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/*!
 * @toast-ui/editor
 * @version 3.2.2 | Fri Feb 17 2023
 * @author NHN Cloud FE Development Lab 
 * @license MIT
 */
(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory(require("prosemirror-commands"), require("prosemirror-history"), require("prosemirror-inputrules"), require("prosemirror-keymap"), require("prosemirror-model"), require("prosemirror-state"), require("prosemirror-transform"), require("prosemirror-view"));
	else if(typeof define === 'function' && define.amd)
		define(["prosemirror-commands", "prosemirror-history", "prosemirror-inputrules", "prosemirror-keymap", "prosemirror-model", "prosemirror-state", "prosemirror-transform", "prosemirror-view"], factory);
	else if(typeof exports === 'object')
		exports["toastui"] = factory(require("prosemirror-commands"), require("prosemirror-history"), require("prosemirror-inputrules"), require("prosemirror-keymap"), require("prosemirror-model"), require("prosemirror-state"), require("prosemirror-transform"), require("prosemirror-view"));
	else
		root["toastui"] = root["toastui"] || {}, root["toastui"]["Editor"] = factory(root[undefined], root[undefined], root[undefined], root[undefined], root[undefined], root[undefined], root[undefined], root[undefined]);
})(self, function(__WEBPACK_EXTERNAL_MODULE__695__, __WEBPACK_EXTERNAL_MODULE__412__, __WEBPACK_EXTERNAL_MODULE__479__, __WEBPACK_EXTERNAL_MODULE__481__, __WEBPACK_EXTERNAL_MODULE__43__, __WEBPACK_EXTERNAL_MODULE__814__, __WEBPACK_EXTERNAL_MODULE__785__, __WEBPACK_EXTERNAL_MODULE__311__) {
return /******/ (function() { // webpackBootstrap
/******/ 	var __webpack_modules__ = ({

/***/ 368:
/***/ (function(module) {

/*! @license DOMPurify 2.3.3 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/2.3.3/LICENSE */

(function (global, factory) {
   true ? module.exports = factory() :
  0;
}(this, function () { 'use strict';

  function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

  var hasOwnProperty = Object.hasOwnProperty,
      setPrototypeOf = Object.setPrototypeOf,
      isFrozen = Object.isFrozen,
      getPrototypeOf = Object.getPrototypeOf,
      getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
  var freeze = Object.freeze,
      seal = Object.seal,
      create = Object.create; // eslint-disable-line import/no-mutable-exports

  var _ref = typeof Reflect !== 'undefined' && Reflect,
      apply = _ref.apply,
      construct = _ref.construct;

  if (!apply) {
    apply = function apply(fun, thisValue, args) {
      return fun.apply(thisValue, args);
    };
  }

  if (!freeze) {
    freeze = function freeze(x) {
      return x;
    };
  }

  if (!seal) {
    seal = function seal(x) {
      return x;
    };
  }

  if (!construct) {
    construct = function construct(Func, args) {
      return new (Function.prototype.bind.apply(Func, [null].concat(_toConsumableArray(args))))();
    };
  }

  var arrayForEach = unapply(Array.prototype.forEach);
  var arrayPop = unapply(Array.prototype.pop);
  var arrayPush = unapply(Array.prototype.push);

  var stringToLowerCase = unapply(String.prototype.toLowerCase);
  var stringMatch = unapply(String.prototype.match);
  var stringReplace = unapply(String.prototype.replace);
  var stringIndexOf = unapply(String.prototype.indexOf);
  var stringTrim = unapply(String.prototype.trim);

  var regExpTest = unapply(RegExp.prototype.test);

  var typeErrorCreate = unconstruct(TypeError);

  function unapply(func) {
    return function (thisArg) {
      for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
        args[_key - 1] = arguments[_key];
      }

      return apply(func, thisArg, args);
    };
  }

  function unconstruct(func) {
    return function () {
      for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
        args[_key2] = arguments[_key2];
      }

      return construct(func, args);
    };
  }

  /* Add properties to a lookup table */
  function addToSet(set, array) {
    if (setPrototypeOf) {
      // Make 'in' and truthy checks like Boolean(set.constructor)
      // independent of any properties defined on Object.prototype.
      // Prevent prototype setters from intercepting set as a this value.
      setPrototypeOf(set, null);
    }

