diff --git "a/tools/ui/node_modules/dompurify/dist/purify.js" "b/tools/ui/node_modules/dompurify/dist/purify.js"
new file mode 100644--- /dev/null
+++ "b/tools/ui/node_modules/dompurify/dist/purify.js"
@@ -0,0 +1,2496 @@
+/*! @license DOMPurify 3.4.13 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.4.13/LICENSE */
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.DOMPurify = factory());
+})(this, (function () { 'use strict';
+
+  function _arrayLikeToArray(r, a) {
+    (null == a || a > r.length) && (a = r.length);
+    for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e];
+    return n;
+  }
+  function _arrayWithHoles(r) {
+    if (Array.isArray(r)) return r;
+  }
+  function _iterableToArrayLimit(r, l) {
+    var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
+    if (null != t) {
+      var e,
+        n,
+        i,
+        u,
+        a = [],
+        f = true,
+        o = false;
+      try {
+        if (i = (t = t.call(r)).next, 0 === l) ; else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0);
+      } catch (r) {
+        o = true, n = r;
+      } finally {
+        try {
+          if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return;
+        } finally {
+          if (o) throw n;
+        }
+      }
+      return a;
+    }
+  }
+  function _nonIterableRest() {
+    throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+  }
+  function _slicedToArray(r, e) {
+    return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest();
+  }
+  function _unsupportedIterableToArray(r, a) {
+    if (r) {
+      if ("string" == typeof r) return _arrayLikeToArray(r, a);
+      var t = {}.toString.call(r).slice(8, -1);
+      return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
+    }
+  }
+
+  const entries = Object.entries,
+    setPrototypeOf = Object.setPrototypeOf,
+    isFrozen = Object.isFrozen,
+    getPrototypeOf = Object.getPrototypeOf,
+    getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+  let freeze = Object.freeze,
+    seal = Object.seal,
+    create = Object.create; // eslint-disable-line import/no-mutable-exports
+  let _ref = typeof Reflect !== 'undefined' && Reflect,
+    apply = _ref.apply,
+    construct = _ref.construct;
+  if (!freeze) {
+    freeze = function freeze(x) {
+      return x;
+    };
+  }
+  if (!seal) {
+    seal = function seal(x) {
+      return x;
+    };
+  }
+  if (!apply) {
+    apply = function apply(func, thisArg) {
+      for (var _len = arguments.length, args = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
+        args[_key - 2] = arguments[_key];
+      }
+      return func.apply(thisArg, args);
+    };
+  }
+  if (!construct) {
+    construct = function construct(Func) {
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+      return new Func(...args);
+    };
+  }
+  const arrayForEach = unapply(Array.prototype.forEach);
+  const arrayLastIndexOf = unapply(Array.prototype.lastIndexOf);
+  const arrayPop = unapply(Array.prototype.pop);
+  const arrayPush = unapply(Array.prototype.push);
+  const arraySplice = unapply(Array.prototype.splice);
+  const arrayIsArray = Array.isArray;
+  const stringToLowerCase = unapply(String.prototype.toLowerCase);
+  const stringToString = unapply(String.prototype.toString);
+  const stringMatch = unapply(String.prototype.match);
+  const stringReplace = unapply(String.prototype.replace);
+  const stringIndexOf = unapply(String.prototype.indexOf);
+  const stringTrim = unapply(String.prototype.trim);
+  const numberToString = unapply(Number.prototype.toString);
+  const booleanToString = unapply(Boolean.prototype.toString);
+  const bigintToString = typeof BigInt === 'undefined' ? null : unapply(BigInt.prototype.toString);
+  const symbolToString = typeof Symbol === 'undefined' ? null : unapply(Symbol.prototype.toString);
+  const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);
+  const objectToString = unapply(Object.prototype.toString);
+  const regExpTest = unapply(RegExp.prototype.test);
+  const typeErrorCreate = unconstruct(TypeError);
+  /**
+   * Creates a new function that calls the given function with a specified thisArg and arguments.
+   *
+   * @param func - The function to be wrapped and called.
+   * @returns A new function that calls the given function with a specified thisArg and arguments.
+   */
+  function unapply(func) {
+    return function (thisArg) {
+      if (thisArg instanceof RegExp) {
+        thisArg.lastIndex = 0;
+      }
+      for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
+        args[_key3 - 1] = arguments[_key3];
+      }
+      return apply(func, thisArg, args);
+    };
+  }
+  /**
+   * Creates a new function that constructs an instance of the given constructor function with the provided arguments.
+   *
+   * @param func - The constructor function to be wrapped and called.
+   * @returns A new function that constructs an instance of the given constructor function with the provided arguments.
+   */
+  function unconstruct(Func) {
+    return function () {
+      for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
+        args[_key4] = arguments[_key4];
+      }
+      return construct(Func, args);
+    };
+  }
+  /**
+   * Add properties to a lookup table
+   *
+   * @param set - The set to which elements will be added.
+   * @param array - The array containing elements to be added to the set.
+   * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set.
+   * @returns The modified set with added elements.
+   */
+  function addToSet(set, array) {
+    let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase;
+    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);
+    }
+    if (!arrayIsArray(array)) {
+      return set;
+    }
+    let l = array.length;
+    while (l--) {
+      let element = array[l];
+      if (typeof element === 'string') {
+        const lcElement = transformCaseFunc(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;
+  }
+  /**
+   * Clean up an array to harden against CSPP
+   *
+   * @param array - The array to be cleaned.
+   * @returns The cleaned version of the array
+   */
+  function cleanArray(array) {
+    for (let index = 0; index < array.length; index++) {
+      const isPropertyExist = objectHasOwnProperty(array, index);
+      if (!isPropertyExist) {
+        array[index] = null;
+      }
+    }
+    return array;
+  }
+  /**
+   * Shallow clone an object
+   *
+   * @param object - The object to be cloned.
+   * @returns A new object that copies the original.
+   */
+  function clone(object) {
+    const newObject = create(null);
+    for (const _ref2 of entries(object)) {
+      var _ref3 = _slicedToArray(_ref2, 2);
+      const property = _ref3[0];
+      const value = _ref3[1];
+      const isPropertyExist = objectHasOwnProperty(object, property);
+      if (isPropertyExist) {
+        if (arrayIsArray(value)) {
+          newObject[property] = cleanArray(value);
+        } else if (value && typeof value === 'object' && value.constructor === Object) {
+          newObject[property] = clone(value);
+        } else {
+          newObject[property] = value;
+        }
+      }
+    }
+    return newObject;
+  }
+  /**
+   * Convert non-node values into strings without depending on direct property access.
+   *
+   * @param value - The value to stringify.
+   * @returns A string representation of the provided value.
+   */
+  function stringifyValue(value) {
+    switch (typeof value) {
+      case 'string':
+        {
+          return value;
+        }
+      case 'number':
+        {
+          return numberToString(value);
+        }
+      case 'boolean':
+        {
+          return booleanToString(value);
+        }
+      case 'bigint':
+        {
+          return bigintToString ? bigintToString(value) : '0';
+        }
+      case 'symbol':
+        {
+          return symbolToString ? symbolToString(value) : 'Symbol()';
+        }
+      case 'undefined':
+        {
+          return objectToString(value);
+        }
+      case 'function':
+      case 'object':
+        {
+          if (value === null) {
+            return objectToString(value);
+          }
+          const valueAsRecord = value;
+          const valueToString = lookupGetter(valueAsRecord, 'toString');
+          if (typeof valueToString === 'function') {
+            const stringified = valueToString(valueAsRecord);
+            return typeof stringified === 'string' ? stringified : objectToString(stringified);
+          }
+          return objectToString(value);
+        }
+      default:
+        {
+          return objectToString(value);
+        }
+    }
+  }
+  /**
+   * This method automatically checks if the prop is function or getter and behaves accordingly.
+   *
+   * @param object - The object to look up the getter function in its prototype chain.
+   * @param prop - The property name for which to find the getter function.
+   * @returns The getter function found in the prototype chain or a fallback function.
+   */
+  function lookupGetter(object, prop) {
+    while (object !== null) {
+      const 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() {
+      return null;
+    }
+    return fallbackValue;
+  }
+  function isRegex(value) {
+    try {
+      regExpTest(value, '');
+      return true;
+    } catch (_unused) {
+      return false;
+    }
+  }
+
+  const html$1 = 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', 'search', 'section', 'select', 'shadow', 'slot', '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']);
+  const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'enterkeyhint', 'exportparts', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'inputmode', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'part', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);
+  const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', '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.
+  const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', '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']);
+  const mathMl$1 = 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', 'mprescripts']);
+  // Similarly to SVG, we want to know all MathML elements,
+  // even those that we disallow by default.
+  const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
+  const text = freeze(['#text']);
+
+  const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'command', 'commandfor', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'exportparts', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inert', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'part', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'slot', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns']);
+  const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'amplitude', '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', 'dominant-baseline', 'dur', 'edgemode', 'elevation', 'end', 'exponent', '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', 'intercept', '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', 'mask-type', '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', 'slope', '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', 'tablevalues', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-orientation', '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']);
+  const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnalign', 'columnlines', 'columnspacing', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lquote', 'lspace', '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']);
+  const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
+
+  const MUSTACHE_EXPR = seal(/{{[\w\W]*|^[\w\W]*}}/g);
+  const ERB_EXPR = seal(/<%[\w\W]*|^[\w\W]*%>/g);
+  const TMPLIT_EXPR = seal(/\${[\w\W]*/g);
+  const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape
+  const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
+  const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
+  );
+  const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
+  const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
+  );
+  const DOCTYPE_NAME = seal(/^html$/i);
+  const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i);
+  // Markup-significant character probes used by _sanitizeElements.
+  // Shared module-level instances are safe despite the sticky /g flags:
+  // unapply() resets lastIndex for RegExp receivers before every call.
