.

node_modules/@mixmark-io/domino/CSSStyleDeclaration.js

@@ -0,0 +1,234 @@
+"use strict";
+
+const { parse } = require('./style_parser');
+
+module.exports = function (elt) {
+  const style = new CSSStyleDeclaration(elt)
+  const handler = {
+    get: function(target, property) {
+      return property in target ? target[property] : target.getPropertyValue(dasherizeProperty(property));
+    },
+    has: function(target, key) {
+      return true;
+    },
+    set: function(target, property, value) {
+      if (property in target) {
+        target[property] = value;
+      } else {
+        target.setProperty(dasherizeProperty(property), value ?? undefined);
+      }
+
+      return true;
+    }
+  };
+
+  return new Proxy(style, handler);
+};
+
+function dasherizeProperty(property) {
+  return property.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
+}
+
+
+function CSSStyleDeclaration(elt) {
+  this._element = elt;
+}
+
+const IMPORTANT_BANG = '!important';
+
+// Utility function for parsing style declarations
+// Pass in a string like "margin-left: 5px; border-style: solid"
+// and this function returns an object like
+// {"margin-left":"5px", "border-style":"solid"}
+function parseStyles(value) {
+  const result = {
+    property: {},
+    priority: {},
+  }
+
+  if (!value) {
+    return result;
+  }
+
+  const styleValues = parse(value);
+  if (styleValues.length < 2) {
+    return result;
+  }
+
+  for (let i = 0; i < styleValues.length; i += 2) {
+    const name = styleValues[i];
+    let value = styleValues[i+1];
+
+    if (value.endsWith(IMPORTANT_BANG)) {
+      result.priority[name] = 'important';
+      value = value.slice(0, -IMPORTANT_BANG.length).trim();
+    }
+
+    result.property[name] = value;
+  }
+
+  return result;
+}
+
+var NO_CHANGE = {}; // Private marker object
+
+CSSStyleDeclaration.prototype = Object.create(Object.prototype, {
+
+  // Return the parsed form of the element's style attribute.
+  // If the element's style attribute has never been parsed
+  // or if it has changed since the last parse, then reparse it
+  // Note that the styles don't get parsed until they're actually needed
+  _parsed: { get: function() {
+    if (!this._parsedStyles || this.cssText !== this._lastParsedText) {
+      var text = this.cssText;
+      this._parsedStyles = parseStyles(text);
+      this._lastParsedText = text;
+      delete this._names;
+    }
+    return this._parsedStyles;
+  }},
+
+  // Call this method any time the parsed representation of the
+  // style changes.  It converts the style properties to a string and
+  // sets cssText and the element's style attribute
+  _serialize: { value: function() {
+    var styles = this._parsed;
+    var s = "";
+
+    for(var name in styles.property) {
+      if (s) s += " ";
+      s += name + ": " + styles.property[name];
+      if (styles.priority[name]) {
+        s += " !" + styles.priority[name];
+      }
+      s += ";";
+    }
+
+    this.cssText = s;      // also sets the style attribute
+    this._lastParsedText = s;  // so we don't reparse
+    delete this._names;
+  }},
+
+  cssText: {
+    get: function() {
+      // XXX: this is a CSSStyleDeclaration for an element.
+      // A different impl might be necessary for a set of styles
+      // associated returned by getComputedStyle(), e.g.
+      return this._element.getAttribute("style");
+    },
+    set: function(value) {
+      // XXX: I should parse and serialize the value to
+      // normalize it and remove errors. FF and chrome do that.
+      this._element.setAttribute("style", value);
+    }
+  },
+
+  length: { get: function() {
+    if (!this._names)
+      this._names = Object.getOwnPropertyNames(this._parsed.property);
+    return this._names.length;
+  }},
+
+  item: { value: function(n) {
+    if (!this._names)
+      this._names = Object.getOwnPropertyNames(this._parsed.property);
+    return this._names[n];
+  }},
+
+  getPropertyValue: { value: function(property) {
+    property = property.toLowerCase();
+    return this._parsed.property[property] || "";
+  }},
+
+  getPropertyPriority: { value: function(property) {
+    property = property.toLowerCase();
+    return this._parsed.priority[property] || "";
+  }},
+
+  setProperty: { value: function(property, value, priority) {
+    property = property.toLowerCase();
+    if (value === null || value === undefined) {
+      value = "";
+    }
+    if (priority === null || priority === undefined) {
+      priority = "";
+    }
+
+    // String coercion
+    if (value !== NO_CHANGE) {
+      value = "" + value;
+    }
+
+    value = value.trim();
+    if (value === "") {
+      this.removeProperty(property);
+      return;
+    }
+
+    if (priority !== "" && priority !== NO_CHANGE &&
+        !/^important$/i.test(priority)) {
+      return;
+    }
+
+    var styles = this._parsed;
+    if (value === NO_CHANGE) {
+      if (!styles.property[property]) {
+        return; // Not a valid property name.
+      }
+      if (priority !== "") {
+        styles.priority[property] = "important";
+      } else {
+        delete styles.priority[property];
+      }
+    } else {
+      // We don't just accept the property value.  Instead
+      // we parse it to ensure that it is something valid.
+      // If it contains a semicolon it is invalid
+      if (value.indexOf(";") !== -1) return;
+
+      var newprops = parseStyles(property + ":" + value);
+      if (Object.getOwnPropertyNames(newprops.property).length === 0) {
+        return; // no valid property found
+      }
+      if (Object.getOwnPropertyNames(newprops.priority).length !== 0) {
+        return; // if the value included '!important' it wasn't valid.
+      }
+
+      // XXX handle shorthand properties
+
+      for (var p in newprops.property) {
+        styles.property[p] = newprops.property[p];
+        if (priority === NO_CHANGE) {
+          continue;
+        } else if (priority !== "") {
+          styles.priority[p] = "important";
+        } else if (styles.priority[p]) {
+          delete styles.priority[p];
+        }
+      }
+    }
+
+    // Serialize and update cssText and element.style!
+    this._serialize();
+  }},
+
+  setPropertyValue: { value: function(property, value) {
+    return this.setProperty(property, value, NO_CHANGE);
+  }},
+
+  setPropertyPriority: { value: function(property, priority) {
+    return this.setProperty(property, NO_CHANGE, priority);
+  }},
+
+  removeProperty: { value: function(property) {
+    property = property.toLowerCase();
+    var styles = this._parsed;
+    if (property in styles.property) {
+      delete styles.property[property];
+      delete styles.priority[property];
+
+      // Serialize and update cssText and element.style!
+      this._serialize();
+    }
+  }},
+});

node_modules/@mixmark-io/domino/CharacterData.js

@@ -0,0 +1,120 @@
+/* jshint bitwise: false */
+"use strict";
+module.exports = CharacterData;
+
+var Leaf = require('./Leaf');
+var utils = require('./utils');
+var ChildNode = require('./ChildNode');
+var NonDocumentTypeChildNode = require('./NonDocumentTypeChildNode');
+
+function CharacterData() {
+  Leaf.call(this);
+}
+
+CharacterData.prototype = Object.create(Leaf.prototype, {
+  // DOMString substringData(unsigned long offset,
+  //               unsigned long count);
+  // The substringData(offset, count) method must run these steps:
+  //
+  //     If offset is greater than the context object's
+  //     length, throw an INDEX_SIZE_ERR exception and
+  //     terminate these steps.
+  //
+  //     If offset+count is greater than the context
+  //     object's length, return a DOMString whose value is
+  //     the UTF-16 code units from the offsetth UTF-16 code
+  //     unit to the end of data.
+  //
+  //     Return a DOMString whose value is the UTF-16 code
+  //     units from the offsetth UTF-16 code unit to the
+  //     offset+countth UTF-16 code unit in data.
+  substringData: { value: function substringData(offset, count) {
+    if (arguments.length < 2) { throw new TypeError("Not enough arguments"); }
+    // Convert arguments to WebIDL "unsigned long"
+    offset = offset >>> 0;
+    count = count >>> 0;
+    if (offset > this.data.length || offset < 0 || count < 0) {
+      utils.IndexSizeError();
+    }
+    return this.data.substring(offset, offset+count);
+  }},
+
+  // void appendData(DOMString data);
+  // The appendData(data) method must append data to the context
+  // object's data.
+  appendData: { value: function appendData(data) {
+    if (arguments.length < 1) { throw new TypeError("Not enough arguments"); }
+    this.data += String(data);
+  }},
+
+  // void insertData(unsigned long offset, DOMString data);
+  // The insertData(offset, data) method must run these steps:
+  //
+  //     If offset is greater than the context object's
+  //     length, throw an INDEX_SIZE_ERR exception and
+  //     terminate these steps.
+  //
+  //     Insert data into the context object's data after
+  //     offset UTF-16 code units.
+  //
+  insertData: { value: function insertData(offset, data) {
+    return this.replaceData(offset, 0, data);
+  }},
+
+
+  // void deleteData(unsigned long offset, unsigned long count);
+  // The deleteData(offset, count) method must run these steps:
+  //
+  //     If offset is greater than the context object's
+  //     length, throw an INDEX_SIZE_ERR exception and
+  //     terminate these steps.
+  //
+  //     If offset+count is greater than the context
+  //     object's length var count be length-offset.
+  //
+  //     Starting from offset UTF-16 code units remove count
+  //     UTF-16 code units from the context object's data.
+  deleteData: { value: function deleteData(offset, count) {
+    return this.replaceData(offset, count, '');
+  }},
+
+
+  // void replaceData(unsigned long offset, unsigned long count,
+  //          DOMString data);
+  //
+  // The replaceData(offset, count, data) method must act as
+  // if the deleteData() method is invoked with offset and
+  // count as arguments followed by the insertData() method
+  // with offset and data as arguments and re-throw any
+  // exceptions these methods might have thrown.
+  replaceData: { value: function replaceData(offset, count, data) {
+    var curtext = this.data, len = curtext.length;
+    // Convert arguments to correct WebIDL type
+    offset = offset >>> 0;
+    count = count >>> 0;
+    data = String(data);
+
+    if (offset > len || offset < 0) utils.IndexSizeError();
+
+    if (offset+count > len)
+      count = len - offset;
+
+    var prefix = curtext.substring(0, offset),
+    suffix = curtext.substring(offset+count);
+
+    this.data = prefix + data + suffix;
+  }},
+
+  // Utility method that Node.isEqualNode() calls to test Text and
+  // Comment nodes for equality.  It is okay to put it here, since
+  // Node will have already verified that nodeType is equal
+  isEqual: { value: function isEqual(n) {
+    return this._data === n._data;
+  }},
+
+  length: { get: function() { return this.data.length; }}
+
+});
+
+Object.defineProperties(CharacterData.prototype, ChildNode);
+Object.defineProperties(CharacterData.prototype, NonDocumentTypeChildNode);

node_modules/@mixmark-io/domino/ChildNode.js

@@ -0,0 +1,119 @@
+"use strict";
+
+var Node = require('./Node');
+var LinkedList = require('./LinkedList');
+
+var createDocumentFragmentFromArguments = function(document, args) {
+  var docFrag = document.createDocumentFragment();
+
+  for (var i=0; i<args.length; i++) {
+    var argItem = args[i];
+    var isNode = argItem instanceof Node;
+    docFrag.appendChild(isNode ? argItem :
+                        document.createTextNode(String(argItem)));
+  }
+
+  return docFrag;
+};
+
+// The ChildNode interface contains methods that are particular to `Node`
+// objects that can have a parent.  It is implemented by `Element`,
+// `DocumentType`, and `CharacterData` objects.
+var ChildNode = {
+
+  // Inserts a set of Node or String objects in the children list of this
+  // ChildNode's parent, just after this ChildNode.  String objects are
+  // inserted as the equivalent Text nodes.
+  after: { value: function after() {
+    var argArr = Array.prototype.slice.call(arguments);
+    var parentNode = this.parentNode, nextSibling = this.nextSibling;
+    if (parentNode === null) { return; }
+    // Find "viable next sibling"; that is, next one not in argArr
+    while (nextSibling && argArr.some(function(v) { return v===nextSibling; }))
+      nextSibling = nextSibling.nextSibling;
+    // ok, parent and sibling are saved away since this node could itself
+    // appear in argArr and we're about to move argArr to a document fragment.
+    var docFrag = createDocumentFragmentFromArguments(this.doc, argArr);
+
+    parentNode.insertBefore(docFrag, nextSibling);
+  }},
+
+  // Inserts a set of Node or String objects in the children list of this
+  // ChildNode's parent, just before this ChildNode.  String objects are
+  // inserted as the equivalent Text nodes.
+  before: { value: function before() {
+    var argArr = Array.prototype.slice.call(arguments);
+    var parentNode = this.parentNode, prevSibling = this.previousSibling;
+    if (parentNode === null) { return; }
+    // Find "viable prev sibling"; that is, prev one not in argArr
+    while (prevSibling && argArr.some(function(v) { return v===prevSibling; }))
+      prevSibling = prevSibling.previousSibling;
+    // ok, parent and sibling are saved away since this node could itself
+    // appear in argArr and we're about to move argArr to a document fragment.
+    var docFrag = createDocumentFragmentFromArguments(this.doc, argArr);
+
+    var nextSibling =
+        prevSibling ? prevSibling.nextSibling : parentNode.firstChild;
+    parentNode.insertBefore(docFrag, nextSibling);
+  }},
+
+  // Remove this node from its parent
+  remove: { value: function remove() {
+    if (this.parentNode === null) return;
+
+    // Send mutation events if necessary
+    if (this.doc) {
+      this.doc._preremoveNodeIterators(this);
+      if (this.rooted) {
+        this.doc.mutateRemove(this);
+      }
+    }
+
+    // Remove this node from its parents array of children
+    // and update the structure id for all ancestors
+    this._remove();
+
+    // Forget this node's parent
+    this.parentNode = null;
+  }},
+
+  // Remove this node w/o uprooting or sending mutation events
+  // (But do update the structure id for all ancestors)
+  _remove: { value: function _remove() {
+    var parent = this.parentNode;
+    if (parent === null) return;
+    if (parent._childNodes) {
+      parent._childNodes.splice(this.index, 1);
+    } else if (parent._firstChild === this) {
+      if (this._nextSibling === this) {
+        parent._firstChild = null;
+      } else {
+        parent._firstChild = this._nextSibling;
+      }
+    }
+    LinkedList.remove(this);
+    parent.modify();
+  }},
+
+  // Replace this node with the nodes or strings provided as arguments.
+  replaceWith: { value: function replaceWith() {
+    var argArr = Array.prototype.slice.call(arguments);
+    var parentNode = this.parentNode, nextSibling = this.nextSibling;
+    if (parentNode === null) { return; }
+    // Find "viable next sibling"; that is, next one not in argArr
+    while (nextSibling && argArr.some(function(v) { return v===nextSibling; }))
+      nextSibling = nextSibling.nextSibling;
+    // ok, parent and sibling are saved away since this node could itself
+    // appear in argArr and we're about to move argArr to a document fragment.
+    var docFrag = createDocumentFragmentFromArguments(this.doc, argArr);
+    if (this.parentNode === parentNode) {
+      parentNode.replaceChild(docFrag, this);
+    } else {
+      // `this` was inserted into docFrag
+      parentNode.insertBefore(docFrag, nextSibling);
+    }
+  }},
+
+};
+
+module.exports = ChildNode;

node_modules/@mixmark-io/domino/Comment.js

@@ -0,0 +1,40 @@
+"use strict";
+module.exports = Comment;
+
+var Node = require('./Node');
+var CharacterData = require('./CharacterData');
+
+function Comment(doc, data) {
+  CharacterData.call(this);
+  this.nodeType = Node.COMMENT_NODE;
+  this.ownerDocument = doc;
+  this._data = data;
+}
+
+var nodeValue = {
+  get: function() { return this._data; },
+  set: function(v) {
+    if (v === null || v === undefined) { v = ''; } else { v = String(v); }
+    this._data = v;
+    if (this.rooted)
+      this.ownerDocument.mutateValue(this);
+  }
+};
+
+Comment.prototype = Object.create(CharacterData.prototype, {
+  nodeName: { value: '#comment' },
+  nodeValue: nodeValue,
+  textContent: nodeValue,
+  innerText: nodeValue,
+  data: {
+    get: nodeValue.get,
+    set: function(v) {
+      nodeValue.set.call(this, v===null ? '' : String(v));
+    },
+  },
+
+  // Utility methods
+  clone: { value: function clone() {
+    return new Comment(this.ownerDocument, this._data);
+  }},
+});

node_modules/@mixmark-io/domino/ContainerNode.js

@@ -0,0 +1,80 @@
+"use strict";
+module.exports = ContainerNode;
+
+var Node = require('./Node');
+var NodeList = require('./NodeList');
+
+// This class defines common functionality for node subtypes that
+// can have children
+
+function ContainerNode() {
+  Node.call(this);
+  this._firstChild = this._childNodes = null;
+}
+
+// Primary representation is a circular linked list of siblings
+ContainerNode.prototype = Object.create(Node.prototype, {
+
+  hasChildNodes: { value: function() {
+    if (this._childNodes) {
+      return this._childNodes.length > 0;
+    }
+    return this._firstChild !== null;
+  }},
+
+  childNodes: { get: function() {
+    this._ensureChildNodes();
+    return this._childNodes;
+  }},
+
+  firstChild: { get: function() {
+    if (this._childNodes) {
+      return this._childNodes.length === 0 ? null : this._childNodes[0];
+    }
+    return this._firstChild;
+  }},
+
+  lastChild: { get: function() {
+    var kids = this._childNodes, first;
+    if (kids) {
+      return kids.length === 0 ? null: kids[kids.length-1];
+    }
+    first = this._firstChild;
+    if (first === null) { return null; }
+    return first._previousSibling; // circular linked list
+  }},
+
+  _ensureChildNodes: { value: function() {
+    if (this._childNodes) { return; }
+    var first = this._firstChild,
+        kid = first,
+        childNodes = this._childNodes = new NodeList();
+    if (first) do {
+      childNodes.push(kid);
+      kid = kid._nextSibling;
+    } while (kid !== first); // circular linked list
+    this._firstChild = null; // free memory
+  }},
+
+  // Remove all of this node's children.  This is a minor
+  // optimization that only calls modify() once.
+  removeChildren: { value: function removeChildren() {
+    var root = this.rooted ? this.ownerDocument : null,
+        next = this.firstChild,
+        kid;
+    while (next !== null) {
+      kid = next;
+      next = kid.nextSibling;
+
+      if (root) root.mutateRemove(kid);
+      kid.parentNode = null;
+    }
+    if (this._childNodes) {
+      this._childNodes.length = 0;
+    } else {
+      this._firstChild = null;
+    }
+    this.modify(); // Update last modified type once only
+  }},
+
+});

node_modules/@mixmark-io/domino/CustomEvent.js

@@ -0,0 +1,12 @@
+"use strict";
+module.exports = CustomEvent;
+
+var Event = require('./Event');
+
+function CustomEvent(type, dictionary) {
+  // Just use the superclass constructor to initialize
+  Event.call(this, type, dictionary);
+}
+CustomEvent.prototype = Object.create(Event.prototype, {
+  constructor: { value: CustomEvent }
+});

node_modules/@mixmark-io/domino/DOMException.js

@@ -0,0 +1,134 @@
+"use strict";
+module.exports = DOMException;
+
+var INDEX_SIZE_ERR = 1;
+var HIERARCHY_REQUEST_ERR = 3;
+var WRONG_DOCUMENT_ERR = 4;
+var INVALID_CHARACTER_ERR = 5;
+var NO_MODIFICATION_ALLOWED_ERR = 7;
+var NOT_FOUND_ERR = 8;
+var NOT_SUPPORTED_ERR = 9;
+var INVALID_STATE_ERR = 11;
+var SYNTAX_ERR = 12;
+var INVALID_MODIFICATION_ERR = 13;
+var NAMESPACE_ERR = 14;
+var INVALID_ACCESS_ERR = 15;
+var TYPE_MISMATCH_ERR = 17;
+var SECURITY_ERR = 18;
+var NETWORK_ERR = 19;
+var ABORT_ERR = 20;
+var URL_MISMATCH_ERR = 21;
+var QUOTA_EXCEEDED_ERR = 22;
+var TIMEOUT_ERR = 23;
+var INVALID_NODE_TYPE_ERR = 24;
+var DATA_CLONE_ERR = 25;
+
+// Code to name
+var names = [
+  null,  // No error with code 0
+  'INDEX_SIZE_ERR',
+  null, // historical
+  'HIERARCHY_REQUEST_ERR',
+  'WRONG_DOCUMENT_ERR',
+  'INVALID_CHARACTER_ERR',
+  null, // historical
+  'NO_MODIFICATION_ALLOWED_ERR',
+  'NOT_FOUND_ERR',
+  'NOT_SUPPORTED_ERR',
+  'INUSE_ATTRIBUTE_ERR', // historical
+  'INVALID_STATE_ERR',
+  'SYNTAX_ERR',
+  'INVALID_MODIFICATION_ERR',
+  'NAMESPACE_ERR',
+  'INVALID_ACCESS_ERR',
+  null, // historical
+  'TYPE_MISMATCH_ERR',
+  'SECURITY_ERR',
+  'NETWORK_ERR',
+  'ABORT_ERR',
+  'URL_MISMATCH_ERR',
+  'QUOTA_EXCEEDED_ERR',
+  'TIMEOUT_ERR',
+  'INVALID_NODE_TYPE_ERR',
+  'DATA_CLONE_ERR',
+];
+
+// Code to message
+// These strings are from the 13 May 2011 Editor's Draft of DOM Core.
+// http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html
+// Copyright © 2011 W3C® (MIT, ERCIM, Keio), All Rights Reserved.
+// Used under the terms of the W3C Document License:
+// http://www.w3.org/Consortium/Legal/2002/copyright-documents-20021231
+var messages = [
+  null,  // No error with code 0
+  'INDEX_SIZE_ERR (1): the index is not in the allowed range',
+  null,
+  'HIERARCHY_REQUEST_ERR (3): the operation would yield an incorrect nodes model',
+  'WRONG_DOCUMENT_ERR (4): the object is in the wrong Document, a call to importNode is required',
+  'INVALID_CHARACTER_ERR (5): the string contains invalid characters',
+  null,
+  'NO_MODIFICATION_ALLOWED_ERR (7): the object can not be modified',
+  'NOT_FOUND_ERR (8): the object can not be found here',
+  'NOT_SUPPORTED_ERR (9): this operation is not supported',
+  'INUSE_ATTRIBUTE_ERR (10): setAttributeNode called on owned Attribute',
+  'INVALID_STATE_ERR (11): the object is in an invalid state',
+  'SYNTAX_ERR (12): the string did not match the expected pattern',
+  'INVALID_MODIFICATION_ERR (13): the object can not be modified in this way',
+  'NAMESPACE_ERR (14): the operation is not allowed by Namespaces in XML',
+  'INVALID_ACCESS_ERR (15): the object does not support the operation or argument',
+  null,
+  'TYPE_MISMATCH_ERR (17): the type of the object does not match the expected type',
+  'SECURITY_ERR (18): the operation is insecure',
+  'NETWORK_ERR (19): a network error occurred',
+  'ABORT_ERR (20): the user aborted an operation',
+  'URL_MISMATCH_ERR (21): the given URL does not match another URL',
+  'QUOTA_EXCEEDED_ERR (22): the quota has been exceeded',
+  'TIMEOUT_ERR (23): a timeout occurred',
+  'INVALID_NODE_TYPE_ERR (24): the supplied node is invalid or has an invalid ancestor for this operation',
+  'DATA_CLONE_ERR (25): the object can not be cloned.'
+];
+
+// Name to code
+var constants = {
+  INDEX_SIZE_ERR: INDEX_SIZE_ERR,
+  DOMSTRING_SIZE_ERR: 2, // historical
+  HIERARCHY_REQUEST_ERR: HIERARCHY_REQUEST_ERR,
+  WRONG_DOCUMENT_ERR: WRONG_DOCUMENT_ERR,
+  INVALID_CHARACTER_ERR: INVALID_CHARACTER_ERR,
+  NO_DATA_ALLOWED_ERR: 6, // historical
+  NO_MODIFICATION_ALLOWED_ERR: NO_MODIFICATION_ALLOWED_ERR,
+  NOT_FOUND_ERR: NOT_FOUND_ERR,
+  NOT_SUPPORTED_ERR: NOT_SUPPORTED_ERR,
+  INUSE_ATTRIBUTE_ERR: 10, // historical
+  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,
+  VALIDATION_ERR: 16, // historical
+  TYPE_MISMATCH_ERR: TYPE_MISMATCH_ERR,
+  SECURITY_ERR: SECURITY_ERR,
+  NETWORK_ERR: NETWORK_ERR,
+  ABORT_ERR: ABORT_ERR,
+  URL_MISMATCH_ERR: URL_MISMATCH_ERR,
+  QUOTA_EXCEEDED_ERR: QUOTA_EXCEEDED_ERR,
+  TIMEOUT_ERR: TIMEOUT_ERR,
+  INVALID_NODE_TYPE_ERR: INVALID_NODE_TYPE_ERR,
+  DATA_CLONE_ERR: DATA_CLONE_ERR
+};
+
+function DOMException(code) {
+  Error.call(this);
+  Error.captureStackTrace(this, this.constructor);
+  this.code = code;
+  this.message = messages[code];
+  this.name = names[code];
+}
+DOMException.prototype.__proto__ = Error.prototype;
+
+// Initialize the constants on DOMException and DOMException.prototype
+for(var c in constants) {
+  var v = { value: constants[c] };
+  Object.defineProperty(DOMException, c, v);
+  Object.defineProperty(DOMException.prototype, c, v);
+}

node_modules/@mixmark-io/domino/DOMImplementation.js

@@ -0,0 +1,94 @@
+"use strict";
+module.exports = DOMImplementation;
+
+var Document = require('./Document');
+var DocumentType = require('./DocumentType');
+var HTMLParser = require('./HTMLParser');
+var utils = require('./utils');
+var xml = require('./xmlnames');
+
+// Each document must have its own instance of the domimplementation object
+function DOMImplementation(contextObject) {
+  this.contextObject = contextObject;
+}
+
+
+// Feature/version pairs that DOMImplementation.hasFeature() returns
+// true for.  It returns false for anything else.
+var supportedFeatures = {
+  'xml': { '': true, '1.0': true, '2.0': true },   // DOM Core
+  'core': { '': true, '2.0': true },               // DOM Core
+  'html': { '': true, '1.0': true, '2.0': true} ,  // HTML
+  'xhtml': { '': true, '1.0': true, '2.0': true} , // HTML
+};
+
+DOMImplementation.prototype = {
+  hasFeature: function hasFeature(feature, version) {
+    var f = supportedFeatures[(feature || '').toLowerCase()];
+    return (f && f[version || '']) || false;
+  },
+
+  createDocumentType: function createDocumentType(qualifiedName, publicId, systemId) {
+    if (!xml.isValidQName(qualifiedName)) utils.InvalidCharacterError();
+
+    return new DocumentType(this.contextObject, qualifiedName, publicId, systemId);
+  },
+
+  createDocument: function createDocument(namespace, qualifiedName, doctype) {
+    //
+    // Note that the current DOMCore spec makes it impossible to
+    // create an HTML document with this function, even if the
+    // namespace and doctype are propertly set.  See this thread:
+    // http://lists.w3.org/Archives/Public/www-dom/2011AprJun/0132.html
+    //
+    var d = new Document(false, null);
+    var e;
+
+    if (qualifiedName)
+      e = d.createElementNS(namespace, qualifiedName);
+    else
+      e = null;
+
+    if (doctype) {
+      d.appendChild(doctype);
+    }
+
+    if (e) d.appendChild(e);
+    if (namespace === utils.NAMESPACE.HTML) {
+      d._contentType = 'application/xhtml+xml';
+    } else if (namespace === utils.NAMESPACE.SVG) {
+      d._contentType = 'image/svg+xml';
+    } else {
+      d._contentType = 'application/xml';
+    }
+
+    return d;
+  },
+
+  createHTMLDocument: function createHTMLDocument(titleText) {
+    var d = new Document(true, null);
+    d.appendChild(new DocumentType(d, 'html'));
+    var html = d.createElement('html');
+    d.appendChild(html);
+    var head = d.createElement('head');
+    html.appendChild(head);
+    if (titleText !== undefined) {
+      var title = d.createElement('title');
+      head.appendChild(title);
+      title.appendChild(d.createTextNode(titleText));
+    }
+    html.appendChild(d.createElement('body'));
+    d.modclock = 1; // Start tracking modifications
+    return d;
+  },
+
+  mozSetOutputMutationHandler: function(doc, handler) {
+    doc.mutationHandler = handler;
+  },
+
+  mozGetInputMutationHandler: function(doc) {
+    utils.nyi();
+  },
+
+  mozHTMLParser: HTMLParser,
+};

