LarpixClient/electron/node_modules/plist/dist/plist-parse.js

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.plist = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
(function (Buffer){(function (){
/**
 * Module dependencies.
 */

const { DOMParser } = require("@xmldom/xmldom");

/**
 * Module exports.
 */

exports.parse = parse;

var TEXT_NODE = 3;
var CDATA_NODE = 4;
var COMMENT_NODE = 8;

/**
 * We ignore raw text (usually whitespace), <!-- xml comments -->,
 * and raw CDATA nodes.
 *
 * @param {Element} node
 * @returns {Boolean}
 * @api private
 */

function shouldIgnoreNode(node) {
  return (
    node.nodeType === TEXT_NODE ||
    node.nodeType === COMMENT_NODE ||
    node.nodeType === CDATA_NODE
  );
}

/**
 * Check if the node is empty. Some plist file has such node:
 * <key />
 * this node shoud be ignored.
 *
 * @see https://github.com/TooTallNate/plist.js/issues/66
 * @param {Element} node
 * @returns {Boolean}
 * @api private
 */
function isEmptyNode(node) {
  if (!node.childNodes || node.childNodes.length === 0) {
    return true;
  } else {
    return false;
  }
}

function invariant(test, message) {
  if (!test) {
    throw new Error(message);
  }
}

/**
 * Parses a Plist XML string. Returns an Object.
 *
 * @param {String} xml - the XML String to decode
 * @returns {Mixed} the decoded value from the Plist XML
 * @api public
 */

function parse(xml) {
  var doc = new DOMParser().parseFromString(xml, "text/xml");
  invariant(
    doc.documentElement.nodeName === "plist",
    "malformed document. First element should be <plist>",
  );
  var plist = parsePlistXML(doc.documentElement);

  // the root <plist> node gets interpreted as an Array,
  // so pull out the inner data first
  if (plist.length == 1) plist = plist[0];

  return plist;
}

/**
 * Convert an XML based plist document into a JSON representation.
 *
 * @param {Object} xml_node - current XML node in the plist
 * @returns {Mixed} built up JSON object
 * @api private
 */

function parsePlistXML(node) {
  var i, new_obj, key, val, new_arr, res, counter, type;

  if (!node) return null;

  if (node.nodeName === "plist") {
    new_arr = [];
    if (isEmptyNode(node)) {
      return new_arr;
    }
    for (i = 0; i < node.childNodes.length; i++) {
      if (!shouldIgnoreNode(node.childNodes[i])) {
        new_arr.push(parsePlistXML(node.childNodes[i]));
      }
    }
    return new_arr;
  } else if (node.nodeName === "dict") {
    new_obj = {};
    key = null;
    counter = 0;
    if (isEmptyNode(node)) {
      return new_obj;
    }
    for (i = 0; i < node.childNodes.length; i++) {
      if (shouldIgnoreNode(node.childNodes[i])) continue;
      if (counter % 2 === 0) {
        invariant(
          node.childNodes[i].nodeName === "key",
          "Missing key while parsing <dict/>.",
        );
        key = parsePlistXML(node.childNodes[i]);
      } else {
        invariant(
          node.childNodes[i].nodeName !== "key",
          'Unexpected key "' +
            parsePlistXML(node.childNodes[i]) +
            '" while parsing <dict/>.',
        );
        new_obj[key] = parsePlistXML(node.childNodes[i]);
      }
      counter += 1;
    }
    if (counter % 2 === 1) {
      new_obj[key] = "";
    }

    return new_obj;
  } else if (node.nodeName === "array") {
    new_arr = [];
    if (isEmptyNode(node)) {
      return new_arr;
    }
    for (i = 0; i < node.childNodes.length; i++) {
      if (!shouldIgnoreNode(node.childNodes[i])) {
        res = parsePlistXML(node.childNodes[i]);
        if (null != res) new_arr.push(res);
      }
    }
    return new_arr;
  } else if (node.nodeName === "#text") {
    // TODO: what should we do with text types? (CDATA sections)
  } else if (node.nodeName === "key") {
    if (isEmptyNode(node)) {
      return "";
    }

    invariant(
      node.childNodes[0].nodeValue !== "__proto__",
      "__proto__ keys can lead to prototype pollution. More details on CVE-2022-22912",
    );

    return node.childNodes[0].nodeValue;
  } else if (node.nodeName === "string") {
    res = "";
    if (isEmptyNode(node)) {
      return res;
    }
    for (i = 0; i < node.childNodes.length; i++) {
      var type = node.childNodes[i].nodeType;
      if (type === TEXT_NODE || type === CDATA_NODE) {
        res += node.childNodes[i].nodeValue;
      }
    }
    return res;
  } else if (node.nodeName === "integer") {
    invariant(!isEmptyNode(node), 'Cannot parse "" as integer.');
    return parseInt(node.childNodes[0].nodeValue, 10);
  } else if (node.nodeName === "real") {
    invariant(!isEmptyNode(node), 'Cannot parse "" as real.');
    res = "";
    for (i = 0; i < node.childNodes.length; i++) {
      if (node.childNodes[i].nodeType === TEXT_NODE) {
        res += node.childNodes[i].nodeValue;
      }
    }
    return parseFloat(res);
  } else if (node.nodeName === "data") {
    res = "";
    if (isEmptyNode(node)) {
      return Buffer.from(res, "base64");
    }
    for (i = 0; i < node.childNodes.length; i++) {
      if (node.childNodes[i].nodeType === TEXT_NODE) {
        res += node.childNodes[i].nodeValue.replace(/\s+/g, "");
      }
    }
    return Buffer.from(res, "base64");
  } else if (node.nodeName === "date") {
    invariant(!isEmptyNode(node), 'Cannot parse "" as Date.');
    return new Date(node.childNodes[0].nodeValue);
  } else if (node.nodeName === "null") {
    return null;
  } else if (node.nodeName === "true") {
    return true;
  } else if (node.nodeName === "false") {
    return false;
  } else {
    throw new Error("Invalid PLIST tag " + node.nodeName);
  }
}

}).call(this)}).call(this,require("buffer").Buffer)
},{"@xmldom/xmldom":8,"buffer":11}],2:[function(require,module,exports){
'use strict';

/**
 * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.
 *
 * Works with anything that has a `length` property and index access properties,
 * including NodeList.
 *
 * @param {T[] | { length: number; [number]: T }} list
 * @param {function (item: T, index: number, list:T[]):boolean} predicate
 * @param {Partial<Pick<ArrayConstructor['prototype'], 'find'>>?} ac
 * Allows injecting a custom implementation in tests (`Array.prototype` by default).
 * @returns {T | undefined}
 * @template {unknown} T
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
 * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find
 */
function find(list, predicate, ac) {
	if (ac === undefined) {
		ac = Array.prototype;
	}
	if (list && typeof ac.find === 'function') {
		return ac.find.call(list, predicate);
	}
	for (var i = 0; i < list.length; i++) {
		if (hasOwn(list, i)) {
			var item = list[i];
			if (predicate.call(undefined, item, i, list)) {
				return item;
			}
		}
	}
}

/**
 * "Shallow freezes" an object to render it immutable.
 * Uses `Object.freeze` if available,
 * otherwise the immutability is only in the type.
 *
 * Is used to create "enum like" objects.
 *
 * If `Object.getOwnPropertyDescriptors` is available,
 * a new object with all properties of object but without any prototype is created and returned
 * after freezing it.
 *
 * @param {T} object
 * The object to freeze.
 * @param {Pick<ObjectConstructor, 'create' | 'freeze' | 'getOwnPropertyDescriptors'>} [oc=Object]
 * `Object` by default,
 * allows to inject custom object constructor for tests.
 * @returns {Readonly<T>}
 * @template {Object} T
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
 * @prettierignore
 */
function freeze(object, oc) {
	if (oc === undefined) {
		oc = Object;
	}
	if (oc && typeof oc.getOwnPropertyDescriptors === 'function') {
		object = oc.create(null, oc.getOwnPropertyDescriptors(object));
	}
	return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object;
}

/**
 * Implementation for `Object.hasOwn` but ES5 compatible.
 *
 * @param {any} object
 * @param {string | number} key
 * @returns {boolean}
 */
function hasOwn(object, key) {
	return Object.prototype.hasOwnProperty.call(object, key);
}

/**
 * Since xmldom can not rely on `Object.assign`,
 * it uses/provides a simplified version that is sufficient for its needs.
 *
 * @param {Object} target
 * @param {Object | null | undefined} source
 * @returns {Object}
 * The target with the merged/overridden properties.
 * @throws {TypeError}
 * If target is not an object.
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
 * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign
 */
function assign(target, source) {
	if (target === null || typeof target !== 'object') {
		throw new TypeError('target is not an object');
	}
	for (var key in source) {
		if (hasOwn(source, key)) {
			target[key] = source[key];
		}
	}
	return target;
}

/**
 * A number of attributes are boolean attributes.
 * The presence of a boolean attribute on an element represents the `true` value,
 * and the absence of the attribute represents the `false` value.
 *
 * If the attribute is present, its value must either be the empty string, or a value that is
 * an ASCII case-insensitive match for the attribute's canonical name,
 * with no leading or trailing whitespace.
 *
 * Note: The values `"true"` and `"false"` are not allowed on boolean attributes.
 * To represent a `false` value, the attribute has to be omitted altogether.
 *
 * @see https://html.spec.whatwg.org/#boolean-attributes
 * @see https://html.spec.whatwg.org/#attributes-3
 */
var HTML_BOOLEAN_ATTRIBUTES = freeze({
	allowfullscreen: true,
	async: true,
	autofocus: true,
	autoplay: true,
	checked: true,
	controls: true,
	default: true,
	defer: true,
	disabled: true,
	formnovalidate: true,
	hidden: true,
	ismap: true,
	itemscope: true,
	loop: true,
	multiple: true,
	muted: true,
	nomodule: true,
	novalidate: true,
	open: true,
	playsinline: true,
	readonly: true,
	required: true,
	reversed: true,
	selected: true,
});

/**
 * Check if `name` is matching one of the HTML boolean attribute names.
 * This method doesn't check if such attributes are allowed in the context of the current
 * document/parsing.
 *
 * @param {string} name
 * @returns {boolean}
 * @see {@link HTML_BOOLEAN_ATTRIBUTES}
 * @see https://html.spec.whatwg.org/#boolean-attributes
 * @see https://html.spec.whatwg.org/#attributes-3
 */
function isHTMLBooleanAttribute(name) {
	return hasOwn(HTML_BOOLEAN_ATTRIBUTES, name.toLowerCase());
}

/**
 * Void elements only have a start tag; end tags must not be specified for void elements.
 * These elements should be written as self-closing like this: `<area />`.
 * This should not be confused with optional tags that HTML allows to omit the end tag for
 * (like `li`, `tr` and others), which can have content after them,
 * so they can not be written as self-closing.
 * xmldom does not have any logic for optional end tags cases,
 * and will report them as a warning.
 * Content that would go into the unopened element,
 * will instead be added as a sibling text node.
 *
 * @type {Readonly<{
 * 	area: boolean;
 * 	col: boolean;
 * 	img: boolean;
 * 	wbr: boolean;
 * 	link: boolean;
 * 	hr: boolean;
 * 	source: boolean;
 * 	br: boolean;
 * 	input: boolean;
 * 	param: boolean;
 * 	meta: boolean;
 * 	embed: boolean;
 * 	track: boolean;
 * 	base: boolean;
 * }>}
 * @see https://html.spec.whatwg.org/#void-elements
 * @see https://html.spec.whatwg.org/#optional-tags
 */
var HTML_VOID_ELEMENTS = freeze({
	area: true,
	base: true,
	br: true,
	col: true,
	embed: true,
	hr: true,
	img: true,
	input: true,
	link: true,
	meta: true,
	param: true,
	source: true,
	track: true,
	wbr: true,
});

/**
 * Check if `tagName` is matching one of the HTML void element names.
 * This method doesn't check if such tags are allowed in the context of the current
 * document/parsing.
 *
 * @param {string} tagName
 * @returns {boolean}
 * @see {@link HTML_VOID_ELEMENTS}
 * @see https://html.spec.whatwg.org/#void-elements
 */
function isHTMLVoidElement(tagName) {
	return hasOwn(HTML_VOID_ELEMENTS, tagName.toLowerCase());
}

/**
 * Tag names that are raw text elements according to HTML spec.
 * The value denotes whether they are escapable or not.
 *
 * @see {@link isHTMLEscapableRawTextElement}
 * @see {@link isHTMLRawTextElement}
 * @see https://html.spec.whatwg.org/#raw-text-elements
 * @see https://html.spec.whatwg.org/#escapable-raw-text-elements
 */
var HTML_RAW_TEXT_ELEMENTS = freeze({
	script: false,
	style: false,
	textarea: true,
	title: true,
});

/**
 * Check if `tagName` is matching one of the HTML raw text element names.
 * This method doesn't check if such tags are allowed in the context of the current
 * document/parsing.
 *
 * @param {string} tagName
 * @returns {boolean}
 * @see {@link isHTMLEscapableRawTextElement}
 * @see {@link HTML_RAW_TEXT_ELEMENTS}
 * @see https://html.spec.whatwg.org/#raw-text-elements
 * @see https://html.spec.whatwg.org/#escapable-raw-text-elements
 */
function isHTMLRawTextElement(tagName) {
	var key = tagName.toLowerCase();
	return hasOwn(HTML_RAW_TEXT_ELEMENTS, key) && !HTML_RAW_TEXT_ELEMENTS[key];
}
/**
 * Check if `tagName` is matching one of the HTML escapable raw text element names.
 * This method doesn't check if such tags are allowed in the context of the current
 * document/parsing.
 *
 * @param {string} tagName
 * @returns {boolean}
 * @see {@link isHTMLRawTextElement}
 * @see {@link HTML_RAW_TEXT_ELEMENTS}
 * @see https://html.spec.whatwg.org/#raw-text-elements
 * @see https://html.spec.whatwg.org/#escapable-raw-text-elements
 */
function isHTMLEscapableRawTextElement(tagName) {
	var key = tagName.toLowerCase();
	return hasOwn(HTML_RAW_TEXT_ELEMENTS, key) && HTML_RAW_TEXT_ELEMENTS[key];
}
/**
 * Only returns true if `value` matches MIME_TYPE.HTML, which indicates an HTML document.
 *
 * @param {string} mimeType
 * @returns {mimeType is 'text/html'}
 * @see https://www.iana.org/assignments/media-types/text/html
 * @see https://en.wikipedia.org/wiki/HTML
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString
 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring
 */
function isHTMLMimeType(mimeType) {
	return mimeType === MIME_TYPE.HTML;
}
/**
 * For both the `text/html` and the `application/xhtml+xml` namespace the spec defines that the
 * HTML namespace is provided as the default.
 *
 * @param {string} mimeType
 * @returns {boolean}
 * @see https://dom.spec.whatwg.org/#dom-document-createelement
 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument
 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createhtmldocument
 */
function hasDefaultHTMLNamespace(mimeType) {
	return isHTMLMimeType(mimeType) || mimeType === MIME_TYPE.XML_XHTML_APPLICATION;
}

/**
 * All mime types that are allowed as input to `DOMParser.parseFromString`
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02
 *      MDN
 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype
 *      WHATWG HTML Spec
 * @see {@link DOMParser.prototype.parseFromString}
 */
var MIME_TYPE = freeze({
	/**
	 * `text/html`, the only mime type that triggers treating an XML document as HTML.
	 *
	 * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
	 * @see https://en.wikipedia.org/wiki/HTML Wikipedia
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
	 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring
	 *      WHATWG HTML Spec
	 */
	HTML: 'text/html',

	/**
	 * `application/xml`, the standard mime type for XML documents.
	 *
	 * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType
	 *      registration
	 * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303
	 * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
	 */
	XML_APPLICATION: 'application/xml',

	/**
	 * `text/xml`, an alias for `application/xml`.
	 *
	 * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303
	 * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration
	 * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
	 */
	XML_TEXT: 'text/xml',

	/**
	 * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,
	 * but is parsed as an XML document.
	 *
	 * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType
	 *      registration
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec
	 * @see https://en.wikipedia.org/wiki/XHTML Wikipedia
	 */
	XML_XHTML_APPLICATION: 'application/xhtml+xml',

	/**
	 * `image/svg+xml`,
	 *
	 * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration
	 * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1
	 * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia
	 */
	XML_SVG_IMAGE: 'image/svg+xml',
});
/**
 * @typedef {'application/xhtml+xml' | 'application/xml' | 'image/svg+xml' | 'text/html' | 'text/xml'}
 * MimeType
 */
/**
 * @type {MimeType[]}
 * @private
 * Basically `Object.values`, which is not available in ES5.
 */
var _MIME_TYPES = Object.keys(MIME_TYPE).map(function (key) {
	return MIME_TYPE[key];
});

/**
 * Only returns true if `mimeType` is one of the allowed values for
 * `DOMParser.parseFromString`.
 *
 * @param {string} mimeType
 * @returns {mimeType is 'application/xhtml+xml' | 'application/xml' | 'image/svg+xml' |  'text/html' | 'text/xml'}
 *
 */
function isValidMimeType(mimeType) {
	return _MIME_TYPES.indexOf(mimeType) > -1;
}
/**
 * Namespaces that are used in this code base.
 *
 * @see http://www.w3.org/TR/REC-xml-names
 */
var NAMESPACE = freeze({
	/**
	 * The XHTML namespace.
	 *
	 * @see http://www.w3.org/1999/xhtml
	 */
	HTML: 'http://www.w3.org/1999/xhtml',

	/**
	 * The SVG namespace.
	 *
	 * @see http://www.w3.org/2000/svg
	 */
	SVG: 'http://www.w3.org/2000/svg',

	/**
	 * The `xml:` namespace.
	 *
	 * @see http://www.w3.org/XML/1998/namespace
	 */
	XML: 'http://www.w3.org/XML/1998/namespace',

	/**
	 * The `xmlns:` namespace.
	 *
	 * @see https://www.w3.org/2000/xmlns/
	 */
	XMLNS: 'http://www.w3.org/2000/xmlns/',
});

exports.assign = assign;
exports.find = find;
exports.freeze = freeze;
exports.HTML_BOOLEAN_ATTRIBUTES = HTML_BOOLEAN_ATTRIBUTES;
exports.HTML_RAW_TEXT_ELEMENTS = HTML_RAW_TEXT_ELEMENTS;
exports.HTML_VOID_ELEMENTS = HTML_VOID_ELEMENTS;
exports.hasDefaultHTMLNamespace = hasDefaultHTMLNamespace;
exports.hasOwn = hasOwn;
exports.isHTMLBooleanAttribute = isHTMLBooleanAttribute;
exports.isHTMLRawTextElement = isHTMLRawTextElement;
exports.isHTMLEscapableRawTextElement = isHTMLEscapableRawTextElement;
exports.isHTMLMimeType = isHTMLMimeType;
exports.isHTMLVoidElement = isHTMLVoidElement;
exports.isValidMimeType = isValidMimeType;
exports.MIME_TYPE = MIME_TYPE;
exports.NAMESPACE = NAMESPACE;

},{}],3:[function(require,module,exports){
'use strict';

var conventions = require('./conventions');
var dom = require('./dom');
var errors = require('./errors');
var entities = require('./entities');
var sax = require('./sax');

var DOMImplementation = dom.DOMImplementation;

var hasDefaultHTMLNamespace = conventions.hasDefaultHTMLNamespace;
var isHTMLMimeType = conventions.isHTMLMimeType;
var isValidMimeType = conventions.isValidMimeType;
var MIME_TYPE = conventions.MIME_TYPE;
var NAMESPACE = conventions.NAMESPACE;
var ParseError = errors.ParseError;

var XMLReader = sax.XMLReader;

/**
 * Normalizes line ending according to <https://www.w3.org/TR/xml11/#sec-line-ends>,
 * including some Unicode "newline" characters:
 *
 * > XML parsed entities are often stored in computer files which,
 * > for editing convenience, are organized into lines.
 * > These lines are typically separated by some combination
 * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).
 * >
 * > To simplify the tasks of applications, the XML processor must behave
 * > as if it normalized all line breaks in external parsed entities (including the document entity)
 * > on input, before parsing, by translating the following to a single #xA character:
 * >
 * > 1. the two-character sequence #xD #xA,
 * > 2. the two-character sequence #xD #x85,
 * > 3. the single character #x85,
 * > 4. the single character #x2028,
 * > 5. the single character #x2029,
 * > 6. any #xD character that is not immediately followed by #xA or #x85.
 *
 * @param {string} input
 * @returns {string}
 * @prettierignore
 */
function normalizeLineEndings(input) {
	return input.replace(/\r[\n\u0085]/g, '\n').replace(/[\r\u0085\u2028\u2029]/g, '\n');
}

/**
 * @typedef Locator
 * @property {number} [columnNumber]
 * @property {number} [lineNumber]
 */

/**
 * @typedef DOMParserOptions
 * @property {typeof assign} [assign]
 * The method to use instead of `conventions.assign`, which is used to copy values from
 * `options` before they are used for parsing.
 * @property {typeof DOMHandler} [domHandler]
 * For internal testing: The class for creating an instance for handling events from the SAX
 * parser.
 * *****Warning: By configuring a faulty implementation, the specified behavior can completely
 * be broken.*****.
 * @property {Function} [errorHandler]
 * DEPRECATED! use `onError` instead.
 * @property {function(level:ErrorLevel, message:string, context: DOMHandler):void}
 * [onError]
 * A function invoked for every error that occurs during parsing.
 *
 * If it is not provided, all errors are reported to `console.error`
 * and only `fatalError`s are thrown as a `ParseError`,
 * which prevents any further processing.
 * If the provided method throws, a `ParserError` is thrown,
 * which prevents any further processing.
 *
 * Be aware that many `warning`s are considered an error that prevents further processing in
 * most implementations.
 * @property {boolean} [locator=true]
 * Configures if the nodes created during parsing will have a `lineNumber` and a `columnNumber`
 * attribute describing their location in the XML string.
 * Default is true.
 * @property {(string) => string} [normalizeLineEndings]
 * used to replace line endings before parsing, defaults to exported `normalizeLineEndings`,
 * which normalizes line endings according to <https://www.w3.org/TR/xml11/#sec-line-ends>,
 * including some Unicode "newline" characters.
 * @property {Object} [xmlns]
 * The XML namespaces that should be assumed when parsing.
 * The default namespace can be provided by the key that is the empty string.
 * When the `mimeType` for HTML, XHTML or SVG are passed to `parseFromString`,
 * the default namespace that will be used,
 * will be overridden according to the specification.
 * @see {@link normalizeLineEndings}
 */

/**
 * The DOMParser interface provides the ability to parse XML or HTML source code from a string
 * into a DOM `Document`.
 *
 * ***xmldom is different from the spec in that it allows an `options` parameter,
 * to control the behavior***.
 *
 * @class
 * @param {DOMParserOptions} [options]
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser
 * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization
 */
function DOMParser(options) {
	options = options || {};
	if (options.locator === undefined) {
		options.locator = true;
	}

	/**
	 * The method to use instead of `conventions.assign`, which is used to copy values from
	 * `options`
	 * before they are used for parsing.
	 *
	 * @type {conventions.assign}
	 * @private
	 * @see {@link conventions.assign}
	 * @readonly
	 */
	this.assign = options.assign || conventions.assign;

	/**
	 * For internal testing: The class for creating an instance for handling events from the SAX
	 * parser.
	 * *****Warning: By configuring a faulty implementation, the specified behavior can completely
	 * be broken*****.
	 *
	 * @type {typeof DOMHandler}
	 * @private
	 * @readonly
	 */
	this.domHandler = options.domHandler || DOMHandler;

	/**
	 * A function that is invoked for every error that occurs during parsing.
	 *
	 * If it is not provided, all errors are reported to `console.error`
	 * and only `fatalError`s are thrown as a `ParseError`,
	 * which prevents any further processing.
	 * If the provided method throws, a `ParserError` is thrown,
	 * which prevents any further processing.
	 *
	 * Be aware that many `warning`s are considered an error that prevents further processing in
	 * most implementations.
	 *
	 * @type {function(level:ErrorLevel, message:string, context: DOMHandler):void}
	 * @see {@link onErrorStopParsing}
	 * @see {@link onWarningStopParsing}
	 */
	this.onError = options.onError || options.errorHandler;
	if (options.errorHandler && typeof options.errorHandler !== 'function') {
		throw new TypeError('errorHandler object is no longer supported, switch to onError!');
	} else if (options.errorHandler) {
		options.errorHandler('warning', 'The `errorHandler` option has been deprecated, use `onError` instead!', this);
	}

	/**
	 * used to replace line endings before parsing, defaults to `normalizeLineEndings`
	 *
	 * @type {(string) => string}
	 * @readonly
	 */
	this.normalizeLineEndings = options.normalizeLineEndings || normalizeLineEndings;

	/**
	 * Configures if the nodes created during parsing will have a `lineNumber` and a
	 * `columnNumber`
	 * attribute describing their location in the XML string.
	 * Default is true.
	 *
	 * @type {boolean}
	 * @readonly
	 */
	this.locator = !!options.locator;

	/**
	 * The default namespace can be provided by the key that is the empty string.
	 * When the `mimeType` for HTML, XHTML or SVG are passed to `parseFromString`,
	 * the default namespace that will be used,
	 * will be overridden according to the specification.
	 *
	 * @type {Readonly<Object>}
	 * @readonly
	 */
	this.xmlns = this.assign(Object.create(null), options.xmlns);
}

/**
 * Parses `source` using the options in the way configured by the `DOMParserOptions` of `this`
 * `DOMParser`. If `mimeType` is `text/html` an HTML `Document` is created,
 * otherwise an XML `Document` is created.
 *
 * __It behaves different from the description in the living standard__:
 * - Uses the `options` passed to the `DOMParser` constructor to modify the behavior.
 * - Any unexpected input is reported to `onError` with either a `warning`,
 * `error` or `fatalError` level.
 * - Any `fatalError` throws a `ParseError` which prevents further processing.
 * - Any error thrown by `onError` is converted to a `ParseError` which prevents further
 * processing - If no `Document` was created during parsing it is reported as a `fatalError`.
 * *****Warning: By configuring a faulty DOMHandler implementation,
 * the specified behavior can completely be broken*****.
 *
 * @param {string} source
 * The XML mime type only allows string input!
 * @param {string} [mimeType='application/xml']
 * the mimeType or contentType of the document to be created determines the `type` of document
 * created (XML or HTML)
 * @returns {Document}
 * The `Document` node.
 * @throws {ParseError}
 * for any `fatalError` or anything that is thrown by `onError`
 * @throws {TypeError}
 * for any invalid `mimeType`
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString
 * @see https://html.spec.whatwg.org/#dom-domparser-parsefromstring-dev
 */
DOMParser.prototype.parseFromString = function (source, mimeType) {
	if (!isValidMimeType(mimeType)) {
		throw new TypeError('DOMParser.parseFromString: the provided mimeType "' + mimeType + '" is not valid.');
	}
	var defaultNSMap = this.assign(Object.create(null), this.xmlns);
	var entityMap = entities.XML_ENTITIES;
	var defaultNamespace = defaultNSMap[''] || null;
	if (hasDefaultHTMLNamespace(mimeType)) {
		entityMap = entities.HTML_ENTITIES;
		defaultNamespace = NAMESPACE.HTML;
	} else if (mimeType === MIME_TYPE.XML_SVG_IMAGE) {
		defaultNamespace = NAMESPACE.SVG;
	}
	defaultNSMap[''] = defaultNamespace;
	defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;

	var domBuilder = new this.domHandler({
		mimeType: mimeType,
		defaultNamespace: defaultNamespace,
		onError: this.onError,
	});
	var locator = this.locator ? {} : undefined;
	if (this.locator) {
		domBuilder.setDocumentLocator(locator);
	}

	var sax = new XMLReader();
	sax.errorHandler = domBuilder;
	sax.domBuilder = domBuilder;
	var isXml = !conventions.isHTMLMimeType(mimeType);
	if (isXml && typeof source !== 'string') {
		sax.errorHandler.fatalError('source is not a string');
	}
	sax.parse(this.normalizeLineEndings(String(source)), defaultNSMap, entityMap);
	if (!domBuilder.doc.documentElement) {
		sax.errorHandler.fatalError('missing root element');
	}
	return domBuilder.doc;
};

/**
 * @typedef DOMHandlerOptions
 * @property {string} [mimeType=MIME_TYPE.XML_APPLICATION]
 * @property {string | null} [defaultNamespace=null]
 */
/**
 * The class that is used to handle events from the SAX parser to create the related DOM
 * elements.
 *
 * Some methods are only implemented as an empty function,
 * since they are (at least currently) not relevant for xmldom.
 *
 * @class
 * @param {DOMHandlerOptions} [options]
 * @see http://www.saxproject.org/apidoc/org/xml/sax/ext/DefaultHandler2.html
 */
function DOMHandler(options) {
	var opt = options || {};
	/**
	 * The mime type is used to determine if the DOM handler will create an XML or HTML document.
	 * Only if it is set to `text/html` it will create an HTML document.
	 * It defaults to MIME_TYPE.XML_APPLICATION.
	 *
	 * @type {string}
	 * @see {@link MIME_TYPE}
	 * @readonly
	 */
	this.mimeType = opt.mimeType || MIME_TYPE.XML_APPLICATION;

	/**
	 * The namespace to use to create an XML document.
	 * For the following reasons this is required:
	 * - The SAX API for `startDocument` doesn't offer any way to pass a namespace,
	 * since at that point there is no way for the parser to know what the default namespace from
	 * the document will be.
	 * - When creating using `DOMImplementation.createDocument` it is required to pass a
	 * namespace,
	 * to determine the correct `Document.contentType`, which should match `this.mimeType`.
	 * - When parsing an XML document with the `application/xhtml+xml` mimeType,
	 * the HTML namespace needs to be the default namespace.
	 *
	 * @type {string | null}
	 * @private
	 * @readonly
	 */
	this.defaultNamespace = opt.defaultNamespace || null;

	/**
	 * @type {boolean}
	 * @private
	 */
	this.cdata = false;

	/**
	 * The last `Element` that was created by `startElement`.
	 * `endElement` sets it to the `currentElement.parentNode`.
	 *
	 * Note: The sax parser currently sets it to white space text nodes between tags.
	 *
	 * @type {Element | Node | undefined}
	 * @private
	 */
	this.currentElement = undefined;

	/**
	 * The Document that is created as part of `startDocument`,
	 * and returned by `DOMParser.parseFromString`.
	 *
	 * @type {Document | undefined}
	 * @readonly
	 */
	this.doc = undefined;

	/**
	 * The locator is stored as part of setDocumentLocator.
	 * It is controlled and mutated by the SAX parser to store the current parsing position.
	 * It is used by DOMHandler to set `columnNumber` and `lineNumber`
	 * on the DOM nodes.
	 *
	 * @type {Readonly<Locator> | undefined}
	 * @private
	 * @readonly (the
	 * sax parser currently sometimes set's it)
	 */
	this.locator = undefined;
	/**
	 * @type {function (level:ErrorLevel ,message:string, context:DOMHandler):void}
	 * @readonly
	 */
	this.onError = opt.onError;
}

function position(locator, node) {
	node.lineNumber = locator.lineNumber;
	node.columnNumber = locator.columnNumber;
}

DOMHandler.prototype = {
	/**
	 * Either creates an XML or an HTML document and stores it under `this.doc`.
	 * If it is an XML document, `this.defaultNamespace` is used to create it,
	 * and it will not contain any `childNodes`.
	 * If it is an HTML document, it will be created without any `childNodes`.
	 *
	 * @see http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html
	 */
	startDocument: function () {
		var impl = new DOMImplementation();
		this.doc = isHTMLMimeType(this.mimeType) ? impl.createHTMLDocument(false) : impl.createDocument(this.defaultNamespace, '');
	},
	startElement: function (namespaceURI, localName, qName, attrs) {
		var doc = this.doc;
		var el = doc.createElementNS(namespaceURI, qName || localName);
		var len = attrs.length;
		appendElement(this, el);
		this.currentElement = el;

		this.locator && position(this.locator, el);
		for (var i = 0; i < len; i++) {
			var namespaceURI = attrs.getURI(i);
			var value = attrs.getValue(i);
			var qName = attrs.getQName(i);
			var attr = doc.createAttributeNS(namespaceURI, qName);
			this.locator && position(attrs.getLocator(i), attr);
			attr.value = attr.nodeValue = value;
			el.setAttributeNode(attr);
		}
	},
	endElement: function (namespaceURI, localName, qName) {
		this.currentElement = this.currentElement.parentNode;
	},
	startPrefixMapping: function (prefix, uri) {},
	endPrefixMapping: function (prefix) {},
	processingInstruction: function (target, data) {
		var ins = this.doc.createProcessingInstruction(target, data);
		this.locator && position(this.locator, ins);
		appendElement(this, ins);
	},
	ignorableWhitespace: function (ch, start, length) {},
	characters: function (chars, start, length) {
		chars = _toString.apply(this, arguments);
		//console.log(chars)
		if (chars) {
			if (this.cdata) {
				var charNode = this.doc.createCDATASection(chars);
			} else {
				var charNode = this.doc.createTextNode(chars);
			}
			if (this.currentElement) {
				this.currentElement.appendChild(charNode);
			} else if (/^\s*$/.test(chars)) {
				this.doc.appendChild(charNode);
				//process xml
			}
			this.locator && position(this.locator, charNode);
		}
	},
	skippedEntity: function (name) {},
	endDocument: function () {
		this.doc.normalize();
	},
	/**
	 * Stores the locator to be able to set the `columnNumber` and `lineNumber`
	 * on the created DOM nodes.
	 *
	 * @param {Locator} locator
	 */
	setDocumentLocator: function (locator) {
		if (locator) {
			locator.lineNumber = 0;
		}
		this.locator = locator;
	},
	//LexicalHandler
	comment: function (chars, start, length) {
		chars = _toString.apply(this, arguments);
		var comm = this.doc.createComment(chars);
		this.locator && position(this.locator, comm);
		appendElement(this, comm);
	},

	startCDATA: function () {
		//used in characters() methods
		this.cdata = true;
	},
	endCDATA: function () {
		this.cdata = false;
	},

	startDTD: function (name, publicId, systemId, internalSubset) {
		var impl = this.doc.implementation;
		if (impl && impl.createDocumentType) {
			var dt = impl.createDocumentType(name, publicId, systemId, internalSubset);
			this.locator && position(this.locator, dt);
			appendElement(this, dt);
			this.doc.doctype = dt;
		}
	},
	reportError: function (level, message) {
		if (typeof this.onError === 'function') {
			try {
				this.onError(level, message, this);
			} catch (e) {
				throw new ParseError('Reporting ' + level + ' "' + message + '" caused ' + e, this.locator);
			}
		} else {
			console.error('[xmldom ' + level + ']\t' + message, _locator(this.locator));
		}
	},
	/**
	 * @see http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
	 */
	warning: function (message) {
		this.reportError('warning', message);
	},
	error: function (message) {
		this.reportError('error', message);
	},
	/**
	 * This function reports a fatal error and throws a ParseError.
	 *
	 * @param {string} message
	 * - The message to be used for reporting and throwing the error.
	 * @returns {never}
	 * This function always throws an error and never returns a value.
	 * @throws {ParseError}
	 * Always throws a ParseError with the provided message.
	 */
	fatalError: function (message) {
		this.reportError('fatalError', message);
		throw new ParseError(message, this.locator);
	},
};

function _locator(l) {
	if (l) {
		return '\n@#[line:' + l.lineNumber + ',col:' + l.columnNumber + ']';
	}
}

function _toString(chars, start, length) {
	if (typeof chars == 'string') {
		return chars.substr(start, length);
	} else {
		//java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)")
		if (chars.length >= start + length || start) {
			return new java.lang.String(chars, start, length) + '';
		}
		return chars;
	}
}

/*
 * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html
 * used method of org.xml.sax.ext.LexicalHandler:
 *  #comment(chars, start, length)
 *  #startCDATA()
 *  #endCDATA()
 *  #startDTD(name, publicId, systemId)
 *
 *
 * IGNORED method of org.xml.sax.ext.LexicalHandler:
 *  #endDTD()
 *  #startEntity(name)
 *  #endEntity(name)
 *
 *
 * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html
 * IGNORED method of org.xml.sax.ext.DeclHandler
 * 	#attributeDecl(eName, aName, type, mode, value)
 *  #elementDecl(name, model)
 *  #externalEntityDecl(name, publicId, systemId)
 *  #internalEntityDecl(name, value)
 * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html
 * IGNORED method of org.xml.sax.EntityResolver2
 *  #resolveEntity(String name,String publicId,String baseURI,String systemId)
 *  #resolveEntity(publicId, systemId)
 *  #getExternalSubset(name, baseURI)
 * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html
 * IGNORED method of org.xml.sax.DTDHandler
 *  #notationDecl(name, publicId, systemId) {};
 *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};
 */
'endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl'.replace(
	/\w+/g,
	function (key) {
		DOMHandler.prototype[key] = function () {
			return null;
		};
	}
);

/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */
function appendElement(handler, node) {
	if (!handler.currentElement) {
		handler.doc.appendChild(node);
	} else {
		handler.currentElement.appendChild(node);
	}
}

/**
 * A method that prevents any further parsing when an `error`
 * with level `error` is reported during parsing.
 *
 * @see {@link DOMParserOptions.onError}
 * @see {@link onWarningStopParsing}
 */
function onErrorStopParsing(level) {
	if (level === 'error') throw 'onErrorStopParsing';
}