    var l = array.length;
    while (l--) {
      var element = array[l];
      if (typeof element === 'string') {
        var lcElement = stringToLowerCase(element);
        if (lcElement !== element) {
          // Config presets (e.g. tags.js, attrs.js) are immutable.
          if (!isFrozen(array)) {
            array[l] = lcElement;
          }

          element = lcElement;
        }
      }

      set[element] = true;
    }

    return set;
  }

  /* Shallow clone an object */
  function clone(object) {
    var newObject = create(null);

    var property = void 0;
    for (property in object) {
      if (apply(hasOwnProperty, object, [property])) {
        newObject[property] = object[property];
      }
    }

    return newObject;
  }

  /* IE10 doesn't support __lookupGetter__ so lets'
   * simulate it. It also automatically checks
   * if the prop is function or getter and behaves
   * accordingly. */
  function lookupGetter(object, prop) {
    while (object !== null) {
      var desc = getOwnPropertyDescriptor(object, prop);
      if (desc) {
        if (desc.get) {
          return unapply(desc.get);
        }

        if (typeof desc.value === 'function') {
          return unapply(desc.value);
        }
      }

      object = getPrototypeOf(object);
    }

    function fallbackValue(element) {
      console.warn('fallback value for', element);
      return null;
    }

    return fallbackValue;
  }

  var html = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']);

  // SVG
  var svg = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);

  var svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']);

  // List of SVG elements that are disallowed by default.
  // We still need to know them so that we can do namespace
  // checks properly in case one wants to add them to
  // allow-list.
  var svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'fedropshadow', 'feimage', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']);

  var mathMl = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover']);

  // Similarly to SVG, we want to know all MathML elements,
  // even those that we disallow by default.
  var mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);

  var text = freeze(['#text']);

  var html$1 = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'xmlns', 'slot']);

  var svg$1 = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'targetx', 'targety', 'transform', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);

  var mathMl$1 = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);

  var xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);

  // eslint-disable-next-line unicorn/better-regex
  var MUSTACHE_EXPR = seal(/\{\{[\s\S]*|[\s\S]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
  var ERB_EXPR = seal(/<%[\s\S]*|[\s\S]*%>/gm);
  var DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]/); // eslint-disable-line no-useless-escape
  var ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
  var IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
  );
  var IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
  var ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
  );

  var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

  function _toConsumableArray$1(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

  var getGlobal = function getGlobal() {
    return typeof window === 'undefined' ? null : window;
  };

  /**
   * Creates a no-op policy for internal use only.
   * Don't export this function outside this module!
   * @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.
   * @param {Document} document The document object (to determine policy name suffix)
   * @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types
   * are not supported).
   */
  var _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, document) {
    if ((typeof trustedTypes === 'undefined' ? 'undefined' : _typeof(trustedTypes)) !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
      return null;
    }

    // Allow the callers to control the unique policy name
    // by adding a data-tt-policy-suffix to the script element with the DOMPurify.
    // Policy creation with duplicate names throws in Trusted Types.
    var suffix = null;
    var ATTR_NAME = 'data-tt-policy-suffix';
    if (document.currentScript && document.currentScript.hasAttribute(ATTR_NAME)) {
      suffix = document.currentScript.getAttribute(ATTR_NAME);
    }

    var policyName = 'dompurify' + (suffix ? '#' + suffix : '');

    try {
      return trustedTypes.createPolicy(policyName, {
        createHTML: function createHTML(html$$1) {
          return html$$1;
        }
      });
    } catch (_) {
      // Policy creation failed (most likely another DOMPurify script has
      // already run). Skip creating the policy, as this will only cause errors
      // if TT are enforced.
      console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
      return null;
    }
  };

  function createDOMPurify() {
    var window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();

    var DOMPurify = function DOMPurify(root) {
      return createDOMPurify(root);
    };

    /**
     * Version label, exposed for easier checks
     * if DOMPurify is up to date or not
     */
    DOMPurify.version = '2.3.3';