node_modules/@mixmark-io/domino/DOMTokenList.js

@@ -0,0 +1,186 @@
+"use strict";
+// DOMTokenList implementation based on https://github.com/Raynos/DOM-shim
+var utils = require('./utils');
+
+module.exports = DOMTokenList;
+
+function DOMTokenList(getter, setter) {
+  this._getString = getter;
+  this._setString = setter;
+  this._length = 0;
+  this._lastStringValue = '';
+  this._update();
+}
+
+Object.defineProperties(DOMTokenList.prototype, {
+  length: { get: function() { return this._length; } },
+  item: { value: function(index) {
+    var list = getList(this);
+    if (index < 0 || index >= list.length) {
+      return null;
+    }
+    return list[index];
+  }},
+
+  contains: { value: function(token) {
+    token = String(token); // no error checking for contains()
+    var list = getList(this);
+    return list.indexOf(token) > -1;
+  }},
+
+  add: { value: function() {
+    var list = getList(this);
+    for (var i = 0, len = arguments.length; i < len; i++) {
+      var token = handleErrors(arguments[i]);
+      if (list.indexOf(token) < 0) {
+        list.push(token);
+      }
+    }
+    // Note: as per spec, if handleErrors() throws any errors, we never
+    // make it here and none of the changes take effect.
+    // Also per spec: we run the "update steps" even if no change was
+    // made (ie, if the token already existed)
+    this._update(list);
+  }},
+
+  remove: { value: function() {
+    var list = getList(this);
+    for (var i = 0, len = arguments.length; i < len; i++) {
+      var token = handleErrors(arguments[i]);
+      var index = list.indexOf(token);
+      if (index > -1) {
+        list.splice(index, 1);
+      }
+    }
+    // Note: as per spec, if handleErrors() throws any errors, we never
+    // make it here and none of the changes take effect.
+    // Also per spec: we run the "update steps" even if no change was
+    // made (ie, if the token wasn't previously present)
+    this._update(list);
+  }},
+
+  toggle: { value: function toggle(token, force) {
+    token = handleErrors(token);
+    if (this.contains(token)) {
+      if (force === undefined || force === false) {
+        this.remove(token);
+        return false;
+      }
+      return true;
+    } else {
+      if (force === undefined || force === true) {
+        this.add(token);
+        return true;
+      }
+      return false;
+    }
+  }},
+
+  replace: { value: function replace(token, newToken) {
+    // weird corner case of spec: if `token` contains whitespace, but
+    // `newToken` is the empty string, we must throw SyntaxError not
+    // InvalidCharacterError (sigh)
+    if (String(newToken)==='') { utils.SyntaxError(); }
+    token = handleErrors(token);
+    newToken = handleErrors(newToken);
+    var list = getList(this);
+    var idx = list.indexOf(token);
+    if (idx < 0) {
+      // Note that, per spec, we do not run the update steps on this path.
+      return false;
+    }
+    var idx2 = list.indexOf(newToken);
+    if (idx2 < 0) {
+      list[idx] = newToken;
+    } else {
+      // "replace the first instance of either `token` or `newToken` with
+      // `newToken` and remove all other instances"
+      if (idx < idx2) {
+        list[idx] = newToken;
+        list.splice(idx2, 1);
+      } else {
+        // idx2 is already `newToken`
+        list.splice(idx, 1);
+      }
+    }
+    this._update(list);
+    return true;
+  }},
+
+  toString: { value: function() {
+    return this._getString();
+  }},
+
+  value: {
+    get: function() {
+      return this._getString();
+    },
+    set: function(v) {
+      this._setString(v);
+      this._update();
+    }
+  },
+
+  // Called when the setter is called from outside this interface.
+  _update: { value: function(list) {
+    if (list) {
+      fixIndex(this, list);
+      this._setString(list.join(" ").trim());
+    } else {
+      fixIndex(this, getList(this));
+    }
+    this._lastStringValue = this._getString();
+  } },
+});
+
+function fixIndex(clist, list) {
+  var oldLength = clist._length;
+  var i;
+  clist._length = list.length;
+  for (i = 0; i < list.length; i++) {
+    clist[i] = list[i];
+  }
+  // Clear/free old entries.
+  for (; i < oldLength; i++) {
+    clist[i] = undefined;
+  }
+}
+
+function handleErrors(token) {
+  token = String(token);
+  if (token === "") {
+    utils.SyntaxError();
+  }
+  if (/[ \t\r\n\f]/.test(token)) {
+    utils.InvalidCharacterError();
+  }
+  return token;
+}
+
+function toArray(clist) {
+  var length = clist._length;
+  var arr = Array(length);
+  for (var i = 0; i < length; i++) {
+    arr[i] = clist[i];
+  }
+  return arr;
+}
+
+function getList(clist) {
+  var strProp = clist._getString();
+  if (strProp === clist._lastStringValue) {
+    return toArray(clist);
+  }
+  var str = strProp.replace(/(^[ \t\r\n\f]+)|([ \t\r\n\f]+$)/g, '');
+  if (str === "") {
+    return [];
+  } else {
+    var seen = Object.create(null);
+    return str.split(/[ \t\r\n\f]+/g).filter(function(n) {
+      var key = '$' + n;
+      if (seen[key]) { return false; }
+      seen[key] = true;
+      return true;
+    });
+  }
+}

node_modules/@mixmark-io/domino/Document.js

@@ -0,0 +1,884 @@
+"use strict";
+module.exports = Document;
+
+var Node = require('./Node');
+var NodeList = require('./NodeList');
+var ContainerNode = require('./ContainerNode');
+var Element = require('./Element');
+var Text = require('./Text');
+var Comment = require('./Comment');
+var Event = require('./Event');
+var DocumentFragment = require('./DocumentFragment');
+var ProcessingInstruction = require('./ProcessingInstruction');
+var DOMImplementation = require('./DOMImplementation');
+var TreeWalker = require('./TreeWalker');
+var NodeIterator = require('./NodeIterator');
+var NodeFilter = require('./NodeFilter');
+var URL = require('./URL');
+var select = require('./select');
+var events = require('./events');
+var xml = require('./xmlnames');
+var html = require('./htmlelts');
+var svg = require('./svg');
+var utils = require('./utils');
+var MUTATE = require('./MutationConstants');
+var NAMESPACE = utils.NAMESPACE;
+var isApiWritable = require("./config").isApiWritable;
+
+function Document(isHTML, address) {
+  ContainerNode.call(this);
+  this.nodeType = Node.DOCUMENT_NODE;
+  this.isHTML = isHTML;
+  this._address = address || 'about:blank';
+  this.readyState = 'loading';
+  this.implementation = new DOMImplementation(this);
+
+  // DOMCore says that documents are always associated with themselves
+  this.ownerDocument = null; // ... but W3C tests expect null
+  this._contentType = isHTML ? 'text/html' : 'application/xml';
+
+  // These will be initialized by our custom versions of
+  // appendChild and insertBefore that override the inherited
+  // Node methods.
+  // XXX: override those methods!
+  this.doctype = null;
+  this.documentElement = null;
+
+  // "Associated inert template document"
+  this._templateDocCache = null;
+  // List of active NodeIterators, see NodeIterator#_preremove()
+  this._nodeIterators = null;
+
+  // Documents are always rooted, by definition
+  this._nid = 1;
+  this._nextnid = 2; // For numbering children of the document
+  this._nodes = [null, this];  // nid to node map
+
+  // This maintains the mapping from element ids to element nodes.
+  // We may need to update this mapping every time a node is rooted
+  // or uprooted, and any time an attribute is added, removed or changed
+  // on a rooted element.
+  this.byId = Object.create(null);
+
+  // This property holds a monotonically increasing value akin to
+  // a timestamp used to record the last modification time of nodes
+  // and their subtrees. See the lastModTime attribute and modify()
+  // method of the Node class. And see FilteredElementList for an example
+  // of the use of lastModTime
+  this.modclock = 0;
+}
+
+// Map from lowercase event category names (used as arguments to
+// createEvent()) to the property name in the impl object of the
+// event constructor.
+var supportedEvents = {
+  event: 'Event',
+  customevent: 'CustomEvent',
+  uievent: 'UIEvent',
+  mouseevent: 'MouseEvent'
+};
+
+// Certain arguments to document.createEvent() must be treated specially
+var replacementEvent = {
+  events: 'event',
+  htmlevents: 'event',
+  mouseevents: 'mouseevent',
+  mutationevents: 'mutationevent',
+  uievents: 'uievent'
+};
+
+var mirrorAttr = function(f, name, defaultValue) {
+  return {
+    get: function() {
+      var o = f.call(this);
+      if (o) { return o[name]; }
+      return defaultValue;
+    },
+    set: function(value) {
+      var o = f.call(this);
+      if (o) { o[name] = value; }
+    },
+  };
+};
+
+/** @spec https://dom.spec.whatwg.org/#validate-and-extract */
+function validateAndExtract(namespace, qualifiedName) {
+  var prefix, localName, pos;
+  if (namespace==='') { namespace = null; }
+  // See https://github.com/whatwg/dom/issues/671
+  // and https://github.com/whatwg/dom/issues/319
+  if (!xml.isValidQName(qualifiedName)) {
+    utils.InvalidCharacterError();
+  }
+  prefix = null;
+  localName = qualifiedName;
+
+  pos = qualifiedName.indexOf(':');
+  if (pos >= 0) {
+    prefix = qualifiedName.substring(0, pos);
+    localName = qualifiedName.substring(pos+1);
+  }
+  if (prefix !== null && namespace === null) {
+    utils.NamespaceError();
+  }
+  if (prefix === 'xml' && namespace !== NAMESPACE.XML) {
+    utils.NamespaceError();
+  }
+  if ((prefix === 'xmlns' || qualifiedName === 'xmlns') &&
+      namespace !== NAMESPACE.XMLNS) {
+    utils.NamespaceError();
+  }
+  if (namespace === NAMESPACE.XMLNS && !(prefix==='xmlns' || qualifiedName==='xmlns')) {
+    utils.NamespaceError();
+  }
+  return { namespace: namespace, prefix: prefix, localName: localName };
+}
+
+Document.prototype = Object.create(ContainerNode.prototype, {
+  // This method allows dom.js to communicate with a renderer
+  // that displays the document in some way
+  // XXX: I should probably move this to the window object
+  _setMutationHandler: { value: function(handler) {
+    this.mutationHandler = handler;
+  }},
+
+  // This method allows dom.js to receive event notifications
+  // from the renderer.
+  // XXX: I should probably move this to the window object
+  _dispatchRendererEvent: { value: function(targetNid, type, details) {
+    var target = this._nodes[targetNid];
+    if (!target) return;
+    target._dispatchEvent(new Event(type, details), true);
+  }},
+
+  nodeName: { value: '#document'},
+  nodeValue: {
+    get: function() {
+      return null;
+    },
+    set: function() {}
+  },
+
+  // XXX: DOMCore may remove documentURI, so it is NYI for now
+  documentURI: { get: function() { return this._address; }, set: utils.nyi },
+  compatMode: { get: function() {
+    // The _quirks property is set by the HTML parser
+    return this._quirks ? 'BackCompat' : 'CSS1Compat';
+  }},
+
+  createTextNode: { value: function(data) {
+    return new Text(this, String(data));
+  }},
+  createComment: { value: function(data) {
+    return new Comment(this, data);
+  }},
+  createDocumentFragment: { value: function() {
+    return new DocumentFragment(this);
+  }},
+  createProcessingInstruction: { value: function(target, data) {
+    if (!xml.isValidName(target) || data.indexOf('?>') !== -1)
+      utils.InvalidCharacterError();
+    return new ProcessingInstruction(this, target, data);
+  }},
+
+  createAttribute: { value: function(localName) {
+    localName = String(localName);
+    if (!xml.isValidName(localName)) utils.InvalidCharacterError();
+    if (this.isHTML) {
+      localName = utils.toASCIILowerCase(localName);
+    }
+    return new Element._Attr(null, localName, null, null, '');
+  }},
+  createAttributeNS: { value: function(namespace, qualifiedName) {
+    // Convert parameter types according to WebIDL
+    namespace =
+      (namespace === null || namespace === undefined || namespace === '') ? null :
+      String(namespace);
+    qualifiedName = String(qualifiedName);
+    var ve = validateAndExtract(namespace, qualifiedName);
+    return new Element._Attr(null, ve.localName, ve.prefix, ve.namespace, '');
+  }},
+
+  createElement: { value: function(localName) {
+    localName = String(localName);
+    if (!xml.isValidName(localName)) utils.InvalidCharacterError();
+    // Per spec, namespace should be HTML namespace if "context object is
+    // an HTML document or context object's content type is
+    // "application/xhtml+xml", and null otherwise.
+    if (this.isHTML) {
+      if (/[A-Z]/.test(localName))
+        localName = utils.toASCIILowerCase(localName);
+      return html.createElement(this, localName, null);
+    } else if (this.contentType === 'application/xhtml+xml') {
+      return html.createElement(this, localName, null);
+    } else {
+      return new Element(this, localName, null, null);
+    }
+  }, writable: isApiWritable },
+
+  createElementNS: { value: function(namespace, qualifiedName) {
+    // Convert parameter types according to WebIDL
+    namespace =
+      (namespace === null || namespace === undefined || namespace === '') ? null :
+      String(namespace);
+    qualifiedName = String(qualifiedName);
+    var ve = validateAndExtract(namespace, qualifiedName);
+    return this._createElementNS(ve.localName, ve.namespace, ve.prefix);
+  }, writable: isApiWritable },
+
+  // This is used directly by HTML parser, which allows it to create
+  // elements with localNames containing ':' and non-default namespaces
+  _createElementNS: { value: function(localName, namespace, prefix) {
+    if (namespace === NAMESPACE.HTML) {
+      return html.createElement(this, localName, prefix);
+    }
+    else if (namespace === NAMESPACE.SVG) {
+      return svg.createElement(this, localName, prefix);
+    }
+
+    return new Element(this, localName, namespace, prefix);
+  }},
+
+  createEvent: { value: function createEvent(interfaceName) {
+    interfaceName = interfaceName.toLowerCase();
+    var name = replacementEvent[interfaceName] || interfaceName;
+    var constructor = events[supportedEvents[name]];
+
+    if (constructor) {
+      var e = new constructor();
+      e._initialized = false;
+      return e;
+    }
+    else {
+      utils.NotSupportedError();
+    }
+  }},
+
+  // See: http://www.w3.org/TR/dom/#dom-document-createtreewalker
+  createTreeWalker: {value: function (root, whatToShow, filter) {
+    if (!root) { throw new TypeError("root argument is required"); }
+    if (!(root instanceof Node)) { throw new TypeError("root not a node"); }
+    whatToShow = whatToShow === undefined ? NodeFilter.SHOW_ALL : (+whatToShow);
+    filter = filter === undefined ? null : filter;
+
+    return new TreeWalker(root, whatToShow, filter);
+  }},
+
+  // See: http://www.w3.org/TR/dom/#dom-document-createnodeiterator
+  createNodeIterator: {value: function (root, whatToShow, filter) {
+    if (!root) { throw new TypeError("root argument is required"); }
+    if (!(root instanceof Node)) { throw new TypeError("root not a node"); }
+    whatToShow = whatToShow === undefined ? NodeFilter.SHOW_ALL : (+whatToShow);
+    filter = filter === undefined ? null : filter;
+
+    return new NodeIterator(root, whatToShow, filter);
+  }},
+
+  _attachNodeIterator: { value: function(ni) {
+    // XXX ideally this should be a weak reference from Document to NodeIterator
+    if (!this._nodeIterators) { this._nodeIterators = []; }
+    this._nodeIterators.push(ni);
+  }},
+
+  _detachNodeIterator: { value: function(ni) {
+    // ni should always be in list of node iterators
+    var idx = this._nodeIterators.indexOf(ni);
+    this._nodeIterators.splice(idx, 1);
+  }},
+
+  _preremoveNodeIterators: { value: function(toBeRemoved) {
+    if (this._nodeIterators) {
+      this._nodeIterators.forEach(function(ni) { ni._preremove(toBeRemoved); });
+    }
+  }},
+
+  // Maintain the documentElement and
+  // doctype properties of the document.  Each of the following
+  // methods chains to the Node implementation of the method
+  // to do the actual inserting, removal or replacement.
+
+  _updateDocTypeElement: { value: function _updateDocTypeElement() {
+    this.doctype = this.documentElement = null;
+    for (var kid = this.firstChild; kid !== null; kid = kid.nextSibling) {
+      if (kid.nodeType === Node.DOCUMENT_TYPE_NODE)
+        this.doctype = kid;
+      else if (kid.nodeType === Node.ELEMENT_NODE)
+        this.documentElement = kid;
+    }
+  }},
+
+  insertBefore: { value: function insertBefore(child, refChild) {
+    Node.prototype.insertBefore.call(this, child, refChild);
+    this._updateDocTypeElement();
+    return child;
+  }},
+
+  replaceChild: { value: function replaceChild(node, child) {
+    Node.prototype.replaceChild.call(this, node, child);
+    this._updateDocTypeElement();
+    return child;
+  }},
+
+  removeChild: { value: function removeChild(child) {
+    Node.prototype.removeChild.call(this, child);
+    this._updateDocTypeElement();
+    return child;
+  }},
+
+  getElementById: { value: function(id) {
+    var n = this.byId[id];
+    if (!n) return null;
+    if (n instanceof MultiId) { // there was more than one element with this id
+      return n.getFirst();
+    }
+    return n;
+  }},
+
+  _hasMultipleElementsWithId: { value: function(id) {
+    // Used internally by querySelectorAll optimization
+    return (this.byId[id] instanceof MultiId);
+  }},
+
+  // Just copy this method from the Element prototype
+  getElementsByName: { value: Element.prototype.getElementsByName },
+  getElementsByTagName: { value: Element.prototype.getElementsByTagName },
+  getElementsByTagNameNS: { value: Element.prototype.getElementsByTagNameNS },
+  getElementsByClassName: { value: Element.prototype.getElementsByClassName },
+
+  adoptNode: { value: function adoptNode(node) {
+    if (node.nodeType === Node.DOCUMENT_NODE) utils.NotSupportedError();
+    if (node.nodeType === Node.ATTRIBUTE_NODE) { return node; }
+
+    if (node.parentNode) node.parentNode.removeChild(node);
+
+    if (node.ownerDocument !== this)
+      recursivelySetOwner(node, this);
+
+    return node;
+  }},
+
+  importNode: { value: function importNode(node, deep) {
+    return this.adoptNode(node.cloneNode(deep));
+  }, writable: isApiWritable },
+
+  // The following attributes and methods are from the HTML spec
+  origin: { get: function origin() { return null; } },
+  characterSet: { get: function characterSet() { return "UTF-8"; } },
+  contentType: { get: function contentType() { return this._contentType; } },
+  URL: { get: function URL() { return this._address; } },
+  domain: { get: utils.nyi, set: utils.nyi },
+  referrer: { get: utils.nyi },
+  cookie: { get: utils.nyi, set: utils.nyi },
+  lastModified: { get: utils.nyi },
+  location: {
+	get: function() {
+	  return this.defaultView ? this.defaultView.location : null; // gh #75
+	},
+	set: utils.nyi
+  },
+  _titleElement: {
+    get: function() {
+      // The title element of a document is the first title element in the
+      // document in tree order, if there is one, or null otherwise.
+      return this.getElementsByTagName('title').item(0) || null;
+    }
+  },
+  title: {
+    get: function() {
+      var elt = this._titleElement;
+      // The child text content of the title element, or '' if null.
+      var value = elt ? elt.textContent : '';
+      // Strip and collapse whitespace in value
+      return value.replace(/[ \t\n\r\f]+/g, ' ').replace(/(^ )|( $)/g, '');
+    },
+    set: function(value) {
+      var elt = this._titleElement;
+      var head = this.head;
+      if (!elt && !head) { return; /* according to spec */ }
+      if (!elt) {
+        elt = this.createElement('title');
+        head.appendChild(elt);
+      }
+      elt.textContent = value;
+    }
+  },
+  dir: mirrorAttr(function() {
+    var htmlElement = this.documentElement;
+    if (htmlElement && htmlElement.tagName === 'HTML') { return htmlElement; }
+  }, 'dir', ''),
+  fgColor: mirrorAttr(function() { return this.body; }, 'text', ''),
+  linkColor: mirrorAttr(function() { return this.body; }, 'link', ''),
+  vlinkColor: mirrorAttr(function() { return this.body; }, 'vLink', ''),
+  alinkColor: mirrorAttr(function() { return this.body; }, 'aLink', ''),
+  bgColor: mirrorAttr(function() { return this.body; }, 'bgColor', ''),
+
+  // Historical aliases of Document#characterSet
+  charset: { get: function() { return this.characterSet; } },
+  inputEncoding: { get: function() { return this.characterSet; } },
+
+  scrollingElement: {
+    get: function() {
+      return this._quirks ? this.body : this.documentElement;
+    }
+  },
+
+  // Return the first <body> child of the document element.
+  // XXX For now, setting this attribute is not implemented.
+  body: {
+    get: function() {
+      return namedHTMLChild(this.documentElement, 'body');
+    },
+    set: utils.nyi
+  },
+  // Return the first <head> child of the document element.
+  head: { get: function() {
+    return namedHTMLChild(this.documentElement, 'head');
+  }},
+  images: { get: utils.nyi },
+  embeds: { get: utils.nyi },
+  plugins: { get: utils.nyi },
+  links: { get: utils.nyi },
+  forms: { get: utils.nyi },
+  scripts: { get: utils.nyi },
+  applets: { get: function() { return []; } },
+  activeElement: { get: function() { return null; } },
+  innerHTML: {
+    get: function() { return this.serialize(); },
+    set: utils.nyi
+  },
+  outerHTML: {
+    get: function() { return this.serialize(); },
+    set: utils.nyi
+  },
+
+  write: { value: function(args) {
+    if (!this.isHTML) utils.InvalidStateError();
+
+    // XXX: still have to implement the ignore part
+    if (!this._parser /* && this._ignore_destructive_writes > 0 */ )
+      return;
+
+    if (!this._parser) {
+      // XXX call document.open, etc.
+    }
+
+    var s = arguments.join('');
+
+    // If the Document object's reload override flag is set, then
+    // append the string consisting of the concatenation of all the
+    // arguments to the method to the Document's reload override
+    // buffer.
+    // XXX: don't know what this is about.  Still have to do it
+
+    // If there is no pending parsing-blocking script, have the
+    // tokenizer process the characters that were inserted, one at a
+    // time, processing resulting tokens as they are emitted, and
+    // stopping when the tokenizer reaches the insertion point or when
+    // the processing of the tokenizer is aborted by the tree
+    // construction stage (this can happen if a script end tag token is
+    // emitted by the tokenizer).
+
+    // XXX: still have to do the above. Sounds as if we don't
+    // always call parse() here.  If we're blocked, then we just
+    // insert the text into the stream but don't parse it reentrantly...
+
+    // Invoke the parser reentrantly
+    this._parser.parse(s);
+  }},
+
+  writeln: { value: function writeln(args) {
+    this.write(Array.prototype.join.call(arguments, '') + '\n');
+  }},
+
+  open: { value: function() {
+    this.documentElement = null;
+  }},
+
+  close: { value: function() {
+    this.readyState = 'interactive';
+    this._dispatchEvent(new Event('readystatechange'), true);
+    this._dispatchEvent(new Event('DOMContentLoaded'), true);
+    this.readyState = 'complete';
+    this._dispatchEvent(new Event('readystatechange'), true);
+    if (this.defaultView) {
+      this.defaultView._dispatchEvent(new Event('load'), true);
+    }
+  }},
+
+  // Utility methods
+  clone: { value: function clone() {
+    var d = new Document(this.isHTML, this._address);
+    d._quirks = this._quirks;
+    d._contentType = this._contentType;
+    return d;
+  }},
+
+  // We need to adopt the nodes if we do a deep clone
+  cloneNode: { value: function cloneNode(deep) {
+    var clone = Node.prototype.cloneNode.call(this, false);
+    if (deep) {
+      for (var kid = this.firstChild; kid !== null; kid = kid.nextSibling) {
+        clone._appendChild(clone.importNode(kid, true));
+      }
+    }
+    clone._updateDocTypeElement();
+    return clone;
+  }},
+
+  isEqual: { value: function isEqual(n) {
+    // Any two documents are shallowly equal.
+    // Node.isEqualNode will also test the children
+    return true;
+  }},
+
+  // Implementation-specific function.  Called when a text, comment,
+  // or pi value changes.
+  mutateValue: { value: function(node) {
+    if (this.mutationHandler) {
+      this.mutationHandler({
+        type: MUTATE.VALUE,
+        target: node,
+        data: node.data
+      });
+    }
+  }},
+
+  // Invoked when an attribute's value changes. Attr holds the new
+  // value.  oldval is the old value.  Attribute mutations can also
+  // involve changes to the prefix (and therefore the qualified name)
+  mutateAttr: { value: function(attr, oldval) {
+    // Manage id->element mapping for getElementsById()
+    // XXX: this special case id handling should not go here,
+    // but in the attribute declaration for the id attribute
+    /*
+    if (attr.localName === 'id' && attr.namespaceURI === null) {
+      if (oldval) delId(oldval, attr.ownerElement);
+      addId(attr.value, attr.ownerElement);
+    }
+    */
+    if (this.mutationHandler) {
+      this.mutationHandler({
+        type: MUTATE.ATTR,
+        target: attr.ownerElement,
+        attr: attr
+      });
+    }
+  }},
+
+  // Used by removeAttribute and removeAttributeNS for attributes.
+  mutateRemoveAttr: { value: function(attr) {
+/*
+* This is now handled in Attributes.js
+    // Manage id to element mapping
+    if (attr.localName === 'id' && attr.namespaceURI === null) {
+      this.delId(attr.value, attr.ownerElement);
+    }
+*/
+    if (this.mutationHandler) {
+      this.mutationHandler({
+        type: MUTATE.REMOVE_ATTR,
+        target: attr.ownerElement,
+        attr: attr
+      });
+    }
+  }},
+
+  // Called by Node.removeChild, etc. to remove a rooted element from
+  // the tree. Only needs to generate a single mutation event when a
+  // node is removed, but must recursively mark all descendants as not
+  // rooted.
+  mutateRemove: { value: function(node) {
+    // Send a single mutation event
+    if (this.mutationHandler) {
+      this.mutationHandler({
+        type: MUTATE.REMOVE,
+        target: node.parentNode,
+        node: node
+      });
+    }
+
+    // Mark this and all descendants as not rooted
+    recursivelyUproot(node);
+  }},
+
+  // Called when a new element becomes rooted.  It must recursively
+  // generate mutation events for each of the children, and mark them all
+  // as rooted.
+  mutateInsert: { value: function(node) {
+    // Mark node and its descendants as rooted
+    recursivelyRoot(node);
+
+    // Send a single mutation event
+    if (this.mutationHandler) {
+      this.mutationHandler({
+        type: MUTATE.INSERT,
+        target: node.parentNode,
+        node: node
+      });
+    }
+  }},
+
+  // Called when a rooted element is moved within the document
+  mutateMove: { value: function(node) {
+    if (this.mutationHandler) {
+      this.mutationHandler({
+        type: MUTATE.MOVE,
+        target: node
+      });
+    }
+  }},
+
+
+  // Add a mapping from  id to n for n.ownerDocument
+  addId: { value: function addId(id, n) {
+    var val = this.byId[id];
+    if (!val) {
+      this.byId[id] = n;
+    }
+    else {
+      // TODO: Add a way to opt-out console warnings
+      //console.warn('Duplicate element id ' + id);
+      if (!(val instanceof MultiId)) {
+        val = new MultiId(val);
+        this.byId[id] = val;
+      }
+      val.add(n);
+    }
+  }},
+
+  // Delete the mapping from id to n for n.ownerDocument
+  delId: { value: function delId(id, n) {
+    var val = this.byId[id];
+    utils.assert(val);
+
+    if (val instanceof MultiId) {
+      val.del(n);
+      if (val.length === 1) { // convert back to a single node
+        this.byId[id] = val.downgrade();
+      }
+    }
+    else {
+      this.byId[id] = undefined;
+    }
+  }},
+
+  _resolve: { value: function(href) {
+    //XXX: Cache the URL
+    return new URL(this._documentBaseURL).resolve(href);
+  }},
+
+  _documentBaseURL: { get: function() {
+    // XXX: This is not implemented correctly yet
+    var url = this._address;
+    if (url === 'about:blank') url = '/';
+
+    var base = this.querySelector('base[href]');
+    if (base) {
+      return new URL(url).resolve(base.getAttribute('href'));
+    }
+    return url;
+
+    // The document base URL of a Document object is the
+    // absolute URL obtained by running these substeps:
+
+    //     Let fallback base url be the document's address.
+
+    //     If fallback base url is about:blank, and the
+    //     Document's browsing context has a creator browsing
+    //     context, then let fallback base url be the document
+    //     base URL of the creator Document instead.
+
+    //     If the Document is an iframe srcdoc document, then
+    //     let fallback base url be the document base URL of
+    //     the Document's browsing context's browsing context
+    //     container's Document instead.
+
+    //     If there is no base element that has an href
+    //     attribute, then the document base URL is fallback
+    //     base url; abort these steps. Otherwise, let url be
+    //     the value of the href attribute of the first such
+    //     element.
+
+    //     Resolve url relative to fallback base url (thus,
+    //     the base href attribute isn't affected by xml:base
+    //     attributes).
+
+    //     The document base URL is the result of the previous
+    //     step if it was successful; otherwise it is fallback
+    //     base url.
+  }},
+
+  _templateDoc: { get: function() {
+    if (!this._templateDocCache) {
+      // "associated inert template document"
+      var newDoc = new Document(this.isHTML, this._address);
+      this._templateDocCache = newDoc._templateDocCache = newDoc;
+    }
+    return this._templateDocCache;
+  }},
+
+  querySelector: { value: function(selector) {
+    return select(selector, this)[0];
+  }},
+
+  querySelectorAll: { value: function(selector) {
+    var nodes = select(selector, this);
+    return nodes.item ? nodes : new NodeList(nodes);
+  }}
+
+});
+
+
+var eventHandlerTypes = [
+  'abort', 'canplay', 'canplaythrough', 'change', 'click', 'contextmenu',
+  'cuechange', 'dblclick', 'drag', 'dragend', 'dragenter', 'dragleave',
+  'dragover', 'dragstart', 'drop', 'durationchange', 'emptied', 'ended',
+  'input', 'invalid', 'keydown', 'keypress', 'keyup', 'loadeddata',
+  'loadedmetadata', 'loadstart', 'mousedown', 'mousemove', 'mouseout',
+  'mouseover', 'mouseup', 'mousewheel', 'pause', 'play', 'playing',
+  'progress', 'ratechange', 'readystatechange', 'reset', 'seeked',
+  'seeking', 'select', 'show', 'stalled', 'submit', 'suspend',
+  'timeupdate', 'volumechange', 'waiting',
+
+  'blur', 'error', 'focus', 'load', 'scroll'
+];
+
+// Add event handler idl attribute getters and setters to Document
+eventHandlerTypes.forEach(function(type) {
+  // Define the event handler registration IDL attribute for this type
+  Object.defineProperty(Document.prototype, 'on' + type, {
+    get: function() {
+      return this._getEventHandler(type);
+    },
+    set: function(v) {
+      this._setEventHandler(type, v);
+    }
+  });
+});
+
+function namedHTMLChild(parent, name) {
+  if (parent && parent.isHTML) {
+    for (var kid = parent.firstChild; kid !== null; kid = kid.nextSibling) {
+      if (kid.nodeType === Node.ELEMENT_NODE &&
+        kid.localName === name &&
+        kid.namespaceURI === NAMESPACE.HTML) {
+        return kid;
+      }
+    }
+  }
+  return null;
+}
+
+function root(n) {
+  n._nid = n.ownerDocument._nextnid++;
+  n.ownerDocument._nodes[n._nid] = n;
+  // Manage id to element mapping
+  if (n.nodeType === Node.ELEMENT_NODE) {
+    var id = n.getAttribute('id');
+    if (id) n.ownerDocument.addId(id, n);
+
+    // Script elements need to know when they're inserted
+    // into the document
+    if (n._roothook) n._roothook();
+  }
+}
+
+function uproot(n) {
+  // Manage id to element mapping
+  if (n.nodeType === Node.ELEMENT_NODE) {
+    var id = n.getAttribute('id');
+    if (id) n.ownerDocument.delId(id, n);
+  }
+  n.ownerDocument._nodes[n._nid] = undefined;
+  n._nid = undefined;
+}
+
+function recursivelyRoot(node) {
+  root(node);
+  // XXX:
+  // accessing childNodes on a leaf node creates a new array the
+  // first time, so be careful to write this loop so that it
+  // doesn't do that. node is polymorphic, so maybe this is hard to
+  // optimize?  Try switching on nodeType?
+/*
+  if (node.hasChildNodes()) {
+    var kids = node.childNodes;
+    for(var i = 0, n = kids.length;  i < n; i++)
+      recursivelyRoot(kids[i]);
+  }
+*/
+  if (node.nodeType === Node.ELEMENT_NODE) {
+    for (var kid = node.firstChild; kid !== null; kid = kid.nextSibling)
+      recursivelyRoot(kid);
+  }
+}
+
+function recursivelyUproot(node) {
+  uproot(node);
+  for (var kid = node.firstChild; kid !== null; kid = kid.nextSibling)
+      recursivelyUproot(kid);
+}
+
+function recursivelySetOwner(node, owner) {
+  node.ownerDocument = owner;
+  node._lastModTime = undefined; // mod times are document-based
+  if (Object.prototype.hasOwnProperty.call(node, '_tagName')) {
+    node._tagName = undefined; // Element subclasses might need to change case
+  }
+  for (var kid = node.firstChild; kid !== null; kid = kid.nextSibling)
+    recursivelySetOwner(kid, owner);
+}
+
+// A class for storing multiple nodes with the same ID
+function MultiId(node) {
+  this.nodes = Object.create(null);
+  this.nodes[node._nid] = node;
+  this.length = 1;
+  this.firstNode = undefined;
+}
+
+// Add a node to the list, with O(1) time
+MultiId.prototype.add = function(node) {
+  if (!this.nodes[node._nid]) {
+    this.nodes[node._nid] = node;
+    this.length++;
+    this.firstNode = undefined;
+  }
+};
+
+// Remove a node from the list, with O(1) time
+MultiId.prototype.del = function(node) {
+  if (this.nodes[node._nid]) {
+    delete this.nodes[node._nid];
+    this.length--;
+    this.firstNode = undefined;
+  }
+};
+
+// Get the first node from the list, in the document order
+// Takes O(N) time in the size of the list, with a cache that is invalidated
+// when the list is modified.
+MultiId.prototype.getFirst = function() {
+  /* jshint bitwise: false */
+  if (!this.firstNode) {
+    var nid;
+    for (nid in this.nodes) {
+      if (this.firstNode === undefined ||
+        this.firstNode.compareDocumentPosition(this.nodes[nid]) & Node.DOCUMENT_POSITION_PRECEDING) {
+        this.firstNode = this.nodes[nid];
+      }
+    }
+  }
+  return this.firstNode;
+};
+
+// If there is only one node left, return it. Otherwise return "this".
+MultiId.prototype.downgrade = function() {
+  if (this.length === 1) {
+    var nid;
+    for (nid in this.nodes) {
+      return this.nodes[nid];
+    }
+  }
+  return this;
+};

