
-    * Get the sourceIndex of element x. This is also the index number for
-    * the element in the document.getElementsByTagName('*') array.
-    * http://www.quirksmode.org/dom/w3c_core.html#t77
-    */
-    var items = this.ownerDocument.getElementsByTagName('*'),
-        len = items.length;
-
-    for (var i = 0; i < len; i++) {
-      if (items[i] === this) {
-        return i;
-      }
-    }
-  },
-
-  get outerHTML() {
-    return domToHtml(this, true);
-  },
-
-  get innerHTML() {
-    var tagName = this.tagName;
-    if (tagName === 'SCRIPT' || tagName === 'STYLE') {
-      var type = this.getAttribute('type');
-      if (!type || /^text\//i.test(type) || /\/javascript$/i.test(type)) {
-        return domToHtml(this._childNodes, true, true);
-      }
-    }
-
-    // In case of <template> we should pass it's content fragment as a serialization root if we have one
-    if(tagName === 'TEMPLATE' &&
-       this._namespaceURI === 'http://www.w3.org/1999/xhtml' &&
-       this._childNodes[0] && this._childNodes[0]._templateContent) {
-      return domToHtml(this._childNodes[0]._childNodes, true);
-    }
-
-    return domToHtml(this._childNodes, true);
-  },
-
-  set innerHTML(html) {
-    setInnerHTML(this.ownerDocument, this, html);
-  },
-
-  scrollTop: 0,
-  scrollLeft: 0,
-
-  hasAttributes: function () {
-    return this._attributes.length > 0;
-  },
-
-  /* returns Attr */
-  setAttributeNode: function(/* Attr */ newAttr) {
-    var prevNode = this._attributes.$getNode(null, newAttr.name);
-    if (prevNode) {
-      prevNode._ownerElement = null;
-    }
-
-    newAttr._ownerElement = this;
-    this._attributes.$setNode(newAttr);
-
-    return (prevNode && prevNode.specified) ? prevNode : null;
-  }, //  raises: function(DOMException) {},
-
-  /* returns Attr */
-  removeAttributeNode: function(/* Attr */ oldAttr) {
-    var ret = this._attributes.$removeNode(oldAttr);
-
-    if (ret !== null) {
-      return ret;
-    }
-
-    throw new core.DOMException(NOT_FOUND_ERR);
-  }, //raises: function(DOMException) {},
-
-  /* returns NodeList */
-  getElementsByTagName: memoizeQuery(function(/* string */ name) {
-    name = name.toLowerCase();
-
-    function filterByTagName(child) {
-      if (child.nodeName && child.nodeType === ELEMENT_NODE) {
-        return name === "*" || (child.nodeName.toLowerCase() === name);
-      }
-
-      return false;
-    }
-    return new core.NodeList(this._ownerDocument || this, core.mapper(this, filterByTagName, true));
-  }),
-
-  getElementsByClassName: function (className) {
-
-    function filterByClassName(child) {
-      if (!child) {
-        return false;
-      }
-
-      var classString = child.className;
-      if (classString) {
-        var s = classString.split(" ");
-        for (var i = 0; i < s.length; i++) {
-          if (s[i] === className) {
-            return true;
-          }
-        }
-      }
-      return false;
-    }
-
-    return new core.NodeList(this.ownerDocument || this, core.mapper(this, filterByClassName));
-  }
-});
-
-core.DocumentFragment = function DocumentFragment(document) {
-  core.Node.call(this, document);
-};
-inheritFrom(core.Node, core.DocumentFragment, {
-  nodeType : DOCUMENT_FRAGMENT_NODE
-});
-
-core.Document = function Document(options) {
-  if (!options || !options.parsingMode || (options.parsingMode !== "html" && options.parsingMode !== "xml")) {
-    throw new Error("options must exist and contain a parsingMode of html or xml");
-  }
-
-  core.Node.call(this, "#document");
-  this._parsingMode = options.parsingMode;
-  this._implementation = new core.DOMImplementation(this);
-  this._documentElement = null;
-  this._ids = Object.create(null);
-  this._attached = true;
-  this._ownerDocument = this;
-  this._readonly = false;
-
-  this._contentType = options.contentType;
-  if (this._contentType === undefined) {
-    this._contentType = this._parsingMode === "xml" ? "application/xml" : "text/html";
-  }
-
-  this._URL = options.url;
-  if (this._URL === undefined) {
-    this._URL = "about:blank";
-  }
-  this._location = new Location(this._URL, this);
-};
-
-
-var tagRegEx = /[^\w:\d_\.-]+/i;
-var entRegEx = /[^\w\d_\-&;]+/;
-var invalidAttrRegEx = /[\s"'>/=\u0000-\u001A]/;
-
-inheritFrom(core.Node, core.Document, {
-  nodeType : DOCUMENT_NODE,
-  _elementBuilders : { },
-  _defaultElementBuilder: function(document, tagName) {
-    return new core.Element(document, tagName);
-  },
-  get contentType() { return this._contentType;},
-  get compatMode() { return (this._parsingMode === "xml" || this.doctype) ? "CSS1Compat" : "BackCompat"; },
-  get characterSet() { return "UTF-8"; },
-  get inputEncoding() { return "UTF-8"; },
-  get doctype() {
-    for (var i = 0; i < this._childNodes.length; ++i) {
-      if (this._childNodes[i].nodeType === DOCUMENT_TYPE_NODE) {
-        return this._childNodes[i];
-      }
-    }
-    return null;
-  },
-  get URL() {
-    return this._URL;
-  },
-  get documentURI() {
-    return this._URL;
-  },
-  get location() {
-    return this._location;
-  },
-  get documentElement() {
-    if (this._documentElement) {
-      return this._documentElement;
-    } else {
-      for (var i = 0; i < this._childNodes.length; ++i) {
-        if (this._childNodes[i].nodeType === ELEMENT_NODE) {
-          this._documentElement = this._childNodes[i];
-          return this._documentElement;
-        }
-      }
-      return null;
-    }
-  },
-
-  get implementation() { return this._implementation;},
-  set implementation(implementation) { this._implementation = implementation;},
-  get ownerDocument() { return null;},
-  get readonly() { return this._readonly;},
-
-  set parentWindow(window) {
-    // Contextify does not support getters and setters, so we have to set them
-    // on the original object instead.
-    window._frame = function (name, frame) {
-      if (typeof frame === 'undefined') {
-        delete window[name];
-      } else {
-        defineGetter(window, name, function () { return frame.contentWindow; });
-      }
-    };
-    this._parentWindow = window.getGlobal();
-  },
-
-  get defaultView() {
-    return this.parentWindow;
-  },
-
-  toString: function () {
-    return '[object HTMLDocument]';
-  },
-
-  _createElementNoTagNameValidation: function (tagName) {
-    var element = (this._elementBuilders[tagName.toLowerCase()] || this._defaultElementBuilder)(this, tagName);
-    element._namespaceURI = "http://www.w3.org/1999/xhtml";
-    return element;
-  },
-
-  createElement: function (localName) {
-    localName = String(localName);
-    validateName(localName, core);
-    if (this._parsingMode === "html") {
-      localName = localName.toLowerCase();
-    }
-
-    return this._createElementNoTagNameValidation(localName);
-  },
-
-  /* returns DocumentFragment */
-  createDocumentFragment: function() {
-    return new core.DocumentFragment(this);
-  },
-
-  /* returns Attr */
-  createAttribute: function (localName) {
-    localName = String(localName);
-    validateName(localName, core);
-
-    return this._createAttributeNoNameValidation(localName);
-  }, // raises: function(DOMException) {},
-
-  _createAttributeNoNameValidation: function (localName) {
-    return new core.Attr(this, localName, "");
-  },
-
-  appendChild : function(/* Node */ arg) {
-    if (this.documentElement && arg.nodeType == ELEMENT_NODE) {
-      throw new core.DOMException(HIERARCHY_REQUEST_ERR);
-    }
-    return core.Node.prototype.appendChild.call(this, arg);
-  },
-
-  removeChild : function(/* Node */ arg) {
-    var ret = core.Node.prototype.removeChild.call(this, arg);
-    if (arg == this._documentElement) {
-      this._documentElement = null;// force a recalculation
-    }
-    return ret;
-  },
-
-  /* returns NodeList */
-  getElementsByTagName: memoizeQuery(function(/* string */ name) {
-    function filterByTagName(child) {
-      if (child.nodeName && child.nodeType === ELEMENT_NODE)
-      {
-        if (name === "*") {
-          return true;
-
-        // case insensitivity for html
-        } else if (child._ownerDocument && child._ownerDocument._doctype &&
-                   //child._ownerDocument._doctype.name === "html" &&
-                   child.nodeName.toLowerCase() === name.toLowerCase())
-        {
-          return true;
-        } else if (child.nodeName.toLowerCase() === name.toLowerCase()) {
-          return true;
-        }
-      }
-      return false;
-    }
-    return new core.NodeList(this.documentElement || this, core.mapper(this, filterByTagName, true));
-  }),
-
-  getElementsByClassName: function (className) {
-
-    function filterByClassName(child) {
-      if (!child) {
-        return false;
-      }
-
-      var classString = child.className;
-      if (classString) {
-        var s = classString.split(" ");
-        for (var i = 0; i < s.length; i++) {
-          if (s[i] === className) {
-            return true;
-          }
-        }
-      }
-      return false;
-    }
-
-    return new core.NodeList(this.ownerDocument || this, core.mapper(this, filterByClassName));
-  },
-
-  write: function (text) {
-    if (this._writeAfterElement) {
-      // If called from an script element directly (during the first tick),
-      // the new elements are inserted right after that element.
-      var tempDiv = this.createElement('div');
-      setInnerHTML(this, tempDiv, text);
-
-      var child = tempDiv.firstChild;
-      var previous = this._writeAfterElement;
-      var parent = this._writeAfterElement.parentNode;
-
-      while (child) {
-        var node = child;
-        child = child.nextSibling;
-        parent.insertBefore(node, previous.nextSibling);
-        previous = node;
-      }
-    } else if (this.readyState === "loading") {
-      // During page loading, document.write appends to the current element
-      // Find the last child that has been added to the document.
-      var node = this;
-      while (node.lastChild && node.lastChild.nodeType === this.ELEMENT_NODE) {
-        node = node.lastChild;
-      }
-      setInnerHTML(this, node, text || "<html><head></head><body></body></html>");
-    } else if (text) {
-      setInnerHTML(this, this, text);
-    }
-  }
-});
-
-core.Attr = function Attr(document, name, value) {
-  core.Node.call(this, document);
-  this._valueForAttrModified = value;
-  this._name = name;
-  this._ownerElement = null;
-  this._namespaceURI = null;
-  this._localName = name;
-  this._prefix = null;
-};
-inheritFrom(core.Node, core.Attr, {
-  nodeType : ATTRIBUTE_NODE,
-  get namespaceURI() {
-    return this._namespaceURI;
-  },
-  get prefix() {
-    return this._prefix;
-  },
-  get localName() {
-    return this._localName;
-  },
-  get name() {
-    return this._name;
-  },
-  get ownerElement() {
-    return this._ownerElement;
-  },
-  get nodeValue() {
-    var val = '';
-    for (var i=0,len=this._childNodes.length;i<len;i++) {
-      var child = this._childNodes[i];
-      val += child.nodeValue;
-    }
-    return val;
-  },
-  set nodeValue(value) {
-    // readonly
-    if (this._readonly) {
-      throw new core.DOMException(NO_MODIFICATION_ALLOWED_ERR);
-    }
-
-    this._childNodes.length = 1;
-    this._childNodes[0] = this._ownerDocument.createTextNode(value);
-    this._modified();
-    var prev = this._valueForAttrModified;
-    this._nodeValue = value;
-    if (this._ownerElement) {
-      this._ownerElement._attrModified(this._name, value, prev);
-    }
-  },
-  get specified() {
-    return true;
-  },
-  get value() {
-    return this.nodeValue;
-  },
-  set value(value) {
-    this.nodeValue = value;
-  },
-  get parentNode() { return null;},
-
-  insertBefore : function(/* Node */ newChild, /* Node*/ refChild){
-    if (newChild.nodeType === CDATA_SECTION_NODE ||
-        newChild.nodeType === ELEMENT_NODE)
-    {
-      throw new core.DOMException(HIERARCHY_REQUEST_ERR);
-    }
-
-    return core.Node.prototype.insertBefore.call(this, newChild, refChild);
-  },
-
-  appendChild : function(/* Node */ arg) {
-
-    if (arg.nodeType === CDATA_SECTION_NODE ||
-        arg.nodeType === ELEMENT_NODE)
-    {
-      throw new core.DOMException(HIERARCHY_REQUEST_ERR);
-    }
-
-    return core.Node.prototype.appendChild.call(this, arg);
-  }
-
-});
diff --git a/node_modules/jsdom/lib/jsdom/level2/core.js b/node_modules/jsdom/lib/jsdom/level2/core.js
deleted file mode 100644
index 6a52baf..0000000
--- a/node_modules/jsdom/lib/jsdom/level2/core.js
+++ /dev/null
@@ -1,306 +0,0 @@
-var core         = require("../level1/core");
-var defineGetter = require('../utils').defineGetter;
-var defineSetter = require('../utils').defineSetter;
-var memoizeQuery = require('../utils').memoizeQuery;
-var validateQname = require('../living/helpers/validate-names').qname;
-var validateAndExtract = require('../living/helpers/validate-names').validateAndExtract;
-
-core.NamedNodeMap.prototype.getNamedItemNS = function(/* string */ namespaceURI,
-                                                      /* string */ localName)
-{
-  if (this._nsStore[namespaceURI] && this._nsStore[namespaceURI][localName]) {
-    return this._nsStore[namespaceURI][localName];
-  }
-  return null;
-};
-
-core.NamedNodeMap.prototype.setNamedItemNS = function(/* Node */ arg)
-{
-  if (this._readonly) {
-    throw new core.DOMException(core.NO_MODIFICATION_ALLOWED_ERR);
-  }
-
-  if (this._ownerDocument !== arg.ownerDocument) {
-    throw new core.DOMException(core.WRONG_DOCUMENT_ERR);
-  }
-
-  if (arg._ownerElement) {
-    throw new core.DOMException(core.INUSE_ATTRIBUTE_ERR);
-  }
-
-  // readonly
-  if (this._readonly === true) {
-    throw new core.DOMException(core.NO_MODIFICATION_ALLOWED_ERR);
-  }
-
-
-  if (!this._nsStore[arg.namespaceURI]) {
-    this._nsStore[arg.namespaceURI] = {};
-  }
-  var existing = null;
-  if (this._nsStore[arg.namespaceURI][arg.localName]) {
-    var existing = this._nsStore[arg.namespaceURI][arg.localName];
-  }
-
-  this._nsStore[arg.namespaceURI][arg.localName] = arg;
-
-  arg._ownerDocument = this._ownerDocument;
-
-  return this.setNamedItem(arg);
-};
-
-core.NamedNodeMap.prototype.removeNamedItemNS = function(/*string */ namespaceURI,
-                                                         /* string */ localName)
-{
-
-  if (this.readonly) {
-    throw new core.DOMException(core.NO_MODIFICATION_ALLOWED_ERR);
-  }
-
-
-  var parent = this._parentNode,
-      found = null,
-      defaults,
-      clone,
-      defaultEl,
-      defaultAttr;
-
-  if (this._nsStore[namespaceURI] &&
-      this._nsStore[namespaceURI][localName])
-  {
-    found = this._nsStore[namespaceURI][localName];
-    this.removeNamedItem(found.qualifiedName);
-    delete this._nsStore[namespaceURI][localName];
-  }
-
-  if (!found) {
-    throw new core.DOMException(core.NOT_FOUND_ERR);
-  }
-
-  return found;
-};
-
-core.NamedNodeMap.prototype._map = function(fn) {
-  var ret = [], l = this.length, i = 0, node;
-  for(i; i<l; i++) {
-    node = this.item(i);
-    if (fn && fn(node)) {
-      ret.push(node);
-    }
-  }
-  return ret;
-};
-
-core.Element.prototype.getAttribute = function(/* string */ name)
-{
-  var attr =  this.getAttributeNode(name);
-  return attr && attr.value;
-};
-
-core.Element.prototype.getAttributeNode = function(/* string */ name)
-{
-  return this._attributes.$getNoNS(name);
-};
-
-core.Element.prototype.removeAttribute = function(/* string */ name)
-{
-  return this._attributes.$removeNoNS(name);
-};
-
-core.Element.prototype.getAttributeNS = function(/* string */ namespaceURI,
-                                                 /* string */ localName)
-{
-  if (namespaceURI === "") {
-    namespaceURI = null;
-  }
-
-  var attr =  this._attributes.$getNode(namespaceURI, localName);
-  return attr && attr.value;
-};
-
-core.Element.prototype.setAttribute = function(/* string */ name,
-                                               /* string */ value)
-{
-  this._attributes.$setNoNS(name, value);
-};
-
-core.Element.prototype._setAttributeNoValidation = function (name, value) {
-  this._attributes.$setNoNS(name, value, true);
-};
-
-core.Element.prototype.setAttributeNS = function (namespace, name, value) {
-  namespace = namespace !== null ? String(namespace) : namespace;
-  name = String(name);
-  value = String(value);
-
-  var extracted = validateAndExtract(namespace, name, core);
-
-  this._attributes.$set(extracted.localName, value, extracted.qualifiedName, extracted.prefix, extracted.namespace);
-};
-
-core.Element.prototype.removeAttributeNS = function(/* string */ namespaceURI,
-                                                    /* string */ localName)
-{
-  if (namespaceURI === "") {
-    namespaceURI = null;
-  }
-
-  this._attributes.$remove(namespaceURI, localName);
-};
-
-core.Element.prototype.getAttributeNodeNS = function(/* string */ namespaceURI,
-                                                     /* string */ localName)
-{
-  if (namespaceURI === "") {
-    namespaceURI = null;
-  }
-
-  return this._attributes.$getNode(namespaceURI, localName);
-};
-
-core.Element.prototype.setAttributeNodeNS = function(/* Attr */ newAttr)
-{
-  if (newAttr.ownerElement) {
-    throw new core.DOMException(core.INUSE_ATTRIBUTE_ERR);
-  }
-
-  return this._attributes.$setNode(newAttr);
-};
-
-core.Element.prototype.getElementsByTagNameNS = memoizeQuery(function(/* String */ namespaceURI,
-                                                         /* String */ localName)
-{
-  var nsPrefixCache = {};
-
-  function filterByTagName(child) {
-    var localMatch = child.localName === localName,
-        nsMatch    = child.namespaceURI === namespaceURI;
-
-    if ((localMatch || localName === "*") &&
-        (nsMatch || namespaceURI === "*"))
-    {
-      if (child.nodeType === child.ELEMENT_NODE) {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  return new core.NodeList(this.ownerDocument || this,
-                           core.mapper(this, filterByTagName));
-});
-
-core.Element.prototype.hasAttribute = function(/* string */name)
-{
-  if (!this._attributes) {
-    return false;
-  }
-
-  // Note: you might think you only need the latter condition. However, it makes a test case fail.
-  // HOWEVER, that test case is for a XML DTD feature called "default attributes" that never was implemented by
-  // browsers, so when we remove default attributes, we should be able to fix this code too.
-  return !!this._attributes.$getNoNS(name) || !!this._attributes.$getNoNS(name.toLowerCase());
-};
-
-core.Element.prototype.hasAttributeNS = function(/* string */namespaceURI,
-                                                 /* string */localName)
-{
-  if (namespaceURI === "") {
-    namespaceURI = null;
-  }
-
-  return (this._attributes.getNamedItemNS(namespaceURI, localName) ||
-          this.hasAttribute(localName));
-};
-
-core.Document.prototype.importNode = function(/* Node */ importedNode,
-                                              /* bool */ deep)
-{
-  if (importedNode && importedNode.nodeType) {
-    if (importedNode.nodeType === this.DOCUMENT_NODE ||
-        importedNode.nodeType === this.DOCUMENT_TYPE_NODE) {
-      throw new core.DOMException(core.NOT_SUPPORTED_ERR);
-    }
-  }
-
-  var self = this,
-      newNode = importedNode.cloneNode(deep, function(a, b) {
-        b._prefix        = a._prefix;
-        b._namespaceURI  = a._namespaceURI;
-        b._localName     = a._localName;
-      });
-
-  function lastChance(el) {
-    var attr, defaultEl, i, len;
-
-    el._ownerDocument = self;
-    if (el.id) {
-      if (!self._ids) {self._ids = {};}
-      if (!self._ids[el.id]) {self._ids[el.id] = [];}
-      self._ids[el.id].push(el);
-    }
-    if (el._attributes) {
-      var drop = [];
-      el._attributes._ownerDocument = self;
-      for (i=0,len=el._attributes.length; i < len; i++) {
-        attr = el._attributes[i];
-        attr._ownerDocument = self;
-      }
-
-      // Remove obsolete default nodes.
-      for(i = 0; i < drop.length; ++i) {
-        el._attributes.$removeNode(drop[i]);
-      }
-
-    }
-  }
-
-  if (deep) {
-    core.visitTree(newNode, lastChance);
-  }
-  else {
-    lastChance(newNode);
-  }
-
-  return newNode;
-};
-
-core.Document.prototype.createElementNS = function (namespace, qualifiedName) {
-  namespace = namespace !== null ? String(namespace) : namespace;
-  qualifiedName = String(qualifiedName);
-
-  var extracted = validateAndExtract(namespace, qualifiedName, core);
-  var element = this.createElement(extracted.localName);
-  element._namespaceURI = extracted.namespace;
-  element._prefix = extracted.prefix;
-
-  return element;
-};
-
-core.Document.prototype.createAttributeNS = function (namespace, qualifiedName) {
-  namespace = namespace !== null ? String(namespace) : namespace;
-  qualifiedName = String(qualifiedName);
-
-  var extracted = validateAndExtract(namespace, qualifiedName, core);
-  attribute = this.createAttribute(extracted.qualifiedName);
-
-  attribute._namespaceURI = extracted.namespace;
-  attribute._prefix = extracted.prefix;
-  attribute._localName = extracted.localName;
-  attribute._name = extracted.qualifiedName;
-
-  return attribute;
-};
-
-core.Document.prototype.getElementsByTagNameNS = function(/* String */ namespaceURI,
-                                                          /* String */ localName)
-{
-  return core.Element.prototype.getElementsByTagNameNS.call(this,
-                                                            namespaceURI,
-                                                            localName);
-};
-
-core.Document.prototype.getElementById = function(id) {
-  // return the first element
-  return (this._ids && this._ids[id] && this._ids[id].length > 0 ? this._ids[id][0] : null);
-};
diff --git a/node_modules/jsdom/lib/jsdom/level2/events.js b/node_modules/jsdom/lib/jsdom/level2/events.js
deleted file mode 100644
index 2b19033..0000000
--- a/node_modules/jsdom/lib/jsdom/level2/events.js
+++ /dev/null
@@ -1,441 +0,0 @@
-/* DOM Level2 Events implemented as described here:
- *
- * http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/events.html
- *
- */
-var core = require("../level1/core"),
-    utils = require("../utils"),
-    defineGetter = utils.defineGetter,
-    defineSetter = utils.defineSetter,
-    inheritFrom = utils.inheritFrom;
-
-core.EventException = function() {
-    if (arguments.length > 0) {
-        this._code = arguments[0];
-    } else {
-        this._code = 0;
-    }
-    if (arguments.length > 1) {
-        this._message = arguments[1];
-    } else {
-        this._message = "Unspecified event type";
-    }
-    Error.call(this, this._message);
-    if (Error.captureStackTrace) {
-        Error.captureStackTrace(this, core.EventException);
-    }
-};
-inheritFrom(Error, core.EventException, {
-  UNSPECIFIED_EVENT_TYPE_ERR : 0,
-  get code() { return this._code;}
-});
-
-core.Event = function(eventType) {
-    this._eventType = eventType;
-    this._type = null;
-    this._bubbles = null;
-    this._cancelable = null;
-    this._target = null;
-    this._currentTarget = null;
-    this._eventPhase = 0;
-    this._timeStamp = null;
-    this._preventDefault = false;
-    this._stopPropagation = false;
-};
-core.Event.prototype = {
-    initEvent: function(type, bubbles, cancelable) {
-        this._type = type;
-        this._bubbles = bubbles;
-        this._cancelable = cancelable;
-    },
-    preventDefault: function() {
-        if (this._cancelable) {
-            this._preventDefault = true;
-        }
-    },
-    stopPropagation: function() {
-        this._stopPropagation = true;
-    },
-    NONE            : 0,
-    CAPTURING_PHASE : 1,
-    AT_TARGET       : 2,
-    BUBBLING_PHASE  : 3,
-    get eventType() { return this._eventType; },
-    get type() { return this._type; },
-    get bubbles() { return this._bubbles; },
-    get cancelable() { return this._cancelable; },
-    get target() { return this._target; },
-    get currentTarget() { return this._currentTarget; },
-    get eventPhase() { return this._eventPhase; },
-    get timeStamp() { return this._timeStamp; }
-};
-
-
-core.UIEvent = function(eventType) {
-    core.Event.call(this, eventType);
-    this.view = null;
-    this.detail = null;
-};
-inheritFrom(core.Event, core.UIEvent, {
-    initUIEvent: function(type, bubbles, cancelable, view, detail) {
-        this.initEvent(type, bubbles, cancelable);
-        this.view = view;
-        this.detail = detail;
-    },
-});
-
-
-core.MouseEvent = function(eventType) {
-    core.UIEvent.call(this, eventType);
-    this.screenX = null;
-    this.screenY = null;
-    this.clientX = null;
-    this.clientY = null;
-    this.ctrlKey = null;
-    this.shiftKey = null;
-    this.altKey = null;
-    this.metaKey = null;
-    this.button = null;
-    this.relatedTarget = null;
-};
-inheritFrom(core.UIEvent, core.MouseEvent, {
-    initMouseEvent:   function(type,
-                               bubbles,
-                               cancelable,
-                               view,
-                               detail,
-                               screenX,
-                               screenY,
-                               clientX,
-                               clientY,
-                               ctrlKey,
-                               altKey,
-                               shiftKey,
-                               metaKey,
-                               button,
-                               relatedTarget) {
-        this.initUIEvent(type, bubbles, cancelable, view, detail);
-        this.screenX  = screenX
-        this.screenY  = screenY
-        this.clientX  = clientX
-        this.clientY  = clientY
-        this.ctrlKey  = ctrlKey
-        this.shiftKey  = shiftKey
-        this.altKey  = altKey
-        this.metaKey  = metaKey
-        this.button  = button
-        this.relatedTarget  = relatedTarget
-    }
-});
-
-
-core.MutationEvent = function(eventType) {
-    core.Event.call(this, eventType);
-    this.relatedNode = null;
-    this.prevValue = null;
-    this.newValue = null;
-    this.attrName = null;
-    this.attrChange = null;
-};
-inheritFrom(core.Event, core.MutationEvent, {
-    initMutationEvent:   function(type,
-                                  bubbles,
-                                  cancelable,
-                                  relatedNode,
-                                  prevValue,
-                                  newValue,
-                                  attrName,
-                                  attrChange) {
-        this.initEvent(type, bubbles, cancelable);
-        this.relatedNode = relatedNode;
-        this.prevValue = prevValue;
-        this.newValue = newValue;
-        this.attrName = attrName;
-        this.attrChange = attrChange;
-    },
-    MODIFICATION : 1,
-    ADDITION     : 2,
-    REMOVAL      : 3
-});
-
-core.EventTarget = function() {};
-
-function getListeners(target, type, capturing) {
-    var listeners = target._listeners
-            && target._listeners[type]
-            && target._listeners[type][capturing] || [];
-    if (!capturing) {
-        var traditionalHandler = target['on' + type];
-        if (traditionalHandler) {
-            var implementation = (target._ownerDocument ? target._ownerDocument.implementation
-                                                        : target.document.implementation);
-
-            if (implementation._hasFeature('ProcessExternalResources', 'script')) {
-                if (listeners.indexOf(traditionalHandler) < 0) {
-                    listeners.push(traditionalHandler);
-                }
-            }
-        }
-    }
-    return listeners;
-}
-
-function dispatchPhase(event, iterator) {
-    var target = iterator();
-
-    while (target && !event._stopPropagation) {
-        if (event._eventPhase === event.CAPTURING_PHASE || event._eventPhase === event.AT_TARGET) {
-            callListeners(event, target, getListeners(target, event._type, true));
-        }
-        if (event._eventPhase === event.AT_TARGET || event._eventPhase === event.BUBBLING_PHASE) {
-            callListeners(event, target, getListeners(target, event._type, false));
-        }
-        target = iterator();
-    }
-}
-
-function callListeners(event, target, listeners) {
-    var currentListener = listeners.length;
-    while (currentListener--) {
-        event._currentTarget = target;
-        try {