/**
 * A method that prevents any further parsing when any `error` is reported during parsing.
 *
 * @see {@link DOMParserOptions.onError}
 * @see {@link onErrorStopParsing}
 */
function onWarningStopParsing() {
	throw 'onWarningStopParsing';
}

exports.__DOMHandler = DOMHandler;
exports.DOMParser = DOMParser;
exports.normalizeLineEndings = normalizeLineEndings;
exports.onErrorStopParsing = onErrorStopParsing;
exports.onWarningStopParsing = onWarningStopParsing;

},{"./conventions":2,"./dom":4,"./entities":5,"./errors":6,"./sax":9}],4:[function(require,module,exports){
'use strict';

var conventions = require('./conventions');
var find = conventions.find;
var hasDefaultHTMLNamespace = conventions.hasDefaultHTMLNamespace;
var hasOwn = conventions.hasOwn;
var isHTMLMimeType = conventions.isHTMLMimeType;
var isHTMLRawTextElement = conventions.isHTMLRawTextElement;
var isHTMLVoidElement = conventions.isHTMLVoidElement;
var MIME_TYPE = conventions.MIME_TYPE;
var NAMESPACE = conventions.NAMESPACE;

/**
 * Private DOM Constructor symbol
 *
 * Internal symbol used for construction of all classes whose constructors should be private.
 * Currently used for checks in `Node`, `Document`, `Element`, `Attr`, `CharacterData`, `Text`, `Comment`,
 * `CDATASection`, `DocumentType`, `Notation`, `Entity`, `EntityReference`, `DocumentFragment`, `ProcessingInstruction`
 * so the constructor can't be used from outside the module.
 */
var PDC = Symbol();

var errors = require('./errors');
var DOMException = errors.DOMException;
var DOMExceptionName = errors.DOMExceptionName;

var g = require('./grammar');

/**
 * Checks if the given symbol equals the Private DOM Constructor symbol (PDC)
 * and throws an Illegal constructor exception when the symbols don't match.
 * This ensures that the constructor remains private and can't be used outside this module.
 */
function checkSymbol(symbol) {
	if (symbol !== PDC) {
		throw new TypeError('Illegal constructor');
	}
}

/**
 * A prerequisite for `[].filter`, to drop elements that are empty.
 *
 * @param {string} input
 * The string to be checked.
 * @returns {boolean}
 * Returns `true` if the input string is not empty, `false` otherwise.
 */
function notEmptyString(input) {
	return input !== '';
}
/**
 * Splits a string on ASCII whitespace characters (U+0009 TAB, U+000A LF, U+000C FF, U+000D CR,
 * U+0020 SPACE).
 * It follows the definition from the infra specification from WHATWG.
 *
 * @param {string} input
 * The string to be split.
 * @returns {string[]}
 * An array of the split strings. The array can be empty if the input string is empty or only
 * contains whitespace characters.
 * @see {@link https://infra.spec.whatwg.org/#split-on-ascii-whitespace}
 * @see {@link https://infra.spec.whatwg.org/#ascii-whitespace}
 */
function splitOnASCIIWhitespace(input) {
	// U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE
	return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : [];
}

/**
 * Adds element as a key to current if it is not already present.
 *
 * @param {Record<string, boolean | undefined>} current
 * The current record object to which the element will be added as a key.
 * The object's keys are string types and values are either boolean or undefined.
 * @param {string} element
 * The string to be added as a key to the current record.
 * @returns {Record<string, boolean | undefined>}
 * The updated record object after the addition of the new element.
 */
function orderedSetReducer(current, element) {
	if (!hasOwn(current, element)) {
		current[element] = true;
	}
	return current;
}

/**
 * Converts a string into an ordered set by splitting the input on ASCII whitespace and
 * ensuring uniqueness of elements.
 * This follows the definition of an ordered set from the infra specification by WHATWG.
 *
 * @param {string} input
 * The input string to be transformed into an ordered set.
 * @returns {string[]}
 * An array of unique strings obtained from the input, preserving the original order.
 * The array can be empty if the input string is empty or only contains whitespace characters.
 * @see {@link https://infra.spec.whatwg.org/#ordered-set}
 */
function toOrderedSet(input) {
	if (!input) return [];
	var list = splitOnASCIIWhitespace(input);
	return Object.keys(list.reduce(orderedSetReducer, {}));
}

/**
 * Uses `list.indexOf` to implement a function that behaves like `Array.prototype.includes`.
 * This function is used in environments where `Array.prototype.includes` may not be available.
 *
 * @param {any[]} list
 * The array in which to search for the element.
 * @returns {function(any): boolean}
 * A function that accepts an element and returns a boolean indicating whether the element is
 * included in the provided list.
 */
function arrayIncludes(list) {
	return function (element) {
		return list && list.indexOf(element) !== -1;
	};
}

/**
 * Validates a qualified name based on the criteria provided in the DOM specification by
 * WHATWG.
 *
 * @param {string} qualifiedName
 * The qualified name to be validated.
 * @throws {DOMException}
 * With code {@link DOMException.INVALID_CHARACTER_ERR} if the qualified name contains an
 * invalid character.
 * @see {@link https://dom.spec.whatwg.org/#validate}
 */
function validateQualifiedName(qualifiedName) {
	if (!g.QName_exact.test(qualifiedName)) {
		throw new DOMException(DOMException.INVALID_CHARACTER_ERR, 'invalid character in qualified name "' + qualifiedName + '"');
	}
}

/**
 * Validates a qualified name and the namespace associated with it,
 * based on the criteria provided in the DOM specification by WHATWG.
 *
 * @param {string | null} namespace
 * The namespace to be validated. It can be a string or null.
 * @param {string} qualifiedName
 * The qualified name to be validated.
 * @returns {[namespace: string | null, prefix: string | null, localName: string]}
 * Returns a tuple with the namespace,
 * prefix and local name of the qualified name.
 * @throws {DOMException}
 * Throws a DOMException if the qualified name or the namespace is not valid.
 * @see {@link https://dom.spec.whatwg.org/#validate-and-extract}
 */
function validateAndExtract(namespace, qualifiedName) {
	validateQualifiedName(qualifiedName);
	namespace = namespace || null;
	/**
	 * @type {string | null}
	 */
	var prefix = null;
	var localName = qualifiedName;
	if (qualifiedName.indexOf(':') >= 0) {
		var splitResult = qualifiedName.split(':');
		prefix = splitResult[0];
		localName = splitResult[1];
	}
	if (prefix !== null && namespace === null) {
		throw new DOMException(DOMException.NAMESPACE_ERR, 'prefix is non-null and namespace is null');
	}
	if (prefix === 'xml' && namespace !== conventions.NAMESPACE.XML) {
		throw new DOMException(DOMException.NAMESPACE_ERR, 'prefix is "xml" and namespace is not the XML namespace');
	}
	if ((prefix === 'xmlns' || qualifiedName === 'xmlns') && namespace !== conventions.NAMESPACE.XMLNS) {
		throw new DOMException(
			DOMException.NAMESPACE_ERR,
			'either qualifiedName or prefix is "xmlns" and namespace is not the XMLNS namespace'
		);
	}
	if (namespace === conventions.NAMESPACE.XMLNS && prefix !== 'xmlns' && qualifiedName !== 'xmlns') {
		throw new DOMException(
			DOMException.NAMESPACE_ERR,
			'namespace is the XMLNS namespace and neither qualifiedName nor prefix is "xmlns"'
		);
	}
	return [namespace, prefix, localName];
}

/**
 * Copies properties from one object to another.
 * It only copies the object's own (not inherited) properties.
 *
 * @param {Object} src
 * The source object from which properties are copied.
 * @param {Object} dest
 * The destination object to which properties are copied.
 */
function copy(src, dest) {
	for (var p in src) {
		if (hasOwn(src, p)) {
			dest[p] = src[p];
		}
	}
}

/**
 * Extends a class with the properties and methods of a super class.
 * It uses a form of prototypal inheritance, and establishes the `constructor` property
 * correctly(?).
 *
 * It is not clear to the current maintainers if this implementation is making sense,
 * since it creates an intermediate prototype function,
 * which all properties of `Super` are copied onto using `_copy`.
 *
 * @param {Object} Class
 * The class that is to be extended.
 * @param {Object} Super
 * The super class from which properties and methods are inherited.
 * @private
 */
function _extends(Class, Super) {
	var pt = Class.prototype;
	if (!(pt instanceof Super)) {
		function t() {}
		t.prototype = Super.prototype;
		t = new t();
		copy(pt, t);
		Class.prototype = pt = t;
	}
	if (pt.constructor != Class) {
		if (typeof Class != 'function') {
			console.error('unknown Class:' + Class);
		}
		pt.constructor = Class;
	}
}

var NodeType = {};
var ELEMENT_NODE = (NodeType.ELEMENT_NODE = 1);
var ATTRIBUTE_NODE = (NodeType.ATTRIBUTE_NODE = 2);
var TEXT_NODE = (NodeType.TEXT_NODE = 3);
var CDATA_SECTION_NODE = (NodeType.CDATA_SECTION_NODE = 4);
var ENTITY_REFERENCE_NODE = (NodeType.ENTITY_REFERENCE_NODE = 5);
var ENTITY_NODE = (NodeType.ENTITY_NODE = 6);
var PROCESSING_INSTRUCTION_NODE = (NodeType.PROCESSING_INSTRUCTION_NODE = 7);
var COMMENT_NODE = (NodeType.COMMENT_NODE = 8);
var DOCUMENT_NODE = (NodeType.DOCUMENT_NODE = 9);
var DOCUMENT_TYPE_NODE = (NodeType.DOCUMENT_TYPE_NODE = 10);
var DOCUMENT_FRAGMENT_NODE = (NodeType.DOCUMENT_FRAGMENT_NODE = 11);
var NOTATION_NODE = (NodeType.NOTATION_NODE = 12);

var DocumentPosition = conventions.freeze({
	DOCUMENT_POSITION_DISCONNECTED: 1,
	DOCUMENT_POSITION_PRECEDING: 2,
	DOCUMENT_POSITION_FOLLOWING: 4,
	DOCUMENT_POSITION_CONTAINS: 8,
	DOCUMENT_POSITION_CONTAINED_BY: 16,
	DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: 32,
});

//helper functions for compareDocumentPosition
/**
 * Finds the common ancestor in two parent chains.
 *
 * @param {Node[]} a
 * The first parent chain.
 * @param {Node[]} b
 * The second parent chain.
 * @returns {Node}
 * The common ancestor node if it exists. If there is no common ancestor, the function will
 * return `null`.
 */
function commonAncestor(a, b) {
	if (b.length < a.length) return commonAncestor(b, a);
	var c = null;
	for (var n in a) {
		if (a[n] !== b[n]) return c;
		c = a[n];
	}
	return c;
}

/**
 * Assigns a unique identifier to a document to ensure consistency while comparing unrelated
 * nodes.
 *
 * @param {Document} doc
 * The document to which a unique identifier is to be assigned.
 * @returns {string}
 * The unique identifier of the document. If the document already had a unique identifier, the
 * function will return the existing one.
 */
function docGUID(doc) {
	if (!doc.guid) doc.guid = Math.random();
	return doc.guid;
}
//-- end of helper functions

/**
 * The NodeList interface provides the abstraction of an ordered collection of nodes,
 * without defining or constraining how this collection is implemented.
 * NodeList objects in the DOM are live.
 * The items in the NodeList are accessible via an integral index, starting from 0.
 * You can also access the items of the NodeList with a `for...of` loop.
 *
 * @class NodeList
 * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177
 * @constructs NodeList
 */
function NodeList() {}
NodeList.prototype = {
	/**
	 * The number of nodes in the list. The range of valid child node indices is 0 to length-1
	 * inclusive.
	 *
	 * @type {number}
	 */
	length: 0,
	/**
	 * Returns the item at `index`. If index is greater than or equal to the number of nodes in
	 * the list, this returns null.
	 *
	 * @param index
	 * Unsigned long Index into the collection.
	 * @returns {Node | null}
	 * The node at position `index` in the NodeList,
	 * or null if that is not a valid index.
	 */
	item: function (index) {
		return index >= 0 && index < this.length ? this[index] : null;
	},
	/**
	 * Returns a string representation of the NodeList.
	 *
	 * Accepts the same `options` object as `XMLSerializer.prototype.serializeToString`
	 * (`requireWellFormed`, `splitCDATASections`, `nodeFilter`). Passing a function is treated as
	 * a legacy `nodeFilter` for backward compatibility.
	 *
	 * @param {Object | function} [options]
	 * @param {boolean} [options.requireWellFormed=false]
	 * @param {boolean} [options.splitCDATASections=true]
	 * @param {function} [options.nodeFilter]
	 * @returns {string}
	 */
	toString: function (options) {
		var opts;
		if (typeof options === 'function') {
			opts = { requireWellFormed: false, splitCDATASections: true, nodeFilter: options };
		} else if (!!options) {
			opts = {
				requireWellFormed: !!options.requireWellFormed,
				splitCDATASections: options.splitCDATASections !== false,
				nodeFilter: options.nodeFilter || null,
			};
		} else {
			opts = { requireWellFormed: false, splitCDATASections: true, nodeFilter: null };
		}
		for (var buf = [], i = 0; i < this.length; i++) {
			serializeToString(this[i], buf, null, opts);
		}
		return buf.join('');
	},
	/**
	 * Filters the NodeList based on a predicate.
	 *
	 * @param {function(Node): boolean} predicate
	 * - A predicate function to filter the NodeList.
	 * @returns {Node[]}
	 * An array of nodes that satisfy the predicate.
	 * @private
	 */
	filter: function (predicate) {
		return Array.prototype.filter.call(this, predicate);
	},
	/**
	 * Returns the first index at which a given node can be found in the NodeList, or -1 if it is
	 * not present.
	 *
	 * @param {Node} item
	 * - The Node item to locate in the NodeList.
	 * @returns {number}
	 * The first index of the node in the NodeList; -1 if not found.
	 * @private
	 */
	indexOf: function (item) {
		return Array.prototype.indexOf.call(this, item);
	},
};
NodeList.prototype[Symbol.iterator] = function () {
	var me = this;
	var index = 0;

	return {
		next: function () {
			if (index < me.length) {
				return {
					value: me[index++],
					done: false,
				};
			} else {
				return {
					done: true,
				};
			}
		},
		return: function () {
			return {
				done: true,
			};
		},
	};
};

/**
 * Represents a live collection of nodes that is automatically updated when its associated
 * document changes.
 *
 * @class LiveNodeList
 * @param {Node} node
 * The associated node.
 * @param {function} refresh
 * The function to refresh the live node list.
 * @augments NodeList
 * @constructs LiveNodeList
 */
function LiveNodeList(node, refresh) {
	this._node = node;
	this._refresh = refresh;
	_updateLiveList(this);
}
/**
 * Updates the live node list.
 *
 * @param {LiveNodeList} list
 * The live node list to update.
 * @private
 */
function _updateLiveList(list) {
	var inc = list._node._inc || list._node.ownerDocument._inc;
	if (list._inc !== inc) {
		var ls = list._refresh(list._node);
		__set__(list, 'length', ls.length);
		if (!list.$$length || ls.length < list.$$length) {
			for (var i = ls.length; i in list; i++) {
				if (hasOwn(list, i)) {
					delete list[i];
				}
			}
		}
		copy(ls, list);
		list._inc = inc;
	}
}
/**
 * Returns the node at position `index` in the LiveNodeList, or null if that is not a valid
 * index.
 *
 * @param {number} i
 * Index into the collection.
 * @returns {Node | null}
 * The node at position `index` in the LiveNodeList, or null if that is not a valid index.
 */
LiveNodeList.prototype.item = function (i) {
	_updateLiveList(this);
	return this[i] || null;
};

_extends(LiveNodeList, NodeList);

/**
 * Objects implementing the NamedNodeMap interface are used to represent collections of nodes
 * that can be accessed by name.
 * Note that NamedNodeMap does not inherit from NodeList;
 * NamedNodeMaps are not maintained in any particular order.
 * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal
 * index,
 * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,
 * and does not imply that the DOM specifies an order to these Nodes.
 * NamedNodeMap objects in the DOM are live.
 * used for attributes or DocumentType entities
 *
 * This implementation only supports property indices, but does not support named properties,
 * as specified in the living standard.
 *
 * @class NamedNodeMap
 * @see https://dom.spec.whatwg.org/#interface-namednodemap
 * @see https://webidl.spec.whatwg.org/#dfn-supported-property-names
 * @constructs NamedNodeMap
 */
function NamedNodeMap() {}
/**
 * Returns the index of a node within the list.
 *
 * @param {Array} list
 * The list of nodes.
 * @param {Node} node
 * The node to find.
 * @returns {number}
 * The index of the node within the list, or -1 if not found.
 * @private
 */
function _findNodeIndex(list, node) {
	var i = 0;
	while (i < list.length) {
		if (list[i] === node) {
			return i;
		}
		i++;
	}
}
/**
 * Adds a new attribute to the list and updates the owner element of the attribute.
 *
 * @param {Element} el
 * The element which will become the owner of the new attribute.
 * @param {NamedNodeMap} list
 * The list to which the new attribute will be added.
 * @param {Attr} newAttr
 * The new attribute to be added.
 * @param {Attr} oldAttr
 * The old attribute to be replaced, or null if no attribute is to be replaced.
 * @returns {void}
 * @private
 */
function _addNamedNode(el, list, newAttr, oldAttr) {
	if (oldAttr) {
		list[_findNodeIndex(list, oldAttr)] = newAttr;
	} else {
		list[list.length] = newAttr;
		list.length++;
	}
	if (el) {
		newAttr.ownerElement = el;
		var doc = el.ownerDocument;
		if (doc) {
			oldAttr && _onRemoveAttribute(doc, el, oldAttr);
			_onAddAttribute(doc, el, newAttr);
		}
	}
}
/**
 * Removes an attribute from the list and updates the owner element of the attribute.
 *
 * @param {Element} el
 * The element which is the current owner of the attribute.
 * @param {NamedNodeMap} list
 * The list from which the attribute will be removed.
 * @param {Attr} attr
 * The attribute to be removed.
 * @returns {void}
 * @private
 */
function _removeNamedNode(el, list, attr) {
	//console.log('remove attr:'+attr)
	var i = _findNodeIndex(list, attr);
	if (i >= 0) {
		var lastIndex = list.length - 1;
		while (i <= lastIndex) {
			list[i] = list[++i];
		}
		list.length = lastIndex;
		if (el) {
			var doc = el.ownerDocument;
			if (doc) {
				_onRemoveAttribute(doc, el, attr);
			}
			attr.ownerElement = null;
		}
	}
}
NamedNodeMap.prototype = {
	length: 0,
	item: NodeList.prototype.item,

	/**
	 * Get an attribute by name. Note: Name is in lower case in case of HTML namespace and
	 * document.
	 *
	 * @param {string} localName
	 * The local name of the attribute.
	 * @returns {Attr | null}
	 * The attribute with the given local name, or null if no such attribute exists.
	 * @see https://dom.spec.whatwg.org/#concept-element-attributes-get-by-name
	 */
	getNamedItem: function (localName) {
		if (this._ownerElement && this._ownerElement._isInHTMLDocumentAndNamespace()) {
			localName = localName.toLowerCase();
		}
		var i = 0;
		while (i < this.length) {
			var attr = this[i];
			if (attr.nodeName === localName) {
				return attr;
			}
			i++;
		}
		return null;
	},

	/**
	 * Set an attribute.
	 *
	 * @param {Attr} attr
	 * The attribute to set.
	 * @returns {Attr | null}
	 * The old attribute with the same local name and namespace URI as the new one, or null if no
	 * such attribute exists.
	 * @throws {DOMException}
	 * With code:
	 * - {@link INUSE_ATTRIBUTE_ERR} - If the attribute is already an attribute of another
	 * element.
	 * @see https://dom.spec.whatwg.org/#concept-element-attributes-set
	 */
	setNamedItem: function (attr) {
		var el = attr.ownerElement;
		if (el && el !== this._ownerElement) {
			throw new DOMException(DOMException.INUSE_ATTRIBUTE_ERR);
		}
		var oldAttr = this.getNamedItemNS(attr.namespaceURI, attr.localName);
		if (oldAttr === attr) {
			return attr;
		}
		_addNamedNode(this._ownerElement, this, attr, oldAttr);
		return oldAttr;
	},

	/**
	 * Set an attribute, replacing an existing attribute with the same local name and namespace
	 * URI if one exists.
	 *
	 * @param {Attr} attr
	 * The attribute to set.
	 * @returns {Attr | null}
	 * The old attribute with the same local name and namespace URI as the new one, or null if no
	 * such attribute exists.
	 * @throws {DOMException}
	 * Throws a DOMException with the name "InUseAttributeError" if the attribute is already an
	 * attribute of another element.
	 * @see https://dom.spec.whatwg.org/#concept-element-attributes-set
	 */
	setNamedItemNS: function (attr) {
		return this.setNamedItem(attr);
	},

	/**
	 * Removes an attribute specified by the local name.
	 *
	 * @param {string} localName
	 * The local name of the attribute to be removed.
	 * @returns {Attr}
	 * The attribute node that was removed.
	 * @throws {DOMException}
	 * With code:
	 * - {@link DOMException.NOT_FOUND_ERR} if no attribute with the given name is found.
	 * @see https://dom.spec.whatwg.org/#dom-namednodemap-removenameditem
	 * @see https://dom.spec.whatwg.org/#concept-element-attributes-remove-by-name
	 */
	removeNamedItem: function (localName) {
		var attr = this.getNamedItem(localName);
		if (!attr) {
			throw new DOMException(DOMException.NOT_FOUND_ERR, localName);
		}
		_removeNamedNode(this._ownerElement, this, attr);
		return attr;
	},

	/**
	 * Removes an attribute specified by the namespace and local name.
	 *
	 * @param {string | null} namespaceURI
	 * The namespace URI of the attribute to be removed.
	 * @param {string} localName
	 * The local name of the attribute to be removed.
	 * @returns {Attr}
	 * The attribute node that was removed.
	 * @throws {DOMException}
	 * With code:
	 * - {@link DOMException.NOT_FOUND_ERR} if no attribute with the given namespace URI and local
	 * name is found.
	 * @see https://dom.spec.whatwg.org/#dom-namednodemap-removenameditemns
	 * @see https://dom.spec.whatwg.org/#concept-element-attributes-remove-by-namespace
	 */
	removeNamedItemNS: function (namespaceURI, localName) {
		var attr = this.getNamedItemNS(namespaceURI, localName);
		if (!attr) {
			throw new DOMException(DOMException.NOT_FOUND_ERR, namespaceURI ? namespaceURI + ' : ' + localName : localName);
		}
		_removeNamedNode(this._ownerElement, this, attr);
		return attr;
	},

	/**
	 * Get an attribute by namespace and local name.
	 *
	 * @param {string | null} namespaceURI
	 * The namespace URI of the attribute.
	 * @param {string} localName
	 * The local name of the attribute.
	 * @returns {Attr | null}
	 * The attribute with the given namespace URI and local name, or null if no such attribute
	 * exists.
	 * @see https://dom.spec.whatwg.org/#concept-element-attributes-get-by-namespace
	 */
	getNamedItemNS: function (namespaceURI, localName) {
		if (!namespaceURI) {
			namespaceURI = null;
		}
		var i = 0;
		while (i < this.length) {
			var node = this[i];
			if (node.localName === localName && node.namespaceURI === namespaceURI) {
				return node;
			}
			i++;
		}
		return null;
	},
};
NamedNodeMap.prototype[Symbol.iterator] = function () {
	var me = this;
	var index = 0;

	return {
		next: function () {
			if (index < me.length) {
				return {
					value: me[index++],
					done: false,
				};
			} else {
				return {
					done: true,
				};
			}
		},
		return: function () {
			return {
				done: true,
			};
		},
	};
};

/**
 * The DOMImplementation interface provides a number of methods for performing operations that
 * are independent of any particular instance of the document object model.
 *
 * The DOMImplementation interface represents an object providing methods which are not
 * dependent on any particular document.
 * Such an object is returned by the `Document.implementation` property.
 *
 * **The individual methods describe the differences compared to the specs**.
 *
 * @class DOMImplementation
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN
 * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core
 *      (Initial)
 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core
 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core
 * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard
 * @constructs DOMImplementation
 */
function DOMImplementation() {}

DOMImplementation.prototype = {
	/**
	 * Test if the DOM implementation implements a specific feature and version, as specified in
	 * {@link https://www.w3.org/TR/DOM-Level-3-Core/core.html#DOMFeatures DOM Features}.
	 *
	 * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given
	 * feature is supported. The different implementations fairly diverged in what kind of
	 * features were reported. The latest version of the spec settled to force this method to
	 * always return true, where the functionality was accurate and in use.
	 *
	 * @deprecated
	 * It is deprecated and modern browsers return true in all cases.
	 * @function DOMImplementation#hasFeature
	 * @param {string} feature
	 * The name of the feature to test.
	 * @param {string} [version]
	 * This is the version number of the feature to test.
	 * @returns {boolean}
	 * Always returns true.
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN
	 * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-5CED94D7 DOM Level 3 Core
	 */
	hasFeature: function (feature, version) {
		return true;
	},
	/**
	 * Creates a DOM Document object of the specified type with its document element. Note that
	 * based on the {@link DocumentType}
	 * given to create the document, the implementation may instantiate specialized
	 * {@link Document} objects that support additional features than the "Core", such as "HTML"
	 * {@link https://www.w3.org/TR/DOM-Level-3-Core/references.html#DOM2HTML DOM Level 2 HTML}.
	 * On the other hand, setting the {@link DocumentType} after the document was created makes
	 * this very unlikely to happen. Alternatively, specialized {@link Document} creation methods,
	 * such as createHTMLDocument
	 * {@link https://www.w3.org/TR/DOM-Level-3-Core/references.html#DOM2HTML DOM Level 2 HTML},
	 * can be used to obtain specific types of {@link Document} objects.
	 *
	 * __It behaves slightly different from the description in the living standard__:
	 * - There is no interface/class `XMLDocument`, it returns a `Document`
	 * instance (with it's `type` set to `'xml'`).
	 * - `encoding`, `mode`, `origin`, `url` fields are currently not declared.
	 *
	 * @function DOMImplementation.createDocument
	 * @param {string | null} namespaceURI
	 * The
	 * {@link https://www.w3.org/TR/DOM-Level-3-Core/glossary.html#dt-namespaceURI namespace URI}
	 * of the document element to create or null.
	 * @param {string | null} qualifiedName
	 * The
	 * {@link https://www.w3.org/TR/DOM-Level-3-Core/glossary.html#dt-qualifiedname qualified name}
	 * of the document element to be created or null.
	 * @param {DocumentType | null} [doctype=null]
	 * The type of document to be created or null. When doctype is not null, its
	 * {@link Node#ownerDocument} attribute is set to the document being created. Default is
	 * `null`
	 * @returns {Document}
	 * A new {@link Document} object with its document element. If the NamespaceURI,
	 * qualifiedName, and doctype are null, the returned {@link Document} is empty with no
	 * document element.
	 * @throws {DOMException}
	 * With code:
	 *
	 * - `INVALID_CHARACTER_ERR`: Raised if the specified qualified name is not an XML name
	 * according to {@link https://www.w3.org/TR/DOM-Level-3-Core/references.html#XML XML 1.0}.
	 * - `NAMESPACE_ERR`: Raised if the qualifiedName is malformed, if the qualifiedName has a
	 * prefix and the namespaceURI is null, or if the qualifiedName is null and the namespaceURI
	 * is different from null, or if the qualifiedName has a prefix that is "xml" and the
	 * namespaceURI is different from "{@link http://www.w3.org/XML/1998/namespace}"
	 * {@link https://www.w3.org/TR/DOM-Level-3-Core/references.html#Namespaces XML Namespaces},
	 * or if the DOM implementation does not support the "XML" feature but a non-null namespace
	 * URI was provided, since namespaces were defined by XML.
	 * - `WRONG_DOCUMENT_ERR`: Raised if doctype has already been used with a different document
	 * or was created from a different implementation.
	 * - `NOT_SUPPORTED_ERR`: May be raised if the implementation does not support the feature
	 * "XML" and the language exposed through the Document does not support XML Namespaces (such
	 * as {@link https://www.w3.org/TR/DOM-Level-3-Core/references.html#HTML40 HTML 4.01}).
	 * @since DOM Level 2.
	 * @see {@link #createHTMLDocument}
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument DOM Living Standard
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Level-2-Core-DOM-createDocument DOM
	 *      Level 3 Core
	 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM
	 *      Level 2 Core (initial)
	 */
	createDocument: function (namespaceURI, qualifiedName, doctype) {
		var contentType = MIME_TYPE.XML_APPLICATION;
		if (namespaceURI === NAMESPACE.HTML) {
			contentType = MIME_TYPE.XML_XHTML_APPLICATION;
		} else if (namespaceURI === NAMESPACE.SVG) {
			contentType = MIME_TYPE.XML_SVG_IMAGE;
		}
		var doc = new Document(PDC, { contentType: contentType });
		doc.implementation = this;
		doc.childNodes = new NodeList();
		doc.doctype = doctype || null;
		if (doctype) {
			doc.appendChild(doctype);
		}
		if (qualifiedName) {
			var root = doc.createElementNS(namespaceURI, qualifiedName);
			doc.appendChild(root);
		}
		return doc;
	},
	/**
	 * Creates an empty DocumentType node. Entity declarations and notations are not made
	 * available. Entity reference expansions and default attribute additions do not occur.
	 *
	 * **This behavior is slightly different from the one in the specs**:
	 * - `encoding`, `mode`, `origin`, `url` fields are currently not declared.
	 * - `publicId` and `systemId` contain the raw data including any possible quotes,
	 *   so they can always be serialized back to the original value
	 * - `internalSubset` contains the raw string between `[` and `]` if present,
	 *   but is not parsed or validated in any form.
	 *
	 * @function DOMImplementation#createDocumentType
	 * @param {string} qualifiedName
	 * The {@link https://www.w3.org/TR/DOM-Level-3-Core/glossary.html#dt-qualifiedname qualified
	 * name} of the document type to be created.
	 * @param {string} [publicId]
	 * The external subset public identifier. Stored verbatim including surrounding quotes.
	 * When serialized with `requireWellFormed: true`, the serializer throws `InvalidStateError`
	 * if the value is non-empty and does not match the XML `PubidLiteral` production
	 * (W3C DOM Parsing §3.2.1.3; XML 1.0 production [12]). Creation-time validation is not
	 * enforced — deferred to a future breaking release.
	 * @param {string} [systemId]
	 * The external subset system identifier. Stored verbatim including surrounding quotes.
	 * When serialized with `requireWellFormed: true`, the serializer throws `InvalidStateError`
	 * if the value is non-empty and does not match the XML `SystemLiteral` production
	 * (W3C DOM Parsing §3.2.1.3; XML 1.0 production [11]). Creation-time validation is not
	 * enforced — deferred to a future breaking release.
	 * @param {string} [internalSubset]
	 * The internal subset or an empty string if it is not present. Stored verbatim.
	 * When serialized with `requireWellFormed: true`, the serializer throws `InvalidStateError`
	 * if the value contains `"]>"`. Creation-time validation is not enforced.
	 * @returns {DocumentType}
	 * A new {@link DocumentType} node with {@link Node#ownerDocument} set to null.
	 * @throws {DOMException}
	 * With code:
	 *
	 * - `INVALID_CHARACTER_ERR`: Raised if the specified qualified name is not an XML name
	 * according to {@link https://www.w3.org/TR/DOM-Level-3-Core/references.html#XML XML 1.0}.
	 * - `NAMESPACE_ERR`: Raised if the qualifiedName is malformed.
	 * - `NOT_SUPPORTED_ERR`: May be raised if the implementation does not support the feature
	 * "XML" and the language exposed through the Document does not support XML Namespaces (such
	 * as {@link https://www.w3.org/TR/DOM-Level-3-Core/references.html#HTML40 HTML 4.01}).
	 * @since DOM Level 2.
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType
	 *      MDN
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living
	 *      Standard
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Level-3-Core-DOM-createDocType DOM
	 *      Level 3 Core
	 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM
	 *      Level 2 Core
	 * @see https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md#050
	 * @see https://www.w3.org/TR/DOM-Level-2-Core/#core-ID-Core-DocType-internalSubset
	 * @prettierignore
	 */
	createDocumentType: function (qualifiedName, publicId, systemId, internalSubset) {
		validateQualifiedName(qualifiedName);
		var node = new DocumentType(PDC);
		node.name = qualifiedName;
		node.nodeName = qualifiedName;
		node.publicId = publicId || '';
		node.systemId = systemId || '';
		node.internalSubset = internalSubset || '';
		node.childNodes = new NodeList();

		return node;
	},
	/**
	 * Returns an HTML document, that might already have a basic DOM structure.
	 *
	 * __It behaves slightly different from the description in the living standard__:
	 * - If the first argument is `false` no initial nodes are added (steps 3-7 in the specs are
	 * omitted)
	 * - `encoding`, `mode`, `origin`, `url` fields are currently not declared.
	 *
	 * @param {string | false} [title]
	 * A string containing the title to give the new HTML document.
	 * @returns {Document}
	 * The HTML document.
	 * @since WHATWG Living Standard.
	 * @see {@link #createDocument}
	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createhtmldocument
	 * @see https://dom.spec.whatwg.org/#html-document
	 */
	createHTMLDocument: function (title) {
		var doc = new Document(PDC, { contentType: MIME_TYPE.HTML });
		doc.implementation = this;
		doc.childNodes = new NodeList();
		if (title !== false) {
			doc.doctype = this.createDocumentType('html');
			doc.doctype.ownerDocument = doc;
			doc.appendChild(doc.doctype);
			var htmlNode = doc.createElement('html');
			doc.appendChild(htmlNode);
			var headNode = doc.createElement('head');
			htmlNode.appendChild(headNode);
			if (typeof title === 'string') {
				var titleNode = doc.createElement('title');
				titleNode.appendChild(doc.createTextNode(title));
				headNode.appendChild(titleNode);
			}
			htmlNode.appendChild(doc.createElement('body'));
		}
		return doc;
	},
};

/**
 * The DOM Node interface is an abstract base class upon which many other DOM API objects are
 * based, thus letting those object types to be used similarly and often interchangeably. As an
 * abstract class, there is no such thing as a plain Node object. All objects that implement
 * Node functionality are based on one of its subclasses. Most notable are Document, Element,
 * and DocumentFragment.
 *
 * In addition, every kind of DOM node is represented by an interface based on Node. These
 * include Attr, CharacterData (which Text, Comment, CDATASection and ProcessingInstruction are
 * all based on), and DocumentType.
 *
 * In some cases, a particular feature of the base Node interface may not apply to one of its
 * child interfaces; in that case, the inheriting node may return null or throw an exception,
 * depending on circumstances. For example, attempting to add children to a node type that
 * cannot have children will throw an exception.
 *
 * **This behavior is slightly different from the in the specs**:
 * - unimplemented interfaces: `EventTarget`
 *
 * @class
 * @abstract
 * @param {Symbol} symbol
 * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247
 * @see https://dom.spec.whatwg.org/#node
 * @prettierignore
 */
function Node(symbol) {
	checkSymbol(symbol);
}

Node.prototype = {
	/**
	 * The first child of this node.
	 *
	 * @type {Node | null}
	 */
	firstChild: null,
	/**
	 * The last child of this node.
	 *
	 * @type {Node | null}
	 */
	lastChild: null,
	/**
	 * The previous sibling of this node.
	 *
	 * @type {Node | null}
	 */
	previousSibling: null,
	/**
	 * The next sibling of this node.
	 *
	 * @type {Node | null}
	 */
	nextSibling: null,
	/**
	 * The parent node of this node.
	 *
	 * @type {Node | null}
	 */
	parentNode: null,
	/**
	 * The parent element of this node.
	 *
	 * @type {Element | null}
	 */
	get parentElement() {
		return this.parentNode && this.parentNode.nodeType === this.ELEMENT_NODE ? this.parentNode : null;
	},
	/**
	 * The child nodes of this node.
	 *
	 * @type {NodeList}
	 */
	childNodes: null,
	/**
	 * The document object associated with this node.
	 *
	 * @type {Document | null}
	 */
	ownerDocument: null,
	/**
	 * The value of this node.
	 *
	 * @type {string | null}
	 */
	nodeValue: null,
	/**
	 * The namespace URI of this node.
	 *
	 * @type {string | null}
	 */
	namespaceURI: null,
	/**
	 * The prefix of the namespace for this node.
	 *
	 * @type {string | null}
	 */
	prefix: null,
	/**
	 * The local part of the qualified name of this node.
	 *
	 * @type {string | null}
	 */
	localName: null,
	/**
	 * The baseURI is currently always `about:blank`,
	 * since that's what happens when you create a document from scratch.
	 *
	 * @type {'about:blank'}
	 */
	baseURI: 'about:blank',
	/**
	 * Is true if this node is part of a document.
	 *
	 * @type {boolean}
	 */
	get isConnected() {
		var rootNode = this.getRootNode();
		return rootNode && rootNode.nodeType === rootNode.DOCUMENT_NODE;
	},
	/**
	 * Checks whether `other` is an inclusive descendant of this node.
	 *
	 * @param {Node | null | undefined} other
	 * The node to check.
	 * @returns {boolean}
	 * True if `other` is an inclusive descendant of this node; false otherwise.
	 * @see https://dom.spec.whatwg.org/#dom-node-contains
	 */
	contains: function (other) {
		if (!other) return false;
		var parent = other;
		do {
			if (this === parent) return true;
			parent = parent.parentNode;
		} while (parent);
		return false;
	},
	/**
	 * @typedef GetRootNodeOptions
	 * @property {boolean} [composed=false]
	 */
	/**
	 * Searches for the root node of this node.
	 *
	 * **This behavior is slightly different from the in the specs**:
	 * - ignores `options.composed`, since `ShadowRoot`s are unsupported, always returns root.
	 *
	 * @param {GetRootNodeOptions} [options]
	 * @returns {Node}
	 * Root node.
	 * @see https://dom.spec.whatwg.org/#dom-node-getrootnode
	 * @see https://dom.spec.whatwg.org/#concept-shadow-including-root
	 */
	getRootNode: function (options) {
		var parent = this;
		do {
			if (!parent.parentNode) {
				return parent;
			}
			parent = parent.parentNode;
		} while (parent);
	},
	/**
	 * Checks whether the given node is equal to this node.
	 *
	 * Two nodes are equal when they have the same type, defining characteristics (for the type),
	 * and the same childNodes. The comparison is iterative to avoid stack overflows on
	 * deeply-nested trees. Attribute nodes of each Element pair are also pushed onto the stack
	 * and compared the same way.
	 *
	 * @param {Node} [otherNode]
	 * @returns {boolean}
	 * @see https://dom.spec.whatwg.org/#concept-node-equals
	 * @see ../docs/walk-dom.md.
	 */
	isEqualNode: function (otherNode) {
		if (!otherNode) return false;