+  const ELEMENT_MARKUP_PROBE = seal(/<[/\w!]/g);
+  const COMMENT_MARKUP_PROBE = seal(/<[/\w]/g);
+  const FALLBACK_TAG_CLOSE = seal(/<\/no(script|embed|frames)/i);
+  const SELF_CLOSING_TAG = seal(/\/>/i);
+
+  // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
+  const NODE_TYPE = {
+    element: 1,
+    attribute: 2,
+    text: 3,
+    cdataSection: 4,
+    entityReference: 5,
+    // Deprecated
+    entityNode: 6,
+    // Deprecated
+    processingInstruction: 7,
+    comment: 8,
+    document: 9,
+    documentType: 10,
+    documentFragment: 11,
+    notation: 12 // Deprecated
+  };
+  const 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 trustedTypes The policy factory.
+   * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
+   * @return The policy created (or null, if Trusted Types
+   * are not supported or creating the policy failed).
+   */
+  const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
+    if (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.
+    let suffix = null;
+    const ATTR_NAME = 'data-tt-policy-suffix';
+    if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
+      suffix = purifyHostElement.getAttribute(ATTR_NAME);
+    }
+    const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
+    try {
+      return trustedTypes.createPolicy(policyName, {
+        createHTML(html) {
+          return html;
+        },
+        createScriptURL(scriptUrl) {
+          return scriptUrl;
+        }
+      });
+    } 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;
+    }
+  };
+  const _createHooksMap = function _createHooksMap() {
+    return {
+      afterSanitizeAttributes: [],
+      afterSanitizeElements: [],
+      afterSanitizeShadowDOM: [],
+      beforeSanitizeAttributes: [],
+      beforeSanitizeElements: [],
+      beforeSanitizeShadowDOM: [],
+      uponSanitizeAttribute: [],
+      uponSanitizeElement: [],
+      uponSanitizeShadowNode: []
+    };
+  };
+  /**
+   * Resolve a set-valued configuration option: a fresh set built from
+   * cfg[key] when it is an own array property (seeded with a clone of
+   * options.base when given, case-normalized via options.transform),
+   * the fallback set otherwise.
+   *
+   * @param cfg the cloned, prototype-free configuration object
+   * @param key the configuration property to read
+   * @param fallback the set to use when the option is absent or not an array
+   * @param options transform and optional base set to merge into
+   * @returns the resolved set
+   */
+  const _resolveSetOption = function _resolveSetOption(cfg, key, fallback, options) {
+    return objectHasOwnProperty(cfg, key) && arrayIsArray(cfg[key]) ? addToSet(options.base ? clone(options.base) : {}, cfg[key], options.transform) : fallback;
+  };
+  function createDOMPurify() {
+    let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
+    const DOMPurify = root => createDOMPurify(root);
+    DOMPurify.version = '3.4.13';
+    DOMPurify.removed = [];
+    if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document || !window.Element) {
+      // Not running in a browser, provide a factory function
+      // so that you can pass your own Window
+      DOMPurify.isSupported = false;
+      return DOMPurify;
+    }
+    let document = window.document;
+    const originalDocument = document;
+    const currentScript = originalDocument.currentScript;
+    window.DocumentFragment;
+      const HTMLTemplateElement = window.HTMLTemplateElement,
+      Node = window.Node,
+      Element = window.Element,
+      NodeFilter = window.NodeFilter,
+      _window$NamedNodeMap = window.NamedNodeMap;
+      _window$NamedNodeMap === void 0 ? window.NamedNodeMap || window.MozNamedAttrMap : _window$NamedNodeMap;
+      window.HTMLFormElement;
+      const DOMParser = window.DOMParser,
+      trustedTypes = window.trustedTypes;
+    const ElementPrototype = Element.prototype;
+    const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
+    const remove = lookupGetter(ElementPrototype, 'remove');
+    const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
+    const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
+    const getParentNode = lookupGetter(ElementPrototype, 'parentNode');
+    const getShadowRoot = lookupGetter(ElementPrototype, 'shadowRoot');
+    const getAttributes = lookupGetter(ElementPrototype, 'attributes');
+    const getNodeType = Node && Node.prototype ? lookupGetter(Node.prototype, 'nodeType') : null;
+    const getNodeName = Node && Node.prototype ? lookupGetter(Node.prototype, 'nodeName') : null;
+    const getOwnerDocument = Node && Node.prototype ? lookupGetter(Node.prototype, 'ownerDocument') : null;
+    // 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') {
+      const template = document.createElement('template');
+      if (template.content && template.content.ownerDocument) {
+        document = template.content.ownerDocument;
+      }
+    }
+    let trustedTypesPolicy;
+    let emptyHTML = '';
+    // The instance's own internal Trusted Types policy. Unlike a caller-supplied
+    // `TRUSTED_TYPES_POLICY`, this is created at most once — Trusted Types throws
+    // on duplicate policy names — and is the only policy allowed to persist
+    // across configurations and survive `clearConfig()`.
+    let defaultTrustedTypesPolicy;
+    let defaultTrustedTypesPolicyResolved = false;
+    // Tracks whether we are already inside a call to the configured Trusted Types
+    // policy (`createHTML` or `createScriptURL`). If a supplied policy callback
+    // itself calls `DOMPurify.sanitize` (the cause of #1422), `sanitize` would
+    // re-enter the policy and recurse until the stack overflows. We detect that
+    // re-entry and throw a clear, actionable error instead. The guard is shared
+    // across both callbacks, because either one re-entering `sanitize` triggers
+    // the same unbounded recursion.
+    let IN_TRUSTED_TYPES_POLICY = 0;
+    const _assertNotInTrustedTypesPolicy = function _assertNotInTrustedTypesPolicy() {
+      if (IN_TRUSTED_TYPES_POLICY > 0) {
+        throw typeErrorCreate('A configured TRUSTED_TYPES_POLICY callback (createHTML or ' + 'createScriptURL) must not call DOMPurify.sanitize, as that causes ' + 'infinite recursion. Do not pass a policy whose callbacks wrap ' + 'DOMPurify as TRUSTED_TYPES_POLICY; see the "DOMPurify and Trusted ' + 'Types" section of the README.');
+      }
+    };
+    const _createTrustedHTML = function _createTrustedHTML(html) {
+      _assertNotInTrustedTypesPolicy();
+      IN_TRUSTED_TYPES_POLICY++;
+      try {
+        return trustedTypesPolicy.createHTML(html);
+      } finally {
+        IN_TRUSTED_TYPES_POLICY--;
+      }
+    };
+    const _createTrustedScriptURL = function _createTrustedScriptURL(scriptUrl) {
+      _assertNotInTrustedTypesPolicy();
+      IN_TRUSTED_TYPES_POLICY++;
+      try {
+        return trustedTypesPolicy.createScriptURL(scriptUrl);
+      } finally {
+        IN_TRUSTED_TYPES_POLICY--;
+      }
+    };
+    // Lazily resolve (and cache) the instance's internal default policy.
+    // Resolution is attempted at most once: a successful `createPolicy` cannot be
+    // repeated (Trusted Types throws on duplicate names), and a failed or
+    // unsupported attempt must not be retried on every parse.
+    const _getDefaultTrustedTypesPolicy = function _getDefaultTrustedTypesPolicy() {
+      if (!defaultTrustedTypesPolicyResolved) {
+        defaultTrustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
+        defaultTrustedTypesPolicyResolved = true;
+      }
+      return defaultTrustedTypesPolicy;
+    };
+    const _document = document,
+      implementation = _document.implementation,
+      createNodeIterator = _document.createNodeIterator,
+      createDocumentFragment = _document.createDocumentFragment,
+      getElementsByTagName = _document.getElementsByTagName;
+    const importNode = originalDocument.importNode;
+    let hooks = _createHooksMap();
+    /**
+     * Expose whether this browser supports running the full DOMPurify.
+     */
+    DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
+    const MUSTACHE_EXPR$1 = MUSTACHE_EXPR,
+      ERB_EXPR$1 = ERB_EXPR,
+      TMPLIT_EXPR$1 = TMPLIT_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,
+      CUSTOM_ELEMENT$1 = CUSTOM_ELEMENT;
+    let 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 */
+    let ALLOWED_TAGS = null;
+    const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
+    /* Allowed attribute names */
+    let ALLOWED_ATTR = null;
+    const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
+    /*
+     * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements.
+     * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
+     * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
+     * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
+     */
+    let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, {
+      tagNameCheck: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: null
+      },
+      attributeNameCheck: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: null
+      },
+      allowCustomizedBuiltInElements: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: false
+      }
+    }));
+    /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
+    let FORBID_TAGS = null;
+    /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
+    let FORBID_ATTR = null;
+    /* Config object to store ADD_TAGS/ADD_ATTR functions (when used as functions) */
+    const EXTRA_ELEMENT_HANDLING = Object.seal(create(null, {
+      tagCheck: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: null
+      },
+      attributeCheck: {
+        writable: true,
+        configurable: false,
+        enumerable: true,
+        value: null
+      }
+    }));
+    /* Decide if ARIA attributes are okay */
+    let ALLOW_ARIA_ATTR = true;
+    /* Decide if custom data attributes are okay */
+    let ALLOW_DATA_ATTR = true;
+    /* Decide if unknown protocols are okay */
+    let ALLOW_UNKNOWN_PROTOCOLS = false;
+    /* Decide if self-closing tags in attributes are allowed.
+     * Usually removed due to a mXSS issue in jQuery 3.0 */
+    let ALLOW_SELF_CLOSE_IN_ATTR = true;
+    /* Output should be safe for common template engines.
+     * This means, DOMPurify removes data attributes, mustaches and ERB
+     */
+    let SAFE_FOR_TEMPLATES = false;
+    /* Output should be safe even for XML used within HTML and alike.
+     * This means, DOMPurify removes comments when containing risky content.