-          listeners[currentListener].call(target, event);
-        } catch (e) {
-          target.raise(
-            'error', "Dispatching event '" + event._type + "' failed",
-            {error: e, event: event}
-          );
-        }
-    }
-}
-
-function forwardIterator(list) {
-  var i = 0, len = list.length;
-  return function iterator() { return i < len ? list[i++] : null };
-}
-
-function backwardIterator(list) {
-  var i = list.length;
-  return function iterator() { return i >=0 ? list[--i] : null };
-}
-
-function singleIterator(obj) {
-  var i = 1;
-  return function iterator() { return i-- ? obj : null };
-}
-
-core.EventTarget.prototype = {
-    addEventListener: function(type, listener, capturing) {
-        this._listeners = this._listeners || {};
-        var listeners = this._listeners[type] || {};
-        capturing = (capturing === true);
-        var capturingListeners = listeners[capturing] || [];
-        for (var i=0; i < capturingListeners.length; i++) {
-            if (capturingListeners[i] === listener) {
-                return;
-            }
-        }
-        capturingListeners.push(listener);
-        listeners[capturing] = capturingListeners;
-        this._listeners[type] = listeners;
-    },
-
-    removeEventListener: function(type, listener, capturing) {
-        var listeners  = this._listeners && this._listeners[type];
-        if (!listeners) return;
-        var capturingListeners = listeners[(capturing === true)];
-        if (!capturingListeners) return;
-        for (var i=0; i < capturingListeners.length; i++) {
-            if (capturingListeners[i] === listener) {
-                capturingListeners.splice(i, 1);
-                return;
-            }
-        }
-    },
-
-    dispatchEvent: function(event) {
-        if (event == null) {
-            throw new core.EventException(0, "Null event");
-        }
-        if (event._type == null || event._type == "") {
-            throw new core.EventException(0, "Uninitialized event");
-        }
-
-        var targetList = [];
-
-        event._target = this;
-
-        //per the spec we gather the list of targets first to ensure
-        //against dom modifications during actual event dispatch
-        var target = this,
-            targetParent = target._parentNode;
-        while (targetParent) {
-            targetList.push(targetParent);
-            target = targetParent;
-            targetParent = target._parentNode;
-        }
-        targetParent = target._parentWindow;
-        if (targetParent) {
-            targetList.push(targetParent);
-        }
-
-        var iterator = backwardIterator(targetList);
-
-        event._eventPhase = event.CAPTURING_PHASE;
-        dispatchPhase(event, iterator);
-
-        iterator = singleIterator(event._target);
-        event._eventPhase = event.AT_TARGET;
-        dispatchPhase(event, iterator);
-
-        if (event._bubbles) {
-            iterator = forwardIterator(targetList);
-            event._eventPhase = event.BUBBLING_PHASE;
-            dispatchPhase(event, iterator);
-        }
-
-        event._currentTarget = null;
-        event._eventPhase = event.NONE;
-
-        return !event._preventDefault;
-    }
-
-};
-
-// Reinherit class heirarchy with EventTarget at its root
-inheritFrom(core.EventTarget, core.Node, core.Node.prototype);
-
-// Node
-inheritFrom(core.Node, core.Attr, core.Attr.prototype);
-inheritFrom(core.Node, core.Document, core.Document.prototype);
-inheritFrom(core.Node, core.DocumentFragment, core.DocumentFragment.prototype);
-inheritFrom(core.Node, core.Element, core.Element.prototype);
-
-
-function getDocument(el) {
-  return el.nodeType == core.Node.DOCUMENT_NODE ? el : el._ownerDocument;
-}
-
-function mutationEventsEnabled(el) {
-  return el.nodeType != core.Node.ATTRIBUTE_NODE &&
-         getDocument(el).implementation._hasFeature('MutationEvents');
-}
-
-var insertBefore_super = core.Node.prototype.insertBefore;
-core.Node.prototype.insertBefore = function(newChild, refChild) {
-  var ret = insertBefore_super.apply(this, arguments);
-  if (mutationEventsEnabled(this)) {
-    var doc = getDocument(this),
-        ev = doc.createEvent("MutationEvents");
-
-    ev.initMutationEvent("DOMNodeInserted", true, false, this, null, null, null, null);
-    newChild.dispatchEvent(ev);
-    if (this.nodeType == core.Node.DOCUMENT_NODE || this._attachedToDocument) {
-      ev = doc.createEvent("MutationEvents");
-      ev.initMutationEvent("DOMNodeInsertedIntoDocument", false, false, null, null, null, null, null);
-      core.visitTree(newChild, function(el) {
-        if (el.nodeType == core.Node.ELEMENT_NODE) {
-          el.dispatchEvent(ev);
-          el._attachedToDocument = true;
-        }
-      });
-    }
-  }
-  return ret;
-};
-
-var removeChild_super = core.Node.prototype.removeChild;
-core.Node.prototype.removeChild = function (oldChild) {
-  if (mutationEventsEnabled(this)) {
-    var doc = getDocument(this),
-        ev = doc.createEvent("MutationEvents");
-
-    ev.initMutationEvent("DOMNodeRemoved", true, false, this, null, null, null, null);
-    oldChild.dispatchEvent(ev);
-
-    ev = doc.createEvent("MutationEvents");
-    ev.initMutationEvent("DOMNodeRemovedFromDocument", false, false, null, null, null, null, null);
-    core.visitTree(oldChild, function(el) {
-      if (el.nodeType == core.Node.ELEMENT_NODE) {
-        el.dispatchEvent(ev);
-        el._attachedToDocument = false;
-      }
-    });
-  }
-  return removeChild_super.apply(this, arguments);
-};
-
-function dispatchAttrEvent(doc, target, prevVal, newVal, attrName, attrChange) {
-  if (!newVal || newVal != prevVal) {
-    var ev = doc.createEvent("MutationEvents");
-    ev.initMutationEvent("DOMAttrModified", true, false, target, prevVal,
-                         newVal, attrName, attrChange);
-    target.dispatchEvent(ev);
-  }
-}
-
-function attrNodeInterceptor(_super, change) {
-  return function(node) {
-    var target = this._parentNode,
-        prev = _super.apply(this, arguments);
-
-    if (mutationEventsEnabled(target)) {
-      dispatchAttrEvent(target._ownerDocument,
-                        target,
-                        prev && prev.value || null,
-                        change == 'ADDITION' ? node.value : null,
-                        prev && prev.name || node.name,
-                        core.MutationEvent.prototype[change]);
-    }
-
-    return prev;
-  };
-}
-
-function attrInterceptor(_super, ns) {
-  return function(localName, value, _name, _prefix, _namespace) {
-    var target = this._parentNode,
-        namespace = _namespace; // do not reassign parameters when using "arguments" (performance)
-
-    if (!mutationEventsEnabled(target)) {
-      _super.apply(this, arguments);
-      return;
-    }
-
-    if (namespace === undefined) {
-        namespace = null;
-    }
-
-    var prev =
-          ns ? this.$getNode(namespace, localName) : this.$getNoNS(localName);
-    var prevVal = prev && prev.value || null;
-
-    _super.apply(this, arguments);
-
-    var node = ns ? this.$getNode(namespace, localName):
-            this.$getNoNS(localName);
-
-    dispatchAttrEvent(target._ownerDocument,
-                      target,
-                      prevVal,
-                      node.value,
-                      node.name,
-                      core.MutationEvent.prototype.ADDITION);
-  };
-}
-
-
-core.AttributeList.prototype.$removeNode = attrNodeInterceptor(core.AttributeList.prototype.$removeNode, 'REMOVAL');
-core.AttributeList.prototype.$setNode = attrNodeInterceptor(core.AttributeList.prototype.$setNode, 'ADDITION');
-core.AttributeList.prototype.$set = attrInterceptor(core.AttributeList.prototype.$set, true);
-core.AttributeList.prototype.$setNoNS = attrInterceptor(core.AttributeList.prototype.$setNoNS, false);
-
-core.Document.prototype.createEvent = function(eventType) {
-    switch (eventType) {
-        case "MutationEvents": return new core.MutationEvent(eventType);
-        case "UIEvents": return new core.UIEvent(eventType);
-        case "MouseEvents": return new core.MouseEvent(eventType);
-        case "HTMLEvents": return new core.Event(eventType);
-    }
-    return new core.Event(eventType);
-};
diff --git a/node_modules/jsdom/lib/jsdom/level2/html.js b/node_modules/jsdom/lib/jsdom/level2/html.js
deleted file mode 100644
index 752f575..0000000
--- a/node_modules/jsdom/lib/jsdom/level2/html.js
+++ /dev/null
@@ -1,2140 +0,0 @@
-var core                  = require("../level1/core"),
-    applyDocumentFeatures = require('../browser/documentfeatures').applyDocumentFeatures,
-    defineGetter          = require('../utils').defineGetter,
-    defineSetter          = require('../utils').defineSetter,
-    inheritFrom           = require("../utils").inheritFrom,
-    resolveHref           = require("../utils").resolveHref,
-    URL                   = require("url"),
-    Path                  = require('path'),
-    fs                    = require("fs"),
-    http                  = require('http'),
-    https                 = require('https');
-
-var isBrowser = Object.prototype.toString.call(process) !== "[object process]";
-
-// Setup the javascript language processor
-core.languageProcessors = {
-  javascript : require("./languages/javascript").javascript
-};
-
-core.resourceLoader = {
-  load: function(element, href, callback) {
-    var ownerDoc = element._ownerDocument;
-    var ownerImplementation = ownerDoc.implementation;
-
-    if (ownerImplementation._hasFeature('FetchExternalResources', element.tagName.toLowerCase())) {
-      var full = this.resolve(ownerDoc, href);
-      var url = URL.parse(full);
-      if (ownerImplementation._hasFeature('SkipExternalResources', full)) {
-        return false;
-      }
-
-      var cookie = ownerDoc.cookie;
-      var cookieDomain = ownerDoc._cookieDomain;
-      var baseUrl = this.baseUrl(ownerDoc);
-      var enqueued = this.enqueue(element, callback, full);
-
-      if (typeof ownerDoc._resourceLoader == 'function') {
-        var fetch = this.fetch.bind(this);
-        ownerDoc._resourceLoader.call(null, {
-          url: url,
-          cookie: cookie,
-          cookieDomain: cookieDomain,
-          baseUrl: baseUrl,
-          defaultFetch: function(callback) {
-            fetch(this.url, this.cookie, this.cookieDomain, this.baseUrl, callback);
-          }
-        }, enqueued);
-      } else {
-        this.fetch(url, cookie, cookieDomain, baseUrl, enqueued);
-      }
-    }
-  },
-  enqueue: function(element, callback, filename) {
-    var loader = this,
-        doc    = element.nodeType === core.Node.DOCUMENT_NODE ?
-                 element                :
-                 element._ownerDocument;
-
-    if (!doc._queue) {
-      return function() {};
-    }
-
-    return doc._queue.push(function(err, data) {
-      var ev = doc.createEvent('HTMLEvents');
-
-      if (!err) {
-        try {
-          callback.call(element, data, filename || doc.URL);
-          ev.initEvent('load', false, false);
-        }
-        catch(e) {
-          err = e;
-        }
-      }
-
-      if (err) {
-        ev.initEvent('error', false, false);
-        ev.error = err;
-      }
-
-      element.dispatchEvent(ev);
-    });
-  },
-
-  baseUrl: function(document) {
-    var baseElements = document.getElementsByTagName('base');
-    var baseUrl = document.URL;
-
-    if (baseElements.length > 0) {
-      var baseHref = baseElements.item(0).href;
-      if (baseHref) {
-        baseUrl = resolveHref(baseUrl, baseHref);
-      }
-    }
-
-    return baseUrl;
-  },
-  resolve: function(document, href) {
-    // if getAttribute returns null, there is no href
-    // lets resolve to an empty string (nulls are not expected farther up)
-    if (href === null) {
-      return '';
-    }
-
-    var baseUrl = this.baseUrl(document);
-
-    return resolveHref(baseUrl, href);
-  },
-  fetch: function(url, cookie, cookieDomain, referrer, callback) {
-    if (url.hostname) {
-      this.download(url, cookie, cookieDomain, referrer, callback);
-    } else {
-      this.readFile(url.pathname, callback);
-    }
-  },
-  download: function(url, cookie, cookieDomain, referrer, callback) {
-    var path    = (url.pathname || '') + (url.search || ''),
-        options = {'method': 'GET', 'host': url.hostname, 'path': path},
-        request;
-    if (url.protocol === 'https:') {
-      options.port = url.port || 443;
-      request = https.request(options);
-    } else {
-      options.port = url.port || 80;
-      request = http.request(options);
-    }
-
-    // set header; accomodate browserify
-    if (referrer && !isBrowser) {
-        request.setHeader('Referer', referrer);
-    }
-    if (cookie) {
-      var host = url.host.split(':')[0];
-      if (host.indexOf(cookieDomain, host.length - cookieDomain.length) !== -1) {
-        request.setHeader('cookie', cookie);
-      }
-    }
-
-    request.on('response', function (response) {
-      var data = '';
-      function success () {
-        if ([301, 302, 303, 307].indexOf(response.statusCode) > -1) {
-          var redirect = URL.resolve(url, response.headers["location"]);
-          core.resourceLoader.download(URL.parse(redirect), cookie, cookieDomain, referrer, callback);
-        } else {
-          callback(null, data);
-        }
-      }
-
-      // Accomodate browserify
-      if (response.setEncoding) {
-        response.setEncoding('utf8');
-      }
-
-      response.on('data', function (chunk) {
-        data += chunk.toString();
-      });
-      response.on('end', function() {
-        // According to node docs, 'close' can fire after 'end', but not
-        // vice versa.  Remove 'close' listener so we don't call success twice.
-        response.removeAllListeners('close');
-        success();
-      });
-      response.on('close', function (err) {
-        if (err) {
-          callback(err);
-        } else {
-          success();
-        }
-      });
-    });
-
-    request.on('error', callback);
-    request.end();
-  },
-  readFile: function(url, callback) {
-    fs.readFile(url.replace(/^file:\/\//, "").replace(/^\/([a-z]):\//i, '$1:/').replace(/%20/g, ' '), 'utf8', callback);
-  }
-};
-
-function define(elementClass, def) {
-  var tagName = def.tagName,
-    tagNames = def.tagNames || (tagName? [tagName] : []),
-    parentClass = def.parentClass || core.HTMLElement,
-    attrs = def.attributes || [],
-    proto = def.proto || {};
-
-  var elem = core[elementClass] = function(document, name) {
-    parentClass.call(this, document, name || tagName.toUpperCase());
-    if (elem._init) {
-      elem._init.call(this);
-    }
-  };
-  elem._init = def.init;
-
-  inheritFrom(parentClass, elem, proto);
-
-  attrs.forEach(function(n) {
-      var prop = n.prop || n,
-        attr = n.attr || prop.toLowerCase();
-
-      if (!n.prop || n.read !== false) {
-        defineGetter(elem.prototype, prop, function() {
-          var s = this.getAttribute(attr);
-          if (n.type && n.type === 'boolean') {
-            return s !== null;
-          }
-          if (n.type && n.type === 'long') {
-            return +s;
-          }
-          if (typeof n === 'object' && n.normalize) { // see GH-491
-            return n.normalize(s);
-          }
-          if (s === null) {
-            s = '';
-          }
-          return s;
-        });
-      }
-
-      if (!n.prop || n.write !== false) {
-        defineSetter(elem.prototype, prop, function(val) {
-          if (!val) {
-            this.removeAttribute(attr);
-          }
-          else {
-            var s = val.toString();
-            if (typeof n === 'object' && n.normalize) {
-              s = n.normalize(s);
-            }
-            this.setAttribute(attr, s);
-          }
-        });
-      }
-  });
-
-  tagNames.forEach(function(tag) {
-    core.Document.prototype._elementBuilders[tag.toLowerCase()] = function(doc, s) {
-      var el = new elem(doc, s);
-
-      if (def.elementBuilder) {
-        return def.elementBuilder(el, doc, s);
-      }
-
-      return el;
-    };
-  });
-}
-
-
-
-core.HTMLCollection = function HTMLCollection(element, query) {
-  this._keys = [];
-  core.NodeList.call(this, element, query);
-};
-inheritFrom(core.NodeList, core.HTMLCollection, {
-  namedItem: function(name) {
-    // Try property shortcut; should work in most cases
-    if (Object.prototype.hasOwnProperty.call(this, name)) {
-      return this[name];
-    }
-
-    var results = this._toArray(),
-        l       = results.length,
-        node,
-        matchingName = null;
-
-    for (var i=0; i<l; i++) {
-      node = results[i];
-      if (node.getAttribute('id') === name) {
-        return node;
-      } else if (node.getAttribute('name') === name) {
-        matchingName = node;
-      }
-    }
-    return matchingName;
-  },
-  toString: function() {
-    return '[ jsdom HTMLCollection ]: contains ' + this.length + ' items';
-  },
-  _resetTo: function(array) {
-    var i, _this = this;
-
-    for (i = 0; i < this._keys.length; ++i) {
-      delete this[this._keys[i]];
-    }
-    this._keys = [];
-
-    core.NodeList.prototype._resetTo.apply(this, arguments);
-
-    function testAttr(node, attr) {
-      var val = node.getAttribute(attr);
-      if (val && !Object.prototype.hasOwnProperty.call(_this, val)) {
-        _this[val] = node;
-        _this._keys.push(val);
-      }
-    }
-    for (i = 0; i < array.length; ++i) {
-      testAttr(array[i], 'id');
-    }
-    for (i = 0; i < array.length; ++i) {
-      testAttr(array[i], 'name');
-    }
-  }
-});
-Object.defineProperty(core.HTMLCollection.prototype, 'constructor', {
-  value: core.NodeList,
-  writable: true,
-  configurable: true
-});
-
-core.HTMLOptionsCollection = core.HTMLCollection;
-
-function closest(e, tagName) {
-  tagName = tagName.toUpperCase();
-  while (e) {
-    if (e.nodeName.toUpperCase() === tagName ||
-        (e.tagName && e.tagName.toUpperCase() === tagName))
-    {
-      return e;
-    }
-    e = e._parentNode;
-  }
-  return null;
-}
-
-function descendants(e, tagName, recursive) {
-  var owner = recursive ? e._ownerDocument || e : e;
-  return new core.HTMLCollection(owner, core.mapper(e, function(n) {
-    return n.tagName === tagName;
-  }, recursive));
-}
-
-function firstChild(e, tagName) {
-  if (!e) {
-    return null;
-  }
-  var c = descendants(e, tagName, false);
-  return c.length > 0 ? c[0] : null;
-}
-
-function ResourceQueue(paused) {
-  this.paused = !!paused;
-}
-ResourceQueue.prototype = {
-  push: function(callback) {
-    var q = this;
-    var item = {
-      prev: q.tail,
-      check: function() {
-        if (!q.paused && !this.prev && this.fired){
-          callback(this.err, this.data);
-          if (this.next) {
-            this.next.prev = null;
-            this.next.check();
-          }else{//q.tail===this
-      q.tail = null;
-    }
-        }
-      }
-    };
-    if (q.tail) {
-      q.tail.next = item;
-    }
-    q.tail = item;
-    return function(err, data) {
-      item.fired = 1;
-      item.err = err;
-      item.data = data;
-      item.check();
-    };
-  },
-  resume: function() {
-    if(!this.paused){
-      return;
-    }
-    this.paused = false;
-    var head = this.tail;
-    while(head && head.prev){
-      head = head.prev;
-    }
-    if(head){
-      head.check();
-    }
-  }
-};
-
-core.HTMLDocument = function HTMLDocument(options) {
-  core.Document.call(this, options);
-  this._referrer = options.referrer;
-  this._cookie = options.cookie;
-  this._cookieDomain = options.cookieDomain || '127.0.0.1';
-  this._documentRoot = options.documentRoot || Path.dirname(this._URL);
-  this._queue = new ResourceQueue(options.deferClose);
-  this._resourceLoader = options.resourceLoader;
-  this.readyState = 'loading';
-
-  // Add level2 features
-  this.implementation._addFeature('core'  , '2.0');
-  this.implementation._addFeature('html'  , '2.0');
-  this.implementation._addFeature('xhtml' , '2.0');
-  this.implementation._addFeature('xml'   , '2.0');
-};
-
-inheritFrom(core.Document, core.HTMLDocument, {
-  _referrer : "",
-  get referrer() {
-    return this._referrer || '';
-  },
-  get domain() {
-    return "";
-  },
-  get images() {
-    return this.getElementsByTagName('IMG');
-  },
-  get applets() {
-    return new core.HTMLCollection(this, core.mapper(this, function(el) {
-      if (el && el.tagName) {
-        var upper = el.tagName.toUpperCase();
-        if (upper === "APPLET") {
-          return true;
-        } else if (upper === "OBJECT" &&
-          el.getElementsByTagName('APPLET').length > 0)
-        {
-          return true;
-        }
-      }
-    }));
-  },
-  get links() {
-    return new core.HTMLCollection(this, core.mapper(this, function(el) {
-      if (el && el.tagName) {
-        var upper = el.tagName.toUpperCase();
-        if (upper === "AREA" || (upper === "A" && el.href)) {
-          return true;
-        }
-      }
-    }));
-  },
-  get forms() {
-    return this.getElementsByTagName('FORM');
-  },
-  get anchors() {
-    return this.getElementsByTagName('A');
-  },
-  open  : function() {
-    this._childNodes = [];
-    this._documentElement = null;
-    this._modified();
-  },
-  close : function() {
-    this._queue.resume();
-    // Set the readyState to 'complete' once all resources are loaded.
-    // As a side-effect the document's load-event will be dispatched.
-    core.resourceLoader.enqueue(this, function() {
-      this.readyState = 'complete';
-      var ev = this.createEvent('HTMLEvents');
-      ev.initEvent('DOMContentLoaded', false, false);
-      this.dispatchEvent(ev);
-    })(null, true);
-  },
-
-  // document.write is defined in browser/index.js.
-
-  writeln : function(text) {
-    this.write(text + '\n');
-  },
-
-  getElementsByName : function(elementName) {
-    return new core.HTMLCollection(this, core.mapper(this, function(el) {
-      return (el.getAttribute && el.getAttribute("name") === elementName);
-    }));
-  },
-
-  get title() {
-    var head = this.head,
-      title = head ? firstChild(head, 'TITLE') : null;
-    return title ? title.textContent : '';
-  },
-
-  set title(val) {
-    var title = firstChild(this.head, 'TITLE');
-    if (!title) {
-      title = this.createElement('TITLE');
-      var head = this.head;
-      if (!head) {
-        head = this.createElement('HEAD');
-        this.documentElement.insertBefore(head, this.documentElement.firstChild);
-      }
-      head.appendChild(title);
-    }
-    title.textContent = val;
-  },
-
-  get head() {
-    return firstChild(this.documentElement, 'HEAD');
-  },
-
-  set head(unused) { /* noop */ },
-
-  get body() {
-    var body = firstChild(this.documentElement, 'BODY');
-    if (!body) {
-      body = firstChild(this.documentElement, 'FRAMESET');
-    }
-    return body;
-  },
-
-  _cookie : "",
-  get cookie() {
-    var cookies = Array.isArray(this._cookie) ?
-      this._cookie :
-      (this._cookie && this._cookie.length > 0 ? [this._cookie] : []);
-
-    return cookies.map(function (x) {
-      return x.split(';')[0];
-    }).join('; ');
-  },
-  set cookie(val) {
-    if (val == null) return val;
-    var key = val.split('=')[0];
-    var cookies = Array.isArray(this._cookie) ?
-      this._cookie :
-      (this._cookie && this._cookie.length > 0 ? [this._cookie] : []);
-    for (var i = 0; i < cookies.length; i++) {
-      if (cookies[i].lastIndexOf(key + '=', 0) === 0) {
-        cookies[i] = val;
-        key = null;
-        break;
-      }
-    }
-    if (key) {
-      cookies.push(val);
-    }
-    if (cookies.length === 1) {
-      this._cookie = cookies[0];
-    } else {
-      this._cookie = cookies;
-    }
-    return val;
-  }
-});
-
-define('HTMLElement', {
-  parentClass: core.Element,
-  proto : {
-    // Add default event behavior (click link to navigate, click button to submit
-    // form, etc). We start by wrapping dispatchEvent so we can forward events to
-    // the element's _eventDefault function (only events that did not incur
-    // preventDefault).
-    dispatchEvent : function (event) {
-      var outcome = core.Node.prototype.dispatchEvent.call(this, event)
-
-      if (!event._preventDefault     &&
-          event.target._eventDefaults[event.type] &&
-          typeof event.target._eventDefaults[event.type] === 'function')
-      {
-        event.target._eventDefaults[event.type](event)
-      }
-      return outcome;
-    },
-    getBoundingClientRect: function () {
-      return {
-        bottom: 0,
-        height: 0,
-        left: 0,
-        right: 0,
-        top: 0,
-        width: 0
-      };
-    },
-    focus : function() {
-      this._ownerDocument.activeElement = this;
-    },
-    blur : function() {
-      this._ownerDocument.activeElement = this._ownerDocument.body;
-    },
-    _eventDefaults : {}
-  },
-  attributes: [
-    'id',
-    'title',
-    'lang',
-    'dir',
-    {prop: 'className', attr: 'class', normalize: function(s) { return s || ''; }}
-  ]
-});
-
-core.Document.prototype._defaultElementBuilder = function(document, tagName) {
-  return new core.HTMLElement(document, tagName);
-};
-
-// http://www.whatwg.org/specs/web-apps/current-work/#category-listed
-var listedElements = /button|fieldset|input|keygen|object|select|textarea/i;
-
-define('HTMLFormElement', {
-  tagName: 'FORM',
-  proto: {
-    _descendantAdded: function(parent, child) {
-      var form = this;
-      core.visitTree(child, function(el) {
-        if (typeof el._changedFormOwner === 'function') {
-          el._changedFormOwner(form);
-        }
-      });
-
-      core.HTMLElement.prototype._descendantAdded.apply(this, arguments);
-    },
-    _descendantRemoved: function(parent, child) {
-      core.visitTree(child, function(el) {
-        if (typeof el._changedFormOwner === 'function') {
-          el._changedFormOwner(null);
-        }
-      });
-
-      core.HTMLElement.prototype._descendantRemoved.apply(this, arguments);
-    },
-    get elements() {
-      return new core.HTMLCollection(this._ownerDocument, core.mapper(this, function(e) {
-        return listedElements.test(e.nodeName) ; // TODO exclude <input type="image">
-      }));
-    },
-    get length() {
-      return this.elements.length;
-    },
-    _dispatchSubmitEvent: function() {
-      var ev = this._ownerDocument.createEvent('HTMLEvents');
-      ev.initEvent('submit', true, true);
-      if (!this.dispatchEvent(ev)) {
-        this.submit();
-      };
-    },
-    submit: function() {
-    },
-    reset: function() {
-      this.elements._toArray().forEach(function(el) {
-        if (typeof el._formReset === 'function') {
-          el._formReset();
-        }
-      });
-    }
-  },
-  attributes: [
-    'name',
-    {prop: 'acceptCharset', attr: 'accept-charset'},
-    'action',
-    'enctype',
-    'method',
-    'target'
-  ]
-});
-
-define('HTMLLinkElement', {
-  tagName: 'LINK',
-  proto: {
-    get href() {
-      return core.resourceLoader.resolve(this._ownerDocument, this.getAttribute('href'));
-    }
-  },
-  attributes: [
-    {prop: 'disabled', type: 'boolean'},
-    'charset',
-    'href',
-    'hreflang',
-    'media',
-    'rel',
-    'rev',
-    'target',
-    'type'
-  ]
-});
-
-define('HTMLMetaElement', {
-  tagName: 'META',
-  attributes: [
-    'content',
-    {prop: 'httpEquiv', attr: 'http-equiv'},
-    'name',
-    'scheme'
-  ]
-});
-
-define('HTMLHtmlElement', {
-  tagName: 'HTML',
-  attributes: [
-    'version'
-  ]
-});
-
-define('HTMLHeadElement', {
-  tagName: 'HEAD',
-  attributes: [
-    'profile'
-  ]
-});
-
-define('HTMLTitleElement', {
-  tagName: 'TITLE',
-  proto: {
-    get text() {
-      return this.innerHTML;
-    },
-    set text(s) {
-      this.innerHTML = s;
-    }
-  }
-});
-
-define('HTMLBaseElement', {
-  tagName: 'BASE',
-  attributes: [
-    'href',
-    'target'
-  ]
-});
-
-
-//**Deprecated**
-define('HTMLIsIndexElement', {
-  tagName : 'ISINDEX',
-  parentClass : core.Element,
-  proto : {
-    get form() {
-      return closest(this, 'FORM');
-    }
-  },
-  attributes : [
-    'prompt'
-  ]
-});
-
-
-define('HTMLStyleElement', {
-  tagName: 'STYLE',
-  attributes: [
-    {prop: 'disabled', type: 'boolean'},
-    'media',
-    'type',
-  ]
-});
-
-define('HTMLBodyElement', {
-  proto: (function() {
-    var proto = {};
-    // The body element's "traditional" event handlers are proxied to the
-    // window object.