		// Use an explicit {node, other} pair stack to avoid call-stack overflow on deep trees.
		// walkDOM cannot be used here — parallel two-tree traversal requires pairing
		// corresponding nodes at each step across both trees simultaneously.
		var stack = [{ node: this, other: otherNode }];
		while (stack.length > 0) {
			var pair = stack.pop();
			var node = pair.node;
			var other = pair.other;

			if (node.nodeType !== other.nodeType) return false;

			switch (node.nodeType) {
				case node.DOCUMENT_TYPE_NODE:
					if (node.name !== other.name) return false;
					if (node.publicId !== other.publicId) return false;
					if (node.systemId !== other.systemId) return false;
					break;
				case node.ELEMENT_NODE:
					if (node.namespaceURI !== other.namespaceURI) return false;
					if (node.prefix !== other.prefix) return false;
					if (node.localName !== other.localName) return false;
					if (node.attributes.length !== other.attributes.length) return false;
					for (var i = 0; i < node.attributes.length; i++) {
						var attr = node.attributes.item(i);
						var otherAttr = other.getAttributeNodeNS(attr.namespaceURI, attr.localName);
						if (!otherAttr) return false;
						stack.push({ node: attr, other: otherAttr });
					}
					break;
				case node.ATTRIBUTE_NODE:
					if (node.namespaceURI !== other.namespaceURI) return false;
					if (node.localName !== other.localName) return false;
					if (node.value !== other.value) return false;
					break;
				case node.PROCESSING_INSTRUCTION_NODE:
					if (node.target !== other.target || node.data !== other.data) return false;
					break;
				case node.TEXT_NODE:
				case node.CDATA_SECTION_NODE:
				case node.COMMENT_NODE:
					if (node.data !== other.data) return false;
					break;
			}

			if (node.childNodes.length !== other.childNodes.length) return false;

			// Push children in reverse order so index 0 is processed first (LIFO).
			for (var i = node.childNodes.length - 1; i >= 0; i--) {
				stack.push({ node: node.childNodes[i], other: other.childNodes[i] });
			}
		}

		return true;
	},
	/**
	 * Checks whether or not the given node is this node.
	 *
	 * @param {Node} [otherNode]
	 */
	isSameNode: function (otherNode) {
		return this === otherNode;
	},
	/**
	 * Inserts a node before a reference node as a child of this node.
	 *
	 * @param {Node} newChild
	 * The new child node to be inserted.
	 * @param {Node | null} refChild
	 * The reference node before which newChild will be inserted.
	 * @returns {Node}
	 * The new child node successfully inserted.
	 * @throws {DOMException}
	 * Throws a DOMException if inserting the node would result in a DOM tree that is not
	 * well-formed, or if `child` is provided but is not a child of `parent`.
	 * See {@link _insertBefore} for more details.
	 * @since Modified in DOM L2
	 */
	insertBefore: function (newChild, refChild) {
		return _insertBefore(this, newChild, refChild);
	},
	/**
	 * Replaces an old child node with a new child node within this node.
	 *
	 * @param {Node} newChild
	 * The new node that is to replace the old node.
	 * If it already exists in the DOM, it is removed from its original position.
	 * @param {Node} oldChild
	 * The existing child node to be replaced.
	 * @returns {Node}
	 * Returns the replaced child node.
	 * @throws {DOMException}
	 * Throws a DOMException if replacing the node would result in a DOM tree that is not
	 * well-formed, or if `oldChild` is not a child of `this`.
	 * This can also occur if the pre-replacement validity assertion fails.
	 * See {@link _insertBefore}, {@link Node.removeChild}, and
	 * {@link assertPreReplacementValidityInDocument} for more details.
	 * @see https://dom.spec.whatwg.org/#concept-node-replace
	 */
	replaceChild: function (newChild, oldChild) {
		_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
		if (oldChild) {
			this.removeChild(oldChild);
		}
	},
	/**
	 * Removes an existing child node from this node.
	 *
	 * @param {Node} oldChild
	 * The child node to be removed.
	 * @returns {Node}
	 * Returns the removed child node.
	 * @throws {DOMException}
	 * Throws a DOMException if `oldChild` is not a child of `this`.
	 * See {@link _removeChild} for more details.
	 */
	removeChild: function (oldChild) {
		return _removeChild(this, oldChild);
	},
	/**
	 * Appends a child node to this node.
	 *
	 * @param {Node} newChild
	 * The child node to be appended to this node.
	 * If it already exists in the DOM, it is removed from its original position.
	 * @returns {Node}
	 * Returns the appended child node.
	 * @throws {DOMException}
	 * Throws a DOMException if appending the node would result in a DOM tree that is not
	 * well-formed, or if `newChild` is not a valid Node.
	 * See {@link insertBefore} for more details.
	 */
	appendChild: function (newChild) {
		return this.insertBefore(newChild, null);
	},
	/**
	 * Determines whether this node has any child nodes.
	 *
	 * @returns {boolean}
	 * Returns true if this node has any child nodes, and false otherwise.
	 */
	hasChildNodes: function () {
		return this.firstChild != null;
	},
	/**
	 * Creates a copy of the calling node.
	 *
	 * @param {boolean} deep
	 * If true, the contents of the node are recursively copied.
	 * If false, only the node itself (and its attributes, if it is an element) are copied.
	 * @returns {Node}
	 * Returns the newly created copy of the node.
	 * @throws {DOMException}
	 * May throw a DOMException if operations within {@link Element#setAttributeNode} or
	 * {@link Node#appendChild} (which are potentially invoked in this method) do not meet their
	 * specific constraints.
	 * @see {@link cloneNode}
	 */
	cloneNode: function (deep) {
		return cloneNode(this.ownerDocument || this, this, deep);
	},
	/**
	 * Puts the specified node and all of its subtree into a "normalized" form. In a normalized
	 * subtree, no text nodes in the subtree are empty and there are no adjacent text nodes.
	 *
	 * Specifically, this method merges any adjacent text nodes (i.e., nodes for which `nodeType`
	 * is `TEXT_NODE`) into a single node with the combined data. It also removes any empty text
	 * nodes.
	 *
	 * This method iterativly traverses all child nodes to normalize all descendent nodes within
	 * the subtree.
	 *
	 * @throws {DOMException}
	 * May throw a DOMException if operations within removeChild or appendData (which are
	 * potentially invoked in this method) do not meet their specific constraints.
	 * @since Modified in DOM Level 2
	 * @see {@link Node.removeChild}
	 * @see {@link CharacterData.appendData}
	 * @see ../docs/walk-dom.md.
	 */
	normalize: function () {
		walkDOM(this, null, {
			enter: function (node) {
				// Merge adjacent text children of node before walkDOM schedules them.
				// walkDOM reads lastChild/previousSibling after enter returns, so the
				// surviving post-merge children are what it descends into.
				var child = node.firstChild;
				while (child) {
					var next = child.nextSibling;
					if (next !== null && next.nodeType === TEXT_NODE && child.nodeType === TEXT_NODE) {
						node.removeChild(next);
						child.appendData(next.data);
						// Do not advance child: re-check new nextSibling for another text run
					} else {
						child = next;
					}
				}
				return true; // descend into surviving children
			},
		});
	},
	/**
	 * Checks whether the DOM implementation implements a specific feature and its version.
	 *
	 * @deprecated
	 * Since `DOMImplementation.hasFeature` is deprecated and always returns true.
	 * @param {string} feature
	 * The package name of the feature to test. This is the same name that can be passed to the
	 * method `hasFeature` on `DOMImplementation`.
	 * @param {string} version
	 * This is the version number of the package name to test.
	 * @returns {boolean}
	 * Returns true in all cases in the current implementation.
	 * @since Introduced in DOM Level 2
	 * @see {@link DOMImplementation.hasFeature}
	 */
	isSupported: function (feature, version) {
		return this.ownerDocument.implementation.hasFeature(feature, version);
	},
	/**
	 * Look up the prefix associated to the given namespace URI, starting from this node.
	 * **The default namespace declarations are ignored by this method.**
	 * See Namespace Prefix Lookup for details on the algorithm used by this method.
	 *
	 * **This behavior is different from the in the specs**:
	 * - no node type specific handling
	 * - uses the internal attribute _nsMap for resolving namespaces that is updated when changing attributes
	 *
	 * @param {string | null} namespaceURI
	 * The namespace URI for which to find the associated prefix.
	 * @returns {string | null}
	 * The associated prefix, if found; otherwise, null.
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo
	 * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix
	 * @see https://github.com/xmldom/xmldom/issues/322
	 * @prettierignore
	 */
	lookupPrefix: function (namespaceURI) {
		var el = this;
		while (el) {
			var map = el._nsMap;
			//console.dir(map)
			if (map) {
				for (var n in map) {
					if (hasOwn(map, n) && map[n] === namespaceURI) {
						return n;
					}
				}
			}
			el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
		}
		return null;
	},
	/**
	 * This function is used to look up the namespace URI associated with the given prefix,
	 * starting from this node.
	 *
	 * **This behavior is different from the in the specs**:
	 * - no node type specific handling
	 * - uses the internal attribute _nsMap for resolving namespaces that is updated when changing attributes
	 *
	 * @param {string | null} prefix
	 * The prefix for which to find the associated namespace URI.
	 * @returns {string | null}
	 * The associated namespace URI, if found; otherwise, null.
	 * @since DOM Level 3
	 * @see https://dom.spec.whatwg.org/#dom-node-lookupnamespaceuri
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespaceURI
	 * @prettierignore
	 */
	lookupNamespaceURI: function (prefix) {
		var el = this;
		while (el) {
			var map = el._nsMap;
			//console.dir(map)
			if (map) {
				if (hasOwn(map, prefix)) {
					return map[prefix];
				}
			}
			el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
		}
		return null;
	},
	/**
	 * Determines whether the given namespace URI is the default namespace.
	 *
	 * The function works by looking up the prefix associated with the given namespace URI. If no
	 * prefix is found (i.e., the namespace URI is not registered in the namespace map of this
	 * node or any of its ancestors), it returns `true`, implying the namespace URI is considered
	 * the default.
	 *
	 * **This behavior is different from the in the specs**:
	 * - no node type specific handling
	 * - uses the internal attribute _nsMap for resolving namespaces that is updated when changing attributes
	 *
	 * @param {string | null} namespaceURI
	 * The namespace URI to be checked.
	 * @returns {boolean}
	 * Returns true if the given namespace URI is the default namespace, false otherwise.
	 * @since DOM Level 3
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-isDefaultNamespace
	 * @see https://dom.spec.whatwg.org/#dom-node-isdefaultnamespace
	 * @prettierignore
	 */
	isDefaultNamespace: function (namespaceURI) {
		var prefix = this.lookupPrefix(namespaceURI);
		return prefix == null;
	},
	/**
	 * Compares the reference node with a node with regard to their position in the document and
	 * according to the document order.
	 *
	 * @param {Node} other
	 * The node to compare the reference node to.
	 * @returns {number}
	 * Returns how the node is positioned relatively to the reference node according to the
	 * bitmask. 0 if reference node and given node are the same.
	 * @since DOM Level 3
	 * @see https://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#Node3-compare
	 * @see https://dom.spec.whatwg.org/#dom-node-comparedocumentposition
	 */
	compareDocumentPosition: function (other) {
		if (this === other) return 0;
		var node1 = other;
		var node2 = this;
		var attr1 = null;
		var attr2 = null;
		if (node1 instanceof Attr) {
			attr1 = node1;
			node1 = attr1.ownerElement;
		}
		if (node2 instanceof Attr) {
			attr2 = node2;
			node2 = attr2.ownerElement;
			if (attr1 && node1 && node2 === node1) {
				for (var i = 0, attr; (attr = node2.attributes[i]); i++) {
					if (attr === attr1)
						return DocumentPosition.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC + DocumentPosition.DOCUMENT_POSITION_PRECEDING;
					if (attr === attr2)
						return DocumentPosition.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC + DocumentPosition.DOCUMENT_POSITION_FOLLOWING;
				}
			}
		}
		if (!node1 || !node2 || node2.ownerDocument !== node1.ownerDocument) {
			return (
				DocumentPosition.DOCUMENT_POSITION_DISCONNECTED +
				DocumentPosition.DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC +
				(docGUID(node2.ownerDocument) > docGUID(node1.ownerDocument)
					? DocumentPosition.DOCUMENT_POSITION_FOLLOWING
					: DocumentPosition.DOCUMENT_POSITION_PRECEDING)
			);
		}
		if (attr2 && node1 === node2) {
			return DocumentPosition.DOCUMENT_POSITION_CONTAINS + DocumentPosition.DOCUMENT_POSITION_PRECEDING;
		}
		if (attr1 && node1 === node2) {
			return DocumentPosition.DOCUMENT_POSITION_CONTAINED_BY + DocumentPosition.DOCUMENT_POSITION_FOLLOWING;
		}

		var chain1 = [];
		var ancestor1 = node1.parentNode;
		while (ancestor1) {
			if (!attr2 && ancestor1 === node2) {
				return DocumentPosition.DOCUMENT_POSITION_CONTAINED_BY + DocumentPosition.DOCUMENT_POSITION_FOLLOWING;
			}
			chain1.push(ancestor1);
			ancestor1 = ancestor1.parentNode;
		}
		chain1.reverse();

		var chain2 = [];
		var ancestor2 = node2.parentNode;
		while (ancestor2) {
			if (!attr1 && ancestor2 === node1) {
				return DocumentPosition.DOCUMENT_POSITION_CONTAINS + DocumentPosition.DOCUMENT_POSITION_PRECEDING;
			}
			chain2.push(ancestor2);
			ancestor2 = ancestor2.parentNode;
		}
		chain2.reverse();

		var ca = commonAncestor(chain1, chain2);
		for (var n in ca.childNodes) {
			var child = ca.childNodes[n];
			if (child === node2) return DocumentPosition.DOCUMENT_POSITION_FOLLOWING;
			if (child === node1) return DocumentPosition.DOCUMENT_POSITION_PRECEDING;
			if (chain2.indexOf(child) >= 0) return DocumentPosition.DOCUMENT_POSITION_FOLLOWING;
			if (chain1.indexOf(child) >= 0) return DocumentPosition.DOCUMENT_POSITION_PRECEDING;
		}
		return 0;
	},
};

/**
 * Encodes special XML characters to their corresponding entities.
 *
 * @param {string} c
 * The character to be encoded.
 * @returns {string}
 * The encoded character.
 * @private
 */
function _xmlEncoder(c) {
	return (
		(c == '<' && '&lt;') || (c == '>' && '&gt;') || (c == '&' && '&amp;') || (c == '"' && '&quot;') || '&#' + c.charCodeAt() + ';'
	);
}

copy(NodeType, Node);
copy(NodeType, Node.prototype);
copy(DocumentPosition, Node);
copy(DocumentPosition, Node.prototype);

/**
 * Visits every node in the subtree rooted at `node` in depth-first pre-order.
 *
 * Delegates to {@link walkDOM} for traversal. The `callback` is called on each node;
 * if it returns a truthy value, traversal stops immediately.
 *
 * @param {Node} node
 * Root of the subtree to visit.
 * @param {function(Node): *} callback
 * Called for each node. A truthy return value stops traversal early.
 */
function _visitNode(node, callback) {
	walkDOM(node, null, {
		enter: function (n) {
			return callback(n) ? walkDOM.STOP : true;
		},
	});
}

/**
 * Depth-first pre/post-order DOM tree walker.
 *
 * Visits every node in the subtree rooted at `node`. For each node:
 *
 * 1. Calls `callbacks.enter(node, context)` before descending into the node's children. The
 * return value becomes the `context` passed to each child's `enter` call and to the matching
 * `exit` call.
 * 2. If `enter` returns `null` or `undefined`, the node's children are skipped;
 * sibling traversal continues normally.
 * 3. If `enter` returns `walkDOM.STOP`, the entire traversal is aborted immediately — no
 * further `enter` or `exit` calls are made.
 * 4. `lastChild` and `previousSibling` are read **after** `enter` returns, so `enter` may
 * safely modify the node's own child list before the walker descends. Modifying siblings of
 * the current node or any other part of the tree produces unpredictable results: nodes already
 * queued on the stack are visited regardless of DOM changes, and newly inserted nodes outside
 * the current child list are never visited.
 * 5. Calls `callbacks.exit(node, context)` (if provided) after all of a node's children have
 * been visited, passing the same `context` that `enter`
 * returned for that node.
 *
 * This implementation uses an explicit stack and does not recurse — it is safe on arbitrarily
 * deep trees.
 *
 * @param {Node} node
 * Root of the subtree to walk.
 * @param {*} context
 * Initial context value passed to the root node's `enter`.
 * @param {{ enter: function(Node, *): *, exit?: function(Node, *): void }} callbacks
 * @returns {void | walkDOM.STOP}
 * @see ../docs/walk-dom.md.
 */
function walkDOM(node, context, callbacks) {
	// Each stack frame is {node, context, phase}:
	//   walkDOM.ENTER — call enter, then push children
	//   walkDOM.EXIT  — call exit
	var stack = [{ node: node, context: context, phase: walkDOM.ENTER }];
	while (stack.length > 0) {
		var frame = stack.pop();
		if (frame.phase === walkDOM.ENTER) {
			var childContext = callbacks.enter(frame.node, frame.context);
			if (childContext === walkDOM.STOP) {
				return walkDOM.STOP;
			}
			// Push exit frame before children so it fires after all children are processed (Last In First Out)
			stack.push({ node: frame.node, context: childContext, phase: walkDOM.EXIT });
			if (childContext === null || childContext === undefined) {
				continue; // skip children
			}
			// lastChild is read after enter returns, so enter may modify the child list.
			var child = frame.node.lastChild;
			// Traverse from lastChild backwards so that pushing onto the stack
			// naturally yields firstChild on top (processed first).
			while (child) {
				stack.push({ node: child, context: childContext, phase: walkDOM.ENTER });
				child = child.previousSibling;
			}
		} else {
			// frame.phase === walkDOM.EXIT
			if (callbacks.exit) {
				callbacks.exit(frame.node, frame.context);
			}
		}
	}
}

/**
 * Sentinel value returned from a `walkDOM` `enter` callback to abort the entire traversal
 * immediately.
 *
 * @type {symbol}
 */
walkDOM.STOP = Symbol('walkDOM.STOP');
/**
 * Phase constant for a stack frame that has not yet been visited.
 * The `enter` callback is called and children are scheduled.
 *
 * @type {number}
 */
walkDOM.ENTER = 0;
/**
 * Phase constant for a stack frame whose subtree has been fully visited.
 * The `exit` callback is called.
 *
 * @type {number}
 */
walkDOM.EXIT = 1;

/**
 * @typedef DocumentOptions
 * @property {string} [contentType=MIME_TYPE.XML_APPLICATION]
 */
/**
 * The Document interface describes the common properties and methods for any kind of document.
 *
 * It should usually be created using `new DOMImplementation().createDocument(...)`
 * or `new DOMImplementation().createHTMLDocument(...)`.
 *
 * The constructor is considered a private API and offers to initially set the `contentType`
 * property via it's options parameter.
 *
 * @class
 * @param {Symbol} symbol
 * @param {DocumentOptions} [options]
 * @augments Node
 * @private
 * @see https://developer.mozilla.org/en-US/docs/Web/API/Document
 * @see https://dom.spec.whatwg.org/#interface-document
 */
function Document(symbol, options) {
	checkSymbol(symbol);

	var opt = options || {};
	this.ownerDocument = this;
	/**
	 * The mime type of the document is determined at creation time and can not be modified.
	 *
	 * @type {string}
	 * @see https://dom.spec.whatwg.org/#concept-document-content-type
	 * @see {@link DOMImplementation}
	 * @see {@link MIME_TYPE}
	 * @readonly
	 */
	this.contentType = opt.contentType || MIME_TYPE.XML_APPLICATION;
	/**
	 * @type {'html' | 'xml'}
	 * @see https://dom.spec.whatwg.org/#concept-document-type
	 * @see {@link DOMImplementation}
	 * @readonly
	 */
	this.type = isHTMLMimeType(this.contentType) ? 'html' : 'xml';
}

/**
 * Updates the namespace mapping of an element when a new attribute is added.
 *
 * @param {Document} doc
 * The document that the element belongs to.
 * @param {Element} el
 * The element to which the attribute is being added.
 * @param {Attr} newAttr
 * The new attribute being added.
 * @private
 */
function _onAddAttribute(doc, el, newAttr) {
	doc && doc._inc++;
	var ns = newAttr.namespaceURI;
	if (ns === NAMESPACE.XMLNS) {
		//update namespace
		el._nsMap[newAttr.prefix ? newAttr.localName : ''] = newAttr.value;
	}
}

/**
 * Updates the namespace mapping of an element when an attribute is removed.
 *
 * @param {Document} doc
 * The document that the element belongs to.
 * @param {Element} el
 * The element from which the attribute is being removed.
 * @param {Attr} newAttr
 * The attribute being removed.
 * @param {boolean} remove
 * Indicates whether the attribute is to be removed.
 * @private
 */
function _onRemoveAttribute(doc, el, newAttr, remove) {
	doc && doc._inc++;
	var ns = newAttr.namespaceURI;
	if (ns === NAMESPACE.XMLNS) {
		//update namespace
		delete el._nsMap[newAttr.prefix ? newAttr.localName : ''];
	}
}

/**
 * Updates `parent.childNodes`, adjusting the indexed items and its `length`.
 * If `newChild` is provided and has no nextSibling, it will be appended.
 * Otherwise, it's assumed that an item has been removed or inserted,
 * and `parent.firstNode` and its `.nextSibling` to re-indexing all child nodes of `parent`.
 *
 * @param {Document} doc
 * The parent document of `el`.
 * @param {Node} parent
 * The parent node whose childNodes list needs to be updated.
 * @param {Node} [newChild]
 * The new child node to be appended. If not provided, the function assumes a node has been
 * removed.
 * @private
 */
function _onUpdateChild(doc, parent, newChild) {
	if (doc && doc._inc) {
		doc._inc++;
		var childNodes = parent.childNodes;
		// assumes nextSibling and previousSibling were already configured upfront
		if (newChild && !newChild.nextSibling) {
			// if an item has been appended, we only need to update the last index and the length
			childNodes[childNodes.length++] = newChild;
		} else {
			// otherwise we need to reindex all items,
			// which can take a while when processing nodes with a lot of children
			var child = parent.firstChild;
			var i = 0;
			while (child) {
				childNodes[i++] = child;
				child = child.nextSibling;
			}
			childNodes.length = i;
			delete childNodes[childNodes.length];
		}
	}
}

/**
 * Removes the connections between `parentNode` and `child`
 * and any existing `child.previousSibling` or `child.nextSibling`.
 *
 * @param {Node} parentNode
 * The parent node from which the child node is to be removed.
 * @param {Node} child
 * The child node to be removed from the parentNode.
 * @returns {Node}
 * Returns the child node that was removed.
 * @throws {DOMException}
 * With code:
 * - {@link DOMException.NOT_FOUND_ERR} If the parentNode is not the parent of the child node.
 * @private
 * @see https://github.com/xmldom/xmldom/issues/135
 * @see https://github.com/xmldom/xmldom/issues/145
 */
function _removeChild(parentNode, child) {
	if (parentNode !== child.parentNode) {
		throw new DOMException(DOMException.NOT_FOUND_ERR, "child's parent is not parent");
	}
	var oldPreviousSibling = child.previousSibling;
	var oldNextSibling = child.nextSibling;
	if (oldPreviousSibling) {
		oldPreviousSibling.nextSibling = oldNextSibling;
	} else {
		parentNode.firstChild = oldNextSibling;
	}
	if (oldNextSibling) {
		oldNextSibling.previousSibling = oldPreviousSibling;
	} else {
		parentNode.lastChild = oldPreviousSibling;
	}
	_onUpdateChild(parentNode.ownerDocument, parentNode);
	child.parentNode = null;
	child.previousSibling = null;
	child.nextSibling = null;
	return child;
}

/**
 * Returns `true` if `node` can be a parent for insertion.
 *
 * @param {Node} node
 * @returns {boolean}
 */
function hasValidParentNodeType(node) {
	return (
		node &&
		(node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE)
	);
}

/**
 * Returns `true` if `node` can be inserted according to it's `nodeType`.
 *
 * @param {Node} node
 * @returns {boolean}
 */
function hasInsertableNodeType(node) {
	return (
		node &&
		(node.nodeType === Node.CDATA_SECTION_NODE ||
			node.nodeType === Node.COMMENT_NODE ||
			node.nodeType === Node.DOCUMENT_FRAGMENT_NODE ||
			node.nodeType === Node.DOCUMENT_TYPE_NODE ||
			node.nodeType === Node.ELEMENT_NODE ||
			node.nodeType === Node.PROCESSING_INSTRUCTION_NODE ||
			node.nodeType === Node.TEXT_NODE)
	);
}

/**
 * Returns true if `node` is a DOCTYPE node.
 *
 * @param {Node} node
 * @returns {boolean}
 */
function isDocTypeNode(node) {
	return node && node.nodeType === Node.DOCUMENT_TYPE_NODE;
}

/**
 * Returns true if the node is an element.
 *
 * @param {Node} node
 * @returns {boolean}
 */
function isElementNode(node) {
	return node && node.nodeType === Node.ELEMENT_NODE;
}
/**
 * Returns true if `node` is a text node.
 *
 * @param {Node} node
 * @returns {boolean}
 */
function isTextNode(node) {
	return node && node.nodeType === Node.TEXT_NODE;
}

/**
 * Check if en element node can be inserted before `child`, or at the end if child is falsy,
 * according to the presence and position of a doctype node on the same level.
 *
 * @param {Document} doc
 * The document node.
 * @param {Node} child
 * The node that would become the nextSibling if the element would be inserted.
 * @returns {boolean}
 * `true` if an element can be inserted before child.
 * @private
 */
function isElementInsertionPossible(doc, child) {
	var parentChildNodes = doc.childNodes || [];
	if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {
		return false;
	}
	var docTypeNode = find(parentChildNodes, isDocTypeNode);
	return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
}

/**
 * Check if en element node can be inserted before `child`, or at the end if child is falsy,
 * according to the presence and position of a doctype node on the same level.
 *
 * @param {Node} doc
 * The document node.
 * @param {Node} child
 * The node that would become the nextSibling if the element would be inserted.
 * @returns {boolean}
 * `true` if an element can be inserted before child.
 * @private
 */
function isElementReplacementPossible(doc, child) {
	var parentChildNodes = doc.childNodes || [];

	function hasElementChildThatIsNotChild(node) {
		return isElementNode(node) && node !== child;
	}

	if (find(parentChildNodes, hasElementChildThatIsNotChild)) {
		return false;
	}
	var docTypeNode = find(parentChildNodes, isDocTypeNode);
	return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
}

/**
 * Asserts pre-insertion validity of a node into a parent before a child.
 * Throws errors for invalid node combinations that would result in an ill-formed DOM.
 *
 * @param {Node} parent
 * The parent node to insert `node` into.
 * @param {Node} node
 * The node to insert.
 * @param {Node | null} child
 * The node that should become the `nextSibling` of `node`. If null, no sibling is considered.
 * @throws {DOMException}
 * With code:
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If `parent` is not a Document,
 * DocumentFragment, or Element node.
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If `node` is a host-including inclusive
 * ancestor of `parent`. (Currently not implemented)
 * - {@link DOMException.NOT_FOUND_ERR} If `child` is non-null and its `parent` is not
 * `parent`.
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If `node` is not a DocumentFragment,
 * DocumentType, Element, or CharacterData node.
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If either `node` is a Text node and `parent` is
 * a document, or if `node` is a doctype and `parent` is not a document.
 * @private
 * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
 * @see https://dom.spec.whatwg.org/#concept-node-replace
 */
function assertPreInsertionValidity1to5(parent, node, child) {
	// 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a "HierarchyRequestError" DOMException.
	if (!hasValidParentNodeType(parent)) {
		throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);
	}
	// 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a "HierarchyRequestError" DOMException.
	// not implemented!
	// 3. If `child` is non-null and its parent is not `parent`, then throw a "NotFoundError" DOMException.
	if (child && child.parentNode !== parent) {
		throw new DOMException(DOMException.NOT_FOUND_ERR, 'child not in parent');
	}
	if (
		// 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a "HierarchyRequestError" DOMException.
		!hasInsertableNodeType(node) ||
		// 5. If either `node` is a Text node and `parent` is a document,
		// the sax parser currently adds top level text nodes, this will be fixed in 0.9.0
		// || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)
		// or `node` is a doctype and `parent` is not a document, then throw a "HierarchyRequestError" DOMException.
		(isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE)
	) {
		throw new DOMException(
			DOMException.HIERARCHY_REQUEST_ERR,
			'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType
		);
	}
}

/**
 * Asserts pre-insertion validity of a node into a document before a child.
 * Throws errors for invalid node combinations that would result in an ill-formed DOM.
 *
 * @param {Document} parent
 * The parent node to insert `node` into.
 * @param {Node} node
 * The node to insert.
 * @param {Node | undefined} child
 * The node that should become the `nextSibling` of `node`. If undefined, no sibling is
 * considered.
 * @returns {Node}
 * @throws {DOMException}
 * With code:
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If `node` is a DocumentFragment with more than
 * one element child or has a Text node child.
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If `node` is a DocumentFragment with one
 * element child and either `parent` has an element child, `child` is a doctype, or `child` is
 * non-null and a doctype is following `child`.
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If `node` is an Element and `parent` has an
 * element child, `child` is a doctype, or `child` is non-null and a doctype is following
 * `child`.
 * - {@link DOMException.HIERARCHY_REQUEST_ERR} If `node` is a DocumentType and `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.
 * @private
 * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
 * @see https://dom.spec.whatwg.org/#concept-node-replace
 */
function assertPreInsertionValidityInDocument(parent, node, child) {
	var parentChildNodes = parent.childNodes || [];
	var nodeChildNodes = node.childNodes || [];

	// DocumentFragment
	if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
		var nodeChildElements = nodeChildNodes.filter(isElementNode);
		// If node has more than one element child or has a Text node child.
		if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
		}
		// Otherwise, if `node` has one element child and either `parent` has an element child,
		// `child` is a doctype, or `child` is non-null and a doctype is following `child`.
		if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
		}
	}
	// Element
	if (isElementNode(node)) {
		// `parent` has an element child, `child` is a doctype,
		// or `child` is non-null and a doctype is following `child`.
		if (!isElementInsertionPossible(parent, child)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
		}
	}
	// DocumentType
	if (isDocTypeNode(node)) {
		// `parent` has a doctype child,
		if (find(parentChildNodes, isDocTypeNode)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
		}
		var parentElementChild = find(parentChildNodes, isElementNode);
		// `child` is non-null and an element is preceding `child`,
		if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
		}
		// or `child` is null and `parent` has an element child.
		if (!child && parentElementChild) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');
		}
	}
}

/**
 * @param {Document} parent
 * The parent node to insert `node` into.
 * @param {Node} node
 * The node to insert.
 * @param {Node | undefined} child
 * the node that should become the `nextSibling` of `node`
 * @returns {Node}
 * @throws {DOMException}
 * For several node combinations that would create a DOM that is not well-formed.
 * @throws {DOMException}
 * If `child` is provided but is not a child of `parent`.
 * @private
 * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
 * @see https://dom.spec.whatwg.org/#concept-node-replace
 */
function assertPreReplacementValidityInDocument(parent, node, child) {
	var parentChildNodes = parent.childNodes || [];
	var nodeChildNodes = node.childNodes || [];

	// DocumentFragment
	if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
		var nodeChildElements = nodeChildNodes.filter(isElementNode);
		// If `node` has more than one element child or has a Text node child.
		if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
		}
		// Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.
		if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
		}
	}
	// Element
	if (isElementNode(node)) {
		// `parent` has an element child that is not `child` or a doctype is following `child`.
		if (!isElementReplacementPossible(parent, child)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
		}
	}
	// DocumentType
	if (isDocTypeNode(node)) {
		function hasDoctypeChildThatIsNotChild(node) {
			return isDocTypeNode(node) && node !== child;
		}

		// `parent` has a doctype child that is not `child`,
		if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
		}
		var parentElementChild = find(parentChildNodes, isElementNode);
		// or an element is preceding `child`.
		if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
			throw new DOMException(DOMException.HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
		}
	}
}

/**
 * Inserts a node into a parent node before a child node.
 *
 * @param {Node} parent
 * The parent node to insert the node into.
 * @param {Node} node
 * The node to insert into the parent.
 * @param {Node | null} child
 * The node that should become the next sibling of the node.
 * If null, the function inserts the node at the end of the children of the parent node.
 * @param {Function} [_inDocumentAssertion]
 * An optional function to check pre-insertion validity if parent is a document node.
 * Defaults to {@link assertPreInsertionValidityInDocument}
 * @returns {Node}
 * Returns the inserted node.
 * @throws {DOMException}
 * Throws a DOMException if inserting the node would result in a DOM tree that is not
 * well-formed. See {@link assertPreInsertionValidity1to5},
 * {@link assertPreInsertionValidityInDocument}.
 * @throws {DOMException}
 * Throws a DOMException if child is provided but is not a child of the parent. See
 * {@link Node.removeChild}
 * @private
 * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
 */
function _insertBefore(parent, node, child, _inDocumentAssertion) {
	// To ensure pre-insertion validity of a node into a parent before a child, run these steps:
	assertPreInsertionValidity1to5(parent, node, child);

	// If parent is a document, and any of the statements below, switched on the interface node implements,
	// are true, then throw a "HierarchyRequestError" DOMException.
	if (parent.nodeType === Node.DOCUMENT_NODE) {
		(_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);
	}

	var cp = node.parentNode;
	if (cp) {
		cp.removeChild(node); //remove and update
	}
	if (node.nodeType === DOCUMENT_FRAGMENT_NODE) {
		var newFirst = node.firstChild;
		if (newFirst == null) {
			return node;
		}
		var newLast = node.lastChild;
	} else {
		newFirst = newLast = node;
	}
	var pre = child ? child.previousSibling : parent.lastChild;

	newFirst.previousSibling = pre;
	newLast.nextSibling = child;

	if (pre) {
		pre.nextSibling = newFirst;
	} else {
		parent.firstChild = newFirst;
	}
	if (child == null) {
		parent.lastChild = newLast;
	} else {
		child.previousSibling = newLast;
	}
	do {
		newFirst.parentNode = parent;
	} while (newFirst !== newLast && (newFirst = newFirst.nextSibling));
	_onUpdateChild(parent.ownerDocument || parent, parent, node);
	if (node.nodeType == DOCUMENT_FRAGMENT_NODE) {
		node.firstChild = node.lastChild = null;
	}

	return node;
}

Document.prototype = {
	/**
	 * The implementation that created this document.
	 *
	 * @type DOMImplementation
	 * @readonly
	 */
	implementation: null,
	nodeName: '#document',
	nodeType: DOCUMENT_NODE,
	/**
	 * The DocumentType node of the document.
	 *
	 * @type DocumentType
	 * @readonly
	 */
	doctype: null,
	documentElement: null,
	_inc: 1,

	insertBefore: function (newChild, refChild) {
		//raises
		if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {
			var child = newChild.firstChild;
			while (child) {
				var next = child.nextSibling;
				this.insertBefore(child, refChild);
				child = next;
			}
			return newChild;
		}
		_insertBefore(this, newChild, refChild);
		newChild.ownerDocument = this;
		if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {
			this.documentElement = newChild;
		}

		return newChild;
	},
	removeChild: function (oldChild) {
		var removed = _removeChild(this, oldChild);
		if (removed === this.documentElement) {
			this.documentElement = null;
		}
		return removed;
	},
	replaceChild: function (newChild, oldChild) {
		//raises
		_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
		newChild.ownerDocument = this;
		if (oldChild) {
			this.removeChild(oldChild);
		}
		if (isElementNode(newChild)) {
			this.documentElement = newChild;
		}
	},
	/**
	 * Imports a node from another document into this document, creating a new copy owned by this
	 * document. The source node and its subtree are not modified.
	 *
	 * @param {Node} importedNode
	 * The node to import.
	 * @param {boolean} deep
	 * If true, the contents of the node are recursively imported.
	 * If false, only the node itself (and its attributes, if it is an element) are imported.
	 * @returns {Node}
	 * Returns the newly created import of the node.
	 * @see {@link importNode}
	 * @see {@link https://dom.spec.whatwg.org/#dom-document-importnode}
	 */
	importNode: function (importedNode, deep) {
		return importNode(this, importedNode, deep);
	},
	// Introduced in DOM Level 2:
	getElementById: function (id) {
		var rtv = null;
		_visitNode(this.documentElement, function (node) {
			if (node.nodeType == ELEMENT_NODE) {
				if (node.getAttribute('id') == id) {
					rtv = node;
					return true;
				}
			}
		});
		return rtv;
	},