node_modules/@mixmark-io/domino/DocumentFragment.js

@@ -0,0 +1,71 @@
+"use strict";
+module.exports =  DocumentFragment;
+
+var Node = require('./Node');
+var NodeList = require('./NodeList');
+var ContainerNode = require('./ContainerNode');
+var Element = require('./Element');
+var select = require('./select');
+var utils = require('./utils');
+
+function DocumentFragment(doc) {
+  ContainerNode.call(this);
+  this.nodeType = Node.DOCUMENT_FRAGMENT_NODE;
+  this.ownerDocument = doc;
+}
+
+DocumentFragment.prototype = Object.create(ContainerNode.prototype, {
+  nodeName: { value: '#document-fragment' },
+  nodeValue: {
+    get: function() {
+      return null;
+    },
+    set: function() {}
+  },
+  // Copy the text content getter/setter from Element
+  textContent: Object.getOwnPropertyDescriptor(Element.prototype, 'textContent'),
+
+  // Copy the text content getter/setter from Element
+  innerText: Object.getOwnPropertyDescriptor(Element.prototype, 'innerText'),
+
+  querySelector: { value: function(selector) {
+    // implement in terms of querySelectorAll
+    var nodes = this.querySelectorAll(selector);
+    return nodes.length ? nodes[0] : null;
+  }},
+  querySelectorAll: { value: function(selector) {
+    // create a context
+    var context = Object.create(this);
+    // add some methods to the context for zest implementation, without
+    // adding them to the public DocumentFragment API
+    context.isHTML = true; // in HTML namespace (case-insensitive match)
+    context.getElementsByTagName = Element.prototype.getElementsByTagName;
+    context.nextElement =
+      Object.getOwnPropertyDescriptor(Element.prototype, 'firstElementChild').
+      get;
+    // invoke zest
+    var nodes = select(selector, context);
+    return nodes.item ? nodes : new NodeList(nodes);
+  }},
+
+  // Utility methods
+  clone: { value: function clone() {
+      return new DocumentFragment(this.ownerDocument);
+  }},
+  isEqual: { value: function isEqual(n) {
+      // Any two document fragments are shallowly equal.
+      // Node.isEqualNode() will test their children for equality
+      return true;
+  }},
+
+  // Non-standard, but useful (github issue #73)
+  innerHTML: {
+    get: function() { return this.serialize(); },
+    set: utils.nyi
+  },
+  outerHTML: {
+    get: function() { return this.serialize(); },
+    set: utils.nyi
+  },
+
+});

node_modules/@mixmark-io/domino/DocumentType.js

@@ -0,0 +1,36 @@
+"use strict";
+module.exports = DocumentType;
+
+var Node = require('./Node');
+var Leaf = require('./Leaf');
+var ChildNode = require('./ChildNode');
+
+function DocumentType(ownerDocument, name, publicId, systemId) {
+  Leaf.call(this);
+  this.nodeType = Node.DOCUMENT_TYPE_NODE;
+  this.ownerDocument = ownerDocument || null;
+  this.name = name;
+  this.publicId = publicId || "";
+  this.systemId = systemId || "";
+}
+
+DocumentType.prototype = Object.create(Leaf.prototype, {
+  nodeName: { get: function() { return this.name; }},
+  nodeValue: {
+    get: function() { return null; },
+    set: function() {}
+  },
+
+  // Utility methods
+  clone: { value: function clone() {
+    return new DocumentType(this.ownerDocument, this.name, this.publicId, this.systemId);
+  }},
+
+  isEqual: { value: function isEqual(n) {
+    return this.name === n.name &&
+      this.publicId === n.publicId &&
+      this.systemId === n.systemId;
+  }}
+});
+
+Object.defineProperties(DocumentType.prototype, ChildNode);

node_modules/@mixmark-io/domino/Event.js

@@ -0,0 +1,66 @@
+"use strict";
+module.exports = Event;
+
+Event.CAPTURING_PHASE = 1;
+Event.AT_TARGET = 2;
+Event.BUBBLING_PHASE = 3;
+
+function Event(type, dictionary) {
+  // Initialize basic event properties
+  this.type = '';
+  this.target = null;
+  this.currentTarget = null;
+  this.eventPhase = Event.AT_TARGET;
+  this.bubbles = false;
+  this.cancelable = false;
+  this.isTrusted = false;
+  this.defaultPrevented = false;
+  this.timeStamp = Date.now();
+
+  // Initialize internal flags
+  // XXX: Would it be better to inherit these defaults from the prototype?
+  this._propagationStopped = false;
+  this._immediatePropagationStopped = false;
+  this._initialized = true;
+  this._dispatching = false;
+
+  // Now initialize based on the constructor arguments (if any)
+  if (type) this.type = type;
+  if (dictionary) {
+    for(var p in dictionary) {
+      this[p] = dictionary[p];
+    }
+  }
+}
+
+Event.prototype = Object.create(Object.prototype, {
+  constructor: { value: Event },
+  stopPropagation: { value: function stopPropagation() {
+    this._propagationStopped = true;
+  }},
+
+  stopImmediatePropagation: { value: function stopImmediatePropagation() {
+    this._propagationStopped = true;
+    this._immediatePropagationStopped = true;
+  }},
+
+  preventDefault: { value: function preventDefault() {
+    if (this.cancelable) this.defaultPrevented = true;
+  }},
+
+  initEvent: { value: function initEvent(type, bubbles, cancelable) {
+    this._initialized = true;
+    if (this._dispatching) return;
+
+    this._propagationStopped = false;
+    this._immediatePropagationStopped = false;
+    this.defaultPrevented = false;
+    this.isTrusted = false;
+
+    this.target = null;
+    this.type = type;
+    this.bubbles = bubbles;
+    this.cancelable = cancelable;
+  }},
+
+});

node_modules/@mixmark-io/domino/EventTarget.js

@@ -0,0 +1,298 @@
+"use strict";
+var Event = require('./Event');
+var MouseEvent = require('./MouseEvent');
+var utils = require('./utils');
+
+module.exports = EventTarget;
+
+function EventTarget() {}
+
+EventTarget.prototype = {
+  // XXX
+  // See WebIDL §4.8 for details on object event handlers
+  // and how they should behave.  We actually have to accept
+  // any object to addEventListener... Can't type check it.
+  // on registration.
+
+  // XXX:
+  // Capturing event listeners are sort of rare.  I think I can optimize
+  // them so that dispatchEvent can skip the capturing phase (or much of
+  // it).  Each time a capturing listener is added, increment a flag on
+  // the target node and each of its ancestors.  Decrement when removed.
+  // And update the counter when nodes are added and removed from the
+  // tree as well.  Then, in dispatch event, the capturing phase can
+  // abort if it sees any node with a zero count.
+  addEventListener: function addEventListener(type, listener, capture) {
+    if (!listener) return;
+    if (capture === undefined) capture = false;
+    if (!this._listeners) this._listeners = Object.create(null);
+    if (!this._listeners[type]) this._listeners[type] = [];
+    var list = this._listeners[type];
+
+    // If this listener has already been registered, just return
+    for(var i = 0, n = list.length; i < n; i++) {
+      var l = list[i];
+      if (l.listener === listener && l.capture === capture)
+        return;
+    }
+
+    // Add an object to the list of listeners
+    var obj = { listener: listener, capture: capture };
+    if (typeof listener === 'function') obj.f = listener;
+    list.push(obj);
+  },
+
+  removeEventListener: function removeEventListener(type,
+                            listener,
+                            capture) {
+    if (capture === undefined) capture = false;
+    if (this._listeners) {
+      var list = this._listeners[type];
+      if (list) {
+        // Find the listener in the list and remove it
+        for(var i = 0, n = list.length; i < n; i++) {
+          var l = list[i];
+          if (l.listener === listener && l.capture === capture) {
+            if (list.length === 1) {
+              this._listeners[type] = undefined;
+            }
+            else {
+              list.splice(i, 1);
+            }
+            return;
+          }
+        }
+      }
+    }
+  },
+
+  // This is the public API for dispatching untrusted public events.
+  // See _dispatchEvent for the implementation
+  dispatchEvent: function dispatchEvent(event) {
+    // Dispatch an untrusted event
+    return this._dispatchEvent(event, false);
+  },
+
+  //
+  // See DOMCore §4.4
+  // XXX: I'll probably need another version of this method for
+  // internal use, one that does not set isTrusted to false.
+  // XXX: see Document._dispatchEvent: perhaps that and this could
+  // call a common internal function with different settings of
+  // a trusted boolean argument
+  //
+  // XXX:
+  // The spec has changed in how to deal with handlers registered
+  // on idl or content attributes rather than with addEventListener.
+  // Used to say that they always ran first.  That's how webkit does it
+  // Spec now says that they run in a position determined by
+  // when they were first set.  FF does it that way.  See:
+  // http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#event-handlers
+  //
+  _dispatchEvent: function _dispatchEvent(event, trusted) {
+    if (typeof trusted !== 'boolean') trusted = false;
+    function invoke(target, event) {
+      var type = event.type, phase = event.eventPhase;
+      event.currentTarget = target;
+
+      // If there was an individual handler defined, invoke it first
+      // XXX: see comment above: this shouldn't always be first.
+      if (phase !== Event.CAPTURING_PHASE &&
+        target._handlers && target._handlers[type])
+      {
+        var handler = target._handlers[type];
+        var rv;
+        if (typeof handler === 'function') {
+          rv=handler.call(event.currentTarget, event);
+        }
+        else {
+          var f = handler.handleEvent;
+          if (typeof f !== 'function')
+            throw new TypeError('handleEvent property of ' +
+                                'event handler object is' +
+                                'not a function.');
+          rv=f.call(handler, event);
+        }
+
+        switch(event.type) {
+        case 'mouseover':
+          if (rv === true)  // Historical baggage
+            event.preventDefault();
+          break;
+        case 'beforeunload':
+          // XXX: eventually we need a special case here
+          /* falls through */
+        default:
+          if (rv === false)
+            event.preventDefault();
+          break;
+        }
+      }
+
+      // Now invoke list list of listeners for this target and type
+      var list = target._listeners && target._listeners[type];
+      if (!list) return;
+      list = list.slice();
+      for(var i = 0, n = list.length; i < n; i++) {
+        if (event._immediatePropagationStopped) return;
+        var l = list[i];
+        if ((phase === Event.CAPTURING_PHASE && !l.capture) ||
+          (phase === Event.BUBBLING_PHASE && l.capture))
+          continue;
+        if (l.f) {
+          l.f.call(event.currentTarget, event);
+        }
+        else {
+          var fn = l.listener.handleEvent;
+          if (typeof fn !== 'function')
+            throw new TypeError('handleEvent property of event listener object is not a function.');
+          fn.call(l.listener, event);
+        }
+      }
+    }
+
+    if (!event._initialized || event._dispatching) utils.InvalidStateError();
+    event.isTrusted = trusted;
+
+    // Begin dispatching the event now
+    event._dispatching = true;
+    event.target = this;
+
+    // Build the list of targets for the capturing and bubbling phases
+    // XXX: we'll eventually have to add Window to this list.
+    var ancestors = [];
+    for(var n = this.parentNode; n; n = n.parentNode)
+      ancestors.push(n);
+
+    // Capturing phase
+    event.eventPhase = Event.CAPTURING_PHASE;
+    for(var i = ancestors.length-1; i >= 0; i--) {
+      invoke(ancestors[i], event);
+      if (event._propagationStopped) break;
+    }
+
+    // At target phase
+    if (!event._propagationStopped) {
+      event.eventPhase = Event.AT_TARGET;
+      invoke(this, event);
+    }
+
+    // Bubbling phase
+    if (event.bubbles && !event._propagationStopped) {
+      event.eventPhase = Event.BUBBLING_PHASE;
+      for(var ii = 0, nn = ancestors.length; ii < nn; ii++) {
+        invoke(ancestors[ii], event);
+        if (event._propagationStopped) break;
+      }
+    }
+
+    event._dispatching = false;
+    event.eventPhase = Event.AT_TARGET;
+    event.currentTarget = null;
+
+    // Deal with mouse events and figure out when
+    // a click has happened
+    if (trusted && !event.defaultPrevented && event instanceof MouseEvent) {
+      switch(event.type) {
+      case 'mousedown':
+        this._armed = {
+          x: event.clientX,
+          y: event.clientY,
+          t: event.timeStamp
+        };
+        break;
+      case 'mouseout':
+      case 'mouseover':
+        this._armed = null;
+        break;
+      case 'mouseup':
+        if (this._isClick(event)) this._doClick(event);
+        this._armed = null;
+        break;
+      }
+    }
+
+
+
+    return !event.defaultPrevented;
+  },
+
+  // Determine whether a click occurred
+  // XXX We don't support double clicks for now
+  _isClick: function(event) {
+    return (this._armed !== null &&
+        event.type === 'mouseup' &&
+        event.isTrusted &&
+        event.button === 0 &&
+        event.timeStamp - this._armed.t < 1000 &&
+        Math.abs(event.clientX - this._armed.x) < 10 &&
+        Math.abs(event.clientY - this._armed.Y) < 10);
+  },
+
+  // Clicks are handled like this:
+  // http://www.whatwg.org/specs/web-apps/current-work/multipage/elements.html#interactive-content-0
+  //
+  // Note that this method is similar to the HTMLElement.click() method
+  // The event argument must be the trusted mouseup event
+  _doClick: function(event) {
+    if (this._click_in_progress) return;
+    this._click_in_progress = true;
+
+    // Find the nearest enclosing element that is activatable
+    // An element is activatable if it has a
+    // _post_click_activation_steps hook
+    var activated = this;
+    while(activated && !activated._post_click_activation_steps)
+      activated = activated.parentNode;
+
+    if (activated && activated._pre_click_activation_steps) {
+      activated._pre_click_activation_steps();
+    }
+
+    var click = this.ownerDocument.createEvent('MouseEvent');
+    click.initMouseEvent('click', true, true,
+      this.ownerDocument.defaultView, 1,
+      event.screenX, event.screenY,
+      event.clientX, event.clientY,
+      event.ctrlKey, event.altKey,
+      event.shiftKey, event.metaKey,
+      event.button, null);
+
+    var result = this._dispatchEvent(click, true);
+
+    if (activated) {
+      if (result) {
+        // This is where hyperlinks get followed, for example.
+        if (activated._post_click_activation_steps)
+          activated._post_click_activation_steps(click);
+      }
+      else {
+        if (activated._cancelled_activation_steps)
+          activated._cancelled_activation_steps();
+      }
+    }
+  },
+
+  //
+  // An event handler is like an event listener, but it registered
+  // by setting an IDL or content attribute like onload or onclick.
+  // There can only be one of these at a time for any event type.
+  // This is an internal method for the attribute accessors and
+  // content attribute handlers that need to register events handlers.
+  // The type argument is the same as in addEventListener().
+  // The handler argument is the same as listeners in addEventListener:
+  // it can be a function or an object. Pass null to remove any existing
+  // handler.  Handlers are always invoked before any listeners of
+  // the same type.  They are not invoked during the capturing phase
+  // of event dispatch.
+  //
+  _setEventHandler: function _setEventHandler(type, handler) {
+    if (!this._handlers) this._handlers = Object.create(null);
+    this._handlers[type] = handler;
+  },
+
+  _getEventHandler: function _getEventHandler(type) {
+    return (this._handlers && this._handlers[type]) || null;
+  }
+
+};

node_modules/@mixmark-io/domino/FilteredElementList.js

@@ -0,0 +1,92 @@
+"use strict";
+module.exports = FilteredElementList;
+
+var Node = require('./Node');
+
+//
+// This file defines node list implementation that lazily traverses
+// the document tree (or a subtree rooted at any element) and includes
+// only those elements for which a specified filter function returns true.
+// It is used to implement the
+// {Document,Element}.getElementsBy{TagName,ClassName}{,NS} methods.
+//
+// XXX this should inherit from NodeList
+
+function FilteredElementList(root, filter) {
+  this.root = root;
+  this.filter = filter;
+  this.lastModTime = root.lastModTime;
+  this.done = false;
+  this.cache = [];
+  this.traverse();
+}
+
+FilteredElementList.prototype = Object.create(Object.prototype, {
+  length: { get: function() {
+    this.checkcache();
+    if (!this.done) this.traverse();
+    return this.cache.length;
+  } },
+
+  item: { value: function(n) {
+    this.checkcache();
+    if (!this.done && n >= this.cache.length) {
+      // This can lead to O(N^2) behavior if we stop when we get to n
+      // and the caller is iterating through the items in order; so
+      // be sure to do the full traverse here.
+      this.traverse(/*n*/);
+    }
+    return this.cache[n];
+  } },
+
+  checkcache: { value: function() {
+    if (this.lastModTime !== this.root.lastModTime) {
+      // subtree has changed, so invalidate cache
+      for (var i = this.cache.length-1; i>=0; i--) {
+        this[i] = undefined;
+      }
+      this.cache.length = 0;
+      this.done = false;
+      this.lastModTime = this.root.lastModTime;
+    }
+  } },
+
+  // If n is specified, then traverse the tree until we've found the nth
+  // item (or until we've found all items).  If n is not specified,
+  // traverse until we've found all items.
+  traverse: { value: function(n) {
+    // increment n so we can compare to length, and so it is never falsy
+    if (n !== undefined) n++;
+
+    var elt;
+    while ((elt = this.next()) !== null) {
+      this[this.cache.length] = elt; //XXX Use proxy instead
+      this.cache.push(elt);
+      if (n && this.cache.length === n) return;
+    }
+
+    // no next element, so we've found everything
+    this.done = true;
+  } },
+
+  // Return the next element under root that matches filter
+  next: { value: function() {
+    var start = (this.cache.length === 0) ? this.root // Start at the root or at
+      : this.cache[this.cache.length-1]; // the last element we found
+
+    var elt;
+    if (start.nodeType === Node.DOCUMENT_NODE)
+      elt = start.documentElement;
+    else
+      elt = start.nextElement(this.root);
+
+    while(elt) {
+      if (this.filter(elt)) {
+        return elt;
+      }
+
+      elt = elt.nextElement(this.root);
+    }
+    return null;
+  } },
+});

node_modules/@mixmark-io/domino/Leaf.js

@@ -0,0 +1,37 @@
+"use strict";
+module.exports = Leaf;
+
+var Node = require('./Node');
+var NodeList = require('./NodeList');
+var utils = require('./utils');
+var HierarchyRequestError = utils.HierarchyRequestError;
+var NotFoundError = utils.NotFoundError;
+
+// This class defines common functionality for node subtypes that
+// can never have children
+function Leaf() {
+  Node.call(this);
+}
+
+Leaf.prototype = Object.create(Node.prototype, {
+  hasChildNodes: { value: function() { return false; }},
+  firstChild: { value: null },
+  lastChild: { value: null },
+  insertBefore: { value: function(node, child) {
+    if (!node.nodeType) throw new TypeError('not a node');
+    HierarchyRequestError();
+  }},
+  replaceChild: { value: function(node, child) {
+    if (!node.nodeType) throw new TypeError('not a node');
+    HierarchyRequestError();
+  }},
+  removeChild: { value: function(node) {
+    if (!node.nodeType) throw new TypeError('not a node');
+    NotFoundError();
+  }},
+  removeChildren: { value: function() { /* no op */ }},
+  childNodes: { get: function() {
+    if (!this._childNodes) this._childNodes = new NodeList();
+    return this._childNodes;
+  }}
+});

node_modules/@mixmark-io/domino/LinkedList.js

@@ -0,0 +1,44 @@
+"use strict";
+var utils = require('./utils');
+
+var LinkedList = module.exports = {
+    // basic validity tests on a circular linked list a
+    valid: function(a) {
+        utils.assert(a, "list falsy");
+        utils.assert(a._previousSibling, "previous falsy");
+        utils.assert(a._nextSibling, "next falsy");
+        // xxx check that list is actually circular
+        return true;
+    },
+    // insert a before b
+    insertBefore: function(a, b) {
+        utils.assert(LinkedList.valid(a) && LinkedList.valid(b));
+        var a_first = a, a_last = a._previousSibling;
+        var b_first = b, b_last = b._previousSibling;
+        a_first._previousSibling = b_last;
+        a_last._nextSibling = b_first;
+        b_last._nextSibling = a_first;
+        b_first._previousSibling = a_last;
+        utils.assert(LinkedList.valid(a) && LinkedList.valid(b));
+    },
+    // replace a single node a with a list b (which could be null)
+    replace: function(a, b) {
+        utils.assert(LinkedList.valid(a) && (b===null || LinkedList.valid(b)));
+        if (b!==null) {
+            LinkedList.insertBefore(b, a);
+        }
+        LinkedList.remove(a);
+        utils.assert(LinkedList.valid(a) && (b===null || LinkedList.valid(b)));
+    },
+    // remove single node a from its list
+    remove: function(a) {
+        utils.assert(LinkedList.valid(a));
+        var prev = a._previousSibling;
+        if (prev === a) { return; }
+        var next = a._nextSibling;
+        prev._nextSibling = next;
+        next._previousSibling = prev;
+        a._previousSibling = a._nextSibling = a;
+        utils.assert(LinkedList.valid(a));
+    }
+};

node_modules/@mixmark-io/domino/Location.js

@@ -0,0 +1,56 @@
+"use strict";
+var URL = require('./URL');
+var URLUtils = require('./URLUtils');
+
+module.exports = Location;
+
+function Location(window, href) {
+  this._window = window;
+  this._href = href;
+}
+
+Location.prototype = Object.create(URLUtils.prototype, {
+  constructor: { value: Location },
+
+  // Special behavior when href is set
+  href: {
+    get: function() { return this._href; },
+    set: function(v) { this.assign(v); }
+  },
+
+  assign: { value: function(url) {
+    // Resolve the new url against the current one
+    // XXX:
+    // This is not actually correct. It should be resolved against
+    // the URL of the document of the script. For now, though, I only
+    // support a single window and there is only one base url.
+    // So this is good enough for now.
+    var current = new URL(this._href);
+    var newurl = current.resolve(url);
+
+    // Save the new url
+    this._href = newurl;
+
+    // Start loading the new document!
+    // XXX
+    // This is just something hacked together.
+    // The real algorithm is: http://www.whatwg.org/specs/web-apps/current-work/multipage/history.html#navigate
+  }},
+
+  replace: { value: function(url) {
+    // XXX
+    // Since we aren't tracking history yet, replace is the same as assign
+    this.assign(url);
+  }},
+
+  reload: { value: function() {
+    // XXX:
+    // Actually, the spec is a lot more complicated than this
+    this.assign(this.href);
+  }},
+
+  toString: { value: function() {
+    return this.href;
+  }}
+
+});

node_modules/@mixmark-io/domino/MouseEvent.js

@@ -0,0 +1,52 @@
+"use strict";
+var UIEvent = require('./UIEvent');
+
+module.exports = MouseEvent;
+
+function MouseEvent() {
+  // Just use the superclass constructor to initialize
+  UIEvent.call(this);
+
+  this.screenX = this.screenY = this.clientX = this.clientY = 0;
+  this.ctrlKey = this.altKey = this.shiftKey = this.metaKey = false;
+  this.button = 0;
+  this.buttons = 1;
+  this.relatedTarget = null;
+}
+MouseEvent.prototype = Object.create(UIEvent.prototype, {
+  constructor: { value: MouseEvent },
+  initMouseEvent: { value: function(type, bubbles, cancelable,
+    view, detail,
+    screenX, screenY, clientX, clientY,
+    ctrlKey, altKey, shiftKey, metaKey,
+    button, relatedTarget) {
+
+    this.initEvent(type, bubbles, cancelable, view, detail);
+    this.screenX = screenX;
+    this.screenY = screenY;
+    this.clientX = clientX;
+    this.clientY = clientY;
+    this.ctrlKey = ctrlKey;
+    this.altKey = altKey;
+    this.shiftKey = shiftKey;
+    this.metaKey = metaKey;
+    this.button = button;
+    switch(button) {
+    case 0: this.buttons = 1; break;
+    case 1: this.buttons = 4; break;
+    case 2: this.buttons = 2; break;
+    default: this.buttons = 0; break;
+    }
+    this.relatedTarget = relatedTarget;
+  }},
+
+  getModifierState: { value: function(key) {
+    switch(key) {
+    case "Alt": return this.altKey;
+    case "Control": return this.ctrlKey;
+    case "Shift": return this.shiftKey;
+    case "Meta": return this.metaKey;
+    default: return false;
+    }
+  }}
+});

node_modules/@mixmark-io/domino/MutationConstants.js

@@ -0,0 +1,9 @@
+"use strict";
+module.exports = {
+  VALUE: 1, // The value of a Text, Comment or PI node changed
+  ATTR: 2, // A new attribute was added or an attribute value and/or prefix changed
+  REMOVE_ATTR: 3, // An attribute was removed
+  REMOVE: 4, // A node was removed
+  MOVE: 5, // A node was moved
+  INSERT: 6 // A node (or a subtree of nodes) was inserted
+};

node_modules/@mixmark-io/domino/NamedNodeMap.js

@@ -0,0 +1,41 @@
+"use strict";
+module.exports = NamedNodeMap;
+
+var utils = require('./utils');
+
+/* This is a hacky implementation of NamedNodeMap, intended primarily to
+ * satisfy clients (like dompurify and the web-platform-tests) which check
+ * to ensure that Node#attributes instanceof NamedNodeMap. */
+
+function NamedNodeMap(element) {
+  this.element = element;
+}
+Object.defineProperties(NamedNodeMap.prototype, {
+  length: { get: utils.shouldOverride },
+  item: { value: utils.shouldOverride },
+
+  getNamedItem: { value: function getNamedItem(qualifiedName) {
+    return this.element.getAttributeNode(qualifiedName);
+  } },
+  getNamedItemNS: { value: function getNamedItemNS(namespace, localName) {
+    return this.element.getAttributeNodeNS(namespace, localName);
+  } },
+  setNamedItem: { value: utils.nyi },
+  setNamedItemNS: { value: utils.nyi },
+  removeNamedItem: { value: function removeNamedItem(qualifiedName) {
+    var attr = this.element.getAttributeNode(qualifiedName);
+    if (attr) {
+      this.element.removeAttribute(qualifiedName);
+      return attr;
+    }
+    utils.NotFoundError();
+  } },
+  removeNamedItemNS: { value: function removeNamedItemNS(ns, lname) {
+    var attr = this.element.getAttributeNodeNS(ns, lname);
+    if (attr) {
+      this.element.removeAttributeNS(ns, lname);
+      return attr;
+    }
+    utils.NotFoundError();
+  } },
+});

node_modules/@mixmark-io/domino/NavigatorID.js

@@ -0,0 +1,17 @@
+"use strict";
+
+// https://html.spec.whatwg.org/multipage/webappapis.html#navigatorid
+var NavigatorID = Object.create(null, {
+  appCodeName: { value: "Mozilla" },
+  appName: { value: "Netscape" },
+  appVersion: { value: "4.0" },
+  platform: { value: "" },
+  product: { value: "Gecko" },
+  productSub: { value: "20100101" },
+  userAgent: { value: "" },
+  vendor: { value: "" },
+  vendorSub: { value: "" },
+  taintEnabled: { value: function() { return false; } }
+});
+
+module.exports = NavigatorID;