+     */
+    let SAFE_FOR_XML = true;
+    /* Decide if document with <html>... should be returned */
+    let WHOLE_DOCUMENT = false;
+    /* Track whether config is already set on this instance of DOMPurify. */
+    let SET_CONFIG = false;
+    /* Pristine allowlist bindings captured at setConfig() time. On the
+     * persistent-config path sanitize() restores the sets from these before
+     * the per-walk hook clone-guard, so a hook's in-call widening cannot
+     * carry across calls. Null until setConfig() is called; reset by
+     * clearConfig(). */
+    let SET_CONFIG_ALLOWED_TAGS = null;
+    let SET_CONFIG_ALLOWED_ATTR = null;
+    /* Decide if all elements (e.g. style, script) must be children of
+     * document.body. By default, browsers might move them to document.head */
+    let 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
+     */
+    let 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) */
+    let RETURN_DOM_FRAGMENT = false;
+    /* Try to return a Trusted Type object instead of a string, return a string in
+     * case Trusted Types are not supported  */
+    let RETURN_TRUSTED_TYPE = false;
+    /* Output should be free from DOM clobbering attacks?
+     * This sanitizes markups named with colliding, clobberable built-in DOM APIs.
+     */
+    let SANITIZE_DOM = true;
+    /* Achieve full DOM Clobbering protection by isolating the namespace of named
+     * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
+     *
+     * HTML/DOM spec rules that enable DOM Clobbering:
+     *   - Named Access on Window (§7.3.3)
+     *   - DOM Tree Accessors (§3.1.5)
+     *   - Form Element Parent-Child Relations (§4.10.3)
+     *   - Iframe srcdoc / Nested WindowProxies (§4.8.5)
+     *   - HTMLCollection (§4.2.10.2)
+     *
+     * Namespace isolation is implemented by prefixing `id` and `name` attributes
+     * with a constant string, i.e., `user-content-`
+     */
+    let SANITIZE_NAMED_PROPS = false;
+    const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
+    /* Keep element content when removing element? */
+    let 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 */
+    let IN_PLACE = false;
+    /* Allow usage of profiles like html, svg and mathMl */
+    let USE_PROFILES = {};
+    /* Tags to ignore content of when KEEP_CONTENT is true */
+    let FORBID_CONTENTS = null;
+    const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script',
+    // <selectedcontent> mirrors the selected <option>'s subtree, cloned by
+    // the UA (customizable <select>) — including any on* handlers — and the
+    // engine re-mirrors synchronously whenever a removal changes which
+    // option/selectedcontent is current, even inside DOMPurify's inert
+    // DOMParser document. Hoisting its children on removal re-inserts a fresh
+    // mirror target ahead of the walk, which the engine refills, looping
+    // forever (DoS) and amplifying output. Dropping its content on removal
+    // (rather than hoisting) breaks that cascade; the content is a duplicate
+    // of the option, which is sanitized on its own. See campaign-3 F1/F6.
+    'selectedcontent', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);
+    /* Tags that are safe for data: URIs */
+    let DATA_URI_TAGS = null;
+    const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
+    /* Attributes safe for values like "javascript:" */
+    let URI_SAFE_ATTRIBUTES = null;
+    const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
+    const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+    const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+    const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+    /* Document namespace */
+    let NAMESPACE = HTML_NAMESPACE;
+    let IS_EMPTY_INPUT = false;
+    /* Allowed XHTML+XML namespaces */
+    let ALLOWED_NAMESPACES = null;
+    const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
+    const DEFAULT_MATHML_TEXT_INTEGRATION_POINTS = freeze(['mi', 'mo', 'mn', 'ms', 'mtext']);
+    let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, DEFAULT_MATHML_TEXT_INTEGRATION_POINTS);
+    const DEFAULT_HTML_INTEGRATION_POINTS = freeze(['annotation-xml']);
+    let HTML_INTEGRATION_POINTS = addToSet({}, DEFAULT_HTML_INTEGRATION_POINTS);
+    // Certain elements are allowed in both SVG and HTML
+    // namespace. We need to specify them explicitly
+    // so that they don't get erroneously deleted from
+    // HTML namespace.
+    const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
+    /* Parsing of strict XHTML documents */
+    let PARSER_MEDIA_TYPE = null;
+    const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
+    const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
+    let transformCaseFunc = null;
+    /* Keep a reference to config to pass to hooks */
+    let CONFIG = null;
+    /* Ideally, do not touch anything below this line */
+    /* ______________________________________________ */
+    const formElement = document.createElement('form');
+    const isRegexOrFunction = function isRegexOrFunction(testValue) {
+      return testValue instanceof RegExp || testValue instanceof Function;
+    };
+    /**
+     * _parseConfig
+     *
+     * @param cfg optional config literal
+     */
+    // eslint-disable-next-line complexity
+    const _parseConfig = function _parseConfig() {
+      let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      if (CONFIG && CONFIG === cfg) {
+        return;
+      }
+      /* Shield configuration object from tampering */
+      if (!cfg || typeof cfg !== 'object') {
+        cfg = {};
+      }
+      /* Shield configuration object from prototype pollution */
+      cfg = clone(cfg);
+      PARSER_MEDIA_TYPE =
+      // eslint-disable-next-line unicorn/prefer-includes
+      SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_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' ? stringToString : stringToLowerCase;
+      /* Set configuration parameters */
+      ALLOWED_TAGS = _resolveSetOption(cfg, 'ALLOWED_TAGS', DEFAULT_ALLOWED_TAGS, {
+        transform: transformCaseFunc
+      });
+      ALLOWED_ATTR = _resolveSetOption(cfg, 'ALLOWED_ATTR', DEFAULT_ALLOWED_ATTR, {
+        transform: transformCaseFunc
+      });
+      ALLOWED_NAMESPACES = _resolveSetOption(cfg, 'ALLOWED_NAMESPACES', DEFAULT_ALLOWED_NAMESPACES, {
+        transform: stringToString
+      });
+      URI_SAFE_ATTRIBUTES = _resolveSetOption(cfg, 'ADD_URI_SAFE_ATTR', DEFAULT_URI_SAFE_ATTRIBUTES, {
+        transform: transformCaseFunc,
+        base: DEFAULT_URI_SAFE_ATTRIBUTES
+      });
+      DATA_URI_TAGS = _resolveSetOption(cfg, 'ADD_DATA_URI_TAGS', DEFAULT_DATA_URI_TAGS, {
+        transform: transformCaseFunc,
+        base: DEFAULT_DATA_URI_TAGS
+      });
+      FORBID_CONTENTS = _resolveSetOption(cfg, 'FORBID_CONTENTS', DEFAULT_FORBID_CONTENTS, {
+        transform: transformCaseFunc
+      });
+      FORBID_TAGS = _resolveSetOption(cfg, 'FORBID_TAGS', clone({}), {
+        transform: transformCaseFunc
+      });
+      FORBID_ATTR = _resolveSetOption(cfg, 'FORBID_ATTR', clone({}), {
+        transform: transformCaseFunc
+      });
+      USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES && typeof cfg.USE_PROFILES === 'object' ? clone(cfg.USE_PROFILES) : 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
+      ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
+      SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
+      SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true
+      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_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
+      SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
+      KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
+      IN_PLACE = cfg.IN_PLACE || false; // Default false
+      IS_ALLOWED_URI$1 = isRegex(cfg.ALLOWED_URI_REGEXP) ? cfg.ALLOWED_URI_REGEXP : IS_ALLOWED_URI; // Default regexp
+      NAMESPACE = typeof cfg.NAMESPACE === 'string' ? cfg.NAMESPACE : HTML_NAMESPACE; // Default HTML namespace
+      MATHML_TEXT_INTEGRATION_POINTS = objectHasOwnProperty(cfg, 'MATHML_TEXT_INTEGRATION_POINTS') && cfg.MATHML_TEXT_INTEGRATION_POINTS && typeof cfg.MATHML_TEXT_INTEGRATION_POINTS === 'object' ? clone(cfg.MATHML_TEXT_INTEGRATION_POINTS) : addToSet({}, DEFAULT_MATHML_TEXT_INTEGRATION_POINTS); // Default built-in map
+      HTML_INTEGRATION_POINTS = objectHasOwnProperty(cfg, 'HTML_INTEGRATION_POINTS') && cfg.HTML_INTEGRATION_POINTS && typeof cfg.HTML_INTEGRATION_POINTS === 'object' ? clone(cfg.HTML_INTEGRATION_POINTS) : addToSet({}, DEFAULT_HTML_INTEGRATION_POINTS); // Default built-in map
+      const customElementHandling = objectHasOwnProperty(cfg, 'CUSTOM_ELEMENT_HANDLING') && cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING === 'object' ? clone(cfg.CUSTOM_ELEMENT_HANDLING) : create(null);
+      CUSTOM_ELEMENT_HANDLING = create(null);
+      if (objectHasOwnProperty(customElementHandling, 'tagNameCheck') && isRegexOrFunction(customElementHandling.tagNameCheck)) {
+        CUSTOM_ELEMENT_HANDLING.tagNameCheck = customElementHandling.tagNameCheck; // Default undefined
+      }
+      if (objectHasOwnProperty(customElementHandling, 'attributeNameCheck') && isRegexOrFunction(customElementHandling.attributeNameCheck)) {
+        CUSTOM_ELEMENT_HANDLING.attributeNameCheck = customElementHandling.attributeNameCheck; // Default undefined
+      }
+      if (objectHasOwnProperty(customElementHandling, 'allowCustomizedBuiltInElements') && typeof customElementHandling.allowCustomizedBuiltInElements === 'boolean') {
+        CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = customElementHandling.allowCustomizedBuiltInElements; // Default undefined
+      }
+      seal(CUSTOM_ELEMENT_HANDLING);
+      if (SAFE_FOR_TEMPLATES) {
+        ALLOW_DATA_ATTR = false;
+      }
+      if (RETURN_DOM_FRAGMENT) {
+        RETURN_DOM = true;
+      }
+      /* Parse profile info */
+      if (USE_PROFILES) {
+        ALLOWED_TAGS = addToSet({}, text);
+        ALLOWED_ATTR = create(null);
+        if (USE_PROFILES.html === true) {
+          addToSet(ALLOWED_TAGS, html$1);
+          addToSet(ALLOWED_ATTR, html);
+        }
+        if (USE_PROFILES.svg === true) {
+          addToSet(ALLOWED_TAGS, svg$1);
+          addToSet(ALLOWED_ATTR, svg);
+          addToSet(ALLOWED_ATTR, xml);
+        }
+        if (USE_PROFILES.svgFilters === true) {
+          addToSet(ALLOWED_TAGS, svgFilters);
+          addToSet(ALLOWED_ATTR, svg);
+          addToSet(ALLOWED_ATTR, xml);
+        }
+        if (USE_PROFILES.mathMl === true) {
+          addToSet(ALLOWED_TAGS, mathMl$1);
+          addToSet(ALLOWED_ATTR, mathMl);
+          addToSet(ALLOWED_ATTR, xml);
+        }
+      }