	/**
	 * Creates a new `Element` that is owned by this `Document`.
	 * In HTML Documents `localName` is the lower cased `tagName`,
	 * otherwise no transformation is being applied.
	 * When `contentType` implies the HTML namespace, it will be set as `namespaceURI`.
	 *
	 * __This implementation differs from the specification:__ - The provided name is not checked
	 * against the `Name` production,
	 * so no related error will be thrown.
	 * - There is no interface `HTMLElement`, it is always an `Element`.
	 * - There is no support for a second argument to indicate using custom elements.
	 *
	 * @param {string} tagName
	 * @returns {Element}
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement
	 * @see https://dom.spec.whatwg.org/#dom-document-createelement
	 * @see https://dom.spec.whatwg.org/#concept-create-element
	 */
	createElement: function (tagName) {
		var node = new Element(PDC);
		node.ownerDocument = this;
		if (this.type === 'html') {
			tagName = tagName.toLowerCase();
		}
		if (hasDefaultHTMLNamespace(this.contentType)) {
			node.namespaceURI = NAMESPACE.HTML;
		}
		node.nodeName = tagName;
		node.tagName = tagName;
		node.localName = tagName;
		node.childNodes = new NodeList();
		var attrs = (node.attributes = new NamedNodeMap());
		attrs._ownerElement = node;
		return node;
	},
	/**
	 * @returns {DocumentFragment}
	 */
	createDocumentFragment: function () {
		var node = new DocumentFragment(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		return node;
	},
	/**
	 * @param {string} data
	 * @returns {Text}
	 */
	createTextNode: function (data) {
		var node = new Text(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		node.appendData(data);
		return node;
	},
	/**
	 * @param {string} data
	 * @returns {Comment}
	 * @see https://dom.spec.whatwg.org/#dom-document-createcomment
	 * @see https://www.w3.org/TR/xml/#NT-Comment XML 1.0 production [15]
	 * @see https://www.w3.org/TR/DOM-Parsing/#dfn-concept-serialize-xml §3.2.1.3
	 *
	 *      Note: no validation is performed at creation time. When the resulting document is
	 *      serialized with `requireWellFormed: true`, the serializer throws `InvalidStateError`
	 *      if the comment data contains `--` anywhere, ends with `-`, or contains characters
	 *      outside the XML Char production (W3C DOM Parsing §3.2.1.3). Without that option the
	 *      data is emitted verbatim.
	 */
	createComment: function (data) {
		var node = new Comment(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		node.appendData(data);
		return node;
	},
	/**
	 * Returns a new CDATASection node whose data is `data`.
	 *
	 * __This implementation differs from the specification:__ - calling this method on an HTML
	 * document does not throw `NotSupportedError`.
	 *
	 * @param {string} data
	 * @returns {CDATASection}
	 * @throws {DOMException}
	 * With code `INVALID_CHARACTER_ERR` if `data` contains `"]]>"`.
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/createCDATASection
	 * @see https://dom.spec.whatwg.org/#dom-document-createcdatasection
	 */
	createCDATASection: function (data) {
		if (data.indexOf(']]>') !== -1) {
			throw new DOMException(DOMException.INVALID_CHARACTER_ERR, 'data contains "]]>"');
		}
		var node = new CDATASection(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		node.appendData(data);
		return node;
	},
	/**
	 * Returns a ProcessingInstruction node whose target is target and data is data.
	 *
	 * __This behavior is slightly different from the in the specs__:
	 * - it does not do any input validation on the arguments and doesn't throw
	 * "InvalidCharacterError".
	 *
	 * Note: When the resulting document is serialized with `requireWellFormed: true`, the
	 * serializer throws `InvalidStateError` if `.target` contains `:` or is an ASCII
	 * case-insensitive match for `"xml"`, or if `.data` contains `?>` or characters outside the
	 * XML Char production (W3C DOM Parsing §3.2.1.7). Without that option the data is emitted
	 * verbatim.
	 *
	 * @param {string} target
	 * @param {string} data
	 * @returns {ProcessingInstruction}
	 * @see https://developer.mozilla.org/docs/Web/API/Document/createProcessingInstruction
	 * @see https://dom.spec.whatwg.org/#dom-document-createprocessinginstruction
	 * @see https://www.w3.org/TR/DOM-Parsing/#dfn-concept-serialize-xml §3.2.1.7
	 */
	createProcessingInstruction: function (target, data) {
		var node = new ProcessingInstruction(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		node.nodeName = node.target = target;
		node.nodeValue = node.data = data;
		return node;
	},
	/**
	 * Creates an `Attr` node that is owned by this document.
	 * In HTML Documents `localName` is the lower cased `name`,
	 * otherwise no transformation is being applied.
	 *
	 * __This implementation differs from the specification:__ - The provided name is not checked
	 * against the `Name` production,
	 * so no related error will be thrown.
	 *
	 * @param {string} name
	 * @returns {Attr}
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/createAttribute
	 * @see https://dom.spec.whatwg.org/#dom-document-createattribute
	 */
	createAttribute: function (name) {
		if (!g.QName_exact.test(name)) {
			throw new DOMException(DOMException.INVALID_CHARACTER_ERR, 'invalid character in name "' + name + '"');
		}
		if (this.type === 'html') {
			name = name.toLowerCase();
		}
		return this._createAttribute(name);
	},
	_createAttribute: function (name) {
		var node = new Attr(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		node.name = name;
		node.nodeName = name;
		node.localName = name;
		node.specified = true;
		return node;
	},
	/**
	 * Creates an EntityReference object.
	 * The current implementation does not fill the `childNodes` with those of the corresponding
	 * `Entity`
	 *
	 * @deprecated
	 * In DOM Level 4.
	 * @param {string} name
	 * The name of the entity to reference. No namespace well-formedness checks are performed.
	 * @returns {EntityReference}
	 * @throws {DOMException}
	 * With code `INVALID_CHARACTER_ERR` when `name` is not valid.
	 * @throws {DOMException}
	 * with code `NOT_SUPPORTED_ERR` when the document is of type `html`
	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-392B75AE
	 */
	createEntityReference: function (name) {
		if (!g.Name.test(name)) {
			throw new DOMException(DOMException.INVALID_CHARACTER_ERR, 'not a valid xml name "' + name + '"');
		}
		if (this.type === 'html') {
			throw new DOMException('document is an html document', DOMExceptionName.NotSupportedError);
		}

		var node = new EntityReference(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		node.nodeName = name;
		return node;
	},
	// Introduced in DOM Level 2:
	/**
	 * @param {string} namespaceURI
	 * @param {string} qualifiedName
	 * @returns {Element}
	 */
	createElementNS: function (namespaceURI, qualifiedName) {
		var validated = validateAndExtract(namespaceURI, qualifiedName);
		var node = new Element(PDC);
		var attrs = (node.attributes = new NamedNodeMap());
		node.childNodes = new NodeList();
		node.ownerDocument = this;
		node.nodeName = qualifiedName;
		node.tagName = qualifiedName;
		node.namespaceURI = validated[0];
		node.prefix = validated[1];
		node.localName = validated[2];
		attrs._ownerElement = node;
		return node;
	},
	// Introduced in DOM Level 2:
	/**
	 * @param {string} namespaceURI
	 * @param {string} qualifiedName
	 * @returns {Attr}
	 */
	createAttributeNS: function (namespaceURI, qualifiedName) {
		var validated = validateAndExtract(namespaceURI, qualifiedName);
		var node = new Attr(PDC);
		node.ownerDocument = this;
		node.childNodes = new NodeList();
		node.nodeName = qualifiedName;
		node.name = qualifiedName;
		node.specified = true;
		node.namespaceURI = validated[0];
		node.prefix = validated[1];
		node.localName = validated[2];
		return node;
	},
};
_extends(Document, Node);

function Element(symbol) {
	checkSymbol(symbol);

	this._nsMap = Object.create(null);
}
Element.prototype = {
	nodeType: ELEMENT_NODE,
	/**
	 * The attributes of this element.
	 *
	 * @type {NamedNodeMap | null}
	 */
	attributes: null,
	getQualifiedName: function () {
		return this.prefix ? this.prefix + ':' + this.localName : this.localName;
	},
	_isInHTMLDocumentAndNamespace: function () {
		return this.ownerDocument.type === 'html' && this.namespaceURI === NAMESPACE.HTML;
	},
	/**
	 * Implementaton of Level2 Core function hasAttributes.
	 *
	 * @returns {boolean}
	 * True if attribute list is not empty.
	 * @see https://www.w3.org/TR/DOM-Level-2-Core/#core-ID-NodeHasAttrs
	 */
	hasAttributes: function () {
		return !!(this.attributes && this.attributes.length);
	},
	hasAttribute: function (name) {
		return !!this.getAttributeNode(name);
	},
	/**
	 * Returns element’s first attribute whose qualified name is `name`, and `null`
	 * if there is no such attribute.
	 *
	 * @param {string} name
	 * @returns {string | null}
	 */
	getAttribute: function (name) {
		var attr = this.getAttributeNode(name);
		return attr ? attr.value : null;
	},
	getAttributeNode: function (name) {
		if (this._isInHTMLDocumentAndNamespace()) {
			name = name.toLowerCase();
		}
		return this.attributes.getNamedItem(name);
	},
	/**
	 * Sets the value of element’s first attribute whose qualified name is qualifiedName to value.
	 *
	 * @param {string} name
	 * @param {string} value
	 */
	setAttribute: function (name, value) {
		if (this._isInHTMLDocumentAndNamespace()) {
			name = name.toLowerCase();
		}
		var attr = this.getAttributeNode(name);
		if (attr) {
			attr.value = attr.nodeValue = '' + value;
		} else {
			attr = this.ownerDocument._createAttribute(name);
			attr.value = attr.nodeValue = '' + value;
			this.setAttributeNode(attr);
		}
	},
	removeAttribute: function (name) {
		var attr = this.getAttributeNode(name);
		attr && this.removeAttributeNode(attr);
	},
	setAttributeNode: function (newAttr) {
		return this.attributes.setNamedItem(newAttr);
	},
	setAttributeNodeNS: function (newAttr) {
		return this.attributes.setNamedItemNS(newAttr);
	},
	removeAttributeNode: function (oldAttr) {
		//console.log(this == oldAttr.ownerElement)
		return this.attributes.removeNamedItem(oldAttr.nodeName);
	},
	//get real attribute name,and remove it by removeAttributeNode
	removeAttributeNS: function (namespaceURI, localName) {
		var old = this.getAttributeNodeNS(namespaceURI, localName);
		old && this.removeAttributeNode(old);
	},

	hasAttributeNS: function (namespaceURI, localName) {
		return this.getAttributeNodeNS(namespaceURI, localName) != null;
	},
	/**
	 * Returns element’s attribute whose namespace is `namespaceURI` and local name is
	 * `localName`,
	 * or `null` if there is no such attribute.
	 *
	 * @param {string} namespaceURI
	 * @param {string} localName
	 * @returns {string | null}
	 */
	getAttributeNS: function (namespaceURI, localName) {
		var attr = this.getAttributeNodeNS(namespaceURI, localName);
		return attr ? attr.value : null;
	},
	/**
	 * Sets the value of element’s attribute whose namespace is `namespaceURI` and local name is
	 * `localName` to value.
	 *
	 * @param {string} namespaceURI
	 * @param {string} qualifiedName
	 * @param {string} value
	 * @see https://dom.spec.whatwg.org/#dom-element-setattributens
	 */
	setAttributeNS: function (namespaceURI, qualifiedName, value) {
		var validated = validateAndExtract(namespaceURI, qualifiedName);
		var localName = validated[2];
		var attr = this.getAttributeNodeNS(namespaceURI, localName);
		if (attr) {
			attr.value = attr.nodeValue = '' + value;
		} else {
			attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);
			attr.value = attr.nodeValue = '' + value;
			this.setAttributeNode(attr);
		}
	},
	getAttributeNodeNS: function (namespaceURI, localName) {
		return this.attributes.getNamedItemNS(namespaceURI, localName);
	},

	/**
	 * Returns a LiveNodeList of all child elements which have **all** of the given class name(s).
	 *
	 * Returns an empty list if `classNames` is an empty string or only contains HTML white space
	 * characters.
	 *
	 * Warning: This returns a live LiveNodeList.
	 * Changes in the DOM will reflect in the array as the changes occur.
	 * If an element selected by this array no longer qualifies for the selector,
	 * it will automatically be removed. Be aware of this for iteration purposes.
	 *
	 * @param {string} classNames
	 * Is a string representing the class name(s) to match; multiple class names are separated by
	 * (ASCII-)whitespace.
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Element/getElementsByClassName
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName
	 * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname
	 */
	getElementsByClassName: function (classNames) {
		var classNamesSet = toOrderedSet(classNames);
		return new LiveNodeList(this, function (base) {
			var ls = [];
			if (classNamesSet.length > 0) {
				_visitNode(base, function (node) {
					if (node !== base && node.nodeType === ELEMENT_NODE) {
						var nodeClassNames = node.getAttribute('class');
						// can be null if the attribute does not exist
						if (nodeClassNames) {
							// before splitting and iterating just compare them for the most common case
							var matches = classNames === nodeClassNames;
							if (!matches) {
								var nodeClassNamesSet = toOrderedSet(nodeClassNames);
								matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet));
							}
							if (matches) {
								ls.push(node);
							}
						}
					}
				});
			}
			return ls;
		});
	},

	/**
	 * Returns a LiveNodeList of elements with the given qualifiedName.
	 * Searching for all descendants can be done by passing `*` as `qualifiedName`.
	 *
	 * All descendants of the specified element are searched, but not the element itself.
	 * The returned list is live, which means it updates itself with the DOM tree automatically.
	 * Therefore, there is no need to call `Element.getElementsByTagName()`
	 * with the same element and arguments repeatedly if the DOM changes in between calls.
	 *
	 * When called on an HTML element in an HTML document,
	 * `getElementsByTagName` lower-cases the argument before searching for it.
	 * This is undesirable when trying to match camel-cased SVG elements (such as
	 * `<linearGradient>`) in an HTML document.
	 * Instead, use `Element.getElementsByTagNameNS()`,
	 * which preserves the capitalization of the tag name.
	 *
	 * `Element.getElementsByTagName` is similar to `Document.getElementsByTagName()`,
	 * except that it only searches for elements that are descendants of the specified element.
	 *
	 * @param {string} qualifiedName
	 * @returns {LiveNodeList}
	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Element/getElementsByTagName
	 * @see https://dom.spec.whatwg.org/#concept-getelementsbytagname
	 */
	getElementsByTagName: function (qualifiedName) {
		var isHTMLDocument = (this.nodeType === DOCUMENT_NODE ? this : this.ownerDocument).type === 'html';
		var lowerQualifiedName = qualifiedName.toLowerCase();
		return new LiveNodeList(this, function (base) {
			var ls = [];
			_visitNode(base, function (node) {
				if (node === base || node.nodeType !== ELEMENT_NODE) {
					return;
				}
				if (qualifiedName === '*') {
					ls.push(node);
				} else {
					var nodeQualifiedName = node.getQualifiedName();
					var matchingQName = isHTMLDocument && node.namespaceURI === NAMESPACE.HTML ? lowerQualifiedName : qualifiedName;
					if (nodeQualifiedName === matchingQName) {
						ls.push(node);
					}
				}
			});
			return ls;
		});
	},
	getElementsByTagNameNS: function (namespaceURI, localName) {
		return new LiveNodeList(this, function (base) {
			var ls = [];
			_visitNode(base, function (node) {
				if (
					node !== base &&
					node.nodeType === ELEMENT_NODE &&
					(namespaceURI === '*' || node.namespaceURI === namespaceURI) &&
					(localName === '*' || node.localName == localName)
				) {
					ls.push(node);
				}
			});
			return ls;
		});
	},
};
Document.prototype.getElementsByClassName = Element.prototype.getElementsByClassName;
Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;
Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;

_extends(Element, Node);
function Attr(symbol) {
	checkSymbol(symbol);

	this.namespaceURI = null;
	this.prefix = null;
	this.ownerElement = null;
}
Attr.prototype.nodeType = ATTRIBUTE_NODE;
_extends(Attr, Node);

function CharacterData(symbol) {
	checkSymbol(symbol);
}
CharacterData.prototype = {
	data: '',
	substringData: function (offset, count) {
		return this.data.substring(offset, offset + count);
	},
	appendData: function (text) {
		text = this.data + text;
		this.nodeValue = this.data = text;
		this.length = text.length;
	},
	insertData: function (offset, text) {
		this.replaceData(offset, 0, text);
	},
	deleteData: function (offset, count) {
		this.replaceData(offset, count, '');
	},
	replaceData: function (offset, count, text) {
		var start = this.data.substring(0, offset);
		var end = this.data.substring(offset + count);
		text = start + text + end;
		this.nodeValue = this.data = text;
		this.length = text.length;
	},
};
_extends(CharacterData, Node);
function Text(symbol) {
	checkSymbol(symbol);
}
Text.prototype = {
	nodeName: '#text',
	nodeType: TEXT_NODE,
	splitText: function (offset) {
		var text = this.data;
		var newText = text.substring(offset);
		text = text.substring(0, offset);
		this.data = this.nodeValue = text;
		this.length = text.length;
		var newNode = this.ownerDocument.createTextNode(newText);
		if (this.parentNode) {
			this.parentNode.insertBefore(newNode, this.nextSibling);
		}
		return newNode;
	},
};
_extends(Text, CharacterData);
function Comment(symbol) {
	checkSymbol(symbol);
}
Comment.prototype = {
	nodeName: '#comment',
	nodeType: COMMENT_NODE,
};
_extends(Comment, CharacterData);

function CDATASection(symbol) {
	checkSymbol(symbol);
}
CDATASection.prototype = {
	nodeName: '#cdata-section',
	nodeType: CDATA_SECTION_NODE,
};
_extends(CDATASection, Text);

/**
 * @class DocumentType
 * @augments Node
 * @property {string} publicId
 * The external subset public identifier, stored verbatim (including surrounding quotes).
 * Declared `readonly` by the WHATWG DOM spec; xmldom does not enforce this constraint —
 * direct property writes succeed and the written value is serialized verbatim.
 * When serialized with `requireWellFormed: true`, the serializer validates the value against
 * the XML `PubidLiteral` production and throws `InvalidStateError` if it does not match.
 * @property {string} systemId
 * The external subset system identifier, stored verbatim (including surrounding quotes).
 * Declared `readonly` by the WHATWG DOM spec; xmldom does not enforce this constraint —
 * direct property writes succeed and the written value is serialized verbatim.
 * When serialized with `requireWellFormed: true`, the serializer validates the value against
 * the XML `SystemLiteral` production and throws `InvalidStateError` if it does not match.
 * @property {string} internalSubset
 * The internal subset string (the raw content between `[` and `]`), or an empty string.
 * Declared `readonly` by the WHATWG DOM spec; xmldom does not enforce this constraint —
 * direct property writes succeed and the written value is serialized verbatim.
 * When serialized with `requireWellFormed: true`, the serializer throws `InvalidStateError`
 * if the value contains `"]>"`.
 * @see https://developer.mozilla.org/en-US/docs/Web/API/DocumentType MDN
 * @see https://dom.spec.whatwg.org/#interface-documenttype WHATWG DOM
 * @prettierignore
 */
function DocumentType(symbol) {
	checkSymbol(symbol);
}
DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;
_extends(DocumentType, Node);

function Notation(symbol) {
	checkSymbol(symbol);
}
Notation.prototype.nodeType = NOTATION_NODE;
_extends(Notation, Node);

function Entity(symbol) {
	checkSymbol(symbol);
}
Entity.prototype.nodeType = ENTITY_NODE;
_extends(Entity, Node);

function EntityReference(symbol) {
	checkSymbol(symbol);
}
EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;
_extends(EntityReference, Node);

function DocumentFragment(symbol) {
	checkSymbol(symbol);
}
DocumentFragment.prototype.nodeName = '#document-fragment';
DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE;
_extends(DocumentFragment, Node);

function ProcessingInstruction(symbol) {
	checkSymbol(symbol);
}
ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;
_extends(ProcessingInstruction, CharacterData);
function XMLSerializer() {}
/**
 * Returns the result of serializing `node` to XML.
 *
 * When `options.requireWellFormed` is `true`, the serializer throws `InvalidStateError` for
 * content that would produce ill-formed XML (e.g. CDATASection data containing `"]]>"`, Text
 * data containing characters outside the XML Char production, or a Document with no
 * `documentElement`).
 *
 * When `options.splitCDATASections` is `false`, CDATASection data is emitted verbatim even
 * when it contains `"]]>"`. When `true` (the default), `"]]>"` sequences are split across
 * concatenated CDATA sections — this behavior is **deprecated** and will be removed in the
 * next breaking release. Callers should migrate to `{ requireWellFormed: true }`, which throws
 * `InvalidStateError` instead of transforming.
 *
 * __This implementation differs from the specification:__ - CDATASection serialization is not
 * specified by W3C DOM Parsing or WHATWG DOM Parsing (see
 * {@link https://github.com/w3c/DOM-Parsing/issues/38 w3c/DOM-Parsing#38}).
 * When `splitCDATASections` is `true` (the default), `"]]>"` sequences in CDATASection data
 * are split across concatenated CDATA sections — this mechanism is derived from DOM Level 3
 * Core and is **deprecated**. The split mechanics will be removed in the next breaking
 * release. Callers that rely on this behavior should migrate to `{ requireWellFormed: true }`.
 * - W3C DOM Parsing §3.2.1.1 requires well-formedness checks on Element `localName`s,
 * prefixes,
 * and attribute serialization (duplicate attributes, namespace declarations, attribute value
 * characters) when `requireWellFormed` is `true`. These checks are **not implemented** in this
 * release — see the tracking issue filed against the next breaking milestone.
 *
 * @param {Node} node
 * @param {Object | function} [options]
 * Options object, or a legacy nodeFilter function (backward compatible).
 * @param {boolean} [options.requireWellFormed=false]
 * When `true`, throws `InvalidStateError` for content that would produce ill-formed XML.
 * @param {boolean} [options.splitCDATASections=true]
 * When `true` (default), splits `"]]>"` sequences in CDATASection data across concatenated
 * CDATA sections. **Deprecated** — will be removed in the next breaking release.
 * @param {function} [options.nodeFilter]
 * A filter function applied to each node before serialization.
 * @returns {string}
 * @throws {DOMException}
 * With name `InvalidStateError` when `requireWellFormed` is `true` and any of the following
 * conditions hold:
 * - CDATASection data contains `"]]>"`
 * - Text data contains characters outside the XML Char production
 * - a Comment node's data contains `--` anywhere or ends with `-`
 * - a ProcessingInstruction's target contains `:` or is an ASCII case-insensitive match for
 * `"xml"`, or its data contains `?>` or characters outside the XML Char production
 * - a DocumentType's `publicId` is non-empty and does not match the XML `PubidLiteral`
 * production (W3C DOM Parsing §3.2.1.3; XML 1.0 production [12])
 * - a DocumentType's `systemId` is non-empty and does not match the XML `SystemLiteral`
 * production (W3C DOM Parsing §3.2.1.3; XML 1.0 production [11])
 * - a DocumentType's `internalSubset` contains `"]>"`
 * - the Document has no `documentElement`
 * @see https://developer.mozilla.org/docs/Web/API/XMLSerializer/serializeToString
 * @see https://html.spec.whatwg.org/#dom-xmlserializer-serializetostring
 * @see https://github.com/w3c/DOM-Parsing/issues/84
 * @prettierignore
 */
XMLSerializer.prototype.serializeToString = function (node, options) {
	return nodeSerializeToString.call(node, options);
};
Node.prototype.toString = nodeSerializeToString;
function nodeSerializeToString(options) {
	// Normalize the user-supplied options into a single internal opts object so that the
	// internal serializer always works with a consistent shape rather than positional flags.
	var opts;
	if (typeof options === 'function') {
		opts = { requireWellFormed: false, splitCDATASections: true, nodeFilter: options };
	} else if (options != null) {
		opts = {
			requireWellFormed: !!options.requireWellFormed,
			splitCDATASections: options.splitCDATASections !== false,
			nodeFilter: options.nodeFilter || null,
		};
	} else {
		opts = { requireWellFormed: false, splitCDATASections: true, nodeFilter: null };
	}
	var buf = [];
	var refNode = (this.nodeType === DOCUMENT_NODE && this.documentElement) || this;
	var prefix = refNode.prefix;
	var uri = refNode.namespaceURI;

	if (uri && prefix == null) {
		var prefix = refNode.lookupPrefix(uri);
		if (prefix == null) {
			var visibleNamespaces = [
				{ namespace: uri, prefix: null },
				//{namespace:uri,prefix:''}
			];
		}
	}
	serializeToString(this, buf, visibleNamespaces, opts);
	return buf.join('');
}

function needNamespaceDefine(node, isHTML, visibleNamespaces) {
	var prefix = node.prefix || '';
	var uri = node.namespaceURI;
	// According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,
	// and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :
	// > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.
	// in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)
	// and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :
	// > [...] Furthermore, the attribute value [...] must not be an empty string.
	// so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document.
	if (!uri) {
		return false;
	}
	if ((prefix === 'xml' && uri === NAMESPACE.XML) || uri === NAMESPACE.XMLNS) {
		return false;
	}

	var i = visibleNamespaces.length;
	while (i--) {
		var ns = visibleNamespaces[i];
		// get namespace prefix
		if (ns.prefix === prefix) {
			return ns.namespace !== uri;
		}
	}
	return true;
}
/**
 * Literal whitespace other than space that appear in attribute values are serialized as
 * their entity references, so they will be preserved.
 * (In contrast to whitespace literals in the input which are normalized to spaces).
 *
 * Well-formed constraint: No < in Attribute Values:
 * > The replacement text of any entity referred to directly or indirectly
 * > in an attribute value must not contain a <.
 *
 * @see https://www.w3.org/TR/xml11/#CleanAttrVals
 * @see https://www.w3.org/TR/xml11/#NT-AttValue
 * @see https://www.w3.org/TR/xml11/#AVNormalize
 * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes
 * @prettierignore
 */
function addSerializedAttribute(buf, qualifiedName, value) {
	buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"');
}

function serializeToString(node, buf, visibleNamespaces, opts) {
	if (!visibleNamespaces) {
		visibleNamespaces = [];
	}
	var nodeFilter = opts.nodeFilter;
	var requireWellFormed = opts.requireWellFormed;
	var splitCDATASections = opts.splitCDATASections;
	var doc = node.nodeType === DOCUMENT_NODE ? node : node.ownerDocument;
	var isHTML = doc.type === 'html';

	walkDOM(
		node,
		{ ns: visibleNamespaces },
		{
			enter: function (n, ctx) {
				var namespaces = ctx.ns;

				if (nodeFilter) {
					n = nodeFilter(n);
					if (n) {
						if (typeof n == 'string') {
							buf.push(n);
							return null;
						}
					} else {
						return null;
					}
				}

				switch (n.nodeType) {
					case ELEMENT_NODE:
						var attrs = n.attributes;
						var len = attrs.length;
						var nodeName = n.tagName;

						var prefixedNodeName = nodeName;
						if (!isHTML && !n.prefix && n.namespaceURI) {
							var defaultNS;
							// lookup current default ns from `xmlns` attribute
							for (var ai = 0; ai < attrs.length; ai++) {
								if (attrs.item(ai).name === 'xmlns') {
									defaultNS = attrs.item(ai).value;
									break;
								}
							}
							if (!defaultNS) {
								// lookup current default ns in visibleNamespaces
								for (var nsi = namespaces.length - 1; nsi >= 0; nsi--) {
									var nsEntry = namespaces[nsi];
									if (nsEntry.prefix === '' && nsEntry.namespace === n.namespaceURI) {
										defaultNS = nsEntry.namespace;
										break;
									}
								}
							}
							if (defaultNS !== n.namespaceURI) {
								for (var nsi = namespaces.length - 1; nsi >= 0; nsi--) {
									var nsEntry = namespaces[nsi];
									if (nsEntry.namespace === n.namespaceURI) {
										if (nsEntry.prefix) {
											prefixedNodeName = nsEntry.prefix + ':' + nodeName;
										}
										break;
									}
								}
							}
						}

						buf.push('<', prefixedNodeName);

						// Build a fresh namespace snapshot for this element's children.
						// The slice prevents sibling elements from inheriting each other's declarations.
						var childNamespaces = namespaces.slice();

						for (var i = 0; i < len; i++) {
							// add namespaces for attributes
							var attr = attrs.item(i);
							if (attr.prefix == 'xmlns') {
								childNamespaces.push({
									prefix: attr.localName,
									namespace: attr.value,
								});
							} else if (attr.nodeName == 'xmlns') {
								childNamespaces.push({ prefix: '', namespace: attr.value });
							}
						}

						for (var i = 0; i < len; i++) {
							var attr = attrs.item(i);
							if (needNamespaceDefine(attr, isHTML, childNamespaces)) {
								var attrPrefix = attr.prefix || '';
								var uri = attr.namespaceURI;
								addSerializedAttribute(buf, attrPrefix ? 'xmlns:' + attrPrefix : 'xmlns', uri);
								childNamespaces.push({ prefix: attrPrefix, namespace: uri });
							}
							// Apply nodeFilter and serialize the attribute.
							var filteredAttr = nodeFilter ? nodeFilter(attr) : attr;
							if (filteredAttr) {
								if (typeof filteredAttr === 'string') {
									buf.push(filteredAttr);
								} else {
									addSerializedAttribute(buf, filteredAttr.name, filteredAttr.value);
								}
							}
						}

						// add namespace for current node
						if (nodeName === prefixedNodeName && needNamespaceDefine(n, isHTML, childNamespaces)) {
							var nodePrefix = n.prefix || '';
							var uri = n.namespaceURI;
							addSerializedAttribute(buf, nodePrefix ? 'xmlns:' + nodePrefix : 'xmlns', uri);
							childNamespaces.push({ prefix: nodePrefix, namespace: uri });
						}

						// in XML elements can be closed when they have no children
						var canCloseTag = !n.firstChild;
						if (canCloseTag && (isHTML || n.namespaceURI === NAMESPACE.HTML)) {
							// in HTML (doc or ns) only void elements can be closed right away
							canCloseTag = isHTMLVoidElement(nodeName);
						}
						if (canCloseTag) {
							buf.push('/>');
							// Self-closing: no children and no closing tag needed from exit.
							return null;
						}

						buf.push('>');

						// HTML raw text elements: serialize children as raw data without further descent.
						if (isHTML && isHTMLRawTextElement(nodeName)) {
							var child = n.firstChild;
							while (child) {
								if (child.data) {
									buf.push(child.data);
								} else {
									serializeToString(child, buf, childNamespaces.slice(), opts);
								}
								child = child.nextSibling;
							}
							buf.push('</', prefixedNodeName, '>');
							// Children handled manually above; prevent walkDOM from also traversing them.
							return null;
						}

						// Return child context so walkDOM descends; exit will emit the closing tag.
						return { ns: childNamespaces, tag: prefixedNodeName };
					case DOCUMENT_NODE:
					case DOCUMENT_FRAGMENT_NODE:
						if (requireWellFormed && n.nodeType === DOCUMENT_NODE && n.documentElement == null) {
							throw new DOMException('The Document has no documentElement', DOMExceptionName.InvalidStateError);
						}
						// Pass namespaces through; each child element will slice independently.
						return { ns: namespaces };
					case ATTRIBUTE_NODE:
						addSerializedAttribute(buf, n.name, n.value);
						return null;
					case TEXT_NODE:
						/*
						 * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,
						 * except when used as markup delimiters, or within a comment, a processing instruction,
						 * or a CDATA section.
						 * If they are needed elsewhere, they must be escaped using either numeric character
						 * references or the strings `&amp;` and `&lt;` respectively.
						 * The right angle bracket (>) may be represented using the string " &gt; ",
						 * and must, for compatibility, be escaped using either `&gt;`,
						 * or a character reference when it appears in the string `]]>` in content,
						 * when that string is not marking the end of a CDATA section.
						 *
						 * In the content of elements, character data is any string of characters which does not
						 * contain the start-delimiter of any markup and does not include the CDATA-section-close
						 * delimiter, `]]>`.
						 *
						 * @see https://www.w3.org/TR/xml/#NT-CharData
						 * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node
						 */
						if (requireWellFormed && g.InvalidChar.test(n.data)) {
							throw new DOMException(
								'The Text node data contains characters outside the XML Char production',
								DOMExceptionName.InvalidStateError
							);
						}
						buf.push(n.data.replace(/[<&>]/g, _xmlEncoder));
						return null;
					case CDATA_SECTION_NODE:
						if (requireWellFormed && n.data.indexOf(']]>') !== -1) {
							throw new DOMException('The CDATASection data contains "]]>"', DOMExceptionName.InvalidStateError);
						}
						if (splitCDATASections) {
							buf.push(g.CDATA_START, n.data.replace(/]]>/g, ']]]]><![CDATA[>'), g.CDATA_END);
						} else {
							buf.push(g.CDATA_START, n.data, g.CDATA_END);
						}
						return null;
					case COMMENT_NODE:
						if (requireWellFormed) {
							if (g.InvalidChar.test(n.data)) {
								throw new DOMException(
									'The comment node data contains characters outside the XML Char production',
									DOMExceptionName.InvalidStateError
								);
							}
							if (n.data.indexOf('--') !== -1 || n.data[n.data.length - 1] === '-') {
								throw new DOMException(
									'The comment node data contains "--" or ends with "-"',
									DOMExceptionName.InvalidStateError
								);
							}
						}
						buf.push(g.COMMENT_START, n.data, g.COMMENT_END);
						return null;
					case DOCUMENT_TYPE_NODE:
						var pubid = n.publicId;
						var sysid = n.systemId;
						if (requireWellFormed) {
							if (pubid && !g.PubidLiteral_match.test(pubid)) {
								throw new DOMException('DocumentType publicId is not a valid PubidLiteral', DOMExceptionName.InvalidStateError);
							}
							if (sysid && sysid !== '.' && !g.SystemLiteral_match.test(sysid)) {
								throw new DOMException('DocumentType systemId is not a valid SystemLiteral', DOMExceptionName.InvalidStateError);
							}
							if (n.internalSubset && n.internalSubset.indexOf(']>') !== -1) {
								throw new DOMException('DocumentType internalSubset contains "]>"', DOMExceptionName.InvalidStateError);
							}
						}
						buf.push(g.DOCTYPE_DECL_START, ' ', n.name);
						if (pubid) {
							buf.push(' ', g.PUBLIC, ' ', pubid);
							if (sysid && sysid !== '.') {
								buf.push(' ', sysid);
							}
						} else if (sysid && sysid !== '.') {
							buf.push(' ', g.SYSTEM, ' ', sysid);
						}
						if (n.internalSubset) {
							buf.push(' [', n.internalSubset, ']');
						}
						buf.push('>');
						return null;
					case PROCESSING_INSTRUCTION_NODE:
						if (requireWellFormed) {
							if (n.target.indexOf(':') !== -1 || n.target.toLowerCase() === 'xml') {
								throw new DOMException('The ProcessingInstruction target is not well-formed', DOMExceptionName.InvalidStateError);
							}
							if (g.InvalidChar.test(n.data)) {
								throw new DOMException(
									'The ProcessingInstruction data contains characters outside the XML Char production',
									DOMExceptionName.InvalidStateError
								);
							}
							if (n.data.indexOf('?>') !== -1) {
								throw new DOMException('The ProcessingInstruction data contains "?>"', DOMExceptionName.InvalidStateError);
							}
						}
						buf.push('<?', n.target, ' ', n.data, '?>');
						return null;
					case ENTITY_REFERENCE_NODE:
						buf.push('&', n.nodeName, ';');
						return null;
					//case ENTITY_NODE:
					//case NOTATION_NODE:
					default:
						buf.push('??', n.nodeName);
						return null;
				}
			},
			exit: function (n, childCtx) {
				// Emit the closing tag for elements that were opened (not self-closed, not raw text).
				if (childCtx && childCtx.tag) {
					buf.push('</', childCtx.tag, '>');
				}
			},
		}
	);
}
/**
 * Imports a node from a different document into `doc`, creating a new copy.
 * Delegates to {@link walkDOM} for traversal. Each node in the subtree is shallow-cloned,
 * stamped with `doc` as its `ownerDocument`, and detached (`parentNode` set to `null`).
 * Children are imported recursively when `deep` is `true`; for {@link Attr} nodes `deep` is
 * always forced to `true`
 * because an attribute's value lives in a child text node.
 *
 * @param {Document} doc
 * The document that will own the imported node.
 * @param {Node} node
 * The node to import.
 * @param {boolean} deep
 * If `true`, descendants are imported recursively.
 * @returns {Node}
 * The newly imported node, now owned by `doc`.
 */
function importNode(doc, node, deep) {
	var destRoot;
	walkDOM(node, null, {
		enter: function (srcNode, destParent) {
			// Shallow-clone the node and stamp it into the target document.
			var destNode = srcNode.cloneNode(false);
			destNode.ownerDocument = doc;
			destNode.parentNode = null;
			// capture as the root of the imported subtree or attach to parent.
			if (destParent === null) {
				destRoot = destNode;
			} else {
				destParent.appendChild(destNode);
			}
			// ATTRIBUTE_NODE must always be imported deeply: its value lives in a child text node.
			var shouldDeep = srcNode.nodeType === ATTRIBUTE_NODE || deep;
			return shouldDeep ? destNode : null;
		},
	});
	return destRoot;
}