    /**
     * Array of elements that DOMPurify removed during sanitation.
     * Empty if nothing was removed.
     */
    DOMPurify.removed = [];

    if (!window || !window.document || window.document.nodeType !== 9) {
      // Not running in a browser, provide a factory function
      // so that you can pass your own Window
      DOMPurify.isSupported = false;

      return DOMPurify;
    }

    var originalDocument = window.document;

    var document = window.document;
    var DocumentFragment = window.DocumentFragment,
        HTMLTemplateElement = window.HTMLTemplateElement,
        Node = window.Node,
        Element = window.Element,
        NodeFilter = window.NodeFilter,
        _window$NamedNodeMap = window.NamedNodeMap,
        NamedNodeMap = _window$NamedNodeMap === undefined ? window.NamedNodeMap || window.MozNamedAttrMap : _window$NamedNodeMap,
        Text = window.Text,
        Comment = window.Comment,
        DOMParser = window.DOMParser,
        trustedTypes = window.trustedTypes;


    var ElementPrototype = Element.prototype;

    var cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
    var getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
    var getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
    var getParentNode = lookupGetter(ElementPrototype, 'parentNode');

    // As per issue #47, the web-components registry is inherited by a
    // new document created via createHTMLDocument. As per the spec
    // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
    // a new empty registry is used when creating a template contents owner
    // document, so we use that as our parent document to ensure nothing
    // is inherited.
    if (typeof HTMLTemplateElement === 'function') {
      var template = document.createElement('template');
      if (template.content && template.content.ownerDocument) {
        document = template.content.ownerDocument;
      }
    }

    var trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, originalDocument);
    var emptyHTML = trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML('') : '';

    var _document = document,
        implementation = _document.implementation,
        createNodeIterator = _document.createNodeIterator,
        createDocumentFragment = _document.createDocumentFragment,
        getElementsByTagName = _document.getElementsByTagName;
    var importNode = originalDocument.importNode;


    var documentMode = {};
    try {
      documentMode = clone(document).documentMode ? document.documentMode : {};
    } catch (_) {}

    var hooks = {};

    /**
     * Expose whether this browser supports running the full DOMPurify.
     */
    DOMPurify.isSupported = typeof getParentNode === 'function' && implementation && typeof implementation.createHTMLDocument !== 'undefined' && documentMode !== 9;

    var MUSTACHE_EXPR$$1 = MUSTACHE_EXPR,
        ERB_EXPR$$1 = ERB_EXPR,
        DATA_ATTR$$1 = DATA_ATTR,
        ARIA_ATTR$$1 = ARIA_ATTR,
        IS_SCRIPT_OR_DATA$$1 = IS_SCRIPT_OR_DATA,
        ATTR_WHITESPACE$$1 = ATTR_WHITESPACE;
    var IS_ALLOWED_URI$$1 = IS_ALLOWED_URI;

    /**
     * We consider the elements and attributes below to be safe. Ideally
     * don't add any new ones but feel free to remove unwanted ones.
     */

    /* allowed element names */

    var ALLOWED_TAGS = null;
    var DEFAULT_ALLOWED_TAGS = addToSet({}, [].concat(_toConsumableArray$1(html), _toConsumableArray$1(svg), _toConsumableArray$1(svgFilters), _toConsumableArray$1(mathMl), _toConsumableArray$1(text)));

    /* Allowed attribute names */
    var ALLOWED_ATTR = null;
    var DEFAULT_ALLOWED_ATTR = addToSet({}, [].concat(_toConsumableArray$1(html$1), _toConsumableArray$1(svg$1), _toConsumableArray$1(mathMl$1), _toConsumableArray$1(xml)));

    /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
    var FORBID_TAGS = null;

    /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
    var FORBID_ATTR = null;

    /* Decide if ARIA attributes are okay */
    var ALLOW_ARIA_ATTR = true;

    /* Decide if custom data attributes are okay */
    var ALLOW_DATA_ATTR = true;

    /* Decide if unknown protocols are okay */
    var ALLOW_UNKNOWN_PROTOCOLS = false;

    /* Output should be safe for common template engines.
     * This means, DOMPurify removes data attributes, mustaches and ERB
     */
    var SAFE_FOR_TEMPLATES = false;

    /* Decide if document with ... should be returned */
    var WHOLE_DOCUMENT = false;

    /* Track whether config is already set on this instance of DOMPurify. */
    var SET_CONFIG = false;

    /* Decide if all elements (e.g. style, script) must be children of
     * document.body. By default, browsers might move them to document.head */
    var FORCE_BODY = false;