+      /* Always reset function-based ADD_TAGS / ADD_ATTR checks to prevent
+       * leaking across calls when switching from function to array config */
+      EXTRA_ELEMENT_HANDLING.tagCheck = null;
+      EXTRA_ELEMENT_HANDLING.attributeCheck = null;
+      /* Merge configuration parameters */
+      if (objectHasOwnProperty(cfg, 'ADD_TAGS')) {
+        if (typeof cfg.ADD_TAGS === 'function') {
+          EXTRA_ELEMENT_HANDLING.tagCheck = cfg.ADD_TAGS;
+        } else if (arrayIsArray(cfg.ADD_TAGS)) {
+          if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
+            ALLOWED_TAGS = clone(ALLOWED_TAGS);
+          }
+          addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
+        }
+      }
+      if (objectHasOwnProperty(cfg, 'ADD_ATTR')) {
+        if (typeof cfg.ADD_ATTR === 'function') {
+          EXTRA_ELEMENT_HANDLING.attributeCheck = cfg.ADD_ATTR;
+        } else if (arrayIsArray(cfg.ADD_ATTR)) {
+          if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
+            ALLOWED_ATTR = clone(ALLOWED_ATTR);
+          }
+          addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
+        }
+      }
+      if (objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') && arrayIsArray(cfg.ADD_URI_SAFE_ATTR)) {
+        addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
+      }
+      if (objectHasOwnProperty(cfg, 'FORBID_CONTENTS') && arrayIsArray(cfg.FORBID_CONTENTS)) {
+        if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
+          FORBID_CONTENTS = clone(FORBID_CONTENTS);
+        }
+        addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
+      }
+      if (objectHasOwnProperty(cfg, 'ADD_FORBID_CONTENTS') && arrayIsArray(cfg.ADD_FORBID_CONTENTS)) {
+        if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
+          FORBID_CONTENTS = clone(FORBID_CONTENTS);
+        }
+        addToSet(FORBID_CONTENTS, cfg.ADD_FORBID_CONTENTS, transformCaseFunc);
+      }
+      /* 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;
+      }
+      // Re-derive the active Trusted Types policy from this configuration on
+      // every parse. The active policy must never be sticky closure state that
+      // outlives the config that set it: a caller-supplied policy left in place
+      // after `clearConfig()` — or after a later call that supplied none, or
+      // `TRUSTED_TYPES_POLICY: null` — could sign a subsequent "default"
+      // `RETURN_TRUSTED_TYPE` result with a foreign, possibly unsafe policy.
+      // See GHSA-vxr8-fq34-vvx9.
+      if (cfg.TRUSTED_TYPES_POLICY) {
+        if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
+          throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
+        }
+        if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
+          throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
+        }
+        // A caller-supplied policy applies to this configuration only.
+        const previousTrustedTypesPolicy = trustedTypesPolicy;
+        trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;
+        // Sign local variables required by `sanitize`. If the supplied policy's
+        // `createHTML` is circular (i.e. it calls `DOMPurify.sanitize`), this
+        // throws via the re-entrancy guard. Restore the previous policy first so
+        // the instance is not left in a poisoned state. See #1422.
+        try {
+          emptyHTML = _createTrustedHTML('');
+        } catch (error) {
+          trustedTypesPolicy = previousTrustedTypesPolicy;
+          throw error;
+        }
+      } else if (cfg.TRUSTED_TYPES_POLICY === null) {
+        // Explicit opt-out for this call: perform no Trusted Types signing and
+        // create nothing (so a strict `trusted-types` CSP that disallows a
+        // `dompurify` policy can still call `sanitize` from inside its own
+        // policy — see #1422). Resetting to `undefined` rather than a sticky
+        // `null` also drops any previously retained caller policy, so it cannot
+        // resurface on a later call, while still allowing the next config-less
+        // call to restore the internal default policy. See GHSA-vxr8-fq34-vvx9.
+        trustedTypesPolicy = undefined;
+        emptyHTML = '';
+      } else {
+        // No policy supplied: keep the currently active policy if one is set — a
+        // previously supplied policy is intentionally sticky across config-less
+        // calls — otherwise fall back to the instance's own internal policy,
+        // created at most once. (A policy supplied for a *single* call still
+        // lingers by design; what must not linger is a policy whose configuration
+        // has been torn down via `clearConfig()`, which restores the default.)
+        if (trustedTypesPolicy === undefined) {
+          trustedTypesPolicy = _getDefaultTrustedTypesPolicy();
+        }
+        // Sign internal variables only when a policy is active. A falsy policy
+        // (Trusted Types unsupported, creation failed, or an explicit opt-out)
+        // leaves `emptyHTML` as a plain string, so we never call `.createHTML` on
+        // a non-policy and throw. See #1422.
+        if (trustedTypesPolicy && typeof emptyHTML === 'string') {
+          emptyHTML = _createTrustedHTML('');
+        }
+      }
+      // Prevent further manipulation of configuration.
+      // Not available in IE8, Safari 5, etc.
+      if (freeze) {
+        freeze(cfg);
+      }
+      CONFIG = cfg;
+    };
+    /* Keep track of all possible SVG and MathML tags
+     * so that we can perform the namespace checks
+     * correctly. */
+    const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]);
+    const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]);
+    /**
+     * Namespace rules for an element in the SVG namespace.
+     *
+     * @param tagName the element's lowercase tag name
+     * @param parent the (possibly simulated) parent node
+     * @param parentTagName the parent's lowercase tag name
+     * @returns true if a spec-compliant parser could produce this element
+     */
+    const _checkSvgNamespace = function _checkSvgNamespace(tagName, parent, parentTagName) {
+      // The only way to switch from HTML namespace to SVG
+      // is via <svg>. 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 the parent is either <annotation-xml> or a MathML
+      // text integration point.
+      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]);
+    };
+    /**
+     * Namespace rules for an element in the MathML namespace.
+     *
+     * @param tagName the element's lowercase tag name
+     * @param parent the (possibly simulated) parent node
+     * @param parentTagName the parent's lowercase tag name
+     * @returns true if a spec-compliant parser could produce this element
+     */
+    const _checkMathMlNamespace = function _checkMathMlNamespace(tagName, parent, parentTagName) {
+      // The only way to switch from HTML namespace to MathML
+      // is via <math>. 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
+      // <math> 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]);
+    };
+    /**
+     * Namespace rules for an element in the HTML namespace.
+     *
+     * @param tagName the element's lowercase tag name
+     * @param parent the (possibly simulated) parent node
+     * @param parentTagName the parent's lowercase tag name
+     * @returns true if a spec-compliant parser could produce this element
+     */
+    const _checkHtmlNamespace = function _checkHtmlNamespace(tagName, parent, parentTagName) {
+      // 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;
+      }
+      // We disallow tags that are specific for MathML
+      // or SVG and should never appear in HTML namespace
+      return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
+    };
+    /**
+     * @param element a DOM element whose namespace is being checked
+     * @returns Return false if the element has a
+     *  namespace that a spec-compliant parser would never
+     *  return. Return true otherwise.
+     */
+    const _checkValidNamespace = function _checkValidNamespace(element) {
+      let 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: NAMESPACE,
+          tagName: 'template'
+        };
+      }
+      const tagName = stringToLowerCase(element.tagName);
+      const parentTagName = stringToLowerCase(parent.tagName);
+      if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
+        return false;
+      }
+      if (element.namespaceURI === SVG_NAMESPACE) {
+        return _checkSvgNamespace(tagName, parent, parentTagName);
+      }
+      if (element.namespaceURI === MATHML_NAMESPACE) {
+        return _checkMathMlNamespace(tagName, parent, parentTagName);
+      }
+      if (element.namespaceURI === HTML_NAMESPACE) {
+        return _checkHtmlNamespace(tagName, parent, parentTagName);
+      }
+      // For XHTML and XML documents that support custom namespaces
+      if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
+        return true;
+      }
+      // The code should never reach this place (this means
+      // that the element somehow got namespace that is not
+      // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
+      // Return false just in case.
+      return false;
+    };
+    /**
+     * _forceRemove
+     *
+     * @param node a DOM node
+     */
+    const _forceRemove = function _forceRemove(node) {
+      arrayPush(DOMPurify.removed, {
+        element: node
+      });
+      try {
+        // eslint-disable-next-line unicorn/prefer-dom-node-remove
+        getParentNode(node).removeChild(node);
+      } catch (_) {
+        /* The normal detach failed — this is reached for a parentless node
+           (getParentNode() is null, so .removeChild throws). Element.prototype
+           .remove() is itself a spec no-op on a parentless node, so a recorded
+           "removal" would otherwise hand the caller back an intact,
+           payload-bearing node (e.g. a detached IN_PLACE root the mXSS canary or
+           the style-with-element-child rule decided to kill). Fail closed by
+           throwing — exactly as a clobbered root does at the IN_PLACE entry —
+           rather than trying to "neutralize" the node via its own methods.
+           Neutralizing would mean calling getAttributeNames()/removeAttribute()
+           on the node, both of which a <form> root can clobber via a named child
+           (and _isClobbered does not even probe getAttributeNames), so the
+           neutralize step could itself be silently defeated, leaving the payload
+           intact. A throw touches only the cached, clobber-safe remove() and
+           getParentNode(). Generalizes GHSA-r47g-fvhr-h676 (clobbered-form root)
+           to every root-kill reason. REPORT-3.