/**
 * Creates a copy of a node from an existing one.
 *
 * @param {Document} doc
 * The Document object representing the document that the new node will belong to.
 * @param {Node} node
 * The node to clone.
 * @param {boolean} deep
 * If true, the contents of the node are recursively copied.
 * If false, only the node itself (and its attributes, if it is an element) are copied.
 * @returns {Node}
 * Returns the newly created copy of the node.
 * @throws {DOMException}
 * May throw a DOMException if operations within setAttributeNode or appendChild (which are
 * potentially invoked in this function) do not meet their specific constraints.
 */
function cloneNode(doc, node, deep) {
	var destRoot;
	walkDOM(node, null, {
		enter: function (srcNode, destParent) {
			// 1. Create a blank node of the same type and copy all scalar own properties.
			var destNode = new srcNode.constructor(PDC);
			for (var n in srcNode) {
				if (hasOwn(srcNode, n)) {
					var v = srcNode[n];
					if (typeof v != 'object') {
						if (v != destNode[n]) {
							destNode[n] = v;
						}
					}
				}
			}
			if (srcNode.childNodes) {
				destNode.childNodes = new NodeList();
			}
			destNode.ownerDocument = doc;
			// 2. Handle node-type-specific setup.
			//    Attributes are not DOM children, so they are cloned inline here
			//    rather than by walkDOM descent.
			//    ATTRIBUTE_NODE forces deep=true so its own children are walked.
			var shouldDeep = deep;
			switch (destNode.nodeType) {
				case ELEMENT_NODE:
					var attrs = srcNode.attributes;
					var attrs2 = (destNode.attributes = new NamedNodeMap());
					var len = attrs.length;
					attrs2._ownerElement = destNode;
					for (var i = 0; i < len; i++) {
						destNode.setAttributeNode(cloneNode(doc, attrs.item(i), true));
					}
					break;
				case ATTRIBUTE_NODE:
					shouldDeep = true;
			}
			// 3. Attach to parent, or capture as the root of the cloned subtree.
			if (destParent !== null) {
				destParent.appendChild(destNode);
			} else {
				destRoot = destNode;
			}
			// 4. Return destNode as the context for children (causes walkDOM to descend),
			//    or null to skip children (shallow clone).
			return shouldDeep ? destNode : null;
		},
	});
	return destRoot;
}

function __set__(object, key, value) {
	object[key] = value;
}

// Returns a new array of direct Element children.
// Passed to LiveNodeList to implement ParentNode.children.
// https://dom.spec.whatwg.org/#dom-parentnode-children
function childrenRefresh(node) {
	var ls = [];
	var child = node.firstChild;
	while (child) {
		if (child.nodeType === ELEMENT_NODE) {
			ls.push(child);
		}
		child = child.nextSibling;
	}
	return ls;
}

//do dynamic
try {
	if (Object.defineProperty) {
		Object.defineProperty(LiveNodeList.prototype, 'length', {
			get: function () {
				_updateLiveList(this);
				return this.$$length;
			},
		});

		/**
		 * The text content of this node and its descendants.
		 *
		 * For {@link Element} and {@link DocumentFragment} nodes, returns the concatenation of the
		 * `nodeValue` of every descendant text node, excluding processing instruction and comment
		 * nodes. For all other node types, returns `nodeValue`.
		 *
		 * Setting `textContent` on an element or document fragment replaces all child nodes with a
		 * single text node; on other nodes it sets `data`, `value`, and `nodeValue` directly.
		 *
		 * @type {string | null}
		 * @see {@link https://dom.spec.whatwg.org/#dom-node-textcontent}
		 */
		Object.defineProperty(Node.prototype, 'textContent', {
			get: function () {
				if (this.nodeType === ELEMENT_NODE || this.nodeType === DOCUMENT_FRAGMENT_NODE) {
					var buf = [];
					walkDOM(this, null, {
						enter: function (n) {
							if (n.nodeType === ELEMENT_NODE || n.nodeType === DOCUMENT_FRAGMENT_NODE) {
								return true; // enter children
							}
							if (n.nodeType === PROCESSING_INSTRUCTION_NODE || n.nodeType === COMMENT_NODE) {
								return null; // excluded from text content
							}
							buf.push(n.nodeValue);
						},
					});
					return buf.join('');
				}
				return this.nodeValue;
			},

			set: function (data) {
				switch (this.nodeType) {
					case ELEMENT_NODE:
					case DOCUMENT_FRAGMENT_NODE:
						while (this.firstChild) {
							this.removeChild(this.firstChild);
						}
						if (data || String(data)) {
							this.appendChild(this.ownerDocument.createTextNode(data));
						}
						break;

					default:
						this.data = data;
						this.value = data;
						this.nodeValue = data;
				}
			},
		});

		Object.defineProperty(Element.prototype, 'children', {
			get: function () {
				return new LiveNodeList(this, childrenRefresh);
			},
		});
		Object.defineProperty(Document.prototype, 'children', {
			get: function () {
				return new LiveNodeList(this, childrenRefresh);
			},
		});
		Object.defineProperty(DocumentFragment.prototype, 'children', {
			get: function () {
				return new LiveNodeList(this, childrenRefresh);
			},
		});

		__set__ = function (object, key, value) {
			//console.log(value)
			object['$$' + key] = value;
		};
	}
} catch (e) {
	//ie8
}

exports._updateLiveList = _updateLiveList;
exports.Attr = Attr;
exports.CDATASection = CDATASection;
exports.CharacterData = CharacterData;
exports.Comment = Comment;
exports.Document = Document;
exports.DocumentFragment = DocumentFragment;
exports.DocumentType = DocumentType;
exports.DOMImplementation = DOMImplementation;
exports.Element = Element;
exports.Entity = Entity;
exports.EntityReference = EntityReference;
exports.LiveNodeList = LiveNodeList;
exports.NamedNodeMap = NamedNodeMap;
exports.Node = Node;
exports.NodeList = NodeList;
exports.Notation = Notation;
exports.Text = Text;
exports.ProcessingInstruction = ProcessingInstruction;
exports.walkDOM = walkDOM;
exports.XMLSerializer = XMLSerializer;

},{"./conventions":2,"./errors":6,"./grammar":7}],5:[function(require,module,exports){
'use strict';

var freeze = require('./conventions').freeze;

/**
 * The entities that are predefined in every XML document.
 *
 * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1
 * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0
 * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML
 *      Wikipedia
 */
exports.XML_ENTITIES = freeze({
	amp: '&',
	apos: "'",
	gt: '>',
	lt: '<',
	quot: '"',
});