node_modules/@mixmark-io/domino/Node.js

@@ -0,0 +1,764 @@
+"use strict";
+module.exports = Node;
+
+var EventTarget = require('./EventTarget');
+var LinkedList = require('./LinkedList');
+var NodeUtils = require('./NodeUtils');
+var utils = require('./utils');
+
+// All nodes have a nodeType and an ownerDocument.
+// Once inserted, they also have a parentNode.
+// This is an abstract class; all nodes in a document are instances
+// of a subtype, so all the properties are defined by more specific
+// constructors.
+function Node() {
+  EventTarget.call(this);
+  this.parentNode = null;
+  this._nextSibling = this._previousSibling = this;
+  this._index = undefined;
+}
+
+var ELEMENT_NODE                = Node.ELEMENT_NODE = 1;
+var ATTRIBUTE_NODE              = Node.ATTRIBUTE_NODE = 2;
+var TEXT_NODE                   = Node.TEXT_NODE = 3;
+var CDATA_SECTION_NODE          = Node.CDATA_SECTION_NODE = 4;
+var ENTITY_REFERENCE_NODE       = Node.ENTITY_REFERENCE_NODE = 5;
+var ENTITY_NODE                 = Node.ENTITY_NODE = 6;
+var PROCESSING_INSTRUCTION_NODE = Node.PROCESSING_INSTRUCTION_NODE = 7;
+var COMMENT_NODE                = Node.COMMENT_NODE = 8;
+var DOCUMENT_NODE               = Node.DOCUMENT_NODE = 9;
+var DOCUMENT_TYPE_NODE          = Node.DOCUMENT_TYPE_NODE = 10;
+var DOCUMENT_FRAGMENT_NODE      = Node.DOCUMENT_FRAGMENT_NODE = 11;
+var NOTATION_NODE               = Node.NOTATION_NODE = 12;
+
+var DOCUMENT_POSITION_DISCONNECTED            = Node.DOCUMENT_POSITION_DISCONNECTED = 0x01;
+var DOCUMENT_POSITION_PRECEDING               = Node.DOCUMENT_POSITION_PRECEDING = 0x02;
+var DOCUMENT_POSITION_FOLLOWING               = Node.DOCUMENT_POSITION_FOLLOWING = 0x04;
+var DOCUMENT_POSITION_CONTAINS                = Node.DOCUMENT_POSITION_CONTAINS = 0x08;
+var DOCUMENT_POSITION_CONTAINED_BY            = Node.DOCUMENT_POSITION_CONTAINED_BY = 0x10;
+var DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = Node.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC = 0x20;
+
+Node.prototype = Object.create(EventTarget.prototype, {
+
+  // Node that are not inserted into the tree inherit a null parent
+
+  // XXX: the baseURI attribute is defined by dom core, but
+  // a correct implementation of it requires HTML features, so
+  // we'll come back to this later.
+  baseURI: { get: utils.nyi },
+
+  parentElement: { get: function() {
+    return (this.parentNode && this.parentNode.nodeType===ELEMENT_NODE) ? this.parentNode : null;
+  }},
+
+  hasChildNodes: { value: utils.shouldOverride },
+
+  firstChild: { get: utils.shouldOverride },
+
+  lastChild: { get: utils.shouldOverride },
+
+  isConnected: {
+    get: function () {
+      let node = this;
+      while (node != null) {
+        if (node.nodeType === Node.DOCUMENT_NODE) {
+          return true;
+        }
+
+        node = node.parentNode;
+        if (node != null && node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
+          node = node.host;
+        }
+      }
+      return false;
+    },
+  },
+
+  previousSibling: { get: function() {
+    var parent = this.parentNode;
+    if (!parent) return null;
+    if (this === parent.firstChild) return null;
+    return this._previousSibling;
+  }},
+
+  nextSibling: { get: function() {
+    var parent = this.parentNode, next = this._nextSibling;
+    if (!parent) return null;
+    if (next === parent.firstChild) return null;
+    return next;
+  }},
+
+  textContent: {
+    // Should override for DocumentFragment/Element/Attr/Text/PI/Comment
+    get: function() { return null; },
+    set: function(v) { /* do nothing */ },
+  },
+
+  innerText: {
+    // Should override for DocumentFragment/Element/Attr/Text/PI/Comment
+    get: function() { return null; },
+    set: function(v) { /* do nothing */ },
+  },
+
+  _countChildrenOfType: { value: function(type) {
+    var sum = 0;
+    for (var kid = this.firstChild; kid !== null; kid = kid.nextSibling) {
+      if (kid.nodeType === type) sum++;
+    }
+    return sum;
+  }},
+
+  _ensureInsertValid: { value: function _ensureInsertValid(node, child, isPreinsert) {
+    var parent = this, i, kid;
+    if (!node.nodeType) throw new TypeError('not a node');
+    // 1. If parent is not a Document, DocumentFragment, or Element
+    // node, throw a HierarchyRequestError.
+    switch (parent.nodeType) {
+    case DOCUMENT_NODE:
+    case DOCUMENT_FRAGMENT_NODE:
+    case ELEMENT_NODE:
+      break;
+    default: utils.HierarchyRequestError();
+    }
+    // 2. If node is a host-including inclusive ancestor of parent,
+    // throw a HierarchyRequestError.
+    if (node.isAncestor(parent)) utils.HierarchyRequestError();
+    // 3. If child is not null and its parent is not parent, then
+    // throw a NotFoundError. (replaceChild omits the 'child is not null'
+    // and throws a TypeError here if child is null.)
+    if (child !== null || !isPreinsert) {
+      if (child.parentNode !== parent) utils.NotFoundError();
+    }
+    // 4. If node is not a DocumentFragment, DocumentType, Element,
+    // Text, ProcessingInstruction, or Comment node, throw a
+    // HierarchyRequestError.
+    switch (node.nodeType) {
+    case DOCUMENT_FRAGMENT_NODE:
+    case DOCUMENT_TYPE_NODE:
+    case ELEMENT_NODE:
+    case TEXT_NODE:
+    case PROCESSING_INSTRUCTION_NODE:
+    case COMMENT_NODE:
+      break;
+    default: utils.HierarchyRequestError();
+    }
+    // 5. If either node is a Text node and parent is a document, or
+    // node is a doctype and parent is not a document, throw a
+    // HierarchyRequestError.
+    // 6. If parent is a document, and any of the statements below, switched
+    // on node, are true, throw a HierarchyRequestError.
+    if (parent.nodeType === DOCUMENT_NODE) {
+      switch (node.nodeType) {
+      case TEXT_NODE:
+        utils.HierarchyRequestError();
+        break;
+      case DOCUMENT_FRAGMENT_NODE:
+        // 6a1. If node has more than one element child or has a Text
+        // node child.
+        if (node._countChildrenOfType(TEXT_NODE) > 0)
+          utils.HierarchyRequestError();
+        switch (node._countChildrenOfType(ELEMENT_NODE)) {
+        case 0:
+          break;
+        case 1:
+          // 6a2. Otherwise, if node has one element child and either
+          // parent has an element child, child is a doctype, or child
+          // is not null and a doctype is following child. [preinsert]
+          // 6a2. Otherwise, if node has one element child and either
+          // parent has an element child that is not child or a
+          // doctype is following child. [replaceWith]
+          if (child !== null /* always true here for replaceWith */) {
+            if (isPreinsert && child.nodeType === DOCUMENT_TYPE_NODE)
+              utils.HierarchyRequestError();
+            for (kid = child.nextSibling; kid !== null; kid = kid.nextSibling) {
+              if (kid.nodeType === DOCUMENT_TYPE_NODE)
+                utils.HierarchyRequestError();
+            }
+          }
+          i = parent._countChildrenOfType(ELEMENT_NODE);
+          if (isPreinsert) {
+            // "parent has an element child"
+            if (i > 0)
+              utils.HierarchyRequestError();
+          } else {
+            // "parent has an element child that is not child"
+            if (i > 1 || (i === 1 && child.nodeType !== ELEMENT_NODE))
+              utils.HierarchyRequestError();
+          }
+          break;
+        default: // 6a1, continued. (more than one Element child)
+          utils.HierarchyRequestError();
+        }
+        break;
+      case ELEMENT_NODE:
+        // 6b. parent has an element child, child is a doctype, or
+        // child is not null and a doctype is following child. [preinsert]
+        // 6b. parent has an element child that is not child or a
+        // doctype is following child. [replaceWith]
+        if (child !== null /* always true here for replaceWith */) {
+          if (isPreinsert && child.nodeType === DOCUMENT_TYPE_NODE)
+            utils.HierarchyRequestError();
+          for (kid = child.nextSibling; kid !== null; kid = kid.nextSibling) {
+            if (kid.nodeType === DOCUMENT_TYPE_NODE)
+              utils.HierarchyRequestError();
+          }
+        }
+        i = parent._countChildrenOfType(ELEMENT_NODE);
+        if (isPreinsert) {
+          // "parent has an element child"
+          if (i > 0)
+            utils.HierarchyRequestError();
+        } else {
+          // "parent has an element child that is not child"
+          if (i > 1 || (i === 1 && child.nodeType !== ELEMENT_NODE))
+            utils.HierarchyRequestError();
+        }
+        break;
+      case DOCUMENT_TYPE_NODE:
+        // 6c. parent has a doctype child, child is non-null and an
+        // element is preceding child, or child is null and parent has
+        // an element child. [preinsert]
+        // 6c. parent has a doctype child that is not child, or an
+        // element is preceding child. [replaceWith]
+        if (child === null) {
+          if (parent._countChildrenOfType(ELEMENT_NODE))
+            utils.HierarchyRequestError();
+        } else {
+          // child is always non-null for [replaceWith] case
+          for (kid = parent.firstChild; kid !== null; kid = kid.nextSibling) {
+            if (kid === child) break;
+            if (kid.nodeType === ELEMENT_NODE)
+              utils.HierarchyRequestError();
+          }
+        }
+        i = parent._countChildrenOfType(DOCUMENT_TYPE_NODE);
+        if (isPreinsert) {
+          // "parent has an doctype child"
+          if (i > 0)
+            utils.HierarchyRequestError();
+        } else {
+          // "parent has an doctype child that is not child"
+          if (i > 1 || (i === 1 && child.nodeType !== DOCUMENT_TYPE_NODE))
+            utils.HierarchyRequestError();
+        }
+        break;
+      }
+    } else {
+      // 5, continued: (parent is not a document)
+      if (node.nodeType === DOCUMENT_TYPE_NODE) utils.HierarchyRequestError();
+    }
+  }},
+
+  insertBefore: { value: function insertBefore(node, child) {
+    var parent = this;
+    // 1. Ensure pre-insertion validity
+    parent._ensureInsertValid(node, child, true);
+    // 2. Let reference child be child.
+    var refChild = child;
+    // 3. If reference child is node, set it to node's next sibling
+    if (refChild === node) { refChild = node.nextSibling; }
+    // 4. Adopt node into parent's node document.
+    parent.doc.adoptNode(node);
+    // 5. Insert node into parent before reference child.
+    node._insertOrReplace(parent, refChild, false);
+    // 6. Return node
+    return node;
+  }},
+
+
+  appendChild: { value: function(child) {
+    // This invokes _appendChild after doing validity checks.
+    return this.insertBefore(child, null);
+  }},
+
+  _appendChild: { value: function(child) {
+    child._insertOrReplace(this, null, false);
+  }},
+
+  removeChild: { value: function removeChild(child) {
+    var parent = this;
+    if (!child.nodeType) throw new TypeError('not a node');
+    if (child.parentNode !== parent) utils.NotFoundError();
+    child.remove();
+    return child;
+  }},
+
+  // To replace a `child` with `node` within a `parent` (this)
+  replaceChild: { value: function replaceChild(node, child) {
+    var parent = this;
+    // Ensure validity (slight differences from pre-insertion check)
+    parent._ensureInsertValid(node, child, false);
+    // Adopt node into parent's node document.
+    if (node.doc !== parent.doc) {
+      // XXX adoptNode has side-effect of removing node from its parent
+      // and generating a mutation event, thus causing the _insertOrReplace
+      // to generate two deletes and an insert instead of a 'move'
+      // event.  It looks like the new MutationObserver stuff avoids
+      // this problem, but for now let's only adopt (ie, remove `node`
+      // from its parent) here if we need to.
+      parent.doc.adoptNode(node);
+    }
+    // Do the replace.
+    node._insertOrReplace(parent, child, true);
+    return child;
+  }},
+
+  // See: http://ejohn.org/blog/comparing-document-position/
+  contains: { value: function contains(node) {
+    if (node === null) { return false; }
+    if (this === node) { return true; /* inclusive descendant */ }
+    /* jshint bitwise: false */
+    return (this.compareDocumentPosition(node) &
+            DOCUMENT_POSITION_CONTAINED_BY) !== 0;
+  }},
+
+  compareDocumentPosition: { value: function compareDocumentPosition(that){
+    // Basic algorithm for finding the relative position of two nodes.
+    // Make a list the ancestors of each node, starting with the
+    // document element and proceeding down to the nodes themselves.
+    // Then, loop through the lists, looking for the first element
+    // that differs.  The order of those two elements give the
+    // order of their descendant nodes.  Or, if one list is a prefix
+    // of the other one, then that node contains the other.
+
+    if (this === that) return 0;
+
+    // If they're not owned by the same document or if one is rooted
+    // and one is not, then they're disconnected.
+    if (this.doc !== that.doc ||
+      this.rooted !== that.rooted)
+      return (DOCUMENT_POSITION_DISCONNECTED +
+          DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC);
+
+    // Get arrays of ancestors for this and that
+    var these = [], those = [];
+    for(var n = this; n !== null; n = n.parentNode) these.push(n);
+    for(n = that; n !== null; n = n.parentNode) those.push(n);
+    these.reverse();  // So we start with the outermost
+    those.reverse();
+
+    if (these[0] !== those[0]) // No common ancestor
+      return (DOCUMENT_POSITION_DISCONNECTED +
+          DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC);
+
+    n = Math.min(these.length, those.length);
+    for(var i = 1; i < n; i++) {
+      if (these[i] !== those[i]) {
+        // We found two different ancestors, so compare
+        // their positions
+        if (these[i].index < those[i].index)
+          return DOCUMENT_POSITION_FOLLOWING;
+        else
+          return DOCUMENT_POSITION_PRECEDING;
+      }
+    }
+
+    // If we get to here, then one of the nodes (the one with the
+    // shorter list of ancestors) contains the other one.
+    if (these.length < those.length)
+      return (DOCUMENT_POSITION_FOLLOWING +
+          DOCUMENT_POSITION_CONTAINED_BY);
+    else
+      return (DOCUMENT_POSITION_PRECEDING +
+          DOCUMENT_POSITION_CONTAINS);
+  }},
+
+  isSameNode: {value : function isSameNode(node) {
+    return this === node;
+  }},
+
+
+  // This method implements the generic parts of node equality testing
+  // and defers to the (non-recursive) type-specific isEqual() method
+  // defined by subclasses
+  isEqualNode: { value: function isEqualNode(node) {
+    if (!node) return false;
+    if (node.nodeType !== this.nodeType) return false;
+
+    // Check type-specific properties for equality
+    if (!this.isEqual(node)) return false;
+
+    // Now check children for number and equality
+    for (var c1 = this.firstChild, c2 = node.firstChild;
+         c1 && c2;
+         c1 = c1.nextSibling, c2 = c2.nextSibling) {
+      if (!c1.isEqualNode(c2)) return false;
+    }
+    return c1 === null && c2 === null;
+  }},
+
+  // This method delegates shallow cloning to a clone() method
+  // that each concrete subclass must implement
+  cloneNode: { value: function(deep) {
+    // Clone this node
+    var clone = this.clone();
+
+    // Handle the recursive case if necessary
+    if (deep) {
+      for (var kid = this.firstChild; kid !== null; kid = kid.nextSibling) {
+        clone._appendChild(kid.cloneNode(true));
+      }
+    }
+
+    return clone;
+  }},
+
+  lookupPrefix: { value: function lookupPrefix(ns) {
+    var e;
+    if (ns === '' || ns === null || ns === undefined) return null;
+    switch(this.nodeType) {
+    case ELEMENT_NODE:
+      return this._lookupNamespacePrefix(ns, this);
+    case DOCUMENT_NODE:
+      e = this.documentElement;
+      return e ? e.lookupPrefix(ns) : null;
+    case ENTITY_NODE:
+    case NOTATION_NODE:
+    case DOCUMENT_FRAGMENT_NODE:
+    case DOCUMENT_TYPE_NODE:
+      return null;
+    case ATTRIBUTE_NODE:
+      e = this.ownerElement;
+      return e ? e.lookupPrefix(ns) : null;
+    default:
+      e = this.parentElement;
+      return e ? e.lookupPrefix(ns) : null;
+    }
+  }},
+
+
+  lookupNamespaceURI: {value: function lookupNamespaceURI(prefix) {
+    if (prefix === '' || prefix === undefined) { prefix = null; }
+    var e;
+    switch(this.nodeType) {
+    case ELEMENT_NODE:
+      return utils.shouldOverride();
+    case DOCUMENT_NODE:
+      e = this.documentElement;
+      return e ? e.lookupNamespaceURI(prefix) : null;
+    case ENTITY_NODE:
+    case NOTATION_NODE:
+    case DOCUMENT_TYPE_NODE:
+    case DOCUMENT_FRAGMENT_NODE:
+      return null;
+    case ATTRIBUTE_NODE:
+      e = this.ownerElement;
+      return e ? e.lookupNamespaceURI(prefix) : null;
+    default:
+      e = this.parentElement;
+      return e ? e.lookupNamespaceURI(prefix) : null;
+    }
+  }},
+
+  isDefaultNamespace: { value: function isDefaultNamespace(ns) {
+    if (ns === '' || ns === undefined) { ns = null; }
+    var defaultNamespace = this.lookupNamespaceURI(null);
+    return (defaultNamespace === ns);
+  }},
+
+  // Utility methods for nodes.  Not part of the DOM
+
+  // Return the index of this node in its parent.
+  // Throw if no parent, or if this node is not a child of its parent
+  index: { get: function() {
+    var parent = this.parentNode;
+    if (this === parent.firstChild) return 0; // fast case
+    var kids = parent.childNodes;
+    if (this._index === undefined || kids[this._index] !== this) {
+      // Ensure that we don't have an O(N^2) blowup if none of the
+      // kids have defined indices yet and we're traversing via
+      // nextSibling or previousSibling
+      for (var i=0; i<kids.length; i++) {
+        kids[i]._index = i;
+      }
+      utils.assert(kids[this._index] === this);
+    }
+    return this._index;
+  }},
+
+  // Return true if this node is equal to or is an ancestor of that node
+  // Note that nodes are considered to be ancestors of themselves
+  isAncestor: { value: function(that) {
+    // If they belong to different documents, then they're unrelated.
+    if (this.doc !== that.doc) return false;
+    // If one is rooted and one isn't then they're not related
+    if (this.rooted !== that.rooted) return false;
+
+    // Otherwise check by traversing the parentNode chain
+    for(var e = that; e; e = e.parentNode) {
+      if (e === this) return true;
+    }
+    return false;
+  }},
+
+  // DOMINO Changed the behavior to conform with the specs. See:
+  // https://groups.google.com/d/topic/mozilla.dev.platform/77sIYcpdDmc/discussion
+  ensureSameDoc: { value: function(that) {
+    if (that.ownerDocument === null) {
+      that.ownerDocument = this.doc;
+    }
+    else if(that.ownerDocument !== this.doc) {
+      utils.WrongDocumentError();
+    }
+  }},
+
+  removeChildren: { value: utils.shouldOverride },
+
+  // Insert this node as a child of parent before the specified child,
+  // or insert as the last child of parent if specified child is null,
+  // or replace the specified child with this node, firing mutation events as
+  // necessary
+  _insertOrReplace: { value: function _insertOrReplace(parent, before, isReplace) {
+    var child = this, before_index, i;
+
+    if (child.nodeType === DOCUMENT_FRAGMENT_NODE && child.rooted) {
+      utils.HierarchyRequestError();
+    }
+
+    /* Ensure index of `before` is cached before we (possibly) remove it. */
+    if (parent._childNodes) {
+      before_index = (before === null) ? parent._childNodes.length :
+        before.index; /* ensure _index is cached */
+
+      // If we are already a child of the specified parent, then
+      // the index may have to be adjusted.
+      if (child.parentNode === parent) {
+        var child_index = child.index;
+        // If the child is before the spot it is to be inserted at,
+        // then when it is removed, the index of that spot will be
+        // reduced.
+        if (child_index < before_index) {
+          before_index--;
+        }
+      }
+    }
+
+    // Delete the old child
+    if (isReplace) {
+      if (before.rooted) before.doc.mutateRemove(before);
+      before.parentNode = null;
+    }
+
+    var n = before;
+    if (n === null) { n = parent.firstChild; }
+
+    // If both the child and the parent are rooted, then we want to
+    // transplant the child without uprooting and rerooting it.
+    var bothRooted = child.rooted && parent.rooted;
+    if (child.nodeType === DOCUMENT_FRAGMENT_NODE) {
+      var spliceArgs = [0, isReplace ? 1 : 0], next;
+      for (var kid = child.firstChild; kid !== null; kid = next) {
+        next = kid.nextSibling;
+        spliceArgs.push(kid);
+        kid.parentNode = parent;
+      }
+      var len = spliceArgs.length;
+      // Add all nodes to the new parent, overwriting the old child
+      if (isReplace) {
+        LinkedList.replace(n, len > 2 ? spliceArgs[2] : null);
+      } else if (len > 2 && n !== null) {
+        LinkedList.insertBefore(spliceArgs[2], n);
+      }
+      if (parent._childNodes) {
+        spliceArgs[0] = (before === null) ?
+          parent._childNodes.length : before._index;
+        parent._childNodes.splice.apply(parent._childNodes, spliceArgs);
+        for (i=2; i<len; i++) {
+          spliceArgs[i]._index = spliceArgs[0] + (i - 2);
+        }
+      } else if (parent._firstChild === before) {
+        if (len > 2) {
+          parent._firstChild = spliceArgs[2];
+        } else if (isReplace) {
+          parent._firstChild = null;
+        }
+      }
+      // Remove all nodes from the document fragment
+      if (child._childNodes) {
+        child._childNodes.length = 0;
+      } else {
+        child._firstChild = null;
+      }
+      // Call the mutation handlers
+      // Use spliceArgs since the original array has been destroyed. The
+      // liveness guarantee requires us to clone the array so that
+      // references to the childNodes of the DocumentFragment will be empty
+      // when the insertion handlers are called.
+      if (parent.rooted) {
+        parent.modify();
+        for (i = 2; i < len; i++) {
+          parent.doc.mutateInsert(spliceArgs[i]);
+        }
+      }
+    } else {
+      if (before === child) { return; }
+      if (bothRooted) {
+        // Remove the child from its current position in the tree
+        // without calling remove(), since we don't want to uproot it.
+        child._remove();
+      } else if (child.parentNode) {
+        child.remove();
+      }
+
+      // Insert it as a child of its new parent
+      child.parentNode = parent;
+      if (isReplace) {
+        LinkedList.replace(n, child);
+        if (parent._childNodes) {
+          child._index = before_index;
+          parent._childNodes[before_index] = child;
+        } else if (parent._firstChild === before) {
+          parent._firstChild = child;
+        }
+      } else {
+        if (n !== null) {
+          LinkedList.insertBefore(child, n);
+        }
+        if (parent._childNodes) {
+          child._index = before_index;
+          parent._childNodes.splice(before_index, 0, child);
+        } else if (parent._firstChild === before) {
+          parent._firstChild = child;
+        }
+      }
+      if (bothRooted) {
+        parent.modify();
+        // Generate a move mutation event
+        parent.doc.mutateMove(child);
+      } else if (parent.rooted) {
+        parent.modify();
+        parent.doc.mutateInsert(child);
+      }
+    }
+  }},
+
+
+  // Return the lastModTime value for this node. (For use as a
+  // cache invalidation mechanism. If the node does not already
+  // have one, initialize it from the owner document's modclock
+  // property. (Note that modclock does not return the actual
+  // time; it is simply a counter incremented on each document
+  // modification)
+  lastModTime: { get: function() {
+    if (!this._lastModTime) {
+      this._lastModTime = this.doc.modclock;
+    }
+    return this._lastModTime;
+  }},
+
+  // Increment the owner document's modclock and use the new
+  // value to update the lastModTime value for this node and
+  // all of its ancestors. Nodes that have never had their
+  // lastModTime value queried do not need to have a
+  // lastModTime property set on them since there is no
+  // previously queried value to ever compare the new value
+  // against, so only update nodes that already have a
+  // _lastModTime property.
+  modify: { value: function() {
+    if (this.doc.modclock) { // Skip while doc.modclock == 0
+      var time = ++this.doc.modclock;
+      for(var n = this; n; n = n.parentElement) {
+        if (n._lastModTime) {
+          n._lastModTime = time;
+        }
+      }
+    }
+  }},
+
+  // This attribute is not part of the DOM but is quite helpful.
+  // It returns the document with which a node is associated.  Usually
+  // this is the ownerDocument. But ownerDocument is null for the
+  // document object itself, so this is a handy way to get the document
+  // regardless of the node type
+  doc: { get: function() {
+    return this.ownerDocument || this;
+  }},
+
+
+  // If the node has a nid (node id), then it is rooted in a document
+  rooted: { get: function() {
+    return !!this._nid;
+  }},
+
+  normalize: { value: function() {
+    var next;
+    for (var child=this.firstChild; child !== null; child=next) {
+      next = child.nextSibling;
+
+      if (child.normalize) {
+        child.normalize();
+      }
+
+      if (child.nodeType !== Node.TEXT_NODE) {
+        continue;
+      }
+
+      if (child.nodeValue === "") {
+        this.removeChild(child);
+        continue;
+      }
+
+      var prevChild = child.previousSibling;
+      if (prevChild === null) {
+        continue;
+      } else if (prevChild.nodeType === Node.TEXT_NODE) {
+        // merge this with previous and remove the child
+        prevChild.appendData(child.nodeValue);
+        this.removeChild(child);
+      }
+    }
+  }},
+
+  // Convert the children of a node to an HTML string.
+  // This is used by the innerHTML getter
+  // The serialization spec is at:
+  // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-end.html#serializing-html-fragments
+  //
+  // The serialization logic is intentionally implemented in a separate
+  // `NodeUtils` helper instead of the more obvious choice of a private
+  // `_serializeOne()` method on the `Node.prototype` in order to avoid
+  // the megamorphic `this._serializeOne` property access, which reduces
+  // performance unnecessarily. If you need specialized behavior for a
+  // certain subclass, you'll need to implement that in `NodeUtils`.
+  // See https://github.com/fgnass/domino/pull/142 for more information.
+  serialize: { value: function() {
+    if (this._innerHTML) {
+      return this._innerHTML;
+    }
+    var s = '';
+    for (var kid = this.firstChild; kid !== null; kid = kid.nextSibling) {
+      s += NodeUtils.serializeOne(kid, this);
+    }
+    return s;
+  }},
+
+  // Non-standard, but often useful for debugging.
+  outerHTML: {
+    get: function() {
+      return NodeUtils.serializeOne(this, { nodeType: 0 });
+    },
+    set: utils.nyi,
+  },
+
+  // mirror node type properties in the prototype, so they are present
+  // in instances of Node (and subclasses)
+  ELEMENT_NODE:                { value: ELEMENT_NODE },
+  ATTRIBUTE_NODE:              { value: ATTRIBUTE_NODE },
+  TEXT_NODE:                   { value: TEXT_NODE },
+  CDATA_SECTION_NODE:          { value: CDATA_SECTION_NODE },
+  ENTITY_REFERENCE_NODE:       { value: ENTITY_REFERENCE_NODE },
+  ENTITY_NODE:                 { value: ENTITY_NODE },
+  PROCESSING_INSTRUCTION_NODE: { value: PROCESSING_INSTRUCTION_NODE },
+  COMMENT_NODE:                { value: COMMENT_NODE },
+  DOCUMENT_NODE:               { value: DOCUMENT_NODE },
+  DOCUMENT_TYPE_NODE:          { value: DOCUMENT_TYPE_NODE },
+  DOCUMENT_FRAGMENT_NODE:      { value: DOCUMENT_FRAGMENT_NODE },
+  NOTATION_NODE:               { value: NOTATION_NODE },
+
+  DOCUMENT_POSITION_DISCONNECTED: { value: DOCUMENT_POSITION_DISCONNECTED },
+  DOCUMENT_POSITION_PRECEDING:    { value: DOCUMENT_POSITION_PRECEDING },
+  DOCUMENT_POSITION_FOLLOWING:    { value: DOCUMENT_POSITION_FOLLOWING },
+  DOCUMENT_POSITION_CONTAINS:     { value: DOCUMENT_POSITION_CONTAINS },
+  DOCUMENT_POSITION_CONTAINED_BY: { value: DOCUMENT_POSITION_CONTAINED_BY },
+  DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: { value: DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC },
+});

node_modules/@mixmark-io/domino/NodeFilter.js

@@ -0,0 +1,24 @@
+"use strict";
+var NodeFilter = {
+  // Constants for acceptNode()
+  FILTER_ACCEPT: 1,
+  FILTER_REJECT: 2,
+  FILTER_SKIP: 3,
+
+  // Constants for whatToShow
+  SHOW_ALL: 0xFFFFFFFF,
+  SHOW_ELEMENT: 0x1,
+  SHOW_ATTRIBUTE: 0x2, // historical
+  SHOW_TEXT: 0x4,
+  SHOW_CDATA_SECTION: 0x8, // historical
+  SHOW_ENTITY_REFERENCE: 0x10, // historical
+  SHOW_ENTITY: 0x20, // historical
+  SHOW_PROCESSING_INSTRUCTION: 0x40,
+  SHOW_COMMENT: 0x80,
+  SHOW_DOCUMENT: 0x100,
+  SHOW_DOCUMENT_TYPE: 0x200,
+  SHOW_DOCUMENT_FRAGMENT: 0x400,
+  SHOW_NOTATION: 0x800 // historical
+};
+
+module.exports = (NodeFilter.constructor = NodeFilter.prototype = NodeFilter);

node_modules/@mixmark-io/domino/NodeIterator.js

@@ -0,0 +1,217 @@
+"use strict";
+module.exports = NodeIterator;
+
+var NodeFilter = require('./NodeFilter');
+var NodeTraversal = require('./NodeTraversal');
+var utils = require('./utils');
+
+/* Private methods and helpers */
+
+/**
+ * @based on WebKit's NodeIterator::moveToNext and NodeIterator::moveToPrevious
+ * https://trac.webkit.org/browser/trunk/Source/WebCore/dom/NodeIterator.cpp?rev=186279#L51
+ */
+function move(node, stayWithin, directionIsNext) {
+  if (directionIsNext) {
+    return NodeTraversal.next(node, stayWithin);
+  } else {
+    if (node === stayWithin) {
+      return null;
+    }
+    return NodeTraversal.previous(node, null);
+  }
+}
+
+function isInclusiveAncestor(node, possibleChild) {
+  for ( ; possibleChild; possibleChild = possibleChild.parentNode) {
+    if (node === possibleChild) { return true; }
+  }
+  return false;
+}
+
+/**
+ * @spec http://www.w3.org/TR/dom/#concept-nodeiterator-traverse
+ * @method
+ * @access private
+ * @param {NodeIterator} ni
+ * @param {string} direction One of 'next' or 'previous'.
+ * @return {Node|null}
+ */
+function traverse(ni, directionIsNext) {
+  var node, beforeNode;
+  node = ni._referenceNode;
+  beforeNode = ni._pointerBeforeReferenceNode;
+  while (true) {
+    if (beforeNode === directionIsNext) {
+      beforeNode = !beforeNode;
+    } else {
+      node = move(node, ni._root, directionIsNext);
+      if (node === null) {
+        return null;
+      }
+    }
+    var result = ni._internalFilter(node);
+    if (result === NodeFilter.FILTER_ACCEPT) {
+      break;
+    }
+  }
+  ni._referenceNode = node;
+  ni._pointerBeforeReferenceNode = beforeNode;
+  return node;
+}
+
+/* Public API */
+
+/**
+ * Implemented version: http://www.w3.org/TR/2015/WD-dom-20150618/#nodeiterator
+ * Latest version: http://www.w3.org/TR/dom/#nodeiterator
+ *
+ * @constructor
+ * @param {Node} root
+ * @param {number} whatToShow [optional]
+ * @param {Function|NodeFilter} filter [optional]
+ * @throws Error
+ */
+function NodeIterator(root, whatToShow, filter) {
+  if (!root || !root.nodeType) {
+    utils.NotSupportedError();
+  }
+
+  // Read-only properties
+  this._root = root;
+  this._referenceNode = root;
+  this._pointerBeforeReferenceNode = true;
+  this._whatToShow = Number(whatToShow) || 0;
+  this._filter = filter || null;
+  this._active = false;
+  // Record active node iterators in the document, in order to perform
+  // "node iterator pre-removal steps".
+  root.doc._attachNodeIterator(this);
+}
+
+Object.defineProperties(NodeIterator.prototype, {
+  root: { get: function root() {
+    return this._root;
+  } },
+  referenceNode: { get: function referenceNode() {
+    return this._referenceNode;
+  } },
+  pointerBeforeReferenceNode: { get: function pointerBeforeReferenceNode() {
+    return this._pointerBeforeReferenceNode;
+  } },
+  whatToShow: { get: function whatToShow() {
+    return this._whatToShow;
+  } },
+  filter: { get: function filter() {
+    return this._filter;
+  } },
+
+  /**
+   * @method
+   * @param {Node} node
+   * @return {Number} Constant NodeFilter.FILTER_ACCEPT,
+   *  NodeFilter.FILTER_REJECT or NodeFilter.FILTER_SKIP.
+   */
+  _internalFilter: { value: function _internalFilter(node) {
+    /* jshint bitwise: false */
+    var result, filter;
+    if (this._active) {
+      utils.InvalidStateError();
+    }
+
+    // Maps nodeType to whatToShow
+    if (!(((1 << (node.nodeType - 1)) & this._whatToShow))) {
+      return NodeFilter.FILTER_SKIP;
+    }
+
+    filter = this._filter;
+    if (filter === null) {
+      result = NodeFilter.FILTER_ACCEPT;
+    } else {
+      this._active = true;
+      try {
+        if (typeof filter === 'function') {
+          result = filter(node);
+        } else {
+          result = filter.acceptNode(node);
+        }
+      } finally {
+        this._active = false;
+      }
+    }
+
+    // Note that coercing to a number means that
+    //  `true` becomes `1` (which is NodeFilter.FILTER_ACCEPT)
+    //  `false` becomes `0` (neither accept, reject, or skip)
+    return (+result);
+  } },
+
+  /**
+   * @spec https://dom.spec.whatwg.org/#nodeiterator-pre-removing-steps
+   * @method
+   * @return void
+   */
+  _preremove: { value: function _preremove(toBeRemovedNode) {
+    if (isInclusiveAncestor(toBeRemovedNode, this._root)) { return; }
+    if (!isInclusiveAncestor(toBeRemovedNode, this._referenceNode)) { return; }
+    if (this._pointerBeforeReferenceNode) {
+      var next = toBeRemovedNode;
+      while (next.lastChild) {
+        next = next.lastChild;
+      }
+      next = NodeTraversal.next(next, this.root);
+      if (next) {
+        this._referenceNode = next;
+        return;
+      }
+      this._pointerBeforeReferenceNode = false;
+      // fall through
+    }
+    if (toBeRemovedNode.previousSibling === null) {
+      this._referenceNode = toBeRemovedNode.parentNode;
+    } else {
+      this._referenceNode = toBeRemovedNode.previousSibling;
+      var lastChild;
+      for (lastChild = this._referenceNode.lastChild;
+           lastChild;
+           lastChild = this._referenceNode.lastChild) {
+        this._referenceNode = lastChild;
+      }
+    }
+  } },
+
+  /**
+   * @spec http://www.w3.org/TR/dom/#dom-nodeiterator-nextnode
+   * @method
+   * @return {Node|null}
+   */
+  nextNode: { value: function nextNode() {
+    return traverse(this, true);
+  } },
+
+  /**
+   * @spec http://www.w3.org/TR/dom/#dom-nodeiterator-previousnode
+   * @method
+   * @return {Node|null}
+   */
+  previousNode: { value: function previousNode() {
+    return traverse(this, false);
+  } },
+
+  /**
+   * @spec http://www.w3.org/TR/dom/#dom-nodeiterator-detach
+   * @method
+   * @return void
+   */
+  detach: { value: function detach() {
+    /* "The detach() method must do nothing.
+     * Its functionality (disabling a NodeIterator object) was removed,
+     * but the method itself is preserved for compatibility.
+     */
+  } },
+
+  /** For compatibility with web-platform-tests. */
+  toString: { value: function toString() {
+    return "[object NodeIterator]";
+  } },
+});