    /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
     * string (or a TrustedHTML object if Trusted Types are supported).
     * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
     */
    var RETURN_DOM = false;

    /* Decide if a DOM `DocumentFragment` should be returned, instead of a html
     * string  (or a TrustedHTML object if Trusted Types are supported) */
    var RETURN_DOM_FRAGMENT = false;

    /* If `RETURN_DOM` or `RETURN_DOM_FRAGMENT` is enabled, decide if the returned DOM
     * `Node` is imported into the current `Document`. If this flag is not enabled the
     * `Node` will belong (its ownerDocument) to a fresh `HTMLDocument`, created by
     * DOMPurify.
     *
     * This defaults to `true` starting DOMPurify 2.2.0. Note that setting it to `false`
     * might cause XSS from attacks hidden in closed shadowroots in case the browser
     * supports Declarative Shadow: DOM https://web.dev/declarative-shadow-dom/
     */
    var RETURN_DOM_IMPORT = true;

    /* Try to return a Trusted Type object instead of a string, return a string in
     * case Trusted Types are not supported  */
    var RETURN_TRUSTED_TYPE = false;

    /* Output should be free from DOM clobbering attacks? */
    var SANITIZE_DOM = true;

    /* Keep element content when removing element? */
    var KEEP_CONTENT = true;

    /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
     * of importing it into a new Document and returning a sanitized copy */
    var IN_PLACE = false;

    /* Allow usage of profiles like html, svg and mathMl */
    var USE_PROFILES = {};

    /* Tags to ignore content of when KEEP_CONTENT is true */
    var FORBID_CONTENTS = null;
    var DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);

    /* Tags that are safe for data: URIs */
    var DATA_URI_TAGS = null;
    var DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);

    /* Attributes safe for values like "javascript:" */
    var URI_SAFE_ATTRIBUTES = null;
    var DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);

    var MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
    var SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
    var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
    /* Document namespace */
    var NAMESPACE = HTML_NAMESPACE;
    var IS_EMPTY_INPUT = false;

    /* Parsing of strict XHTML documents */
    var PARSER_MEDIA_TYPE = void 0;
    var SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
    var DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
    var transformCaseFunc = void 0;

    /* Keep a reference to config to pass to hooks */
    var CONFIG = null;

    /* Ideally, do not touch anything below this line */
    /* ______________________________________________ */

    var formElement = document.createElement('form');

    /**
     * _parseConfig
     *
     * @param  {Object} cfg optional config literal
     */
    // eslint-disable-next-line complexity
    var _parseConfig = function _parseConfig(cfg) {
      if (CONFIG && CONFIG === cfg) {
        return;
      }

      /* Shield configuration object from tampering */
      if (!cfg || (typeof cfg === 'undefined' ? 'undefined' : _typeof(cfg)) !== 'object') {
        cfg = {};
      }

      /* Shield configuration object from prototype pollution */
      cfg = clone(cfg);

      /* Set configuration parameters */
      ALLOWED_TAGS = 'ALLOWED_TAGS' in cfg ? addToSet({}, cfg.ALLOWED_TAGS) : DEFAULT_ALLOWED_TAGS;
      ALLOWED_ATTR = 'ALLOWED_ATTR' in cfg ? addToSet({}, cfg.ALLOWED_ATTR) : DEFAULT_ALLOWED_ATTR;
      URI_SAFE_ATTRIBUTES = 'ADD_URI_SAFE_ATTR' in cfg ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR) : DEFAULT_URI_SAFE_ATTRIBUTES;
      DATA_URI_TAGS = 'ADD_DATA_URI_TAGS' in cfg ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS) : DEFAULT_DATA_URI_TAGS;
      FORBID_CONTENTS = 'FORBID_CONTENTS' in cfg ? addToSet({}, cfg.FORBID_CONTENTS) : DEFAULT_FORBID_CONTENTS;
      FORBID_TAGS = 'FORBID_TAGS' in cfg ? addToSet({}, cfg.FORBID_TAGS) : {};
      FORBID_ATTR = 'FORBID_ATTR' in cfg ? addToSet({}, cfg.FORBID_ATTR) : {};
      USE_PROFILES = 'USE_PROFILES' in cfg ? cfg.USE_PROFILES : false;
      ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
      ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
      ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
      SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
      WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
      RETURN_DOM = cfg.RETURN_DOM || false; // Default false
      RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
      RETURN_DOM_IMPORT = cfg.RETURN_DOM_IMPORT !== false; // Default true
      RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
      FORCE_BODY = cfg.FORCE_BODY || false; // Default false
      SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
      KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
      IN_PLACE = cfg.IN_PLACE || false; // Default false
      IS_ALLOWED_URI$$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI$$1;
      NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;