+                  This lives inside the catch, so it never fires for a normally-removed
+           in-tree node: those have a parent, removeChild() succeeds, and the
+           catch is not entered. Only a kept (parentless) root reaches here. */
+        remove(node);
+        if (!getParentNode(node)) {
+          throw typeErrorCreate('a node selected for removal could not be detached from its tree ' + 'and cannot be safely returned; refusing to sanitize in place');
+        }
+      }
+    };
+    /**
+     * _neutralizeRoot
+     *
+     * Fail-closed teardown of an in-place root after the sanitize walk aborts
+     * (campaign-3 F2). An internal throw mid-walk — e.g. a page-registered
+     * custom element's reaction detaches a node so `_forceRemove`'s deliberate
+     * parentless guard throws, or any other re-entrant engine mutation — would
+     * otherwise leave the caller's *live* tree half-sanitized, with everything
+     * after the abort point still carrying its handlers. There is no safe way
+     * to resume the walk (the tree mutated under us), so we strip the root bare:
+     * remove every child and every attribute, then let the caller's catch see
+     * the original error. Clobber-safe (cached `remove`/`childNodes`/`attributes`
+     * getters; the root was already clobber-pre-flighted at the IN_PLACE entry).
+     *
+     * @param root the in-place root to empty
+     */
+    const _neutralizeRoot = function _neutralizeRoot(root) {
+      /* Strip every disallowed attribute (on* handlers included) off the whole
+         subtree BEFORE detaching anything. Detaching first would hand back
+         handler-bearing originals (e.g. an already-loading `<img onerror>`)
+         whose queued resource event still fires in page scope after we throw.
+         Clobber-safe reads; a doomed clobbered node's own attributes are
+         irrelevant while its non-clobbered descendants are reached and scrubbed. */
+      _neutralizeSubtree(root);
+      const childNodes = getChildNodes(root);
+      if (childNodes) {
+        const snapshot = [];
+        arrayForEach(childNodes, child => {
+          arrayPush(snapshot, child);
+        });
+        arrayForEach(snapshot, child => {
+          try {
+            remove(child);
+          } catch (_) {
+            /* Best-effort teardown; a still-attached child is handled below */
+          }
+        });
+      }
+      const attributes = getAttributes(root);
+      if (attributes) {
+        for (let i = attributes.length - 1; i >= 0; --i) {
+          const attribute = attributes[i];
+          const name = attribute && attribute.name;
+          if (typeof name === 'string') {
+            try {
+              root.removeAttribute(name);
+            } catch (_) {
+              /* Clobbered removeAttribute — ignore (fail-closed best effort) */
+            }
+          }
+        }
+      }
+    };
+    /**
+     * _removeAttribute
+     *
+     * @param name an Attribute name
+     * @param element a DOM node
+     */
+    const _removeAttribute = function _removeAttribute(name, element) {
+      try {
+        arrayPush(DOMPurify.removed, {
+          attribute: element.getAttributeNode(name),
+          from: element
+        });
+      } catch (_) {
+        arrayPush(DOMPurify.removed, {
+          attribute: null,
+          from: element
+        });
+      }
+      element.removeAttribute(name);
+      // We void attribute values for unremovable "is" attributes
+      if (name === 'is') {
+        if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
+          try {
+            _forceRemove(element);
+          } catch (_) {}
+        } else {
+          try {
+            element.setAttribute(name, '');
+          } catch (_) {}
+        }
+      }
+    };
+    /**
+     * _stripDisallowedAttributes
+     *
+     * Removes every attribute the active configuration does not allow from a
+     * single element, using the same allowlist as the main attribute pass (so
+     * `on*` handlers go, but no `/^on/` blocklist is introduced). Used only to
+     * neutralise nodes that are being discarded from an in-place tree.
+     *
+     * @param element the element to strip
+     */
+    const _stripDisallowedAttributes = function _stripDisallowedAttributes(element) {
+      const attributes = getAttributes(element);
+      if (!attributes) {
+        return;
+      }
+      for (let i = attributes.length - 1; i >= 0; --i) {
+        const attribute = attributes[i];
+        const name = attribute && attribute.name;
+        if (typeof name !== 'string' || ALLOWED_ATTR[transformCaseFunc(name)]) {
+          continue;
+        }
+        try {
+          element.removeAttribute(name);
+        } catch (_) {
+          /* Clobbered removeAttribute on a doomed node — ignore */
+        }
+      }
+    };
+    /**
+     * _neutralizeSubtree
+     *
+     * Completes the audit-5 F1 fix across every removal path. The KEEP_CONTENT
+     * move-hoist neutralises only disallowed-tag removals; clobber, mXSS-canary,
+     * namespace, comment, processing-instruction and KEEP_CONTENT:false removals
+     * all drop their subtree wholesale via `_forceRemove`. On the IN_PLACE path
+     * those dropped nodes are detached from the caller's LIVE tree but a
+     * handler-bearing original among them (an `<img onerror>`/`<video>` that was
+     * loading) keeps its queued resource event, which fires in page scope after
+     * sanitize returns. This walks a removed subtree and strips every attribute
+     * the active configuration does not allow — so `on*` handlers are cancelled
+     * through the SAME allowlist that governs kept nodes, not a separate `/^on/`
+     * blocklist. Run synchronously before sanitize returns, i.e. before any
+     * queued event can fire. Hook-free by design: these nodes leave the output,
+     * so firing attribute hooks for them would be surprising. Clobber-safe reads;
+     * a doomed clobbered node may shadow `removeAttribute` (its own attributes are
+     * irrelevant — it is discarded — while its non-clobbered descendants, e.g.
+     * the `<img>`, are reached and scrubbed).
+     *
+     * @param root the root of a removed subtree to neutralise
+     */
+    const _neutralizeSubtree = function _neutralizeSubtree(root) {
+      const stack = [root];
+      while (stack.length > 0) {
+        const node = stack.pop();
+        const nodeType = getNodeType ? getNodeType(node) : node.nodeType;
+        if (nodeType === NODE_TYPE.element) {
+          _stripDisallowedAttributes(node);
+        }
+        const childNodes = getChildNodes(node);
+        if (childNodes) {
+          for (let i = childNodes.length - 1; i >= 0; --i) {
+            stack.push(childNodes[i]);
+          }
+        }
+      }
+    };
+    /**
+     * _neutralizePatchLinkage
+     *
+     * IN_PLACE entry pre-pass (declarative-partial-updates / streaming
+     * hardening, https://github.com/WICG/declarative-partial-updates).
+     *
+     * The main walk strips patch linkage (`for`/`patchsrc`) and removes range
+     * markers (PIs / markup comments) node-by-node, in document order, AS it
+     * reaches each node. On a live in-place root that leaves a window: from the
+     * moment the root is connected until the walk arrives at a given node, that
+     * node's linkage is live. A patch applied on connection/stream can fire as
+     * a microtask during the walk and inject or teleport an unsanitized DOM
+     * range into a region the iterator has already passed and will not revisit,
+     * so the post-return "tree is sanitized" contract is violated. Sweep the
+     * whole tree once up front and sever every linkage before the walk begins,
+     * closing that window.
+     *
+     * This CANNOT undo a patch that already fired before sanitize ran — that is
+     * the irreducible "do not IN_PLACE a live-connected attacker tree" caveat —
+     * but it closes everything from sanitize-start onward. Gated on SAFE_FOR_XML
+     * to group with the rest of the declarative-partial-updates handling and
+     * stay overridable, consistent with the codebase.
+     *
+     * Clobber-safe traversal (cached childNodes getter); per-node try/catch so a
+     * clobbered root cannot defeat the sweep of its non-clobbered descendants.
+     *
+     * NOTE (pending real-Chrome confirmation, see test/declarative-patch-probe
+     * .html Q1): this mirrors the existing policy of keeping `for` on
+     * <label>/<output>. If the shipping feature can drive a patch through a
+     * surviving `for`-on-label/output + `id` pair, this pre-pass and the
+     * attribute check at _isBasicCustomElement's caller must additionally drop
+     * that pair on the IN_PLACE path. Left as-is until the taxonomy is verified.
+     *
+     * @param root the in-place root to sweep
+     */
+    const _neutralizePatchLinkage = function _neutralizePatchLinkage(root) {
+      if (!SAFE_FOR_XML) {
+        return;
+      }
+      const stack = [root];
+      while (stack.length > 0) {
+        const node = stack.pop();
+        const nodeType = getNodeType ? getNodeType(node) : node.nodeType;
+        /* Remove range markers (the target side of a patch linkage): every
+           processing instruction, and any markup-bearing comment. */
+        if (nodeType === NODE_TYPE.processingInstruction || nodeType === NODE_TYPE.comment && regExpTest(COMMENT_MARKUP_PROBE, node.data)) {
+          try {
+            remove(node);
+          } catch (_) {
+            /* Best-effort */
+          }
+          continue;
+        }
+        /* Strip patch-source attributes (the source side) off elements. */
+        if (nodeType === NODE_TYPE.element) {
+          const element = node;
+          const lcTag = transformCaseFunc(getNodeName ? getNodeName(node) : node.nodeName);
+          try {
+            if (element.hasAttribute && element.hasAttribute('patchsrc')) {
+              element.removeAttribute('patchsrc');
+            }
+            if (element.hasAttribute && element.hasAttribute('for') && lcTag !== 'label' && lcTag !== 'output') {
+              element.removeAttribute('for');
+            }
+          } catch (_) {
+            /* Clobbered removeAttribute/hasAttribute on a doomed node — ignore */
+          }
+        }
+        const childNodes = getChildNodes(node);
+        if (childNodes) {
+          for (let i = childNodes.length - 1; i >= 0; --i) {
+            stack.push(childNodes[i]);
+          }
+        }
+      }
+    };
+    /**
+     * _initDocument
+     *
+     * @param dirty - a string of dirty markup
+     * @return a DOM, filled with the dirty markup
+     */
+    const _initDocument = function _initDocument(dirty) {
+      /* Create a HTML document */
+      let doc = null;
+      let leadingWhitespace = null;
+      if (FORCE_BODY) {
+        dirty = '<remove></remove>' + dirty;
+      } else {
+        /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
+        const matches = stringMatch(dirty, /^[\r\n\t ]+/);
+        leadingWhitespace = matches && matches[0];
+      }
+      if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
+        // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
+        dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
+      }
+      const dirtyPayload = trustedTypesPolicy ? _createTrustedHTML(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 ? emptyHTML : dirtyPayload;
+        } catch (_) {
+          // Syntax error if dirtyPayload is invalid xml
+        }
+      }
+      const 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;
+    };
+    /**
+     * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.