node_modules/@mixmark-io/domino/NodeList.es5.js

@@ -0,0 +1,15 @@
+"use strict";
+
+// No support for subclassing array, return an actual Array object.
+function item(i) {
+    /* jshint validthis: true */
+    return this[i] || null;
+}
+
+function NodeList(a) {
+    if (!a) a = [];
+    a.item = item;
+    return a;
+}
+
+module.exports = NodeList;

node_modules/@mixmark-io/domino/NodeList.es6.js

@@ -0,0 +1,12 @@
+/* jshint esversion: 6 */
+"use strict";
+
+module.exports = class NodeList extends Array {
+    constructor(a) {
+        super((a && a.length) || 0);
+        if (a) {
+            for (var idx in a) { this[idx] = a[idx]; }
+        }
+    }
+    item(i) { return this[i] || null; }
+};

node_modules/@mixmark-io/domino/NodeList.js

@@ -0,0 +1,13 @@
+"use strict";
+
+var NodeList;
+
+try {
+    // Attempt to use ES6-style Array subclass if possible.
+    NodeList = require('./NodeList.es6.js');
+} catch (e) {
+    // No support for subclassing array, return an actual Array object.
+    NodeList = require('./NodeList.es5.js');
+}
+
+module.exports = NodeList;

node_modules/@mixmark-io/domino/NodeTraversal.js

@@ -0,0 +1,87 @@
+"use strict";
+/* exported NodeTraversal */
+var NodeTraversal = module.exports = {
+  nextSkippingChildren: nextSkippingChildren,
+  nextAncestorSibling: nextAncestorSibling,
+  next: next,
+  previous: previous,
+  deepLastChild: deepLastChild
+};
+
+/**
+ * @based on WebKit's NodeTraversal::nextSkippingChildren
+ * https://trac.webkit.org/browser/trunk/Source/WebCore/dom/NodeTraversal.h?rev=179143#L109
+ */
+function nextSkippingChildren(node, stayWithin) {
+  if (node === stayWithin) {
+    return null;
+  }
+  if (node.nextSibling !== null) {
+    return node.nextSibling;
+  }
+  return nextAncestorSibling(node, stayWithin);
+}
+
+/**
+ * @based on WebKit's NodeTraversal::nextAncestorSibling
+ * https://trac.webkit.org/browser/trunk/Source/WebCore/dom/NodeTraversal.cpp?rev=179143#L93
+ */
+function nextAncestorSibling(node, stayWithin) {
+  for (node = node.parentNode; node !== null; node = node.parentNode) {
+    if (node === stayWithin) {
+      return null;
+    }
+    if (node.nextSibling !== null) {
+      return node.nextSibling;
+    }
+  }
+  return null;
+}
+
+/**
+ * @based on WebKit's NodeTraversal::next
+ * https://trac.webkit.org/browser/trunk/Source/WebCore/dom/NodeTraversal.h?rev=179143#L99
+ */
+function next(node, stayWithin) {
+  var n;
+  n = node.firstChild;
+  if (n !== null) {
+    return n;
+  }
+  if (node === stayWithin) {
+    return null;
+  }
+  n = node.nextSibling;
+  if (n !== null) {
+    return n;
+  }
+  return nextAncestorSibling(node, stayWithin);
+}
+
+/**
+ * @based on WebKit's NodeTraversal::deepLastChild
+ * https://trac.webkit.org/browser/trunk/Source/WebCore/dom/NodeTraversal.cpp?rev=179143#L116
+ */
+function deepLastChild(node) {
+  while (node.lastChild) {
+    node = node.lastChild;
+  }
+  return node;
+}
+
+/**
+ * @based on WebKit's NodeTraversal::previous
+ * https://trac.webkit.org/browser/trunk/Source/WebCore/dom/NodeTraversal.h?rev=179143#L121
+ */
+function previous(node, stayWithin) {
+  var p;
+  p = node.previousSibling;
+  if (p !== null) {
+    return deepLastChild(p);
+  }
+  p = node.parentNode;
+  if (p === stayWithin) {
+    return null;
+  }
+  return p;
+}

node_modules/@mixmark-io/domino/NodeUtils.js

@@ -0,0 +1,246 @@
+"use strict";
+module.exports = {
+  // NOTE: The `serializeOne()` function used to live on the `Node.prototype`
+  // as a private method `Node#_serializeOne(child)`, however that requires
+  // a megamorphic property access `this._serializeOne` just to get to the
+  // method, and this is being done on lots of different `Node` subclasses,
+  // which puts a lot of pressure on V8's megamorphic stub cache. So by
+  // moving the helper off of the `Node.prototype` and into a separate
+  // function in this helper module, we get a monomorphic property access
+  // `NodeUtils.serializeOne` to get to the function and reduce pressure
+  // on the megamorphic stub cache.
+  // See https://github.com/fgnass/domino/pull/142 for more information.
+  serializeOne: serializeOne,
+
+  // Export util functions so that we can run extra test for them.
+  // Note: we prefix function names with `ɵ`, similar to what we do
+  // with internal functions in Angular packages.
+  ɵescapeMatchingClosingTag: escapeMatchingClosingTag,
+  ɵescapeClosingCommentTag: escapeClosingCommentTag,
+  ɵescapeProcessingInstructionContent: escapeProcessingInstructionContent
+};
+
+var utils = require('./utils');
+var NAMESPACE = utils.NAMESPACE;
+
+var hasRawContent = {
+  STYLE: true,
+  SCRIPT: true,
+  XMP: true,
+  IFRAME: true,
+  NOEMBED: true,
+  NOFRAMES: true,
+  PLAINTEXT: true
+};
+
+var emptyElements = {
+  area: true,
+  base: true,
+  basefont: true,
+  bgsound: true,
+  br: true,
+  col: true,
+  embed: true,
+  frame: true,
+  hr: true,
+  img: true,
+  input: true,
+  keygen: true,
+  link: true,
+  meta: true,
+  param: true,
+  source: true,
+  track: true,
+  wbr: true
+};
+
+var extraNewLine = {
+  /* Removed in https://github.com/whatwg/html/issues/944
+  pre: true,
+  textarea: true,
+  listing: true
+  */
+};
+
+const ESCAPE_REGEXP = /[&<>\u00A0]/g;
+const ESCAPE_ATTR_REGEXP = /[&"<>\u00A0]/g;
+
+function escape(s) {
+  if (!ESCAPE_REGEXP.test(s)) {
+    // nothing to do, fast path
+    return s;
+  }
+
+  return s.replace(ESCAPE_REGEXP, (c) => {
+    switch (c) {
+      case "&":
+        return "&amp;";
+      case "<":
+        return "&lt;";
+      case ">":
+        return "&gt;";
+      case "\u00A0":
+        return "&nbsp;";
+    }
+  });
+}
+
+function escapeAttr(s) {
+  if (!ESCAPE_ATTR_REGEXP.test(s)) {
+    // nothing to do, fast path
+    return s;
+  }
+
+  return s.replace(ESCAPE_ATTR_REGEXP, (c) => {
+    switch (c) {
+      case "<":
+        return "&lt;";
+      case ">":
+        return "&gt;";
+      case "&":
+        return "&amp;";
+      case '"':
+        return "&quot;";
+      case "\u00A0":
+        return "&nbsp;";
+    }
+  });
+}
+
+function attrname(a) {
+  var ns = a.namespaceURI;
+  if (!ns)
+    return a.localName;
+  if (ns === NAMESPACE.XML)
+    return 'xml:' + a.localName;
+  if (ns === NAMESPACE.XLINK)
+    return 'xlink:' + a.localName;
+
+  if (ns === NAMESPACE.XMLNS) {
+    if (a.localName === 'xmlns') return 'xmlns';
+    else return 'xmlns:' + a.localName;
+  }
+  return a.name;
+}
+
+/**
+ * Escapes matching closing tag in a raw text.
+ *
+ * For example, given `<style>#text(</style><script></script>)</style>`,
+ * the parent tag would by "style" and the raw text is
+ * "</style><script></script>". If we come across a matching closing tag
+ * (in out case `</style>`) - replace `<` with `&lt;` to avoid unexpected
+ * and unsafe behavior after de-serialization.
+ */
+function escapeMatchingClosingTag(rawText, parentTag) {
+  const parentClosingTag = '</' + parentTag;
+  if (!rawText.toLowerCase().includes(parentClosingTag)) {
+    return rawText; // fast path
+  }
+  const result = [...rawText];
+  const matches = rawText.matchAll(new RegExp(parentClosingTag, 'ig'));
+  for (const match of matches) {
+    result[match.index] = '&lt;';
+  }
+  return result.join('');
+}
+
+const CLOSING_COMMENT_REGEXP = /--!?>/;
+
+/**
+ * Escapes closing comment tag in a comment content.
+ *
+ * For example, given `#comment('-->')`, the content of a comment would be
+ * updated to `--&gt;` to avoid unexpected and unsafe behavior after
+ * de-serialization.
+ */
+function escapeClosingCommentTag(rawContent) {
+  if (!CLOSING_COMMENT_REGEXP.test(rawContent)) {
+    return rawContent; // fast path
+  }
+  return rawContent.replace(/(--\!?)>/g, '$1&gt;');
+}
+
+/**
+ * Escapes processing instruction content by replacing `>` with `&gt`.
+ */
+function escapeProcessingInstructionContent(rawContent) {
+  return rawContent.includes('>')
+    ? rawContent.replaceAll('>', '&gt;')
+    : rawContent;
+}
+
+function serializeOne(kid, parent) {
+  var s = '';
+  switch(kid.nodeType) {
+    case 1: //ELEMENT_NODE
+      var ns = kid.namespaceURI;
+      var html = ns === NAMESPACE.HTML;
+      var tagname = (html || ns === NAMESPACE.SVG || ns === NAMESPACE.MATHML) ? kid.localName : kid.tagName;
+
+      s += '<' + tagname;
+
+      for(var j = 0, k = kid._numattrs; j < k; j++) {
+        var a = kid._attr(j);
+        s += ' ' + attrname(a);
+        if (a.value !== undefined) s += '="' + escapeAttr(a.value) + '"';
+      }
+      s += '>';
+
+      if (!(html && emptyElements[tagname])) {
+        var ss = kid.serialize();
+        // If an element can have raw content, this content may
+        // potentially require escaping to avoid XSS.
+        if (hasRawContent[tagname.toUpperCase()]) {
+          ss = escapeMatchingClosingTag(ss, tagname);
+        }
+        if (html && extraNewLine[tagname] && ss.charAt(0)==='\n') s += '\n';
+        // Serialize children and add end tag for all others
+        s += ss;
+        s += '</' + tagname + '>';
+      }
+      break;
+    case 3: //TEXT_NODE
+    case 4: //CDATA_SECTION_NODE
+      var parenttag;
+      if (parent.nodeType === 1 /*ELEMENT_NODE*/ &&
+        parent.namespaceURI === NAMESPACE.HTML)
+        parenttag = parent.tagName;
+      else
+        parenttag = '';
+
+      if (hasRawContent[parenttag] ||
+          (parenttag==='NOSCRIPT' && parent.ownerDocument._scripting_enabled)) {
+        s += kid.data;
+      } else {
+        s += escape(kid.data);
+      }
+      break;
+    case 8: //COMMENT_NODE
+      s += '<!--' + escapeClosingCommentTag(kid.data) + '-->';
+      break;
+    case 7: //PROCESSING_INSTRUCTION_NODE
+      const content = escapeProcessingInstructionContent(kid.data);
+      s += '<?' + kid.target + ' ' + content + '?>';
+      break;
+    case 10: //DOCUMENT_TYPE_NODE
+      s += '<!DOCTYPE ' + kid.name;
+
+      if (false) {
+        // Latest HTML serialization spec omits the public/system ID
+        if (kid.publicID) {
+          s += ' PUBLIC "' + kid.publicId + '"';
+        }
+
+        if (kid.systemId) {
+          s += ' "' + kid.systemId + '"';
+        }
+      }
+
+      s += '>';
+      break;
+    default:
+      utils.InvalidStateError();
+  }
+  return s;
+}

node_modules/@mixmark-io/domino/NonDocumentTypeChildNode.js

@@ -0,0 +1,26 @@
+"use strict";
+var Node = require('./Node');
+
+var NonDocumentTypeChildNode = {
+
+  nextElementSibling: { get: function() {
+    if (this.parentNode) {
+      for (var kid = this.nextSibling; kid !== null; kid = kid.nextSibling) {
+        if (kid.nodeType === Node.ELEMENT_NODE) return kid;
+      }
+    }
+    return null;
+  }},
+
+  previousElementSibling: { get: function() {
+    if (this.parentNode) {
+      for (var kid = this.previousSibling; kid !== null; kid = kid.previousSibling) {
+        if (kid.nodeType === Node.ELEMENT_NODE) return kid;
+      }
+    }
+    return null;
+  }}
+
+};
+
+module.exports = NonDocumentTypeChildNode;

node_modules/@mixmark-io/domino/ProcessingInstruction.js

@@ -0,0 +1,44 @@
+"use strict";
+module.exports = ProcessingInstruction;
+
+var Node = require('./Node');
+var CharacterData = require('./CharacterData');
+
+function ProcessingInstruction(doc, target, data) {
+  CharacterData.call(this);
+  this.nodeType = Node.PROCESSING_INSTRUCTION_NODE;
+  this.ownerDocument = doc;
+  this.target = target;
+  this._data = data;
+}
+
+var nodeValue = {
+  get: function() { return this._data; },
+  set: function(v) {
+    if (v === null || v === undefined) { v = ''; } else { v = String(v); }
+    this._data = v;
+    if (this.rooted) this.ownerDocument.mutateValue(this);
+  }
+};
+
+ProcessingInstruction.prototype = Object.create(CharacterData.prototype, {
+  nodeName: { get: function() { return this.target; }},
+  nodeValue: nodeValue,
+  textContent: nodeValue,
+  innerText: nodeValue,
+  data: {
+    get: nodeValue.get,
+    set: function(v) {
+      nodeValue.set.call(this, v===null ? '' : String(v));
+    },
+  },
+
+  // Utility methods
+  clone: { value: function clone() {
+      return new ProcessingInstruction(this.ownerDocument, this.target, this._data);
+  }},
+  isEqual: { value: function isEqual(n) {
+      return this.target === n.target && this._data === n._data;
+  }}
+
+});

node_modules/@mixmark-io/domino/Text.js

@@ -0,0 +1,75 @@
+"use strict";
+module.exports = Text;
+
+var utils = require('./utils');
+var Node = require('./Node');
+var CharacterData = require('./CharacterData');
+
+function Text(doc, data) {
+  CharacterData.call(this);
+  this.nodeType = Node.TEXT_NODE;
+  this.ownerDocument = doc;
+  this._data = data;
+  this._index = undefined;
+}
+
+var nodeValue = {
+  get: function() { return this._data; },
+  set: function(v) {
+    if (v === null || v === undefined) { v = ''; } else { v = String(v); }
+    if (v === this._data) return;
+    this._data = v;
+    if (this.rooted)
+      this.ownerDocument.mutateValue(this);
+    if (this.parentNode &&
+      this.parentNode._textchangehook)
+      this.parentNode._textchangehook(this);
+  }
+};
+
+Text.prototype = Object.create(CharacterData.prototype, {
+  nodeName: { value: "#text" },
+  // These three attributes are all the same.
+  // The data attribute has a [TreatNullAs=EmptyString] but we'll
+  // implement that at the interface level
+  nodeValue: nodeValue,
+  textContent: nodeValue,
+  innerText: nodeValue,
+  data: {
+    get: nodeValue.get,
+    set: function(v) {
+      nodeValue.set.call(this, v===null ? '' : String(v));
+    },
+  },
+
+  splitText: { value: function splitText(offset) {
+    if (offset > this._data.length || offset < 0) utils.IndexSizeError();
+
+    var newdata = this._data.substring(offset),
+      newnode = this.ownerDocument.createTextNode(newdata);
+    this.data = this.data.substring(0, offset);
+
+    var parent = this.parentNode;
+    if (parent !== null)
+      parent.insertBefore(newnode, this.nextSibling);
+
+    return newnode;
+  }},
+
+  wholeText: { get: function wholeText() {
+    var result = this.textContent;
+    for (var next = this.nextSibling; next; next = next.nextSibling) {
+      if (next.nodeType !== Node.TEXT_NODE) { break; }
+      result += next.textContent;
+    }
+    return result;
+  }},
+  // Obsolete, removed from spec.
+  replaceWholeText: { value: utils.nyi },
+
+  // Utility methods
+  clone: { value: function clone() {
+    return new Text(this.ownerDocument, this._data);
+  }},
+
+});

node_modules/@mixmark-io/domino/TreeWalker.js

@@ -0,0 +1,336 @@
+"use strict";
+module.exports = TreeWalker;
+
+var Node = require('./Node');
+var NodeFilter = require('./NodeFilter');
+var NodeTraversal = require('./NodeTraversal');
+var utils = require('./utils');
+
+var mapChild = {
+  first: 'firstChild',
+  last: 'lastChild',
+  next: 'firstChild',
+  previous: 'lastChild'
+};
+
+var mapSibling = {
+  first: 'nextSibling',
+  last: 'previousSibling',
+  next: 'nextSibling',
+  previous: 'previousSibling'
+};
+
+/* Private methods and helpers */
+
+/**
+ * @spec https://dom.spec.whatwg.org/#concept-traverse-children
+ * @method
+ * @access private
+ * @param {TreeWalker} tw
+ * @param {string} type One of 'first' or 'last'.
+ * @return {Node|null}
+ */
+function traverseChildren(tw, type) {
+  var child, node, parent, result, sibling;
+  node = tw._currentNode[mapChild[type]];
+  while (node !== null) {
+    result = tw._internalFilter(node);
+    if (result === NodeFilter.FILTER_ACCEPT) {
+      tw._currentNode = node;
+      return node;
+    }
+    if (result === NodeFilter.FILTER_SKIP) {
+      child = node[mapChild[type]];
+      if (child !== null) {
+        node = child;
+        continue;
+      }
+    }
+    while (node !== null) {
+      sibling = node[mapSibling[type]];
+      if (sibling !== null) {
+        node = sibling;
+        break;
+      }
+      parent = node.parentNode;
+      if (parent === null || parent === tw.root || parent === tw._currentNode) {
+        return null;
+      } else {
+        node = parent;
+      }
+    }
+  }
+  return null;
+}
+
+/**
+ * @spec https://dom.spec.whatwg.org/#concept-traverse-siblings
+ * @method
+ * @access private
+ * @param {TreeWalker} tw
+ * @param {TreeWalker} type One of 'next' or 'previous'.
+ * @return {Node|nul}
+ */
+function traverseSiblings(tw, type) {
+  var node, result, sibling;
+  node = tw._currentNode;
+  if (node === tw.root) {
+    return null;
+  }
+  while (true) {
+    sibling = node[mapSibling[type]];
+    while (sibling !== null) {
+      node = sibling;
+      result = tw._internalFilter(node);
+      if (result === NodeFilter.FILTER_ACCEPT) {
+        tw._currentNode = node;
+        return node;
+      }
+      sibling = node[mapChild[type]];
+      if (result === NodeFilter.FILTER_REJECT || sibling === null) {
+        sibling = node[mapSibling[type]];
+      }
+    }
+    node = node.parentNode;
+    if (node === null || node === tw.root) {
+      return null;
+    }
+    if (tw._internalFilter(node) === NodeFilter.FILTER_ACCEPT) {
+      return null;
+    }
+  }
+}
+
+
+/* Public API */
+
+/**
+ * Latest version: https://dom.spec.whatwg.org/#treewalker
+ *
+ * @constructor
+ * @param {Node} root
+ * @param {number} whatToShow [optional]
+ * @param {Function|NodeFilter} filter [optional]
+ * @throws Error
+ */
+function TreeWalker(root, whatToShow, filter) {
+  if (!root || !root.nodeType) {
+    utils.NotSupportedError();
+  }
+
+  // Read-only properties
+  this._root = root;
+  this._whatToShow = Number(whatToShow) || 0;
+  this._filter = filter || null;
+  this._active = false;
+  // Read-write property
+  this._currentNode = root;
+}
+
+Object.defineProperties(TreeWalker.prototype, {
+  root: { get: function() { return this._root; } },
+  whatToShow: { get: function() { return this._whatToShow; } },
+  filter: { get: function() { return this._filter; } },
+
+  currentNode: {
+    get: function currentNode() {
+      return this._currentNode;
+    },
+    set: function setCurrentNode(v) {
+      if (!(v instanceof Node)) {
+        throw new TypeError("Not a Node"); // `null` is also not a node
+      }
+      this._currentNode = v;
+    },
+  },
+
+  /**
+   * @method
+   * @param {Node} node
+   * @return {Number} Constant NodeFilter.FILTER_ACCEPT,
+   *  NodeFilter.FILTER_REJECT or NodeFilter.FILTER_SKIP.
+   */
+  _internalFilter: { value: function _internalFilter(node) {
+    /* jshint bitwise: false */
+    var result, filter;
+    if (this._active) {
+      utils.InvalidStateError();
+    }
+
+    // Maps nodeType to whatToShow
+    if (!(((1 << (node.nodeType - 1)) & this._whatToShow))) {
+      return NodeFilter.FILTER_SKIP;
+    }
+
+    filter = this._filter;
+    if (filter === null) {
+      result = NodeFilter.FILTER_ACCEPT;
+    } else {
+      this._active = true;
+      try {
+        if (typeof filter === 'function') {
+          result = filter(node);
+        } else {
+          result = filter.acceptNode(node);
+        }
+      } finally {
+        this._active = false;
+      }
+    }
+
+    // Note that coercing to a number means that
+    //  `true` becomes `1` (which is NodeFilter.FILTER_ACCEPT)
+    //  `false` becomes `0` (neither accept, reject, or skip)
+    return (+result);
+  }},
+
+  /**
+   * @spec https://dom.spec.whatwg.org/#dom-treewalker-parentnode
+   * @based on WebKit's TreeWalker::parentNode
+   * https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/dom/TreeWalker.cpp?rev=220453#L50
+   * @method
+   * @return {Node|null}
+   */
+  parentNode: { value: function parentNode() {
+    var node = this._currentNode;
+    while (node !== this.root) {
+      node = node.parentNode;
+      if (node === null) {
+        return null;
+      }
+      if (this._internalFilter(node) === NodeFilter.FILTER_ACCEPT) {
+        this._currentNode = node;
+        return node;
+      }
+    }
+    return null;
+  }},
+
+  /**
+   * @spec https://dom.spec.whatwg.org/#dom-treewalker-firstchild
+   * @method
+   * @return {Node|null}
+   */
+  firstChild: { value: function firstChild() {
+    return traverseChildren(this, 'first');
+  }},
+
+  /**
+   * @spec https://dom.spec.whatwg.org/#dom-treewalker-lastchild
+   * @method
+   * @return {Node|null}
+   */
+  lastChild: { value: function lastChild() {
+    return traverseChildren(this, 'last');
+  }},
+
+  /**
+   * @spec http://www.w3.org/TR/dom/#dom-treewalker-previoussibling
+   * @method
+   * @return {Node|null}
+   */
+  previousSibling: { value: function previousSibling() {
+    return traverseSiblings(this, 'previous');
+  }},
+
+  /**
+   * @spec http://www.w3.org/TR/dom/#dom-treewalker-nextsibling
+   * @method
+   * @return {Node|null}
+   */
+  nextSibling: { value: function nextSibling() {
+    return traverseSiblings(this, 'next');
+  }},
+
+  /**
+   * @spec https://dom.spec.whatwg.org/#dom-treewalker-previousnode
+   * @based on WebKit's TreeWalker::previousNode
+   * https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/dom/TreeWalker.cpp?rev=220453#L181
+   * @method
+   * @return {Node|null}
+   */
+  previousNode: { value: function previousNode() {
+    var node, result, previousSibling, lastChild;
+    node = this._currentNode;
+    while (node !== this._root) {
+      for (previousSibling = node.previousSibling;
+           previousSibling;
+           previousSibling = node.previousSibling) {
+        node = previousSibling;
+        result = this._internalFilter(node);
+        if (result === NodeFilter.FILTER_REJECT) {
+          continue;
+        }
+        for (lastChild = node.lastChild;
+             lastChild;
+             lastChild = node.lastChild) {
+          node = lastChild;
+          result = this._internalFilter(node);
+          if (result === NodeFilter.FILTER_REJECT) {
+            break;
+          }
+        }
+        if (result === NodeFilter.FILTER_ACCEPT) {
+          this._currentNode = node;
+          return node;
+        }
+      }
+      if (node === this.root || node.parentNode === null) {
+        return null;
+      }
+      node = node.parentNode;
+      if (this._internalFilter(node) === NodeFilter.FILTER_ACCEPT) {
+        this._currentNode = node;
+        return node;
+      }
+    }
+    return null;
+  }},
+
+  /**
+   * @spec https://dom.spec.whatwg.org/#dom-treewalker-nextnode
+   * @based on WebKit's TreeWalker::nextNode
+   * https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/dom/TreeWalker.cpp?rev=220453#L228
+   * @method
+   * @return {Node|null}
+   */
+  nextNode: { value: function nextNode() {
+    var node, result, firstChild, nextSibling;
+    node = this._currentNode;
+    result = NodeFilter.FILTER_ACCEPT;
+
+    CHILDREN:
+    while (true) {
+      for (firstChild = node.firstChild;
+           firstChild;
+           firstChild = node.firstChild) {
+        node = firstChild;
+        result = this._internalFilter(node);
+        if (result === NodeFilter.FILTER_ACCEPT) {
+          this._currentNode = node;
+          return node;
+        } else if (result === NodeFilter.FILTER_REJECT) {
+          break;
+        }
+      }
+      for (nextSibling = NodeTraversal.nextSkippingChildren(node, this.root);
+           nextSibling;
+           nextSibling = NodeTraversal.nextSkippingChildren(node, this.root)) {
+        node = nextSibling;
+        result = this._internalFilter(node);
+        if (result === NodeFilter.FILTER_ACCEPT) {
+          this._currentNode = node;
+          return node;
+        } else if (result === NodeFilter.FILTER_SKIP) {
+          continue CHILDREN;
+        }
+      }
+      return null;
+    }
+  }},
+
+  /** For compatibility with web-platform-tests. */
+  toString: { value: function toString() {
+    return "[object TreeWalker]";
+  }},
+});

node_modules/@mixmark-io/domino/UIEvent.js

@@ -0,0 +1,19 @@
+"use strict";
+var Event = require('./Event');
+
+module.exports = UIEvent;
+
+function UIEvent() {
+  // Just use the superclass constructor to initialize
+  Event.call(this);
+  this.view = null; // FF uses the current window
+  this.detail = 0;
+}
+UIEvent.prototype = Object.create(Event.prototype, {
+  constructor: { value: UIEvent },
+  initUIEvent: { value: function(type, bubbles, cancelable, view, detail) {
+    this.initEvent(type, bubbles, cancelable);
+    this.view = view;
+    this.detail = detail;
+  }}
+});