-    // See: http://www.whatwg.org/specs/web-apps/current-work/#the-body-element
-    ['onafterprint', 'onbeforeprint', 'onbeforeunload', 'onblur', 'onerror',
-     'onfocus', 'onhashchange', 'onload', 'onmessage', 'onoffline', 'ononline',
-     'onpagehide', 'onpageshow', 'onpopstate', 'onresize', 'onscroll',
-     'onstorage', 'onunload'].forEach(function (name) {
-      defineSetter(proto, name, function (handler) {
-        this._ownerDocument.parentWindow[name] = handler;
-      });
-      defineGetter(proto, name, function () {
-        return this._ownerDocument.parentWindow[name];
-      });
-    });
-    return proto;
-  })(),
-  tagName: 'BODY',
-  attributes: [
-    'aLink',
-    'background',
-    'bgColor',
-    'link',
-    'text',
-    'vLink'
-  ]
-});
-
-define('HTMLSelectElement', {
-  tagName: 'SELECT',
-  proto: {
-    _formReset: function() {
-      this.options._toArray().forEach(function(option, i) {
-        option._selectedness = option.defaultSelected;
-        option._dirtyness = false;
-      });
-      this._askedForAReset();
-    },
-    _askedForAReset: function() {
-      if (this.hasAttribute('multiple')) {
-        return;
-      }
-
-      var options = this.options._toArray();
-      var selected = options.filter(function(option){
-        return option._selectedness;
-      });
-
-      // size = 1 is default if not multiple
-      if ((!this.size || this.size === 1) && !selected.length) {
-        // select the first option that is not disabled
-        for (var i = 0; i < options.length; ++i) {
-          var option = options[i];
-          var disabled = option.disabled;
-          if (option._parentNode &&
-              option._parentNode.nodeName.toUpperCase() === 'OPTGROUP' &&
-              option._parentNode.disabled) {
-            disabled = true;
-          }
-
-          if (!disabled) {
-            // (do not set dirty)
-            option._selectedness = true;
-            break;
-          }
-        }
-      } else if (selected.length >= 2) {
-        // select the last selected option
-        selected.forEach(function(option, index) {
-          option._selectedness = index === selected.length - 1;
-        });
-      }
-    },
-    _descendantAdded: function(parent, child) {
-      if (child.nodeType === core.Node.ELEMENT_NODE) {
-        this._askedForAReset();
-      }
-
-      core.HTMLElement.prototype._descendantAdded.apply(this, arguments);
-    },
-    _descendantRemoved: function(parent, child) {
-      if (child.nodeType === core.Node.ELEMENT_NODE) {
-        this._askedForAReset();
-      }
-
-      core.HTMLElement.prototype._descendantRemoved.apply(this, arguments);
-    },
-    _attrModified: function(name, value) {
-      if (name === 'multiple' || name === 'size') {
-        this._askedForAReset();
-      }
-      core.HTMLElement.prototype._attrModified.apply(this, arguments);
-    },
-    get options() {
-      return new core.HTMLOptionsCollection(this, core.mapper(this, function(n) {
-        return n.nodeName === 'OPTION';
-      }));
-    },
-
-    get length() {
-      return this.options.length;
-    },
-
-    get selectedIndex() {
-      return this.options._toArray().reduceRight(function(prev, option, i) {
-        return option.selected ? i : prev;
-      }, -1);
-    },
-
-    set selectedIndex(index) {
-      this.options._toArray().forEach(function(option, i) {
-        option.selected = i === index;
-      });
-    },
-
-    get value() {
-      var i = this.selectedIndex;
-      if (this.options.length && (i === -1)) {
-        i = 0;
-      }
-      if (i === -1) {
-        return '';
-      }
-      return this.options[i].value;
-    },
-
-    set value(val) {
-      var self = this;
-      this.options._toArray().forEach(function(option) {
-        if (option.value === val) {
-          option.selected = true;
-        } else {
-          if (!self.hasAttribute('multiple')) {
-            // Remove the selected bit from all other options in this group
-            // if the multiple attr is not present on the select
-            option.selected = false;
-          }
-        }
-      });
-    },
-
-    get form() {
-      return closest(this, 'FORM');
-    },
-
-    get type() {
-      return this.multiple ? 'select-multiple' : 'select-one';
-    },
-
-    add: function(opt, before) {
-      if (before) {
-        this.insertBefore(opt, before);
-      }
-      else {
-        this.appendChild(opt);
-      }
-    },
-
-    remove: function(index) {
-      var opts = this.options._toArray();
-      if (index >= 0 && index < opts.length) {
-        var el = opts[index];
-        el._parentNode.removeChild(el);
-      }
-    }
-
-  },
-  attributes: [
-    {prop: 'disabled', type: 'boolean'},
-    {prop: 'multiple', type: 'boolean'},
-    'name',
-    {prop: 'size', type: 'long'},
-    {prop: 'tabIndex', type: 'long'},
-  ]
-});
-
-define('HTMLOptGroupElement', {
-  tagName: 'OPTGROUP',
-  attributes: [
-    {prop: 'disabled', type: 'boolean'},
-    'label'
-  ]
-});
-
-define('HTMLOptionElement', {
-  tagName: 'OPTION',
-  proto: {
-    // whenever selectedness is set to true, make sure all
-    // other options set selectedness to false
-    _selectedness: false,
-    _dirtyness: false,
-    _removeOtherSelectedness: function() {
-      //Remove the selectedness flag from all other options in this select
-      var select = this._selectNode;
-
-      if (select && !select.multiple) {
-        var o = select.options;
-        for (var i = 0; i < o.length; i++) {
-          if (o[i] !== this) {
-            o[i]._selectedness = false;
-          }
-        }
-      }
-    },
-    _askForAReset: function() {
-      var select = this._selectNode;
-      if (select) {
-        select._askedForAReset();
-      }
-    },
-    _attrModified: function(name, value) {
-      if (!this._dirtyness && name === 'selected') {
-        this._selectedness = this.defaultSelected;
-        if (this._selectedness) {
-          this._removeOtherSelectedness();
-        }
-        this._askForAReset();
-      }
-      core.HTMLElement.prototype._attrModified.apply(this, arguments);
-    },
-    get _selectNode() {
-      var select = this._parentNode;
-      if (!select) return null;
-      if (select.nodeName.toUpperCase() !== 'SELECT') {
-        select = select._parentNode;
-        if (!select) return null;
-        if (select.nodeName.toUpperCase() !== 'SELECT') return null;
-      }
-      return select;
-    },
-    get form() {
-      return closest(this, 'FORM');
-    },
-    get defaultSelected() {
-      return this.getAttribute('selected') !== null;
-    },
-    set defaultSelected(s) {
-      if (s) this.setAttribute('selected', 'selected');
-      else this.removeAttribute('selected');
-    },
-    get text() {
-      return this.innerHTML;
-    },
-    get value() {
-      return (this.hasAttribute('value')) ? this.getAttribute('value') : this.innerHTML;
-    },
-    set value(val) {
-      this.setAttribute('value', val);
-    },
-    get index() {
-      return closest(this, 'SELECT').options._toArray().indexOf(this);
-    },
-    get selected() {
-      return this._selectedness;
-    },
-    set selected(s) {
-      this._dirtyness = true;
-      this._selectedness = !!s;
-      if (this._selectedness) {
-        this._removeOtherSelectedness();
-      }
-      this._askForAReset();
-    }
-  },
-  attributes: [
-    {prop: 'disabled', type: 'boolean'},
-    'label'
-  ]
-});
-
-define('HTMLInputElement', {
-  tagName: 'INPUT',
-  init: function() {
-    if (!this.type) {
-      this.type = 'text';
-    }
-  },
-  proto: {
-    _value: null,
-    _dirtyValue: false,
-    _checkedness: false,
-    _dirtyCheckedness: false,
-    _attrModified: function(name, value) {
-      if (!this._dirtyValue && name === 'value') {
-        this._value = this.defaultValue;
-      }
-      if (!this._dirtyCheckedness && name === 'checked') {
-        this._checkedness = this.defaultChecked;
-        if (this._checkedness) {
-          this._removeOtherRadioCheckedness();
-        }
-      }
-
-      if (name === 'name' || name === 'type') {
-        if (this._checkedness) {
-          this._removeOtherRadioCheckedness();
-        }
-      }
-
-      core.HTMLElement.prototype._attrModified.apply(this, arguments);
-    },
-    _formReset: function() {
-      this._value = this.defaultValue;
-      this._dirtyValue = false;
-      this._checkedness = this.defaultChecked;
-      this._dirtyCheckedness = false;
-      if (this._checkedness) {
-        this._removeOtherRadioCheckedness();
-      }
-    },
-    _changedFormOwner: function(newForm) {
-      if (this._checkedness) {
-        this._removeOtherRadioCheckedness();
-      }
-    },
-    _removeOtherRadioCheckedness: function() {
-      var root = this._radioButtonGroupRoot;
-      if (!root) {
-        return;
-      }
-
-      var name = this.name.toLowerCase();
-      var radios = new core.HTMLCollection(this, core.mapper(root, function(el) {
-        return el.type === 'radio' &&
-               el.name &&
-               el.name.toLowerCase() === name &&
-               el._radioButtonGroupRoot === root;
-      }));
-
-      radios._toArray().forEach(function(radio) {
-        if (radio !== this) {
-          radio._checkedness = false;
-        }
-      }, this);
-    },
-    get _radioButtonGroupRoot() {
-      if (this.type !== 'radio' || !this.name) {
-        return null;
-      }
-
-      var e = this._parentNode;
-      while (e) {
-        // root node of this home sub tree
-        // or the form element we belong to
-        if (!e._parentNode || e.nodeName.toUpperCase() === 'FORM') {
-          return e;
-        }
-        e = e._parentNode;
-      }
-      return null;
-    },
-    get form() {
-      return closest(this, 'FORM');
-    },
-    get defaultValue() {
-      var val = this.getAttribute('value');
-      return val !== null ? val : "";
-    },
-    set defaultValue(val) {
-      this.setAttribute('value', String(val));
-    },
-    get defaultChecked() {
-      return this.getAttribute('checked') !== null;
-    },
-    set defaultChecked(s) {
-      if (s) this.setAttribute('checked', 'checked');
-      else this.removeAttribute('checked');
-    },
-    get checked() {
-      return this._checkedness;
-    },
-    set checked(checked) {
-      this._checkedness = !!checked;
-      this._dirtyCheckedness = true;
-      if (this._checkedness) {
-        this._removeOtherRadioCheckedness();
-      }
-    },
-    get value() {
-      if (this._value === null) {
-        return '';
-      }
-      return this._value;
-    },
-    set value(val) {
-      this._dirtyValue = true;
-      if (val === null) {
-        this._value = null;
-      } else {
-        this._value = String(val);
-      }
-    },
-    get type() {
-        var type = this.getAttribute('type');
-        return type ? type : 'text';
-    },
-    set type(type) {
-        this.setAttribute('type', type);
-    },
-    select: function() {
-    },
-
-    _dispatchClickEvent: function() {
-      var event = this._ownerDocument.createEvent("HTMLEvents");
-      event.initEvent("click", true, true);
-      this.dispatchEvent(event);
-    },
-
-    click: function() {
-      if (this.type === 'checkbox') {
-        this.checked = !this.checked;
-      }
-      else if (this.type === 'radio') {
-        this.checked = true;
-      }
-      else if (this.type === 'submit') {
-        var form = this.form;
-        if (form) {
-          form._dispatchSubmitEvent();
-        }
-      }
-      this._dispatchClickEvent();
-    }
-  },
-  attributes: [
-    'accept',
-    'accessKey',
-    'align',
-    'alt',
-    {prop: 'disabled', type: 'boolean'},
-    {prop: 'maxLength', type: 'long'},
-    'name',
-    {prop: 'readOnly', type: 'boolean'},
-    {prop: 'size', type: 'long'},
-    'src',
-    {prop: 'tabIndex', type: 'long'},
-    {prop: 'type', normalize: function(val) {
-        return val ? val.toLowerCase() : 'text';
-    }},
-    'useMap'
-  ]
-});
-
-define('HTMLTextAreaElement', {
-  tagName: 'TEXTAREA',
-  proto: {
-    _apiValue: null,
-    _dirtyValue: false,
-    // "raw value" and "value" are not used here because jsdom has no GUI
-    _formReset: function() {
-      this._apiValue = null;
-      this._dirtyValue = false;
-    },
-    get form() {
-      return closest(this, 'FORM');
-    },
-    get defaultValue() {
-      return this.textContent;
-    },
-    set defaultValue(val) {
-      this.textContent = val;
-    },
-    get value() {
-      // The WHATWG specifies that when "textContent" changes, the "raw value"
-      // (just the API value in jsdom) must also be updated.
-      // This slightly different solution has identical results, but is a lot less complex.
-      if (this._dirtyValue) {
-        if (this._apiValue === null) {
-          return '';
-        }
-        return this._apiValue;
-      }
-
-      var val = this.defaultValue;
-      val = val.replace(/\r\n|\r/g, '\n'); // API value normalizes line breaks per WHATWG
-      return val;
-    },
-    set value(val) {
-      if (val) {
-        val = val.replace(/\r\n|\r/g, '\n'); // API value normalizes line breaks per WHATWG
-      }
-
-      this._dirtyValue = true;
-      this._apiValue = val;
-    },
-    get textLength() {
-      return this.value.length; // code unit length (16 bit)
-    },
-    get type() {
-      return 'textarea';
-    },
-    select: function() {
-    }
-  },
-  attributes: [
-    'accessKey',
-    {prop: 'cols', type: 'long'},
-    {prop: 'disabled', type: 'boolean'},
-    {prop: 'maxLength', type: 'long'},
-    'name',
-    {prop: 'readOnly', type: 'boolean'},
-    {prop: 'rows', type: 'long'},
-    {prop: 'tabIndex', type: 'long'}
-  ]
-});
-
-define('HTMLButtonElement', {
-  tagName: 'BUTTON',
-  proto: {
-    get form() {
-      return closest(this, 'FORM');
-    }
-  },
-  attributes: [
-    'accessKey',
-    {prop: 'disabled', type: 'boolean'},
-    'name',
-    {prop: 'tabIndex', type: 'long'},
-    'type',
-    'value'
-  ]
-});
-
-define('HTMLLabelElement', {
-  tagName: 'LABEL',
-  proto: {
-    get form() {
-      return closest(this, 'FORM');
-    }
-  },
-  attributes: [
-    'accessKey',
-    {prop: 'htmlFor', attr: 'for'}
-  ]
-});
-
-define('HTMLFieldSetElement', {
-  tagName: 'FIELDSET',
-  proto: {
-    get form() {
-      return closest(this, 'FORM');
-    }
-  }
-});
-
-define('HTMLLegendElement', {
-  tagName: 'LEGEND',
-  proto: {
-    get form() {
-      return closest(this, 'FORM');
-    }
-  },
-  attributes: [
-    'accessKey',
-    'align'
-  ]
-});
-
-define('HTMLUListElement', {
-  tagName: 'UL',
-  attributes: [
-    {prop: 'compact', type: 'boolean'},
-    'type'
-  ]
-});
-
-define('HTMLOListElement', {
-  tagName: 'OL',
-  attributes: [
-    {prop: 'compact', type: 'boolean'},
-    {prop: 'start', type: 'long'},
-    'type'
-  ]
-});
-
-define('HTMLDListElement', {
-  tagName: 'DL',
-  attributes: [
-    {prop: 'compact', type: 'boolean'}
-  ]
-});
-
-define('HTMLDirectoryElement', {
-  tagName: 'DIR',
-  attributes: [
-    {prop: 'compact', type: 'boolean'}
-  ]
-});
-
-define('HTMLMenuElement', {
-  tagName: 'MENU',
-  attributes: [
-    {prop: 'compact', type: 'boolean'}
-  ]
-});
-
-define('HTMLLIElement', {
-  tagName: 'LI',
-  attributes: [
-    'type',
-    {prop: 'value', type: 'long'}
-  ]
-});
-
-define('HTMLCanvasElement', {
-  tagName: 'CANVAS',
-  attributes: [
-    'align'
-  ],
-  elementBuilder: function (element) {
-    // require node-canvas and catch the error if it blows up
-    try {
-      var canvas = new (require('canvas'))(0,0);
-      for (var attr in element) {
-        if (!canvas[attr]) {
-          canvas[attr] = element[attr];
-        }
-      }
-      return canvas;
-    } catch (e) {
-      return element;
-    }
-  }
-});
-
-define('HTMLDivElement', {
-  tagName: 'DIV',
-  attributes: [
-    'align'
-  ],
-  proto: {
-    toString: function() { return '[object HTMLDivElement]'; }
-  }
-});
-
-define('HTMLParagraphElement', {
-  tagName: 'P',
-  attributes: [
-    'align'
-  ]
-});
-
-define('HTMLHeadingElement', {
-  tagNames: ['H1','H2','H3','H4','H5','H6'],
-  attributes: [
-    'align'
-  ]
-});
-
-define('HTMLQuoteElement', {
-  tagNames: ['Q','BLOCKQUOTE'],
-  attributes: [
-    'cite'
-  ]
-});
-
-define('HTMLPreElement', {
-  tagName: 'PRE',
-  attributes: [
-    {prop: 'width', type: 'long'}
-  ]
-});
-
-define('HTMLBRElement', {
-  tagName: 'BR',
-  attributes: [
-    'clear'
-  ]
-});
-
-define('HTMLBaseFontElement', {
-  tagName: 'BASEFONT',
-  attributes: [
-    'color',
-    'face',
-    {prop: 'size', type: 'long'}
-  ]
-});
-
-define('HTMLFontElement', {
-  tagName: 'FONT',
-  attributes: [
-    'color',
-    'face',
-    'size'
-  ]
-});
-
-define('HTMLHRElement', {
-  tagName: 'HR',
-  attributes: [
-    'align',
-    {prop: 'noShade', type: 'boolean'},
-    'size',
-    'width'
-  ]
-});
-
-define('HTMLModElement', {
-  tagNames: ['INS', 'DEL'],
-  attributes: [
-    'cite',
-    'dateTime'
-  ]
-});
-
-define('HTMLAnchorElement', {
-  tagName: 'A',
-
-  proto: {
-    get href() {
-      return core.resourceLoader.resolve(this._ownerDocument, this.getAttribute('href'));
-    },
-    get hostname() {
-      return URL.parse(this.href).hostname || '';
-    },
-    get host() {
-      return URL.parse(this.href).host || '';
-    },
-    get origin() {
-      var proto = URL.parse(this.href).protocol;
-
-      if (proto !== undefined && proto !== null) {
-        proto += '//';
-      }
-
-      return proto + URL.parse(this.href).host || '';
-    },
-    get port() {
-      return URL.parse(this.href).port || '';
-    },
-    get protocol() {
-      var protocol = URL.parse(this.href).protocol;
-      return (protocol == null) ? ':' : protocol;
-    },
-    get password() {
-      var auth = URL.parse(this.href).auth;
-      return auth.substr(auth.indexOf(':') + 1);
-    },
-    get pathname() {
-      return URL.parse(this.href).pathname || '';
-    },
-    get username() {
-      var auth = URL.parse(this.href).auth;
-      return auth.substr(0, auth.indexOf(':'));
-    },
-    get search() {
-      return URL.parse(this.href).search || '';
-    },
-    get hash() {
-      return URL.parse(this.href).hash || '';
-    }
-  },
-  attributes: [
-    'accessKey',
-    'charset',
-    'coords',
-    {prop: 'href', type: 'string', read: false},
-    'hreflang',
-    'name',
-    'rel',
-    'rev',
-    'shape',
-    {prop: 'tabIndex', type: 'long'},
-    'target',
-    'type'
-  ]
-});
-
-define('HTMLImageElement', {
-  tagName: 'IMG',
-  proto: {
-    _attrModified: function(name, value, oldVal) {
-      if (name == 'src' && value !== oldVal) {
-        core.resourceLoader.enqueue(this, function() {})();
-      }
-    },
-    get src() {
-      return core.resourceLoader.resolve(this._ownerDocument, this.getAttribute('src'));
-    }
-  },
-  attributes: [
-    'name',
-    'align',
-    'alt',
-    'border',
-    {prop: 'height', type: 'long'},
-    {prop: 'hspace', type: 'long'},
-    {prop: 'isMap', type: 'boolean'},
-    'longDesc',
-    {prop: 'src', type: 'string', read: false},
-    'useMap',
-    {prop: 'vspace', type: 'long'},
-    {prop: 'width', type: 'long'}
-  ]
-});
-
-define('HTMLObjectElement', {
-  tagName: 'OBJECT',
-  proto: {
-    get form() {
-      return closest(this, 'FORM');
-    },
-    get contentDocument() {
-      return null;
-    }
-  },
-  attributes: [
-    'code',
-    'align',
-    'archive',
-    'border',
-    'codeBase',
-    'codeType',
-    'data',
-    {prop: 'declare', type: 'boolean'},
-    {prop: 'height',  type: 'long'},
-    {prop: 'hspace',  type: 'long'},
-    'name',
-    'standby',
-    {prop: 'tabIndex', type: 'long'},
-    'type',
-    'useMap',
-    {prop: 'vspace', type: 'long'},
-    {prop: 'width', type: 'long'}
-  ]
-});
-
-define('HTMLParamElement', {
-  tagName: 'PARAM',
-  attributes: [
-    'name',
-    'type',
-    'value',
-    'valueType'
-  ]
-});
-
-define('HTMLAppletElement', {
-  tagName: 'APPLET',
-  attributes: [
-    'align',
-    'alt',
-    'archive',
-    'code',
-    'codeBase',
-    'height',
-    {prop: 'hspace', type: 'long'},
-    'name',
-    'object',
-    {prop: 'vspace', type: 'long'},
-    'width'
-  ]
-});
-
-define('HTMLMapElement', {
-  tagName: 'MAP',
-  proto: {
-    get areas() {
-      return this.getElementsByTagName("AREA");
-    }
-  },
-  attributes: [
-    'name'
-  ]
-});
-
-define('HTMLAreaElement', {
-  tagName: 'AREA',
-  attributes: [
-    'accessKey',
-    'alt',
-    'coords',
-    'href',
-    {prop: 'noHref', type: 'boolean'},
-    'shape',
-    {prop: 'tabIndex', type: 'long'},
-    'target'
-  ]
-});
-
-define('HTMLScriptElement', {
-  tagName: 'SCRIPT',
-  init: function() {
-    this.addEventListener('DOMNodeInsertedIntoDocument', function() {
-      if (this.src) {
-        core.resourceLoader.load(this, this.src, this._eval);
-      }
-      else {
-        var src = this.sourceLocation || {},
-            filename = src.file || this._ownerDocument.URL;
-
-        if (src) {
-          filename += ':' + src.line + ':' + src.col;
-        }
-        filename += '<script>';
-
-        core.resourceLoader.enqueue(this, this._eval, filename)(null, this.text);
-      }
-    });
-  },
-  proto: {
-    _eval: function(text, filename) {
-      if (this._ownerDocument.implementation._hasFeature("ProcessExternalResources", "script") &&
-          this.language                                                                      &&
-          core.languageProcessors[this.language])
-      {
-        this._ownerDocument._writeAfterElement = this;
-        core.languageProcessors[this.language](this, text, filename);
-        delete this._ownerDocument._writeAfterElement;
-      }
-    },
-    get language() {
-      var type = this.type || "text/javascript";
-      return type.split("/").pop().toLowerCase();
-    },
-    get text() {
-      var i=0, children = this._childNodes, l = children.length, ret = [];
-
-      for (i; i<l; i++) {
-        ret.push(children[i].nodeValue);
-      }
-
-      return ret.join("");
-    },
-    set text(text) {
-      while (this._childNodes.length) {
-        this.removeChild(this._childNodes[this._childNodes.length-1]);
-      }
-      this.appendChild(this._ownerDocument.createTextNode(text));
-    }
-  },
-  attributes : [
-    {prop: 'defer', 'type': 'boolean'},
-    'htmlFor',
-    'event',
-    'charset',
-    'type',
-    'src'
-  ]
-})
-
-define('HTMLTableElement', {
-  tagName: 'TABLE',
-  proto: {
-    get caption() {
-      return firstChild(this, 'CAPTION');
-    },
-    get tHead() {
-      return firstChild(this, 'THEAD');
-    },
-    get tFoot() {
-      return firstChild(this, 'TFOOT');
-    },
-    get rows() {
-      if (!this._rows) {
-        var table = this;
-        this._rows = new core.HTMLCollection(this._ownerDocument, function() {
-          var sections = [table.tHead].concat(table.tBodies._toArray(), table.tFoot).filter(function(s) { return !!s });
-
-          if (sections.length === 0) {
-            return core.mapDOMNodes(table, false, function(el) {
-              return el.tagName === 'TR';
-            });
-          }
-
-          return sections.reduce(function(prev, s) {
-            return prev.concat(s.rows._toArray());
-          }, []);
-
-        });
-      }
-      return this._rows;
-    },
-    get tBodies() {
-      if (!this._tBodies) {
-        this._tBodies = descendants(this, 'TBODY', false);
-      }
-      return this._tBodies;
-    },
-    createTHead: function() {
-      var el = this.tHead;
-      if (!el) {
-        el = this._ownerDocument.createElement('THEAD');
-        this.appendChild(el);
-      }
-      return el;
-    },
-    deleteTHead: function() {
-      var el = this.tHead;
-      if (el) {
-        el._parentNode.removeChild(el);
-      }
-    },
-    createTFoot: function() {
-      var el = this.tFoot;
-      if (!el) {
-        el = this._ownerDocument.createElement('TFOOT');
-        this.appendChild(el);
-      }
-      return el;
-    },
-    deleteTFoot: function() {
-      var el = this.tFoot;
-      if (el) {
-        el._parentNode.removeChild(el);
-      }
-    },
-    createCaption: function() {
-      var el = this.caption;
-      if (!el) {
-        el = this._ownerDocument.createElement('CAPTION');
-        this.appendChild(el);
-      }
-      return el;
-    },
-    deleteCaption: function() {
-      var c = this.caption;
-      if (c) {
-        c._parentNode.removeChild(c);
-      }
-    },
-    insertRow: function(index) {
-      var tr = this._ownerDocument.createElement('TR');
-      if (this._childNodes.length === 0) {
-        this.appendChild(this._ownerDocument.createElement('TBODY'));
-      }
-      var rows = this.rows._toArray();
-      if (index < -1 || index > rows.length) {
-        throw new core.DOMException(core.INDEX_SIZE_ERR);
-      }
-      if (index === -1 || (index === 0 && rows.length === 0)) {
-        this.tBodies.item(0).appendChild(tr);
-      }
-      else if (index === rows.length) {
-        var ref = rows[index-1];
-        ref._parentNode.appendChild(tr);
-      }
-      else {
-        var ref = rows[index];
-        ref._parentNode.insertBefore(tr, ref);
-      }
-      return tr;
-    },
-    deleteRow: function(index) {
-      var rows = this.rows._toArray(), l = rows.length;
-      if (index === -1) {
-        index = l-1;
-      }
-      if (index < 0 || index >= l) {
-        throw new core.DOMException(core.INDEX_SIZE_ERR);
-      }
-      var tr = rows[index];
-      tr._parentNode.removeChild(tr);
-    }
-  },
-  attributes: [
-    'align',
-    'bgColor',
-    'border',
-    'cellPadding',
-    'cellSpacing',
-    'frame',
-    'rules',
-    'summary',
-    'width'
-  ]
-});
-
-define('HTMLTableCaptionElement', {
-  tagName: 'CAPTION',
-  attributes: [
-    'align'
-  ]
-});
-
-define('HTMLTableColElement', {
-  tagNames: ['COL','COLGROUP'],
-  attributes: [
-    'align',
-    {prop: 'ch', attr: 'char'},
-    {prop: 'chOff', attr: 'charoff'},
-    {prop: 'span', type: 'long'},
-    'vAlign',
-    'width',
-  ]
-});
-
-define('HTMLTableSectionElement', {
-  tagNames: ['THEAD','TBODY','TFOOT'],
-  proto: {
-    get rows() {
-      if (!this._rows) {
-        this._rows = descendants(this, 'TR', false);
-      }
-      return this._rows;
-    },
-    insertRow: function(index) {
-      var tr = this._ownerDocument.createElement('TR');
-      var rows = this.rows._toArray();
-      if (index < -1 || index > rows.length) {
-        throw new core.DOMException(core.INDEX_SIZE_ERR);
-      }
-      if (index === -1 || index === rows.length) {
-        this.appendChild(tr);
-      }
-      else {
-        var ref = rows[index];
-        this.insertBefore(tr, ref);
-      }
-      return tr;
-    },
-    deleteRow: function(index) {
-      var rows = this.rows._toArray();
-      if (index === -1) {
-        index = rows.length-1;
-      }
-      if (index < 0 || index >= rows.length) {
-        throw new core.DOMException(core.INDEX_SIZE_ERR);
-      }
-      var tr = this.rows[index];
-      this.removeChild(tr);
-    }
-  },
-  attributes: [
-    'align',
-    {prop: 'ch', attr: 'char'},
-    {prop: 'chOff', attr: 'charoff'},
-    {prop: 'span', type: 'long'},
-    'vAlign',
-    'width',
-  ]
-});
-
-define('HTMLTableRowElement', {
-  tagName: 'TR',
-  proto: {
-    get cells() {
-      if (!this._cells) {
-        this._cells = new core.HTMLCollection(this, core.mapper(this, function(n) {
-          return n.nodeName === 'TD' || n.nodeName === 'TH';
-        }, false));
-      }
-      return this._cells;
-    },
-    get rowIndex() {
-      var table = closest(this, 'TABLE');
-      return table ? table.rows._toArray().indexOf(this) : -1;
-    },
-
-    get sectionRowIndex() {
-      return this._parentNode.rows._toArray().indexOf(this);
-    },
-    insertCell: function(index) {
-      var td = this._ownerDocument.createElement('TD');
-      var cells = this.cells._toArray();
-      if (index < -1 || index > cells.length) {
-        throw new core.DOMException(core.INDEX_SIZE_ERR);
-      }
-      if (index === -1 || index === cells.length) {
-        this.appendChild(td);
-      }
-      else {
-        var ref = cells[index];
-        this.insertBefore(td, ref);
-      }
-      return td;
-    },
-    deleteCell: function(index) {
-      var cells = this.cells._toArray();
-      if (index === -1) {
-        index = cells.length-1;
-      }
-      if (index < 0 || index >= cells.length) {
-        throw new core.DOMException(core.INDEX_SIZE_ERR);
-      }
-      var td = this.cells[index];
-      this.removeChild(td);
-    }
-  },
-  attributes: [
-    'align',
-    'bgColor',
-    {prop: 'ch', attr: 'char'},
-    {prop: 'chOff', attr: 'charoff'},
-    'vAlign'
-  ]
-});
-
-define('HTMLTableCellElement', {
-  tagNames: ['TH','TD'],
-  proto: {
-    _headers: null,
-    set headers(h) {
-      if (h === '') {
-        //Handle resetting headers so the dynamic getter returns a query
-        this._headers = null;
-        return;
-      }
-      if (!(h instanceof Array)) {
-        h = [h];
-      }
-      this._headers = h;
-    },
-    get headers() {
-      if (this._headers) {
-        return this._headers.join(' ');
-      }
-      var cellIndex = this.cellIndex,
-          headings  = [],
-          siblings  = this._parentNode.getElementsByTagName(this.tagName);
-
-      for (var i=0; i<siblings.length; i++) {
-        if (siblings.item(i).cellIndex >= cellIndex) {
-          break;
-        }
-        headings.push(siblings.item(i).id);
-      }
-      this._headers = headings;
-      return headings.join(' ');
-    },
-    get cellIndex() {
-      return closest(this, 'TR').cells._toArray().indexOf(this);
-    }
-  },
-  attributes: [
-    'abbr',
-    'align',
-    'axis',
-    'bgColor',
-    {prop: 'ch', attr: 'char'},
-    {prop: 'chOff', attr: 'charoff'},
-    {prop: 'colSpan', type: 'long'},
-    'height',
-    {prop: 'noWrap', type: 'boolean'},
-    {prop: 'rowSpan', type: 'long'},
-    'scope',
-    'vAlign',
-    'width'
-  ]
-});
-
-define('HTMLFrameSetElement', {
-  tagName: 'FRAMESET',
-  attributes: [
-    'cols',
-    'rows'
-  ]
-});
-
-function loadFrame (frame) {
-  if (frame._contentDocument) {
-    // We don't want to access document.parentWindow, since the getter will
-    // cause a new window to be allocated if it doesn't exist.  Probe the
-    // private variable instead.