      PARSER_MEDIA_TYPE =
      // eslint-disable-next-line unicorn/prefer-includes
      SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? PARSER_MEDIA_TYPE = DEFAULT_PARSER_MEDIA_TYPE : PARSER_MEDIA_TYPE = cfg.PARSER_MEDIA_TYPE;

      // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
      transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? function (x) {
        return x;
      } : stringToLowerCase;

      if (SAFE_FOR_TEMPLATES) {
        ALLOW_DATA_ATTR = false;
      }

      if (RETURN_DOM_FRAGMENT) {
        RETURN_DOM = true;
      }

      /* Parse profile info */
      if (USE_PROFILES) {
        ALLOWED_TAGS = addToSet({}, [].concat(_toConsumableArray$1(text)));
        ALLOWED_ATTR = [];
        if (USE_PROFILES.html === true) {
          addToSet(ALLOWED_TAGS, html);
          addToSet(ALLOWED_ATTR, html$1);
        }

        if (USE_PROFILES.svg === true) {
          addToSet(ALLOWED_TAGS, svg);
          addToSet(ALLOWED_ATTR, svg$1);
          addToSet(ALLOWED_ATTR, xml);
        }

        if (USE_PROFILES.svgFilters === true) {
          addToSet(ALLOWED_TAGS, svgFilters);
          addToSet(ALLOWED_ATTR, svg$1);
          addToSet(ALLOWED_ATTR, xml);
        }

        if (USE_PROFILES.mathMl === true) {
          addToSet(ALLOWED_TAGS, mathMl);
          addToSet(ALLOWED_ATTR, mathMl$1);
          addToSet(ALLOWED_ATTR, xml);
        }
      }

      /* Merge configuration parameters */
      if (cfg.ADD_TAGS) {
        if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
          ALLOWED_TAGS = clone(ALLOWED_TAGS);
        }

        addToSet(ALLOWED_TAGS, cfg.ADD_TAGS);
      }

      if (cfg.ADD_ATTR) {
        if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
          ALLOWED_ATTR = clone(ALLOWED_ATTR);
        }

        addToSet(ALLOWED_ATTR, cfg.ADD_ATTR);
      }

      if (cfg.ADD_URI_SAFE_ATTR) {
        addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR);
      }

      if (cfg.FORBID_CONTENTS) {
        if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
          FORBID_CONTENTS = clone(FORBID_CONTENTS);
        }

        addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS);
      }

      /* Add #text in case KEEP_CONTENT is set to true */
      if (KEEP_CONTENT) {
        ALLOWED_TAGS['#text'] = true;
      }

      /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
      if (WHOLE_DOCUMENT) {
        addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
      }

      /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
      if (ALLOWED_TAGS.table) {
        addToSet(ALLOWED_TAGS, ['tbody']);
        delete FORBID_TAGS.tbody;
      }

      // Prevent further manipulation of configuration.
      // Not available in IE8, Safari 5, etc.
      if (freeze) {
        freeze(cfg);
      }

      CONFIG = cfg;
    };

    var MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);

    var HTML_INTEGRATION_POINTS = addToSet({}, ['foreignobject', 'desc', 'title', 'annotation-xml']);

    /* Keep track of all possible SVG and MathML tags
     * so that we can perform the namespace checks
     * correctly. */
    var ALL_SVG_TAGS = addToSet({}, svg);
    addToSet(ALL_SVG_TAGS, svgFilters);
    addToSet(ALL_SVG_TAGS, svgDisallowed);

    var ALL_MATHML_TAGS = addToSet({}, mathMl);
    addToSet(ALL_MATHML_TAGS, mathMlDisallowed);

    /**
     *
     *
     * @param  {Element} element a DOM element whose namespace is being checked
     * @returns {boolean} Return false if the element has a
     *  namespace that a spec-compliant parser would never
     *  return. Return true otherwise.
     */
    var _checkValidNamespace = function _checkValidNamespace(element) {
      var parent = getParentNode(element);