node_modules/@mixmark-io/domino/URL.js

@@ -0,0 +1,194 @@
+"use strict";
+module.exports = URL;
+
+function URL(url) {
+  if (!url) return Object.create(URL.prototype);
+  // Can't use String.trim() since it defines whitespace differently than HTML
+  this.url = url.replace(/^[ \t\n\r\f]+|[ \t\n\r\f]+$/g, "");
+
+  // See http://tools.ietf.org/html/rfc3986#appendix-B
+  // and https://url.spec.whatwg.org/#parsing
+  var match = URL.pattern.exec(this.url);
+  if (match) {
+    if (match[2]) this.scheme = match[2];
+    if (match[4]) {
+      // parse username/password
+      var userinfo = match[4].match(URL.userinfoPattern);
+      if (userinfo) {
+        this.username = userinfo[1];
+        this.password = userinfo[3];
+        match[4] = match[4].substring(userinfo[0].length);
+      }
+      if (match[4].match(URL.portPattern)) {
+        var pos = match[4].lastIndexOf(':');
+        this.host = match[4].substring(0, pos);
+        this.port = match[4].substring(pos+1);
+      }
+      else {
+        this.host = match[4];
+      }
+    }
+    if (match[5]) this.path = match[5];
+    if (match[6]) this.query = match[7];
+    if (match[8]) this.fragment = match[9];
+  }
+}
+
+URL.pattern = /^(([^:\/?#]+):)?(\/\/([^\/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?$/;
+URL.userinfoPattern = /^([^@:]*)(:([^@]*))?@/;
+URL.portPattern = /:\d+$/;
+URL.authorityPattern = /^[^:\/?#]+:\/\//;
+URL.hierarchyPattern = /^[^:\/?#]+:\//;
+
+// Return a percentEncoded version of s.
+// S should be a single-character string
+// XXX: needs to do utf-8 encoding?
+URL.percentEncode = function percentEncode(s) {
+  var c = s.charCodeAt(0);
+  if (c < 256) return "%" + c.toString(16);
+  else throw Error("can't percent-encode codepoints > 255 yet");
+};
+
+URL.prototype = {
+  constructor: URL,
+
+  // XXX: not sure if this is the precise definition of absolute
+  isAbsolute: function() { return !!this.scheme; },
+  isAuthorityBased: function() {
+    return URL.authorityPattern.test(this.url);
+  },
+  isHierarchical: function() {
+    return URL.hierarchyPattern.test(this.url);
+  },
+
+  toString: function() {
+    var s = "";
+    if (this.scheme !== undefined) s += this.scheme + ":";
+    if (this.isAbsolute()) {
+      s += '//';
+      if (this.username || this.password) {
+        s += this.username || '';
+        if (this.password) {
+          s += ':' + this.password;
+        }
+        s += '@';
+      }
+      if (this.host) {
+        s += this.host;
+      }
+    }
+    if (this.port !== undefined) s += ":" + this.port;
+    if (this.path !== undefined) s += this.path;
+    if (this.query !== undefined) s += "?" + this.query;
+    if (this.fragment !== undefined) s += "#" + this.fragment;
+    return s;
+  },
+
+  // See: http://tools.ietf.org/html/rfc3986#section-5.2
+  // and https://url.spec.whatwg.org/#constructors
+  resolve: function(relative) {
+    var base = this;           // The base url we're resolving against
+    var r = new URL(relative); // The relative reference url to resolve
+    var t = new URL();         // The absolute target url we will return
+
+    if (r.scheme !== undefined) {
+      t.scheme = r.scheme;
+      t.username = r.username;
+      t.password = r.password;
+      t.host = r.host;
+      t.port = r.port;
+      t.path = remove_dot_segments(r.path);
+      t.query = r.query;
+    }
+    else {
+      t.scheme = base.scheme;
+      if (r.host !== undefined) {
+        t.username = r.username;
+        t.password = r.password;
+        t.host = r.host;
+        t.port = r.port;
+        t.path = remove_dot_segments(r.path);
+        t.query = r.query;
+      }
+      else {
+        t.username = base.username;
+        t.password = base.password;
+        t.host = base.host;
+        t.port = base.port;
+        if (!r.path) { // undefined or empty
+          t.path = base.path;
+          if (r.query !== undefined)
+            t.query = r.query;
+          else
+            t.query = base.query;
+        }
+        else {
+          if (r.path.charAt(0) === "/") {
+            t.path = remove_dot_segments(r.path);
+          }
+          else {
+            t.path = merge(base.path, r.path);
+            t.path = remove_dot_segments(t.path);
+          }
+          t.query = r.query;
+        }
+      }
+    }
+    t.fragment = r.fragment;
+
+    return t.toString();
+
+
+    function merge(basepath, refpath) {
+      if (base.host !== undefined && !base.path)
+        return "/" + refpath;
+
+      var lastslash = basepath.lastIndexOf("/");
+      if (lastslash === -1)
+        return refpath;
+      else
+        return basepath.substring(0, lastslash+1) + refpath;
+    }
+
+    function remove_dot_segments(path) {
+      if (!path) return path; // For "" or undefined
+
+      var output = "";
+      while(path.length > 0) {
+        if (path === "." || path === "..") {
+          path = "";
+          break;
+        }
+
+        var twochars = path.substring(0,2);
+        var threechars = path.substring(0,3);
+        var fourchars = path.substring(0,4);
+        if (threechars === "../") {
+          path = path.substring(3);
+        }
+        else if (twochars === "./") {
+          path = path.substring(2);
+        }
+        else if (threechars === "/./") {
+          path = "/" + path.substring(3);
+        }
+        else if (twochars === "/." && path.length === 2) {
+          path = "/";
+        }
+        else if (fourchars === "/../" ||
+             (threechars === "/.." && path.length === 3)) {
+          path = "/" + path.substring(4);
+
+          output = output.replace(/\/?[^\/]*$/, "");
+        }
+        else {
+          var segment = path.match(/(\/?([^\/]*))/)[0];
+          output += segment;
+          path = path.substring(segment.length);
+        }
+      }
+
+      return output;
+    }
+  },
+};

node_modules/@mixmark-io/domino/URLUtils.js

@@ -0,0 +1,270 @@
+"use strict";
+var URL = require('./URL');
+
+module.exports = URLUtils;
+
+// Allow the `x == null` pattern.  This is eslint's "null: 'ignore'" option,
+// but jshint doesn't support this.
+/* jshint eqeqeq: false */
+
+// This is an abstract superclass for Location, HTMLAnchorElement and
+// other types that have the standard complement of "URL decomposition
+// IDL attributes".  This is now standardized as URLUtils, see:
+// https://url.spec.whatwg.org/#urlutils
+// Subclasses must define a getter/setter on href.
+// The getter and setter methods parse and rebuild the URL on each
+// invocation; there is no attempt to cache the value and be more efficient
+function URLUtils() {}
+URLUtils.prototype = Object.create(Object.prototype, {
+
+  _url: { get: function() {
+    // XXX: this should do the "Reinitialize url" steps, and "null" should
+    // be a valid return value.
+    return new URL(this.href);
+  } },
+
+  protocol: {
+    get: function() {
+      var url = this._url;
+      if (url && url.scheme) return url.scheme + ":";
+      else return ":";
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute()) {
+        v = v.replace(/:+$/, "");
+        v = v.replace(/[^-+\.a-zA-Z0-9]/g, URL.percentEncode);
+        if (v.length > 0) {
+          url.scheme = v;
+          output = url.toString();
+        }
+      }
+      this.href = output;
+    },
+  },
+
+  host: {
+    get: function() {
+      var url = this._url;
+      if (url.isAbsolute() && url.isAuthorityBased())
+        return url.host + (url.port ? (":" + url.port) : "");
+      else
+        return "";
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute() && url.isAuthorityBased()) {
+        v = v.replace(/[^-+\._~!$&'()*,;:=a-zA-Z0-9]/g, URL.percentEncode);
+        if (v.length > 0) {
+          url.host = v;
+          delete url.port;
+          output = url.toString();
+        }
+      }
+      this.href = output;
+    },
+  },
+
+  hostname: {
+    get: function() {
+      var url = this._url;
+      if (url.isAbsolute() && url.isAuthorityBased())
+        return url.host;
+      else
+        return "";
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute() && url.isAuthorityBased()) {
+        v = v.replace(/^\/+/, "");
+        v = v.replace(/[^-+\._~!$&'()*,;:=a-zA-Z0-9]/g, URL.percentEncode);
+        if (v.length > 0) {
+          url.host = v;
+          output = url.toString();
+        }
+      }
+      this.href = output;
+    },
+  },
+
+  port: {
+    get: function() {
+      var url = this._url;
+      if (url.isAbsolute() && url.isAuthorityBased() && url.port!==undefined)
+        return url.port;
+      else
+        return "";
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute() && url.isAuthorityBased()) {
+        v = '' + v;
+        v = v.replace(/[^0-9].*$/, "");
+        v = v.replace(/^0+/, "");
+        if (v.length === 0) v = "0";
+        if (parseInt(v, 10) <= 65535) {
+          url.port = v;
+          output = url.toString();
+        }
+      }
+      this.href = output;
+    },
+  },
+
+  pathname: {
+    get: function() {
+      var url = this._url;
+      if (url.isAbsolute() && url.isHierarchical())
+        return url.path;
+      else
+        return "";
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute() && url.isHierarchical()) {
+        if (v.charAt(0) !== "/")
+          v = "/" + v;
+        v = v.replace(/[^-+\._~!$&'()*,;:=@\/a-zA-Z0-9]/g, URL.percentEncode);
+        url.path = v;
+        output = url.toString();
+      }
+      this.href = output;
+    },
+  },
+
+  search: {
+    get: function() {
+      var url = this._url;
+      if (url.isAbsolute() && url.isHierarchical() && url.query!==undefined)
+        return "?" + url.query;
+      else
+        return "";
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute() && url.isHierarchical()) {
+        if (v.charAt(0) === "?") v = v.substring(1);
+        v = v.replace(/[^-+\._~!$&'()*,;:=@\/?a-zA-Z0-9]/g, URL.percentEncode);
+        url.query = v;
+        output = url.toString();
+      }
+      this.href = output;
+    },
+  },
+
+  hash: {
+    get: function() {
+      var url = this._url;
+      if (url == null || url.fragment == null || url.fragment === '') {
+        return "";
+      } else {
+        return "#" + url.fragment;
+      }
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+
+      if (v.charAt(0) === "#") v = v.substring(1);
+      v = v.replace(/[^-+\._~!$&'()*,;:=@\/?a-zA-Z0-9]/g, URL.percentEncode);
+      url.fragment = v;
+      output = url.toString();
+
+      this.href = output;
+    },
+  },
+
+  username: {
+    get: function() {
+      var url = this._url;
+      return url.username || '';
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute()) {
+        v = v.replace(/[\x00-\x1F\x7F-\uFFFF "#<>?`\/@\\:]/g, URL.percentEncode);
+        url.username = v;
+        output = url.toString();
+      }
+      this.href = output;
+    },
+  },
+
+  password: {
+    get: function() {
+      var url = this._url;
+      return url.password || '';
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      if (url.isAbsolute()) {
+        if (v==='') {
+          url.password = null;
+        } else {
+          v = v.replace(/[\x00-\x1F\x7F-\uFFFF "#<>?`\/@\\]/g, URL.percentEncode);
+          url.password = v;
+        }
+        output = url.toString();
+      }
+      this.href = output;
+    },
+  },
+
+  origin: { get: function() {
+    var url = this._url;
+    if (url == null) { return ''; }
+    var originForPort = function(defaultPort) {
+      var origin = [url.scheme, url.host, +url.port || defaultPort];
+      // XXX should be "unicode serialization"
+      return origin[0] + '://' + origin[1] +
+        (origin[2] === defaultPort ? '' : (':' + origin[2]));
+    };
+    switch (url.scheme) {
+    case 'ftp':
+      return originForPort(21);
+    case 'gopher':
+      return originForPort(70);
+    case 'http':
+    case 'ws':
+      return originForPort(80);
+    case 'https':
+    case 'wss':
+      return originForPort(443);
+    default:
+      // this is what chrome does
+      return url.scheme + '://';
+    }
+  } },
+
+  /*
+  searchParams: {
+    get: function() {
+      var url = this._url;
+      // XXX
+    },
+    set: function(v) {
+      var output = this.href;
+      var url = new URL(output);
+      // XXX
+      this.href = output;
+    },
+  },
+  */
+});
+
+URLUtils._inherit = function(proto) {
+  // copy getters/setters from URLUtils to o.
+  Object.getOwnPropertyNames(URLUtils.prototype).forEach(function(p) {
+    if (p==='constructor' || p==='href') { return; }
+    var desc = Object.getOwnPropertyDescriptor(URLUtils.prototype, p);
+    Object.defineProperty(proto, p, desc);
+  });
+};

node_modules/@mixmark-io/domino/Window.js

@@ -0,0 +1,60 @@
+"use strict";
+var DOMImplementation = require('./DOMImplementation');
+var EventTarget = require('./EventTarget');
+var Location = require('./Location');
+var utils = require('./utils');
+
+module.exports = Window;
+
+function Window(document) {
+  this.document = document || new DOMImplementation(null).createHTMLDocument("");
+  this.document._scripting_enabled = true;
+  this.document.defaultView = this;
+  this.location = new Location(this, this.document._address || 'about:blank');
+}
+
+Window.prototype = Object.create(EventTarget.prototype, {
+  console: { value: console },
+  history: { value: {
+    back: utils.nyi,
+    forward: utils.nyi,
+    go: utils.nyi
+  }},
+  navigator: { value: require("./NavigatorID") },
+
+  // Self-referential properties
+  window: { get: function() { return this; }},
+  self: { get: function() { return this; }},
+  frames: { get: function() { return this; }},
+
+  // Self-referential properties for a top-level window
+  parent: { get: function() { return this; }},
+  top: { get: function() { return this; }},
+
+  // We don't support any other windows for now
+  length: { value: 0 },           // no frames
+  frameElement: { value: null },  // not part of a frame
+  opener: { value: null },        // not opened by another window
+
+  // The onload event handler.
+  // XXX: need to support a bunch of other event types, too,
+  // and have them interoperate with document.body.
+
+  onload: {
+    get: function() {
+      return this._getEventHandler("load");
+    },
+    set: function(v) {
+      this._setEventHandler("load", v);
+    }
+  },
+
+  // XXX This is a completely broken implementation
+  getComputedStyle: { value: function getComputedStyle(elt) {
+    return elt.style;
+  }}
+
+});
+
+utils.expose(require('./WindowTimers'), Window);
+utils.expose(require('./impl'), Window);

node_modules/@mixmark-io/domino/WindowTimers.js

@@ -0,0 +1,11 @@
+"use strict";
+
+// https://html.spec.whatwg.org/multipage/webappapis.html#windowtimers
+var WindowTimers = {
+  setTimeout: setTimeout,
+  clearTimeout: clearTimeout,
+  setInterval: setInterval,
+  clearInterval: clearInterval
+};
+
+module.exports = WindowTimers;

node_modules/@mixmark-io/domino/attributes.js

@@ -0,0 +1,152 @@
+"use strict";
+var utils = require('./utils');
+
+exports.property = function(attr) {
+  if (Array.isArray(attr.type)) {
+    var valid = Object.create(null);
+    attr.type.forEach(function(val) {
+      valid[val.value || val] = val.alias || val;
+    });
+    var missingValueDefault = attr.missing;
+    if (missingValueDefault===undefined) { missingValueDefault = null; }
+    var invalidValueDefault = attr.invalid;
+    if (invalidValueDefault===undefined) { invalidValueDefault = missingValueDefault; }
+    return {
+      get: function() {
+        var v = this._getattr(attr.name);
+        if (v === null) return missingValueDefault;
+
+        v = valid[v.toLowerCase()];
+        if (v !== undefined) return v;
+        if (invalidValueDefault !== null) return invalidValueDefault;
+        return v;
+      },
+      set: function(v) {
+        this._setattr(attr.name, v);
+      }
+    };
+  }
+  else if (attr.type === Boolean) {
+    return {
+      get: function() {
+        return this.hasAttribute(attr.name);
+      },
+      set: function(v) {
+        if (v) {
+          this._setattr(attr.name, '');
+        }
+        else {
+          this.removeAttribute(attr.name);
+        }
+      }
+    };
+  }
+  else if (attr.type === Number ||
+           attr.type === "long" ||
+           attr.type === "unsigned long" ||
+           attr.type === "limited unsigned long with fallback") {
+    return numberPropDesc(attr);
+  }
+  else if (!attr.type || attr.type === String) {
+    return {
+      get: function() { return this._getattr(attr.name) || ''; },
+      set: function(v) {
+        if (attr.treatNullAsEmptyString && v === null) { v = ''; }
+        this._setattr(attr.name, v);
+      }
+    };
+  }
+  else if (typeof attr.type === 'function') {
+    return attr.type(attr.name, attr);
+  }
+  throw new Error('Invalid attribute definition');
+};
+
+// See http://www.whatwg.org/specs/web-apps/current-work/#reflect
+//
+// defval is the default value. If it is a function, then that function
+// will be invoked as a method of the element to obtain the default.
+// If no default is specified for a given attribute, then the default
+// depends on the type of the attribute, but since this function handles
+// 4 integer cases, you must specify the default value in each call
+//
+// min and max define a valid range for getting the attribute.
+//
+// setmin defines a minimum value when setting.  If the value is less
+// than that, then throw INDEX_SIZE_ERR.
+//
+// Conveniently, JavaScript's parseInt function appears to be
+// compatible with HTML's 'rules for parsing integers'
+function numberPropDesc(a) {
+  var def;
+  if(typeof a.default === 'function') {
+    def = a.default;
+  }
+  else if(typeof a.default === 'number') {
+    def = function() { return a.default; };
+  }
+  else {
+    def = function() { utils.assert(false, typeof a.default); };
+  }
+  var unsigned_long = (a.type === 'unsigned long');
+  var signed_long = (a.type === 'long');
+  var unsigned_fallback = (a.type === 'limited unsigned long with fallback');
+  var min = a.min, max = a.max, setmin = a.setmin;
+  if (min === undefined) {
+    if (unsigned_long) min = 0;
+    if (signed_long) min = -0x80000000;
+    if (unsigned_fallback) min = 1;
+  }
+  if (max === undefined) {
+    if (unsigned_long || signed_long || unsigned_fallback) max = 0x7FFFFFFF;
+  }
+
+  return {
+    get: function() {
+      var v = this._getattr(a.name);
+      var n = a.float ? parseFloat(v) : parseInt(v, 10);
+      if (v === null || !isFinite(n) || (min !== undefined && n < min) || (max !== undefined && n > max)) {
+        return def.call(this);
+      }
+      if (unsigned_long || signed_long || unsigned_fallback) {
+        if (!/^[ \t\n\f\r]*[-+]?[0-9]/.test(v)) { return def.call(this); }
+        n = n|0; // jshint ignore:line
+      }
+      return n;
+    },
+    set: function(v) {
+      if (!a.float) { v = Math.floor(v); }
+      if (setmin !== undefined && v < setmin) {
+        utils.IndexSizeError(a.name + ' set to ' + v);
+      }
+      if (unsigned_long) {
+        v = (v < 0 || v > 0x7FFFFFFF) ? def.call(this) :
+          (v|0);  // jshint ignore:line
+      } else if (unsigned_fallback) {
+        v = (v < 1 || v > 0x7FFFFFFF) ? def.call(this) :
+          (v|0); // jshint ignore:line
+      } else if (signed_long) {
+        v = (v < -0x80000000 || v > 0x7FFFFFFF) ? def.call(this) :
+          (v|0); // jshint ignore:line
+      }
+      this._setattr(a.name, String(v));
+    }
+  };
+}
+
+// This is a utility function for setting up change handler functions
+// for attributes like 'id' that require special handling when they change.
+exports.registerChangeHandler = function(c, name, handler) {
+  var p = c.prototype;
+
+  // If p does not already have its own _attributeChangeHandlers
+  // then create one for it, inheriting from the inherited
+  // _attributeChangeHandlers. At the top (for the Element class) the
+  // _attributeChangeHandlers object will be created with a null prototype.
+  if (!Object.prototype.hasOwnProperty.call(p, '_attributeChangeHandlers')) {
+    p._attributeChangeHandlers =
+      Object.create(p._attributeChangeHandlers || null);
+  }
+
+  p._attributeChangeHandlers[name] = handler;
+};

node_modules/@mixmark-io/domino/config.js

@@ -0,0 +1,7 @@
+/*
+ * This file defines Domino behaviour that can be externally configured.
+ * To change these settings, set the relevant global property *before*
+ * you call `require("domino")`.
+ */
+
+exports.isApiWritable = !globalThis.__domino_frozen__;

node_modules/@mixmark-io/domino/defineElement.js

@@ -0,0 +1,71 @@
+"use strict";
+
+var attributes = require('./attributes');
+var isApiWritable = require("./config").isApiWritable;
+
+module.exports = function(spec, defaultConstructor, tagList, tagNameToImpl) {
+  var c = spec.ctor;
+  if (c) {
+    var props = spec.props || {};
+
+    if (spec.attributes) {
+      for (var n in spec.attributes) {
+        var attr = spec.attributes[n];
+        if (typeof attr !== 'object' || Array.isArray(attr)) attr = {type: attr};
+        if (!attr.name) attr.name = n.toLowerCase();
+        props[n] = attributes.property(attr);
+      }
+    }
+
+    props.constructor = { value : c, writable: isApiWritable };
+    c.prototype = Object.create((spec.superclass || defaultConstructor).prototype, props);
+    if (spec.events) {
+      addEventHandlers(c, spec.events);
+    }
+    tagList[spec.name] = c;
+  }
+  else {
+    c = defaultConstructor;
+  }
+
+  (spec.tags || spec.tag && [spec.tag] || []).forEach(function(tag) {
+    tagNameToImpl[tag] = c;
+  });
+
+  return c;
+};
+
+function EventHandlerBuilder(body, document, form, element) {
+  this.body = body;
+  this.document = document;
+  this.form = form;
+  this.element = element;
+}
+
+EventHandlerBuilder.prototype.build = function () {
+  return () => {};
+};
+
+function EventHandlerChangeHandler(elt, name, oldval, newval) {
+  var doc = elt.ownerDocument || Object.create(null);
+  var form = elt.form || Object.create(null);
+  elt[name] = new EventHandlerBuilder(newval, doc, form, elt).build();
+}
+
+function addEventHandlers(c, eventHandlerTypes) {
+  var p = c.prototype;
+  eventHandlerTypes.forEach(function(type) {
+    // Define the event handler registration IDL attribute for this type
+    Object.defineProperty(p, "on" + type, {
+      get: function() {
+        return this._getEventHandler(type);
+      },
+      set: function(v) {
+        this._setEventHandler(type, v);
+      },
+    });
+
+    // Define special behavior for the content attribute as well
+    attributes.registerChangeHandler(c, "on" + type, EventHandlerChangeHandler);
+  });
+}

node_modules/@mixmark-io/domino/events.js

@@ -0,0 +1,7 @@
+"use strict";
+module.exports = {
+  Event: require('./Event'),
+  UIEvent: require('./UIEvent'),
+  MouseEvent: require('./MouseEvent'),
+  CustomEvent: require('./CustomEvent')
+};

node_modules/@mixmark-io/domino/impl.js

@@ -0,0 +1,27 @@
+"use strict";
+var utils = require('./utils');
+
+exports = module.exports = {
+  CSSStyleDeclaration: require('./CSSStyleDeclaration'),
+  CharacterData: require('./CharacterData'),
+  Comment: require('./Comment'),
+  DOMException: require('./DOMException'),
+  DOMImplementation: require('./DOMImplementation'),
+  DOMTokenList: require('./DOMTokenList'),
+  Document: require('./Document'),
+  DocumentFragment: require('./DocumentFragment'),
+  DocumentType: require('./DocumentType'),
+  Element: require('./Element'),
+  HTMLParser: require('./HTMLParser'),
+  NamedNodeMap: require('./NamedNodeMap'),
+  Node: require('./Node'),
+  NodeList: require('./NodeList'),
+  NodeFilter: require('./NodeFilter'),
+  ProcessingInstruction: require('./ProcessingInstruction'),
+  Text: require('./Text'),
+  Window: require('./Window')
+};
+
+utils.merge(exports, require('./events'));
+utils.merge(exports, require('./htmlelts').elements);
+utils.merge(exports, require('./svg').elements);

node_modules/@mixmark-io/domino/index.d.ts

@@ -0,0 +1,5 @@
+declare module 'domino' {
+  function createDOMImplementation(): DOMImplementation;
+  function createDocument(html?: string, force?: boolean): Document;
+  function createWindow(html?: string, address?: string): Window;
+}

node_modules/@mixmark-io/domino/index.js

@@ -0,0 +1,80 @@
+"use strict";
+var DOMImplementation = require('./DOMImplementation');
+var HTMLParser = require('./HTMLParser');
+var Window = require('./Window');
+var impl = require('./impl');
+
+exports.createDOMImplementation = function() {
+  return new DOMImplementation(null);
+};
+
+exports.createDocument = function(html, force) {
+  // Previous API couldn't let you pass '' as a document, and that
+  // yields a slightly different document than createHTMLDocument('')
+  // does.  The new `force` parameter lets you pass '' if you want to.
+  if (html || force) {
+    var parser = new HTMLParser();
+    parser.parse(html || '', true);
+    return parser.document();
+  }
+  return new DOMImplementation(null).createHTMLDocument("");
+};
+
+exports.createIncrementalHTMLParser = function() {
+    var parser = new HTMLParser();
+    /** API for incremental parser. */
+    return {
+        /** Provide an additional chunk of text to be parsed. */
+        write: function(s) {
+          if (s.length > 0) {
+            parser.parse(s, false, function() { return true; });
+          }
+        },
+        /**
+         * Signal that we are done providing input text, optionally
+         * providing one last chunk as a parameter.
+         */
+        end: function(s) {
+          parser.parse(s || '', true, function() { return true; });
+        },
+        /**
+         * Performs a chunk of parsing work, returning at the end of
+         * the next token as soon as shouldPauseFunc() returns true.
+         * Returns true iff there is more work to do.
+         *
+         * For example:
+         * ```
+         *  var incrParser = domino.createIncrementalHTMLParser();
+         *  incrParser.end('...long html document...');
+         *  while (true) {
+         *    // Pause every 10ms
+         *    var start = Date.now();
+         *    var pauseIn10 = function() { return (Date.now() - start) >= 10; };
+         *    if (!incrParser.process(pauseIn10)) {
+         *      break;
+         *    }
+         *    ...yield to other tasks, do other housekeeping, etc...
+         *  }
+         * ```
+         */
+        process: function(shouldPauseFunc) {
+          return parser.parse('', false, shouldPauseFunc);
+        },
+        /**
+         * Returns the result of the incremental parse.  Valid after
+         * `this.end()` has been called and `this.process()` has returned
+         * false.
+         */
+        document: function() {
+          return parser.document();
+        },
+    };  
+};
+
+exports.createWindow = function(html, address) {
+  var document = exports.createDocument(html);
+  if (address !== undefined) { document._address = address; }
+  return new impl.Window(document);
+};
+
+exports.impl = impl;