-    if (frame._contentDocument._parentWindow) {
-      // close calls delete on its document.
-      frame._contentDocument.parentWindow.close();
-    } else {
-      delete frame._contentDocument;
-    }
-  }
-
-  var src = frame.src.trim() === '' ? 'about:blank' : frame.src;
-  var parentDoc = frame._ownerDocument;
-
-  // If the URL can't be resolved or the src attribute is missing / blank,
-  // then url should be set to the string "about:blank".
-  // (http://www.whatwg.org/specs/web-apps/current-work/#the-iframe-element)
-  var url = core.resourceLoader.resolve(parentDoc, src);
-  var contentDoc = frame._contentDocument = new core.HTMLDocument({
-    parsingMode: 'html',
-    url: url,
-    documentRoot: Path.dirname(url)
-  });
-  applyDocumentFeatures(contentDoc, parentDoc.implementation._features);
-
-  var parent = parentDoc.parentWindow;
-  var contentWindow = contentDoc.parentWindow;
-  contentWindow.parent = parent;
-  contentWindow.top = parent.top;
-
-  // Handle about:blank with a simulated load of an empty document.
-  if(url === 'about:blank') {
-    core.resourceLoader.enqueue(frame, function() {
-      contentDoc.write();
-      contentDoc.close();
-    })();
-  } else {
-    core.resourceLoader.load(frame, url, function(html, filename) {
-      contentDoc.write(html);
-      contentDoc.close();
-    });
-  }
-}
-
-define('HTMLFrameElement', {
-  tagName: 'FRAME',
-  init : function () {
-    // Set up the frames array.  window.frames really just returns a reference
-    // to the window object, so the frames array is just implemented as indexes
-    // on the window.
-    var parent = this._ownerDocument.parentWindow;
-    var frameID = parent._length++;
-    var self = this;
-    defineGetter(parent, frameID, function () {
-      return self.contentWindow;
-    });
-
-    // The contentDocument/contentWindow shouldn't be created until the frame
-    // is inserted:
-    // "When an iframe element is first inserted into a document, the user
-    //  agent must create a nested browsing context, and then process the
-    //  iframe attributes for the first time."
-    //  (http://www.whatwg.org/specs/web-apps/current-work/#the-iframe-element)
-    this._initInsertListener = function () {
-      loadFrame(self);
-    };
-    this.addEventListener('DOMNodeInsertedIntoDocument', this._initInsertListener, false);
-  },
-  proto: {
-    _attrModified: function(name, value, oldVal) {
-      core.HTMLElement.prototype._attrModified.call(this, name, value, oldVal);
-      var self = this;
-      if (name === 'name') {
-        // Remove named frame access.
-        if (oldVal) {
-          this._ownerDocument.parentWindow._frame(oldVal);
-        }
-        // Set up named frame access.
-        if (value) {
-          this._ownerDocument.parentWindow._frame(value, this);
-        }
-      } else if (name === 'src') {
-        // Page we don't fetch the page until the node is inserted. This at
-        // least seems to be the way Chrome does it.
-        if (!this._attachedToDocument) {
-          if (!this._waitingOnInsert) {
-            // First, remove the listener added in 'init'.
-            this.removeEventListener('DOMNodeInsertedIntoDocument',
-                                     this._initInsertListener, false)
-
-            // If we aren't already waiting on an insert, add a listener.
-            // This guards against src being set multiple times before the frame
-            // is inserted into the document - we don't want to register multiple
-            // callbacks.
-            this.addEventListener('DOMNodeInsertedIntoDocument', function loader () {
-              self.removeEventListener('DOMNodeInsertedIntoDocument', loader, false);
-              this._waitingOnInsert = false;
-              loadFrame(self);
-            }, false);
-            this._waitingOnInsert = true;
-          }
-        } else {
-          loadFrame(self);
-        }
-      }
-    },
-    _contentDocument : null,
-    get contentDocument() {
-      if (this._contentDocument == null) {
-        this._contentDocument = new core.HTMLDocument({ parsingMode: "html" });
-      }
-      return this._contentDocument;
-    },
-    get contentWindow() {
-      return this.contentDocument.parentWindow;
-    }
-  },
-  attributes: [
-    'frameBorder',
-    'longDesc',
-    'marginHeight',
-    'marginWidth',
-    'name',
-    {prop: 'noResize', type: 'boolean'},
-    'scrolling',
-    {prop: 'src', type: 'string', write: false}
-  ]
-});
-
-define('HTMLIFrameElement', {
-  tagName: 'IFRAME',
-  parentClass: core.HTMLFrameElement,
-  attributes: [
-    'align',
-    'frameBorder',
-    'height',
-    'longDesc',
-    'marginHeight',
-    'marginWidth',
-    'name',
-    'scrolling',
-    'src',
-    'width'
-  ]
-});
diff --git a/node_modules/jsdom/lib/jsdom/level2/languages/javascript.js b/node_modules/jsdom/lib/jsdom/level2/languages/javascript.js
deleted file mode 100644
index 308724d..0000000
--- a/node_modules/jsdom/lib/jsdom/level2/languages/javascript.js
+++ /dev/null
@@ -1,13 +0,0 @@
-exports.javascript = function(element, code, filename) {
-  var doc = element.ownerDocument, window = doc && doc.parentWindow;
-  if (window) {
-    try {
-      window.run(code, filename);
-    } catch (e) {
-      element.raise(
-        'error', 'Running ' + filename + ' failed.',
-        {error: e, filename: filename}
-      );
-    }
-  }
-};
diff --git a/node_modules/jsdom/lib/jsdom/level2/style.js b/node_modules/jsdom/lib/jsdom/level2/style.js
deleted file mode 100644
index ab63fcc..0000000
--- a/node_modules/jsdom/lib/jsdom/level2/style.js
+++ /dev/null
@@ -1,263 +0,0 @@
-var core = require("../level1/core"),
-    utils = require("../utils"),
-    defineGetter = utils.defineGetter,
-    defineSetter = utils.defineSetter,
-    inheritFrom = utils.inheritFrom,
-    cssom = require("cssom"),
-    cssstyle = require("cssstyle"),
-    assert = require('assert');
-
-// What works now:
-// - Accessing the rules defined in individual stylesheets
-// - Modifications to style content attribute are reflected in style property
-// - Modifications to style property are reflected in style content attribute
-// TODO
-// - Modifications to style element's textContent are reflected in sheet property.
-// - Modifications to style element's sheet property are reflected in textContent.
-// - Modifications to link.href property are reflected in sheet property.
-// - Less-used features of link: disabled
-// - Less-used features of style: disabled, scoped, title
-// - CSSOM-View
-//   - getComputedStyle(): requires default stylesheet, cascading, inheritance,
-//     filtering by @media (screen? print?), layout for widths/heights
-// - Load events are not in the specs, but apparently some browsers
-//   implement something. Should onload only fire after all @imports have been
-//   loaded, or only the primary sheet?
-
-core.StyleSheet = cssom.StyleSheet;
-core.MediaList = cssom.MediaList;
-core.CSSStyleSheet = cssom.CSSStyleSheet;
-core.CSSRule = cssom.CSSRule;
-core.CSSStyleRule = cssom.CSSStyleRule;
-core.CSSMediaRule = cssom.CSSMediaRule;
-core.CSSImportRule = cssom.CSSImportRule;
-core.CSSStyleDeclaration = cssstyle.CSSStyleDeclaration;
-
-// Relavant specs
-// http://www.w3.org/TR/DOM-Level-2-Style (2000)
-// http://www.w3.org/TR/cssom-view/ (2008)
-// http://dev.w3.org/csswg/cssom/ (2010) Meant to replace DOM Level 2 Style
-// http://www.whatwg.org/specs/web-apps/current-work/multipage/ HTML5, of course
-// http://dev.w3.org/csswg/css-style-attr/  not sure what's new here
-
-// Objects that aren't in cssom library but should be:
-//   CSSRuleList  (cssom just uses array)
-//   CSSFontFaceRule
-//   CSSPageRule
-
-// These rules don't really make sense to implement, so CSSOM draft makes them
-// obsolete.
-//   CSSCharsetRule
-//   CSSUnknownRule
-
-// These objects are considered obsolete by CSSOM draft, although modern
-// browsers implement them.
-//   CSSValue
-//   CSSPrimitiveValue
-//   CSSValueList
-//   RGBColor
-//   Rect
-//   Counter
-
-// StyleSheetList -
-// http://www.w3.org/TR/DOM-Level-2-Style/stylesheets.html#StyleSheets-StyleSheetList
-// added a push method to help manage the length
-core.StyleSheetList = function() {
-  this._length = 0;
-};
-core.StyleSheetList.prototype = {
-  item: function (i) {
-    return this[i];
-  },
-  push: function (sheet) {
-    this[this._length] = sheet;
-    this._length++;
-  },
-  get length() {
-    return this._length;
-  }
-};
-
-defineGetter(core.Document.prototype, 'styleSheets', function() {
-  if (!this._styleSheets) {
-    this._styleSheets = new core.StyleSheetList();
-  }
-  // TODO: each style and link element should register its sheet on creation
-  // and remove it on removal.
-  return this._styleSheets;
-});
-
-
-/**
- * @this {core.HTMLLinkElement|core.HTMLStyleElement}
- * @param {string} url
- * @param {cssom.CSSStyleSheet} sheet
- * @see http://dev.w3.org/csswg/cssom/#requirements-on-user-agents-implementing0
- */
-function fetchStylesheet(url, sheet) {
-  core.resourceLoader.load(this, url, function(data, filename) {
-    // TODO: abort if the content-type is not text/css, and the document is
-    // in strict mode
-    sheet.href = core.resourceLoader.resolve(this.ownerDocument, url);
-    evaluateStylesheet.call(this, data, sheet, url);
-  });
-}
-/**
- * @this {core.HTMLLinkElement|core.HTMLStyleElement}
- * @param {string} data
- * @param {cssom.CSSStyleSheet} sheet
- * @param {string} baseUrl
- */
-function evaluateStylesheet(data, sheet, baseUrl) {
-  // this is the element
-  var newStyleSheet = cssom.parse(data);
-  var spliceArgs = newStyleSheet.cssRules;
-  spliceArgs.unshift(0, sheet.cssRules.length);
-  Array.prototype.splice.apply(sheet.cssRules, spliceArgs);
-  scanForImportRules.call(this, sheet.cssRules, baseUrl);
-  this.ownerDocument.styleSheets.push(sheet);
-}
-/**
- * @this {core.HTMLLinkElement|core.HTMLStyleElement}
- * @param {cssom.CSSStyleSheet} sheet
- * @param {string} baseUrl
- */
-function scanForImportRules(cssRules, baseUrl) {
-  if (!cssRules) return;
-  for (var i = 0; i < cssRules.length; ++i) {
-    if (cssRules[i].cssRules) {
-      // @media rule: keep searching inside it.
-      scanForImportRules.call(this, cssRules[i].cssRules, baseUrl);
-    } else if (cssRules[i].href) {
-      // @import rule: fetch the resource and evaluate it.
-      // See http://dev.w3.org/csswg/cssom/#css-import-rule
-      //     If loading of the style sheet fails its cssRules list is simply
-      //     empty. I.e. an @import rule always has an associated style sheet.
-      fetchStylesheet.call(this, cssRules[i].href, this.sheet);
-    }
-  }
-}
-
-/**
- * @param {string} data
- * @param {cssstyle.CSSStyleDeclaration} style
- */
-function evaluateStyleAttribute(data) {
-  // this is the element.
-
-}
-
-/**
- * Subclass of core.Attr that reflects the current cssText.
- */
-function StyleAttr(node, value) {
-  this._node = node;
-  core.Attr.call(this, node.ownerDocument, 'style');
-  if (!this._node._ignoreValueOfStyleAttr) {
-    this.nodeValue = value;
-  }
-}
-inheritFrom(core.Attr, StyleAttr, {
-  get nodeValue() {
-    if (typeof this._node._style === 'string') {
-      return this._node._style;
-    } else {
-      return this._node.style.cssText;
-    }
-  },
-  set nodeValue(value) {
-    this._node._style = value;
-  }
-});
-
-var $setNode_super = core.AttributeList.prototype.$setNode;
-/**
- * Overwrite core.AttrNodeMap#setNamedItem to create a StyleAttr instance
- * instead of a core.Attr if the name equals 'style'.
- */
-core.AttributeList.prototype.$setNode = function(attr) {
-  if (attr.name == 'style') {
-    attr = new StyleAttr(this._parentNode, attr.nodeValue);
-  }
-  return $setNode_super.call(this, attr);
-};
-
-/**
- * Lazily create a CSSStyleDeclaration.
- */
-defineGetter(core.HTMLElement.prototype, 'style', function() {
-  if (typeof this._style === 'string') {
-    // currently, cssom's parse doesn't really work if you pass in
-    // {state: 'name'}, so instead we just build a dummy sheet.
-    var styleSheet = cssom.parse('dummy{' + this._style + '}');
-    this._style = new cssstyle.CSSStyleDeclaration();
-    if (styleSheet.cssRules.length > 0 && styleSheet.cssRules[0].style) {
-      var newStyle = styleSheet.cssRules[0].style;
-      for (var i = 0; i < newStyle.length; ++i) {
-        var prop = newStyle[i];
-        this._style.setProperty(
-            prop,
-            newStyle.getPropertyValue(prop),
-            newStyle.getPropertyPriority(prop));
-      }
-    }
-  }
-  if (!this._style) {
-    this._style = new cssstyle.CSSStyleDeclaration();
-
-  }
-  if (!this.getAttributeNode('style')) {
-    // Tell the StyleAttr constructor to not overwrite this._style
-    this._ignoreValueOfStyleAttr = true;
-    this.setAttribute('style');
-    this._ignoreValueOfStyleAttr = false;
-  }
-  return this._style;
-});
-
-assert.equal(undefined, core.HTMLLinkElement._init);
-core.HTMLLinkElement._init = function() {
-  this.addEventListener('DOMNodeInsertedIntoDocument', function() {
-    if (!/(?:[ \t\n\r\f]|^)stylesheet(?:[ \t\n\r\f]|$)/i.test(this.rel)) {
-      // rel is a space-separated list of tokens, and the original rel types
-      // are case-insensitive.
-      return;
-    }
-    if (this.href) {
-      fetchStylesheet.call(this, this.href, this.sheet);
-    }
-  });
-  this.addEventListener('DOMNodeRemovedFromDocument', function() {
-  });
-};
-/**
- * @this {HTMLStyleElement|HTMLLinkElement}
- */
-var getOrCreateSheet = function() {
-  if (!this._cssStyleSheet) {
-    this._cssStyleSheet = new cssom.CSSStyleSheet();
-  }
-  return this._cssStyleSheet;
-};
-defineGetter(core.HTMLLinkElement.prototype, 'sheet', getOrCreateSheet);
-
-assert.equal(undefined, core.HTMLStyleElement._init);
-core.HTMLStyleElement._init = function() {
-  //console.log('init style')
-  this.addEventListener('DOMNodeInsertedIntoDocument', function() {
-    //console.log('style inserted')
-    //console.log('sheet: ', this.sheet);
-    if (this.type && this.type !== 'text/css') {
-      //console.log('bad type: ' + this.type)
-      return;
-    }
-    var content = '';
-    this._childNodes.forEach(function (child) {
-      if (child.nodeType === child.TEXT_NODE) { // text node
-        content += child.nodeValue;
-      }
-    });
-    evaluateStylesheet.call(this, content, this.sheet, this._ownerDocument.URL);
-  });
-};
-defineGetter(core.HTMLStyleElement.prototype, 'sheet', getOrCreateSheet);
diff --git a/node_modules/jsdom/lib/jsdom/level3/core.js b/node_modules/jsdom/lib/jsdom/level3/core.js
deleted file mode 100644
index 0d0820e..0000000
--- a/node_modules/jsdom/lib/jsdom/level3/core.js
+++ /dev/null
@@ -1,597 +0,0 @@
-var core          = require("../level1/core"),
-    defineGetter  = require('../utils').defineGetter,
-    defineSetter  = require('../utils').defineSetter,
-    HtmlToDom     = require('../browser/htmltodom').HtmlToDom,
-    domToHtml     = require('../browser/domtohtml').domToHtml;
-
-/*
-  valuetype DOMString sequence<unsigned short>;
-  typedef   unsigned long long DOMTimeStamp;
-  typedef   any DOMUserData;
-  typedef   Object DOMObject;
-
-*/
-// ExceptionCode
-core.VALIDATION_ERR                 = 16;
-core.TYPE_MISMATCH_ERR              = 17;
-
-/*
-  // Introduced in DOM Level 3:
-  interface NameList {
-    DOMString          getName(in unsigned long index);
-    DOMString          getNamespaceURI(in unsigned long index);
-    readonly attribute unsigned long   length;
-    boolean            contains(in DOMString str);
-    boolean            containsNS(in DOMString namespaceURI,
-                                  in DOMString name);
-  };
-
-  // Introduced in DOM Level 3:
-  interface DOMImplementationList {
-    DOMImplementation  item(in unsigned long index);
-    readonly attribute unsigned long   length;
-  };
-
-  // Introduced in DOM Level 3:
-  interface DOMImplementationSource {
-    DOMImplementation  getDOMImplementation(in DOMString features);
-    DOMImplementationList getDOMImplementationList(in DOMString features);
-  };
-*/
-
-
-core.DOMImplementation.prototype.getFeature = function(feature, version)  {
-
-};
-
-/*
-  interface Node {
-    // Modified in DOM Level 3:
-    Node               insertBefore(in Node newChild,
-                                    in Node refChild)
-                                        raises(DOMException);
-    // Modified in DOM Level 3:
-    Node               replaceChild(in Node newChild,
-                                    in Node oldChild)
-                                        raises(DOMException);
-    // Modified in DOM Level 3:
-    Node               removeChild(in Node oldChild)
-                                        raises(DOMException);
-    // Modified in DOM Level 3:
-    Node               appendChild(in Node newChild)
-                                        raises(DOMException);
-    boolean            hasChildNodes();
-    Node               cloneNode(in boolean deep);
-    // Modified in DOM Level 3:
-    void               normalize();
-    // Introduced in DOM Level 3:
-    readonly attribute DOMString       baseURI;
-*/
-
-// Compare Document Position
-var DOCUMENT_POSITION_DISCONNECTED = core.Node.DOCUMENT_POSITION_DISCONNECTED =
-                                     core.Node.prototype.DOCUMENT_POSITION_DISCONNECTED = 0x01;
-
-var DOCUMENT_POSITION_PRECEDING    = core.Node.DOCUMENT_POSITION_PRECEDING =
-                                     core.Node.prototype.DOCUMENT_POSITION_PRECEDING    = 0x02;
-
-var DOCUMENT_POSITION_FOLLOWING    = core.Node.DOCUMENT_POSITION_FOLLOWING =
-                                     core.Node.prototype.DOCUMENT_POSITION_FOLLOWING    = 0x04;
-
-var DOCUMENT_POSITION_CONTAINS     = core.Node.DOCUMENT_POSITION_CONTAINS =
-                                     core.Node.prototype.DOCUMENT_POSITION_CONTAINS     = 0x08;
-
-var DOCUMENT_POSITION_CONTAINED_BY = core.Node.DOCUMENT_POSITION_CONTAINED_BY =
-                                     core.Node.prototype.DOCUMENT_POSITION_CONTAINED_BY = 0x10;
-
-var DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = core.Node.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC =
-                                                core.Node.prototype.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20;
-
-var DOCUMENT_TYPE_NODE = core.Node.prototype.DOCUMENT_TYPE_NODE;
-
-core.Node.prototype.compareDocumentPosition = function compareDocumentPosition( otherNode ) {
-  if( !(otherNode instanceof core.Node) ) {
-    throw Error("Comparing position against non-Node values is not allowed")
-  }
-  var thisOwner, otherOwner;
-
-  if( this.nodeType === this.DOCUMENT_NODE)
-    thisOwner = this
-  else
-    thisOwner = this.ownerDocument
-
-  if( otherNode.nodeType === this.DOCUMENT_NODE)
-    otherOwner = otherNode
-  else
-    otherOwner = otherNode.ownerDocument
-
-  if( this === otherNode ) return 0
-  if( this === otherNode.ownerDocument ) return DOCUMENT_POSITION_FOLLOWING + DOCUMENT_POSITION_CONTAINED_BY
-  if( this.ownerDocument === otherNode ) return DOCUMENT_POSITION_PRECEDING + DOCUMENT_POSITION_CONTAINS
-  if( thisOwner !== otherOwner ) return DOCUMENT_POSITION_DISCONNECTED
-
-  // Text nodes for attributes does not have a _parentNode. So we need to find them as attribute child.
-  if( this.nodeType === this.ATTRIBUTE_NODE && this._childNodes && this._childNodes.indexOf(otherNode) !== -1)
-    return DOCUMENT_POSITION_FOLLOWING + DOCUMENT_POSITION_CONTAINED_BY
-
-  if( otherNode.nodeType === this.ATTRIBUTE_NODE && otherNode._childNodes && otherNode._childNodes.indexOf(this) !== -1)
-    return DOCUMENT_POSITION_PRECEDING + DOCUMENT_POSITION_CONTAINS
-
-  var point = this
-  var parents = [ ]
-  var previous = null
-  while( point ) {
-    if( point == otherNode ) return DOCUMENT_POSITION_PRECEDING + DOCUMENT_POSITION_CONTAINS
-    parents.push( point )
-    point = point._parentNode
-  }
-  point = otherNode
-  previous = null
-  while( point ) {
-    if( point == this ) return DOCUMENT_POSITION_FOLLOWING + DOCUMENT_POSITION_CONTAINED_BY
-    var location_index = parents.indexOf( point )
-    if( location_index !== -1) {
-     var smallest_common_ancestor = parents[ location_index ]
-     var this_index = smallest_common_ancestor._childNodes.indexOf( parents[location_index - 1] )
-     var other_index = smallest_common_ancestor._childNodes.indexOf( previous )
-     if( this_index > other_index ) {
-           return DOCUMENT_POSITION_PRECEDING
-     }
-     else {
-       return DOCUMENT_POSITION_FOLLOWING
-     }
-    }
-    previous = point
-    point = point._parentNode
-  }
-  return DOCUMENT_POSITION_DISCONNECTED
-};
-
-// @see http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#Node3-textContent
-defineGetter(core.Node.prototype, 'textContent', function() {
-  switch (this.nodeType) {
-    case this.COMMENT_NODE:
-    case this.CDATA_SECTION_NODE:
-    case this.PROCESSING_INSTRUCTION_NODE:
-    case this.TEXT_NODE:
-      return this.nodeValue;
-
-    case this.ATTRIBUTE_NODE:
-    case this.DOCUMENT_FRAGMENT_NODE:
-    case this.ELEMENT_NODE:
-      var out = '';
-      for (var i = 0 ; i < this._childNodes.length ; ++i) {
-        if (this._childNodes[i].nodeType !== this.COMMENT_NODE &&
-            this._childNodes[i].nodeType !== this.PROCESSING_INSTRUCTION_NODE) {
-          out += this._childNodes[i].textContent || '';
-        }
-      }
-      return out;
-
-    default:
-      return null;
-  }
-});
-
-defineSetter(core.Node.prototype, 'textContent', function(txt) {
-  switch (this.nodeType) {
-    case this.COMMENT_NODE:
-    case this.CDATA_SECTION_NODE:
-    case this.PROCESSING_INSTRUCTION_NODE:
-    case this.TEXT_NODE:
-      return this.nodeValue = String(txt);
-  }
-
-  for (var i = this._childNodes.length; --i >=0;) {
-    this.removeChild(this._childNodes[i]);
-  }
-  if (txt !== "" && txt != null) {
-    this.appendChild(this._ownerDocument.createTextNode(txt));
-  }
-  return txt;
-});
-
-/*
-    // Introduced in DOM Level 3:
-    DOMString          lookupPrefix(in DOMString namespaceURI);
-    // Introduced in DOM Level 3:
-    boolean            isDefaultNamespace(in DOMString namespaceURI);
-    // Introduced in DOM Level 3:
-    DOMString          lookupNamespaceURI(in DOMString prefix);
-    // Introduced in DOM Level 3:
-    DOMObject          getFeature(in DOMString feature,
-                                  in DOMString version);
-*/
-// Introduced in DOM Level 3:
-core.Node.prototype.setUserData = function(key, data, handler) {
-  var r = this[key] || null;
-  this[key] = data;
-  return(r);
-};
-
-// Introduced in DOM Level 3:
-core.Node.prototype.getUserData = function(key) {
-  var r = this[key] || null;
-  return(r);
-};
-/*
-  interface NodeList {
-    Node               item(in unsigned long index);
-    readonly attribute unsigned long   length;
-  };
-
-  interface NamedNodeMap {
-    Node               getNamedItem(in DOMString name);
-    Node               setNamedItem(in Node arg)
-                                        raises(DOMException);
-    Node               removeNamedItem(in DOMString name)
-                                        raises(DOMException);
-    Node               item(in unsigned long index);
-    readonly attribute unsigned long   length;
-    // Introduced in DOM Level 2:
-    Node               getNamedItemNS(in DOMString namespaceURI,
-                                      in DOMString localName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    Node               setNamedItemNS(in Node arg)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    Node               removeNamedItemNS(in DOMString namespaceURI,
-                                         in DOMString localName)
-                                        raises(DOMException);
-  };
-
-  interface CharacterData : Node {
-             attribute DOMString       data;
-                                        // raises(DOMException) on setting
-                                        // raises(DOMException) on retrieval
-
-    readonly attribute unsigned long   length;
-    DOMString          substringData(in unsigned long offset,
-                                     in unsigned long count)
-                                        raises(DOMException);
-    void               appendData(in DOMString arg)
-                                        raises(DOMException);
-    void               insertData(in unsigned long offset,
-                                  in DOMString arg)
-                                        raises(DOMException);
-    void               deleteData(in unsigned long offset,
-                                  in unsigned long count)
-                                        raises(DOMException);
-    void               replaceData(in unsigned long offset,
-                                   in unsigned long count,
-                                   in DOMString arg)
-                                        raises(DOMException);
-  };
-
-  interface Attr : Node {
-    readonly attribute DOMString       name;
-    readonly attribute boolean         specified;
-             attribute DOMString       value;
-                                        // raises(DOMException) on setting
-
-    // Introduced in DOM Level 2:
-    readonly attribute Element         ownerElement;
-    // Introduced in DOM Level 3:
-    readonly attribute TypeInfo        schemaTypeInfo;
-
-*/
-    // Introduced in DOM Level 3:
-defineGetter(core.Attr.prototype, 'isId', function() {
-  return (this.name.toLowerCase() === 'id');
-});
-/*
-  };
-
-  interface Element : Node {
-    readonly attribute DOMString       tagName;
-    DOMString          getAttribute(in DOMString name);
-    void               setAttribute(in DOMString name,
-                                    in DOMString value)
-                                        raises(DOMException);
-    void               removeAttribute(in DOMString name)
-                                        raises(DOMException);
-    Attr               getAttributeNode(in DOMString name);
-    Attr               setAttributeNode(in Attr newAttr)
-                                        raises(DOMException);
-    Attr               removeAttributeNode(in Attr oldAttr)
-                                        raises(DOMException);
-    NodeList           getElementsByTagName(in DOMString name);
-    // Introduced in DOM Level 2:
-    DOMString          getAttributeNS(in DOMString namespaceURI,
-                                      in DOMString localName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    void               setAttributeNS(in DOMString namespaceURI,
-                                      in DOMString qualifiedName,
-                                      in DOMString value)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    void               removeAttributeNS(in DOMString namespaceURI,
-                                         in DOMString localName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    Attr               getAttributeNodeNS(in DOMString namespaceURI,
-                                          in DOMString localName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    Attr               setAttributeNodeNS(in Attr newAttr)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    NodeList           getElementsByTagNameNS(in DOMString namespaceURI,
-                                              in DOMString localName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    boolean            hasAttribute(in DOMString name);
-    // Introduced in DOM Level 2:
-    boolean            hasAttributeNS(in DOMString namespaceURI,
-                                      in DOMString localName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 3:
-    readonly attribute TypeInfo        schemaTypeInfo;
-    // Introduced in DOM Level 3:
-    void               setIdAttribute(in DOMString name,
-                                      in boolean isId)
-                                        raises(DOMException);
-    // Introduced in DOM Level 3:
-    void               setIdAttributeNS(in DOMString namespaceURI,
-                                        in DOMString localName,
-                                        in boolean isId)
-                                        raises(DOMException);
-    // Introduced in DOM Level 3:
-    void               setIdAttributeNode(in Attr idAttr,
-                                          in boolean isId)
-                                        raises(DOMException);
-  };
-
-  interface Text : CharacterData {
-    Text               splitText(in unsigned long offset)
-                                        raises(DOMException);
-    // Introduced in DOM Level 3:
-    readonly attribute boolean         isElementContentWhitespace;
-    // Introduced in DOM Level 3:
-    readonly attribute DOMString       wholeText;
-    // Introduced in DOM Level 3:
-    Text               replaceWholeText(in DOMString content)
-                                        raises(DOMException);
-  };
-
-  interface Comment : CharacterData {
-  };
-
-  // Introduced in DOM Level 3:
-  interface TypeInfo {
-    readonly attribute DOMString       typeName;
-    readonly attribute DOMString       typeNamespace;
-
-    // DerivationMethods
-    const unsigned long       DERIVATION_RESTRICTION         = 0x00000001;
-    const unsigned long       DERIVATION_EXTENSION           = 0x00000002;
-    const unsigned long       DERIVATION_UNION               = 0x00000004;
-    const unsigned long       DERIVATION_LIST                = 0x00000008;
-
-    boolean            isDerivedFrom(in DOMString typeNamespaceArg,
-                                     in DOMString typeNameArg,
-                                     in unsigned long derivationMethod);
-  };
-*/
-// Introduced in DOM Level 3:
-core.UserDataHandler = function() {};
-core.UserDataHandler.prototype.NODE_CLONED   = 1;
-core.UserDataHandler.prototype.NODE_IMPORTED = 2;
-core.UserDataHandler.prototype.NODE_DELETED  = 3;
-core.UserDataHandler.prototype.NODE_RENAMED  = 4;
-core.UserDataHandler.prototype.NODE_ADOPTED  = 5;
-core.UserDataHandler.prototype.handle = function(operation, key, data, src, dst) {};
-
-// Introduced in DOM Level 3:
-core.DOMError = function(severity, message, type, relatedException, relatedData, location) {
-  this._severity         = severity;
-  this._message          = message;
-  this._type             = type;
-  this._relatedException = relatedException;
-  this._relatedData      = relatedData;
-  this._location         = location;
-};
-core.DOMError.prototype = {};
-core.DOMError.prototype.SEVERITY_WARNING     = 1;
-core.DOMError.prototype.SEVERITY_ERROR       = 2;
-core.DOMError.prototype.SEVERITY_FATAL_ERROR = 3;
-defineGetter(core.DOMError.prototype, 'severity', function() {
-  return this._severity;
-});
-defineGetter(core.DOMError.prototype, 'message', function() {
-  return this._message;
-});
-defineGetter(core.DOMError.prototype, 'type', function() {
-  return this._type;
-});
-defineGetter(core.DOMError.prototype, 'relatedException', function() {
-  return this._relatedException;
-});
-defineGetter(core.DOMError.prototype, 'relatedData', function() {
-  return this._relatedData;
-});
-defineGetter(core.DOMError.prototype, 'location', function() {
-  return this._location;
-});
-
-/*
-  // Introduced in DOM Level 3:
-  interface DOMErrorHandler {
-    boolean            handleError(in DOMError error);
-  };
-
-  // Introduced in DOM Level 3:
-  interface DOMLocator {
-    readonly attribute long            lineNumber;
-    readonly attribute long            columnNumber;
-    readonly attribute long            byteOffset;
-    readonly attribute long            utf16Offset;
-    readonly attribute Node            relatedNode;
-    readonly attribute DOMString       uri;
-  };
-*/
-
-// Introduced in DOM Level 3:
-core.DOMConfiguration = function(){
-  var possibleParameterNames = {
-    'canonical-form': [false, true], // extra rules for true
-    'cdata-sections': [true, false],
-    'check-character-normalization': [false, true],
-    'comments': [true, false],
-    'datatype-normalization': [false, true],
-    'element-content-whitespace': [true, false],
-    'entities': [true, false],
-    // 'error-handler': [],
-    'infoset': [undefined, true, false], // extra rules for true
-    'namespaces': [true, false],
-    'namespace-declarations': [true, false], // only checked if namespaces is true
-    'normalize-characters': [false, true],
-    // 'schema-location': [],
-    // 'schema-type': [],
-    'split-cdata-sections': [true, false],
-    'validate': [false, true],
-    'validate-if-schema': [false, true],
-    'well-formed': [true, false]
-  }
-};
-
-core.DOMConfiguration.prototype = {
-  setParameter: function(name, value) {},
-  getParameter: function(name) {},
-  canSetParameter: function(name, value) {},
-  parameterNames: function() {}
-};
-
-//core.Document.prototype._domConfig = new core.DOMConfiguration();
-defineGetter(core.Document.prototype, 'domConfig', function() {
-  return this._domConfig || new core.DOMConfiguration();;
-});
-
-// Introduced in DOM Level 3:
-core.DOMStringList = function() {};
-
-core.DOMStringList.prototype = {
-  item: function() {},
-  length: function() {},
-  contains: function() {}
-};
-
-
-/*
-  interface CDATASection : Text {
-  };
-
-  interface DocumentType : Node {
-    readonly attribute DOMString       name;
-    readonly attribute NamedNodeMap    entities;
-    readonly attribute NamedNodeMap    notations;
-    // Introduced in DOM Level 2:
-    readonly attribute DOMString       publicId;
-    // Introduced in DOM Level 2:
-    readonly attribute DOMString       systemId;
-    // Introduced in DOM Level 2:
-    readonly attribute DOMString       internalSubset;
-  };
-
-  interface Notation : Node {
-    readonly attribute DOMString       publicId;
-    readonly attribute DOMString       systemId;
-  };
-
-  interface Entity : Node {
-    readonly attribute DOMString       publicId;
-    readonly attribute DOMString       systemId;
-    readonly attribute DOMString       notationName;
-    // Introduced in DOM Level 3:
-    readonly attribute DOMString       inputEncoding;
-    // Introduced in DOM Level 3:
-    readonly attribute DOMString       xmlEncoding;
-    // Introduced in DOM Level 3:
-    readonly attribute DOMString       xmlVersion;
-  };
-
-  interface EntityReference : Node {
-  };
-
-  interface ProcessingInstruction : Node {
-    readonly attribute DOMString       target;
-             attribute DOMString       data;
-                                        // raises(DOMException) on setting
-
-  };
-
-  interface DocumentFragment : Node {
-  };
-
-  interface Document : Node {
-    // Modified in DOM Level 3:
-    readonly attribute DocumentType    doctype;
-    readonly attribute DOMImplementation implementation;
-    readonly attribute Element         documentElement;
-    Element            createElement(in DOMString tagName)
-                                        raises(DOMException);
-    DocumentFragment   createDocumentFragment();
-    Text               createTextNode(in DOMString data);
-    Comment            createComment(in DOMString data);
-    CDATASection       createCDATASection(in DOMString data)
-                                        raises(DOMException);
-    ProcessingInstruction createProcessingInstruction(in DOMString target,
-                                                      in DOMString data)
-                                        raises(DOMException);
-    Attr               createAttribute(in DOMString name)
-                                        raises(DOMException);
-    EntityReference    createEntityReference(in DOMString name)
-                                        raises(DOMException);
-    NodeList           getElementsByTagName(in DOMString tagname);
-    // Introduced in DOM Level 2:
-    Node               importNode(in Node importedNode,
-                                  in boolean deep)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    Element            createElementNS(in DOMString namespaceURI,
-                                       in DOMString qualifiedName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    Attr               createAttributeNS(in DOMString namespaceURI,
-                                         in DOMString qualifiedName)
-                                        raises(DOMException);
-    // Introduced in DOM Level 2:
-    NodeList           getElementsByTagNameNS(in DOMString namespaceURI,
-                                              in DOMString localName);
-    // Introduced in DOM Level 2:
-    Element            getElementById(in DOMString elementId);
-*/
-/*
-    // Introduced in DOM Level 3:
-    readonly attribute DOMString       xmlEncoding;
-    // Introduced in DOM Level 3:
-             attribute boolean         xmlStandalone;
-                                        // raises(DOMException) on setting
-
-    // Introduced in DOM Level 3:
-             attribute DOMString       xmlVersion;
-                                        // raises(DOMException) on setting
-
-    // Introduced in DOM Level 3:
-             attribute boolean         strictErrorChecking;
-    // Introduced in DOM Level 3:
-             attribute DOMString       documentURI;
-    // Introduced in DOM Level 3:
-    Node               adoptNode(in Node source)
-                                        raises(DOMException);
-    // Introduced in DOM Level 3:
-    readonly attribute DOMConfiguration domConfig;
-    // Introduced in DOM Level 3:
-    void               normalizeDocument();
-    // Introduced in DOM Level 3:
-    Node               renameNode(in Node n,
-                                  in DOMString namespaceURI,
-                                  in DOMString qualifiedName)
-                                        raises(DOMException);
-  };
-};
-
-#endif // _DOM_IDL_
-*/
diff --git a/node_modules/jsdom/lib/jsdom/level3/ls.js b/node_modules/jsdom/lib/jsdom/level3/ls.js
deleted file mode 100644
index 5cc44f4..0000000
--- a/node_modules/jsdom/lib/jsdom/level3/ls.js
+++ /dev/null
@@ -1,211 +0,0 @@
-// w3c Load/Save functionality: http://www.w3.org/TR/2004/REC-DOM-Level-3-LS-20040407/
-
-var core = require('../level1/core');
-var createFrom = require('../utils').createFrom;
-
-var ls = {};
-
-// TODO: what is this?