/**
 * A map of all entities that are detected in an HTML document.
 * They contain all entries from `XML_ENTITIES`.
 *
 * @see {@link XML_ENTITIES}
 * @see {@link DOMParser.parseFromString}
 * @see {@link DOMImplementation.prototype.createHTMLDocument}
 * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5)
 *      Spec
 * @see https://html.spec.whatwg.org/entities.json JSON
 * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names
 * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML
 * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML
 *      Wikipedia (HTML)
 * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML
 *      Wikpedia (XHTML)
 */
exports.HTML_ENTITIES = freeze({
	Aacute: '\u00C1',
	aacute: '\u00E1',
	Abreve: '\u0102',
	abreve: '\u0103',
	ac: '\u223E',
	acd: '\u223F',
	acE: '\u223E\u0333',
	Acirc: '\u00C2',
	acirc: '\u00E2',
	acute: '\u00B4',
	Acy: '\u0410',
	acy: '\u0430',
	AElig: '\u00C6',
	aelig: '\u00E6',
	af: '\u2061',
	Afr: '\uD835\uDD04',
	afr: '\uD835\uDD1E',
	Agrave: '\u00C0',
	agrave: '\u00E0',
	alefsym: '\u2135',
	aleph: '\u2135',
	Alpha: '\u0391',
	alpha: '\u03B1',
	Amacr: '\u0100',
	amacr: '\u0101',
	amalg: '\u2A3F',
	AMP: '\u0026',
	amp: '\u0026',
	And: '\u2A53',
	and: '\u2227',
	andand: '\u2A55',
	andd: '\u2A5C',
	andslope: '\u2A58',
	andv: '\u2A5A',
	ang: '\u2220',
	ange: '\u29A4',
	angle: '\u2220',
	angmsd: '\u2221',
	angmsdaa: '\u29A8',
	angmsdab: '\u29A9',
	angmsdac: '\u29AA',
	angmsdad: '\u29AB',
	angmsdae: '\u29AC',
	angmsdaf: '\u29AD',
	angmsdag: '\u29AE',
	angmsdah: '\u29AF',
	angrt: '\u221F',
	angrtvb: '\u22BE',
	angrtvbd: '\u299D',
	angsph: '\u2222',
	angst: '\u00C5',
	angzarr: '\u237C',
	Aogon: '\u0104',
	aogon: '\u0105',
	Aopf: '\uD835\uDD38',
	aopf: '\uD835\uDD52',
	ap: '\u2248',
	apacir: '\u2A6F',
	apE: '\u2A70',
	ape: '\u224A',
	apid: '\u224B',
	apos: '\u0027',
	ApplyFunction: '\u2061',
	approx: '\u2248',
	approxeq: '\u224A',
	Aring: '\u00C5',
	aring: '\u00E5',
	Ascr: '\uD835\uDC9C',
	ascr: '\uD835\uDCB6',
	Assign: '\u2254',
	ast: '\u002A',
	asymp: '\u2248',
	asympeq: '\u224D',
	Atilde: '\u00C3',
	atilde: '\u00E3',
	Auml: '\u00C4',
	auml: '\u00E4',
	awconint: '\u2233',
	awint: '\u2A11',
	backcong: '\u224C',
	backepsilon: '\u03F6',
	backprime: '\u2035',
	backsim: '\u223D',
	backsimeq: '\u22CD',
	Backslash: '\u2216',
	Barv: '\u2AE7',
	barvee: '\u22BD',
	Barwed: '\u2306',
	barwed: '\u2305',
	barwedge: '\u2305',
	bbrk: '\u23B5',
	bbrktbrk: '\u23B6',
	bcong: '\u224C',
	Bcy: '\u0411',
	bcy: '\u0431',
	bdquo: '\u201E',
	becaus: '\u2235',
	Because: '\u2235',
	because: '\u2235',
	bemptyv: '\u29B0',
	bepsi: '\u03F6',
	bernou: '\u212C',
	Bernoullis: '\u212C',
	Beta: '\u0392',
	beta: '\u03B2',
	beth: '\u2136',
	between: '\u226C',
	Bfr: '\uD835\uDD05',
	bfr: '\uD835\uDD1F',
	bigcap: '\u22C2',
	bigcirc: '\u25EF',
	bigcup: '\u22C3',
	bigodot: '\u2A00',
	bigoplus: '\u2A01',
	bigotimes: '\u2A02',
	bigsqcup: '\u2A06',
	bigstar: '\u2605',
	bigtriangledown: '\u25BD',
	bigtriangleup: '\u25B3',
	biguplus: '\u2A04',
	bigvee: '\u22C1',
	bigwedge: '\u22C0',
	bkarow: '\u290D',
	blacklozenge: '\u29EB',
	blacksquare: '\u25AA',
	blacktriangle: '\u25B4',
	blacktriangledown: '\u25BE',
	blacktriangleleft: '\u25C2',
	blacktriangleright: '\u25B8',
	blank: '\u2423',
	blk12: '\u2592',
	blk14: '\u2591',
	blk34: '\u2593',
	block: '\u2588',
	bne: '\u003D\u20E5',
	bnequiv: '\u2261\u20E5',
	bNot: '\u2AED',
	bnot: '\u2310',
	Bopf: '\uD835\uDD39',
	bopf: '\uD835\uDD53',
	bot: '\u22A5',
	bottom: '\u22A5',
	bowtie: '\u22C8',
	boxbox: '\u29C9',
	boxDL: '\u2557',
	boxDl: '\u2556',
	boxdL: '\u2555',
	boxdl: '\u2510',
	boxDR: '\u2554',
	boxDr: '\u2553',
	boxdR: '\u2552',
	boxdr: '\u250C',
	boxH: '\u2550',
	boxh: '\u2500',
	boxHD: '\u2566',
	boxHd: '\u2564',
	boxhD: '\u2565',
	boxhd: '\u252C',
	boxHU: '\u2569',
	boxHu: '\u2567',
	boxhU: '\u2568',
	boxhu: '\u2534',
	boxminus: '\u229F',
	boxplus: '\u229E',
	boxtimes: '\u22A0',
	boxUL: '\u255D',
	boxUl: '\u255C',
	boxuL: '\u255B',
	boxul: '\u2518',
	boxUR: '\u255A',
	boxUr: '\u2559',
	boxuR: '\u2558',
	boxur: '\u2514',
	boxV: '\u2551',
	boxv: '\u2502',
	boxVH: '\u256C',
	boxVh: '\u256B',
	boxvH: '\u256A',
	boxvh: '\u253C',
	boxVL: '\u2563',
	boxVl: '\u2562',
	boxvL: '\u2561',
	boxvl: '\u2524',
	boxVR: '\u2560',
	boxVr: '\u255F',
	boxvR: '\u255E',
	boxvr: '\u251C',
	bprime: '\u2035',
	Breve: '\u02D8',
	breve: '\u02D8',
	brvbar: '\u00A6',
	Bscr: '\u212C',
	bscr: '\uD835\uDCB7',
	bsemi: '\u204F',
	bsim: '\u223D',
	bsime: '\u22CD',
	bsol: '\u005C',
	bsolb: '\u29C5',
	bsolhsub: '\u27C8',
	bull: '\u2022',
	bullet: '\u2022',
	bump: '\u224E',
	bumpE: '\u2AAE',
	bumpe: '\u224F',
	Bumpeq: '\u224E',
	bumpeq: '\u224F',
	Cacute: '\u0106',
	cacute: '\u0107',
	Cap: '\u22D2',
	cap: '\u2229',
	capand: '\u2A44',
	capbrcup: '\u2A49',
	capcap: '\u2A4B',
	capcup: '\u2A47',
	capdot: '\u2A40',
	CapitalDifferentialD: '\u2145',
	caps: '\u2229\uFE00',
	caret: '\u2041',
	caron: '\u02C7',
	Cayleys: '\u212D',
	ccaps: '\u2A4D',
	Ccaron: '\u010C',
	ccaron: '\u010D',
	Ccedil: '\u00C7',
	ccedil: '\u00E7',
	Ccirc: '\u0108',
	ccirc: '\u0109',
	Cconint: '\u2230',
	ccups: '\u2A4C',
	ccupssm: '\u2A50',
	Cdot: '\u010A',
	cdot: '\u010B',
	cedil: '\u00B8',
	Cedilla: '\u00B8',
	cemptyv: '\u29B2',
	cent: '\u00A2',
	CenterDot: '\u00B7',
	centerdot: '\u00B7',
	Cfr: '\u212D',
	cfr: '\uD835\uDD20',
	CHcy: '\u0427',
	chcy: '\u0447',
	check: '\u2713',
	checkmark: '\u2713',
	Chi: '\u03A7',
	chi: '\u03C7',
	cir: '\u25CB',
	circ: '\u02C6',
	circeq: '\u2257',
	circlearrowleft: '\u21BA',
	circlearrowright: '\u21BB',
	circledast: '\u229B',
	circledcirc: '\u229A',
	circleddash: '\u229D',
	CircleDot: '\u2299',
	circledR: '\u00AE',
	circledS: '\u24C8',
	CircleMinus: '\u2296',
	CirclePlus: '\u2295',
	CircleTimes: '\u2297',
	cirE: '\u29C3',
	cire: '\u2257',
	cirfnint: '\u2A10',
	cirmid: '\u2AEF',
	cirscir: '\u29C2',
	ClockwiseContourIntegral: '\u2232',
	CloseCurlyDoubleQuote: '\u201D',
	CloseCurlyQuote: '\u2019',
	clubs: '\u2663',
	clubsuit: '\u2663',
	Colon: '\u2237',
	colon: '\u003A',
	Colone: '\u2A74',
	colone: '\u2254',
	coloneq: '\u2254',
	comma: '\u002C',
	commat: '\u0040',
	comp: '\u2201',
	compfn: '\u2218',
	complement: '\u2201',
	complexes: '\u2102',
	cong: '\u2245',
	congdot: '\u2A6D',
	Congruent: '\u2261',
	Conint: '\u222F',
	conint: '\u222E',
	ContourIntegral: '\u222E',
	Copf: '\u2102',
	copf: '\uD835\uDD54',
	coprod: '\u2210',
	Coproduct: '\u2210',
	COPY: '\u00A9',
	copy: '\u00A9',
	copysr: '\u2117',
	CounterClockwiseContourIntegral: '\u2233',
	crarr: '\u21B5',
	Cross: '\u2A2F',
	cross: '\u2717',
	Cscr: '\uD835\uDC9E',
	cscr: '\uD835\uDCB8',
	csub: '\u2ACF',
	csube: '\u2AD1',
	csup: '\u2AD0',
	csupe: '\u2AD2',
	ctdot: '\u22EF',
	cudarrl: '\u2938',
	cudarrr: '\u2935',
	cuepr: '\u22DE',
	cuesc: '\u22DF',
	cularr: '\u21B6',
	cularrp: '\u293D',
	Cup: '\u22D3',
	cup: '\u222A',
	cupbrcap: '\u2A48',
	CupCap: '\u224D',
	cupcap: '\u2A46',
	cupcup: '\u2A4A',
	cupdot: '\u228D',
	cupor: '\u2A45',
	cups: '\u222A\uFE00',
	curarr: '\u21B7',
	curarrm: '\u293C',
	curlyeqprec: '\u22DE',
	curlyeqsucc: '\u22DF',
	curlyvee: '\u22CE',
	curlywedge: '\u22CF',
	curren: '\u00A4',
	curvearrowleft: '\u21B6',
	curvearrowright: '\u21B7',
	cuvee: '\u22CE',
	cuwed: '\u22CF',
	cwconint: '\u2232',
	cwint: '\u2231',
	cylcty: '\u232D',
	Dagger: '\u2021',
	dagger: '\u2020',
	daleth: '\u2138',
	Darr: '\u21A1',
	dArr: '\u21D3',
	darr: '\u2193',
	dash: '\u2010',
	Dashv: '\u2AE4',
	dashv: '\u22A3',
	dbkarow: '\u290F',
	dblac: '\u02DD',
	Dcaron: '\u010E',
	dcaron: '\u010F',
	Dcy: '\u0414',
	dcy: '\u0434',
	DD: '\u2145',
	dd: '\u2146',
	ddagger: '\u2021',
	ddarr: '\u21CA',
	DDotrahd: '\u2911',
	ddotseq: '\u2A77',
	deg: '\u00B0',
	Del: '\u2207',
	Delta: '\u0394',
	delta: '\u03B4',
	demptyv: '\u29B1',
	dfisht: '\u297F',
	Dfr: '\uD835\uDD07',
	dfr: '\uD835\uDD21',
	dHar: '\u2965',
	dharl: '\u21C3',
	dharr: '\u21C2',
	DiacriticalAcute: '\u00B4',
	DiacriticalDot: '\u02D9',
	DiacriticalDoubleAcute: '\u02DD',
	DiacriticalGrave: '\u0060',
	DiacriticalTilde: '\u02DC',
	diam: '\u22C4',
	Diamond: '\u22C4',
	diamond: '\u22C4',
	diamondsuit: '\u2666',
	diams: '\u2666',
	die: '\u00A8',
	DifferentialD: '\u2146',
	digamma: '\u03DD',
	disin: '\u22F2',
	div: '\u00F7',
	divide: '\u00F7',
	divideontimes: '\u22C7',
	divonx: '\u22C7',
	DJcy: '\u0402',
	djcy: '\u0452',
	dlcorn: '\u231E',
	dlcrop: '\u230D',
	dollar: '\u0024',
	Dopf: '\uD835\uDD3B',
	dopf: '\uD835\uDD55',
	Dot: '\u00A8',
	dot: '\u02D9',
	DotDot: '\u20DC',
	doteq: '\u2250',
	doteqdot: '\u2251',
	DotEqual: '\u2250',
	dotminus: '\u2238',
	dotplus: '\u2214',
	dotsquare: '\u22A1',
	doublebarwedge: '\u2306',
	DoubleContourIntegral: '\u222F',
	DoubleDot: '\u00A8',
	DoubleDownArrow: '\u21D3',
	DoubleLeftArrow: '\u21D0',
	DoubleLeftRightArrow: '\u21D4',
	DoubleLeftTee: '\u2AE4',
	DoubleLongLeftArrow: '\u27F8',
	DoubleLongLeftRightArrow: '\u27FA',
	DoubleLongRightArrow: '\u27F9',
	DoubleRightArrow: '\u21D2',
	DoubleRightTee: '\u22A8',
	DoubleUpArrow: '\u21D1',
	DoubleUpDownArrow: '\u21D5',
	DoubleVerticalBar: '\u2225',
	DownArrow: '\u2193',
	Downarrow: '\u21D3',
	downarrow: '\u2193',
	DownArrowBar: '\u2913',
	DownArrowUpArrow: '\u21F5',
	DownBreve: '\u0311',
	downdownarrows: '\u21CA',
	downharpoonleft: '\u21C3',
	downharpoonright: '\u21C2',
	DownLeftRightVector: '\u2950',
	DownLeftTeeVector: '\u295E',
	DownLeftVector: '\u21BD',
	DownLeftVectorBar: '\u2956',
	DownRightTeeVector: '\u295F',
	DownRightVector: '\u21C1',
	DownRightVectorBar: '\u2957',
	DownTee: '\u22A4',
	DownTeeArrow: '\u21A7',
	drbkarow: '\u2910',
	drcorn: '\u231F',
	drcrop: '\u230C',
	Dscr: '\uD835\uDC9F',
	dscr: '\uD835\uDCB9',
	DScy: '\u0405',
	dscy: '\u0455',
	dsol: '\u29F6',
	Dstrok: '\u0110',
	dstrok: '\u0111',
	dtdot: '\u22F1',
	dtri: '\u25BF',
	dtrif: '\u25BE',
	duarr: '\u21F5',
	duhar: '\u296F',
	dwangle: '\u29A6',
	DZcy: '\u040F',
	dzcy: '\u045F',
	dzigrarr: '\u27FF',
	Eacute: '\u00C9',
	eacute: '\u00E9',
	easter: '\u2A6E',
	Ecaron: '\u011A',
	ecaron: '\u011B',
	ecir: '\u2256',
	Ecirc: '\u00CA',
	ecirc: '\u00EA',
	ecolon: '\u2255',
	Ecy: '\u042D',
	ecy: '\u044D',
	eDDot: '\u2A77',
	Edot: '\u0116',
	eDot: '\u2251',
	edot: '\u0117',
	ee: '\u2147',
	efDot: '\u2252',
	Efr: '\uD835\uDD08',
	efr: '\uD835\uDD22',
	eg: '\u2A9A',
	Egrave: '\u00C8',
	egrave: '\u00E8',
	egs: '\u2A96',
	egsdot: '\u2A98',
	el: '\u2A99',
	Element: '\u2208',
	elinters: '\u23E7',
	ell: '\u2113',
	els: '\u2A95',
	elsdot: '\u2A97',
	Emacr: '\u0112',
	emacr: '\u0113',
	empty: '\u2205',
	emptyset: '\u2205',
	EmptySmallSquare: '\u25FB',
	emptyv: '\u2205',
	EmptyVerySmallSquare: '\u25AB',
	emsp: '\u2003',
	emsp13: '\u2004',
	emsp14: '\u2005',
	ENG: '\u014A',
	eng: '\u014B',
	ensp: '\u2002',
	Eogon: '\u0118',
	eogon: '\u0119',
	Eopf: '\uD835\uDD3C',
	eopf: '\uD835\uDD56',
	epar: '\u22D5',
	eparsl: '\u29E3',
	eplus: '\u2A71',
	epsi: '\u03B5',
	Epsilon: '\u0395',
	epsilon: '\u03B5',
	epsiv: '\u03F5',
	eqcirc: '\u2256',
	eqcolon: '\u2255',
	eqsim: '\u2242',
	eqslantgtr: '\u2A96',
	eqslantless: '\u2A95',
	Equal: '\u2A75',
	equals: '\u003D',
	EqualTilde: '\u2242',
	equest: '\u225F',
	Equilibrium: '\u21CC',
	equiv: '\u2261',
	equivDD: '\u2A78',
	eqvparsl: '\u29E5',
	erarr: '\u2971',
	erDot: '\u2253',
	Escr: '\u2130',
	escr: '\u212F',
	esdot: '\u2250',
	Esim: '\u2A73',
	esim: '\u2242',
	Eta: '\u0397',
	eta: '\u03B7',
	ETH: '\u00D0',
	eth: '\u00F0',
	Euml: '\u00CB',
	euml: '\u00EB',
	euro: '\u20AC',
	excl: '\u0021',
	exist: '\u2203',
	Exists: '\u2203',
	expectation: '\u2130',
	ExponentialE: '\u2147',
	exponentiale: '\u2147',
	fallingdotseq: '\u2252',
	Fcy: '\u0424',
	fcy: '\u0444',
	female: '\u2640',
	ffilig: '\uFB03',
	fflig: '\uFB00',
	ffllig: '\uFB04',
	Ffr: '\uD835\uDD09',
	ffr: '\uD835\uDD23',
	filig: '\uFB01',
	FilledSmallSquare: '\u25FC',
	FilledVerySmallSquare: '\u25AA',
	fjlig: '\u0066\u006A',
	flat: '\u266D',
	fllig: '\uFB02',
	fltns: '\u25B1',
	fnof: '\u0192',
	Fopf: '\uD835\uDD3D',
	fopf: '\uD835\uDD57',
	ForAll: '\u2200',
	forall: '\u2200',
	fork: '\u22D4',
	forkv: '\u2AD9',
	Fouriertrf: '\u2131',
	fpartint: '\u2A0D',
	frac12: '\u00BD',
	frac13: '\u2153',
	frac14: '\u00BC',
	frac15: '\u2155',
	frac16: '\u2159',
	frac18: '\u215B',
	frac23: '\u2154',
	frac25: '\u2156',
	frac34: '\u00BE',
	frac35: '\u2157',
	frac38: '\u215C',
	frac45: '\u2158',
	frac56: '\u215A',
	frac58: '\u215D',
	frac78: '\u215E',
	frasl: '\u2044',
	frown: '\u2322',
	Fscr: '\u2131',
	fscr: '\uD835\uDCBB',
	gacute: '\u01F5',
	Gamma: '\u0393',
	gamma: '\u03B3',
	Gammad: '\u03DC',
	gammad: '\u03DD',
	gap: '\u2A86',
	Gbreve: '\u011E',
	gbreve: '\u011F',
	Gcedil: '\u0122',
	Gcirc: '\u011C',
	gcirc: '\u011D',
	Gcy: '\u0413',
	gcy: '\u0433',
	Gdot: '\u0120',
	gdot: '\u0121',
	gE: '\u2267',
	ge: '\u2265',
	gEl: '\u2A8C',
	gel: '\u22DB',
	geq: '\u2265',
	geqq: '\u2267',
	geqslant: '\u2A7E',
	ges: '\u2A7E',
	gescc: '\u2AA9',
	gesdot: '\u2A80',
	gesdoto: '\u2A82',
	gesdotol: '\u2A84',
	gesl: '\u22DB\uFE00',
	gesles: '\u2A94',
	Gfr: '\uD835\uDD0A',
	gfr: '\uD835\uDD24',
	Gg: '\u22D9',
	gg: '\u226B',
	ggg: '\u22D9',
	gimel: '\u2137',
	GJcy: '\u0403',
	gjcy: '\u0453',
	gl: '\u2277',
	gla: '\u2AA5',
	glE: '\u2A92',
	glj: '\u2AA4',
	gnap: '\u2A8A',
	gnapprox: '\u2A8A',
	gnE: '\u2269',
	gne: '\u2A88',
	gneq: '\u2A88',
	gneqq: '\u2269',
	gnsim: '\u22E7',
	Gopf: '\uD835\uDD3E',
	gopf: '\uD835\uDD58',
	grave: '\u0060',
	GreaterEqual: '\u2265',
	GreaterEqualLess: '\u22DB',
	GreaterFullEqual: '\u2267',
	GreaterGreater: '\u2AA2',
	GreaterLess: '\u2277',
	GreaterSlantEqual: '\u2A7E',
	GreaterTilde: '\u2273',
	Gscr: '\uD835\uDCA2',
	gscr: '\u210A',
	gsim: '\u2273',
	gsime: '\u2A8E',
	gsiml: '\u2A90',
	Gt: '\u226B',
	GT: '\u003E',
	gt: '\u003E',
	gtcc: '\u2AA7',
	gtcir: '\u2A7A',
	gtdot: '\u22D7',
	gtlPar: '\u2995',
	gtquest: '\u2A7C',
	gtrapprox: '\u2A86',
	gtrarr: '\u2978',
	gtrdot: '\u22D7',
	gtreqless: '\u22DB',
	gtreqqless: '\u2A8C',
	gtrless: '\u2277',
	gtrsim: '\u2273',
	gvertneqq: '\u2269\uFE00',
	gvnE: '\u2269\uFE00',
	Hacek: '\u02C7',
	hairsp: '\u200A',
	half: '\u00BD',
	hamilt: '\u210B',
	HARDcy: '\u042A',
	hardcy: '\u044A',
	hArr: '\u21D4',
	harr: '\u2194',
	harrcir: '\u2948',
	harrw: '\u21AD',
	Hat: '\u005E',
	hbar: '\u210F',
	Hcirc: '\u0124',
	hcirc: '\u0125',
	hearts: '\u2665',
	heartsuit: '\u2665',
	hellip: '\u2026',
	hercon: '\u22B9',
	Hfr: '\u210C',
	hfr: '\uD835\uDD25',
	HilbertSpace: '\u210B',
	hksearow: '\u2925',
	hkswarow: '\u2926',
	hoarr: '\u21FF',
	homtht: '\u223B',
	hookleftarrow: '\u21A9',
	hookrightarrow: '\u21AA',
	Hopf: '\u210D',
	hopf: '\uD835\uDD59',
	horbar: '\u2015',
	HorizontalLine: '\u2500',
	Hscr: '\u210B',
	hscr: '\uD835\uDCBD',
	hslash: '\u210F',
	Hstrok: '\u0126',
	hstrok: '\u0127',
	HumpDownHump: '\u224E',
	HumpEqual: '\u224F',
	hybull: '\u2043',
	hyphen: '\u2010',
	Iacute: '\u00CD',
	iacute: '\u00ED',
	ic: '\u2063',
	Icirc: '\u00CE',
	icirc: '\u00EE',
	Icy: '\u0418',
	icy: '\u0438',
	Idot: '\u0130',
	IEcy: '\u0415',
	iecy: '\u0435',
	iexcl: '\u00A1',
	iff: '\u21D4',
	Ifr: '\u2111',
	ifr: '\uD835\uDD26',
	Igrave: '\u00CC',
	igrave: '\u00EC',
	ii: '\u2148',
	iiiint: '\u2A0C',
	iiint: '\u222D',
	iinfin: '\u29DC',
	iiota: '\u2129',
	IJlig: '\u0132',
	ijlig: '\u0133',
	Im: '\u2111',
	Imacr: '\u012A',
	imacr: '\u012B',
	image: '\u2111',
	ImaginaryI: '\u2148',
	imagline: '\u2110',
	imagpart: '\u2111',
	imath: '\u0131',
	imof: '\u22B7',
	imped: '\u01B5',
	Implies: '\u21D2',
	in: '\u2208',
	incare: '\u2105',
	infin: '\u221E',
	infintie: '\u29DD',
	inodot: '\u0131',
	Int: '\u222C',
	int: '\u222B',
	intcal: '\u22BA',
	integers: '\u2124',
	Integral: '\u222B',
	intercal: '\u22BA',
	Intersection: '\u22C2',
	intlarhk: '\u2A17',
	intprod: '\u2A3C',
	InvisibleComma: '\u2063',
	InvisibleTimes: '\u2062',
	IOcy: '\u0401',
	iocy: '\u0451',
	Iogon: '\u012E',
	iogon: '\u012F',
	Iopf: '\uD835\uDD40',
	iopf: '\uD835\uDD5A',
	Iota: '\u0399',
	iota: '\u03B9',
	iprod: '\u2A3C',
	iquest: '\u00BF',
	Iscr: '\u2110',
	iscr: '\uD835\uDCBE',
	isin: '\u2208',
	isindot: '\u22F5',
	isinE: '\u22F9',
	isins: '\u22F4',
	isinsv: '\u22F3',
	isinv: '\u2208',
	it: '\u2062',
	Itilde: '\u0128',
	itilde: '\u0129',
	Iukcy: '\u0406',
	iukcy: '\u0456',
	Iuml: '\u00CF',
	iuml: '\u00EF',
	Jcirc: '\u0134',
	jcirc: '\u0135',
	Jcy: '\u0419',
	jcy: '\u0439',
	Jfr: '\uD835\uDD0D',
	jfr: '\uD835\uDD27',
	jmath: '\u0237',
	Jopf: '\uD835\uDD41',
	jopf: '\uD835\uDD5B',
	Jscr: '\uD835\uDCA5',
	jscr: '\uD835\uDCBF',
	Jsercy: '\u0408',
	jsercy: '\u0458',
	Jukcy: '\u0404',
	jukcy: '\u0454',
	Kappa: '\u039A',
	kappa: '\u03BA',
	kappav: '\u03F0',
	Kcedil: '\u0136',
	kcedil: '\u0137',
	Kcy: '\u041A',
	kcy: '\u043A',
	Kfr: '\uD835\uDD0E',
	kfr: '\uD835\uDD28',
	kgreen: '\u0138',
	KHcy: '\u0425',
	khcy: '\u0445',
	KJcy: '\u040C',
	kjcy: '\u045C',
	Kopf: '\uD835\uDD42',
	kopf: '\uD835\uDD5C',
	Kscr: '\uD835\uDCA6',
	kscr: '\uD835\uDCC0',
	lAarr: '\u21DA',
	Lacute: '\u0139',
	lacute: '\u013A',
	laemptyv: '\u29B4',
	lagran: '\u2112',
	Lambda: '\u039B',
	lambda: '\u03BB',
	Lang: '\u27EA',
	lang: '\u27E8',
	langd: '\u2991',
	langle: '\u27E8',
	lap: '\u2A85',
	Laplacetrf: '\u2112',
	laquo: '\u00AB',
	Larr: '\u219E',
	lArr: '\u21D0',
	larr: '\u2190',
	larrb: '\u21E4',
	larrbfs: '\u291F',
	larrfs: '\u291D',
	larrhk: '\u21A9',
	larrlp: '\u21AB',
	larrpl: '\u2939',
	larrsim: '\u2973',
	larrtl: '\u21A2',
	lat: '\u2AAB',
	lAtail: '\u291B',
	latail: '\u2919',
	late: '\u2AAD',
	lates: '\u2AAD\uFE00',
	lBarr: '\u290E',
	lbarr: '\u290C',
	lbbrk: '\u2772',
	lbrace: '\u007B',
	lbrack: '\u005B',
	lbrke: '\u298B',
	lbrksld: '\u298F',
	lbrkslu: '\u298D',
	Lcaron: '\u013D',
	lcaron: '\u013E',
	Lcedil: '\u013B',
	lcedil: '\u013C',
	lceil: '\u2308',
	lcub: '\u007B',
	Lcy: '\u041B',
	lcy: '\u043B',
	ldca: '\u2936',
	ldquo: '\u201C',
	ldquor: '\u201E',
	ldrdhar: '\u2967',
	ldrushar: '\u294B',
	ldsh: '\u21B2',
	lE: '\u2266',
	le: '\u2264',
	LeftAngleBracket: '\u27E8',
	LeftArrow: '\u2190',
	Leftarrow: '\u21D0',
	leftarrow: '\u2190',
	LeftArrowBar: '\u21E4',
	LeftArrowRightArrow: '\u21C6',
	leftarrowtail: '\u21A2',
	LeftCeiling: '\u2308',
	LeftDoubleBracket: '\u27E6',
	LeftDownTeeVector: '\u2961',
	LeftDownVector: '\u21C3',
	LeftDownVectorBar: '\u2959',
	LeftFloor: '\u230A',
	leftharpoondown: '\u21BD',
	leftharpoonup: '\u21BC',
	leftleftarrows: '\u21C7',
	LeftRightArrow: '\u2194',
	Leftrightarrow: '\u21D4',
	leftrightarrow: '\u2194',
	leftrightarrows: '\u21C6',
	leftrightharpoons: '\u21CB',
	leftrightsquigarrow: '\u21AD',
	LeftRightVector: '\u294E',
	LeftTee: '\u22A3',
	LeftTeeArrow: '\u21A4',
	LeftTeeVector: '\u295A',
	leftthreetimes: '\u22CB',
	LeftTriangle: '\u22B2',
	LeftTriangleBar: '\u29CF',
	LeftTriangleEqual: '\u22B4',
	LeftUpDownVector: '\u2951',
	LeftUpTeeVector: '\u2960',
	LeftUpVector: '\u21BF',
	LeftUpVectorBar: '\u2958',
	LeftVector: '\u21BC',
	LeftVectorBar: '\u2952',
	lEg: '\u2A8B',
	leg: '\u22DA',
	leq: '\u2264',
	leqq: '\u2266',
	leqslant: '\u2A7D',
	les: '\u2A7D',
	lescc: '\u2AA8',
	lesdot: '\u2A7F',
	lesdoto: '\u2A81',
	lesdotor: '\u2A83',
	lesg: '\u22DA\uFE00',
	lesges: '\u2A93',
	lessapprox: '\u2A85',
	lessdot: '\u22D6',
	lesseqgtr: '\u22DA',
	lesseqqgtr: '\u2A8B',
	LessEqualGreater: '\u22DA',
	LessFullEqual: '\u2266',
	LessGreater: '\u2276',
	lessgtr: '\u2276',
	LessLess: '\u2AA1',
	lesssim: '\u2272',
	LessSlantEqual: '\u2A7D',
	LessTilde: '\u2272',
	lfisht: '\u297C',
	lfloor: '\u230A',
	Lfr: '\uD835\uDD0F',
	lfr: '\uD835\uDD29',
	lg: '\u2276',
	lgE: '\u2A91',
	lHar: '\u2962',
	lhard: '\u21BD',
	lharu: '\u21BC',
	lharul: '\u296A',
	lhblk: '\u2584',
	LJcy: '\u0409',
	ljcy: '\u0459',
	Ll: '\u22D8',
	ll: '\u226A',
	llarr: '\u21C7',
	llcorner: '\u231E',
	Lleftarrow: '\u21DA',
	llhard: '\u296B',
	lltri: '\u25FA',
	Lmidot: '\u013F',
	lmidot: '\u0140',
	lmoust: '\u23B0',
	lmoustache: '\u23B0',
	lnap: '\u2A89',
	lnapprox: '\u2A89',
	lnE: '\u2268',
	lne: '\u2A87',
	lneq: '\u2A87',
	lneqq: '\u2268',
	lnsim: '\u22E6',
	loang: '\u27EC',
	loarr: '\u21FD',
	lobrk: '\u27E6',
	LongLeftArrow: '\u27F5',
	Longleftarrow: '\u27F8',
	longleftarrow: '\u27F5',
	LongLeftRightArrow: '\u27F7',
	Longleftrightarrow: '\u27FA',
	longleftrightarrow: '\u27F7',
	longmapsto: '\u27FC',
	LongRightArrow: '\u27F6',
	Longrightarrow: '\u27F9',
	longrightarrow: '\u27F6',
	looparrowleft: '\u21AB',
	looparrowright: '\u21AC',
	lopar: '\u2985',
	Lopf: '\uD835\uDD43',
	lopf: '\uD835\uDD5D',
	loplus: '\u2A2D',
	lotimes: '\u2A34',
	lowast: '\u2217',
	lowbar: '\u005F',
	LowerLeftArrow: '\u2199',
	LowerRightArrow: '\u2198',
	loz: '\u25CA',
	lozenge: '\u25CA',
	lozf: '\u29EB',
	lpar: '\u0028',
	lparlt: '\u2993',
	lrarr: '\u21C6',
	lrcorner: '\u231F',
	lrhar: '\u21CB',
	lrhard: '\u296D',
	lrm: '\u200E',
	lrtri: '\u22BF',
	lsaquo: '\u2039',
	Lscr: '\u2112',
	lscr: '\uD835\uDCC1',
	Lsh: '\u21B0',
	lsh: '\u21B0',
	lsim: '\u2272',
	lsime: '\u2A8D',
	lsimg: '\u2A8F',
	lsqb: '\u005B',
	lsquo: '\u2018',
	lsquor: '\u201A',
	Lstrok: '\u0141',
	lstrok: '\u0142',
	Lt: '\u226A',
	LT: '\u003C',
	lt: '\u003C',
	ltcc: '\u2AA6',
	ltcir: '\u2A79',
	ltdot: '\u22D6',
	lthree: '\u22CB',
	ltimes: '\u22C9',
	ltlarr: '\u2976',
	ltquest: '\u2A7B',
	ltri: '\u25C3',
	ltrie: '\u22B4',
	ltrif: '\u25C2',
	ltrPar: '\u2996',
	lurdshar: '\u294A',
	luruhar: '\u2966',
	lvertneqq: '\u2268\uFE00',
	lvnE: '\u2268\uFE00',
	macr: '\u00AF',
	male: '\u2642',
	malt: '\u2720',
	maltese: '\u2720',
	Map: '\u2905',
	map: '\u21A6',
	mapsto: '\u21A6',
	mapstodown: '\u21A7',
	mapstoleft: '\u21A4',
	mapstoup: '\u21A5',
	marker: '\u25AE',
	mcomma: '\u2A29',
	Mcy: '\u041C',
	mcy: '\u043C',
	mdash: '\u2014',
	mDDot: '\u223A',
	measuredangle: '\u2221',
	MediumSpace: '\u205F',
	Mellintrf: '\u2133',
	Mfr: '\uD835\uDD10',
	mfr: '\uD835\uDD2A',
	mho: '\u2127',
	micro: '\u00B5',
	mid: '\u2223',
	midast: '\u002A',
	midcir: '\u2AF0',
	middot: '\u00B7',
	minus: '\u2212',
	minusb: '\u229F',
	minusd: '\u2238',
	minusdu: '\u2A2A',
	MinusPlus: '\u2213',
	mlcp: '\u2ADB',
	mldr: '\u2026',
	mnplus: '\u2213',
	models: '\u22A7',
	Mopf: '\uD835\uDD44',
	mopf: '\uD835\uDD5E',
	mp: '\u2213',
	Mscr: '\u2133',
	mscr: '\uD835\uDCC2',
	mstpos: '\u223E',
	Mu: '\u039C',
	mu: '\u03BC',
	multimap: '\u22B8',
	mumap: '\u22B8',
	nabla: '\u2207',
	Nacute: '\u0143',
	nacute: '\u0144',
	nang: '\u2220\u20D2',
	nap: '\u2249',
	napE: '\u2A70\u0338',
	napid: '\u224B\u0338',
	napos: '\u0149',
	napprox: '\u2249',
	natur: '\u266E',
	natural: '\u266E',
	naturals: '\u2115',
	nbsp: '\u00A0',
	nbump: '\u224E\u0338',
	nbumpe: '\u224F\u0338',
	ncap: '\u2A43',
	Ncaron: '\u0147',
	ncaron: '\u0148',
	Ncedil: '\u0145',
	ncedil: '\u0146',
	ncong: '\u2247',
	ncongdot: '\u2A6D\u0338',
	ncup: '\u2A42',
	Ncy: '\u041D',
	ncy: '\u043D',
	ndash: '\u2013',
	ne: '\u2260',
	nearhk: '\u2924',
	neArr: '\u21D7',
	nearr: '\u2197',
	nearrow: '\u2197',
	nedot: '\u2250\u0338',
	NegativeMediumSpace: '\u200B',
	NegativeThickSpace: '\u200B',
	NegativeThinSpace: '\u200B',
	NegativeVeryThinSpace: '\u200B',
	nequiv: '\u2262',
	nesear: '\u2928',
	nesim: '\u2242\u0338',
	NestedGreaterGreater: '\u226B',
	NestedLessLess: '\u226A',
	NewLine: '\u000A',
	nexist: '\u2204',
	nexists: '\u2204',
	Nfr: '\uD835\uDD11',
	nfr: '\uD835\uDD2B',
	ngE: '\u2267\u0338',
	nge: '\u2271',
	ngeq: '\u2271',
	ngeqq: '\u2267\u0338',
	ngeqslant: '\u2A7E\u0338',
	nges: '\u2A7E\u0338',
	nGg: '\u22D9\u0338',
	ngsim: '\u2275',
	nGt: '\u226B\u20D2',
	ngt: '\u226F',
	ngtr: '\u226F',
	nGtv: '\u226B\u0338',
	nhArr: '\u21CE',
	nharr: '\u21AE',
	nhpar: '\u2AF2',
	ni: '\u220B',
	nis: '\u22FC',
	nisd: '\u22FA',
	niv: '\u220B',
	NJcy: '\u040A',
	njcy: '\u045A',
	nlArr: '\u21CD',
	nlarr: '\u219A',
	nldr: '\u2025',
	nlE: '\u2266\u0338',
	nle: '\u2270',
	nLeftarrow: '\u21CD',
	nleftarrow: '\u219A',
	nLeftrightarrow: '\u21CE',
	nleftrightarrow: '\u21AE',
	nleq: '\u2270',
	nleqq: '\u2266\u0338',
	nleqslant: '\u2A7D\u0338',
	nles: '\u2A7D\u0338',
	nless: '\u226E',
	nLl: '\u22D8\u0338',
	nlsim: '\u2274',
	nLt: '\u226A\u20D2',
	nlt: '\u226E',
	nltri: '\u22EA',
	nltrie: '\u22EC',
	nLtv: '\u226A\u0338',
	nmid: '\u2224',
	NoBreak: '\u2060',
	NonBreakingSpace: '\u00A0',
	Nopf: '\u2115',
	nopf: '\uD835\uDD5F',
	Not: '\u2AEC',
	not: '\u00AC',
	NotCongruent: '\u2262',
	NotCupCap: '\u226D',
	NotDoubleVerticalBar: '\u2226',
	NotElement: '\u2209',
	NotEqual: '\u2260',
	NotEqualTilde: '\u2242\u0338',
	NotExists: '\u2204',
	NotGreater: '\u226F',
	NotGreaterEqual: '\u2271',
	NotGreaterFullEqual: '\u2267\u0338',
	NotGreaterGreater: '\u226B\u0338',
	NotGreaterLess: '\u2279',
	NotGreaterSlantEqual: '\u2A7E\u0338',
	NotGreaterTilde: '\u2275',
	NotHumpDownHump: '\u224E\u0338',
	NotHumpEqual: '\u224F\u0338',
	notin: '\u2209',
	notindot: '\u22F5\u0338',
	notinE: '\u22F9\u0338',
	notinva: '\u2209',
	notinvb: '\u22F7',
	notinvc: '\u22F6',
	NotLeftTriangle: '\u22EA',
	NotLeftTriangleBar: '\u29CF\u0338',
	NotLeftTriangleEqual: '\u22EC',
	NotLess: '\u226E',
	NotLessEqual: '\u2270',
	NotLessGreater: '\u2278',
	NotLessLess: '\u226A\u0338',
	NotLessSlantEqual: '\u2A7D\u0338',
	NotLessTilde: '\u2274',
	NotNestedGreaterGreater: '\u2AA2\u0338',
	NotNestedLessLess: '\u2AA1\u0338',
	notni: '\u220C',
	notniva: '\u220C',
	notnivb: '\u22FE',
	notnivc: '\u22FD',
	NotPrecedes: '\u2280',
	NotPrecedesEqual: '\u2AAF\u0338',
	NotPrecedesSlantEqual: '\u22E0',
	NotReverseElement: '\u220C',
	NotRightTriangle: '\u22EB',
	NotRightTriangleBar: '\u29D0\u0338',
	NotRightTriangleEqual: '\u22ED',
	NotSquareSubset: '\u228F\u0338',
	NotSquareSubsetEqual: '\u22E2',
	NotSquareSuperset: '\u2290\u0338',
	NotSquareSupersetEqual: '\u22E3',
	NotSubset: '\u2282\u20D2',
	NotSubsetEqual: '\u2288',
	NotSucceeds: '\u2281',
	NotSucceedsEqual: '\u2AB0\u0338',
	NotSucceedsSlantEqual: '\u22E1',
	NotSucceedsTilde: '\u227F\u0338',
	NotSuperset: '\u2283\u20D2',
	NotSupersetEqual: '\u2289',
	NotTilde: '\u2241',
	NotTildeEqual: '\u2244',
	NotTildeFullEqual: '\u2247',
	NotTildeTilde: '\u2249',
	NotVerticalBar: '\u2224',
	npar: '\u2226',
	nparallel: '\u2226',
	nparsl: '\u2AFD\u20E5',
	npart: '\u2202\u0338',
	npolint: '\u2A14',
	npr: '\u2280',
	nprcue: '\u22E0',
	npre: '\u2AAF\u0338',
	nprec: '\u2280',
	npreceq: '\u2AAF\u0338',
	nrArr: '\u21CF',
	nrarr: '\u219B',
	nrarrc: '\u2933\u0338',
	nrarrw: '\u219D\u0338',
	nRightarrow: '\u21CF',
	nrightarrow: '\u219B',
	nrtri: '\u22EB',
	nrtrie: '\u22ED',
	nsc: '\u2281',
	nsccue: '\u22E1',
	nsce: '\u2AB0\u0338',
	Nscr: '\uD835\uDCA9',
	nscr: '\uD835\uDCC3',
	nshortmid: '\u2224',
	nshortparallel: '\u2226',
	nsim: '\u2241',
	nsime: '\u2244',
	nsimeq: '\u2244',
	nsmid: '\u2224',
	nspar: '\u2226',
	nsqsube: '\u22E2',
	nsqsupe: '\u22E3',
	nsub: '\u2284',
	nsubE: '\u2AC5\u0338',
	nsube: '\u2288',
	nsubset: '\u2282\u20D2',
	nsubseteq: '\u2288',
	nsubseteqq: '\u2AC5\u0338',
	nsucc: '\u2281',
	nsucceq: '\u2AB0\u0338',
	nsup: '\u2285',
	nsupE: '\u2AC6\u0338',
	nsupe: '\u2289',
	nsupset: '\u2283\u20D2',
	nsupseteq: '\u2289',
	nsupseteqq: '\u2AC6\u0338',
	ntgl: '\u2279',
	Ntilde: '\u00D1',
	ntilde: '\u00F1',
	ntlg: '\u2278',
	ntriangleleft: '\u22EA',
	ntrianglelefteq: '\u22EC',
	ntriangleright: '\u22EB',
	ntrianglerighteq: '\u22ED',
	Nu: '\u039D',
	nu: '\u03BD',
	num: '\u0023',
	numero: '\u2116',
	numsp: '\u2007',
	nvap: '\u224D\u20D2',
	nVDash: '\u22AF',
	nVdash: '\u22AE',
	nvDash: '\u22AD',
	nvdash: '\u22AC',
	nvge: '\u2265\u20D2',
	nvgt: '\u003E\u20D2',
	nvHarr: '\u2904',
	nvinfin: '\u29DE',
	nvlArr: '\u2902',
	nvle: '\u2264\u20D2',
	nvlt: '\u003C\u20D2',
	nvltrie: '\u22B4\u20D2',
	nvrArr: '\u2903',
	nvrtrie: '\u22B5\u20D2',
	nvsim: '\u223C\u20D2',
	nwarhk: '\u2923',
	nwArr: '\u21D6',
	nwarr: '\u2196',
	nwarrow: '\u2196',
	nwnear: '\u2927',
	Oacute: '\u00D3',
	oacute: '\u00F3',
	oast: '\u229B',
	ocir: '\u229A',
	Ocirc: '\u00D4',
	ocirc: '\u00F4',
	Ocy: '\u041E',
	ocy: '\u043E',
	odash: '\u229D',
	Odblac: '\u0150',
	odblac: '\u0151',
	odiv: '\u2A38',
	odot: '\u2299',
	odsold: '\u29BC',
	OElig: '\u0152',
	oelig: '\u0153',
	ofcir: '\u29BF',
	Ofr: '\uD835\uDD12',
	ofr: '\uD835\uDD2C',
	ogon: '\u02DB',
	Ograve: '\u00D2',
	ograve: '\u00F2',
	ogt: '\u29C1',
	ohbar: '\u29B5',
	ohm: '\u03A9',
	oint: '\u222E',
	olarr: '\u21BA',
	olcir: '\u29BE',
	olcross: '\u29BB',
	oline: '\u203E',
	olt: '\u29C0',
	Omacr: '\u014C',
	omacr: '\u014D',
	Omega: '\u03A9',
	omega: '\u03C9',
	Omicron: '\u039F',
	omicron: '\u03BF',
	omid: '\u29B6',
	ominus: '\u2296',
	Oopf: '\uD835\uDD46',
	oopf: '\uD835\uDD60',
	opar: '\u29B7',
	OpenCurlyDoubleQuote: '\u201C',
	OpenCurlyQuote: '\u2018',
	operp: '\u29B9',
	oplus: '\u2295',
	Or: '\u2A54',
	or: '\u2228',
	orarr: '\u21BB',
	ord: '\u2A5D',
	order: '\u2134',
	orderof: '\u2134',
	ordf: '\u00AA',
	ordm: '\u00BA',
	origof: '\u22B6',
	oror: '\u2A56',
	orslope: '\u2A57',
	orv: '\u2A5B',
	oS: '\u24C8',
	Oscr: '\uD835\uDCAA',
	oscr: '\u2134',
	Oslash: '\u00D8',
	oslash: '\u00F8',
	osol: '\u2298',
	Otilde: '\u00D5',
	otilde: '\u00F5',
	Otimes: '\u2A37',
	otimes: '\u2297',
	otimesas: '\u2A36',
	Ouml: '\u00D6',
	ouml: '\u00F6',
	ovbar: '\u233D',
	OverBar: '\u203E',
	OverBrace: '\u23DE',
	OverBracket: '\u23B4',
	OverParenthesis: '\u23DC',
	par: '\u2225',
	para: '\u00B6',
	parallel: '\u2225',
	parsim: '\u2AF3',
	parsl: '\u2AFD',
	part: '\u2202',
	PartialD: '\u2202',
	Pcy: '\u041F',
	pcy: '\u043F',
	percnt: '\u0025',
	period: '\u002E',
	permil: '\u2030',
	perp: '\u22A5',
	pertenk: '\u2031',
	Pfr: '\uD835\uDD13',
	pfr: '\uD835\uDD2D',
	Phi: '\u03A6',
	phi: '\u03C6',
	phiv: '\u03D5',
	phmmat: '\u2133',
	phone: '\u260E',
	Pi: '\u03A0',
	pi: '\u03C0',
	pitchfork: '\u22D4',
	piv: '\u03D6',
	planck: '\u210F',
	planckh: '\u210E',
	plankv: '\u210F',
	plus: '\u002B',
	plusacir: '\u2A23',
	plusb: '\u229E',
	pluscir: '\u2A22',
	plusdo: '\u2214',
	plusdu: '\u2A25',
	pluse: '\u2A72',
	PlusMinus: '\u00B1',
	plusmn: '\u00B1',
	plussim: '\u2A26',
	plustwo: '\u2A27',
	pm: '\u00B1',
	Poincareplane: '\u210C',
	pointint: '\u2A15',
	Popf: '\u2119',
	popf: '\uD835\uDD61',
	pound: '\u00A3',
	Pr: '\u2ABB',
	pr: '\u227A',
	prap: '\u2AB7',
	prcue: '\u227C',
	prE: '\u2AB3',
	pre: '\u2AAF',
	prec: '\u227A',
	precapprox: '\u2AB7',
	preccurlyeq: '\u227C',
	Precedes: '\u227A',
	PrecedesEqual: '\u2AAF',
	PrecedesSlantEqual: '\u227C',
	PrecedesTilde: '\u227E',
	preceq: '\u2AAF',
	precnapprox: '\u2AB9',
	precneqq: '\u2AB5',
	precnsim: '\u22E8',
	precsim: '\u227E',
	Prime: '\u2033',
	prime: '\u2032',
	primes: '\u2119',
	prnap: '\u2AB9',
	prnE: '\u2AB5',
	prnsim: '\u22E8',
	prod: '\u220F',
	Product: '\u220F',
	profalar: '\u232E',
	profline: '\u2312',
	profsurf: '\u2313',
	prop: '\u221D',
	Proportion: '\u2237',
	Proportional: '\u221D',
	propto: '\u221D',
	prsim: '\u227E',
	prurel: '\u22B0',
	Pscr: '\uD835\uDCAB',
	pscr: '\uD835\uDCC5',
	Psi: '\u03A8',
	psi: '\u03C8',
	puncsp: '\u2008',
	Qfr: '\uD835\uDD14',
	qfr: '\uD835\uDD2E',
	qint: '\u2A0C',
	Qopf: '\u211A',
	qopf: '\uD835\uDD62',
	qprime: '\u2057',
	Qscr: '\uD835\uDCAC',
	qscr: '\uD835\uDCC6',
	quaternions: '\u210D',
	quatint: '\u2A16',
	quest: '\u003F',
	questeq: '\u225F',
	QUOT: '\u0022',
	quot: '\u0022',
	rAarr: '\u21DB',
	race: '\u223D\u0331',
	Racute: '\u0154',
	racute: '\u0155',
	radic: '\u221A',
	raemptyv: '\u29B3',
	Rang: '\u27EB',
	rang: '\u27E9',
	rangd: '\u2992',
	range: '\u29A5',
	rangle: '\u27E9',
	raquo: '\u00BB',
	Rarr: '\u21A0',
	rArr: '\u21D2',
	rarr: '\u2192',
	rarrap: '\u2975',
	rarrb: '\u21E5',
	rarrbfs: '\u2920',
	rarrc: '\u2933',
	rarrfs: '\u291E',
	rarrhk: '\u21AA',
	rarrlp: '\u21AC',
	rarrpl: '\u2945',
	rarrsim: '\u2974',
	Rarrtl: '\u2916',
	rarrtl: '\u21A3',
	rarrw: '\u219D',
	rAtail: '\u291C',
	ratail: '\u291A',
	ratio: '\u2236',
	rationals: '\u211A',
	RBarr: '\u2910',
	rBarr: '\u290F',
	rbarr: '\u290D',
	rbbrk: '\u2773',
	rbrace: '\u007D',
	rbrack: '\u005D',
	rbrke: '\u298C',
	rbrksld: '\u298E',
	rbrkslu: '\u2990',
	Rcaron: '\u0158',
	rcaron: '\u0159',
	Rcedil: '\u0156',
	rcedil: '\u0157',
	rceil: '\u2309',
	rcub: '\u007D',
	Rcy: '\u0420',
	rcy: '\u0440',
	rdca: '\u2937',
	rdldhar: '\u2969',
	rdquo: '\u201D',
	rdquor: '\u201D',
	rdsh: '\u21B3',
	Re: '\u211C',
	real: '\u211C',
	realine: '\u211B',
	realpart: '\u211C',
	reals: '\u211D',
	rect: '\u25AD',
	REG: '\u00AE',
	reg: '\u00AE',
	ReverseElement: '\u220B',
	ReverseEquilibrium: '\u21CB',
	ReverseUpEquilibrium: '\u296F',
	rfisht: '\u297D',
	rfloor: '\u230B',
	Rfr: '\u211C',
	rfr: '\uD835\uDD2F',
	rHar: '\u2964',
	rhard: '\u21C1',
	rharu: '\u21C0',
	rharul: '\u296C',
	Rho: '\u03A1',
	rho: '\u03C1',
	rhov: '\u03F1',
	RightAngleBracket: '\u27E9',
	RightArrow: '\u2192',
	Rightarrow: '\u21D2',
	rightarrow: '\u2192',
	RightArrowBar: '\u21E5',
	RightArrowLeftArrow: '\u21C4',
	rightarrowtail: '\u21A3',
	RightCeiling: '\u2309',
	RightDoubleBracket: '\u27E7',
	RightDownTeeVector: '\u295D',
	RightDownVector: '\u21C2',
	RightDownVectorBar: '\u2955',
	RightFloor: '\u230B',
	rightharpoondown: '\u21C1',
	rightharpoonup: '\u21C0',
	rightleftarrows: '\u21C4',
	rightleftharpoons: '\u21CC',
	rightrightarrows: '\u21C9',
	rightsquigarrow: '\u219D',
	RightTee: '\u22A2',
	RightTeeArrow: '\u21A6',
	RightTeeVector: '\u295B',
	rightthreetimes: '\u22CC',
	RightTriangle: '\u22B3',
	RightTriangleBar: '\u29D0',
	RightTriangleEqual: '\u22B5',
	RightUpDownVector: '\u294F',
	RightUpTeeVector: '\u295C',
	RightUpVector: '\u21BE',
	RightUpVectorBar: '\u2954',
	RightVector: '\u21C0',
	RightVectorBar: '\u2953',
	ring: '\u02DA',
	risingdotseq: '\u2253',
	rlarr: '\u21C4',
	rlhar: '\u21CC',
	rlm: '\u200F',
	rmoust: '\u23B1',
	rmoustache: '\u23B1',
	rnmid: '\u2AEE',
	roang: '\u27ED',
	roarr: '\u21FE',
	robrk: '\u27E7',
	ropar: '\u2986',
	Ropf: '\u211D',
	ropf: '\uD835\uDD63',
	roplus: '\u2A2E',
	rotimes: '\u2A35',
	RoundImplies: '\u2970',
	rpar: '\u0029',
	rpargt: '\u2994',
	rppolint: '\u2A12',
	rrarr: '\u21C9',
	Rrightarrow: '\u21DB',
	rsaquo: '\u203A',
	Rscr: '\u211B',
	rscr: '\uD835\uDCC7',
	Rsh: '\u21B1',
	rsh: '\u21B1',
	rsqb: '\u005D',
	rsquo: '\u2019',
	rsquor: '\u2019',
	rthree: '\u22CC',
	rtimes: '\u22CA',
	rtri: '\u25B9',
	rtrie: '\u22B5',
	rtrif: '\u25B8',
	rtriltri: '\u29CE',
	RuleDelayed: '\u29F4',
	ruluhar: '\u2968',
	rx: '\u211E',
	Sacute: '\u015A',
	sacute: '\u015B',
	sbquo: '\u201A',
	Sc: '\u2ABC',
	sc: '\u227B',
	scap: '\u2AB8',
	Scaron: '\u0160',
	scaron: '\u0161',
	sccue: '\u227D',
	scE: '\u2AB4',
	sce: '\u2AB0',
	Scedil: '\u015E',
	scedil: '\u015F',
	Scirc: '\u015C',
	scirc: '\u015D',
	scnap: '\u2ABA',
	scnE: '\u2AB6',
	scnsim: '\u22E9',
	scpolint: '\u2A13',
	scsim: '\u227F',
	Scy: '\u0421',
	scy: '\u0441',
	sdot: '\u22C5',
	sdotb: '\u22A1',
	sdote: '\u2A66',
	searhk: '\u2925',
	seArr: '\u21D8',
	searr: '\u2198',
	searrow: '\u2198',
	sect: '\u00A7',
	semi: '\u003B',
	seswar: '\u2929',
	setminus: '\u2216',
	setmn: '\u2216',
	sext: '\u2736',
	Sfr: '\uD835\uDD16',
	sfr: '\uD835\uDD30',
	sfrown: '\u2322',
	sharp: '\u266F',
	SHCHcy: '\u0429',
	shchcy: '\u0449',
	SHcy: '\u0428',
	shcy: '\u0448',
	ShortDownArrow: '\u2193',
	ShortLeftArrow: '\u2190',
	shortmid: '\u2223',
	shortparallel: '\u2225',
	ShortRightArrow: '\u2192',
	ShortUpArrow: '\u2191',
	shy: '\u00AD',
	Sigma: '\u03A3',
	sigma: '\u03C3',
	sigmaf: '\u03C2',
	sigmav: '\u03C2',
	sim: '\u223C',
	simdot: '\u2A6A',
	sime: '\u2243',
	simeq: '\u2243',
	simg: '\u2A9E',
	simgE: '\u2AA0',
	siml: '\u2A9D',
	simlE: '\u2A9F',
	simne: '\u2246',
	simplus: '\u2A24',
	simrarr: '\u2972',
	slarr: '\u2190',
	SmallCircle: '\u2218',
	smallsetminus: '\u2216',
	smashp: '\u2A33',
	smeparsl: '\u29E4',
	smid: '\u2223',
	smile: '\u2323',
	smt: '\u2AAA',
	smte: '\u2AAC',
	smtes: '\u2AAC\uFE00',
	SOFTcy: '\u042C',
	softcy: '\u044C',
	sol: '\u002F',
	solb: '\u29C4',
	solbar: '\u233F',
	Sopf: '\uD835\uDD4A',
	sopf: '\uD835\uDD64',
	spades: '\u2660',
	spadesuit: '\u2660',
	spar: '\u2225',
	sqcap: '\u2293',
	sqcaps: '\u2293\uFE00',
	sqcup: '\u2294',
	sqcups: '\u2294\uFE00',
	Sqrt: '\u221A',
	sqsub: '\u228F',
	sqsube: '\u2291',
	sqsubset: '\u228F',
	sqsubseteq: '\u2291',
	sqsup: '\u2290',
	sqsupe: '\u2292',
	sqsupset: '\u2290',
	sqsupseteq: '\u2292',
	squ: '\u25A1',
	Square: '\u25A1',
	square: '\u25A1',
	SquareIntersection: '\u2293',
	SquareSubset: '\u228F',
	SquareSubsetEqual: '\u2291',
	SquareSuperset: '\u2290',
	SquareSupersetEqual: '\u2292',
	SquareUnion: '\u2294',
	squarf: '\u25AA',
	squf: '\u25AA',
	srarr: '\u2192',
	Sscr: '\uD835\uDCAE',
	sscr: '\uD835\uDCC8',
	ssetmn: '\u2216',
	ssmile: '\u2323',
	sstarf: '\u22C6',
	Star: '\u22C6',
	star: '\u2606',
	starf: '\u2605',
	straightepsilon: '\u03F5',
	straightphi: '\u03D5',
	strns: '\u00AF',
	Sub: '\u22D0',
	sub: '\u2282',
	subdot: '\u2ABD',
	subE: '\u2AC5',
	sube: '\u2286',
	subedot: '\u2AC3',
	submult: '\u2AC1',
	subnE: '\u2ACB',
	subne: '\u228A',
	subplus: '\u2ABF',
	subrarr: '\u2979',
	Subset: '\u22D0',
	subset: '\u2282',
	subseteq: '\u2286',
	subseteqq: '\u2AC5',
	SubsetEqual: '\u2286',
	subsetneq: '\u228A',
	subsetneqq: '\u2ACB',
	subsim: '\u2AC7',
	subsub: '\u2AD5',
	subsup: '\u2AD3',
	succ: '\u227B',
	succapprox: '\u2AB8',
	succcurlyeq: '\u227D',
	Succeeds: '\u227B',
	SucceedsEqual: '\u2AB0',
	SucceedsSlantEqual: '\u227D',
	SucceedsTilde: '\u227F',
	succeq: '\u2AB0',
	succnapprox: '\u2ABA',
	succneqq: '\u2AB6',
	succnsim: '\u22E9',
	succsim: '\u227F',
	SuchThat: '\u220B',
	Sum: '\u2211',
	sum: '\u2211',
	sung: '\u266A',
	Sup: '\u22D1',
	sup: '\u2283',
	sup1: '\u00B9',
	sup2: '\u00B2',
	sup3: '\u00B3',
	supdot: '\u2ABE',
	supdsub: '\u2AD8',
	supE: '\u2AC6',
	supe: '\u2287',
	supedot: '\u2AC4',
	Superset: '\u2283',
	SupersetEqual: '\u2287',
	suphsol: '\u27C9',
	suphsub: '\u2AD7',
	suplarr: '\u297B',
	supmult: '\u2AC2',
	supnE: '\u2ACC',
	supne: '\u228B',
	supplus: '\u2AC0',
	Supset: '\u22D1',
	supset: '\u2283',
	supseteq: '\u2287',
	supseteqq: '\u2AC6',
	supsetneq: '\u228B',
	supsetneqq: '\u2ACC',
	supsim: '\u2AC8',
	supsub: '\u2AD4',
	supsup: '\u2AD6',
	swarhk: '\u2926',
	swArr: '\u21D9',
	swarr: '\u2199',
	swarrow: '\u2199',
	swnwar: '\u292A',
	szlig: '\u00DF',
	Tab: '\u0009',
	target: '\u2316',
	Tau: '\u03A4',
	tau: '\u03C4',
	tbrk: '\u23B4',
	Tcaron: '\u0164',
	tcaron: '\u0165',
	Tcedil: '\u0162',
	tcedil: '\u0163',
	Tcy: '\u0422',
	tcy: '\u0442',
	tdot: '\u20DB',
	telrec: '\u2315',
	Tfr: '\uD835\uDD17',
	tfr: '\uD835\uDD31',
	there4: '\u2234',
	Therefore: '\u2234',
	therefore: '\u2234',
	Theta: '\u0398',
	theta: '\u03B8',
	thetasym: '\u03D1',
	thetav: '\u03D1',
	thickapprox: '\u2248',
	thicksim: '\u223C',
	ThickSpace: '\u205F\u200A',
	thinsp: '\u2009',
	ThinSpace: '\u2009',
	thkap: '\u2248',
	thksim: '\u223C',
	THORN: '\u00DE',
	thorn: '\u00FE',
	Tilde: '\u223C',
	tilde: '\u02DC',
	TildeEqual: '\u2243',
	TildeFullEqual: '\u2245',
	TildeTilde: '\u2248',
	times: '\u00D7',
	timesb: '\u22A0',
	timesbar: '\u2A31',
	timesd: '\u2A30',
	tint: '\u222D',
	toea: '\u2928',
	top: '\u22A4',
	topbot: '\u2336',
	topcir: '\u2AF1',
	Topf: '\uD835\uDD4B',
	topf: '\uD835\uDD65',
	topfork: '\u2ADA',
	tosa: '\u2929',
	tprime: '\u2034',
	TRADE: '\u2122',
	trade: '\u2122',
	triangle: '\u25B5',
	triangledown: '\u25BF',
	triangleleft: '\u25C3',
	trianglelefteq: '\u22B4',
	triangleq: '\u225C',
	triangleright: '\u25B9',
	trianglerighteq: '\u22B5',
	tridot: '\u25EC',
	trie: '\u225C',
	triminus: '\u2A3A',
	TripleDot: '\u20DB',
	triplus: '\u2A39',
	trisb: '\u29CD',
	tritime: '\u2A3B',
	trpezium: '\u23E2',
	Tscr: '\uD835\uDCAF',
	tscr: '\uD835\uDCC9',
	TScy: '\u0426',
	tscy: '\u0446',
	TSHcy: '\u040B',
	tshcy: '\u045B',
	Tstrok: '\u0166',
	tstrok: '\u0167',
	twixt: '\u226C',
	twoheadleftarrow: '\u219E',
	twoheadrightarrow: '\u21A0',
	Uacute: '\u00DA',
	uacute: '\u00FA',
	Uarr: '\u219F',
	uArr: '\u21D1',
	uarr: '\u2191',
	Uarrocir: '\u2949',
	Ubrcy: '\u040E',
	ubrcy: '\u045E',
	Ubreve: '\u016C',
	ubreve: '\u016D',
	Ucirc: '\u00DB',
	ucirc: '\u00FB',
	Ucy: '\u0423',
	ucy: '\u0443',
	udarr: '\u21C5',
	Udblac: '\u0170',
	udblac: '\u0171',
	udhar: '\u296E',
	ufisht: '\u297E',
	Ufr: '\uD835\uDD18',
	ufr: '\uD835\uDD32',
	Ugrave: '\u00D9',
	ugrave: '\u00F9',
	uHar: '\u2963',
	uharl: '\u21BF',
	uharr: '\u21BE',
	uhblk: '\u2580',
	ulcorn: '\u231C',
	ulcorner: '\u231C',
	ulcrop: '\u230F',
	ultri: '\u25F8',
	Umacr: '\u016A',
	umacr: '\u016B',
	uml: '\u00A8',
	UnderBar: '\u005F',
	UnderBrace: '\u23DF',
	UnderBracket: '\u23B5',
	UnderParenthesis: '\u23DD',
	Union: '\u22C3',
	UnionPlus: '\u228E',
	Uogon: '\u0172',
	uogon: '\u0173',
	Uopf: '\uD835\uDD4C',
	uopf: '\uD835\uDD66',
	UpArrow: '\u2191',
	Uparrow: '\u21D1',
	uparrow: '\u2191',
	UpArrowBar: '\u2912',
	UpArrowDownArrow: '\u21C5',
	UpDownArrow: '\u2195',
	Updownarrow: '\u21D5',
	updownarrow: '\u2195',
	UpEquilibrium: '\u296E',
	upharpoonleft: '\u21BF',
	upharpoonright: '\u21BE',
	uplus: '\u228E',
	UpperLeftArrow: '\u2196',
	UpperRightArrow: '\u2197',
	Upsi: '\u03D2',
	upsi: '\u03C5',
	upsih: '\u03D2',
	Upsilon: '\u03A5',
	upsilon: '\u03C5',
	UpTee: '\u22A5',
	UpTeeArrow: '\u21A5',
	upuparrows: '\u21C8',
	urcorn: '\u231D',
	urcorner: '\u231D',
	urcrop: '\u230E',
	Uring: '\u016E',
	uring: '\u016F',
	urtri: '\u25F9',
	Uscr: '\uD835\uDCB0',
	uscr: '\uD835\uDCCA',
	utdot: '\u22F0',
	Utilde: '\u0168',
	utilde: '\u0169',
	utri: '\u25B5',
	utrif: '\u25B4',
	uuarr: '\u21C8',
	Uuml: '\u00DC',
	uuml: '\u00FC',
	uwangle: '\u29A7',
	vangrt: '\u299C',
	varepsilon: '\u03F5',
	varkappa: '\u03F0',
	varnothing: '\u2205',
	varphi: '\u03D5',
	varpi: '\u03D6',
	varpropto: '\u221D',
	vArr: '\u21D5',
	varr: '\u2195',
	varrho: '\u03F1',
	varsigma: '\u03C2',
	varsubsetneq: '\u228A\uFE00',
	varsubsetneqq: '\u2ACB\uFE00',
	varsupsetneq: '\u228B\uFE00',
	varsupsetneqq: '\u2ACC\uFE00',
	vartheta: '\u03D1',
	vartriangleleft: '\u22B2',
	vartriangleright: '\u22B3',
	Vbar: '\u2AEB',
	vBar: '\u2AE8',
	vBarv: '\u2AE9',
	Vcy: '\u0412',
	vcy: '\u0432',
	VDash: '\u22AB',
	Vdash: '\u22A9',
	vDash: '\u22A8',
	vdash: '\u22A2',
	Vdashl: '\u2AE6',
	Vee: '\u22C1',
	vee: '\u2228',
	veebar: '\u22BB',
	veeeq: '\u225A',
	vellip: '\u22EE',
	Verbar: '\u2016',
	verbar: '\u007C',
	Vert: '\u2016',
	vert: '\u007C',
	VerticalBar: '\u2223',
	VerticalLine: '\u007C',
	VerticalSeparator: '\u2758',
	VerticalTilde: '\u2240',
	VeryThinSpace: '\u200A',
	Vfr: '\uD835\uDD19',
	vfr: '\uD835\uDD33',
	vltri: '\u22B2',
	vnsub: '\u2282\u20D2',
	vnsup: '\u2283\u20D2',
	Vopf: '\uD835\uDD4D',
	vopf: '\uD835\uDD67',
	vprop: '\u221D',
	vrtri: '\u22B3',
	Vscr: '\uD835\uDCB1',
	vscr: '\uD835\uDCCB',
	vsubnE: '\u2ACB\uFE00',
	vsubne: '\u228A\uFE00',
	vsupnE: '\u2ACC\uFE00',
	vsupne: '\u228B\uFE00',
	Vvdash: '\u22AA',
	vzigzag: '\u299A',
	Wcirc: '\u0174',
	wcirc: '\u0175',
	wedbar: '\u2A5F',
	Wedge: '\u22C0',
	wedge: '\u2227',
	wedgeq: '\u2259',
	weierp: '\u2118',
	Wfr: '\uD835\uDD1A',
	wfr: '\uD835\uDD34',
	Wopf: '\uD835\uDD4E',
	wopf: '\uD835\uDD68',
	wp: '\u2118',
	wr: '\u2240',
	wreath: '\u2240',
	Wscr: '\uD835\uDCB2',
	wscr: '\uD835\uDCCC',
	xcap: '\u22C2',
	xcirc: '\u25EF',
	xcup: '\u22C3',
	xdtri: '\u25BD',
	Xfr: '\uD835\uDD1B',
	xfr: '\uD835\uDD35',
	xhArr: '\u27FA',
	xharr: '\u27F7',
	Xi: '\u039E',
	xi: '\u03BE',
	xlArr: '\u27F8',
	xlarr: '\u27F5',
	xmap: '\u27FC',
	xnis: '\u22FB',
	xodot: '\u2A00',
	Xopf: '\uD835\uDD4F',
	xopf: '\uD835\uDD69',
	xoplus: '\u2A01',
	xotime: '\u2A02',
	xrArr: '\u27F9',
	xrarr: '\u27F6',
	Xscr: '\uD835\uDCB3',
	xscr: '\uD835\uDCCD',
	xsqcup: '\u2A06',
	xuplus: '\u2A04',
	xutri: '\u25B3',
	xvee: '\u22C1',
	xwedge: '\u22C0',
	Yacute: '\u00DD',
	yacute: '\u00FD',
	YAcy: '\u042F',
	yacy: '\u044F',
	Ycirc: '\u0176',
	ycirc: '\u0177',
	Ycy: '\u042B',
	ycy: '\u044B',
	yen: '\u00A5',
	Yfr: '\uD835\uDD1C',
	yfr: '\uD835\uDD36',
	YIcy: '\u0407',
	yicy: '\u0457',
	Yopf: '\uD835\uDD50',
	yopf: '\uD835\uDD6A',
	Yscr: '\uD835\uDCB4',
	yscr: '\uD835\uDCCE',
	YUcy: '\u042E',
	yucy: '\u044E',
	Yuml: '\u0178',
	yuml: '\u00FF',
	Zacute: '\u0179',
	zacute: '\u017A',
	Zcaron: '\u017D',
	zcaron: '\u017E',
	Zcy: '\u0417',
	zcy: '\u0437',
	Zdot: '\u017B',
	zdot: '\u017C',
	zeetrf: '\u2128',
	ZeroWidthSpace: '\u200B',
	Zeta: '\u0396',
	zeta: '\u03B6',
	Zfr: '\u2128',
	zfr: '\uD835\uDD37',
	ZHcy: '\u0416',
	zhcy: '\u0436',
	zigrarr: '\u21DD',
	Zopf: '\u2124',
	zopf: '\uD835\uDD6B',
	Zscr: '\uD835\uDCB5',
	zscr: '\uD835\uDCCF',
	zwj: '\u200D',
	zwnj: '\u200C',
});