      // In JSDOM, if we're inside shadow DOM, then parentNode
      // can be null. We just simulate parent in this case.
      if (!parent || !parent.tagName) {
        parent = {
          namespaceURI: HTML_NAMESPACE,
          tagName: 'template'
        };
      }

      var tagName = stringToLowerCase(element.tagName);
      var parentTagName = stringToLowerCase(parent.tagName);

      if (element.namespaceURI === SVG_NAMESPACE) {
        // The only way to switch from HTML namespace to SVG
        // is via . If it happens via any other tag, then
        // it should be killed.
        if (parent.namespaceURI === HTML_NAMESPACE) {
          return tagName === 'svg';
        }

        // The only way to switch from MathML to SVG is via
        // svg if parent is either  or MathML
        // text integration points.
        if (parent.namespaceURI === MATHML_NAMESPACE) {
          return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
        }

        // We only allow elements that are defined in SVG
        // spec. All others are disallowed in SVG namespace.
        return Boolean(ALL_SVG_TAGS[tagName]);
      }

      if (element.namespaceURI === MATHML_NAMESPACE) {
        // The only way to switch from HTML namespace to MathML
        // is via . If it happens via any other tag, then
        // it should be killed.
        if (parent.namespaceURI === HTML_NAMESPACE) {
          return tagName === 'math';
        }

        // The only way to switch from SVG to MathML is via
        //  and HTML integration points
        if (parent.namespaceURI === SVG_NAMESPACE) {
          return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
        }

        // We only allow elements that are defined in MathML
        // spec. All others are disallowed in MathML namespace.
        return Boolean(ALL_MATHML_TAGS[tagName]);
      }

      if (element.namespaceURI === HTML_NAMESPACE) {
        // The only way to switch from SVG to HTML is via
        // HTML integration points, and from MathML to HTML
        // is via MathML text integration points
        if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
          return false;
        }

        if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
          return false;
        }

        // Certain elements are allowed in both SVG and HTML
        // namespace. We need to specify them explicitly
        // so that they don't get erronously deleted from
        // HTML namespace.
        var commonSvgAndHTMLElements = addToSet({}, ['title', 'style', 'font', 'a', 'script']);

        // We disallow tags that are specific for MathML
        // or SVG and should never appear in HTML namespace
        return !ALL_MATHML_TAGS[tagName] && (commonSvgAndHTMLElements[tagName] || !ALL_SVG_TAGS[tagName]);
      }

      // The code should never reach this place (this means
      // that the element somehow got namespace that is not
      // HTML, SVG or MathML). Return false just in case.
      return false;
    };

    /**
     * _forceRemove
     *
     * @param  {Node} node a DOM node
     */
    var _forceRemove = function _forceRemove(node) {
      arrayPush(DOMPurify.removed, { element: node });
      try {
        // eslint-disable-next-line unicorn/prefer-dom-node-remove
        node.parentNode.removeChild(node);
      } catch (_) {
        try {
          node.outerHTML = emptyHTML;
        } catch (_) {
          node.remove();
        }
      }
    };

    /**
     * _removeAttribute
     *
     * @param  {String} name an Attribute name
     * @param  {Node} node a DOM node
     */
    var _removeAttribute = function _removeAttribute(name, node) {
      try {
        arrayPush(DOMPurify.removed, {
          attribute: node.getAttributeNode(name),
          from: node
        });
      } catch (_) {
        arrayPush(DOMPurify.removed, {
          attribute: null,
          from: node
        });
      }

      node.removeAttribute(name);

      // We void attribute values for unremovable "is"" attributes
      if (name === 'is' && !ALLOWED_ATTR[name]) {
        if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
          try {
            _forceRemove(node);
          } catch (_) {}
        } else {
          try {
            node.setAttribute(name, '');
          } catch (_) {}
        }
      }
    };