-//typedef dom::DOMConfiguration DOMConfiguration;
-
-ls.LSException = function LSException(code) {
-  this.code = code;
-};
-
-ls.LSException.prototype = {
-  // LSExceptionCode
-  PARSE_ERR                       : 81,
-  SERIALIZE_ERR                   : 82
-};
-
-ls.DOMImplementationLS = function DOMImplementationLS() {
-
-};
-
-var DOMImplementationExtension = {
-
-  // DOMImplementationLSMode
-  MODE_SYNCHRONOUS  : 1,
-  MODE_ASYNCHRONOUS : 2,
-
-  // raises(dom::DOMException);
-  createLSParser : function(/* int */ mode, /* string */ schemaType) {
-    return new ls.LSParser(mode, schemaType);
-  },
-
-  createLSSerializer : function() {
-    return new ls.LSSerializer();
-  },
-
-  createLSInput : function() {
-    return new ls.LSInput();
-  },
-
-  createLSOutput : function() {
-    return new ls.LSOutput();
-  }
-};
-
-Object.keys(DOMImplementationExtension).forEach(function(k, v) {
-  core.DOMImplementation.prototype[k] = DOMImplementationExtension[k];
-});
-
-ls.DOMImplementationLS.prototype = DOMImplementationExtension;
-
-core.Document.getFeature = function() {
-  return DOMImplementationExtension;
-};
-
-ls.LSParser = function LSParser() {
-  this._domConfig = new core.DOMConfiguration();
-};
-ls.LSParser.prototype = {
-  get domConfig() { return this._domConfig; },
-  get filter() { return this._filter || null; },
-  set filter(value) { this._filter = value; },
-  get async() { return this._async; },
-  get busy() { return this._busy; },
-
-  // raises(dom::DOMException, LSException);
-  parse : function (/* LSInput */ input) {
-    var doc = new core.Document();
-    doc._inputEncoding = 'UTF-16';
-    return doc;
-  },
-
-  // raises(dom::DOMException, LSException);
-  parseURI : function(/* string */ uri) {
-    return new core.Document();
-  },
-
-  // ACTION_TYPES
-  ACTION_APPEND_AS_CHILDREN       : 1,
-  ACTION_REPLACE_CHILDREN         : 2,
-  ACTION_INSERT_BEFORE            : 3,
-  ACTION_INSERT_AFTER             : 4,
-  ACTION_REPLACE                  : 5,
-
-  // @returns Node
-  // @raises DOMException, LSException
-  parseWithContext                : function(/* LSInput */ input, /* Node */ contextArg, /* int */ action) {
-    return new core.Node();
-  },
-
-  abort                           : function() {
-    // TODO: implement
-  }
-};
-
-ls.LSInput = function LSInput() {};
-ls.LSInput.prototype = {
-  get characterStream() { return this._characterStream || null; },
-  set characterStream(value) { this._characterStream = value; },
-  get byteStream() { return this._byteStream || null; },
-  set byteStream(value) { this._byteStream = value; },
-  get stringData() { return this._stringData || null; },
-  set stringData(value) { this._stringData = value; },
-  get systemId() { return this._systemId || null; },
-  set systemId(value) { this._systemId = value; },
-  get publicId() { return this._publicId || null; },
-  set publicId(value) { this._publicId = value; },
-  get baseURI() { return this._baseURI || null; },
-  set baseURI(value) { this._baseURI = value; },
-  get encoding() { return this._encoding || null; },
-  set encoding(value) { this._encoding = value; },
-  get certifiedText() { return this._certifiedText || null; },
-  set certifiedText(value) { this._certifiedText = value; },
-};
-
-ls.LSResourceResolver = function LSResourceResolver() {};
-
-// @returns LSInput
-ls.LSResourceResolver.prototype.resolveResource = function(type, namespaceURI, publicId, systemId, baseURI) {
-  return new ls.LSInput();
-};
-
-ls.LSParserFilter = function LSParserFilter() {};
-ls.LSParserFilter.prototype = {
-
-  // Constants returned by startElement and acceptNode
-  FILTER_ACCEPT                   : 1,
-  FILTER_REJECT                   : 2,
-  FILTER_SKIP                     : 3,
-  FILTER_INTERRUPT                : 4,
-
-  get whatToShow() { return this._whatToShow; },
-
-  // @returns int
-  startElement : function(/* Element */ elementArg) {
-    return 0;
-  },
-
-  // @returns int
-  acceptNode : function(/* Node */ nodeArg) {
-    return nodeArg;
-  }
-};
-
-ls.LSSerializer = function LSSerializer() {
-  this._domConfig = new core.DOMConfiguration();
-};
-ls.LSSerializer.prototype = {
-  get domConfig() { return this._domConfig; },
-  get newLine() { return this._newLine || null; },
-  set newLine(value) { this._newLine = value; },
-  get filter() { return this._filter || null; },
-  set filter(value) { this._filter = value; },
-
-  // @returns boolean
-  // @raises LSException
-  write : function(/* Node */ nodeArg, /* LSOutput */ destination) {
-   return true;
-  },
-
-  // @returns boolean
-  // @raises LSException
-  writeToURI : function(/* Node */ nodeArg, /* string */ uri) {
-   return true;
-  },
-
-  // @returns string
-  // @raises DOMException, LSException
-  writeToString : function(/* Node */ nodeArg) {
-    return "";
-  }
-};
-
-ls.LSOutput = function LSOutput() {};
-ls.LSOutput.prototype = {
-  get characterStream() { return this._characterStream || null; },
-  set characterStream(value) { this._characterStream = value; },
-  get byteStream() { return this._byteStream || null; },
-  set byteStream(value) { this._byteStream = value; },
-  get systemId() { return this._systemId || null; },
-  set systemId(value) { this._systemId = value; },
-  get encoding() { return this._encoding || null; },
-  set encoding(value) { this._encoding = value; },
-};
-
-ls.LSProgressEvent = function LSProgressEvent() {};
-ls.LSProgressEvent.prototype = createFrom(core.Event, {
-  constructor: ls.LSProgressEvent,
-  get input() { return this._input; },
-  get position() { return this._position; },
-  get totalSize() { return this._totalSize; },
-});
-
-ls.LSLoadEvent = function LSLoadEvent() {};
-ls.LSLoadEvent.prototype = createFrom(core.Event, {
-  get newDocument() { return this._newDocument; },
-  get input() { return this._input; },
-});
-
-
-// TODO: do traversal
-ls.LSSerializerFilter = function LSSerializerFilter() {};
-ls.LSSerializerFilter.prototype = {
-  get whatToShow() { return this._whatToShow; },
-};
-
-// ls.LSSerializerFilter.prototype.__proto__ = level2.traversal.NodeFiler;
-
diff --git a/node_modules/jsdom/lib/jsdom/level3/xpath.js b/node_modules/jsdom/lib/jsdom/level3/xpath.js
deleted file mode 100644
index 98e3a7d..0000000
--- a/node_modules/jsdom/lib/jsdom/level3/xpath.js
+++ /dev/null
@@ -1,1866 +0,0 @@
-/** Here is yet another implementation of XPath 1.0 in Javascript.
- *
- * My goal was to make it relatively compact, but as I fixed all the axis bugs
- * the axes became more and more complicated. :-(.
- *
- * I have not implemented namespaces or case-sensitive axes for XML yet.
- *
- * How to test it in Chrome: You can make a Chrome extension that replaces
- * the WebKit XPath parser with this one. But it takes a bit of effort to
- * get around isolated world and same-origin restrictions:
- * manifest.json:
-    {
-      "name": "XPathTest",
-      "version": "0.1",
-      "content_scripts": [{
-        "matches": ["http://localhost/*"],  // or wildcard host
-        "js": ["xpath.js", "injection.js"],
-        "all_frames": true, "run_at": "document_start"
-      }]
-    }
- * injection.js:
-    // goal: give my xpath object to the website's JS context.
-    var script = document.createElement('script');
-    script.textContent =
-        "document.addEventListener('xpathextend', function(e) {\n" +
-        "  console.log('extending document with xpath...');\n" +
-        "  e.detail(window);" +
-        "});";
-    document.documentElement.appendChild(script);
-    document.documentElement.removeChild(script);
-    var evt = document.createEvent('CustomEvent');
-    evt.initCustomEvent('xpathextend', true, true, this.xpath.extend);
-    document.dispatchEvent(evt);
- */
-(function() {
-  var xpath;
-  var core;
-  if ('function' === typeof require) {
-    xpath = exports; // the tests go through this
-    core = require("../level1/core");
-  } else {
-    xpath = {};
-    core = this;
-  }
-
-
-  /***************************************************************************
-   *                            Tokenization                                 *
-   ***************************************************************************/
-  /**
-   * The XPath lexer is basically a single regular expression, along with
-   * some helper functions to pop different types.
-   */
-  var Stream = xpath.Stream = function Stream(str) {
-    this.original = this.str = str;
-    this.peeked = null;
-    // TODO: not really needed, but supposedly tokenizer also disambiguates
-    // a * b vs. node test *
-    this.prev = null;  // for debugging
-    this.prevprev = null;
-  }
-  Stream.prototype = {
-    peek: function() {
-      if (this.peeked) return this.peeked;
-      var m = this.re.exec(this.str);
-      if (!m) return null;
-      this.str = this.str.substr(m[0].length);
-      return this.peeked = m[1];
-    },
-    /** Peek 2 tokens ahead. */
-    peek2: function() {
-      this.peek();  // make sure this.peeked is set
-      var m = this.re.exec(this.str);
-      if (!m) return null;
-      return m[1];
-    },
-    pop: function() {
-      var r = this.peek();
-      this.peeked = null;
-      this.prevprev = this.prev;
-      this.prev = r;
-      return r;
-    },
-    trypop: function(tokens) {
-      var tok = this.peek();
-      if (tok === tokens) return this.pop();
-      if (Array.isArray(tokens)) {
-        for (var i = 0; i < tokens.length; ++i) {
-          var t = tokens[i];
-          if (t == tok) return this.pop();;
-        }
-      }
-    },
-    trypopfuncname: function() {
-      var tok = this.peek();
-      if (!this.isQnameRe.test(tok))
-        return null;
-      switch (tok) {
-        case 'comment': case 'text': case 'processing-instruction': case 'node':
-          return null;
-      }
-      if ('(' != this.peek2()) return null;
-      return this.pop();
-    },
-    trypopaxisname: function() {
-      var tok = this.peek();
-      switch (tok) {
-        case 'ancestor': case 'ancestor-or-self': case 'attribute':
-        case 'child': case 'descendant': case 'descendant-or-self':
-        case 'following': case 'following-sibling': case 'namespace':
-        case 'parent': case 'preceding': case 'preceding-sibling': case 'self':
-          if ('::' == this.peek2()) return this.pop();
-      }
-      return null;
-    },
-    trypopnametest: function() {
-      var tok = this.peek();
-      if ('*' === tok || this.startsWithNcNameRe.test(tok)) return this.pop();
-      return null;
-    },
-    trypopliteral: function() {
-      var tok = this.peek();
-      if (null == tok) return null;
-      var first = tok.charAt(0);
-      var last = tok.charAt(tok.length - 1);
-      if ('"' === first && '"' === last ||
-          "'" === first && "'" === last) {
-        this.pop();
-        return tok.substr(1, tok.length - 2);
-      }
-    },
-    trypopnumber: function() {
-      var tok = this.peek();
-      if (this.isNumberRe.test(tok)) return parseFloat(this.pop());
-      else return null;
-    },
-    trypopvarref: function() {
-      var tok = this.peek();
-      if (null == tok) return null;
-      if ('$' === tok.charAt(0)) return this.pop().substr(1);
-      else return null;
-    },
-    position: function() {
-      return this.original.length - this.str.length;
-    }
-  };
-  (function() {
-    // http://www.w3.org/TR/REC-xml-names/#NT-NCName
-    var nameStartCharsExceptColon =
-        'A-Z_a-z\xc0-\xd6\xd8-\xf6\xF8-\u02FF\u0370-\u037D\u037F-\u1FFF' +
-        '\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF' +
-        '\uFDF0-\uFFFD';  // JS doesn't support [#x10000-#xEFFFF]
-    var nameCharExceptColon = nameStartCharsExceptColon +
-        '\\-\\.0-9\xb7\u0300-\u036F\u203F-\u2040';
-    var ncNameChars = '[' + nameStartCharsExceptColon +
-        '][' + nameCharExceptColon + ']*'
-    // http://www.w3.org/TR/REC-xml-names/#NT-QName
-    var qNameChars = ncNameChars + '(?::' + ncNameChars + ')?';
-    var otherChars = '\\.\\.|[\\(\\)\\[\\].@,]|::';  // .. must come before [.]
-    var operatorChars =
-        'and|or|mod|div|' +
-        '//|!=|<=|>=|[*/|+\\-=<>]';  // //, !=, <=, >= before individual ones.
-    var literal = '"[^"]*"|' + "'[^']*'";
-    var numberChars = '[0-9]+(?:\\.[0-9]*)?|\\.[0-9]+';
-    var variableReference = '\\$' + qNameChars;
-    var nameTestChars = '\\*|' + ncNameChars + ':\\*|' + qNameChars;
-    var optionalSpace = '[ \t\r\n]*';  // stricter than regexp \s.
-    var nodeType = 'comment|text|processing-instruction|node';
-    var re = new RegExp(
-        // numberChars before otherChars so that leading-decimal doesn't become .
-        '^' + optionalSpace + '(' + numberChars + '|' + otherChars + '|' +
-        nameTestChars + '|' + operatorChars + '|' + literal + '|' +
-        variableReference + ')'
-        // operatorName | nodeType | functionName | axisName are lumped into
-        // qName for now; we'll check them on pop.
-    );
-    Stream.prototype.re = re;
-    Stream.prototype.startsWithNcNameRe = new RegExp('^' + ncNameChars);
-    Stream.prototype.isQnameRe = new RegExp('^' + qNameChars + '$');
-    Stream.prototype.isNumberRe = new RegExp('^' + numberChars + '$');
-  })();
-
-  /***************************************************************************
-   *                               Parsing                                   *
-   ***************************************************************************/
-  var parse = xpath.parse = function parse(stream, a) {
-    var r = orExpr(stream,a);
-    var x, unparsed = [];
-    while (x = stream.pop()) {
-      unparsed.push(x);
-    }
-    if (unparsed.length)
-      throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                               'Position ' + stream.position() +
-                               ': Unparsed tokens: ' + unparsed.join(' '));
-    return r;
-  }
-
-  /**
-   * binaryL  ::= subExpr
-   *            | binaryL op subExpr
-   * so a op b op c becomes ((a op b) op c)
-   */
-  function binaryL(subExpr, stream, a, ops) {
-    var lhs = subExpr(stream, a);
-    if (lhs == null) return null;
-    var op;
-    while (op = stream.trypop(ops)) {
-      var rhs = subExpr(stream, a);
-      if (rhs == null)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected something after ' + op);
-      lhs = a.node(op, lhs, rhs);
-    }
-    return lhs;
-  }
-  /**
-   * Too bad this is never used. If they made a ** operator (raise to power),
-   ( we would use it.
-   * binaryR  ::= subExpr
-   *            | subExpr op binaryR
-   * so a op b op c becomes (a op (b op c))
-   */
-  function binaryR(subExpr, stream, a, ops) {
-    var lhs = subExpr(stream, a);
-    if (lhs == null) return null;
-    var op = stream.trypop(ops);
-    if (op) {
-      var rhs = binaryR(stream, a);
-      if (rhs == null)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected something after ' + op);
-      return a.node(op, lhs, rhs);
-    } else {
-      return lhs;// TODO
-    }
-  }
-  /** [1] LocationPath::= RelativeLocationPath | AbsoluteLocationPath
-   * e.g. a, a/b, //a/b
-   */
-  function locationPath(stream, a) {
-    return absoluteLocationPath(stream, a) ||
-           relativeLocationPath(null, stream, a);
-  }
-  /** [2] AbsoluteLocationPath::= '/' RelativeLocationPath? | AbbreviatedAbsoluteLocationPath
-   *  [10] AbbreviatedAbsoluteLocationPath::= '//' RelativeLocationPath
-   */
-  function absoluteLocationPath(stream, a) {
-    var op = stream.peek();
-    if ('/' === op || '//' === op) {
-      var lhs = a.node('Root');
-      return relativeLocationPath(lhs, stream, a, true);
-    } else {
-      return null;
-    }
-  }
-  /** [3] RelativeLocationPath::= Step | RelativeLocationPath '/' Step |
-   *                            | AbbreviatedRelativeLocationPath
-   *  [11] AbbreviatedRelativeLocationPath::= RelativeLocationPath '//' Step
-   * e.g. p/a, etc.
-   */
-  function relativeLocationPath(lhs, stream, a, isOnlyRootOk) {
-    if (null == lhs) {
-      lhs = step(stream, a);
-      if (null == lhs) return lhs;
-    }
-    var op;
-    while (op = stream.trypop(['/', '//'])) {
-      if ('//' === op) {
-        lhs = a.node('/', lhs,
-                     a.node('Axis', 'descendant-or-self', 'node', undefined));
-      }
-      var rhs = step(stream, a);
-      if (null == rhs && '/' === op && isOnlyRootOk) return lhs;
-      else isOnlyRootOk = false;
-      if (null == rhs)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected step after ' + op);
-      lhs = a.node('/', lhs, rhs);
-    }
-    return lhs;
-  }
-  /** [4] Step::= AxisSpecifier NodeTest Predicate* | AbbreviatedStep
-   *  [12] AbbreviatedStep::= '.' | '..'
-   * e.g. @href, self::p, p, a[@href], ., ..
-   */
-  function step(stream, a) {
-    var abbrStep = stream.trypop(['.', '..']);
-    if ('.' === abbrStep)  // A location step of . is short for self::node().
-      return a.node('Axis', 'self', 'node');
-    if ('..' === abbrStep)  // A location step of .. is short for parent::node()
-      return a.node('Axis', 'parent', 'node');
-
-    var axis = axisSpecifier(stream, a);
-    var nodeType = nodeTypeTest(stream, a);
-    var nodeName;
-    if (null == nodeType) nodeName = nodeNameTest(stream, a);
-    if (null == axis && null == nodeType && null == nodeName) return null;
-    if (null == nodeType && null == nodeName)
-        throw new XPathException(
-            XPathException.INVALID_EXPRESSION_ERR,
-            'Position ' + stream.position() +
-            ': Expected nodeTest after axisSpecifier ' + axis);
-    if (null == axis) axis = 'child';
-    if (null == nodeType) {
-      // When there's only a node name, then the node type is forced to be the
-      // principal node type of the axis.
-      // see http://www.w3.org/TR/xpath/#dt-principal-node-type
-      if ('attribute' === axis) nodeType = 'attribute';
-      else if ('namespace' === axis) nodeType = 'namespace';
-      else nodeType = 'element';
-    }
-    var lhs = a.node('Axis', axis, nodeType, nodeName);
-    var pred;
-    while (null != (pred = predicate(lhs, stream, a))) {
-      lhs = pred;
-    }
-    return lhs;
-  }
-  /** [5] AxisSpecifier::= AxisName '::' | AbbreviatedAxisSpecifier
-   *  [6] AxisName::= 'ancestor' | 'ancestor-or-self' | 'attribute' | 'child'
-   *                | 'descendant' | 'descendant-or-self' | 'following'
-   *                | 'following-sibling' | 'namespace' | 'parent' |
-   *                | 'preceding' | 'preceding-sibling' | 'self'
-   *  [13] AbbreviatedAxisSpecifier::= '@'?
-   */
-  function axisSpecifier(stream, a) {
-    var attr = stream.trypop('@');
-    if (null != attr) return 'attribute';
-    var axisName = stream.trypopaxisname();
-    if (null != axisName) {
-      var coloncolon = stream.trypop('::');
-      if (null == coloncolon)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Should not happen. Should be ::.');
-      return axisName;
-    }
-  }
-  /** [7] NodeTest::= NameTest | NodeType '(' ')' | 'processing-instruction' '(' Literal ')'
-   *  [38] NodeType::= 'comment' | 'text' | 'processing-instruction' | 'node'
-   * I've split nodeTypeTest from nodeNameTest for convenience.