/**
 * @deprecated
 * Use `HTML_ENTITIES` instead.
 * @see {@link HTML_ENTITIES}
 */
exports.entityMap = exports.HTML_ENTITIES;

},{"./conventions":2}],6:[function(require,module,exports){
'use strict';

var conventions = require('./conventions');

function extendError(constructor, writableName) {
	constructor.prototype = Object.create(Error.prototype, {
		constructor: { value: constructor },
		name: { value: constructor.name, enumerable: true, writable: writableName },
	});
}

var DOMExceptionName = conventions.freeze({
	/**
	 * the default value as defined by the spec
	 */
	Error: 'Error',
	/**
	 * @deprecated
	 * Use RangeError instead.
	 */
	IndexSizeError: 'IndexSizeError',
	/**
	 * @deprecated
	 * Just to match the related static code, not part of the spec.
	 */
	DomstringSizeError: 'DomstringSizeError',
	HierarchyRequestError: 'HierarchyRequestError',
	WrongDocumentError: 'WrongDocumentError',
	InvalidCharacterError: 'InvalidCharacterError',
	/**
	 * @deprecated
	 * Just to match the related static code, not part of the spec.
	 */
	NoDataAllowedError: 'NoDataAllowedError',
	NoModificationAllowedError: 'NoModificationAllowedError',
	NotFoundError: 'NotFoundError',
	NotSupportedError: 'NotSupportedError',
	InUseAttributeError: 'InUseAttributeError',
	InvalidStateError: 'InvalidStateError',
	SyntaxError: 'SyntaxError',
	InvalidModificationError: 'InvalidModificationError',
	NamespaceError: 'NamespaceError',
	/**
	 * @deprecated
	 * Use TypeError for invalid arguments,
	 * "NotSupportedError" DOMException for unsupported operations,
	 * and "NotAllowedError" DOMException for denied requests instead.
	 */
	InvalidAccessError: 'InvalidAccessError',
	/**
	 * @deprecated
	 * Just to match the related static code, not part of the spec.
	 */
	ValidationError: 'ValidationError',
	/**
	 * @deprecated
	 * Use TypeError instead.
	 */
	TypeMismatchError: 'TypeMismatchError',
	SecurityError: 'SecurityError',
	NetworkError: 'NetworkError',
	AbortError: 'AbortError',
	/**
	 * @deprecated
	 * Just to match the related static code, not part of the spec.
	 */
	URLMismatchError: 'URLMismatchError',
	QuotaExceededError: 'QuotaExceededError',
	TimeoutError: 'TimeoutError',
	InvalidNodeTypeError: 'InvalidNodeTypeError',
	DataCloneError: 'DataCloneError',
	EncodingError: 'EncodingError',
	NotReadableError: 'NotReadableError',
	UnknownError: 'UnknownError',
	ConstraintError: 'ConstraintError',
	DataError: 'DataError',
	TransactionInactiveError: 'TransactionInactiveError',
	ReadOnlyError: 'ReadOnlyError',
	VersionError: 'VersionError',
	OperationError: 'OperationError',
	NotAllowedError: 'NotAllowedError',
	OptOutError: 'OptOutError',
});
var DOMExceptionNames = Object.keys(DOMExceptionName);

function isValidDomExceptionCode(value) {
	return typeof value === 'number' && value >= 1 && value <= 25;
}
function endsWithError(value) {
	return typeof value === 'string' && value.substring(value.length - DOMExceptionName.Error.length) === DOMExceptionName.Error;
}
/**
 * DOM operations only raise exceptions in "exceptional" circumstances, i.e., when an operation
 * is impossible to perform (either for logical reasons, because data is lost, or because the
 * implementation has become unstable). In general, DOM methods return specific error values in
 * ordinary processing situations, such as out-of-bound errors when using NodeList.
 *
 * Implementations should raise other exceptions under other circumstances. For example,
 * implementations should raise an implementation-dependent exception if a null argument is
 * passed when null was not expected.
 *
 * This implementation supports the following usages:
 * 1. according to the living standard (both arguments are optional):
 * ```
 * new DOMException("message (can be empty)", DOMExceptionNames.HierarchyRequestError)
 * ```
 * 2. according to previous xmldom implementation (only the first argument is required):
 * ```
 * new DOMException(DOMException.HIERARCHY_REQUEST_ERR, "optional message")
 * ```
 * both result in the proper name being set.
 *
 * @class DOMException
 * @param {number | string} messageOrCode
 * The reason why an operation is not acceptable.
 * If it is a number, it is used to determine the `name`, see
 * {@link https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-258A00AF ExceptionCode}
 * @param {string | keyof typeof DOMExceptionName | Error} [nameOrMessage]
 * The `name` to use for the error.
 * If `messageOrCode` is a number, this arguments is used as the `message` instead.
 * @augments Error
 * @see https://webidl.spec.whatwg.org/#idl-DOMException
 * @see https://webidl.spec.whatwg.org/#dfn-error-names-table
 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-17189187
 * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
 * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html
 */
function DOMException(messageOrCode, nameOrMessage) {
	// support old way of passing arguments: first argument is a valid number
	if (isValidDomExceptionCode(messageOrCode)) {
		this.name = DOMExceptionNames[messageOrCode];
		this.message = nameOrMessage || '';
	} else {
		this.message = messageOrCode;
		this.name = endsWithError(nameOrMessage) ? nameOrMessage : DOMExceptionName.Error;
	}
	if (Error.captureStackTrace) Error.captureStackTrace(this, DOMException);
}
extendError(DOMException, true);
Object.defineProperties(DOMException.prototype, {
	code: {
		enumerable: true,
		get: function () {
			var code = DOMExceptionNames.indexOf(this.name);
			if (isValidDomExceptionCode(code)) return code;
			return 0;
		},
	},
});

var ExceptionCode = {
	INDEX_SIZE_ERR: 1,
	DOMSTRING_SIZE_ERR: 2,
	HIERARCHY_REQUEST_ERR: 3,
	WRONG_DOCUMENT_ERR: 4,
	INVALID_CHARACTER_ERR: 5,
	NO_DATA_ALLOWED_ERR: 6,
	NO_MODIFICATION_ALLOWED_ERR: 7,
	NOT_FOUND_ERR: 8,
	NOT_SUPPORTED_ERR: 9,
	INUSE_ATTRIBUTE_ERR: 10,
	INVALID_STATE_ERR: 11,
	SYNTAX_ERR: 12,
	INVALID_MODIFICATION_ERR: 13,
	NAMESPACE_ERR: 14,
	INVALID_ACCESS_ERR: 15,
	VALIDATION_ERR: 16,
	TYPE_MISMATCH_ERR: 17,
	SECURITY_ERR: 18,
	NETWORK_ERR: 19,
	ABORT_ERR: 20,
	URL_MISMATCH_ERR: 21,
	QUOTA_EXCEEDED_ERR: 22,
	TIMEOUT_ERR: 23,
	INVALID_NODE_TYPE_ERR: 24,
	DATA_CLONE_ERR: 25,
};

var entries = Object.entries(ExceptionCode);
for (var i = 0; i < entries.length; i++) {
	var key = entries[i][0];
	DOMException[key] = entries[i][1];
}

/**
 * Creates an error that will not be caught by XMLReader aka the SAX parser.
 *
 * @class
 * @param {string} message
 * @param {any} [locator]
 */
function ParseError(message, locator) {
	this.message = message;
	this.locator = locator;
	if (Error.captureStackTrace) Error.captureStackTrace(this, ParseError);
}
extendError(ParseError);

exports.DOMException = DOMException;
exports.DOMExceptionName = DOMExceptionName;
exports.ExceptionCode = ExceptionCode;
exports.ParseError = ParseError;

},{"./conventions":2}],7:[function(require,module,exports){
'use strict';

/**
 * Detects relevant unicode support for regular expressions in the runtime.
 * Should the runtime not accepts the flag `u` or unicode ranges,
 * character classes without unicode handling will be used.
 *
 * @param {typeof RegExp} [RegExpImpl=RegExp]
 * For testing: the RegExp class.
 * @returns {boolean}
 * @see https://node.green/#ES2015-syntax-RegExp--y--and--u--flags
 */
function detectUnicodeSupport(RegExpImpl) {
	try {
		if (typeof RegExpImpl !== 'function') {
			RegExpImpl = RegExp;
		}
		// eslint-disable-next-line es5/no-unicode-regex,es5/no-unicode-code-point-escape
		var match = new RegExpImpl('\u{1d306}', 'u').exec('𝌆');
		return !!match && match[0].length === 2;
	} catch (error) {}
	return false;
}
var UNICODE_SUPPORT = detectUnicodeSupport();

/**
 * Removes `[`, `]` and any trailing quantifiers from the source of a RegExp.
 *
 * @param {RegExp} regexp
 */
function chars(regexp) {
	if (regexp.source[0] !== '[') {
		throw new Error(regexp + ' can not be used with chars');
	}
	return regexp.source.slice(1, regexp.source.lastIndexOf(']'));
}

/**
 * Creates a new character list regular expression,
 * by removing `search` from the source of `regexp`.
 *
 * @param {RegExp} regexp
 * @param {string} search
 * The character(s) to remove.
 * @returns {RegExp}
 */
function chars_without(regexp, search) {
	if (regexp.source[0] !== '[') {
		throw new Error('/' + regexp.source + '/ can not be used with chars_without');
	}
	if (!search || typeof search !== 'string') {
		throw new Error(JSON.stringify(search) + ' is not a valid search');
	}
	if (regexp.source.indexOf(search) === -1) {
		throw new Error('"' + search + '" is not is /' + regexp.source + '/');
	}
	if (search === '-' && regexp.source.indexOf(search) !== 1) {
		throw new Error('"' + search + '" is not at the first postion of /' + regexp.source + '/');
	}
	return new RegExp(regexp.source.replace(search, ''), UNICODE_SUPPORT ? 'u' : '');
}

/**
 * Combines and Regular expressions correctly by using `RegExp.source`.
 *
 * @param {...(RegExp | string)[]} args
 * @returns {RegExp}
 */
function reg(args) {
	var self = this;
	return new RegExp(
		Array.prototype.slice
			.call(arguments)
			.map(function (part) {
				var isStr = typeof part === 'string';
				if (isStr && self === undefined && part === '|') {
					throw new Error('use regg instead of reg to wrap expressions with `|`!');
				}
				return isStr ? part : part.source;
			})
			.join(''),
		UNICODE_SUPPORT ? 'mu' : 'm'
	);
}

/**
 * Like `reg` but wraps the expression in `(?:`,`)` to create a non tracking group.
 *
 * @param {...(RegExp | string)[]} args
 * @returns {RegExp}
 */
function regg(args) {
	if (arguments.length === 0) {
		throw new Error('no parameters provided');
	}
	return reg.apply(regg, ['(?:'].concat(Array.prototype.slice.call(arguments), [')']));
}

// /**
//  * Append ^ to the beginning of the expression.
//  * @param {...(RegExp | string)[]} args
//  * @returns {RegExp}
//  */
// function reg_start(args) {
// 	if (arguments.length === 0) {
// 		throw new Error('no parameters provided');
// 	}
// 	return reg.apply(reg_start, ['^'].concat(Array.prototype.slice.call(arguments)));
// }

// https://www.w3.org/TR/xml/#document
// `[1] document ::= prolog element Misc*`
// https://www.w3.org/TR/xml11/#NT-document
// `[1] document ::= ( prolog element Misc* ) - ( Char* RestrictedChar Char* )`

/**
 * A character usually appearing in wrongly converted strings.
 *
 * @type {string}
 * @see https://en.wikipedia.org/wiki/Specials_(Unicode_block)#Replacement_character
 * @see https://nodejs.dev/en/api/v18/buffer/#buffers-and-character-encodings
 * @see https://www.unicode.org/faq/utf_bom.html#BOM
 * @readonly
 */
var UNICODE_REPLACEMENT_CHARACTER = '\uFFFD';
// https://www.w3.org/TR/xml/#NT-Char
// any Unicode character, excluding the surrogate blocks, FFFE, and FFFF.
// `[2] Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]`
// https://www.w3.org/TR/xml11/#NT-Char
// `[2] Char ::= [#x1-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]`
// https://www.w3.org/TR/xml11/#NT-RestrictedChar
// `[2a] RestrictedChar ::= [#x1-#x8] | [#xB-#xC] | [#xE-#x1F] | [#x7F-#x84] | [#x86-#x9F]`
// https://www.w3.org/TR/xml11/#charsets
var Char = /[-\x09\x0A\x0D\x20-\x2C\x2E-\uD7FF\uE000-\uFFFD]/; // without \u10000-\uEFFFF
if (UNICODE_SUPPORT) {
	// eslint-disable-next-line es5/no-unicode-code-point-escape
	Char = reg('[', chars(Char), '\\u{10000}-\\u{10FFFF}', ']');
}
// Negation of Char: matches any character that is NOT a valid XML 1.0 Char.
// Derived directly from the Char character class above (after the unicode-support extension).
// XML 1.0 Char production [2]: #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
// @see https://www.w3.org/TR/xml/#NT-Char
var InvalidChar = new RegExp('[^' + chars(Char) + ']', UNICODE_SUPPORT ? 'u' : '');

var _SChar = /[\x20\x09\x0D\x0A]/;
var SChar_s = chars(_SChar);
// https://www.w3.org/TR/xml11/#NT-S
// `[3] S ::= (#x20 | #x9 | #xD | #xA)+`
var S = reg(_SChar, '+');
// optional whitespace described as `S?` in the grammar,
// simplified to 0-n occurrences of the character class
// instead of 0-1 occurrences of a non-capturing group around S
var S_OPT = reg(_SChar, '*');

// https://www.w3.org/TR/xml11/#NT-NameStartChar
// `[4] 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]`
var NameStartChar =
	/[:_a-zA-Z\xC0-\xD6\xD8-\xF6\xF8-\u02FF\u0370-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/; // without \u10000-\uEFFFF
if (UNICODE_SUPPORT) {
	// eslint-disable-next-line es5/no-unicode-code-point-escape
	NameStartChar = reg('[', chars(NameStartChar), '\\u{10000}-\\u{10FFFF}', ']');
}
var NameStartChar_s = chars(NameStartChar);

// https://www.w3.org/TR/xml11/#NT-NameChar
// `[4a] NameChar ::= NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]`
var NameChar = reg('[', NameStartChar_s, chars(/[-.0-9\xB7]/), chars(/[\u0300-\u036F\u203F-\u2040]/), ']');
// https://www.w3.org/TR/xml11/#NT-Name
// `[5] Name ::= NameStartChar (NameChar)*`
var Name = reg(NameStartChar, NameChar, '*');
/*
https://www.w3.org/TR/xml11/#NT-Names
`[6] Names ::= Name (#x20 Name)*`
*/

// https://www.w3.org/TR/xml11/#NT-Nmtoken
// `[7] Nmtoken ::= (NameChar)+`
var Nmtoken = reg(NameChar, '+');
/*
https://www.w3.org/TR/xml11/#NT-Nmtokens
`[8] Nmtokens ::= Nmtoken (#x20 Nmtoken)*`
var Nmtokens = reg(Nmtoken, regg(/\x20/, Nmtoken), '*');
*/

// https://www.w3.org/TR/xml11/#NT-EntityRef
// `[68] EntityRef ::= '&' Name ';'` [WFC: Entity Declared] [VC: Entity Declared] [WFC: Parsed Entity] [WFC: No Recursion]
var EntityRef = reg('&', Name, ';');
// https://www.w3.org/TR/xml11/#NT-CharRef
// `[66] CharRef ::= '&#' [0-9]+ ';' | '&#x' [0-9a-fA-F]+ ';'` [WFC: Legal Character]
var CharRef = regg(/&#[0-9]+;|&#x[0-9a-fA-F]+;/);

/*
https://www.w3.org/TR/xml11/#NT-Reference
- `[67] Reference ::= EntityRef | CharRef`
- `[66] CharRef ::= '&#' [0-9]+ ';' | '&#x' [0-9a-fA-F]+ ';'` [WFC: Legal Character]
- `[68] EntityRef ::= '&' Name ';'` [WFC: Entity Declared] [VC: Entity Declared] [WFC: Parsed Entity] [WFC: No Recursion]
*/
var Reference = regg(EntityRef, '|', CharRef);

// https://www.w3.org/TR/xml11/#NT-PEReference
// `[69] PEReference ::= '%' Name ';'`
// [VC: Entity Declared] [WFC: No Recursion] [WFC: In DTD]
var PEReference = reg('%', Name, ';');

// https://www.w3.org/TR/xml11/#NT-EntityValue
// `[9] EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"' | "'" ([^%&'] | PEReference | Reference)* "'"`
var EntityValue = regg(
	reg('"', regg(/[^%&"]/, '|', PEReference, '|', Reference), '*', '"'),
	'|',
	reg("'", regg(/[^%&']/, '|', PEReference, '|', Reference), '*', "'")
);

// https://www.w3.org/TR/xml11/#NT-AttValue
// `[10] AttValue ::= '"' ([^<&"] | Reference)* '"' | "'" ([^<&'] | Reference)* "'"`
var AttValue = regg('"', regg(/[^<&"]/, '|', Reference), '*', '"', '|', "'", regg(/[^<&']/, '|', Reference), '*', "'");

// https://www.w3.org/TR/xml-names/#ns-decl
// https://www.w3.org/TR/xml-names/#ns-qualnames
// NameStartChar without ":"
var NCNameStartChar = chars_without(NameStartChar, ':');
// https://www.w3.org/TR/xml-names/#orphans
// `[5] NCNameChar ::= NameChar - ':'`
// An XML NameChar, minus the ":"
var NCNameChar = chars_without(NameChar, ':');
// https://www.w3.org/TR/xml-names/#NT-NCName
// `[4] NCName ::= Name - (Char* ':' Char*)`
// An XML Name, minus the ":"
var NCName = reg(NCNameStartChar, NCNameChar, '*');

/**
https://www.w3.org/TR/xml-names/#ns-qualnames

```
[7] QName ::= PrefixedName | UnprefixedName
				  === (NCName ':' NCName) | NCName
				  === NCName (':' NCName)?
[8] PrefixedName ::= Prefix ':' LocalPart
								 === NCName ':' NCName
[9] UnprefixedName ::= LocalPart
									 === NCName
[10] Prefix ::= NCName
[11] LocalPart ::= NCName
```
*/
var QName = reg(NCName, regg(':', NCName), '?');
var QName_exact = reg('^', QName, '$');
var QName_group = reg('(', QName, ')');

// https://www.w3.org/TR/xml11/#NT-SystemLiteral
// `[11] SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'")`
var SystemLiteral = regg(/"[^"]*"|'[^']*'/);

/*
 https://www.w3.org/TR/xml11/#NT-PI
 ```
 [17] PITarget    ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
 [16] PI    ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
 ```
 target /xml/i is not excluded!
*/
var PI = reg(/^<\?/, '(', Name, ')', regg(S, '(', Char, '*?)'), '?', /\?>/);

// https://www.w3.org/TR/xml11/#NT-PubidChar
// `[13] PubidChar ::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]`
var PubidChar = /[\x20\x0D\x0Aa-zA-Z0-9-'()+,./:=?;!*#@$_%]/;

// https://www.w3.org/TR/xml11/#NT-PubidLiteral
// `[12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"`
var PubidLiteral = regg('"', PubidChar, '*"', '|', "'", chars_without(PubidChar, "'"), "*'");

// https://www.w3.org/TR/xml11/#NT-CharData
// `[14] CharData    ::= [^<&]* - ([^<&]* ']]>' [^<&]*)`

var COMMENT_START = '<!--';
var COMMENT_END = '-->';
// https://www.w3.org/TR/xml11/#NT-Comment
// `[15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'`
var Comment = reg(COMMENT_START, regg(chars_without(Char, '-'), '|', reg('-', chars_without(Char, '-'))), '*', COMMENT_END);

var PCDATA = '#PCDATA';
// https://www.w3.org/TR/xml11/#NT-Mixed
// `[51] Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*' | '(' S? '#PCDATA' S? ')'`
// https://www.w3.org/TR/xml-names/#NT-Mixed
// `[51] Mixed ::= '(' S? '#PCDATA' (S? '|' S? QName)* S? ')*' | '(' S? '#PCDATA' S? ')'`
// [VC: Proper Group/PE Nesting] [VC: No Duplicate Types]
var Mixed = regg(
	reg(/\(/, S_OPT, PCDATA, regg(S_OPT, /\|/, S_OPT, QName), '*', S_OPT, /\)\*/),
	'|',
	reg(/\(/, S_OPT, PCDATA, S_OPT, /\)/)
);

var _children_quantity = /[?*+]?/;
/*
 `[49] choice ::= '(' S? cp ( S? '|' S? cp )+ S? ')'` [VC: Proper Group/PE Nesting]
 `[50] seq ::= '(' S? cp ( S? ',' S? cp )* S? ')'` [VC: Proper Group/PE Nesting]
 simplification to solve circular referencing, but doesn't check validity constraint "Proper Group/PE Nesting"
 var _choice_or_seq = reg('[', NameChar_s, SChar_s, chars(_children_quantity), '()|,]*');
 ```
 [48] cp ::= (Name | choice | seq) ('?' | '*' | '+')?
         === (Name | '(' S? cp ( S? '|' S? cp )+ S? ')' | '(' S? cp ( S? ',' S? cp )* S? ')') ('?' | '*' | '+')?
         !== (Name | [_choice_or_seq]*) ('?' | '*' | '+')?
 ```
 simplification to solve circular referencing, but doesn't check validity constraint "Proper Group/PE Nesting"
 var cp = reg(regg(Name, '|', _choice_or_seq), _children_quantity);
*/
/*
Inefficient regular expression (High)
This part of the regular expression may cause exponential backtracking on strings starting with '(|' and containing many repetitions of '|'.
https://github.com/xmldom/xmldom/security/code-scanning/91
var choice = regg(/\(/, S_OPT, cp, regg(S_OPT, /\|/, S_OPT, cp), '+', S_OPT, /\)/);
*/
/*
Inefficient regular expression (High)
This part of the regular expression may cause exponential backtracking on strings starting with '(,' and containing many repetitions of ','.
https://github.com/xmldom/xmldom/security/code-scanning/92
var seq = regg(/\(/, S_OPT, cp, regg(S_OPT, /,/, S_OPT, cp), '*', S_OPT, /\)/);
*/

// `[47] children ::= (choice | seq) ('?' | '*' | '+')?`
// simplification to solve circular referencing, but doesn't check validity constraint "Proper Group/PE Nesting"
var children = reg(/\([^>]+\)/, _children_quantity /*regg(choice, '|', seq), _children_quantity*/);

// https://www.w3.org/TR/xml11/#NT-contentspec
// `[46] contentspec ::= 'EMPTY' | 'ANY' | Mixed | children`
var contentspec = regg('EMPTY', '|', 'ANY', '|', Mixed, '|', children);

var ELEMENTDECL_START = '<!ELEMENT';
// https://www.w3.org/TR/xml11/#NT-elementdecl
// `[45] elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'`
// https://www.w3.org/TR/xml-names/#NT-elementdecl
// `[17] elementdecl ::= '<!ELEMENT' S QName S contentspec S? '>'`
// because of https://www.w3.org/TR/xml11/#NT-PEReference
// since xmldom is not supporting replacements of PEReferences in the DTD
// this also supports PEReference in the possible places
var elementdecl = reg(ELEMENTDECL_START, S, regg(QName, '|', PEReference), S, regg(contentspec, '|', PEReference), S_OPT, '>');

// https://www.w3.org/TR/xml11/#NT-NotationType
// `[58] NotationType ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'`
// [VC: Notation Attributes] [VC: One Notation Per Element Type] [VC: No Notation on Empty Element] [VC: No Duplicate Tokens]
var NotationType = reg('NOTATION', S, /\(/, S_OPT, Name, regg(S_OPT, /\|/, S_OPT, Name), '*', S_OPT, /\)/);
// https://www.w3.org/TR/xml11/#NT-Enumeration
// `[59] Enumeration ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'`
// [VC: Enumeration] [VC: No Duplicate Tokens]
var Enumeration = reg(/\(/, S_OPT, Nmtoken, regg(S_OPT, /\|/, S_OPT, Nmtoken), '*', S_OPT, /\)/);

// https://www.w3.org/TR/xml11/#NT-EnumeratedType
// `[57] EnumeratedType ::= NotationType | Enumeration`
var EnumeratedType = regg(NotationType, '|', Enumeration);

/*
```
[55] StringType ::= 'CDATA'
[56] TokenizedType ::= 'ID' [VC: ID] [VC: One ID per Element Type] [VC: ID Attribute Default]
   | 'IDREF' [VC: IDREF]
   | 'IDREFS' [VC: IDREF]
	 | 'ENTITY' [VC: Entity Name]
	 | 'ENTITIES' [VC: Entity Name]
	 | 'NMTOKEN' [VC: Name Token]
	 | 'NMTOKENS' [VC: Name Token]
 [54] AttType ::= StringType | TokenizedType | EnumeratedType
```*/
var AttType = regg(/CDATA|ID|IDREF|IDREFS|ENTITY|ENTITIES|NMTOKEN|NMTOKENS/, '|', EnumeratedType);

// `[60] DefaultDecl ::= '#REQUIRED' | '#IMPLIED' | (('#FIXED' S)? AttValue)`
// [WFC: No < in Attribute Values] [WFC: No External Entity References]
// [VC: Fixed Attribute Default] [VC: Required Attribute] [VC: Attribute Default Value Syntactically Correct]
var DefaultDecl = regg(/#REQUIRED|#IMPLIED/, '|', regg(regg('#FIXED', S), '?', AttValue));

// https://www.w3.org/TR/xml11/#NT-AttDef
// [53] AttDef ::= S Name S AttType S DefaultDecl
// https://www.w3.org/TR/xml-names/#NT-AttDef
// [1] NSAttName ::= PrefixedAttName | DefaultAttName
// [2] PrefixedAttName ::= 'xmlns:' NCName [NSC: Reserved Prefixes and Namespace Names]
// [3] DefaultAttName ::= 'xmlns'
// [21] AttDef ::= S (QName | NSAttName) S AttType S DefaultDecl
// 						 === S Name S AttType S DefaultDecl
// xmldom is not distinguishing between QName and NSAttName on this level
// to support XML without namespaces in DTD we can not restrict it to QName
var AttDef = regg(S, Name, S, AttType, S, DefaultDecl);

var ATTLIST_DECL_START = '<!ATTLIST';
// https://www.w3.org/TR/xml11/#NT-AttlistDecl
// `[52] AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'`
// https://www.w3.org/TR/xml-names/#NT-AttlistDecl
// `[20] AttlistDecl ::= '<!ATTLIST' S QName AttDef* S? '>'`
// to support XML without namespaces in DTD we can not restrict it to QName
var AttlistDecl = reg(ATTLIST_DECL_START, S, Name, AttDef, '*', S_OPT, '>');

// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#about:legacy-compat
var ABOUT_LEGACY_COMPAT = 'about:legacy-compat';
var ABOUT_LEGACY_COMPAT_SystemLiteral = regg('"' + ABOUT_LEGACY_COMPAT + '"', '|', "'" + ABOUT_LEGACY_COMPAT + "'");
var SYSTEM = 'SYSTEM';
var PUBLIC = 'PUBLIC';
// https://www.w3.org/TR/xml11/#NT-ExternalID
// `[75] ExternalID ::= 'SYSTEM' S SystemLiteral | 'PUBLIC' S PubidLiteral S SystemLiteral`
var ExternalID = regg(regg(SYSTEM, S, SystemLiteral), '|', regg(PUBLIC, S, PubidLiteral, S, SystemLiteral));
var ExternalID_match = reg(
	'^',
	regg(
		regg(SYSTEM, S, '(?<SystemLiteralOnly>', SystemLiteral, ')'),
		'|',
		regg(PUBLIC, S, '(?<PubidLiteral>', PubidLiteral, ')', S, '(?<SystemLiteral>', SystemLiteral, ')')
	)
);
// Full-string anchored matcher for requireWellFormed serializer checks
// https://w3c.github.io/DOM-Parsing/#xml-serializing-a-document-node
var PubidLiteral_match = reg('^', PubidLiteral, '$');
// Full-string anchored matcher for requireWellFormed serializer checks
// https://w3c.github.io/DOM-Parsing/#xml-serializing-a-document-node
var SystemLiteral_match = reg('^', SystemLiteral, '$');

// https://www.w3.org/TR/xml11/#NT-NDataDecl
// `[76] NDataDecl ::= S 'NDATA' S Name` [VC: Notation Declared]
var NDataDecl = regg(S, 'NDATA', S, Name);

// https://www.w3.org/TR/xml11/#NT-EntityDef
// `[73] EntityDef ::= EntityValue | (ExternalID NDataDecl?)`
var EntityDef = regg(EntityValue, '|', regg(ExternalID, NDataDecl, '?'));

var ENTITY_DECL_START = '<!ENTITY';
// https://www.w3.org/TR/xml11/#NT-GEDecl
// `[71] GEDecl ::= '<!ENTITY' S Name S EntityDef S? '>'`
var GEDecl = reg(ENTITY_DECL_START, S, Name, S, EntityDef, S_OPT, '>');
// https://www.w3.org/TR/xml11/#NT-PEDef
// `[74] PEDef ::= EntityValue | ExternalID`
var PEDef = regg(EntityValue, '|', ExternalID);
// https://www.w3.org/TR/xml11/#NT-PEDecl
// `[72] PEDecl ::= '<!ENTITY' S '%' S Name S PEDef S? '>'`
var PEDecl = reg(ENTITY_DECL_START, S, '%', S, Name, S, PEDef, S_OPT, '>');
// https://www.w3.org/TR/xml11/#NT-EntityDecl
// `[70] EntityDecl ::= GEDecl | PEDecl`
var EntityDecl = regg(GEDecl, '|', PEDecl);

// https://www.w3.org/TR/xml11/#NT-PublicID
// `[83] PublicID    ::= 'PUBLIC' S PubidLiteral`
var PublicID = reg(PUBLIC, S, PubidLiteral);
// https://www.w3.org/TR/xml11/#NT-NotationDecl
// `[82] NotationDecl    ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'` [VC: Unique Notation Name]
var NotationDecl = reg('<!NOTATION', S, Name, S, regg(ExternalID, '|', PublicID), S_OPT, '>');

// https://www.w3.org/TR/xml11/#NT-Eq
// `[25] Eq ::= S? '=' S?`
var Eq = reg(S_OPT, '=', S_OPT);
// https://www.w3.org/TR/xml/#NT-VersionNum
// `[26] VersionNum ::= '1.' [0-9]+`
// https://www.w3.org/TR/xml11/#NT-VersionNum
// `[26] VersionNum ::= '1.1'`
var VersionNum = /1[.]\d+/;
// https://www.w3.org/TR/xml11/#NT-VersionInfo
// `[24] VersionInfo ::= S 'version' Eq ("'" VersionNum "'" | '"' VersionNum '"')`
var VersionInfo = reg(S, 'version', Eq, regg("'", VersionNum, "'", '|', '"', VersionNum, '"'));
// https://www.w3.org/TR/xml11/#NT-EncName
// `[81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*`
var EncName = /[A-Za-z][-A-Za-z0-9._]*/;
// https://www.w3.org/TR/xml11/#NT-EncDecl
// `[80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'" )`
var EncodingDecl = regg(S, 'encoding', Eq, regg('"', EncName, '"', '|', "'", EncName, "'"));
// https://www.w3.org/TR/xml11/#NT-SDDecl
// `[32] SDDecl ::= S 'standalone' Eq (("'" ('yes' | 'no') "'") | ('"' ('yes' | 'no') '"'))`
var SDDecl = regg(S, 'standalone', Eq, regg("'", regg('yes', '|', 'no'), "'", '|', '"', regg('yes', '|', 'no'), '"'));
// https://www.w3.org/TR/xml11/#NT-XMLDecl
// [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'
var XMLDecl = reg(/^<\?xml/, VersionInfo, EncodingDecl, '?', SDDecl, '?', S_OPT, /\?>/);

/*
 https://www.w3.org/TR/xml/#NT-markupdecl
 https://www.w3.org/TR/xml11/#NT-markupdecl
 `[29] markupdecl ::= elementdecl | AttlistDecl | EntityDecl | NotationDecl | PI | Comment`
 var markupdecl = regg(elementdecl, '|', AttlistDecl, '|', EntityDecl, '|', NotationDecl, '|', PI_unsafe, '|', Comment);
*/
/*
 https://www.w3.org/TR/xml-names/#NT-doctypedecl
`[28a] DeclSep   ::= PEReference | S`
 https://www.w3.org/TR/xml11/#NT-intSubset
```
 [28b] intSubset ::= (markupdecl | DeclSep)*
                 === (markupdecl | PEReference | S)*
```
 [WFC: PE Between Declarations]
 var intSubset = reg(regg(markupdecl, '|', PEReference, '|', S), '*');
*/
var DOCTYPE_DECL_START = '<!DOCTYPE';
/*
 https://www.w3.org/TR/xml11/#NT-doctypedecl
 `[28] doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S? ('[' intSubset ']' S?)? '>'`
 https://www.afterwardsw3.org/TR/xml-names/#NT-doctypedecl
 `[16] doctypedecl ::= '<!DOCTYPE' S QName (S ExternalID)? S? ('[' (markupdecl | PEReference | S)* ']' S?)? '>'`
 var doctypedecl = reg('<!DOCTYPE', S, Name, regg(S, ExternalID), '?', S_OPT, regg(/\[/, intSubset, /]/, S_OPT), '?', '>');
*/

var CDATA_START = '<![CDATA[';
var CDATA_END = ']]>';
var CDStart = /<!\[CDATA\[/;
var CDEnd = /\]\]>/;
var CData = reg(Char, '*?', CDEnd);
/*
 https://www.w3.org/TR/xml/#dt-cdsection
 `[18]   	CDSect	   ::=   	CDStart CData CDEnd`
 `[19]   	CDStart	   ::=   	'<![CDATA['`
 `[20]   	CData	   ::=   	(Char* - (Char* ']]>' Char*))`
 `[21]   	CDEnd	   ::=   	']]>'`
*/
var CDSect = reg(CDStart, CData);