node_modules/@mixmark-io/domino/select.js

@@ -0,0 +1,933 @@
+"use strict";
+/* jshint eqnull: true */
+/**
+ * Zest (https://github.com/chjj/zest)
+ * A css selector engine.
+ * Copyright (c) 2011-2012, Christopher Jeffrey. (MIT Licensed)
+ * Domino version based on Zest v0.1.3 with bugfixes applied.
+ */
+
+/**
+ * Helpers
+ */
+
+var window = Object.create(null, {
+  location: { get: function() {
+    throw new Error('window.location is not supported.');
+  } }
+});
+
+var compareDocumentPosition = function(a, b) {
+      return a.compareDocumentPosition(b);
+};
+
+var order = function(a, b) {
+  /* jshint bitwise: false */
+  return compareDocumentPosition(a, b) & 2 ? 1 : -1;
+};
+
+var next = function(el) {
+  while ((el = el.nextSibling)
+         && el.nodeType !== 1);
+  return el;
+};
+
+var prev = function(el) {
+  while ((el = el.previousSibling)
+         && el.nodeType !== 1);
+  return el;
+};
+
+var child = function(el) {
+  /*jshint -W084 */
+  if (el = el.firstChild) {
+    while (el.nodeType !== 1
+           && (el = el.nextSibling));
+  }
+  return el;
+};
+
+var lastChild = function(el) {
+  /*jshint -W084 */
+  if (el = el.lastChild) {
+    while (el.nodeType !== 1
+           && (el = el.previousSibling));
+  }
+  return el;
+};
+
+var parentIsElement = function(n) {
+  if (!n.parentNode) { return false; }
+  var nodeType = n.parentNode.nodeType;
+  // The root `html` element can be a first- or last-child, too.
+  return nodeType === 1 || nodeType === 9;
+};
+
+var unquote = function(str) {
+  if (!str) return str;
+  var ch = str[0];
+  if (ch === '"' || ch === '\'') {
+    if (str[str.length-1] === ch) {
+      str = str.slice(1, -1);
+    } else {
+      // bad string.
+      str = str.slice(1);
+    }
+    return str.replace(rules.str_escape, function(s) {
+      var m = /^\\(?:([0-9A-Fa-f]+)|([\r\n\f]+))/.exec(s);
+      if (!m) { return s.slice(1); }
+      if (m[2]) { return ''; /* escaped newlines are ignored in strings. */ }
+      var cp = parseInt(m[1], 16);
+      return String.fromCodePoint ? String.fromCodePoint(cp) :
+        // Not all JavaScript implementations have String.fromCodePoint yet.
+        String.fromCharCode(cp);
+    });
+  } else if (rules.ident.test(str)) {
+    return decodeid(str);
+  } else {
+    // NUMBER, PERCENTAGE, DIMENSION, etc
+    return str;
+  }
+};
+
+var decodeid = function(str) {
+  return str.replace(rules.escape, function(s) {
+    var m = /^\\([0-9A-Fa-f]+)/.exec(s);
+    if (!m) { return s[1]; }
+    var cp = parseInt(m[1], 16);
+    return String.fromCodePoint ? String.fromCodePoint(cp) :
+      // Not all JavaScript implementations have String.fromCodePoint yet.
+      String.fromCharCode(cp);
+  });
+};
+
+var indexOf = (function() {
+  if (Array.prototype.indexOf) {
+    return Array.prototype.indexOf;
+  }
+  return function(obj, item) {
+    var i = this.length;
+    while (i--) {
+      if (this[i] === item) return i;
+    }
+    return -1;
+  };
+})();
+
+var makeInside = function(start, end) {
+  var regex = rules.inside.source
+    .replace(/</g, start)
+    .replace(/>/g, end);
+
+  return new RegExp(regex);
+};
+
+var replace = function(regex, name, val) {
+  regex = regex.source;
+  regex = regex.replace(name, val.source || val);
+  return new RegExp(regex);
+};
+
+var truncateUrl = function(url, num) {
+  return url
+    .replace(/^(?:\w+:\/\/|\/+)/, '')
+    .replace(/(?:\/+|\/*#.*?)$/, '')
+    .split('/', num)
+    .join('/');
+};
+
+/**
+ * Handle `nth` Selectors
+ */
+
+var parseNth = function(param_, test) {
+  var param = param_.replace(/\s+/g, '')
+    , cap;
+
+  if (param === 'even') {
+    param = '2n+0';
+  } else if (param === 'odd') {
+    param = '2n+1';
+  } else if (param.indexOf('n') === -1) {
+    param = '0n' + param;
+  }
+
+  cap = /^([+-])?(\d+)?n([+-])?(\d+)?$/.exec(param);
+
+  return {
+    group: cap[1] === '-'
+      ? -(cap[2] || 1)
+      : +(cap[2] || 1),
+    offset: cap[4]
+      ? (cap[3] === '-' ? -cap[4] : +cap[4])
+      : 0
+  };
+};
+
+var nth = function(param_, test, last) {
+  var param = parseNth(param_)
+    , group = param.group
+    , offset = param.offset
+    , find = !last ? child : lastChild
+    , advance = !last ? next : prev;
+
+  return function(el) {
+    if (!parentIsElement(el)) return;
+
+    var rel = find(el.parentNode)
+      , pos = 0;
+
+    while (rel) {
+      if (test(rel, el)) pos++;
+      if (rel === el) {
+        pos -= offset;
+        return group && pos
+          ? (pos % group) === 0 && (pos < 0 === group < 0)
+          : !pos;
+      }
+      rel = advance(rel);
+    }
+  };
+};
+
+/**
+ * Simple Selectors
+ */
+
+var selectors = {
+  '*': (function() {
+    if (false/*function() {
+      var el = document.createElement('div');
+      el.appendChild(document.createComment(''));
+      return !!el.getElementsByTagName('*')[0];
+    }()*/) {
+      return function(el) {
+        if (el.nodeType === 1) return true;
+      };
+    }
+    return function() {
+      return true;
+    };
+  })(),
+  'type': function(type) {
+    type = type.toLowerCase();
+    return function(el) {
+      return el.nodeName.toLowerCase() === type;
+    };
+  },
+  'attr': function(key, op, val, i) {
+    op = operators[op];
+    return function(el) {
+      var attr;
+      switch (key) {
+        case 'for':
+          attr = el.htmlFor;
+          break;
+        case 'class':
+          // className is '' when non-existent
+          // getAttribute('class') is null
+          attr = el.className;
+          if (attr === '' && el.getAttribute('class') == null) {
+            attr = null;
+          }
+          break;
+        case 'href':
+        case 'src':
+          attr = el.getAttribute(key, 2);
+          break;
+        case 'title':
+          // getAttribute('title') can be '' when non-existent sometimes?
+          attr = el.getAttribute('title') || null;
+          break;
+        // careful with attributes with special getter functions
+        case 'id':
+        case 'lang':
+        case 'dir':
+        case 'accessKey':
+        case 'hidden':
+        case 'tabIndex':
+        case 'style':
+          if (el.getAttribute) {
+            attr = el.getAttribute(key);
+            break;
+          }
+        /* falls through */
+        default:
+          if (el.hasAttribute && !el.hasAttribute(key)) {
+            break;
+          }
+          attr = el[key] != null
+            ? el[key]
+            : el.getAttribute && el.getAttribute(key);
+          break;
+      }
+      if (attr == null) return;
+      attr = attr + '';
+      if (i) {
+        attr = attr.toLowerCase();
+        val = val.toLowerCase();
+      }
+      return op(attr, val);
+    };
+  },
+  ':first-child': function(el) {
+    return !prev(el) && parentIsElement(el);
+  },
+  ':last-child': function(el) {
+    return !next(el) && parentIsElement(el);
+  },
+  ':only-child': function(el) {
+    return !prev(el) && !next(el) && parentIsElement(el);
+  },
+  ':nth-child': function(param, last) {
+    return nth(param, function() {
+      return true;
+    }, last);
+  },
+  ':nth-last-child': function(param) {
+    return selectors[':nth-child'](param, true);
+  },
+  ':root': function(el) {
+    return el.ownerDocument.documentElement === el;
+  },
+  ':empty': function(el) {
+    return !el.firstChild;
+  },
+  ':not': function(sel) {
+    var test = compileGroup(sel);
+    return function(el) {
+      return !test(el);
+    };
+  },
+  ':first-of-type': function(el) {
+    if (!parentIsElement(el)) return;
+    var type = el.nodeName;
+    /*jshint -W084 */
+    while (el = prev(el)) {
+      if (el.nodeName === type) return;
+    }
+    return true;
+  },
+  ':last-of-type': function(el) {
+    if (!parentIsElement(el)) return;
+    var type = el.nodeName;
+    /*jshint -W084 */
+    while (el = next(el)) {
+      if (el.nodeName === type) return;
+    }
+    return true;
+  },
+  ':only-of-type': function(el) {
+    return selectors[':first-of-type'](el)
+        && selectors[':last-of-type'](el);
+  },
+  ':nth-of-type': function(param, last) {
+    return nth(param, function(rel, el) {
+      return rel.nodeName === el.nodeName;
+    }, last);
+  },
+  ':nth-last-of-type': function(param) {
+    return selectors[':nth-of-type'](param, true);
+  },
+  ':checked': function(el) {
+    return !!(el.checked || el.selected);
+  },
+  ':indeterminate': function(el) {
+    return !selectors[':checked'](el);
+  },
+  ':enabled': function(el) {
+    return !el.disabled && el.type !== 'hidden';
+  },
+  ':disabled': function(el) {
+    return !!el.disabled;
+  },
+  ':target': function(el) {
+    return el.id === window.location.hash.substring(1);
+  },
+  ':focus': function(el) {
+    return el === el.ownerDocument.activeElement;
+  },
+  ':is': function(sel) {
+    return compileGroup(sel);
+  },
+  // :matches is an older name for :is; see
+  // https://github.com/w3c/csswg-drafts/issues/3258
+  ':matches': function(sel) {
+    return selectors[':is'](sel);
+  },
+  ':nth-match': function(param, last) {
+    var args = param.split(/\s*,\s*/)
+      , arg = args.shift()
+      , test = compileGroup(args.join(','));
+
+    return nth(arg, test, last);
+  },
+  ':nth-last-match': function(param) {
+    return selectors[':nth-match'](param, true);
+  },
+  ':links-here': function(el) {
+    return el + '' === window.location + '';
+  },
+  ':lang': function(param) {
+    return function(el) {
+      while (el) {
+        if (el.lang) return el.lang.indexOf(param) === 0;
+        el = el.parentNode;
+      }
+    };
+  },
+  ':dir': function(param) {
+    return function(el) {
+      while (el) {
+        if (el.dir) return el.dir === param;
+        el = el.parentNode;
+      }
+    };
+  },
+  ':scope': function(el, con) {
+    var context = con || el.ownerDocument;
+    if (context.nodeType === 9) {
+      return el === context.documentElement;
+    }
+    return el === context;
+  },
+  ':any-link': function(el) {
+    return typeof el.href === 'string';
+  },
+  ':local-link': function(el) {
+    if (el.nodeName) {
+      return el.href && el.host === window.location.host;
+    }
+    var param = +el + 1;
+    return function(el) {
+      if (!el.href) return;
+
+      var url = window.location + ''
+        , href = el + '';
+
+      return truncateUrl(url, param) === truncateUrl(href, param);
+    };
+  },
+  ':default': function(el) {
+    return !!el.defaultSelected;
+  },
+  ':valid': function(el) {
+    return el.willValidate || (el.validity && el.validity.valid);
+  },
+  ':invalid': function(el) {
+    return !selectors[':valid'](el);
+  },
+  ':in-range': function(el) {
+    return el.value > el.min && el.value <= el.max;
+  },
+  ':out-of-range': function(el) {
+    return !selectors[':in-range'](el);
+  },
+  ':required': function(el) {
+    return !!el.required;
+  },
+  ':optional': function(el) {
+    return !el.required;
+  },
+  ':read-only': function(el) {
+    if (el.readOnly) return true;
+
+    var attr = el.getAttribute('contenteditable')
+      , prop = el.contentEditable
+      , name = el.nodeName.toLowerCase();
+
+    name = name !== 'input' && name !== 'textarea';
+
+    return (name || el.disabled) && attr == null && prop !== 'true';
+  },
+  ':read-write': function(el) {
+    return !selectors[':read-only'](el);
+  },
+  ':hover': function() {
+    throw new Error(':hover is not supported.');
+  },
+  ':active': function() {
+    throw new Error(':active is not supported.');
+  },
+  ':link': function() {
+    throw new Error(':link is not supported.');
+  },
+  ':visited': function() {
+    throw new Error(':visited is not supported.');
+  },
+  ':column': function() {
+    throw new Error(':column is not supported.');
+  },
+  ':nth-column': function() {
+    throw new Error(':nth-column is not supported.');
+  },
+  ':nth-last-column': function() {
+    throw new Error(':nth-last-column is not supported.');
+  },
+  ':current': function() {
+    throw new Error(':current is not supported.');
+  },
+  ':past': function() {
+    throw new Error(':past is not supported.');
+  },
+  ':future': function() {
+    throw new Error(':future is not supported.');
+  },
+  // Non-standard, for compatibility purposes.
+  ':contains': function(param) {
+    return function(el) {
+      var text = el.innerText || el.textContent || el.value || '';
+      return text.indexOf(param) !== -1;
+    };
+  },
+  ':has': function(param) {
+    return function(el) {
+      return find(param, el).length > 0;
+    };
+  }
+  // Potentially add more pseudo selectors for
+  // compatibility with sizzle and most other
+  // selector engines (?).
+};
+
+/**
+ * Attribute Operators
+ */
+
+var operators = {
+  '-': function() {
+    return true;
+  },
+  '=': function(attr, val) {
+    return attr === val;
+  },
+  '*=': function(attr, val) {
+    return attr.indexOf(val) !== -1;
+  },
+  '~=': function(attr, val) {
+    var i
+      , s
+      , f
+      , l;
+
+    for (s = 0; true; s = i + 1) {
+      i = attr.indexOf(val, s);
+      if (i === -1) return false;
+      f = attr[i - 1];
+      l = attr[i + val.length];
+      if ((!f || f === ' ') && (!l || l === ' ')) return true;
+    }
+  },
+  '|=': function(attr, val) {
+    var i = attr.indexOf(val)
+      , l;
+
+    if (i !== 0) return;
+    l = attr[i + val.length];
+
+    return l === '-' || !l;
+  },
+  '^=': function(attr, val) {
+    return attr.indexOf(val) === 0;
+  },
+  '$=': function(attr, val) {
+    var i = attr.lastIndexOf(val);
+    return i !== -1 && i + val.length === attr.length;
+  },
+  // non-standard
+  '!=': function(attr, val) {
+    return attr !== val;
+  }
+};
+
+/**
+ * Combinator Logic
+ */
+
+var combinators = {
+  ' ': function(test) {
+    return function(el) {
+      /*jshint -W084 */
+      while (el = el.parentNode) {
+        if (test(el)) return el;
+      }
+    };
+  },
+  '>': function(test) {
+    return function(el) {
+      /*jshint -W084 */
+      if (el = el.parentNode) {
+        return test(el) && el;
+      }
+    };
+  },
+  '+': function(test) {
+    return function(el) {
+      /*jshint -W084 */
+      if (el = prev(el)) {
+        return test(el) && el;
+      }
+    };
+  },
+  '~': function(test) {
+    return function(el) {
+      /*jshint -W084 */
+      while (el = prev(el)) {
+        if (test(el)) return el;
+      }
+    };
+  },
+  'noop': function(test) {
+    return function(el) {
+      return test(el) && el;
+    };
+  },
+  'ref': function(test, name) {
+    var node;
+
+    function ref(el) {
+      var doc = el.ownerDocument
+        , nodes = doc.getElementsByTagName('*')
+        , i = nodes.length;
+
+      while (i--) {
+        node = nodes[i];
+        if (ref.test(el)) {
+          node = null;
+          return true;
+        }
+      }
+
+      node = null;
+    }
+
+    ref.combinator = function(el) {
+      if (!node || !node.getAttribute) return;
+
+      var attr = node.getAttribute(name) || '';
+      if (attr[0] === '#') attr = attr.substring(1);
+
+      if (attr === el.id && test(node)) {
+        return node;
+      }
+    };
+
+    return ref;
+  }
+};
+
+/**
+ * Grammar
+ */
+
+var rules = {
+  escape: /\\(?:[^0-9A-Fa-f\r\n]|[0-9A-Fa-f]{1,6}[\r\n\t ]?)/g,
+  str_escape: /(escape)|\\(\n|\r\n?|\f)/g,
+  nonascii: /[\u00A0-\uFFFF]/,
+  cssid: /(?:(?!-?[0-9])(?:escape|nonascii|[-_a-zA-Z0-9])+)/,
+  qname: /^ *(cssid|\*)/,
+  simple: /^(?:([.#]cssid)|pseudo|attr)/,
+  ref: /^ *\/(cssid)\/ */,
+  combinator: /^(?: +([^ \w*.#\\]) +|( )+|([^ \w*.#\\]))(?! *$)/,
+  attr: /^\[(cssid)(?:([^\w]?=)(inside))?\]/,
+  pseudo: /^(:cssid)(?:\((inside)\))?/,
+  inside: /(?:"(?:\\"|[^"])*"|'(?:\\'|[^'])*'|<[^"'>]*>|\\["'>]|[^"'>])*/,
+  ident: /^(cssid)$/
+};
+
+rules.cssid = replace(rules.cssid, 'nonascii', rules.nonascii);
+rules.cssid = replace(rules.cssid, 'escape', rules.escape);
+rules.qname = replace(rules.qname, 'cssid', rules.cssid);
+rules.simple = replace(rules.simple, 'cssid', rules.cssid);
+rules.ref = replace(rules.ref, 'cssid', rules.cssid);
+rules.attr = replace(rules.attr, 'cssid', rules.cssid);
+rules.pseudo = replace(rules.pseudo, 'cssid', rules.cssid);
+rules.inside = replace(rules.inside, '[^"\'>]*', rules.inside);
+rules.attr = replace(rules.attr, 'inside', makeInside('\\[', '\\]'));
+rules.pseudo = replace(rules.pseudo, 'inside', makeInside('\\(', '\\)'));
+rules.simple = replace(rules.simple, 'pseudo', rules.pseudo);
+rules.simple = replace(rules.simple, 'attr', rules.attr);
+rules.ident = replace(rules.ident, 'cssid', rules.cssid);
+rules.str_escape = replace(rules.str_escape, 'escape', rules.escape);
+
+/**
+ * Compiling
+ */
+
+var compile = function(sel_) {
+  var sel = sel_.replace(/^\s+|\s+$/g, '')
+    , test
+    , filter = []
+    , buff = []
+    , subject
+    , qname
+    , cap
+    , op
+    , ref;
+
+  /*jshint -W084 */
+  while (sel) {
+    if (cap = rules.qname.exec(sel)) {
+      sel = sel.substring(cap[0].length);
+      qname = decodeid(cap[1]);
+      buff.push(tok(qname, true));
+    } else if (cap = rules.simple.exec(sel)) {
+      sel = sel.substring(cap[0].length);
+      qname = '*';
+      buff.push(tok(qname, true));
+      buff.push(tok(cap));
+    } else {
+      throw new SyntaxError('Invalid selector.');
+    }
+
+    while (cap = rules.simple.exec(sel)) {
+      sel = sel.substring(cap[0].length);
+      buff.push(tok(cap));
+    }
+
+    if (sel[0] === '!') {
+      sel = sel.substring(1);
+      subject = makeSubject();
+      subject.qname = qname;
+      buff.push(subject.simple);
+    }
+
+    if (cap = rules.ref.exec(sel)) {
+      sel = sel.substring(cap[0].length);
+      ref = combinators.ref(makeSimple(buff), decodeid(cap[1]));
+      filter.push(ref.combinator);
+      buff = [];
+      continue;
+    }
+
+    if (cap = rules.combinator.exec(sel)) {
+      sel = sel.substring(cap[0].length);
+      op = cap[1] || cap[2] || cap[3];
+      if (op === ',') {
+        filter.push(combinators.noop(makeSimple(buff)));
+        break;
+      }
+    } else {
+      op = 'noop';
+    }
+
+    if (!combinators[op]) { throw new SyntaxError('Bad combinator.'); }
+    filter.push(combinators[op](makeSimple(buff)));
+    buff = [];
+  }
+
+  test = makeTest(filter);
+  test.qname = qname;
+  test.sel = sel;
+
+  if (subject) {
+    subject.lname = test.qname;
+
+    subject.test = test;
+    subject.qname = subject.qname;
+    subject.sel = test.sel;
+    test = subject;
+  }
+
+  if (ref) {
+    ref.test = test;
+    ref.qname = test.qname;
+    ref.sel = test.sel;
+    test = ref;
+  }
+
+  return test;
+};
+
+var tok = function(cap, qname) {
+  // qname
+  if (qname) {
+    return cap === '*'
+      ? selectors['*']
+      : selectors.type(cap);
+  }
+
+  // class/id
+  if (cap[1]) {
+    return cap[1][0] === '.'
+	  // XXX unescape here?  or in attr?
+      ? selectors.attr('class', '~=', decodeid(cap[1].substring(1)), false)
+      : selectors.attr('id', '=', decodeid(cap[1].substring(1)), false);
+  }
+
+  // pseudo-name
+  // inside-pseudo
+  if (cap[2]) {
+    return cap[3]
+      ? selectors[decodeid(cap[2])](unquote(cap[3]))
+      : selectors[decodeid(cap[2])];
+  }
+
+  // attr name
+  // attr op
+  // attr value
+  if (cap[4]) {
+    var value = cap[6];
+    var i = /["'\s]\s*I$/i.test(value);
+    if (i) {
+      value = value.replace(/\s*I$/i, '');
+    }
+    return selectors.attr(decodeid(cap[4]), cap[5] || '-', unquote(value), i);
+  }
+
+  throw new SyntaxError('Unknown Selector.');
+};
+
+var makeSimple = function(func) {
+  var l = func.length
+    , i;
+
+  // Potentially make sure
+  // `el` is truthy.
+  if (l < 2) return func[0];
+
+  return function(el) {
+    if (!el) return;
+    for (i = 0; i < l; i++) {
+      if (!func[i](el)) return;
+    }
+    return true;
+  };
+};
+
+var makeTest = function(func) {
+  if (func.length < 2) {
+    return function(el) {
+      return !!func[0](el);
+    };
+  }
+  return function(el) {
+    var i = func.length;
+    while (i--) {
+      if (!(el = func[i](el))) return;
+    }
+    return true;
+  };
+};
+
+var makeSubject = function() {
+  var target;
+
+  function subject(el) {
+    var node = el.ownerDocument
+      , scope = node.getElementsByTagName(subject.lname)
+      , i = scope.length;
+
+    while (i--) {
+      if (subject.test(scope[i]) && target === el) {
+        target = null;
+        return true;
+      }
+    }
+
+    target = null;
+  }
+
+  subject.simple = function(el) {
+    target = el;
+    return true;
+  };
+
+  return subject;
+};
+
+var compileGroup = function(sel) {
+  var test = compile(sel)
+    , tests = [ test ];
+
+  while (test.sel) {
+    test = compile(test.sel);
+    tests.push(test);
+  }
+
+  if (tests.length < 2) return test;
+
+  return function(el) {
+    var l = tests.length
+      , i = 0;
+
+    for (; i < l; i++) {
+      if (tests[i](el)) return true;
+    }
+  };
+};
+
+/**
+ * Selection
+ */
+
+var find = function(sel, node) {
+  var results = []
+    , test = compile(sel)
+    , scope = node.getElementsByTagName(test.qname)
+    , i = 0
+    , el;
+
+  /*jshint -W084 */
+  while (el = scope[i++]) {
+    if (test(el)) results.push(el);
+  }
+
+  if (test.sel) {
+    while (test.sel) {
+      test = compile(test.sel);
+      scope = node.getElementsByTagName(test.qname);
+      i = 0;
+      /*jshint -W084 */
+      while (el = scope[i++]) {
+        if (test(el) && indexOf.call(results, el) === -1) {
+          results.push(el);
+        }
+      }
+    }
+    results.sort(order);
+  }
+
+  return results;
+};
+
+/**
+ * Expose
+ */
+
+module.exports = exports = function(sel, context) {
+  /* when context isn't a DocumentFragment and the selector is simple: */
+  var id, r;
+  if (context.nodeType !== 11 && sel.indexOf(' ') === -1) {
+    if (sel[0] === '#' && context.rooted && /^#[A-Z_][-A-Z0-9_]*$/i.test(sel)) {
+      if (context.doc._hasMultipleElementsWithId) {
+        id = sel.substring(1);
+        if (!context.doc._hasMultipleElementsWithId(id)) {
+          r = context.doc.getElementById(id);
+          return r ? [r] : [];
+        }
+      }
+    }
+    if (sel[0] === '.' && /^\.\w+$/.test(sel)) {
+      return context.getElementsByClassName(sel.substring(1));
+    }
+    if (/^\w+$/.test(sel)) {
+      return context.getElementsByTagName(sel);
+    }
+  }
+  /* do things the hard/slow way */
+  return find(sel, context);
+};
+
+exports.selectors = selectors;
+exports.operators = operators;
+exports.combinators = combinators;
+
+exports.matches = function(el, sel) {
+  var test = { sel: sel };
+  do {
+    test = compile(test.sel);
+    if (test(el)) { return true; }
+  } while (test.sel);
+  return false;
+};

node_modules/@mixmark-io/domino/style_parser.js

@@ -0,0 +1,106 @@
+"use strict";
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+// The below is a compiled copy of https://github.com/angular/angular/blob/92e41e9cb417223d9888a4c23b4c0e73188f87d0/packages/compiler/src/render3/view/style_parser.ts
+
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.hyphenate = exports.parse = void 0;
+/**
+ * Parses string representation of a style and converts it into object literal.
+ *
+ * @param value string representation of style as used in the `style` attribute in HTML.
+ *   Example: `color: red; height: auto`.
+ * @returns An array of style property name and value pairs, e.g. `['color', 'red', 'height',
+ * 'auto']`
+ */
+function parse(value) {
+  // we use a string array here instead of a string map
+  // because a string-map is not guaranteed to retain the
+  // order of the entries whereas a string array can be
+  // constructed in a [key, value, key, value] format.
+  const styles = [];
+  let i = 0;
+  let parenDepth = 0;
+  let quote = 0; /* Char.QuoteNone */
+  let valueStart = 0;
+  let propStart = 0;
+  let currentProp = null;
+  while (i < value.length) {
+    const token = value.charCodeAt(i++);
+    switch (token) {
+      case 40 /* Char.OpenParen */:
+        parenDepth++;
+        break;
+      case 41 /* Char.CloseParen */:
+        parenDepth--;
+        break;
+      case 39 /* Char.QuoteSingle */:
+        // valueStart needs to be there since prop values don't
+        // have quotes in CSS
+        if (quote === 0 /* Char.QuoteNone */) {
+          quote = 39 /* Char.QuoteSingle */;
+        } else if (
+          quote === 39 /* Char.QuoteSingle */ &&
+          value.charCodeAt(i - 1) !== 92 /* Char.BackSlash */
+        ) {
+          quote = 0 /* Char.QuoteNone */;
+        }
+        break;
+      case 34 /* Char.QuoteDouble */:
+        // same logic as above
+        if (quote === 0 /* Char.QuoteNone */) {
+          quote = 34 /* Char.QuoteDouble */;
+        } else if (
+          quote === 34 /* Char.QuoteDouble */ &&
+          value.charCodeAt(i - 1) !== 92 /* Char.BackSlash */
+        ) {
+          quote = 0 /* Char.QuoteNone */;
+        }
+        break;
+      case 58 /* Char.Colon */:
+        if (
+          !currentProp &&
+          parenDepth === 0 &&
+          quote === 0 /* Char.QuoteNone */
+        ) {
+          currentProp = hyphenate(value.substring(propStart, i - 1).trim());
+          valueStart = i;
+        }
+        break;
+      case 59 /* Char.Semicolon */:
+        if (
+          currentProp &&
+          valueStart > 0 &&
+          parenDepth === 0 &&
+          quote === 0 /* Char.QuoteNone */
+        ) {
+          const styleVal = value.substring(valueStart, i - 1).trim();
+          styles.push(currentProp, styleVal);
+          propStart = i;
+          valueStart = 0;
+          currentProp = null;
+        }
+        break;
+    }
+  }
+  if (currentProp && valueStart) {
+    const styleVal = value.slice(valueStart).trim();
+    styles.push(currentProp, styleVal);
+  }
+  return styles;
+}
+exports.parse = parse;
+function hyphenate(value) {
+  return value
+    .replace(/[a-z][A-Z]/g, (v) => {
+      return v.charAt(0) + "-" + v.charAt(1);
+    })
+    .toLowerCase();
+}
+exports.hyphenate = hyphenate;

node_modules/@mixmark-io/domino/svg.js

@@ -0,0 +1,59 @@
+"use strict";
+var Element = require('./Element');
+var defineElement = require('./defineElement');
+var utils = require('./utils');
+var CSSStyleDeclaration = require('./CSSStyleDeclaration');
+
+var svgElements = exports.elements = {};
+var svgNameToImpl = Object.create(null);
+
+exports.createElement = function(doc, localName, prefix) {
+  var impl = svgNameToImpl[localName] || SVGElement;
+  return new impl(doc, localName, prefix);
+};
+
+function define(spec) {
+  return defineElement(spec, SVGElement, svgElements, svgNameToImpl);
+}
+
+var SVGElement = define({
+  superclass: Element,
+  name: 'SVGElement',
+  ctor: function SVGElement(doc, localName, prefix) {
+    Element.call(this, doc, localName, utils.NAMESPACE.SVG, prefix);
+  },
+  props: {
+    style: { get: function() {
+      if (!this._style)
+        this._style = new CSSStyleDeclaration(this);
+      return this._style;
+    }}
+  }
+});
+
+define({
+  name: 'SVGSVGElement',
+  ctor: function SVGSVGElement(doc, localName, prefix) {
+    SVGElement.call(this, doc, localName, prefix);
+  },
+  tag: 'svg',
+  props: {
+    createSVGRect: { value: function () {
+      return exports.createElement(this.ownerDocument, 'rect', null);
+    } }
+  }
+});
+
+define({
+  tags: [
+    'a', 'altGlyph', 'altGlyphDef', 'altGlyphItem', 'animate', 'animateColor', 'animateMotion', 'animateTransform',
+    'circle', 'clipPath', 'color-profile', 'cursor', 'defs', 'desc', 'ellipse', 'feBlend', 'feColorMatrix',
+    'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight',
+    'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode',
+    'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence', 'filter',
+    'font', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignObject', 'g',
+    'glyph', 'glyphRef', 'hkern', 'image', 'line', 'linearGradient', 'marker', 'mask', 'metadata', 'missing-glyph',
+    'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialGradient', 'rect', 'script', 'set', 'stop',  'style',
+    'switch', 'symbol', 'text', 'textPath', 'title', 'tref', 'tspan', 'use', 'view', 'vkern'
+  ]
+});

node_modules/@mixmark-io/domino/utils.js

@@ -0,0 +1,85 @@
+"use strict";
+var DOMException = require('./DOMException');
+var ERR = DOMException;
+var isApiWritable = require("./config").isApiWritable;
+
+exports.NAMESPACE = {
+  HTML: 'http://www.w3.org/1999/xhtml',
+  XML: 'http://www.w3.org/XML/1998/namespace',
+  XMLNS: 'http://www.w3.org/2000/xmlns/',
+  MATHML: 'http://www.w3.org/1998/Math/MathML',
+  SVG: 'http://www.w3.org/2000/svg',
+  XLINK: 'http://www.w3.org/1999/xlink'
+};
+
+//
+// Shortcut functions for throwing errors of various types.
+//
+exports.IndexSizeError = function() { throw new DOMException(ERR.INDEX_SIZE_ERR); };
+exports.HierarchyRequestError = function() { throw new DOMException(ERR.HIERARCHY_REQUEST_ERR); };
+exports.WrongDocumentError = function() { throw new DOMException(ERR.WRONG_DOCUMENT_ERR); };
+exports.InvalidCharacterError = function() { throw new DOMException(ERR.INVALID_CHARACTER_ERR); };
+exports.NoModificationAllowedError = function() { throw new DOMException(ERR.NO_MODIFICATION_ALLOWED_ERR); };
+exports.NotFoundError = function() { throw new DOMException(ERR.NOT_FOUND_ERR); };
+exports.NotSupportedError = function() { throw new DOMException(ERR.NOT_SUPPORTED_ERR); };
+exports.InvalidStateError = function() { throw new DOMException(ERR.INVALID_STATE_ERR); };
+exports.SyntaxError = function() { throw new DOMException(ERR.SYNTAX_ERR); };
+exports.InvalidModificationError = function() { throw new DOMException(ERR.INVALID_MODIFICATION_ERR); };
+exports.NamespaceError = function() { throw new DOMException(ERR.NAMESPACE_ERR); };
+exports.InvalidAccessError = function() { throw new DOMException(ERR.INVALID_ACCESS_ERR); };
+exports.TypeMismatchError = function() { throw new DOMException(ERR.TYPE_MISMATCH_ERR); };
+exports.SecurityError = function() { throw new DOMException(ERR.SECURITY_ERR); };
+exports.NetworkError = function() { throw new DOMException(ERR.NETWORK_ERR); };
+exports.AbortError = function() { throw new DOMException(ERR.ABORT_ERR); };
+exports.UrlMismatchError = function() { throw new DOMException(ERR.URL_MISMATCH_ERR); };
+exports.QuotaExceededError = function() { throw new DOMException(ERR.QUOTA_EXCEEDED_ERR); };
+exports.TimeoutError = function() { throw new DOMException(ERR.TIMEOUT_ERR); };
+exports.InvalidNodeTypeError = function() { throw new DOMException(ERR.INVALID_NODE_TYPE_ERR); };
+exports.DataCloneError = function() { throw new DOMException(ERR.DATA_CLONE_ERR); };
+
+exports.nyi = function() {
+  throw new Error("NotYetImplemented");
+};
+
+exports.shouldOverride = function() {
+  throw new Error("Abstract function; should be overriding in subclass.");
+};
+
+exports.assert = function(expr, msg) {
+  if (!expr) {
+    throw new Error("Assertion failed: " + (msg || "") + "\n" + new Error().stack);
+  }
+};
+
+exports.expose = function(src, c) {
+  for (var n in src) {
+    Object.defineProperty(c.prototype, n, { value: src[n], writable: isApiWritable });
+  }
+};
+
+exports.merge = function(a, b) {
+  for (var n in b) {
+    a[n] = b[n];
+  }
+};
+
+// Compare two nodes based on their document order. This function is intended
+// to be passed to sort(). Assumes that the array being sorted does not
+// contain duplicates.  And that all nodes are connected and comparable.
+// Clever code by ppk via jeresig.
+exports.documentOrder = function(n,m) {
+  /* jshint bitwise: false */
+  return 3 - (n.compareDocumentPosition(m) & 6);
+};
+
+exports.toASCIILowerCase = function(s) {
+  return s.replace(/[A-Z]+/g, function(c) {
+    return c.toLowerCase();
+  });
+};
+
+exports.toASCIIUpperCase = function(s) {
+  return s.replace(/[a-z]+/g, function(c) {
+    return c.toUpperCase();
+  });
+};