-   */
-  function nodeTypeTest(stream, a) {
-    if ('(' !== stream.peek2()) {
-      return null;
-    }
-    var type = stream.trypop(['comment', 'text', 'processing-instruction', 'node']);
-    if (null != type) {
-      if (null == stream.trypop('('))
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Should not happen.');
-      var param = undefined;
-      if (type == 'processing-instruction') {
-        param = stream.trypopliteral();
-      }
-      if (null == stream.trypop(')'))
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected close parens.');
-      return type
-    }
-  }
-  function nodeNameTest(stream, a) {
-    var name = stream.trypopnametest();
-    if (name != null) return name;
-    else return null;
-  }
-  /** [8] Predicate::= '[' PredicateExpr ']'
-   *  [9] PredicateExpr::= Expr
-   */
-  function predicate(lhs, stream, a) {
-    if (null == stream.trypop('[')) return null;
-    var expr = orExpr(stream, a);
-    if (null == expr)
-      throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                               'Position ' + stream.position() +
-                               ': Expected expression after [');
-    if (null == stream.trypop(']'))
-      throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                               'Position ' + stream.position() +
-                               ': Expected ] after expression.');
-    return a.node('Predicate', lhs, expr);
-  }
-  /** [14] Expr::= OrExpr
-   */
-  /** [15] PrimaryExpr::= VariableReference | '(' Expr ')' | Literal | Number | FunctionCall
-   * e.g. $x,  (3+4),  "hi",  32,  f(x)
-   */
-  function primaryExpr(stream, a) {
-    var x = stream.trypopliteral();
-    if (null == x)
-      x = stream.trypopnumber();
-    if (null != x) {
-      return x;
-    }
-    var varRef = stream.trypopvarref();
-    if (null != varRef) return a.node('VariableReference', varRef);
-    var funCall = functionCall(stream, a);
-    if (null != funCall) {
-      return funCall;
-    }
-    if (stream.trypop('(')) {
-      var e = orExpr(stream, a);
-      if (null == e)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected expression after (.');
-      if (null == stream.trypop(')'))
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected ) after expression.');
-      return e;
-    }
-    return null;
-  }
-  /** [16] FunctionCall::= FunctionName '(' ( Argument ( ',' Argument )* )? ')'
-   *  [17] Argument::= Expr
-   */
-  function functionCall(stream, a) {
-    var name = stream.trypopfuncname(stream, a);
-    if (null == name) return null;
-    if (null == stream.trypop('('))
-      throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                               'Position ' + stream.position() +
-                               ': Expected ( ) after function name.');
-    var params = [];
-    var first = true;
-    while (null == stream.trypop(')')) {
-      if (!first && null == stream.trypop(','))
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected , between arguments of the function.');
-      first = false;
-      var param = orExpr(stream, a);
-      if (param == null)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected expression as argument of function.');
-      params.push(param);
-    }
-    return a.node('FunctionCall', name, params);
-  }
-
-  /** [18] UnionExpr::= PathExpr | UnionExpr '|' PathExpr
-   */
-  function unionExpr(stream, a) { return binaryL(pathExpr, stream, a, '|'); }
-  /** [19] PathExpr ::= LocationPath
-   *                  | FilterExpr
-   *                  | FilterExpr '/' RelativeLocationPath
-   *                  | FilterExpr '//' RelativeLocationPath
-   * Unlike most other nodes, this one always generates a node because
-   * at this point all reverse nodesets must turn into a forward nodeset
-   */
-  function pathExpr(stream, a) {
-    // We have to do FilterExpr before LocationPath because otherwise
-    // LocationPath will eat up the name from a function call.
-    var filter = filterExpr(stream, a);
-    if (null == filter) {
-      var loc = locationPath(stream, a);
-      if (null == loc) {
-        throw new Error
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': The expression shouldn\'t be empty...');
-      }
-      return a.node('PathExpr', loc);
-    }
-    var rel = relativeLocationPath(filter, stream, a, false);
-    if (filter === rel) return rel;
-    else return a.node('PathExpr', rel);
-  }
-  /** [20] FilterExpr::= PrimaryExpr | FilterExpr Predicate
-   * aka. FilterExpr ::= PrimaryExpr Predicate*
-   */
-  function filterExpr(stream, a) {
-    var primary = primaryExpr(stream, a);
-    if (primary == null) return null;
-    var pred, lhs = primary;
-    while (null != (pred = predicate(lhs, stream, a))) {
-      lhs = pred;
-    }
-    return lhs;
-  }
-
-  /** [21] OrExpr::= AndExpr | OrExpr 'or' AndExpr
-   */
-  function orExpr(stream, a) {
-    var orig = (stream.peeked || '') + stream.str
-    var r = binaryL(andExpr, stream, a, 'or');
-    var now = (stream.peeked || '') + stream.str;
-    return r;
-  }
-  /** [22] AndExpr::= EqualityExpr | AndExpr 'and' EqualityExpr
-   */
-  function andExpr(stream, a) { return binaryL(equalityExpr, stream, a, 'and'); }
-  /** [23] EqualityExpr::= RelationalExpr | EqualityExpr '=' RelationalExpr
-   *                     | EqualityExpr '!=' RelationalExpr
-   */
-  function equalityExpr(stream, a) { return binaryL(relationalExpr, stream, a, ['=','!=']); }
-  /** [24] RelationalExpr::= AdditiveExpr | RelationalExpr '<' AdditiveExpr
-   *                       | RelationalExpr '>' AdditiveExpr
-   *                       | RelationalExpr '<=' AdditiveExpr
-   *                       | RelationalExpr '>=' AdditiveExpr
-   */
-  function relationalExpr(stream, a) { return binaryL(additiveExpr, stream, a, ['<','>','<=','>=']); }
-  /** [25] AdditiveExpr::= MultiplicativeExpr
-   *                     | AdditiveExpr '+' MultiplicativeExpr
-   *                     | AdditiveExpr '-' MultiplicativeExpr
-   */
-  function additiveExpr(stream, a) { return binaryL(multiplicativeExpr, stream, a, ['+','-']); }
-  /** [26] MultiplicativeExpr::= UnaryExpr
-   *                           | MultiplicativeExpr MultiplyOperator UnaryExpr
-   *                           | MultiplicativeExpr 'div' UnaryExpr
-   *                           | MultiplicativeExpr 'mod' UnaryExpr
-   */
-  function multiplicativeExpr(stream, a) { return binaryL(unaryExpr, stream, a, ['*','div','mod']); }
-  /** [27] UnaryExpr::= UnionExpr | '-' UnaryExpr
-   */
-  function unaryExpr(stream, a) {
-    if (stream.trypop('-')) {
-      var e = unaryExpr(stream, a);
-      if (null == e)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Expected unary expression after -');
-      return a.node('UnaryMinus', e);
-    }
-    else return unionExpr(stream, a);
-  }
-  var astFactory = {
-    node: function() {return Array.prototype.slice.call(arguments);}
-  };
-
-
-  /***************************************************************************
-   *                            Optimizations (TODO)                         *
-   ***************************************************************************/
-  /**
-   * Some things I've been considering:
-   * 1) a//b becomes a/descendant::b if there's no predicate that uses
-   *    position() or last()
-   * 2) axis[pred]: when pred doesn't use position, evaluate it just once per
-   *    node in the node-set rather than once per (node, position, last).
-   * For more optimizations, look up Gecko's optimizer:
-   * http://mxr.mozilla.org/mozilla-central/source/content/xslt/src/xpath/txXPathOptimizer.cpp
-   */
-  // TODO
-  function optimize(ast) {
-  }
-
-  /***************************************************************************
-   *                           Evaluation: axes                              *
-   ***************************************************************************/
-
-  /**
-   * Data types: For string, number, boolean, we just use Javascript types.
-   * Node-sets have the form
-   *    {nodes: [node, ...]}
-   * or {nodes: [node, ...], pos: [[1], [2], ...], lasts: [[1], [2], ...]}
-   *
-   * Most of the time, only the node is used and the position information is
-   * discarded. But if you use a predicate, we need to try every value of
-   * position and last in case the predicate calls position() or last().
-   */
-
-  /**
-   * The NodeMultiSet is a helper class to help generate
-   * {nodes:[], pos:[], lasts:[]} structures. It is useful for the
-   * descendant, descendant-or-self, following-sibling, and
-   * preceding-sibling axes for which we can use a stack to organize things.
-   */
-  function NodeMultiSet(isReverseAxis) {
-    this.nodes = [];
-    this.pos = [];
-    this.lasts = [];
-    this.nextPos = [];
-    this.seriesIndexes = [];  // index within nodes that each series begins.
-    this.isReverseAxis = isReverseAxis;
-    this._pushToNodes = isReverseAxis ? Array.prototype.unshift : Array.prototype.push;
-  }
-  NodeMultiSet.prototype = {
-    pushSeries: function pushSeries() {
-      this.nextPos.push(1);
-      this.seriesIndexes.push(this.nodes.length);
-    },
-    popSeries: function popSeries() {
-      console.assert(0 < this.nextPos.length, this.nextPos);
-      var last = this.nextPos.pop() - 1,
-          indexInPos = this.nextPos.length,
-          seriesBeginIndex = this.seriesIndexes.pop(),
-          seriesEndIndex = this.nodes.length;
-      for (var i = seriesBeginIndex; i < seriesEndIndex; ++i) {
-        console.assert(indexInPos < this.lasts[i].length);
-        console.assert(undefined === this.lasts[i][indexInPos]);
-        this.lasts[i][indexInPos] = last;
-      }
-    },
-    finalize: function() {
-      if (null == this.nextPos) return this;
-      console.assert(0 === this.nextPos.length);
-      for (var i = 0; i < this.lasts.length; ++i) {
-        for (var j = 0; j < this.lasts[i].length; ++j) {
-          console.assert(null != this.lasts[i][j], i + ',' + j + ':' + JSON.stringify(this.lasts));
-        }
-      }
-      this.pushSeries = this.popSeries = this.addNode = function() {
-        throw new Error('Already finalized.');
-      };
-      return this;
-    },
-    addNode: function addNode(node) {
-      console.assert(node);
-      this._pushToNodes.call(this.nodes, node)
-      this._pushToNodes.call(this.pos, this.nextPos.slice());
-      this._pushToNodes.call(this.lasts, new Array(this.nextPos.length));
-      for (var i = 0; i < this.nextPos.length; ++i) this.nextPos[i]++;
-    },
-    simplify: function() {
-      this.finalize();
-      return {nodes:this.nodes, pos:this.pos, lasts:this.lasts};
-    }
-  };
-  function eachContext(nodeMultiSet) {
-    var r = [];
-    for (var i = 0; i < nodeMultiSet.nodes.length; i++) {
-      var node = nodeMultiSet.nodes[i];
-      if (!nodeMultiSet.pos) {
-        r.push({nodes:[node], pos: [[i + 1]], lasts: [[nodeMultiSet.nodes.length]]});
-      } else {
-        for (var j = 0; j < nodeMultiSet.pos[i].length; ++j) {
-          r.push({nodes:[node], pos: [[nodeMultiSet.pos[i][j]]], lasts: [[nodeMultiSet.lasts[i][j]]]});
-        }
-      }
-    }
-    return r;
-  }
-  /** Matcher used in the axes.
-   */
-  function NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase) {
-    this.nodeTypeNum = nodeTypeNum;
-    this.nodeName = nodeName;
-    this.shouldLowerCase = shouldLowerCase;
-    this.nodeNameTest =
-      null == nodeName ? this._alwaysTrue :
-      shouldLowerCase ? this._nodeNameLowerCaseEquals :
-      this._nodeNameEquals;
-  }
-  NodeMatcher.prototype = {
-    matches: function matches(node) {
-      return (0 === this.nodeTypeNum || node.nodeType === this.nodeTypeNum) &&
-          this.nodeNameTest(node.nodeName);
-    },
-    _alwaysTrue: function(name) {return true;},
-    _nodeNameEquals: function _nodeNameEquals(name) {
-      return this.nodeName === name;
-    },
-    _nodeNameLowerCaseEquals: function _nodeNameLowerCaseEquals(name) {
-      return this.nodeName === name.toLowerCase();
-    }
-  };
-
-  function followingSiblingHelper(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase, shift, peek, followingNode, andSelf, isReverseAxis) {
-    var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-    var nodeMultiSet = new NodeMultiSet(isReverseAxis);
-    while (0 < nodeList.length) {  // can be if for following, preceding
-      var node = shift.call(nodeList);
-      console.assert(node != null);
-      node = followingNode(node);
-      nodeMultiSet.pushSeries();
-      var numPushed = 1;
-      while (null != node) {
-        if (! andSelf && matcher.matches(node))
-          nodeMultiSet.addNode(node);
-        if (node === peek.call(nodeList)) {
-          shift.call(nodeList);
-          nodeMultiSet.pushSeries();
-          numPushed++;
-        }
-        if (andSelf && matcher.matches(node))
-          nodeMultiSet.addNode(node);
-        node = followingNode(node);
-      }
-      while (0 < numPushed--)
-        nodeMultiSet.popSeries();
-    }
-    return nodeMultiSet;
-  }
-
-  /** Returns the next non-descendant node in document order.
-   * This is the first node in following::node(), if node is the context.
-   */
-  function followingNonDescendantNode(node) {
-    if (node.ownerElement) {
-      if (node.ownerElement.firstChild)
-        return node.ownerElement.firstChild;
-      node = node.ownerElement;
-    }
-    do {
-      if (node.nextSibling) return node.nextSibling;
-    } while (node = node.parentNode);
-    return null;
-  }
-
-  /** Returns the next node in a document-order depth-first search.
-   * See the definition of document order[1]:
-   *   1) element
-   *   2) namespace nodes
-   *   3) attributes
-   *   4) children
-   *   [1]: http://www.w3.org/TR/xpath/#dt-document-order
-   */
-  function followingNode(node) {
-    if (node.ownerElement)  // attributes: following node of element.
-      node = node.ownerElement;
-    if (null != node.firstChild)
-      return node.firstChild;
-    do {
-      if (null != node.nextSibling) {
-        return node.nextSibling;
-      }
-      node = node.parentNode;
-    } while (node);
-    return null;
-  }
-  /** Returns the previous node in document order (excluding attributes
-   * and namespace nodes).
-   */
-  function precedingNode(node) {
-    if (node.ownerElement)
-      return node.ownerElement;
-    if (null != node.previousSibling) {
-      node = node.previousSibling;
-      while (null != node.lastChild) {
-        node = node.lastChild;
-      }
-      return node;
-    }
-    if (null != node.parentNode) {
-      return node.parentNode;
-    }
-    return null;
-  }
-  /** This axis is inefficient if there are many nodes in the nodeList.
-   * But I think it's a pretty useless axis so it's ok. */
-  function followingHelper(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-    var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-    var nodeMultiSet = new NodeMultiSet(false);
-    var cursor = nodeList[0];
-    var unorderedFollowingStarts = [];
-    for (var i = 0; i < nodeList.length; i++) {
-      var node = nodeList[i];
-      var start = followingNonDescendantNode(node);
-      if (start)
-        unorderedFollowingStarts.push(start);
-    }
-    if (0 === unorderedFollowingStarts.length)
-      return {nodes:[]};
-    var pos = [], nextPos = [];
-    var started = 0;
-    while (cursor = followingNode(cursor)) {
-      for (var i = unorderedFollowingStarts.length - 1; i >= 0; i--){
-        if (cursor === unorderedFollowingStarts[i]) {
-          nodeMultiSet.pushSeries();
-          unorderedFollowingStarts.splice(i,i+1);
-          started++;
-        }
-      }
-      if (started && matcher.matches(cursor)) {
-        nodeMultiSet.addNode(cursor);
-      }
-    }
-    console.assert(0 === unorderedFollowingStarts.length);
-    for (var i = 0; i < started; i++)
-      nodeMultiSet.popSeries();
-    return nodeMultiSet.finalize();
-  }
-  function precedingHelper(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-    var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-    var cursor = nodeList.pop();
-    if (null == cursor) return {nodes:{}};
-    var r = {nodes:[], pos:[], lasts:[]};
-    var nextParents = [cursor.parentNode || cursor.ownerElement], nextPos = [1];
-    while (cursor = precedingNode(cursor)) {
-      if (cursor === nodeList[nodeList.length - 1]) {
-        nextParents.push(nodeList.pop());
-        nextPos.push(1);
-      }
-      var matches = matcher.matches(cursor);
-      var pos, someoneUsed = false;
-      if (matches)
-        pos = nextPos.slice();
-
-      for (var i = 0; i < nextParents.length; ++i) {
-        if (cursor === nextParents[i]) {
-          nextParents[i] = cursor.parentNode || cursor.ownerElement;
-          if (matches) {
-            pos[i] = null;
-          }
-        } else {
-          if (matches) {
-            pos[i] = nextPos[i]++;
-            someoneUsed = true;
-          }
-        }
-      }
-      if (someoneUsed) {
-        r.nodes.unshift(cursor);
-        r.pos.unshift(pos);
-      }
-    }
-    for (var i = 0; i < r.pos.length; ++i) {
-      var lasts = [];
-      r.lasts.push(lasts);
-      for (var j = r.pos[i].length - 1; j >= 0; j--) {
-        if (null == r.pos[i][j]) {
-          r.pos[i].splice(j, j+1);
-        } else {
-          lasts.unshift(nextPos[j] - 1);
-        }
-      }
-    }
-    return r;
-  }
-
-  /** node-set, axis -> node-set */
-  function descendantDfs(nodeMultiSet, node, remaining, matcher, andSelf, attrIndices, attrNodes) {
-    while (0 < remaining.length && null != remaining[0].ownerElement) {
-      var attr = remaining.shift();
-      if (andSelf && matcher.matches(attr)) {
-        attrNodes.push(attr);
-        attrIndices.push(nodeMultiSet.nodes.length);
-      }
-    }
-    if (null != node && !andSelf) {
-      if (matcher.matches(node))
-        nodeMultiSet.addNode(node);
-    }
-    var pushed = false;
-    if (null == node) {
-      if (0 === remaining.length) return;
-      node = remaining.shift();
-      nodeMultiSet.pushSeries();
-      pushed = true;
-    } else if (0 < remaining.length && node === remaining[0]) {
-      nodeMultiSet.pushSeries();
-      pushed = true;
-      remaining.shift();
-    }
-    if (andSelf) {
-      if (matcher.matches(node))
-        nodeMultiSet.addNode(node);
-    }
-    // TODO: use optimization. Also try element.getElementsByTagName
-    // var nodeList = 1 === nodeTypeNum && null != node.children ? node.children : node.childNodes;
-    var nodeList = node.childNodes;
-    for (var j = 0; j < nodeList.length; ++j) {
-      var child = nodeList[j];
-      descendantDfs(nodeMultiSet, child, remaining, matcher, andSelf, attrIndices, attrNodes);
-    }
-    if (pushed) {
-      nodeMultiSet.popSeries();
-    }
-  }
-  function descenantHelper(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase, andSelf) {
-    var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-    var nodeMultiSet = new NodeMultiSet(false);
-    var attrIndices = [], attrNodes = [];
-    while (0 < nodeList.length) {
-      // var node = nodeList.shift();
-      descendantDfs(nodeMultiSet, null, nodeList, matcher, andSelf, attrIndices, attrNodes);
-    }
-    nodeMultiSet.finalize();
-    for (var i = attrNodes.length-1; i >= 0; --i) {
-      nodeMultiSet.nodes.splice(attrIndices[i], attrIndices[i], attrNodes[i]);
-      nodeMultiSet.pos.splice(attrIndices[i], attrIndices[i], [1]);
-      nodeMultiSet.lasts.splice(attrIndices[i], attrIndices[i], [1]);
-    }
-    return nodeMultiSet;
-  }
-  /**
-   */
-  function ancestorHelper(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase, andSelf) {
-    var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-    var ancestors = []; // array of non-empty arrays of matching ancestors
-    for (var i = 0; i < nodeList.length; ++i) {
-      var node = nodeList[i];
-      var isFirst = true;
-      var a = [];
-      while (null != node) {
-        if (!isFirst || andSelf) {
-          if (matcher.matches(node))
-            a.push(node);
-        }
-        isFirst = false;
-        node = node.parentNode || node.ownerElement;
-      }
-      if (0 < a.length)
-        ancestors.push(a);
-    }
-    var lasts = [];
-    for (var i = 0; i < ancestors.length; ++i) lasts.push(ancestors[i].length);
-    var nodeMultiSet = new NodeMultiSet(true);
-    var newCtx = {nodes:[], pos:[], lasts:[]};
-    while (0 < ancestors.length) {
-      var pos = [ancestors[0].length];
-      var last = [lasts[0]];
-      var node = ancestors[0].pop();
-      for (var i = ancestors.length - 1; i > 0; --i) {
-        if (node === ancestors[i][ancestors[i].length - 1]) {
-          pos.push(ancestors[i].length);
-          last.push(lasts[i]);
-          ancestors[i].pop();
-          if (0 === ancestors[i].length) {
-            ancestors.splice(i, i+1);
-            lasts.splice(i, i+1);
-          }
-        }
-      }
-      if (0 === ancestors[0].length) {
-        ancestors.shift();
-        lasts.shift();
-      }
-      newCtx.nodes.push(node);
-      newCtx.pos.push(pos);
-      newCtx.lasts.push(last);
-    }
-    return newCtx;
-  }
-  /** Helper function for sortDocumentOrder. Returns a list of indices, from the
-   * node to the root, of positions within parent.
-   * For convenience, the node is the first element of the array.
-   */
-  function addressVector(node) {
-    var r = [node];
-    if (null != node.ownerElement) {
-      node = node.ownerElement;
-      r.push(-1);
-    }
-    while (null != node) {
-      var i = 0;
-      while (null != node.previousSibling) {
-        node = node.previousSibling;
-        i++;
-      }
-      r.push(i);
-      node = node.parentNode
-    }
-    return r;
-  }
-  function addressComparator(a, b) {
-    var minlen = Math.min(a.length - 1, b.length - 1),  // not including [0]=node
-        alen = a.length,
-        blen = b.length;
-    if (a[0] === b[0]) return 0;
-    var c;
-    for (var i = 0; i < minlen; ++i) {
-      c = a[alen - i - 1] - b[blen - i - 1];
-      if (0 !== c)
-        break;
-    }
-    if (null == c || 0 === c) {
-      // All equal until one of the nodes. The longer one is the descendant.
-      c = alen - blen;
-    }
-    if (0 === c)
-      c = a.nodeName - b.nodeName;
-    if (0 === c)
-      c = 1;
-    return c;
-  }
-  var sortUniqDocumentOrder = xpath.sortUniqDocumentOrder = function(nodes) {
-    var a = [];
-    for (var i = 0; i < nodes.length; i++) {
-      var node = nodes[i];
-      var v = addressVector(node);
-      a.push(v);
-    }
-    a.sort(addressComparator);
-    var b = [];
-    for (var i = 0; i < a.length; i++) {
-      if (0 < i && a[i][0] === a[i - 1][0])
-        continue;
-      b.push(a[i][0]);
-    }
-    return b;
-  }
-  /** Sort node multiset. Does not do any de-duping. */
-  function sortNodeMultiSet(nodeMultiSet) {
-    var a = [];
-    for (var i = 0; i < nodeMultiSet.nodes.length; i++) {
-      var v = addressVector(nodeMultiSet.nodes[i]);
-      a.push({v:v, n:nodeMultiSet.nodes[i],
-              p:nodeMultiSet.pos[i], l:nodeMultiSet.lasts[i]});
-    }
-    a.sort(compare);
-    var r = {nodes:[], pos:[], lasts:[]};
-    for (var i = 0; i < a.length; ++i) {
-      r.nodes.push(a[i].n);
-      r.pos.push(a[i].p);
-      r.lasts.push(a[i].l);
-    }
-    function compare(x, y) {
-      return addressComparator(x.v, y.v);
-    }
-    return r;
-  }
-  /** Returns an array containing all the ancestors down to a node.
-   * The array starts with document.
-   */
-  function nodeAndAncestors(node) {
-    var ancestors = [node];
-    var p = node;
-    while (p = p.parentNode || p.ownerElement) {
-      ancestors.unshift(p);
-    }
-    return ancestors;
-  }
-  function compareSiblings(a, b) {
-    if (a === b) return 0;
-    var c = a;
-    while (c = c.previousSibling) {
-      if (c === b)
-        return 1;  // b < a
-    }
-    c = b;
-    while (c = c.previousSibling) {
-      if (c === a)
-        return -1;  // a < b
-    }
-    throw new Error('a and b are not siblings: ' + xpath.stringifyObject(a) + ' vs ' + xpath.stringifyObject(b));
-  }
-  /** The merge in merge-sort.*/
-  function mergeNodeLists(x, y) {
-    var a, b, aanc, banc, r = [];
-    if ('object' !== typeof x)
-      throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                               'Invalid LHS for | operator ' +
-                               '(expected node-set): ' + x);
-    if ('object' !== typeof y)
-      throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                               'Invalid LHS for | operator ' +
-                               '(expected node-set): ' + y);
-    while (true) {
-      if (null == a) {
-        a = x.shift();
-        if (null != a)
-          aanc = addressVector(a);
-      }
-      if (null == b) {
-        b = y.shift();
-        if (null != b)
-          banc = addressVector(b);
-      }
-      if (null == a || null == b) break;
-      var c = addressComparator(aanc, banc);
-      if (c < 0) {
-        r.push(a);
-        a = null;
-        aanc = null;
-      } else if (c > 0) {
-        r.push(b);
-        b = null;
-        banc = null;
-      } else if (a.nodeName < b.nodeName) {  // attributes
-        r.push(a);
-        a = null;
-        aanc = null;
-      } else if (a.nodeName > b.nodeName) {  // attributes
-        r.push(b);
-        b = null;
-        banc = null;
-      } else if (a !== b) {
-        // choose b arbitrarily
-        r.push(b);
-        b = null;
-        banc = null;
-      } else {
-        console.assert(a === b, c);
-        // just skip b without pushing it.
-        b = null;
-        banc = null;
-      }
-    }
-    while (a) {
-      r.push(a);
-      a = x.shift();
-    }
-    while (b) {
-      r.push(b);
-      b = y.shift();
-    }
-    return r;
-  }
-  function comparisonHelper(test, x, y, isNumericComparison) {
-    var coersion;
-    if (isNumericComparison)
-      coersion = fn.number;
-    else coersion =
-      'boolean' === typeof x || 'boolean' === typeof y ? fn['boolean'] :
-      'number' === typeof x || 'number' === typeof y ? fn.number :
-      fn.string;
-    if ('object' === typeof x && 'object' === typeof y) {
-      var aMap = {};
-      for (var i = 0; i < x.nodes.length; ++i) {
-        var xi = coersion({nodes:[x.nodes[i]]});
-        for (var j = 0; j < y.nodes.length; ++j) {
-          var yj = coersion({nodes:[y.nodes[j]]});
-          if (test(xi, yj)) return true;
-        }
-      }
-      return false;
-    } else if ('object' === typeof x && x.nodes && x.nodes.length) {
-      for (var i = 0; i < x.nodes.length; ++i) {
-        var xi = coersion({nodes:[x.nodes[i]]}), yc = coersion(y);
-        if (test(xi, yc))
-          return true;
-      }
-      return false;
-    } else if ('object' === typeof y && x.nodes && x.nodes.length) {
-      for (var i = 0; i < x.nodes.length; ++i) {
-        var yi = coersion({nodes:[y.nodes[i]]}), xc = coersion(x);
-        if (test(xc, yi))
-          return true;
-      }
-      return false;
-    } else {
-      var xc = coersion(x), yc = coersion(y);
-      return test(xc, yc);
-    }
-  }
-  var axes = xpath.axes = {
-    'ancestor':
-      function ancestor(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return ancestorHelper(
-          nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase, false);
-      },
-    'ancestor-or-self':
-      function ancestorOrSelf(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return ancestorHelper(
-          nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase, true);
-      },
-    'attribute':
-      function attribute(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        // TODO: figure out whether positions should be undefined here.
-        var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-        var nodeMultiSet = new NodeMultiSet(false);
-        if (null != nodeName) {
-          // TODO: with namespace
-          for (var i = 0; i < nodeList.length; ++i) {
-            var node = nodeList[i];
-            if (null == node.getAttributeNode)
-              continue;  // only Element has .getAttributeNode
-            var attr = node.getAttributeNode(nodeName);
-            if (null != attr && matcher.matches(attr)) {
-              nodeMultiSet.pushSeries();
-              nodeMultiSet.addNode(attr);
-              nodeMultiSet.popSeries();
-            }
-          }
-        } else {
-          for (var i = 0; i < nodeList.length; ++i) {
-            var node = nodeList[i];
-            if (null != node.attributes) {
-              nodeMultiSet.pushSeries();
-              for (var j = 0; j < node.attributes.length; j++) {  // all nodes have .attributes
-                var attr = node.attributes[j];
-                if (matcher.matches(attr))  // TODO: I think this check is unnecessary
-                  nodeMultiSet.addNode(attr);
-              }
-              nodeMultiSet.popSeries();
-            }
-          }
-        }
-        return nodeMultiSet.finalize();
-      },
-    'child':
-      function child(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-        var nodeMultiSet = new NodeMultiSet(false);
-        for (var i = 0; i < nodeList.length; ++i) {
-          var n = nodeList[i];
-          if (n.ownerElement)  // skip attribute nodes' text child.
-            continue;
-          if (n.childNodes) {
-            nodeMultiSet.pushSeries();
-            var childList = 1 === nodeTypeNum && null != n.children ?
-                n.children : n.childNodes;
-            for (var j = 0; j < childList.length; ++j) {
-              var child = childList[j];
-              if (matcher.matches(child)) {
-                nodeMultiSet.addNode(child);
-              }
-              // don't have to do de-duping because children have parent,
-              // which are current context.
-            }
-            nodeMultiSet.popSeries();
-          }
-        }
-        nodeMultiSet.finalize();
-        return sortNodeMultiSet(nodeMultiSet);
-      },
-    'descendant':
-      function descenant(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return descenantHelper(
-          nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase, false);
-      },
-    'descendant-or-self':
-      function descenantOrSelf(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return descenantHelper(
-          nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase, true);
-      },
-    'following':
-      function following(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return followingHelper(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase);
-      },
-    'following-sibling':
-      function followingSibling(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return followingSiblingHelper(
-          nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase,
-          Array.prototype.shift, function() {return this[0];},
-          function(node) {return node.nextSibling;});
-      },
-    'namespace':
-      function namespace(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        // TODO
-      },
-    'parent':
-      function parent(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-        var nodes = [], pos = [];
-        for (var i = 0; i < nodeList.length; ++i) {
-          var parent = nodeList[i].parentNode || nodeList[i].ownerElement;
-          if (null == parent)
-            continue;
-          if (!matcher.matches(parent))
-            continue;
-          if (nodes.length > 0 && parent === nodes[nodes.length-1])
-            continue;
-          nodes.push(parent);
-          pos.push([1]);
-        }
-        return {nodes:nodes, pos:pos, lasts:pos};
-      },
-    'preceding':
-      function preceding(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return precedingHelper(
-          nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase);
-      },
-    'preceding-sibling':
-      function precedingSibling(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        return followingSiblingHelper(
-          nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase,
-          Array.prototype.pop, function() {return this[this.length-1];},
-          function(node) {return node.previousSibling},
-          false, true);
-      },
-    'self':
-      function self(nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase) {
-        var nodes = [], pos = [];
-        var matcher = new NodeMatcher(nodeTypeNum, nodeName, shouldLowerCase);
-        for (var i = 0; i < nodeList.length; ++i) {
-          if (matcher.matches(nodeList[i])) {
-            nodes.push(nodeList[i]);
-            pos.push([1]);
-          }
-        }
-        return {nodes: nodes, pos: pos, lasts: pos}
-      }
-  };
-
-  /***************************************************************************
-   *                         Evaluation: functions                           *
-   ***************************************************************************/
-  var fn = {
-    'number': function number(optObject) {
-      if ('number' === typeof optObject)
-        return optObject;
-      if ('string' === typeof optObject)
-        return parseFloat(optObject);  // note: parseFloat(' ') -> NaN, unlike +' ' -> 0.