    /**
     * _initDocument
     *
     * @param  {String} dirty a string of dirty markup
     * @return {Document} a DOM, filled with the dirty markup
     */
    var _initDocument = function _initDocument(dirty) {
      /* Create a HTML document */
      var doc = void 0;
      var leadingWhitespace = void 0;

      if (FORCE_BODY) {
        dirty = '' + dirty;
      } else {
        /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
        var matches = stringMatch(dirty, /^[\r\n\t ]+/);
        leadingWhitespace = matches && matches[0];
      }

      if (PARSER_MEDIA_TYPE === 'application/xhtml+xml') {
        // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
        dirty = '' + dirty + '';
      }

      var dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
      /*
       * Use the DOMParser API by default, fallback later if needs be
       * DOMParser not work for svg when has multiple root element.
       */
      if (NAMESPACE === HTML_NAMESPACE) {
        try {
          doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
        } catch (_) {}
      }

      /* Use createHTMLDocument in case DOMParser is not available */
      if (!doc || !doc.documentElement) {
        doc = implementation.createDocument(NAMESPACE, 'template', null);
        try {
          doc.documentElement.innerHTML = IS_EMPTY_INPUT ? '' : dirtyPayload;
        } catch (_) {
          // Syntax error if dirtyPayload is invalid xml
        }
      }

      var body = doc.body || doc.documentElement;

      if (dirty && leadingWhitespace) {
        body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
      }

      /* Work on whole document or just its body */
      if (NAMESPACE === HTML_NAMESPACE) {
        return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
      }

      return WHOLE_DOCUMENT ? doc.documentElement : body;
    };

    /**
     * _createIterator
     *
     * @param  {Document} root document/fragment to create iterator for
     * @return {Iterator} iterator instance
     */
    var _createIterator = function _createIterator(root) {
      return createNodeIterator.call(root.ownerDocument || root, root, NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT, null, false);
    };

    /**
     * _isClobbered
     *
     * @param  {Node} elm element to check for clobbering attacks
     * @return {Boolean} true if clobbered, false if safe
     */
    var _isClobbered = function _isClobbered(elm) {
      if (elm instanceof Text || elm instanceof Comment) {
        return false;
      }

      if (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function') {
        return true;
      }

      return false;
    };

    /**
     * _isNode
     *
     * @param  {Node} obj object to check whether it's a DOM node
     * @return {Boolean} true is object is a DOM node
     */
    var _isNode = function _isNode(object) {
      return (typeof Node === 'undefined' ? 'undefined' : _typeof(Node)) === 'object' ? object instanceof Node : object && (typeof object === 'undefined' ? 'undefined' : _typeof(object)) === 'object' && typeof object.nodeType === 'number' && typeof object.nodeName === 'string';
    };

    /**
     * _executeHook
     * Execute user configurable hooks
     *
     * @param  {String} entryPoint  Name of the hook's entry point
     * @param  {Node} currentNode node to work on with the hook
     * @param  {Object} data additional hook parameters
     */
    var _executeHook = function _executeHook(entryPoint, currentNode, data) {
      if (!hooks[entryPoint]) {
        return;
      }

      arrayForEach(hooks[entryPoint], function (hook) {
        hook.call(DOMPurify, currentNode, data, CONFIG);
      });
    };

    /**
     * _sanitizeElements
     *
     * @protect nodeName
     * @protect textContent
     * @protect removeChild
     *
     * @param   {Node} currentNode to check for permission to exist
     * @return  {Boolean} true if node was killed, false if left alive
     */
    var _sanitizeElements = function _sanitizeElements(currentNode) {
      var content = void 0;

      /* Execute a hook if present */
      _executeHook('beforeSanitizeElements', currentNode, null);

      /* Check if element is clobbered or can clobber */
      if (_isClobbered(currentNode)) {
        _forceRemove(currentNode);
        return true;
      }

      /* Check if tagname contains Unicode */
      if (stringMatch(currentNode.nodeName, /[\u0080-\uFFFF]/)) {
        _forceRemove(currentNode);
        return true;
      }

      /* Now let's check the element's type and name */
      var tagName = transformCaseFunc(currentNode.nodeName);

      /* Execute a hook if present */
      _executeHook('uponSanitizeElement', currentNode, {
        tagName: tagName,
        allowedTags: ALLOWED_TAGS
      });

      /* Detect mXSS attempts abusing namespace confusion */
      if (!_isNode(currentNode.firstElementChild) && (!_isNode(currentNode.content) || !_isNode(currentNode.content.firstElementChild)) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) {
        _forceRemove(currentNode);
        return true;
      }

      /* Mitigate a problem with templates inside select */
      if (tagName === 'select' && regExpTest(/