// unit tested
exports.chars = chars;
exports.chars_without = chars_without;
exports.detectUnicodeSupport = detectUnicodeSupport;
exports.reg = reg;
exports.regg = regg;
exports.ABOUT_LEGACY_COMPAT = ABOUT_LEGACY_COMPAT;
exports.ABOUT_LEGACY_COMPAT_SystemLiteral = ABOUT_LEGACY_COMPAT_SystemLiteral;
exports.AttlistDecl = AttlistDecl;
exports.CDATA_START = CDATA_START;
exports.CDATA_END = CDATA_END;
exports.CDSect = CDSect;
exports.Char = Char;
exports.Comment = Comment;
exports.COMMENT_START = COMMENT_START;
exports.COMMENT_END = COMMENT_END;
exports.DOCTYPE_DECL_START = DOCTYPE_DECL_START;
exports.elementdecl = elementdecl;
exports.EntityDecl = EntityDecl;
exports.EntityValue = EntityValue;
exports.ExternalID = ExternalID;
exports.ExternalID_match = ExternalID_match;
exports.Name = Name;
exports.NotationDecl = NotationDecl;
exports.Reference = Reference;
exports.PEReference = PEReference;
exports.PI = PI;
exports.PUBLIC = PUBLIC;
exports.PubidLiteral = PubidLiteral;
exports.PubidLiteral_match = PubidLiteral_match;
exports.QName = QName;
exports.QName_exact = QName_exact;
exports.QName_group = QName_group;
exports.S = S;
exports.SChar_s = SChar_s;
exports.S_OPT = S_OPT;
exports.SYSTEM = SYSTEM;
exports.SystemLiteral = SystemLiteral;
exports.SystemLiteral_match = SystemLiteral_match;
exports.InvalidChar = InvalidChar;
exports.UNICODE_REPLACEMENT_CHARACTER = UNICODE_REPLACEMENT_CHARACTER;
exports.UNICODE_SUPPORT = UNICODE_SUPPORT;
exports.XMLDecl = XMLDecl;

},{}],8:[function(require,module,exports){
'use strict';
var conventions = require('./conventions');
exports.assign = conventions.assign;
exports.hasDefaultHTMLNamespace = conventions.hasDefaultHTMLNamespace;
exports.isHTMLMimeType = conventions.isHTMLMimeType;
exports.isValidMimeType = conventions.isValidMimeType;
exports.MIME_TYPE = conventions.MIME_TYPE;
exports.NAMESPACE = conventions.NAMESPACE;

var errors = require('./errors');
exports.DOMException = errors.DOMException;
exports.DOMExceptionName = errors.DOMExceptionName;
exports.ExceptionCode = errors.ExceptionCode;
exports.ParseError = errors.ParseError;

var dom = require('./dom');
exports.Attr = dom.Attr;
exports.CDATASection = dom.CDATASection;
exports.CharacterData = dom.CharacterData;
exports.Comment = dom.Comment;
exports.Document = dom.Document;
exports.DocumentFragment = dom.DocumentFragment;
exports.DocumentType = dom.DocumentType;
exports.DOMImplementation = dom.DOMImplementation;
exports.Element = dom.Element;
exports.Entity = dom.Entity;
exports.EntityReference = dom.EntityReference;
exports.LiveNodeList = dom.LiveNodeList;
exports.NamedNodeMap = dom.NamedNodeMap;
exports.Node = dom.Node;
exports.NodeList = dom.NodeList;
exports.Notation = dom.Notation;
exports.ProcessingInstruction = dom.ProcessingInstruction;
exports.Text = dom.Text;
exports.XMLSerializer = dom.XMLSerializer;

var domParser = require('./dom-parser');
exports.DOMParser = domParser.DOMParser;
exports.normalizeLineEndings = domParser.normalizeLineEndings;
exports.onErrorStopParsing = domParser.onErrorStopParsing;
exports.onWarningStopParsing = domParser.onWarningStopParsing;

},{"./conventions":2,"./dom":4,"./dom-parser":3,"./errors":6}],9:[function(require,module,exports){
'use strict';

var conventions = require('./conventions');
var g = require('./grammar');
var errors = require('./errors');

var isHTMLEscapableRawTextElement = conventions.isHTMLEscapableRawTextElement;
var isHTMLMimeType = conventions.isHTMLMimeType;
var isHTMLRawTextElement = conventions.isHTMLRawTextElement;
var hasOwn = conventions.hasOwn;
var NAMESPACE = conventions.NAMESPACE;
var ParseError = errors.ParseError;
var DOMException = errors.DOMException;

//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')

//S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
//S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
var S_TAG = 0; //tag name offerring
var S_ATTR = 1; //attr name offerring
var S_ATTR_SPACE = 2; //attr name end and space offer
var S_EQ = 3; //=space?
var S_ATTR_NOQUOT_VALUE = 4; //attr value(no quot value only)
var S_ATTR_END = 5; //attr value end and no space(quot end)
var S_TAG_SPACE = 6; //(attr value end || tag end ) && (space offer)
var S_TAG_CLOSE = 7; //closed el<el />

function XMLReader() {}

XMLReader.prototype = {
	parse: function (source, defaultNSMap, entityMap) {
		var domBuilder = this.domBuilder;
		domBuilder.startDocument();
		_copy(defaultNSMap, (defaultNSMap = Object.create(null)));
		parse(source, defaultNSMap, entityMap, domBuilder, this.errorHandler);
		domBuilder.endDocument();
	},
};

/**
 * Detecting everything that might be a reference,
 * including those without ending `;`, since those are allowed in HTML.
 * The entityReplacer takes care of verifying and transforming each occurrence,
 * and reports to the errorHandler on those that are not OK,
 * depending on the context.
 */
var ENTITY_REG = /&#?\w+;?/g;

function parse(source, defaultNSMapCopy, entityMap, domBuilder, errorHandler) {
	var isHTML = isHTMLMimeType(domBuilder.mimeType);
	if (source.indexOf(g.UNICODE_REPLACEMENT_CHARACTER) >= 0) {
		errorHandler.warning('Unicode replacement character detected, source encoding issues?');
	}

	function fixedFromCharCode(code) {
		// String.prototype.fromCharCode does not supports
		// > 2 bytes unicode chars directly
		if (code > 0xffff) {
			code -= 0x10000;
			var surrogate1 = 0xd800 + (code >> 10),
				surrogate2 = 0xdc00 + (code & 0x3ff);

			return String.fromCharCode(surrogate1, surrogate2);
		} else {
			return String.fromCharCode(code);
		}
	}

	function entityReplacer(a) {
		var complete = a[a.length - 1] === ';' ? a : a + ';';
		if (!isHTML && complete !== a) {
			errorHandler.error('EntityRef: expecting ;');
			return a;
		}
		var match = g.Reference.exec(complete);
		if (!match || match[0].length !== complete.length) {
			errorHandler.error('entity not matching Reference production: ' + a);
			return a;
		}
		var k = complete.slice(1, -1);
		if (hasOwn(entityMap, k)) {
			return entityMap[k];
		} else if (k.charAt(0) === '#') {
			return fixedFromCharCode(parseInt(k.substring(1).replace('x', '0x')));
		} else {
			errorHandler.error('entity not found:' + a);
			return a;
		}
	}

	function appendText(end) {
		//has some bugs
		if (end > start) {
			var xt = source.substring(start, end).replace(ENTITY_REG, entityReplacer);
			locator && position(start);
			domBuilder.characters(xt, 0, end - start);
			start = end;
		}
	}

	var lineStart = 0;
	var lineEnd = 0;
	var linePattern = /\r\n?|\n|$/g;
	var locator = domBuilder.locator;

	function position(p, m) {
		while (p >= lineEnd && (m = linePattern.exec(source))) {
			lineStart = lineEnd;
			lineEnd = m.index + m[0].length;
			locator.lineNumber++;
		}
		locator.columnNumber = p - lineStart + 1;
	}

	var parseStack = [{ currentNSMap: defaultNSMapCopy }];
	var unclosedTags = [];
	var start = 0;
	while (true) {
		try {
			var tagStart = source.indexOf('<', start);
			if (tagStart < 0) {
				if (!isHTML && unclosedTags.length > 0) {
					return errorHandler.fatalError('unclosed xml tag(s): ' + unclosedTags.join(', '));
				}
				if (!source.substring(start).match(/^\s*$/)) {
					var doc = domBuilder.doc;
					var text = doc.createTextNode(source.substring(start));
					if (doc.documentElement) {
						return errorHandler.error('Extra content at the end of the document');
					}
					doc.appendChild(text);
					domBuilder.currentElement = text;
				}
				return;
			}
			if (tagStart > start) {
				var fromSource = source.substring(start, tagStart);
				if (!isHTML && unclosedTags.length === 0) {
					fromSource = fromSource.replace(new RegExp(g.S_OPT.source, 'g'), '');
					fromSource && errorHandler.error("Unexpected content outside root element: '" + fromSource + "'");
				}
				appendText(tagStart);
			}
			switch (source.charAt(tagStart + 1)) {
				case '/':
					var end = source.indexOf('>', tagStart + 2);
					var tagNameRaw = source.substring(tagStart + 2, end > 0 ? end : undefined);
					if (!tagNameRaw) {
						return errorHandler.fatalError('end tag name missing');
					}
					var tagNameMatch = end > 0 && g.reg('^', g.QName_group, g.S_OPT, '$').exec(tagNameRaw);
					if (!tagNameMatch) {
						return errorHandler.fatalError('end tag name contains invalid characters: "' + tagNameRaw + '"');
					}
					if (!domBuilder.currentElement && !domBuilder.doc.documentElement) {
						// not enough information to provide a helpful error message,
						// but parsing will throw since there is no root element
						return;
					}
					var currentTagName =
						unclosedTags[unclosedTags.length - 1] ||
						domBuilder.currentElement.tagName ||
						domBuilder.doc.documentElement.tagName ||
						'';
					if (currentTagName !== tagNameMatch[1]) {
						var tagNameLower = tagNameMatch[1].toLowerCase();
						if (!isHTML || currentTagName.toLowerCase() !== tagNameLower) {
							return errorHandler.fatalError('Opening and ending tag mismatch: "' + currentTagName + '" != "' + tagNameRaw + '"');
						}
					}
					var config = parseStack.pop();
					unclosedTags.pop();
					var localNSMap = config.localNSMap;
					domBuilder.endElement(config.uri, config.localName, currentTagName);
					if (localNSMap) {
						for (var prefix in localNSMap) {
							if (hasOwn(localNSMap, prefix)) {
								domBuilder.endPrefixMapping(prefix);
							}
						}
					}

					end++;
					break;
				// end element
				case '?': // <?...?>
					locator && position(tagStart);
					end = parseProcessingInstruction(source, tagStart, domBuilder, errorHandler);
					break;
				case '!': // <!doctype,<![CDATA,<!--
					locator && position(tagStart);
					end = parseDoctypeCommentOrCData(source, tagStart, domBuilder, errorHandler, isHTML);
					break;
				default:
					locator && position(tagStart);
					var el = new ElementAttributes();
					var currentNSMap = parseStack[parseStack.length - 1].currentNSMap;
					//elStartEnd
					var end = parseElementStartPart(source, tagStart, el, currentNSMap, entityReplacer, errorHandler, isHTML);
					var len = el.length;

					if (!el.closed) {
						if (isHTML && conventions.isHTMLVoidElement(el.tagName)) {
							el.closed = true;
						} else {
							unclosedTags.push(el.tagName);
						}
					}
					if (locator && len) {
						var locator2 = copyLocator(locator, {});
						//try{//attribute position fixed
						for (var i = 0; i < len; i++) {
							var a = el[i];
							position(a.offset);
							a.locator = copyLocator(locator, {});
						}
						domBuilder.locator = locator2;
						if (appendElement(el, domBuilder, currentNSMap)) {
							parseStack.push(el);
						}
						domBuilder.locator = locator;
					} else {
						if (appendElement(el, domBuilder, currentNSMap)) {
							parseStack.push(el);
						}
					}

					if (isHTML && !el.closed) {
						end = parseHtmlSpecialContent(source, end, el.tagName, entityReplacer, domBuilder);
					} else {
						end++;
					}
			}
		} catch (e) {
			if (e instanceof ParseError) {
				throw e;
			} else if (e instanceof DOMException) {
				throw new ParseError(e.name + ': ' + e.message, domBuilder.locator, e);
			}
			errorHandler.error('element parse error: ' + e);
			end = -1;
		}
		if (end > start) {
			start = end;
		} else {
			//Possible sax fallback here, risk of positional error
			appendText(Math.max(tagStart, start) + 1);
		}
	}
}

function copyLocator(f, t) {
	t.lineNumber = f.lineNumber;
	t.columnNumber = f.columnNumber;
	return t;
}

/**
 * @returns
 * end of the elementStartPart(end of elementEndPart for selfClosed el)
 * @see {@link #appendElement}
 */
function parseElementStartPart(source, start, el, currentNSMap, entityReplacer, errorHandler, isHTML) {
	/**
	 * @param {string} qname
	 * @param {string} value
	 * @param {number} startIndex
	 */
	function addAttribute(qname, value, startIndex) {
		if (hasOwn(el.attributeNames, qname)) {
			return errorHandler.fatalError('Attribute ' + qname + ' redefined');
		}
		if (!isHTML && value.indexOf('<') >= 0) {
			return errorHandler.fatalError("Unescaped '<' not allowed in attributes values");
		}
		el.addValue(
			qname,
			// @see https://www.w3.org/TR/xml/#AVNormalize
			// since the xmldom sax parser does not "interpret" DTD the following is not implemented:
			// - recursive replacement of (DTD) entity references
			// - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA
			value.replace(/[\t\n\r]/g, ' ').replace(ENTITY_REG, entityReplacer),
			startIndex
		);
	}

	var attrName;
	var value;
	var p = ++start;
	var s = S_TAG; //status
	while (true) {
		var c = source.charAt(p);
		switch (c) {
			case '=':
				if (s === S_ATTR) {
					//attrName
					attrName = source.slice(start, p);
					s = S_EQ;
				} else if (s === S_ATTR_SPACE) {
					s = S_EQ;
				} else {
					//fatalError: equal must after attrName or space after attrName
					throw new Error('attribute equal must after attrName'); // No known test case
				}
				break;
			case "'":
			case '"':
				if (
					s === S_EQ ||
					s === S_ATTR //|| s == S_ATTR_SPACE
				) {
					//equal
					if (s === S_ATTR) {
						errorHandler.warning('attribute value must after "="');
						attrName = source.slice(start, p);
					}
					start = p + 1;
					p = source.indexOf(c, start);
					if (p > 0) {
						value = source.slice(start, p);
						addAttribute(attrName, value, start - 1);
						s = S_ATTR_END;
					} else {
						//fatalError: no end quot match
						throw new Error("attribute value no end '" + c + "' match");
					}
				} else if (s == S_ATTR_NOQUOT_VALUE) {
					value = source.slice(start, p);
					addAttribute(attrName, value, start);
					errorHandler.warning('attribute "' + attrName + '" missed start quot(' + c + ')!!');
					start = p + 1;
					s = S_ATTR_END;
				} else {
					//fatalError: no equal before
					throw new Error('attribute value must after "="'); // No known test case
				}
				break;
			case '/':
				switch (s) {
					case S_TAG:
						el.setTagName(source.slice(start, p));
					case S_ATTR_END:
					case S_TAG_SPACE:
					case S_TAG_CLOSE:
						s = S_TAG_CLOSE;
						el.closed = true;
					case S_ATTR_NOQUOT_VALUE:
					case S_ATTR:
						break;
					case S_ATTR_SPACE:
						el.closed = true;
						break;
					//case S_EQ:
					default:
						throw new Error("attribute invalid close char('/')"); // No known test case
				}
				break;
			case '': //end document
				errorHandler.error('unexpected end of input');
				if (s == S_TAG) {
					el.setTagName(source.slice(start, p));
				}
				return p;
			case '>':
				switch (s) {
					case S_TAG:
						el.setTagName(source.slice(start, p));
					case S_ATTR_END:
					case S_TAG_SPACE:
					case S_TAG_CLOSE:
						break; //normal
					case S_ATTR_NOQUOT_VALUE: //Compatible state
					case S_ATTR:
						value = source.slice(start, p);
						if (value.slice(-1) === '/') {
							el.closed = true;
							value = value.slice(0, -1);
						}
					case S_ATTR_SPACE:
						if (s === S_ATTR_SPACE) {
							value = attrName;
						}
						if (s == S_ATTR_NOQUOT_VALUE) {
							errorHandler.warning('attribute "' + value + '" missed quot(")!');
							addAttribute(attrName, value, start);
						} else {
							if (!isHTML) {
								errorHandler.warning('attribute "' + value + '" missed value!! "' + value + '" instead!!');
							}
							addAttribute(value, value, start);
						}
						break;
					case S_EQ:
						if (!isHTML) {
							return errorHandler.fatalError('AttValue: \' or " expected');
						}
				}
				return p;
			/*xml space '\x20' | #x9 | #xD | #xA; */
			case '\u0080':
				c = ' ';
			default:
				if (c <= ' ') {
					//space
					switch (s) {
						case S_TAG:
							el.setTagName(source.slice(start, p)); //tagName
							s = S_TAG_SPACE;
							break;
						case S_ATTR:
							attrName = source.slice(start, p);
							s = S_ATTR_SPACE;
							break;
						case S_ATTR_NOQUOT_VALUE:
							var value = source.slice(start, p);
							errorHandler.warning('attribute "' + value + '" missed quot(")!!');
							addAttribute(attrName, value, start);
						case S_ATTR_END:
							s = S_TAG_SPACE;
							break;
						//case S_TAG_SPACE:
						//case S_EQ:
						//case S_ATTR_SPACE:
						//	void();break;
						//case S_TAG_CLOSE:
						//ignore warning
					}
				} else {
					//not space
					//S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
					//S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
					switch (s) {
						//case S_TAG:void();break;
						//case S_ATTR:void();break;
						//case S_ATTR_NOQUOT_VALUE:void();break;
						case S_ATTR_SPACE:
							if (!isHTML) {
								errorHandler.warning('attribute "' + attrName + '" missed value!! "' + attrName + '" instead2!!');
							}
							addAttribute(attrName, attrName, start);
							start = p;
							s = S_ATTR;
							break;
						case S_ATTR_END:
							errorHandler.warning('attribute space is required"' + attrName + '"!!');
						case S_TAG_SPACE:
							s = S_ATTR;
							start = p;
							break;
						case S_EQ:
							s = S_ATTR_NOQUOT_VALUE;
							start = p;
							break;
						case S_TAG_CLOSE:
							throw new Error("elements closed character '/' and '>' must be connected to");
					}
				}
		} //end outer switch
		p++;
	}
}

/**
 * @returns
 * `true` if a new namespace has been defined.
 */
function appendElement(el, domBuilder, currentNSMap) {
	var tagName = el.tagName;
	var localNSMap = null;
	var i = el.length;
	while (i--) {
		var a = el[i];
		var qName = a.qName;
		var value = a.value;
		var nsp = qName.indexOf(':');
		if (nsp > 0) {
			var prefix = (a.prefix = qName.slice(0, nsp));
			var localName = qName.slice(nsp + 1);
			var nsPrefix = prefix === 'xmlns' && localName;
		} else {
			localName = qName;
			prefix = null;
			nsPrefix = qName === 'xmlns' && '';
		}
		//can not set prefix,because prefix !== ''
		a.localName = localName;
		//prefix == null for no ns prefix attribute
		if (nsPrefix !== false) {
			//hack!!
			if (localNSMap == null) {
				localNSMap = Object.create(null);
				_copy(currentNSMap, (currentNSMap = Object.create(null)));
			}
			currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
			a.uri = NAMESPACE.XMLNS;
			domBuilder.startPrefixMapping(nsPrefix, value);
		}
	}
	var i = el.length;
	while (i--) {
		a = el[i];
		if (a.prefix) {
			//no prefix attribute has no namespace
			if (a.prefix === 'xml') {
				a.uri = NAMESPACE.XML;
			}
			if (a.prefix !== 'xmlns') {
				a.uri = currentNSMap[a.prefix];
			}
		}
	}
	var nsp = tagName.indexOf(':');
	if (nsp > 0) {
		prefix = el.prefix = tagName.slice(0, nsp);
		localName = el.localName = tagName.slice(nsp + 1);
	} else {
		prefix = null; //important!!
		localName = el.localName = tagName;
	}
	//no prefix element has default namespace
	var ns = (el.uri = currentNSMap[prefix || '']);
	domBuilder.startElement(ns, localName, tagName, el);
	//endPrefixMapping and startPrefixMapping have not any help for dom builder
	//localNSMap = null
	if (el.closed) {
		domBuilder.endElement(ns, localName, tagName);
		if (localNSMap) {
			for (prefix in localNSMap) {
				if (hasOwn(localNSMap, prefix)) {
					domBuilder.endPrefixMapping(prefix);
				}
			}
		}
	} else {
		el.currentNSMap = currentNSMap;
		el.localNSMap = localNSMap;
		//parseStack.push(el);
		return true;
	}
}

function parseHtmlSpecialContent(source, elStartEnd, tagName, entityReplacer, domBuilder) {
	// https://html.spec.whatwg.org/#raw-text-elements
	// https://html.spec.whatwg.org/#escapable-raw-text-elements
	// https://html.spec.whatwg.org/#cdata-rcdata-restrictions:raw-text-elements
	// TODO: https://html.spec.whatwg.org/#cdata-rcdata-restrictions
	var isEscapableRaw = isHTMLEscapableRawTextElement(tagName);
	if (isEscapableRaw || isHTMLRawTextElement(tagName)) {
		var elEndStart = source.indexOf('</' + tagName + '>', elStartEnd);
		var text = source.substring(elStartEnd + 1, elEndStart);

		if (isEscapableRaw) {
			text = text.replace(ENTITY_REG, entityReplacer);
		}
		domBuilder.characters(text, 0, text.length);
		return elEndStart;
	}
	return elStartEnd + 1;
}

function _copy(source, target) {
	for (var n in source) {
		if (hasOwn(source, n)) {
			target[n] = source[n];
		}
	}
}

/**
 * @typedef ParseUtils
 * @property {function(relativeIndex: number?): string | undefined} char
 * Provides look ahead access to a singe character relative to the current index.
 * @property {function(): number} getIndex
 * Provides read-only access to the current index.
 * @property {function(reg: RegExp): string | null} getMatch
 * Applies the provided regular expression enforcing that it starts at the current index and
 * returns the complete matching string,
 * and moves the current index by the length of the matching string.
 * @property {function(): string} getSource
 * Provides read-only access to the complete source.
 * @property {function(places: number?): void} skip
 * moves the current index by places (defaults to 1)
 * @property {function(): number} skipBlanks
 * Moves the current index by the amount of white space that directly follows the current index
 * and returns the amount of whitespace chars skipped (0..n),
 * or -1 if the end of the source was reached.
 * @property {function(): string} substringFromIndex
 * creates a substring from the current index to the end of `source`
 * @property {function(compareWith: string): boolean} substringStartsWith
 * Checks if `source` contains `compareWith`, starting from the current index.
 * @property {function(compareWith: string): boolean} substringStartsWithCaseInsensitive
 * Checks if `source` contains `compareWith`, starting from the current index,
 * comparing the upper case of both sides.
 * @see {@link parseUtils}
 */

/**
 * A temporary scope for parsing and look ahead operations in `source`,
 * starting from index `start`.
 *
 * Some operations move the current index by a number of positions,
 * after which `getIndex` returns the new index.
 *
 * @param {string} source
 * @param {number} start
 * @returns {ParseUtils}
 */
function parseUtils(source, start) {
	var index = start;

	function char(n) {
		n = n || 0;
		return source.charAt(index + n);
	}

	function skip(n) {
		n = n || 1;
		index += n;
	}

	function skipBlanks() {
		var blanks = 0;
		while (index < source.length) {
			var c = char();
			if (c !== ' ' && c !== '\n' && c !== '\t' && c !== '\r') {
				return blanks;
			}
			blanks++;
			skip();
		}
		return -1;
	}
	function substringFromIndex() {
		return source.substring(index);
	}
	function substringStartsWith(text) {
		return source.substring(index, index + text.length) === text;
	}
	function substringStartsWithCaseInsensitive(text) {
		return source.substring(index, index + text.length).toUpperCase() === text.toUpperCase();
	}

	function getMatch(args) {
		var expr = g.reg('^', args);
		var match = expr.exec(substringFromIndex());
		if (match) {
			skip(match[0].length);
			return match[0];
		}
		return null;
	}
	return {
		char: char,
		getIndex: function () {
			return index;
		},
		getMatch: getMatch,
		getSource: function () {
			return source;
		},
		skip: skip,
		skipBlanks: skipBlanks,
		substringFromIndex: substringFromIndex,
		substringStartsWith: substringStartsWith,
		substringStartsWithCaseInsensitive: substringStartsWithCaseInsensitive,
	};
}

/**
 * @param {ParseUtils} p
 * @param {DOMHandler} errorHandler
 * @returns {string}
 */
function parseDoctypeInternalSubset(p, errorHandler) {
	/**
	 * @param {ParseUtils} p
	 * @param {DOMHandler} errorHandler
	 * @returns {string}
	 */
	function parsePI(p, errorHandler) {
		var match = g.PI.exec(p.substringFromIndex());
		if (!match) {
			return errorHandler.fatalError('processing instruction is not well-formed at position ' + p.getIndex());
		}
		if (match[1].toLowerCase() === 'xml') {
			return errorHandler.fatalError(
				'xml declaration is only allowed at the start of the document, but found at position ' + p.getIndex()
			);
		}
		p.skip(match[0].length);
		return match[0];
	}
	// Parse internal subset
	var source = p.getSource();
	if (p.char() === '[') {
		p.skip(1);
		var intSubsetStart = p.getIndex();
		while (p.getIndex() < source.length) {
			p.skipBlanks();
			if (p.char() === ']') {
				var internalSubset = source.substring(intSubsetStart, p.getIndex());
				p.skip(1);
				return internalSubset;
			}
			var current = null;
			// Only in external subset
			// if (char() === '<' && char(1) === '!' && char(2) === '[') {
			// 	parseConditionalSections(p, errorHandler);
			// } else
			if (p.char() === '<' && p.char(1) === '!') {
				switch (p.char(2)) {
					case 'E': // ELEMENT | ENTITY
						if (p.char(3) === 'L') {
							current = p.getMatch(g.elementdecl);
						} else if (p.char(3) === 'N') {
							current = p.getMatch(g.EntityDecl);
						}
						break;
					case 'A': // ATTRIBUTE
						current = p.getMatch(g.AttlistDecl);
						break;
					case 'N': // NOTATION
						current = p.getMatch(g.NotationDecl);
						break;
					case '-': // COMMENT
						current = p.getMatch(g.Comment);
						break;
				}
			} else if (p.char() === '<' && p.char(1) === '?') {
				current = parsePI(p, errorHandler);
			} else if (p.char() === '%') {
				current = p.getMatch(g.PEReference);
			} else {
				return errorHandler.fatalError('Error detected in Markup declaration');
			}
			if (!current) {
				return errorHandler.fatalError('Error in internal subset at position ' + p.getIndex());
			}
		}
		return errorHandler.fatalError('doctype internal subset is not well-formed, missing ]');
	}
}

/**
 * Called when the parser encounters an element starting with '<!'.
 *
 * @param {string} source
 * The xml.
 * @param {number} start
 * the start index of the '<!'
 * @param {DOMHandler} domBuilder
 * @param {DOMHandler} errorHandler
 * @param {boolean} isHTML
 * @returns {number | never}
 * The end index of the element.
 * @throws {ParseError}
 * In case the element is not well-formed.
 */
function parseDoctypeCommentOrCData(source, start, domBuilder, errorHandler, isHTML) {
	var p = parseUtils(source, start);

	switch (isHTML ? p.char(2).toUpperCase() : p.char(2)) {
		case '-':
			// should be a comment
			var comment = p.getMatch(g.Comment);
			if (comment) {
				domBuilder.comment(comment, g.COMMENT_START.length, comment.length - g.COMMENT_START.length - g.COMMENT_END.length);
				return p.getIndex();
			} else {
				return errorHandler.fatalError('comment is not well-formed at position ' + p.getIndex());
			}
		case '[':
			// should be CDATA
			var cdata = p.getMatch(g.CDSect);
			if (cdata) {
				if (!isHTML && !domBuilder.currentElement) {
					return errorHandler.fatalError('CDATA outside of element');
				}
				domBuilder.startCDATA();
				domBuilder.characters(cdata, g.CDATA_START.length, cdata.length - g.CDATA_START.length - g.CDATA_END.length);
				domBuilder.endCDATA();
				return p.getIndex();
			} else {
				return errorHandler.fatalError('Invalid CDATA starting at position ' + start);
			}
		case 'D': {
			// should be DOCTYPE
			if (domBuilder.doc && domBuilder.doc.documentElement) {
				return errorHandler.fatalError('Doctype not allowed inside or after documentElement at position ' + p.getIndex());
			}
			if (isHTML ? !p.substringStartsWithCaseInsensitive(g.DOCTYPE_DECL_START) : !p.substringStartsWith(g.DOCTYPE_DECL_START)) {
				return errorHandler.fatalError('Expected ' + g.DOCTYPE_DECL_START + ' at position ' + p.getIndex());
			}
			p.skip(g.DOCTYPE_DECL_START.length);
			if (p.skipBlanks() < 1) {
				return errorHandler.fatalError('Expected whitespace after ' + g.DOCTYPE_DECL_START + ' at position ' + p.getIndex());
			}

			var doctype = {
				name: undefined,
				publicId: undefined,
				systemId: undefined,
				internalSubset: undefined,
			};
			// Parse the DOCTYPE name
			doctype.name = p.getMatch(g.Name);
			if (!doctype.name)
				return errorHandler.fatalError('doctype name missing or contains unexpected characters at position ' + p.getIndex());

			if (isHTML && doctype.name.toLowerCase() !== 'html') {
				errorHandler.warning('Unexpected DOCTYPE in HTML document at position ' + p.getIndex());
			}
			p.skipBlanks();

			// Check for ExternalID
			if (p.substringStartsWith(g.PUBLIC) || p.substringStartsWith(g.SYSTEM)) {
				var match = g.ExternalID_match.exec(p.substringFromIndex());
				if (!match) {
					return errorHandler.fatalError('doctype external id is not well-formed at position ' + p.getIndex());
				}
				if (match.groups.SystemLiteralOnly !== undefined) {
					doctype.systemId = match.groups.SystemLiteralOnly;
				} else {
					doctype.systemId = match.groups.SystemLiteral;
					doctype.publicId = match.groups.PubidLiteral;
				}
				p.skip(match[0].length);
			} else if (isHTML && p.substringStartsWithCaseInsensitive(g.SYSTEM)) {
				// https://html.spec.whatwg.org/multipage/syntax.html#doctype-legacy-string
				p.skip(g.SYSTEM.length);
				if (p.skipBlanks() < 1) {
					return errorHandler.fatalError('Expected whitespace after ' + g.SYSTEM + ' at position ' + p.getIndex());
				}
				doctype.systemId = p.getMatch(g.ABOUT_LEGACY_COMPAT_SystemLiteral);
				if (!doctype.systemId) {
					return errorHandler.fatalError(
						'Expected ' + g.ABOUT_LEGACY_COMPAT + ' in single or double quotes after ' + g.SYSTEM + ' at position ' + p.getIndex()
					);
				}
			}
			if (isHTML && doctype.systemId && !g.ABOUT_LEGACY_COMPAT_SystemLiteral.test(doctype.systemId)) {
				errorHandler.warning('Unexpected doctype.systemId in HTML document at position ' + p.getIndex());
			}
			if (!isHTML) {
				p.skipBlanks();
				doctype.internalSubset = parseDoctypeInternalSubset(p, errorHandler);
			}
			p.skipBlanks();
			if (p.char() !== '>') {
				return errorHandler.fatalError('doctype not terminated with > at position ' + p.getIndex());
			}
			p.skip(1);
			domBuilder.startDTD(doctype.name, doctype.publicId, doctype.systemId, doctype.internalSubset);
			domBuilder.endDTD();
			return p.getIndex();
		}
		default:
			return errorHandler.fatalError('Not well-formed XML starting with "<!" at position ' + start);
	}
}

function parseProcessingInstruction(source, start, domBuilder, errorHandler) {
	var match = source.substring(start).match(g.PI);
	if (!match) {
		return errorHandler.fatalError('Invalid processing instruction starting at position ' + start);
	}
	if (match[1].toLowerCase() === 'xml') {
		if (start > 0) {
			return errorHandler.fatalError(
				'processing instruction at position ' + start + ' is an xml declaration which is only at the start of the document'
			);
		}
		if (!g.XMLDecl.test(source.substring(start))) {
			return errorHandler.fatalError('xml declaration is not well-formed');
		}
	}
	domBuilder.processingInstruction(match[1], match[2]);
	return start + match[0].length;
}

function ElementAttributes() {
	this.attributeNames = Object.create(null);
}

ElementAttributes.prototype = {
	setTagName: function (tagName) {
		if (!g.QName_exact.test(tagName)) {
			throw new Error('invalid tagName:' + tagName);
		}
		this.tagName = tagName;
	},
	addValue: function (qName, value, offset) {
		if (!g.QName_exact.test(qName)) {
			throw new Error('invalid attribute:' + qName);
		}
		this.attributeNames[qName] = this.length;
		this[this.length++] = { qName: qName, value: value, offset: offset };
	},
	length: 0,
	getLocalName: function (i) {
		return this[i].localName;
	},
	getLocator: function (i) {
		return this[i].locator;
	},
	getQName: function (i) {
		return this[i].qName;
	},
	getURI: function (i) {
		return this[i].uri;
	},
	getValue: function (i) {
		return this[i].value;
	},
	//	,getIndex:function(uri, localName)){
	//		if(localName){
	//
	//		}else{
	//			var qName = uri
	//		}
	//	},
	//	getValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},
	//	getType:function(uri,localName){}
	//	getType:function(i){},
};

exports.XMLReader = XMLReader;
exports.parseUtils = parseUtils;
exports.parseDoctypeCommentOrCData = parseDoctypeCommentOrCData;

},{"./conventions":2,"./errors":6,"./grammar":7}],10:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  var i
  for (i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}

},{}],11:[function(require,module,exports){
(function (Buffer){(function (){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

Object.defineProperty(Buffer.prototype, 'parent', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.buffer
  }
})

Object.defineProperty(Buffer.prototype, 'offset', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.byteOffset
  }
})

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('The value "' + length + '" is invalid for option "size"')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  buf.__proto__ = Buffer.prototype
  return buf
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new TypeError(
        'The "string" argument must be of type string. Received type number'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  if (ArrayBuffer.isView(value)) {
    return fromArrayLike(value)
  }

  if (value == null) {
    throw TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }

  if (isInstance(value, ArrayBuffer) ||
      (value && isInstance(value.buffer, ArrayBuffer))) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'number') {
    throw new TypeError(
      'The "value" argument must not be of type number. Received type number'
    )
  }

  var valueOf = value.valueOf && value.valueOf()
  if (valueOf != null && valueOf !== value) {
    return Buffer.from(valueOf, encodingOrOffset, length)
  }

  var b = fromObject(value)
  if (b) return b

  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
      typeof value[Symbol.toPrimitive] === 'function') {
    return Buffer.from(
      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
    )
  }

  throw new TypeError(
    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
    'or Array-like Object. Received type ' + (typeof value)
  )
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be of type number')
  } else if (size < 0) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('Unknown encoding: ' + encoding)
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('"offset" is outside of buffer bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('"length" is outside of buffer bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  buf.__proto__ = Buffer.prototype
  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj.length !== undefined) {
    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
      return createBuffer(0)
    }
    return fromArrayLike(obj)
  }

  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
    return fromArrayLike(obj.data)
  }
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return b != null && b._isBuffer === true &&
    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}

Buffer.compare = function compare (a, b) {
  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError(
      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
    )
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (isInstance(buf, Uint8Array)) {
      buf = Buffer.from(buf)
    }
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    throw new TypeError(
      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
      'Received type ' + typeof string
    )
  }

  var len = string.length
  var mustMatch = (arguments.length > 2 && arguments[2] === true)
  if (!mustMatch && len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) {
          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
        }
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.toLocaleString = Buffer.prototype.toString

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
  if (this.length > max) str += ' ... '
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (isInstance(target, Uint8Array)) {
    target = Buffer.from(target, target.offset, target.byteLength)
  }
  if (!Buffer.isBuffer(target)) {
    throw new TypeError(
      'The "target" argument must be one of type Buffer or Uint8Array. ' +
      'Received type ' + (typeof target)
    )
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  var strLen = string.length

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
          : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  newBuf.__proto__ = Buffer.prototype
  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start

  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
    // Use built-in when available, missing from IE11
    this.copyWithin(targetStart, start, end)
  } else if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (var i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, end),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if ((encoding === 'utf8' && code < 128) ||
          encoding === 'latin1') {
        // Fast path: If `val` fits into a single byte, use that numeric value.
        val = code
      }
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : Buffer.from(val, encoding)
    var len = bytes.length
    if (len === 0) {
      throw new TypeError('The value "' + val +
        '" is invalid for argument "value"')
    }
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node takes equal signs as end of the Base64 encoding
  str = str.split('=')[0]
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
  return obj instanceof type ||
    (obj != null && obj.constructor != null && obj.constructor.name != null &&
      obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
  // For IE11 support
  return obj !== obj // eslint-disable-line no-self-compare
}

}).call(this)}).call(this,require("buffer").Buffer)
},{"base64-js":10,"buffer":11,"ieee754":12}],12:[function(require,module,exports){
/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}]},{},[1])(1)
});