+     *
+     * @param root The root element or node to start traversing on.
+     * @return The created NodeIterator
+     */
+    const _createNodeIterator = function _createNodeIterator(root) {
+      /* Read ownerDocument through the cached Node.prototype getter, never the
+         direct property. HTMLFormElement has [LegacyOverrideBuiltIns], so a
+         clobbering child (<input name="ownerDocument"> or a form-associated
+         external input) shadows the prototype getter and makes a direct read
+         return that <input>. createNodeIterator.call(<input>, ...) then throws
+         "Illegal invocation", and on the IN_PLACE path that throw lands before
+         the walk's fail-closed barrier - leaving the caller's live tree, with
+         any already-armed handler in it, un-neutralized. The cached getter
+         returns the real Document regardless of the clobber. */
+      const doc = getOwnerDocument ? getOwnerDocument(root) : root.ownerDocument;
+      return createNodeIterator.call(doc || root, root,
+      // eslint-disable-next-line no-bitwise
+      NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null);
+    };
+    /**
+     * Replace template expression syntax (mustache, ERB, template
+     * literal) with a space; shared by all SAFE_FOR_TEMPLATES scrub
+     * sites. Order matters: mustache, then ERB, then template literal.
+     *
+     * @param value the string to scrub
+     * @returns the scrubbed string
+     */
+    const _stripTemplateExpressions = function _stripTemplateExpressions(value) {
+      value = stringReplace(value, MUSTACHE_EXPR$1, ' ');
+      value = stringReplace(value, ERB_EXPR$1, ' ');
+      value = stringReplace(value, TMPLIT_EXPR$1, ' ');
+      return value;
+    };
+    /**
+     * Strip template-engine expressions ({{...}}, ${...}, <%...%>) from the
+     * character data of an element subtree. Used as the final safety net for
+     * SAFE_FOR_TEMPLATES on every DOM-returning code path so that expressions
+     * which only form after text-node normalization (e.g. fragments split across
+     * stripped elements) cannot survive into a template-evaluating framework.
+     *
+     * Walks text/comment/CDATA/processing-instruction nodes and mutates `.data`
+     * in place rather than round-tripping through innerHTML. This preserves
+     * descendant node references (important for IN_PLACE callers), avoids a
+     * serialize/reparse cycle, and reads literal character data — which means
+     * `<%...%>` in text content matches the ERB regex against its real bytes
+     * instead of the HTML-entity-escaped form innerHTML would produce.
+     *
+     * Attribute values are not visited here; SAFE_FOR_TEMPLATES handling for
+     * attributes is performed during the per-node `_sanitizeAttributes` pass.
+     *
+     * @param node The root element whose character data should be scrubbed.
+     */
+    const _scrubTemplateExpressions2 = function _scrubTemplateExpressions(node) {
+      var _node$querySelectorAl;
+      node.normalize();
+      /* Clobber-safe ownerDocument read, same reasoning as _createNodeIterator:
+         under SAFE_FOR_TEMPLATES this runs on the live IN_PLACE root, which may
+         carry a form-named-getter override of ownerDocument. */
+      const doc = getOwnerDocument ? getOwnerDocument(node) : node.ownerDocument;
+      const walker = createNodeIterator.call(doc || node, node,
+      // eslint-disable-next-line no-bitwise
+      NodeFilter.SHOW_TEXT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_CDATA_SECTION | NodeFilter.SHOW_PROCESSING_INSTRUCTION, null);
+      let currentNode = walker.nextNode();
+      while (currentNode) {
+        currentNode.data = _stripTemplateExpressions(currentNode.data);
+        currentNode = walker.nextNode();
+      }
+      // NodeIterator does not descend into <template>.content per the DOM spec,
+      // so we must explicitly recurse into each template's content fragment,
+      // mirroring the approach used by _sanitizeShadowDOM.
+      const templates = (_node$querySelectorAl = node.querySelectorAll) === null || _node$querySelectorAl === void 0 ? void 0 : _node$querySelectorAl.call(node, 'template');
+      if (templates) {
+        arrayForEach(templates, tmpl => {
+          if (_isDocumentFragment(tmpl.content)) {
+            _scrubTemplateExpressions2(tmpl.content);
+          }
+        });
+      }
+    };
+    /**
+     * _isClobbered
+     *
+     * Detect DOM-clobbering on HTMLFormElement nodes. Form is the only HTML
+     * interface with [LegacyOverrideBuiltIns]; a descendant element with a
+     * `name` attribute matching a prototype property shadows that property
+     * on direct reads. We use this check at the IN_PLACE entry-point and
+     * during attribute sanitization to refuse clobbered forms.
+     *
+     * @param element element to check for clobbering attacks
+     * @return true if clobbered, false if safe
+     */
+    const _isClobbered = function _isClobbered(element) {
+      // Realm-independent tag-name probe. If we can't determine the tag
+      // name at all, we can't reason about clobbering — return false
+      // (the caller's other defences still apply).
+      const realTagName = getNodeName ? getNodeName(element) : null;
+      if (typeof realTagName !== 'string') {
+        return false;
+      }
+      if (transformCaseFunc(realTagName) !== 'form') {
+        return false;
+      }
+      return typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' ||
+      // Realm-safe NamedNodeMap detection: equality against the cached
+      // prototype getter. Clobbered .attributes (e.g. <input name="attributes">)
+      // makes the direct read diverge from the cached read; a clean form
+      // (same-realm OR foreign-realm) has both reads pointing at the same
+      // canonical NamedNodeMap.
+      element.attributes !== getAttributes(element) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function' ||
+      // NodeType clobbering probe. Cached Node.prototype.nodeType getter
+      // returns the integer 1 for any Element regardless of realm; direct
+      // read on a clobbered form (e.g. <input name="nodeType">) returns
+      // the named child element. Cheap addition — nodeType is read from
+      // an internal slot, no serialization cost — and removes a residual
+      // clobbering surface used by several mXSS / PI / comment branches
+      // in _sanitizeElements that compare currentNode.nodeType directly.
+      element.nodeType !== getNodeType(element) ||
+      // HTMLFormElement has [LegacyOverrideBuiltIns]: a descendant named
+      // "childNodes" shadows the prototype getter. Direct reads of
+      // form.childNodes from a clobbered form return the named child
+      // instead of the real NodeList, so any walk that reads it directly
+      // skips the form's real children. Compare the direct read to the
+      // cached Node.prototype getter — when the form's named-property
+      // getter intercepts the read, the two values differ and we flag
+      // the form. This catches every clobbering child type (input,
+      // select, etc.) regardless of whether the named child happens to
+      // carry a numeric .length, which a typeof-based probe would miss
+      // (e.g. HTMLSelectElement.length is a defined unsigned-long).
+      element.childNodes !== getChildNodes(element);
+    };
+    /**
+     * Checks whether the given value is a DocumentFragment from any realm.
+     *
+     * The realm-independent replacement reads `nodeType` through the cached
+     * Node.prototype getter and compares to the DOCUMENT_FRAGMENT_NODE
+     * constant (11). nodeType is a numeric value resolved from the node's
+     * internal slot, identical across realms for the same kind of node.
+     *
+     * @param value object to check
+     * @return true if value is a DocumentFragment-shaped node from any realm
+     */
+    const _isDocumentFragment = function _isDocumentFragment(value) {
+      if (!getNodeType || typeof value !== 'object' || value === null) {
+        return false;
+      }
+      try {
+        return getNodeType(value) === NODE_TYPE.documentFragment;
+      } catch (_) {
+        return false;
+      }
+    };
+    /**
+     * Checks whether the given object is a DOM node, including nodes that
+     * originate from a different window/realm (e.g. an iframe's
+     * contentDocument). The previous `value instanceof Node` check was
+     * realm-bound: nodes from a different window failed it, causing
+     * sanitize() to silently stringify them and reset IN_PLACE to false,
+     * returning the original node unsanitized. See GHSA-4w3q-35jp-p934.
+     *
+     * @param value object to check whether it's a DOM node
+     * @return true if value is a DOM node from any realm
+     */
+    const _isNode = function _isNode(value) {
+      if (!getNodeType || typeof value !== 'object' || value === null) {
+        return false;
+      }
+      try {
+        return typeof getNodeType(value) === 'number';
+      } catch (_) {
+        return false;
+      }
+    };
+    function _executeHooks(hooks, currentNode, data) {
+      if (hooks.length === 0) {
+        return;
+      }
+      arrayForEach(hooks, hook => {
+        hook.call(DOMPurify, currentNode, data, CONFIG);
+      });
+    }
+    /**
+     * Structural-threat checks that condemn a node regardless of the
+     * allowlists: mXSS via namespace confusion, risky CSS construction,
+     * processing instructions, markup-bearing comments. Pure predicate;
+     * the caller removes. Check order is load-bearing.
+     *
+     * @param currentNode the node to inspect
+     * @param tagName the node's transformCaseFunc'd tag name
+     * @return true if the node must be removed
+     */
+    const _isUnsafeNode = function _isUnsafeNode(currentNode, tagName) {
+      /* Detect mXSS attempts abusing namespace confusion */
+      if (SAFE_FOR_XML && currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(ELEMENT_MARKUP_PROBE, currentNode.textContent) && regExpTest(ELEMENT_MARKUP_PROBE, currentNode.innerHTML)) {
+        return true;
+      }
+      /* Remove risky CSS construction leading to mXSS */
+      if (SAFE_FOR_XML && currentNode.namespaceURI === HTML_NAMESPACE && tagName === 'style' && _isNode(currentNode.firstElementChild)) {
+        return true;
+      }
+      /* Remove any occurrence of processing instructions */
+      if (currentNode.nodeType === NODE_TYPE.processingInstruction) {
+        return true;
+      }
+      /* Remove any kind of possibly harmful comments */
+      if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(COMMENT_MARKUP_PROBE, currentNode.data)) {
+        return true;
+      }
+      return false;
+    };
+    /**
+     * Handle a node whose tag is forbidden or not allowlisted: keep
+     * allowed custom elements (false return exits _sanitizeElements
+     * early - the namespace and fallback-tag removal checks are
+     * intentionally skipped for kept custom elements), else hoist
+     * content per KEEP_CONTENT and remove.