node_modules/@mixmark-io/domino/xmlnames.js

@@ -0,0 +1,91 @@
+"use strict";
+// This grammar is from the XML and XML Namespace specs. It specifies whether
+// a string (such as an element or attribute name) is a valid Name or QName.
+//
+// Name           ::= NameStartChar (NameChar)*
+// NameStartChar  ::= ":" | [A-Z] | "_" | [a-z] |
+//                    [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] |
+//                    [#x370-#x37D] | [#x37F-#x1FFF] |
+//                    [#x200C-#x200D] | [#x2070-#x218F] |
+//                    [#x2C00-#x2FEF] | [#x3001-#xD7FF] |
+//                    [#xF900-#xFDCF] | [#xFDF0-#xFFFD] |
+//                    [#x10000-#xEFFFF]
+//
+// NameChar       ::= NameStartChar | "-" | "." | [0-9] |
+//                    #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
+//
+// QName          ::= PrefixedName| UnprefixedName
+// PrefixedName   ::= Prefix ':' LocalPart
+// UnprefixedName ::= LocalPart
+// Prefix         ::= NCName
+// LocalPart      ::= NCName
+// NCName         ::= Name - (Char* ':' Char*)
+//                    # An XML Name, minus the ":"
+//
+
+exports.isValidName = isValidName;
+exports.isValidQName = isValidQName;
+
+// Most names will be ASCII only. Try matching against simple regexps first
+var simplename = /^[_:A-Za-z][-.:\w]+$/;
+var simpleqname = /^([_A-Za-z][-.\w]+|[_A-Za-z][-.\w]+:[_A-Za-z][-.\w]+)$/;
+
+// If the regular expressions above fail, try more complex ones that work
+// for any identifiers using codepoints from the Unicode BMP
+var ncnamestartchars = "_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02ff\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD";
+var ncnamechars = "-._A-Za-z0-9\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02ff\u0300-\u037D\u037F-\u1FFF\u200C\u200D\u203f\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD";
+
+var ncname = "[" + ncnamestartchars + "][" + ncnamechars + "]*";
+var namestartchars = ncnamestartchars + ":";
+var namechars = ncnamechars + ":";
+var name = new RegExp("^[" + namestartchars + "]" + "[" + namechars + "]*$");
+var qname = new RegExp("^(" + ncname + "|" + ncname + ":" + ncname + ")$");
+
+// XML says that these characters are also legal:
+// [#x10000-#xEFFFF].  So if the patterns above fail, and the
+// target string includes surrogates, then try the following
+// patterns that allow surrogates and then run an extra validation
+// step to make sure that the surrogates are in valid pairs and in
+// the right range.  Note that since the characters \uf0000 to \u1f0000
+// are not allowed, it means that the high surrogate can only go up to
+// \uDB7f instead of \uDBFF.
+var hassurrogates = /[\uD800-\uDB7F\uDC00-\uDFFF]/;
+var surrogatechars = /[\uD800-\uDB7F\uDC00-\uDFFF]/g;
+var surrogatepairs = /[\uD800-\uDB7F][\uDC00-\uDFFF]/g;
+
+// Modify the variables above to allow surrogates
+ncnamestartchars += "\uD800-\uDB7F\uDC00-\uDFFF";
+ncnamechars += "\uD800-\uDB7F\uDC00-\uDFFF";
+ncname = "[" + ncnamestartchars + "][" + ncnamechars + "]*";
+namestartchars = ncnamestartchars + ":";
+namechars = ncnamechars + ":";
+
+// Build another set of regexps that include surrogates
+var surrogatename = new RegExp("^[" + namestartchars + "]" + "[" + namechars + "]*$");
+var surrogateqname = new RegExp("^(" + ncname + "|" + ncname + ":" + ncname + ")$");
+
+function isValidName(s) {
+  if (simplename.test(s)) return true; // Plain ASCII
+  if (name.test(s)) return true; // Unicode BMP
+
+  // Maybe the tests above failed because s includes surrogate pairs
+  // Most likely, though, they failed for some more basic syntax problem
+  if (!hassurrogates.test(s)) return false;
+
+  // Is the string a valid name if we allow surrogates?
+  if (!surrogatename.test(s)) return false;
+
+  // Finally, are the surrogates all correctly paired up?
+  var chars = s.match(surrogatechars), pairs = s.match(surrogatepairs);
+  return pairs !== null && 2*pairs.length === chars.length;
+}
+
+function isValidQName(s) {
+  if (simpleqname.test(s)) return true; // Plain ASCII
+  if (qname.test(s)) return true; // Unicode BMP
+
+  if (!hassurrogates.test(s)) return false;
+  if (!surrogateqname.test(s)) return false;
+  var chars = s.match(surrogatechars), pairs = s.match(surrogatepairs);
+  return pairs !== null && 2*pairs.length === chars.length;
+}

node_modules/turndown.js

@@ -0,0 +1,953 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.TurndownService = factory());
+}(this, (function () { 'use strict';
+
+  function extend (destination) {
+    for (var i = 1; i < arguments.length; i++) {
+      var source = arguments[i];
+      for (var key in source) {
+        if (source.hasOwnProperty(key)) destination[key] = source[key];
+      }
+    }
+    return destination
+  }
+
+  function repeat (character, count) {
+    return Array(count + 1).join(character)
+  }
+
+  function trimLeadingNewlines (string) {
+    return string.replace(/^\n*/, '')
+  }
+
+  function trimTrailingNewlines (string) {
+    // avoid match-at-end regexp bottleneck, see #370
+    var indexEnd = string.length;
+    while (indexEnd > 0 && string[indexEnd - 1] === '\n') indexEnd--;
+    return string.substring(0, indexEnd)
+  }
+
+  var blockElements = [
+    'ADDRESS', 'ARTICLE', 'ASIDE', 'AUDIO', 'BLOCKQUOTE', 'BODY', 'CANVAS',
+    'CENTER', 'DD', 'DIR', 'DIV', 'DL', 'DT', 'FIELDSET', 'FIGCAPTION', 'FIGURE',
+    'FOOTER', 'FORM', 'FRAMESET', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6', 'HEADER',
+    'HGROUP', 'HR', 'HTML', 'ISINDEX', 'LI', 'MAIN', 'MENU', 'NAV', 'NOFRAMES',
+    'NOSCRIPT', 'OL', 'OUTPUT', 'P', 'PRE', 'SECTION', 'TABLE', 'TBODY', 'TD',
+    'TFOOT', 'TH', 'THEAD', 'TR', 'UL'
+  ];
+
+  function isBlock (node) {
+    return is(node, blockElements)
+  }
+
+  var voidElements = [
+    'AREA', 'BASE', 'BR', 'COL', 'COMMAND', 'EMBED', 'HR', 'IMG', 'INPUT',
+    'KEYGEN', 'LINK', 'META', 'PARAM', 'SOURCE', 'TRACK', 'WBR'
+  ];
+
+  function isVoid (node) {
+    return is(node, voidElements)
+  }
+
+  function hasVoid (node) {
+    return has(node, voidElements)
+  }
+
+  var meaningfulWhenBlankElements = [
+    'A', 'TABLE', 'THEAD', 'TBODY', 'TFOOT', 'TH', 'TD', 'IFRAME', 'SCRIPT',
+    'AUDIO', 'VIDEO'
+  ];
+
+  function isMeaningfulWhenBlank (node) {
+    return is(node, meaningfulWhenBlankElements)
+  }
+
+  function hasMeaningfulWhenBlank (node) {
+    return has(node, meaningfulWhenBlankElements)
+  }
+
+  function is (node, tagNames) {
+    return tagNames.indexOf(node.nodeName) >= 0
+  }
+
+  function has (node, tagNames) {
+    return (
+      node.getElementsByTagName &&
+      tagNames.some(function (tagName) {
+        return node.getElementsByTagName(tagName).length
+      })
+    )
+  }
+
+  var rules = {};
+
+  rules.paragraph = {
+    filter: 'p',
+
+    replacement: function (content) {
+      return '\n\n' + content + '\n\n'
+    }
+  };
+
+  rules.lineBreak = {
+    filter: 'br',
+
+    replacement: function (content, node, options) {
+      return options.br + '\n'
+    }
+  };
+
+  rules.heading = {
+    filter: ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'],
+
+    replacement: function (content, node, options) {
+      var hLevel = Number(node.nodeName.charAt(1));
+
+      if (options.headingStyle === 'setext' && hLevel < 3) {
+        var underline = repeat((hLevel === 1 ? '=' : '-'), content.length);
+        return (
+          '\n\n' + content + '\n' + underline + '\n\n'
+        )
+      } else {
+        return '\n\n' + repeat('#', hLevel) + ' ' + content + '\n\n'
+      }
+    }
+  };
+
+  rules.blockquote = {
+    filter: 'blockquote',
+
+    replacement: function (content) {
+      content = content.replace(/^\n+|\n+$/g, '');
+      content = content.replace(/^/gm, '> ');
+      return '\n\n' + content + '\n\n'
+    }
+  };
+
+  rules.list = {
+    filter: ['ul', 'ol'],
+
+    replacement: function (content, node) {
+      var parent = node.parentNode;
+      if (parent.nodeName === 'LI' && parent.lastElementChild === node) {
+        return '\n' + content
+      } else {
+        return '\n\n' + content + '\n\n'
+      }
+    }
+  };
+
+  rules.listItem = {
+    filter: 'li',
+
+    replacement: function (content, node, options) {
+      content = content
+        .replace(/^\n+/, '') // remove leading newlines
+        .replace(/\n+$/, '\n') // replace trailing newlines with just a single one
+        .replace(/\n/gm, '\n    '); // indent
+      var prefix = options.bulletListMarker + '   ';
+      var parent = node.parentNode;
+      if (parent.nodeName === 'OL') {
+        var start = parent.getAttribute('start');
+        var index = Array.prototype.indexOf.call(parent.children, node);
+        prefix = (start ? Number(start) + index : index + 1) + '.  ';
+      }
+      return (
+        prefix + content + (node.nextSibling && !/\n$/.test(content) ? '\n' : '')
+      )
+    }
+  };
+
+  rules.indentedCodeBlock = {
+    filter: function (node, options) {
+      return (
+        options.codeBlockStyle === 'indented' &&
+        node.nodeName === 'PRE' &&
+        node.firstChild &&
+        node.firstChild.nodeName === 'CODE'
+      )
+    },
+
+    replacement: function (content, node, options) {
+      return (
+        '\n\n    ' +
+        node.firstChild.textContent.replace(/\n/g, '\n    ') +
+        '\n\n'
+      )
+    }
+  };
+
+  rules.fencedCodeBlock = {
+    filter: function (node, options) {
+      return (
+        options.codeBlockStyle === 'fenced' &&
+        node.nodeName === 'PRE' &&
+        node.firstChild &&
+        node.firstChild.nodeName === 'CODE'
+      )
+    },
+
+    replacement: function (content, node, options) {
+      var className = node.firstChild.getAttribute('class') || '';
+      var language = (className.match(/language-(\S+)/) || [null, ''])[1];
+      var code = node.firstChild.textContent;
+
+      var fenceChar = options.fence.charAt(0);
+      var fenceSize = 3;
+      var fenceInCodeRegex = new RegExp('^' + fenceChar + '{3,}', 'gm');
+
+      var match;
+      while ((match = fenceInCodeRegex.exec(code))) {
+        if (match[0].length >= fenceSize) {
+          fenceSize = match[0].length + 1;
+        }
+      }
+
+      var fence = repeat(fenceChar, fenceSize);
+
+      return (
+        '\n\n' + fence + language + '\n' +
+        code.replace(/\n$/, '') +
+        '\n' + fence + '\n\n'
+      )
+    }
+  };
+
+  rules.horizontalRule = {
+    filter: 'hr',
+
+    replacement: function (content, node, options) {
+      return '\n\n' + options.hr + '\n\n'
+    }
+  };
+
+  rules.inlineLink = {
+    filter: function (node, options) {
+      return (
+        options.linkStyle === 'inlined' &&
+        node.nodeName === 'A' &&
+        node.getAttribute('href')
+      )
+    },
+
+    replacement: function (content, node) {
+      var href = node.getAttribute('href');
+      if (href) href = href.replace(/([()])/g, '\\$1');
+      var title = cleanAttribute(node.getAttribute('title'));
+      if (title) title = ' "' + title.replace(/"/g, '\\"') + '"';
+      return '[' + content + '](' + href + title + ')'
+    }
+  };
+
+  rules.referenceLink = {
+    filter: function (node, options) {
+      return (
+        options.linkStyle === 'referenced' &&
+        node.nodeName === 'A' &&
+        node.getAttribute('href')
+      )
+    },
+
+    replacement: function (content, node, options) {
+      var href = node.getAttribute('href');
+      var title = cleanAttribute(node.getAttribute('title'));
+      if (title) title = ' "' + title + '"';
+      var replacement;
+      var reference;
+
+      switch (options.linkReferenceStyle) {
+        case 'collapsed':
+          replacement = '[' + content + '][]';
+          reference = '[' + content + ']: ' + href + title;
+          break
+        case 'shortcut':
+          replacement = '[' + content + ']';
+          reference = '[' + content + ']: ' + href + title;
+          break
+        default:
+          var id = this.references.length + 1;
+          replacement = '[' + content + '][' + id + ']';
+          reference = '[' + id + ']: ' + href + title;
+      }
+
+      this.references.push(reference);
+      return replacement
+    },
+
+    references: [],
+
+    append: function (options) {
+      var references = '';
+      if (this.references.length) {
+        references = '\n\n' + this.references.join('\n') + '\n\n';
+        this.references = []; // Reset references
+      }
+      return references
+    }
+  };
+
+  rules.emphasis = {
+    filter: ['em', 'i'],
+
+    replacement: function (content, node, options) {
+      if (!content.trim()) return ''
+      return options.emDelimiter + content + options.emDelimiter
+    }
+  };
+
+  rules.strong = {
+    filter: ['strong', 'b'],
+
+    replacement: function (content, node, options) {
+      if (!content.trim()) return ''
+      return options.strongDelimiter + content + options.strongDelimiter
+    }
+  };
+
+  rules.code = {
+    filter: function (node) {
+      var hasSiblings = node.previousSibling || node.nextSibling;
+      var isCodeBlock = node.parentNode.nodeName === 'PRE' && !hasSiblings;
+
+      return node.nodeName === 'CODE' && !isCodeBlock
+    },
+
+    replacement: function (content) {
+      if (!content) return ''
+      content = content.replace(/\r?\n|\r/g, ' ');
+
+      var extraSpace = /^`|^ .*?[^ ].* $|`$/.test(content) ? ' ' : '';
+      var delimiter = '`';
+      var matches = content.match(/`+/gm) || [];
+      while (matches.indexOf(delimiter) !== -1) delimiter = delimiter + '`';
+
+      return delimiter + extraSpace + content + extraSpace + delimiter
+    }
+  };
+
+  rules.image = {
+    filter: 'img',
+
+    replacement: function (content, node) {
+      var alt = cleanAttribute(node.getAttribute('alt'));
+      var src = node.getAttribute('src') || '';
+      var title = cleanAttribute(node.getAttribute('title'));
+      var titlePart = title ? ' "' + title + '"' : '';
+      return src ? '![' + alt + ']' + '(' + src + titlePart + ')' : ''
+    }
+  };
+
+  function cleanAttribute (attribute) {
+    return attribute ? attribute.replace(/(\n+\s*)+/g, '\n') : ''
+  }
+
+  /**
+   * Manages a collection of rules used to convert HTML to Markdown
+   */
+
+  function Rules (options) {
+    this.options = options;
+    this._keep = [];
+    this._remove = [];
+
+    this.blankRule = {
+      replacement: options.blankReplacement
+    };
+
+    this.keepReplacement = options.keepReplacement;
+
+    this.defaultRule = {
+      replacement: options.defaultReplacement
+    };
+
+    this.array = [];
+    for (var key in options.rules) this.array.push(options.rules[key]);
+  }
+
+  Rules.prototype = {
+    add: function (key, rule) {
+      this.array.unshift(rule);
+    },
+
+    keep: function (filter) {
+      this._keep.unshift({
+        filter: filter,
+        replacement: this.keepReplacement
+      });
+    },
+
+    remove: function (filter) {
+      this._remove.unshift({
+        filter: filter,
+        replacement: function () {
+          return ''
+        }
+      });
+    },
+
+    forNode: function (node) {
+      if (node.isBlank) return this.blankRule
+      var rule;
+
+      if ((rule = findRule(this.array, node, this.options))) return rule
+      if ((rule = findRule(this._keep, node, this.options))) return rule
+      if ((rule = findRule(this._remove, node, this.options))) return rule
+
+      return this.defaultRule
+    },
+
+    forEach: function (fn) {
+      for (var i = 0; i < this.array.length; i++) fn(this.array[i], i);
+    }
+  };
+
+  function findRule (rules, node, options) {
+    for (var i = 0; i < rules.length; i++) {
+      var rule = rules[i];
+      if (filterValue(rule, node, options)) return rule
+    }
+    return void 0
+  }
+
+  function filterValue (rule, node, options) {
+    var filter = rule.filter;
+    if (typeof filter === 'string') {
+      if (filter === node.nodeName.toLowerCase()) return true
+    } else if (Array.isArray(filter)) {
+      if (filter.indexOf(node.nodeName.toLowerCase()) > -1) return true
+    } else if (typeof filter === 'function') {
+      if (filter.call(rule, node, options)) return true
+    } else {
+      throw new TypeError('`filter` needs to be a string, array, or function')
+    }
+  }
+
+  /**
+   * The collapseWhitespace function is adapted from collapse-whitespace
+   * by Luc Thevenard.
+   *
+   * The MIT License (MIT)
+   *
+   * Copyright (c) 2014 Luc Thevenard <lucthevenard@gmail.com>
+   *
+   * Permission is hereby granted, free of charge, to any person obtaining a copy
+   * of this software and associated documentation files (the "Software"), to deal
+   * in the Software without restriction, including without limitation the rights
+   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   * copies of the Software, and to permit persons to whom the Software is
+   * furnished to do so, subject to the following conditions:
+   *
+   * The above copyright notice and this permission notice shall be included in
+   * all copies or substantial portions of the Software.
+   *
+   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   * THE SOFTWARE.
+   */
+
+  /**
+   * collapseWhitespace(options) removes extraneous whitespace from an the given element.
+   *
+   * @param {Object} options
+   */
+  function collapseWhitespace (options) {
+    var element = options.element;
+    var isBlock = options.isBlock;
+    var isVoid = options.isVoid;
+    var isPre = options.isPre || function (node) {
+      return node.nodeName === 'PRE'
+    };
+
+    if (!element.firstChild || isPre(element)) return
+
+    var prevText = null;
+    var keepLeadingWs = false;
+
+    var prev = null;
+    var node = next(prev, element, isPre);
+
+    while (node !== element) {
+      if (node.nodeType === 3 || node.nodeType === 4) { // Node.TEXT_NODE or Node.CDATA_SECTION_NODE
+        var text = node.data.replace(/[ \r\n\t]+/g, ' ');
+
+        if ((!prevText || / $/.test(prevText.data)) &&
+            !keepLeadingWs && text[0] === ' ') {
+          text = text.substr(1);
+        }
+
+        // `text` might be empty at this point.
+        if (!text) {
+          node = remove(node);
+          continue
+        }
+
+        node.data = text;
+
+        prevText = node;
+      } else if (node.nodeType === 1) { // Node.ELEMENT_NODE
+        if (isBlock(node) || node.nodeName === 'BR') {
+          if (prevText) {
+            prevText.data = prevText.data.replace(/ $/, '');
+          }
+
+          prevText = null;
+          keepLeadingWs = false;
+        } else if (isVoid(node) || isPre(node)) {
+          // Avoid trimming space around non-block, non-BR void elements and inline PRE.
+          prevText = null;
+          keepLeadingWs = true;
+        } else if (prevText) {
+          // Drop protection if set previously.
+          keepLeadingWs = false;
+        }
+      } else {
+        node = remove(node);
+        continue
+      }
+
+      var nextNode = next(prev, node, isPre);
+      prev = node;
+      node = nextNode;
+    }
+
+    if (prevText) {
+      prevText.data = prevText.data.replace(/ $/, '');
+      if (!prevText.data) {
+        remove(prevText);
+      }
+    }
+  }
+
+  /**
+   * remove(node) removes the given node from the DOM and returns the
+   * next node in the sequence.
+   *
+   * @param {Node} node
+   * @return {Node} node
+   */
+  function remove (node) {
+    var next = node.nextSibling || node.parentNode;
+
+    node.parentNode.removeChild(node);
+
+    return next
+  }
+
+  /**
+   * next(prev, current, isPre) returns the next node in the sequence, given the
+   * current and previous nodes.
+   *
+   * @param {Node} prev
+   * @param {Node} current
+   * @param {Function} isPre
+   * @return {Node}
+   */
+  function next (prev, current, isPre) {
+    if ((prev && prev.parentNode === current) || isPre(current)) {
+      return current.nextSibling || current.parentNode
+    }
+
+    return current.firstChild || current.nextSibling || current.parentNode
+  }
+
+  /*
+   * Set up window for Node.js
+   */
+
+  var root = (typeof window !== 'undefined' ? window : {});
+
+  /*
+   * Parsing HTML strings
+   */
+
+  function canParseHTMLNatively () {
+    var Parser = root.DOMParser;
+    var canParse = false;
+
+    // Adapted from https://gist.github.com/1129031
+    // Firefox/Opera/IE throw errors on unsupported types
+    try {
+      // WebKit returns null on unsupported types
+      if (new Parser().parseFromString('', 'text/html')) {
+        canParse = true;
+      }
+    } catch (e) {}
+
+    return canParse
+  }
+
+  function createHTMLParser () {
+    var Parser = function () {};
+
+    {
+      var domino = require('@mixmark-io/domino');
+      Parser.prototype.parseFromString = function (string) {
+        return domino.createDocument(string)
+      };
+    }
+    return Parser
+  }
+
+  var HTMLParser = canParseHTMLNatively() ? root.DOMParser : createHTMLParser();
+
+  function RootNode (input, options) {
+    var root;
+    if (typeof input === 'string') {
+      var doc = htmlParser().parseFromString(
+        // DOM parsers arrange elements in the <head> and <body>.
+        // Wrapping in a custom element ensures elements are reliably arranged in
+        // a single element.
+        '<x-turndown id="turndown-root">' + input + '</x-turndown>',
+        'text/html'
+      );
+      root = doc.getElementById('turndown-root');
+    } else {
+      root = input.cloneNode(true);
+    }
+    collapseWhitespace({
+      element: root,
+      isBlock: isBlock,
+      isVoid: isVoid,
+      isPre: options.preformattedCode ? isPreOrCode : null
+    });
+
+    return root
+  }
+
+  var _htmlParser;
+  function htmlParser () {
+    _htmlParser = _htmlParser || new HTMLParser();
+    return _htmlParser
+  }
+
+  function isPreOrCode (node) {
+    return node.nodeName === 'PRE' || node.nodeName === 'CODE'
+  }
+
+  function Node (node, options) {
+    node.isBlock = isBlock(node);
+    node.isCode = node.nodeName === 'CODE' || node.parentNode.isCode;
+    node.isBlank = isBlank(node);
+    node.flankingWhitespace = flankingWhitespace(node, options);
+    return node
+  }
+
+  function isBlank (node) {
+    return (
+      !isVoid(node) &&
+      !isMeaningfulWhenBlank(node) &&
+      /^\s*$/i.test(node.textContent) &&
+      !hasVoid(node) &&
+      !hasMeaningfulWhenBlank(node)
+    )
+  }
+
+  function flankingWhitespace (node, options) {
+    if (node.isBlock || (options.preformattedCode && node.isCode)) {
+      return { leading: '', trailing: '' }
+    }
+
+    var edges = edgeWhitespace(node.textContent);
+
+    // abandon leading ASCII WS if left-flanked by ASCII WS
+    if (edges.leadingAscii && isFlankedByWhitespace('left', node, options)) {
+      edges.leading = edges.leadingNonAscii;
+    }
+
+    // abandon trailing ASCII WS if right-flanked by ASCII WS
+    if (edges.trailingAscii && isFlankedByWhitespace('right', node, options)) {
+      edges.trailing = edges.trailingNonAscii;
+    }
+
+    return { leading: edges.leading, trailing: edges.trailing }
+  }
+
+  function edgeWhitespace (string) {
+    var m = string.match(/^(([ \t\r\n]*)(\s*))(?:(?=\S)[\s\S]*\S)?((\s*?)([ \t\r\n]*))$/);
+    return {
+      leading: m[1], // whole string for whitespace-only strings
+      leadingAscii: m[2],
+      leadingNonAscii: m[3],
+      trailing: m[4], // empty for whitespace-only strings
+      trailingNonAscii: m[5],
+      trailingAscii: m[6]
+    }
+  }
+
+  function isFlankedByWhitespace (side, node, options) {
+    var sibling;
+    var regExp;
+    var isFlanked;
+
+    if (side === 'left') {
+      sibling = node.previousSibling;
+      regExp = / $/;
+    } else {
+      sibling = node.nextSibling;
+      regExp = /^ /;
+    }
+
+    if (sibling) {
+      if (sibling.nodeType === 3) {
+        isFlanked = regExp.test(sibling.nodeValue);
+      } else if (options.preformattedCode && sibling.nodeName === 'CODE') {
+        isFlanked = false;
+      } else if (sibling.nodeType === 1 && !isBlock(sibling)) {
+        isFlanked = regExp.test(sibling.textContent);
+      }
+    }
+    return isFlanked
+  }
+
+  var reduce = Array.prototype.reduce;
+  var escapes = [
+    [/\\/g, '\\\\'],
+    [/\*/g, '\\*'],
+    [/^-/g, '\\-'],
+    [/^\+ /g, '\\+ '],
+    [/^(=+)/g, '\\$1'],
+    [/^(#{1,6}) /g, '\\$1 '],
+    [/`/g, '\\`'],
+    [/^~~~/g, '\\~~~'],
+    [/\[/g, '\\['],
+    [/\]/g, '\\]'],
+    [/^>/g, '\\>'],
+    [/_/g, '\\_'],
+    [/^(\d+)\. /g, '$1\\. ']
+  ];
+
+  function TurndownService (options) {
+    if (!(this instanceof TurndownService)) return new TurndownService(options)
+
+    var defaults = {
+      rules: rules,
+      headingStyle: 'setext',
+      hr: '* * *',
+      bulletListMarker: '*',
+      codeBlockStyle: 'indented',
+      fence: '```',
+      emDelimiter: '_',
+      strongDelimiter: '**',
+      linkStyle: 'inlined',
+      linkReferenceStyle: 'full',
+      br: '  ',
+      preformattedCode: false,
+      blankReplacement: function (content, node) {
+        return node.isBlock ? '\n\n' : ''
+      },
+      keepReplacement: function (content, node) {
+        return node.isBlock ? '\n\n' + node.outerHTML + '\n\n' : node.outerHTML
+      },
+      defaultReplacement: function (content, node) {
+        return node.isBlock ? '\n\n' + content + '\n\n' : content
+      }
+    };
+    this.options = extend({}, defaults, options);
+    this.rules = new Rules(this.options);
+  }
+
+  TurndownService.prototype = {
+    /**
+     * The entry point for converting a string or DOM node to Markdown
+     * @public
+     * @param {String|HTMLElement} input The string or DOM node to convert
+     * @returns A Markdown representation of the input
+     * @type String
+     */
+
+    turndown: function (input) {
+      if (!canConvert(input)) {
+        throw new TypeError(
+          input + ' is not a string, or an element/document/fragment node.'
+        )
+      }
+
+      if (input === '') return ''
+
+      var output = process.call(this, new RootNode(input, this.options));
+      return postProcess.call(this, output)
+    },
+
+    /**
+     * Add one or more plugins
+     * @public
+     * @param {Function|Array} plugin The plugin or array of plugins to add
+     * @returns The Turndown instance for chaining
+     * @type Object
+     */
+
+    use: function (plugin) {
+      if (Array.isArray(plugin)) {
+        for (var i = 0; i < plugin.length; i++) this.use(plugin[i]);
+      } else if (typeof plugin === 'function') {
+        plugin(this);
+      } else {
+        throw new TypeError('plugin must be a Function or an Array of Functions')
+      }
+      return this
+    },
+
+    /**
+     * Adds a rule
+     * @public
+     * @param {String} key The unique key of the rule
+     * @param {Object} rule The rule
+     * @returns The Turndown instance for chaining
+     * @type Object
+     */
+
+    addRule: function (key, rule) {
+      this.rules.add(key, rule);
+      return this
+    },
+
+    /**
+     * Keep a node (as HTML) that matches the filter
+     * @public
+     * @param {String|Array|Function} filter The unique key of the rule
+     * @returns The Turndown instance for chaining
+     * @type Object
+     */
+
+    keep: function (filter) {
+      this.rules.keep(filter);
+      return this
+    },
+
+    /**
+     * Remove a node that matches the filter
+     * @public
+     * @param {String|Array|Function} filter The unique key of the rule
+     * @returns The Turndown instance for chaining
+     * @type Object
+     */
+
+    remove: function (filter) {
+      this.rules.remove(filter);
+      return this
+    },
+
+    /**
+     * Escapes Markdown syntax
+     * @public
+     * @param {String} string The string to escape
+     * @returns A string with Markdown syntax escaped
+     * @type String
+     */
+
+    escape: function (string) {
+      return escapes.reduce(function (accumulator, escape) {
+        return accumulator.replace(escape[0], escape[1])
+      }, string)
+    }
+  };
+
+  /**
+   * Reduces a DOM node down to its Markdown string equivalent
+   * @private
+   * @param {HTMLElement} parentNode The node to convert
+   * @returns A Markdown representation of the node
+   * @type String
+   */
+
+  function process (parentNode) {
+    var self = this;
+    return reduce.call(parentNode.childNodes, function (output, node) {
+      node = new Node(node, self.options);
+
+      var replacement = '';
+      if (node.nodeType === 3) {
+        replacement = node.isCode ? node.nodeValue : self.escape(node.nodeValue);
+      } else if (node.nodeType === 1) {
+        replacement = replacementForNode.call(self, node);
+      }
+
+      return join(output, replacement)
+    }, '')
+  }
+
+  /**
+   * Appends strings as each rule requires and trims the output
+   * @private
+   * @param {String} output The conversion output
+   * @returns A trimmed version of the ouput
+   * @type String
+   */
+
+  function postProcess (output) {
+    var self = this;
+    this.rules.forEach(function (rule) {
+      if (typeof rule.append === 'function') {
+        output = join(output, rule.append(self.options));
+      }
+    });
+
+    return output.replace(/^[\t\r\n]+/, '').replace(/[\t\r\n\s]+$/, '')
+  }
+
+  /**
+   * Converts an element node to its Markdown equivalent
+   * @private
+   * @param {HTMLElement} node The node to convert
+   * @returns A Markdown representation of the node
+   * @type String
+   */
+
+  function replacementForNode (node) {
+    var rule = this.rules.forNode(node);
+    var content = process.call(this, node);
+    var whitespace = node.flankingWhitespace;
+    if (whitespace.leading || whitespace.trailing) content = content.trim();
+    return (
+      whitespace.leading +
+      rule.replacement(content, node, this.options) +
+      whitespace.trailing
+    )
+  }
+
+  /**
+   * Joins replacement to the current output with appropriate number of new lines
+   * @private
+   * @param {String} output The current conversion output
+   * @param {String} replacement The string to append to the output
+   * @returns Joined output
+   * @type String
+   */
+
+  function join (output, replacement) {
+    var s1 = trimTrailingNewlines(output);
+    var s2 = trimLeadingNewlines(replacement);
+    var nls = Math.max(output.length - s1.length, replacement.length - s2.length);
+    var separator = '\n\n'.substring(0, nls);
+
+    return s1 + separator + s2
+  }
+
+  /**
+   * Determines whether an input can be converted
+   * @private
+   * @param {String|HTMLElement} input Describe this parameter
+   * @returns Describe what it returns
+   * @type String|Object|Array|Boolean|Number
+   */
+
+  function canConvert (input) {
+    return (
+      input != null && (
+        typeof input === 'string' ||
+        (input.nodeType && (
+          input.nodeType === 1 || input.nodeType === 9 || input.nodeType === 11
+        ))
+      )
+    )
+  }
+
+  return TurndownService;
+
+})));

package.json

@@ -1,6 +1,7 @@
 {
 	"devDependencies": {
 		"axios": "^1.4.0",
-		"jsdom": "^22.0.0"
+		"jsdom": "^22.0.0",
+		"turndown": "^7.2.0"
 	}
 }