-      if ('boolean' === typeof optObject)
-        return +optObject;
-      return fn.number(fn.string.call(this, optObject));  // for node-sets
-    },
-    'string': function string(optObject) {
-      if (null == optObject)
-        return fn.string(this);
-      if ('string' === typeof optObject || 'boolean' === typeof optObject ||
-          'number' === typeof optObject)
-        return '' + optObject;
-      if (0 == optObject.nodes.length) return '';
-      if (null != optObject.nodes[0].textContent)
-        return optObject.nodes[0].textContent;
-      return optObject.nodes[0].nodeValue;
-    },
-    'boolean': function booleanVal(x) {
-      return 'object' === typeof x ? x.nodes.length > 0 : !!x;
-    },
-    'last': function last() {
-      console.assert(Array.isArray(this.pos));
-      console.assert(Array.isArray(this.lasts));
-      console.assert(1 === this.pos.length);
-      console.assert(1 === this.lasts.length);
-      console.assert(1 === this.lasts[0].length);
-      return this.lasts[0][0];
-    },
-    'position': function position() {
-      console.assert(Array.isArray(this.pos));
-      console.assert(Array.isArray(this.lasts));
-      console.assert(1 === this.pos.length);
-      console.assert(1 === this.lasts.length);
-      console.assert(1 === this.pos[0].length);
-      return this.pos[0][0];
-    },
-    'count': function count(nodeSet) {
-      if ('object' !== typeof nodeSet)
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Position ' + stream.position() +
-                                 ': Function count(node-set) ' +
-                                 'got wrong argument type: ' + nodeSet);
-      return nodeSet.nodes.length;
-    },
-    'id': function id(object) {
-      var r = {nodes: []};
-      var doc = this.nodes[0].ownerDocument || this.nodes[0];
-      console.assert(doc);
-      var ids;
-      if ('object' === typeof object) {
-        // for node-sets, map id over each node value.
-        ids = [];
-        for (var i = 0; i < object.nodes.length; ++i) {
-          var idNode = object.nodes[i];
-          var idsString = fn.string({nodes:[idNode]});
-          var a = idsString.split(/[ \t\r\n]+/g);
-          Array.prototype.push.apply(ids, a);
-        }
-      } else {
-        var idsString = fn.string(object);
-        var a = idsString.split(/[ \t\r\n]+/g);
-        ids = a;
-      }
-      for (var i = 0; i < ids.length; ++i) {
-        var id = ids[i];
-        if (0 === id.length)
-          continue;
-        var node = doc.getElementById(id);
-        if (null != node)
-          r.nodes.push(node);
-      }
-      r.nodes = sortUniqDocumentOrder(r.nodes);
-      return r;
-    },
-    'local-name': function(nodeSet) {
-      if (null == nodeSet)
-        return fn.name(this);
-      if (null == nodeSet.nodes) {
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'argument to name() must be a node-set. got ' + nodeSet);
-      }
-      // TODO: namespaced version
-      return nodeSet.nodes[0].nodeName.toLowerCase();  // TODO: no toLowerCase for xml
-    },
-    'namespace-uri': function(nodeSet) {
-      // TODO
-      throw new Error('not implemented yet');
-    },
-    'name': function(nodeSet) {
-      if (null == nodeSet)
-        return fn.name(this);
-      if (null == nodeSet.nodes) {
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'argument to name() must be a node-set. got ' + nodeSet);
-      }
-      return nodeSet.nodes[0].nodeName.toLowerCase();  // TODO: no toLowerCase for xml
-    },
-    'concat': function concat(x) {
-      var l = [];
-      for (var i = 0; i < arguments.length; ++i) {
-        l.push(fn.string(arguments[i]));
-      }
-      return l.join('');
-    },
-    'starts-with': function startsWith(a, b) {
-      var as = fn.string(a), bs = fn.string(b);
-      return as.substr(0, bs.length) === bs;
-    },
-    'contains': function contains(a, b) {
-      var as = fn.string(a), bs = fn.string(b);
-      var i = as.indexOf(bs);
-      if (-1 === i) return false;
-      return true;
-    },
-    'substring-before': function substringBefore(a, b) {
-      var as = fn.string(a), bs = fn.string(b);
-      var i = as.indexOf(bs);
-      if (-1 === i) return '';
-      return as.substr(0, i);
-    },
-    'substring-after': function substringBefore(a, b) {
-      var as = fn.string(a), bs = fn.string(b);
-      var i = as.indexOf(bs);
-      if (-1 === i) return '';
-      return as.substr(i + bs.length);
-    },
-    'substring': function substring(string, start, optEnd) {
-      if (null == string || null == start) {
-        throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                 'Must be at least 2 arguments to string()');
-      }
-      var sString = fn.string(string),
-          iStart = fn.round(start),
-          iEnd = optEnd == null ? null : fn.round(optEnd);
-      // Note that xpath string positions user 1-based index
-      if (iEnd == null)
-        return sString.substr(iStart - 1);
-      else
-        return sString.substr(iStart - 1, iEnd);
-    },
-    'string-length': function stringLength(optString) {
-      return fn.string.call(this, optString).length;
-    },
-    'normalize-space': function normalizeSpace(optString) {
-      var s = fn.string.call(this, optString);
-      return s.replace(/[ \t\r\n]+/g, ' ').replace(/^ | $/g, '');
-    },
-    'translate': function translate(string, from, to) {
-      var sString = fn.string.call(this, string),
-          sFrom = fn.string(from),
-          sTo = fn.string(to);
-      var eachCharRe = [];
-      var map = {};
-      for (var i = 0; i < sFrom.length; ++i) {
-        var c = sFrom.charAt(i);
-        map[c] = sTo.charAt(i);  // returns '' if beyond length of sTo.
-        // copied from goog.string.regExpEscape in the Closure library.
-        eachCharRe.push(
-          c.replace(/([-()\[\]{}+?*.$\^|,:#<!\\])/g, '\\$1').
-            replace(/\x08/g, '\\x08'));
-      }
-      var re = new RegExp(eachCharRe.join('|'), 'g');
-      return sString.replace(re, function(c) {return map[c];});
-    },
-    /// Boolean functions
-    'not': function not(x) {
-      var bx = fn['boolean'](x);
-      return !bx;
-    },
-    'true': function trueVal() { return true; },
-    'false': function falseVal() { return false; },
-    // TODO
-    'lang': function lang(string) { throw new Error('Not implemented');},
-    'sum': function sum(optNodeSet) {
-      if (null == optNodeSet) return fn.sum(this);
-      // for node-sets, map id over each node value.
-      var sum = 0;
-      for (var i = 0; i < optNodeSet.nodes.length; ++i) {
-        var node = optNodeSet.nodes[i];
-        var x = fn.number({nodes:[node]});
-        sum += x;
-      }
-      return sum;
-    },
-    'floor': function floor(number) {
-      return Math.floor(fn.number(number));
-    },
-    'ceiling': function ceiling(number) {
-      return Math.ceil(fn.number(number));
-    },
-    'round': function round(number) {
-      return Math.round(fn.number(number));
-    }
-  };
-  /***************************************************************************
-   *                         Evaluation: operators                           *
-   ***************************************************************************/
-  var more = {
-    UnaryMinus: function(x) { return -fn.number(x); },
-    '+': function(x, y) { return fn.number(x) + fn.number(y); },
-    '-': function(x, y) { return fn.number(x) - fn.number(y); },
-    '*': function(x, y) { return fn.number(x) * fn.number(y); },
-    'div': function(x, y) { return fn.number(x) / fn.number(y); },
-    'mod': function(x, y) { return fn.number(x) % fn.number(y); },
-    '<': function(x, y) {
-      return comparisonHelper(function(x, y) { return fn.number(x) < fn.number(y);}, x, y, true);
-    },
-    '<=': function(x, y) {
-      return comparisonHelper(function(x, y) { return fn.number(x) <= fn.number(y);}, x, y, true);
-    },
-    '>':  function(x, y) {
-      return comparisonHelper(function(x, y) { return fn.number(x) > fn.number(y);}, x, y, true);
-    },
-    '>=': function(x, y) {
-      return comparisonHelper(function(x, y) { return fn.number(x) >= fn.number(y);}, x, y, true);
-    },
-    'and': function(x, y) { return fn['boolean'](x) && fn['boolean'](y); },
-    'or': function(x, y) { return fn['boolean'](x) || fn['boolean'](y); },
-    '|': function(x, y) { return {nodes: mergeNodeLists(x.nodes, y.nodes)}; },
-    '=': function(x, y) {
-      // optimization for two node-sets case: avoid n^2 comparisons.
-      if ('object' === typeof x && 'object' === typeof y) {
-        var aMap = {};
-        for (var i = 0; i < x.nodes.length; ++i) {
-          var s = fn.string({nodes:[x.nodes[i]]});
-          aMap[s] = true;
-        }
-        for (var i = 0; i < y.nodes.length; ++i) {
-          var s = fn.string({nodes:[y.nodes[i]]});
-          if (aMap[s]) return true;
-        }
-        return false;
-      } else {
-        return comparisonHelper(function(x, y) {return x === y;}, x, y);
-      }
-    },
-    '!=': function(x, y) {
-      // optimization for two node-sets case: avoid n^2 comparisons.
-      if ('object' === typeof x && 'object' === typeof y) {
-        if (0 === x.nodes.length || 0 === y.nodes.length) return false;
-        var aMap = {};
-        for (var i = 0; i < x.nodes.length; ++i) {
-          var s = fn.string({nodes:[x.nodes[i]]});
-          aMap[s] = true;
-        }
-        for (var i = 0; i < y.nodes.length; ++i) {
-          var s = fn.string({nodes:[y.nodes[i]]});
-          if (!aMap[s]) return true;
-        }
-        return false;
-      } else {
-        return comparisonHelper(function(x, y) {return x !== y;}, x, y);
-      }
-    }
-  };
-  var nodeTypes = xpath.nodeTypes = {
-    'node': 0,
-    'attribute': 2,
-    'comment': 8, // this.doc.COMMENT_NODE,
-    'text': 3, // this.doc.TEXT_NODE,
-    'processing-instruction': 7, // this.doc.PROCESSING_INSTRUCTION_NODE,
-    'element': 1  //this.doc.ELEMENT_NODE
-  };
-  /** For debugging and unit tests: returnjs a stringified version of the
-   * argument. */
-  var stringifyObject = xpath.stringifyObject = function stringifyObject(ctx) {
-    var seenKey = 'seen' + Math.floor(Math.random()*1000000000);
-    return JSON.stringify(helper(ctx));
-
-    function helper(ctx) {
-      if (Array.isArray(ctx)) {
-        return ctx.map(function(x) {return helper(x);});
-      }
-      if ('object' !== typeof ctx) return ctx;
-      if (null == ctx) return ctx;
-    //  if (ctx.toString) return ctx.toString();
-      if (null != ctx.outerHTML) return ctx.outerHTML;
-      if (null != ctx.nodeValue) return ctx.nodeName + '=' + ctx.nodeValue;
-      if (ctx[seenKey]) return '[circular]';
-      ctx[seenKey] = true;
-      var nicer = {};
-      for (var key in ctx) {
-        if (seenKey === key)
-          continue;
-        try {
-          nicer[key] = helper(ctx[key]);
-        } catch (e) {
-          nicer[key] = '[exception: ' + e.message + ']';
-        }
-      }
-      delete ctx[seenKey];
-      return nicer;
-    }
-  }
-  var Evaluator = xpath.Evaluator = function Evaluator(doc) {
-    this.doc = doc;
-  }
-  Evaluator.prototype = {
-    val: function val(ast, ctx) {
-      console.assert(ctx.nodes);
-
-      if ('number' === typeof ast || 'string' === typeof ast) return ast;
-      if (more[ast[0]]) {
-        var evaluatedParams = [];
-        for (var i = 1; i < ast.length; ++i) {
-          evaluatedParams.push(this.val(ast[i], ctx));
-        }
-        var r = more[ast[0]].apply(ctx, evaluatedParams);
-        return r;
-      }
-      switch (ast[0]) {
-        case 'Root': return {nodes: [this.doc]};
-        case 'FunctionCall':
-          var functionName = ast[1], functionParams = ast[2];
-          if (null == fn[functionName])
-            throw new XPathException(XPathException.INVALID_EXPRESSION_ERR,
-                                     'Unknown function: ' + functionName);
-          var evaluatedParams = [];
-          for (var i = 0; i < functionParams.length; ++i) {
-            evaluatedParams.push(this.val(functionParams[i], ctx));
-          }
-          var r = fn[functionName].apply(ctx, evaluatedParams);
-          return r;
-        case 'Predicate':
-          var lhs = this.val(ast[1], ctx);
-          var ret = {nodes: []};
-          var contexts = eachContext(lhs);
-          for (var i = 0; i < contexts.length; ++i) {
-            var singleNodeSet = contexts[i];
-            var rhs = this.val(ast[2], singleNodeSet);
-            var success;
-            if ('number' === typeof rhs) {
-              success = rhs === singleNodeSet.pos[0][0];
-            } else {
-              success = fn['boolean'](rhs);
-            }
-            if (success) {
-              var node = singleNodeSet.nodes[0];
-              ret.nodes.push(node);
-              // skip over all the rest of the same node.
-              while (i+1 < contexts.length && node === contexts[i+1].nodes[0]) {
-                i++;
-              }
-            }
-          }
-          return ret;
-        case 'PathExpr':
-          // turn the path into an expressoin; i.e., remove the position
-          // information of the last axis.
-          var x = this.val(ast[1], ctx);
-          // Make the nodeset a forward-direction-only one.
-          if (x.finalize) {  // it is a NodeMultiSet
-            for (var i = 0; i < x.nodes.length; ++i) {
-              console.assert(null != x.nodes[i].nodeType);
-            }
-            return {nodes: x.nodes};
-          } else {
-            return x;
-          }
-        case '/':
-          // TODO: don't generate '/' nodes, just Axis nodes.
-          var lhs = this.val(ast[1], ctx);
-          console.assert(null != lhs);
-          var r = this.val(ast[2], lhs);
-          console.assert(null != r);
-          return r;
-        case 'Axis':
-          // All the axis tests from Step. We only get AxisSpecifier NodeTest,
-          // not the predicate (which is applied later)
-          var axis = ast[1],
-              nodeType = ast[2],
-              nodeTypeNum = nodeTypes[nodeType],
-              shouldLowerCase = true,  // TODO: give option
-              nodeName = ast[3] && shouldLowerCase ? ast[3].toLowerCase() : ast[3];
-          nodeName = nodeName === '*' ? null : nodeName;
-          if ('object' !== typeof ctx) return {nodes:[], pos:[]};
-          var nodeList = ctx.nodes.slice();  // TODO: is copy needed?
-          var r = axes[axis](nodeList  /*destructive!*/, nodeTypeNum, nodeName, shouldLowerCase);
-          return r;
-      }
-    }
-  };
-  var evaluate = xpath.evaluate = function evaluate(expr, doc, context) {
-    //var astFactory = new AstEvaluatorFactory(doc, context);
-    var stream = new Stream(expr);
-    var ast = parse(stream, astFactory);
-    var val = new Evaluator(doc).val(ast, {nodes: [context]});
-    return val;
-  }
-
-  /***************************************************************************
-   *                           DOM interface                                 *
-   ***************************************************************************/
-  var XPathException = xpath.XPathException = function XPathException(code, message) {
-    var e = new Error(message);
-    e.name = 'XPathException';
-    e.code = code;
-    return e;
-  }
-  XPathException.INVALID_EXPRESSION_ERR = 51;
-  XPathException.TYPE_ERR = 52;
-
-
-  var XPathEvaluator = xpath.XPathEvaluator = function XPathEvaluator() {}
-  XPathEvaluator.prototype = {
-    createExpression: function(expression, resolver) {
-      return new XPathExpression(expression, resolver);
-    },
-    createNSResolver: function(nodeResolver) {
-      // TODO
-    },
-    evaluate: function evaluate(expression, contextNode, resolver, type, result) {
-      var expr = new XPathExpression(expression, resolver);
-      return expr.evaluate(contextNode, type, result);
-    }
-  };
-
-
-  var XPathExpression = xpath.XPathExpression = function XPathExpression(expression, resolver, optDoc) {
-    var stream = new Stream(expression);
-    this._ast = parse(stream, astFactory);
-    this._doc = optDoc;
-  }
-  XPathExpression.prototype = {
-    evaluate: function evaluate(contextNode, type, result) {
-      if (null == contextNode.nodeType)
-        throw new Error('bad argument (expected context node): ' + contextNode);
-      var doc = contextNode.ownerDocument || contextNode;
-      if (null != this._doc && this._doc !== doc) {
-        throw new core.DOMException(
-            core.WRONG_DOCUMENT_ERR,
-            'The document must be the same as the context node\'s document.');
-      }
-      var evaluator = new Evaluator(doc);
-      var value = evaluator.val(this._ast, {nodes: [contextNode]});
-      if (XPathResult.NUMBER_TYPE === type)
-        value = fn.number(value);
-      else if (XPathResult.STRING_TYPE === type)
-        value = fn.string(value);
-      else if (XPathResult.BOOLEAN_TYPE === type)
-        value = fn['boolean'](value);
-      else if (XPathResult.ANY_TYPE !== type &&
-               XPathResult.UNORDERED_NODE_ITERATOR_TYPE !== type &&
-               XPathResult.ORDERED_NODE_ITERATOR_TYPE !== type &&
-               XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE !== type &&
-               XPathResult.ORDERED_NODE_SNAPSHOT_TYPE !== type &&
-               XPathResult.ANY_UNORDERED_NODE_TYPE !== type &&
-               XPathResult.FIRST_ORDERED_NODE_TYPE !== type)
-        throw new core.DOMException(
-            core.NOT_SUPPORTED_ERR,
-            'You must provide an XPath result type (0=any).');
-      else if (XPathResult.ANY_TYPE !== type &&
-               'object' !== typeof value)
-        throw new XPathException(
-            XPathException.TYPE_ERR,
-            'Value should be a node-set: ' + value);
-      return new XPathResult(doc, value, type);
-    }
-  }
-
-  var XPathResult = xpath.XPathResult = function XPathResult(doc, value, resultType) {
-    this._value = value;
-    this._resultType = resultType;
-    this._i = 0;
-    this._invalidated = false;
-    if (this.resultType === XPathResult.UNORDERED_NODE_ITERATOR_TYPE ||
-        this.resultType === XPathResult.ORDERED_NODE_ITERATOR_TYPE) {
-      doc.addEventListener('DOMSubtreeModified', invalidate, true);
-      var self = this;
-      function invalidate() {
-        self._invalidated = true;
-        doc.removeEventListener('DOMSubtreeModified', invalidate, true);
-      }
-    }
-  }
-  XPathResult.ANY_TYPE = 0;
-  XPathResult.NUMBER_TYPE = 1;
-  XPathResult.STRING_TYPE = 2;
-  XPathResult.BOOLEAN_TYPE = 3;
-  XPathResult.UNORDERED_NODE_ITERATOR_TYPE = 4;
-  XPathResult.ORDERED_NODE_ITERATOR_TYPE = 5;
-  XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE = 6;
-  XPathResult.ORDERED_NODE_SNAPSHOT_TYPE = 7;
-  XPathResult.ANY_UNORDERED_NODE_TYPE = 8;
-  XPathResult.FIRST_ORDERED_NODE_TYPE = 9;
-  var proto = {
-    // XPathResultType
-    get resultType() {
-      if (this._resultType) return this._resultType;
-      switch (typeof this._value) {
-        case 'number': return XPathResult.NUMBER_TYPE;
-        case 'string': return XPathResult.STRING_TYPE;
-        case 'boolean': return XPathResult.BOOLEAN_TYPE;
-        default: return XPathResult.UNORDERED_NODE_ITERATOR_TYPE;
-      }
-    },
-    get numberValue() {
-      if (XPathResult.NUMBER_TYPE !== this.resultType)
-        throw new XPathException(XPathException.TYPE_ERR,
-                                 'You should have asked for a NUMBER_TYPE.');
-      return this._value;
-    },
-    get stringValue() {
-      if (XPathResult.STRING_TYPE !== this.resultType)
-        throw new XPathException(XPathException.TYPE_ERR,
-                                 'You should have asked for a STRING_TYPE.');
-      return this._value;
-    },
-    get booleanValue() {
-      if (XPathResult.BOOLEAN_TYPE !== this.resultType)
-        throw new XPathException(XPathException.TYPE_ERR,
-                                 'You should have asked for a BOOLEAN_TYPE.');
-      return this._value;
-    },
-    get singleNodeValue() {
-      if (XPathResult.ANY_UNORDERED_NODE_TYPE !== this.resultType &&
-          XPathResult.FIRST_ORDERED_NODE_TYPE !== this.resultType)
-        throw new XPathException(
-            XPathException.TYPE_ERR,
-            'You should have asked for a FIRST_ORDERED_NODE_TYPE.');
-      return this._value.nodes[0] || null;
-    },
-    get invalidIteratorState() {
-      if (XPathResult.UNORDERED_NODE_ITERATOR_TYPE !== this.resultType &&
-          XPathResult.ORDERED_NODE_ITERATOR_TYPE !== this.resultType)
-        return false;
-      return !!this._invalidated;
-    },
-    get snapshotLength() {
-      if (XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE !== this.resultType &&
-          XPathResult.ORDERED_NODE_SNAPSHOT_TYPE !== this.resultType)
-        throw new XPathException(
-            XPathException.TYPE_ERR,
-            'You should have asked for a ORDERED_NODE_SNAPSHOT_TYPE.');
-      return this._value.nodes.length;
-    },
-    iterateNext: function iterateNext() {
-      if (XPathResult.UNORDERED_NODE_ITERATOR_TYPE !== this.resultType &&
-          XPathResult.ORDERED_NODE_ITERATOR_TYPE !== this.resultType)
-        throw new XPathException(
-            XPathException.TYPE_ERR,
-            'You should have asked for a ORDERED_NODE_ITERATOR_TYPE.');
-      if (this.invalidIteratorState)
-        throw new core.DOMException(
-            core.INVALID_STATE_ERR,
-            'The document has been mutated since the result was returned');
-      return this._value.nodes[this._i++] || null;
-    },
-    snapshotItem: function snapshotItem(index) {
-      if (XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE !== this.resultType &&
-          XPathResult.ORDERED_NODE_SNAPSHOT_TYPE !== this.resultType)
-        throw new XPathException(
-            XPathException.TYPE_ERR,
-            'You should have asked for a ORDERED_NODE_SNAPSHOT_TYPE.');
-      return this._value.nodes[index] || null;
-    }
-  };
-  // so you can access ANY_TYPE etc. from the instances:
-  XPathResult.prototype = Object.create(XPathResult,
-      Object.keys(proto).reduce(function (descriptors, name) {
-        descriptors[name] = Object.getOwnPropertyDescriptor(proto, name);
-        return descriptors;
-      }, {
-        constructor: {
-          value: XPathResult,
-          writable: true,
-          configurable: true
-        }
-      }));
-
-  core.XPathException = XPathException;
-  core.XPathExpression = XPathExpression;
-  core.XPathResult = XPathResult;
-  core.XPathEvaluator = XPathEvaluator;
-
-  core.Document.prototype.createExpression =
-    XPathEvaluator.prototype.createExpression;
-
-  core.Document.prototype.createNSResolver =
-      XPathEvaluator.prototype.createNSResolver;
-
-  core.Document.prototype.evaluate = XPathEvaluator.prototype.evaluate;
-
-})();
diff --git a/node_modules/jsdom/lib/jsdom/living/character-data.js b/node_modules/jsdom/lib/jsdom/living/character-data.js
deleted file mode 100644
index 89b2eaa..0000000
--- a/node_modules/jsdom/lib/jsdom/living/character-data.js
+++ /dev/null
@@ -1,90 +0,0 @@
-"use strict";
-var inheritFrom = require("../utils").inheritFrom;
-
-module.exports = function (core) {
-  core.CharacterData = function CharacterData(ownerDocument, data) {
-    core.Node.call(this, ownerDocument);
-
-    this._data = data;
-  };
-
-  inheritFrom(core.Node, core.CharacterData, {
-    get data() { return this._data; },
-    set data(data) {
-      if (data === null) {
-        data = "";
-      }
-      data = String(data);
-
-      this._setData(data);
-    },
-
-    get length() {
-      return this._data.length;
-    },
-
-    substringData: function (offset, count) {
-      offset = offset >>> 0;
-      count = count >>> 0;
-
-      var length = this.length;
-
-      if (offset > length) {
-        throw new core.DOMException(core.DOMException.INDEX_SIZE_ERR);
-      }
-
-      if (offset + count > length) {
-        return this._data.substring(offset);
-      }
-
-      return this._data.substring(offset, offset + count);
-    },
-
-    appendData: function (data) {
-      this.replaceData(this.length, 0, data);
-    },
-
-    insertData: function (offset, data) {
-      this.replaceData(offset, 0, data);
-    },
-
-    deleteData: function (offset, count) {
-      this.replaceData(offset, count, "");
-    },
-
-    replaceData: function (offset, count, data) {
-      offset = offset >>> 0;
-      count = count >>> 0;
-      data = String(data);
-
-      var length = this.length;
-
-      if (offset > length) {
-        throw new core.DOMException(core.DOMException.INDEX_SIZE_ERR);
-      }
-
-      if (offset + count > length) {
-        count = length - offset;
-      }
-
-      var start = this._data.substring(0, offset);
-      var end = this._data.substring(offset + count);
-
-      this._setData(start + data + end);
-
-      // TODO: range stuff
-    },
-
-    _setData: function (newData) {
-      // TODO: remove this once we no longer rely on mutation events internally, since they are nonstandard
-      var oldData = this._data;
-      this._data = newData;
-
-      if (this._ownerDocument && this._parentNode && this._ownerDocument.implementation._hasFeature("MutationEvents")) {
-        var ev = this._ownerDocument.createEvent("MutationEvents");
-        ev.initMutationEvent("DOMCharacterDataModified", true, false, this, oldData, newData, null, null);
-        this.dispatchEvent(ev);
-      }
-    }
-  });
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/comment.js b/node_modules/jsdom/lib/jsdom/living/comment.js
deleted file mode 100644
index 471eb5d..0000000
--- a/node_modules/jsdom/lib/jsdom/living/comment.js
+++ /dev/null
@@ -1,13 +0,0 @@
-"use strict";
-var inheritFrom = require("../utils").inheritFrom;
-
-module.exports = function (core) {
-  // TODO: constructor should not take ownerDocument
-  core.Comment = function Comment(ownerDocument, data) {
-    core.CharacterData.call(this, ownerDocument, data);
-  };
-
-  inheritFrom(core.CharacterData, core.Comment, {
-    nodeType: core.Node.COMMENT_NODE, // TODO should be on prototype, not here
-  });
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/document-type.js b/node_modules/jsdom/lib/jsdom/living/document-type.js
deleted file mode 100644
index abd80aa..0000000
--- a/node_modules/jsdom/lib/jsdom/living/document-type.js
+++ /dev/null
@@ -1,19 +0,0 @@
-"use strict";
-var inheritFrom = require("../utils").inheritFrom;
-
-module.exports = function (core) {
-  core.DocumentType = function DocumentType(ownerDocument, name, publicId, systemId) {
-    core.Node.call(this, ownerDocument);
-
-    this._name = name;
-    this._publicId = publicId;
-    this._systemId = systemId;
-  };
-
-  inheritFrom(core.Node, core.DocumentType, {
-    nodeType: core.Node.DOCUMENT_TYPE_NODE,  // TODO should be on prototype, not here
-    get name() { return this._name; },
-    get publicId() { return this._publicId; },
-    get systemId() { return this._systemId; }
-  });
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/document.js b/node_modules/jsdom/lib/jsdom/living/document.js
deleted file mode 100644
index 9943519..0000000
--- a/node_modules/jsdom/lib/jsdom/living/document.js
+++ /dev/null
@@ -1,26 +0,0 @@
-"use strict";
-var validateNames = require("./helpers/validate-names");
-
-module.exports = function (core) {
-  core.Document.prototype.createProcessingInstruction = function (target, data) {
-    target = String(target);
-    data = String(data);
-
-    validateNames.name(target, core);
-
-    if (data.indexOf("?>") !== -1) {
-      throw new core.DOMException(core.DOMException.INVALID_CHARACTER_ERR,
-        "Processing instruction data cannot contain the string \"?>\"");
-    }
-
-    return new core.ProcessingInstruction(this._ownerDocument, target, data);
-  };
-
-  core.Document.prototype.createTextNode = function (data) {
-    return new core.Text(this, String(data));
-  };
-
-  core.Document.prototype.createComment = function (data) {
-    return new core.Comment(this, String(data));
-  };
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/dom-implementation.js b/node_modules/jsdom/lib/jsdom/living/dom-implementation.js
deleted file mode 100644
index 5ca8989..0000000
--- a/node_modules/jsdom/lib/jsdom/living/dom-implementation.js
+++ /dev/null
@@ -1,85 +0,0 @@
-"use strict";
-var validateNames = require("./helpers/validate-names");
-
-module.exports = function (core) {
-  core.DOMImplementation.prototype.hasFeature = function () {
-    return true;
-  };
-
-  core.DOMImplementation.prototype.createDocumentType = function (qualifiedName, publicId, systemId) {
-    qualifiedName = String(qualifiedName);
-    publicId = String(publicId);
-    systemId = String(systemId);
-
-    validateNames.qname(qualifiedName, core);
-
-    return new core.DocumentType(this._ownerDocument, qualifiedName, publicId, systemId);
-  };
-
-  core.DOMImplementation.prototype.createDocument = function (namespace, qualifiedName, doctype) {
-    namespace = namespace !== null ? String(namespace) : namespace;
-    qualifiedName = qualifiedName === null ? "" : String(qualifiedName);
-    if (doctype === undefined) {
-      doctype = null;
-    }
-
-    var document = new core.Document({ parsingMode: "xml" });
-
-    var element = null;
-    if (qualifiedName !== "") {
-      element = document.createElementNS(namespace, qualifiedName);
-    }
-
-    if (doctype !== null) {
-      document.appendChild(doctype);
-    }
-
-    if (element !== null) {
-      document.appendChild(element);
-    }
-
-    return document;
-  };
-
-  core.DOMImplementation.prototype.createHTMLDocument = function (title) {
-    // Let doc be a new document that is an HTML document.