+     *
+     * A kept custom element is the ONLY case in which this function
+     * returns false, so the caller uses that return value to run the
+     * afterSanitizeElements hook on the kept element and keep the
+     * element-hook lifecycle consistent with normal allowlisted
+     * elements (GHSA-c2j3-45gr-mqc4).
+     *
+     * @param currentNode the disallowed node
+     * @param tagName the node's transformCaseFunc'd tag name
+     * @return true if the node was removed, false if kept
+     */
+    const _sanitizeDisallowedNode = function _sanitizeDisallowedNode(currentNode, tagName, root) {
+      /* Check if we have a custom element to handle */
+      if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {
+        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) {
+          return false;
+        }
+        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) {
+          return false;
+        }
+      }
+      /* Keep content except for bad-listed elements.
+           Use the cached prototype getters exclusively — the previous code
+           had `|| currentNode.parentNode` / `|| currentNode.childNodes`
+           fallbacks, but the cached getters always return the canonical
+           value (or null for a real parent-less node), so the fallback
+           path was dead in safe cases and a clobbering surface in unsafe
+           ones. Falsy cached results stay falsy; the `if (childNodes &&
+           parentNode)` check already gates correctly. */
+      if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {
+        const parentNode = getParentNode(currentNode);
+        const childNodes = getChildNodes(currentNode);
+        if (childNodes && parentNode) {
+          const childCount = childNodes.length;
+          /* Hoist by moving each child up one level rather than deep-cloning
+               it. Moving transfers every descendant exactly once, so a chain of
+               nested disallowed elements costs O(n) instead of the O(n^2) that
+               re-cloning the shrinking subtree at each level produced; it also
+               empties the removed original, so `DOMPurify.removed` no longer
+               pins whole subtrees. Moving preserves the in-place guarantee too:
+               an original carrying already-queued resource events (`<img
+               onerror>`, `<video>`/`<audio>` error, lazy/`onload`, …) is
+               relocated and sanitised rather than left detached but still armed.
+                        The sole case that must clone is removing the walk root itself.
+               The result is serialised from the root's subtree, so a restrictive
+               ALLOWED_TAGS that strips the root (`body` on the string path) must
+               leave the content inside it, which only cloning does. In IN_PLACE
+               the root is pre-validated as an allowed tag and so is never removed
+               here, so that path always takes the move branch.
+                        `childNodes` is live; a tail-to-head walk keeps `childNodes[i]`
+               valid whether we move (drops the trailing entry) or clone (leaves
+               the list intact). */
+          for (let i = childCount - 1; i >= 0; --i) {
+            const hoisted = currentNode === root ? cloneNode(childNodes[i], true) : childNodes[i];
+            parentNode.insertBefore(hoisted, getNextSibling(currentNode));
+          }
+        }
+      }
+      _forceRemove(currentNode);
+      return true;
+    };
+    /**
+     * Fork a hook-mutable allowlist off its shared binding the first time a
+     * (possibly lazily-installed) uponSanitize* hook is about to see it, so the
+     * hook cannot widen the per-instance default or the setConfig binding by
+     * reference and leak past the call. Returns the set unchanged once it is
+     * already call-local, so repeated calls across elements are idempotent.
+     *
+     * @param hookList the uponSanitize* hook array for this event
+     * @param set the current ALLOWED_TAGS / ALLOWED_ATTR binding
+     * @param defaultSet the per-instance DEFAULT_ALLOWED_* constant
+     * @param setConfigSet the captured setConfig() binding, or null
+     * @return a call-local clone if a hook is present and set is still shared,
+     *   else set unchanged
+     */
+    const _forkSharedAllowlist = function _forkSharedAllowlist(hookList, set, defaultSet, setConfigSet) {
+      if (hookList.length === 0) {
+        return set;
+      }
+      return set === defaultSet || set === setConfigSet ? clone(set) : set;
+    };
+    /**
+     * _sanitizeElements
+     *
+     * @protect nodeName
+     * @protect textContent
+     * @protect removeChild
+     * @param currentNode to check for permission to exist
+     * @return true if node was killed, false if left alive
+     */
+    // eslint-disable-next-line complexity
+    const _sanitizeElements = function _sanitizeElements(currentNode, root) {
+      /* Execute a hook if present */
+      _executeHooks(hooks.beforeSanitizeElements, currentNode, null);
+      /* A hook may have detached the node - treat it as removed (see the
+         detached-node comment after the uponSanitizeElement hook below). On
+         the IN_PLACE path, neutralize the detached subtree first so a queued
+         resource handler on it cannot fire in page scope after we return. */
+      if (currentNode !== root && getParentNode(currentNode) === null) {
+        if (IN_PLACE) {
+          _neutralizeSubtree(currentNode);
+        }
+        return true;
+      }
+      /* Check if element is clobbered or can clobber */
+      if (_isClobbered(currentNode)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Now let's check the element's type and name */
+      const tagName = transformCaseFunc(getNodeName ? getNodeName(currentNode) : currentNode.nodeName);
+      /* Close the pre-walk clone-guard's timing gap: an uponSanitizeElement
+         hook may have been installed after that guard sampled the hook arrays
+         (e.g. lazily from beforeSanitizeElements), leaving ALLOWED_TAGS still
+         aliasing a shared binding that a widening hook would mutate by
+         reference. Fork it before exposing it to the hook. */
+      ALLOWED_TAGS = _forkSharedAllowlist(hooks.uponSanitizeElement, ALLOWED_TAGS, DEFAULT_ALLOWED_TAGS, SET_CONFIG_ALLOWED_TAGS);
+      /* Execute a hook if present */
+      _executeHooks(hooks.uponSanitizeElement, currentNode, {
+        tagName,
+        allowedTags: ALLOWED_TAGS
+      });
+      /* A hook may have detached the node from the tree — a long-standing
+         user pattern (issue #469; draw.io-style foreignObject filtering).
+         Per the cached, unclobberable parentNode getter the node is
+         genuinely out of the tree, so it can reach neither the serialized
+         output nor an IN_PLACE live tree; treat it as removed and stop
+         processing it. Without this guard, the unsafe-node / namespace
+         checks below would call _forceRemove on a parentless node and hit
+         the REPORT-3 fail-closed throw — which exists for nodes DOMPurify
+         wants gone but *cannot* detach (clobbered / parentless roots), the
+         opposite of a node that is already safely gone. The walk root is
+         exempt: a detached IN_PLACE root is legitimate input and must still
+         be fully sanitized, and a kill-decision on it must keep hitting the
+         REPORT-3 throw. Nodes detached by hooks stay the hook's
+         responsibility for placement: they are not recorded in
+         DOMPurify.removed, so the post-walk IN_PLACE pass (which iterates
+         DOMPurify.removed) does not reach them. But a hook-detached subtree
+         can still hold a queued resource-event handler - e.g. an <img onload>
+         that began loading when the caller built the live tree - which fires
+         in page scope after sanitize returns even though the handler never
+         reached the returned tree. That is the audit-5 F1 hazard, and the
+         documented node.remove() hook pattern walks straight into it. So on
+         the IN_PLACE path we neutralize the detached subtree inline here,
+         stripping its non-allow-listed attributes before returning, exactly
+         as the post-walk pass does for _forceRemove'd subtrees. */
+      if (currentNode !== root && getParentNode(currentNode) === null) {
+        if (IN_PLACE) {
+          _neutralizeSubtree(currentNode);
+        }
+        return true;
+      }
+      /* Remove mXSS vectors, processing instructions and risky comments */
+      if (_isUnsafeNode(currentNode, tagName)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Remove element if anything forbids its presence */
+      if (FORBID_TAGS[tagName] || !(EXTRA_ELEMENT_HANDLING.tagCheck instanceof Function && EXTRA_ELEMENT_HANDLING.tagCheck(tagName)) && !ALLOWED_TAGS[tagName]) {
+        const removed = _sanitizeDisallowedNode(currentNode, tagName, root);
+        /* A false return means the node is a custom element kept via
+           CUSTOM_ELEMENT_HANDLING - the only keep path through
+           _sanitizeDisallowedNode. Run afterSanitizeElements on it so the
+           element-hook lifecycle matches normal allowlisted elements: a
+           security policy applied in this hook (e.g. stripping an attribute
+           from every surviving element) must not silently skip kept custom
+           elements (GHSA-c2j3-45gr-mqc4). This mirrors the normal-element
+           tail below - the hook runs, then the walker's subsequent
+           _sanitizeAttributes pass sanitizes the element's attributes. The
+           deliberately skipped namespace and fallback-tag removal checks stay
+           skipped; they are removal decisions, not the hook contract. */
+        if (removed === false) {
+          _executeHooks(hooks.afterSanitizeElements, currentNode, null);
+        }
+        return removed;
+      }
+      /* Check whether element has a valid namespace.