-    // Set doc's content type to "text/html".
-    var document = new core.HTMLDocument({ parsingMode: "html" });
-
-    // Create a doctype, with "html" as its name and with its node document set
-    // to doc. Append the newly created node to doc.
-    var doctype = this.createDocumentType("html", "", "");
-    document.appendChild(doctype);
-
-    // Create an html element in the HTML namespace, and append it to doc.
-    var htmlElement = document.createElementNS("http://www.w3.org/1999/xhtml", "html");
-    document.appendChild(htmlElement);
-
-    // Create a head element in the HTML namespace, and append it to the html
-    // element created in the previous step.
-    var headElement = document.createElement("head");
-    htmlElement.appendChild(headElement);
-
-    // If the title argument is not omitted:
-    if (title !== undefined) {
-      // Create a title element in the HTML namespace, and append it to the head
-      // element created in the previous step.
-      var titleElement = document.createElement("title");
-      headElement.appendChild(titleElement);
-
-      // Create a Text node, set its data to title (which could be the empty
-      // string), and append it to the title element created in the previous step.
-      titleElement.appendChild(document.createTextNode(title));
-    }
-
-    // Create a body element in the HTML namespace, and append it to the html
-    // element created in the earlier step.
-    htmlElement.appendChild(document.createElement("body"));
-
-    // doc's origin is an alias to the origin of the context object's associated
-    // document, and doc's effective script origin is an alias to the effective
-    // script origin of the context object's associated document.
-
-    return document;
-  };
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/helpers/validate-names.js b/node_modules/jsdom/lib/jsdom/living/helpers/validate-names.js
deleted file mode 100644
index 5f4622f..0000000
--- a/node_modules/jsdom/lib/jsdom/living/helpers/validate-names.js
+++ /dev/null
@@ -1,63 +0,0 @@
-"use strict";
-var xnv = require("xml-name-validator");
-
-// https://dom.spec.whatwg.org/#validate
-
-exports.name = function (name, core) {
-  try {
-    xnv.name(name);
-  } catch (e) {
-    throw new core.DOMException(core.DOMException.INVALID_CHARACTER_ERR,
-      "\"" + name + "\" did not match the Name production: " + e.message);
-  }
-};
-
-exports.qname = function (qname, core) {
-  exports.name(qname, core);
-
-  try {
-    xnv.qname(qname);
-  } catch (e) {
-    throw new core.DOMException(core.DOMException.NAMESPACE_ERR,
-      "\"" + qname + "\" did not match the QName production: " + e.message);
-  }
-};
-
-exports.validateAndExtract = function (namespace, qualifiedName, core) {
-  if (namespace === "") {
-    namespace = null;
-  }
-
-  exports.qname(qualifiedName, core);
-
-  var prefix = null;
-  var localName = qualifiedName;
-
-  var colonIndex = qualifiedName.indexOf(":");
-  if (colonIndex !== -1) {
-    prefix = qualifiedName.substring(0, colonIndex);
-    localName = qualifiedName.substring(colonIndex + 1);
-  }
-
-  if (prefix !== null && namespace === null) {
-    throw new core.DOMException(core.DOMException.NAMESPACE_ERR,
-      "A namespace was given but a prefix was also extracted from the qualifiedName");
-  }
-
-  if (prefix === "xml" && namespace !== "http://www.w3.org/XML/1998/namespace") {
-    throw new core.DOMException(core.DOMException.NAMESPACE_ERR,
-      "A prefix of \"xml\" was given but the namespace was not the XML namespace");
-  }
-
-  if ((qualifiedName === "xmlns" || prefix === "xmlns") && namespace !== "http://www.w3.org/2000/xmlns/") {
-    throw new core.DOMException(core.DOMException.NAMESPACE_ERR,
-      "A prefix or qualifiedName of \"xmlns\" was given but the namespace was not the XMLNS namespace");
-  }
-
-  if (namespace === "http://www.w3.org/2000/xmlns/" && qualifiedName !== "xmlns" && prefix !== "xmlns") {
-    throw new core.DOMException(core.DOMException.NAMESPACE_ERR,
-      "The XMLNS namespace was given but neither the prefix nor qualifiedName was \"xmlns\"");
-  }
-
-  return { namespace: namespace, prefix: prefix, localName: localName, qualifiedName: qualifiedName };
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/index.js b/node_modules/jsdom/lib/jsdom/living/index.js
deleted file mode 100644
index e4b67a0..0000000
--- a/node_modules/jsdom/lib/jsdom/living/index.js
+++ /dev/null
@@ -1,23 +0,0 @@
-"use strict";
-var core = module.exports = require("../level1/core");
-
-// These (because of how they were written) directly include level1/core and modify it.
-// ORDER IS IMPORTANT
-require("../level2/core");
-require("../level2/events");
-require("../level2/html");
-require("../level2/style");
-require("../level3/core");
-require("../level3/ls");
-require("../level3/xpath");
-
-require("./document-type")(core);
-require("./character-data")(core);
-require("./processing-instruction")(core);
-require("./comment")(core);
-require("./text")(core);
-require("./dom-implementation")(core);
-require("./document")(core);
-require("./node-filter")(core);
-require("./node")(core);
-require("./selectors")(core);
diff --git a/node_modules/jsdom/lib/jsdom/living/node-filter.js b/node_modules/jsdom/lib/jsdom/living/node-filter.js
deleted file mode 100644
index f945b84..0000000
--- a/node_modules/jsdom/lib/jsdom/living/node-filter.js
+++ /dev/null
@@ -1,47 +0,0 @@
-"use strict";
-var addConstants = require("../utils").addConstants;
-
-module.exports = function (core) {
-  // https://dom.spec.whatwg.org/#interface-nodefilter
-  core.NodeFilter = function () {
-    throw new TypeError("Illegal constructor");
-  };
-
-  /**
-   * Returns an unsigned short that will be used to tell if a given Node must
-   * be accepted or not by the NodeIterator or TreeWalker iteration
-   * algorithm. This method is expected to be written by the user of a
-   * NodeFilter.
-   *
-   * @see https://developer.mozilla.org/en-US/docs/Web/API/NodeFilter
-   * @interface
-   *
-   * @param  {Node} node DOM Node
-   * @return {FILTER_ACCEPT|FILTER_REJECT|FILTER_SKIP}
-   */
-  core.NodeFilter.acceptNode = function(/* node */) {
-    throw new Error("This method is expected to be written by the user of a NodeFilter.");
-  };
-
-  addConstants(core.NodeFilter, {
-    // Constants for whatToShow
-    SHOW_ALL                    : 0xFFFFFFFF,
-    SHOW_ELEMENT                : 0x00000001,
-    SHOW_ATTRIBUTE              : 0x00000002,
-    SHOW_TEXT                   : 0x00000004,
-    SHOW_CDATA_SECTION          : 0x00000008,
-    SHOW_ENTITY_REFERENCE       : 0x00000010,
-    SHOW_ENTITY                 : 0x00000020,
-    SHOW_PROCESSING_INSTRUCTION : 0x00000040,
-    SHOW_COMMENT                : 0x00000080,
-    SHOW_DOCUMENT               : 0x00000100,
-    SHOW_DOCUMENT_TYPE          : 0x00000200,
-    SHOW_DOCUMENT_FRAGMENT      : 0x00000400,
-    SHOW_NOTATION               : 0x00000800,
-
-    // Constants returned by acceptNode
-    FILTER_ACCEPT               : 1,
-    FILTER_REJECT               : 2,
-    FILTER_SKIP                 : 3
-  });
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/node.js b/node_modules/jsdom/lib/jsdom/living/node.js
deleted file mode 100644
index 0ff38f9..0000000
--- a/node_modules/jsdom/lib/jsdom/living/node.js
+++ /dev/null
@@ -1,261 +0,0 @@
-"use strict";
-var defineGetter = require("../utils").defineGetter;
-
-module.exports = function (core) {
-  var DOCUMENT_POSITION_DISCONNECTED = core.Node.DOCUMENT_POSITION_DISCONNECTED;
-  var DOCUMENT_POSITION_PRECEDING = core.Node.DOCUMENT_POSITION_PRECEDING;
-  var DOCUMENT_POSITION_FOLLOWING = core.Node.DOCUMENT_POSITION_FOLLOWING;
-  var DOCUMENT_POSITION_CONTAINS = core.Node.DOCUMENT_POSITION_CONTAINS;
-  var DOCUMENT_POSITION_CONTAINED_BY = core.Node.DOCUMENT_POSITION_CONTAINED_BY;
-  var DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = core.Node.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC;
-
-  /**
-   * Return true if node is of a type obsoleted by the WHATWG living standard
-   * @param  {Node}  node
-   * @return {Boolean}
-   */
-  function isObsoleteNodeType(node) {
-    return node.nodeType === core.Node.ENTITY_NODE ||
-      node.nodeType === core.Node.ENTITY_REFERENCE_NODE ||
-      node.nodeType === core.Node.NOTATION_NODE ||
-      node.nodeType === core.Node.CDATA_SECTION_NODE;
-  }
-
-  /**
-   * Return the parent node of node, whatever its nodeType is
-   * @param  {Node} node
-   * @return {Node or null}
-   */
-  function getNodeParent(node) {
-
-    if(!node) {
-      return node;
-    }
-
-    switch (node.nodeType) {
-
-      case core.Node.DOCUMENT_NODE:
-      case core.Node.DOCUMENT_FRAGMENT_NODE:
-        return null;
-
-      case core.Node.COMMENT_NODE:
-      case core.Node.DOCUMENT_TYPE_NODE:
-      case core.Node.ELEMENT_NODE:
-      case core.Node.PROCESSING_INSTRUCTION_NODE:
-      case core.Node.TEXT_NODE:
-        return node.parentNode;
-
-      case core.Node.ATTRIBUTE_NODE:
-
-        return node._parentNode;
-
-      default:
-        throw new Error("Unknown node type:" + node.nodeType);
-    }
-  }
-
-  /**
-   * Walk up the node tree and return the nodes root node
-   * @param  {Node} node
-   * @return {Node}
-   */
-  function findNodeRoot(node) {
-    if (!getNodeParent(node)) {
-      return node;
-    }
-
-    return findNodeRoot(getNodeParent(node));
-  }
-
-  /**
-   * Walk up the node tree returning true if otherNode is an ancestor of node
-   * @param  {Node}  node
-   * @param  {Node}  otherNode
-   * @return {Boolean}
-   */
-  function isAncestor(node, otherNode) {
-    var parentNode = node.nodeType === node.ATTRIBUTE_NODE ? node._parentNode : node.parentNode;
-
-    if (!parentNode) {
-      return false;
-    }
-
-    if(parentNode === otherNode) {
-      return true;
-    }
-
-    return isAncestor(parentNode, otherNode);
-  }
-
-  /**
-   * Traverse the node tree starting at current. Return DOCUMENT_POSITION_FOLLOWING if otherNode follows node. Return
-   * DOCUMENT_POSITION_PRECEDING if otherNode precedes node
-   * @param  {Node} current
-   * @param  {Node} node
-   * @param  {Node} otherNode
-   * @return {Number}
-   */
-  function followingOrPreceding(current, node, otherNode) {
-    if (current === node) {
-      return core.Node.DOCUMENT_POSITION_FOLLOWING;
-    }
-
-    if (current === otherNode) {
-      return core.Node.DOCUMENT_POSITION_PRECEDING;
-    }
-
-    var i = 0, len = current._childNodes.length, child, result;
-
-    for(; i < len; i += 1) {
-
-      child = current._childNodes[i];
-
-      if((result = followingOrPreceding(child, node, otherNode)) !== 0) {
-        return result;
-      }
-    }
-
-    return 0;
-  }
-
-  /**
-   * Returns a bitmask Number composed of DOCUMENT_POSITION constants based upon the rules defined in
-   * http://dom.spec.whatwg.org/#dom-node-comparedocumentposition
-   * @param  {Node} other
-   * @return {Number}
-   */
-  core.Node.prototype.compareDocumentPosition = function compareDocumentPosition (other) {
-    // Let reference be the context object.
-    var reference = this;
-
-    if(!(other instanceof core.Node)) {
-      throw Error("Comparing position against non-Node values is not allowed");
-    }
-
-    if (isObsoleteNodeType(reference) || isObsoleteNodeType(other)) {
-      throw new Error("Obsolete node type");
-    }
-
-    // If other and reference are the same object, return zero.
-    if (reference === other) {
-      return 0;
-    }
-
-    // If other and reference are not in the same tree, return the result of adding DOCUMENT_POSITION_DISCONNECTED,
-    // DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, and either DOCUMENT_POSITION_PRECEDING or DOCUMENT_POSITION_FOLLOWING,
-    // with the constraint that this is to be consistent, together.
-    if (findNodeRoot(reference) !== findNodeRoot(other)) {
-      return DOCUMENT_POSITION_DISCONNECTED + DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC + DOCUMENT_POSITION_FOLLOWING;
-    }
-
-    // If other is an ancestor of reference, return the result of adding DOCUMENT_POSITION_CONTAINS to
-    // DOCUMENT_POSITION_PRECEDING.
-    if (isAncestor(reference, other)) {
-      return DOCUMENT_POSITION_CONTAINS + DOCUMENT_POSITION_PRECEDING;
-    }
-
-    // If other is a descendant of reference, return the result of adding DOCUMENT_POSITION_CONTAINED_BY to
-    // DOCUMENT_POSITION_FOLLOWING.
-    if (isAncestor(other, reference)) {
-      return DOCUMENT_POSITION_CONTAINED_BY + DOCUMENT_POSITION_FOLLOWING;
-    }
-
-    // If other is preceding reference return DOCUMENT_POSITION_PRECEDING, otherwise return DOCUMENT_POSITION_FOLLOWING
-    return followingOrPreceding(findNodeRoot(reference), reference, other);
-  };
-
-  /**
-   * The contains(other) method returns true if other is an inclusive descendant of the context object,
-   * and false otherwise (including when other is null).
-   * @param  {[Node]} other [the node to test]
-   * @return {[boolean]}      [whether other is an inclusive descendant of this]
-   */
-  core.Node.prototype.contains = function (other) {
-    return other instanceof core.Node &&
-    (this === other || this.compareDocumentPosition(other) & DOCUMENT_POSITION_CONTAINED_BY);
-  };
-
-  // http://dom.spec.whatwg.org/#dom-node-parentelement
-  defineGetter(core.Node.prototype, "parentElement", function () {
-    return this._parentNode !== null && this._parentNode.nodeType === core.Node.ELEMENT_NODE ? this._parentNode : null;
-  });
-
-  function nodeEquals(a, b) {
-    if (a.nodeType !== b.nodeType) {
-      return false;
-    }
-
-    switch (a.nodeType) {
-      case core.Node.DOCUMENT_TYPE_NODE:
-        if (a._name !== b._name || a._publicId !== b._publicId || a._systemId !== b._systemId) {
-          return false;
-        }
-        break;
-      case core.Node.ELEMENT_NODE:
-        if (a._namespaceURI !== b._namespaceURI || a._prefix !== b._prefix || a._localName !== b._localName ||
-            a._attributes.length !== b._attributes.length) {
-          return false;
-        }
-        break;
-      case core.Node.PROCESSING_INSTRUCTION_NODE:
-        if (a._target !== b._target || a._data !== b._data) {
-          return false;
-        }
-        break;
-      case core.Node.TEXT_NODE:
-      case core.Node.COMMENT_NODE:
-        if (a._data !== b._data) {
-          return false;
-        }
-        break;
-    }
-
-    if (a.nodeType === core.Node.ELEMENT_NODE) {
-      for (var i = 0; i < a._attributes.length; ++i) {
-        var aAttr = a._attributes[i];
-        var bAttr = b._attributes.$getNode(aAttr._namespaceURI, aAttr._localName);
-        if (!bAttr) {
-          return false;
-        }
-
-        // TODO: once Attr is simplified, check the internal property instead of the public getter
-        if (aAttr.value !== bAttr.value) {
-          return false;
-        }
-      }
-    }
-
-    if (a._childNodes.length !== b._childNodes.length) {
-      return false;
-    }
-
-    for (var j = 0; j < a._childNodes.length; ++j) {
-      if (!nodeEquals(a._childNodes[j], b._childNodes[j])) {
-        return false;
-      }
-    }
-
-    return true;
-  }
-
-  // https://dom.spec.whatwg.org/#dom-node-isequalnode
-  core.Node.prototype.isEqualNode = function (node) {
-    if (node === undefined) {
-      // this is what Node? means in the IDL
-      node = null;
-    }
-
-    if (node === null) {
-      return false;
-    }
-
-    // Fast-path, not in the spec
-    if (this === node) {
-      return true;
-    }
-
-    return nodeEquals(this, node);
-  };
-};
-
-
diff --git a/node_modules/jsdom/lib/jsdom/living/processing-instruction.js b/node_modules/jsdom/lib/jsdom/living/processing-instruction.js
deleted file mode 100644
index ce9c4b7..0000000
--- a/node_modules/jsdom/lib/jsdom/living/processing-instruction.js
+++ /dev/null
@@ -1,15 +0,0 @@
-"use strict";
-var inheritFrom = require("../utils").inheritFrom;
-
-module.exports = function (core) {
-  core.ProcessingInstruction = function ProcessingInstruction(ownerDocument, target, data) {
-    core.CharacterData.call(this, ownerDocument, data);
-
-    this._target = target;
-  };
-
-  inheritFrom(core.CharacterData, core.ProcessingInstruction, {
-    nodeType: core.Node.PROCESSING_INSTRUCTION_NODE, // TODO should be on prototype, not here
-    get target() { return this._target; }
-  });
-};
diff --git a/node_modules/jsdom/lib/jsdom/living/selectors.js b/node_modules/jsdom/lib/jsdom/living/selectors.js
deleted file mode 100644
index d159f5a..0000000
--- a/node_modules/jsdom/lib/jsdom/living/selectors.js
+++ /dev/null
@@ -1,32 +0,0 @@
-"use strict";
-var nwmatcher = require("nwmatcher/src/nwmatcher-noqsa");
-var memoizeQuery = require("../utils").memoizeQuery;
-
-module.exports = function (core) {
-  [core.Document, core.DocumentFragment, core.Element].forEach(function (Class) {
-    Class.prototype.querySelector = memoizeQuery(function (selectors) {
-      return addNwmatcher(this).first(String(selectors), this);
-    });
-
-    Class.prototype.querySelectorAll = memoizeQuery(function (selectors) {
-      return new core.NodeList(addNwmatcher(this).select(String(selectors), this));
-    });
-  });
-
-  core.Element.prototype.matches = memoizeQuery(function (selectors) {
-    return addNwmatcher(this).match(this, selectors);
-  });
-};
-
-// nwmatcher gets `document.documentElement` at creation-time, so we have to initialize lazily, since in the initial
-// stages of Document initialization, there is no documentElement present yet.
-function addNwmatcher(parentNode) {
-  var document = parentNode._ownerDocument;
-
-  if (!document._nwmatcher) {
-    document._nwmatcher = nwmatcher({ document: document });
-    document._nwmatcher.configure({ UNIQUE_ID: false });
-  }
-
-  return document._nwmatcher;
-}
diff --git a/node_modules/jsdom/lib/jsdom/living/text.js b/node_modules/jsdom/lib/jsdom/living/text.js
deleted file mode 100644
index ecd8c63..0000000
--- a/node_modules/jsdom/lib/jsdom/living/text.js
+++ /dev/null
@@ -1,41 +0,0 @@
-"use strict";
-var inheritFrom = require("../utils").inheritFrom;
-
-module.exports = function (core) {
-  // TODO: constructor should not take ownerDocument
-  core.Text = function Text(ownerDocument, data) {
-    core.CharacterData.call(this, ownerDocument, data);
-  };
-
-  inheritFrom(core.CharacterData, core.Text, {
-    nodeType: core.Node.TEXT_NODE, // TODO should be on prototype, not here
-    splitText: function (offset) {
-      offset = offset >>> 0;
-
-      var length = this.length;
-
-      if (offset > length) {
-        throw new core.DOMException(core.DOMException.INDEX_SIZE_ERR);
-      }
-
-      var count = length - offset;
-      var newData = this.substringData(offset, count);
-
-      var newNode = this._ownerDocument.createTextNode(newData);
-
-      var parent = this._parentNode;
-
-      if (parent !== null) {
-        parent.insertBefore(newNode, this.nextSibling);
-      }
-
-      this.replaceData(offset, count, "");
-
-      return newNode;
-
-      // TODO: range stuff
-    },
-
-    // TODO: wholeText property
-  });
-};
diff --git a/node_modules/jsdom/lib/jsdom/utils.js b/node_modules/jsdom/lib/jsdom/utils.js
deleted file mode 100644
index 1894611..0000000
--- a/node_modules/jsdom/lib/jsdom/utils.js
+++ /dev/null
@@ -1,223 +0,0 @@
-"use strict";
-var path = require("path");
-var url = require("url");
-
-exports.toFileUrl = function (fileName) {
-  // Beyond just the `path.resolve`, this is mostly for the benefit of Windows,
-  // where we need to convert "\" to "/" and add an extra "/" prefix before the
-  // drive letter.
-  var pathname = path.resolve(process.cwd(), fileName).replace(/\\/g, "/");
-  if (pathname[0] !== "/") {
-    pathname = "/" + pathname;
-  }
-
-  return "file://" + pathname;
-};
-
-/**
- * Define a setter on an object
- *
- * This method replaces any existing setter but leaves getters in place.
- *
- * - `object` {Object} the object to define the setter on
- * - `property` {String} the name of the setter
- * - `setterFn` {Function} the setter
- */
-exports.defineSetter = function defineSetter(object, property, setterFn) {
-  var descriptor = Object.getOwnPropertyDescriptor(object, property) || {
-    configurable: true,
-    enumerable: true
-  };
-
-  descriptor.set = setterFn;
-
-  Object.defineProperty(object, property, descriptor);
-};
-
-/**
- * Define a getter on an object
- *
- * This method replaces any existing getter but leaves setters in place.
- *
- * - `object` {Object} the object to define the getter on
- * - `property` {String} the name of the getter
- * - `getterFn` {Function} the getter
- */
-exports.defineGetter = function defineGetter(object, property, getterFn) {
-  var descriptor = Object.getOwnPropertyDescriptor(object, property) || {
-    configurable: true,
-    enumerable: true
-  };
-
-  descriptor.get = getterFn;
-
-  Object.defineProperty(object, property, descriptor);
-};
-
-/**
- * Create an object with the given prototype
- *
- * Optionally augment the created object.
- *
- * - `prototype` {Object} the created object's prototype
- * - `[properties]` {Object} properties to attach to the created object
- */
-exports.createFrom = function createFrom(prototype, properties) {
-  properties = properties || {};
-
-  var descriptors = {};
-  Object.getOwnPropertyNames(properties).forEach(function (name) {
-    descriptors[name] = Object.getOwnPropertyDescriptor(properties, name);
-  });
-
-  return Object.create(prototype, descriptors);
-};
-
-/**
- * Create an inheritance relationship between two classes
- *
- * Optionally augment the inherited prototype.
- *
- * - `Superclass` {Function} the inherited class
- * - `Subclass` {Function} the inheriting class
- * - `[properties]` {Object} properties to attach to the inherited prototype
- */
-exports.inheritFrom = function inheritFrom(Superclass, Subclass, properties) {
-  properties = properties || {};
-
-  Object.defineProperty(properties, "constructor", {
-    value: Subclass,
-    writable: true,
-    configurable: true
-  });
-
-  Subclass.prototype = exports.createFrom(Superclass.prototype, properties);
-};
-
-/**
- * Define a list of constants on a constructor and its .prototype
- *
- * - `Constructor` {Function} the constructor to define the constants on
- * - `propertyMap` {Object}  key/value map of properties to define
- */
-exports.addConstants = function addConstants(Constructor, propertyMap) {
-  for (var property in propertyMap) {
-    var value = propertyMap[property];
-    addConstant(Constructor, property, value);
-    addConstant(Constructor.prototype, property, value);
-  }
-};
-
-function addConstant(object, property, value) {
-  Object.defineProperty(object, property, {
-    configurable: false,
-    enumerable: true,
-    value: value,
-    writable: false
-  });
-}
-
-var memoizeQueryTypeCounter = 0;
-
-/**
- * Returns a version of a method that memoizes specific types of calls on the object
- *
- * - `fn` {Function} the method to be memozied
- */
-exports.memoizeQuery = function memoizeQuery(fn) {
-  // Only memoize query functions with arity <= 2
-  if (fn.length > 2) {
-    return fn;
-  }
-
-  var type = memoizeQueryTypeCounter++;
-
-  return function () {
-    if (!this._memoizedQueries) {
-      return fn.apply(this, arguments);
-    }
-
-    if (!this._memoizedQueries[type]) {
-      this._memoizedQueries[type] = Object.create(null);
-    }
-
-    var key;
-    if (arguments.length === 1 && typeof arguments[0] === "string") {
-      key = arguments[0];
-    } else if (arguments.length === 2 && typeof arguments[0] === "string" && typeof arguments[1] === "string") {
-      key = arguments[0] + "::" + arguments[1];
-    } else {
-      return fn.apply(this, arguments);
-    }
-
-    if (!(key in this._memoizedQueries[type])) {
-      this._memoizedQueries[type][key] = fn.apply(this, arguments);
-    }
-    return this._memoizedQueries[type][key];
-  };
-};
-
-/**
-* A slightly-more-compliant version of `url.resolve`, taking care of a few Node bugs.
-*/
-exports.resolveHref = function resolveHref(baseUrl, href) {
-  var about = "about:blank";
-
-  // if we're redirecting to another site on about:blank, just let it through
-  if (href.substring(0, about.length) === about) {
-    return href;
-  }
-
-  // if we have to resolve from about:blank we need a bit of special logic
-  if (baseUrl.substring(0, about.length) === about) {
-    if (href.search(/^([A-Za-z0-9]+):/) === 0) { // we have an absolute url
-      baseUrl = href;
-      href = "";
-    } else if (href[0] === "#") { // we have a location hash on about:blank
-      return baseUrl.split(/#/)[0] + href;
-    } else if (!href) { // we just have some base url
-      return baseUrl;
-    } else { // must be a file url
-      baseUrl = "file://" + href;
-      href = "";
-    }
-  }
-
-  if (baseUrl === resolveHref.memoizedUrl && resolveHref.cache && resolveHref.cache[href]) {
-    return resolveHref.cache[href];
-  }
-
-  // When switching protocols, the path doesn't get canonicalized (i.e. .s and ..s are still left):
-  // https://github.com/joyent/node/issues/5453
-  var intermediate = url.resolve(baseUrl, href);
-
-  // This canonicalizes the path, at the cost of overwriting the hash.
-  var nextStep = url.resolve(intermediate, "#");
-
-  // But it breaks file URLs by removing their colon O_o, so put that back.
-  nextStep = nextStep.replace(/^file:\/\/([a-z])\//i, "file:///$1:/");
-
-  // So, insert the hash back in, if there was one.
-  var parsed = url.parse(intermediate);
-  var fixed = nextStep.slice(0, -1) + (parsed.hash || "");
-
-  // Finally, fix file:/// URLs on Windows, where Node removes their drive letters:
-  // https://github.com/joyent/node/issues/5452
-  if (/^file\:\/\/\/[a-z]\:\//i.test(baseUrl) && /^file\:\/\/\//.test(fixed) &&
-      !/^file\:\/\/\/[a-z]\:\//i.test(fixed)) {
-    fixed = fixed.replace(/^file\:\/\/\//, baseUrl.substring(0, 11));
-  }
-
-  // HORRIBLE HACK: encode \u00E4 correctly just so that we pass
-  // https://github.com/w3c/web-platform-tests/blob/e75f01a689a3481f5c773315c2c2527712cf8c2c/dom/nodes/DOMImplementation-createHTMLDocument.html#L71-L72
-  // Eventually we should replace this with a real URL parser based on the URL standard.
-  fixed = fixed.replace(/\u00E4/, "%C3%A4");
-
-  if (baseUrl !== resolveHref.memoizedUrl) {
-    resolveHref.memoizedUrl = baseUrl;
-    resolveHref.cache = {};
-  }
-  resolveHref.cache[href] = fixed;
-
-  return fixed;
-};
diff --git a/node_modules/jsdom/lib/jsdom/virtual-console.js b/node_modules/jsdom/lib/jsdom/virtual-console.js
deleted file mode 100644
index 1cc7723..0000000
--- a/node_modules/jsdom/lib/jsdom/virtual-console.js
+++ /dev/null
@@ -1,24 +0,0 @@
-"use strict";
-
-var EventEmitter = require("events").EventEmitter;
-var utils = require("./utils");
-
-function VirtualConsole() {
-  // If "error" event has no listeners,
-  // EventEmitter throws an exception
-  this.on("error", function () {});
-}
-
-utils.inheritFrom(EventEmitter, VirtualConsole, {
-  sendTo: function (anyConsole) {
-    Object.keys(anyConsole).forEach(function (method) {
-      if (typeof anyConsole[method] === "function") {
-        this.on(method, function () {
-          anyConsole[method].apply(anyConsole, arguments);
-        });
-      }
-    }, this);
-  }
-});
-
-module.exports = VirtualConsole;