+         Realm-safe check (GHSA-hpcv-96wg-7vj8): use the cached Node.prototype
+         nodeType getter rather than `instanceof Element`, which is realm-
+         bound and short-circuits to false for any node minted in a different
+         realm — letting a foreign-realm element with a forbidden namespace
+         slip past the namespace check entirely. */
+      const nt = getNodeType ? getNodeType(currentNode) : currentNode.nodeType;
+      if (nt === NODE_TYPE.element && !_checkValidNamespace(currentNode)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Make sure that older browsers don't get fallback-tag mXSS */
+      if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(FALLBACK_TAG_CLOSE, currentNode.innerHTML)) {
+        _forceRemove(currentNode);
+        return true;
+      }
+      /* Sanitize element content to be template-safe */
+      if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {
+        /* Get the element's text content */
+        const content = _stripTemplateExpressions(currentNode.textContent);
+        if (currentNode.textContent !== content) {
+          arrayPush(DOMPurify.removed, {
+            element: currentNode.cloneNode()
+          });
+          currentNode.textContent = content;
+        }
+      }
+      /* Execute a hook if present */
+      _executeHooks(hooks.afterSanitizeElements, currentNode, null);
+      return false;
+    };
+    /**
+     * _isValidAttribute
+     *
+     * @param lcTag Lowercase tag name of containing element.
+     * @param lcName Lowercase attribute name.
+     * @param value Attribute value.
+     * @return Returns true if `value` is valid, otherwise false.
+     */
+    // eslint-disable-next-line complexity
+    const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
+      /* FORBID_ATTR must always win, even if ADD_ATTR predicate would allow it */
+      if (FORBID_ATTR[lcName]) {
+        return false;
+      }
+      /* Reject declarative-partial-updates patch-linkage attributes
+         (https://github.com/WICG/declarative-partial-updates).
+              Empirical note (Chrome 150, verified — see
+         test/declarative-patch-probe-v3.html): expansion is NOT applied after
+         sanitization. For the string path it fires during sanitize()'s own
+         parse, so the walk sees and sanitizes the fully materialized expanded
+         tree — teleports into MathML/SVG integration points included; a
+         weaponized `<template for>`->`<img onerror>` comes back with the handler
+         stripped. For the IN_PLACE path it fires on connection, before the walk.
+         Either way DOMPurify is NOT blind to the patch.
+              This removal is therefore defense-in-depth rather than the sole barrier:
+         it prevents live linkage from surviving into the OUTPUT and re-expanding
+         in the caller's context, and keeps behaviour deterministic if a future
+         engine defers expansion. `for` is legitimate only on <label>/<output>;
+         anywhere else (notably <template for>) it links the element to a patch
+         target and teleports or removes an arbitrary DOM range by id/marker name.
+         `patchsrc` fetches remote markup and is treated as a script-loading
+         mechanism (CSP). Gated on SAFE_FOR_XML so the removal groups with the
+         other structural-threat checks and stays overridable, consistent with
+         the rest of the codebase. PI range markers are already removed by
+         _isUnsafeNode. */
+      if (SAFE_FOR_XML && lcName === 'patchsrc') {
+        return false;
+      }
+      if (SAFE_FOR_XML && lcName === 'for' && lcTag !== 'label' && lcTag !== 'output') {
+        return false;
+      }
+      /* Make sure attribute cannot clobber */
+      if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
+        return false;
+      }
+      const nameIsPermitted = ALLOWED_ATTR[lcName] || EXTRA_ELEMENT_HANDLING.attributeCheck instanceof Function && EXTRA_ELEMENT_HANDLING.attributeCheck(lcName, lcTag);
+      /* Allow valid data-* attributes: At least one character after "-"
+          (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
+          XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
+          We don't need to check the value; it's always URI safe. */
+      if (ALLOW_DATA_ATTR && regExpTest(DATA_ATTR$1, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR$1, lcName)) ; else if (!nameIsPermitted) {
+        if (
+        // First condition does a very basic check if a) it's basically a valid custom element tagname AND
+        // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+        // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck
+        _isBasicCustomElement(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName, lcTag)) ||
+        // Alternative, second condition checks if it's an `is`-attribute, AND
+        // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+        lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else {
+          return false;
+        }
+        /* Check value is safe. First, is attr inert? If so, is safe */
+      } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE$1, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA$1, stringReplace(value, ATTR_WHITESPACE$1, ''))) ; else if (value) {
+        return false;
+      } else ;
+      return true;
+    };
+    /* Names the HTML spec reserves from valid-custom-element-name; these must
+     * never be treated as basic custom elements even when a permissive
+     * CUSTOM_ELEMENT_HANDLING.tagNameCheck is configured. */
+    const RESERVED_CUSTOM_ELEMENT_NAMES = addToSet({}, ['annotation-xml', 'color-profile', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'missing-glyph']);
+    /**
+     * _isBasicCustomElement
+     * checks if at least one dash is included in tagName, and it's not the first char
+     * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name
+     *
+     * @param tagName name of the tag of the node to sanitize
+     * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false.
+     */
+    const _isBasicCustomElement = function _isBasicCustomElement(tagName) {
+      return !RESERVED_CUSTOM_ELEMENT_NAMES[stringToLowerCase(tagName)] && regExpTest(CUSTOM_ELEMENT$1, tagName);
+    };
+    /**
+     * Wrap an attribute value in the matching Trusted Types object when
+     * the active policy requires it. Namespaced attributes pass through
+     * unchanged (no TT support yet, see
+     * https://bugs.chromium.org/p/chromium/issues/detail?id=1305293).
+     *
+     * @param lcTag lowercase tag name of the containing element
+     * @param lcName lowercase attribute name
+     * @param namespaceURI the attribute's namespace, if any
+     * @param value the attribute value to wrap
+     * @return the value, wrapped when Trusted Types demand it
+     */
+    const _applyTrustedTypesToAttribute = function _applyTrustedTypesToAttribute(lcTag, lcName, namespaceURI, value) {
+      if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function' && !namespaceURI) {
+        switch (trustedTypes.getAttributeType(lcTag, lcName)) {
+          case 'TrustedHTML':
+            {
+              return _createTrustedHTML(value);
+            }
+          case 'TrustedScriptURL':
+            {
+              return _createTrustedScriptURL(value);
+            }
+        }
+      }
+      return value;
+    };
+    /**
+     * Write a modified attribute value back onto the element. On
+     * success, re-probe for clobbering introduced by the new value and
+     * remove the element when found; otherwise pop the removal entry
+     * recorded by the earlier _removeAttribute (long-standing pairing
+     * with the SANITIZE_NAMED_PROPS path - do not "fix" casually). On
+     * failure, remove the attribute instead.
+     *
+     * @param currentNode the element carrying the attribute
+     * @param name the attribute name as present on the element
+     * @param namespaceURI the attribute's namespace, if any
+     * @param value the new attribute value
+     */
+    const _setAttributeValue = function _setAttributeValue(currentNode, name, namespaceURI, value) {
+      try {
+        if (namespaceURI) {
+          currentNode.setAttributeNS(namespaceURI, name, value);
+        } else {
+          /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */
+          currentNode.setAttribute(name, value);
+        }
+        if (_isClobbered(currentNode)) {
+          _forceRemove(currentNode);
+        } else {
+          arrayPop(DOMPurify.removed);
+        }
+      } catch (_) {
+        _removeAttribute(name, currentNode);
+      }
+    };
+    /**
+     * _sanitizeAttributes
+     *
+     * @protect attributes
+     * @protect nodeName
+     * @protect removeAttribute
+     * @protect setAttribute
+     *
+     * @param currentNode to sanitize
+     */
+    const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
+      /* Execute a hook if present */
+      _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null);
+      const attributes = currentNode.attributes;
+      /* Check if we have attributes; if not we might have a text node */
+      if (!attributes || _isClobbered(currentNode)) {
+        return;
+      }
+      /* Same lazy-install guard as uponSanitizeElement (see there): fork the
+         attribute allowlist off its shared binding before a hook can see it. */
+      ALLOWED_ATTR = _forkSharedAllowlist(hooks.uponSanitizeAttribute, ALLOWED_ATTR, DEFAULT_ALLOWED_ATTR, SET_CONFIG_ALLOWED_ATTR);
+      const hookEvent = {
+        attrName: '',
+        attrValue: '',
+        keepAttr: true,
+        allowedAttributes: ALLOWED_ATTR,
+        forceKeepAttr: undefined
+      };
+      let l = attributes.length;
+      const lcTag = transformCaseFunc(currentNode.nodeName);
+      /* Go backwards over all attributes; safely remove bad ones */
+      while (l--) {
+        const attr = attributes[l];
+        const name = attr.name,
+          namespaceURI = attr.namespaceURI,
+          attrValue = attr.value;
+        const lcName = transformCaseFunc(name);
+        const initValue = attrValue;
+        let value = name === 'value' ? initValue : stringTrim(initValue);
+        /* Execute a hook if present */
+        hookEvent.attrName = lcName;
+        hookEvent.attrValue = value;
+        hookEvent.keepAttr = true;
+        hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set
+        _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent);
+        value = hookEvent.attrValue;
+        /* Full DOM Clobbering protection via namespace isolation,
+         * Prefix id and name attributes with `user-content-`
+         */
+        if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name') && stringIndexOf(value, SANITIZE_NAMED_PROPS_PREFIX) !== 0) {
+          // Remove the attribute with this value
+          _removeAttribute(name, currentNode);
+          // Prefix the value and later re-create the attribute with the sanitized value
+          value = SANITIZE_NAMED_PROPS_PREFIX + value;
+        }
+        // Else: already prefixed, leave the attribute alone — the prefix is
+        // itself the clobbering protection, and re-applying it is incorrect.
+        /* Work around a security issue with comments inside attributes */
+        if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|script|title|xmp|textarea|noscript|iframe|noembed|noframes)/i, value)) {
+          _removeAttribute(name, currentNode);
+          continue;
+        }
+        /* Make sure we cannot easily use animated hrefs, even if animations are allowed */
+        if (lcName === 'attributename' && stringMatch(value, 'href')) {
+          _removeAttribute(name, currentNode);
+          continue;
+        }
+        /* Did the hooks force-keep the attribute? */
+        if (hookEvent.forceKeepAttr) {
+          continue;
+        }
+        /* Did the hooks approve of the attribute? */
+        if (!hookEvent.keepAttr) {
+          _removeAttribute(name, currentNode);
+          continue;
+        }
+        /* Work around a security issue in jQuery 3.0 */
+        if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(SELF_CLOSING_TAG, value)) {
+          _removeAttribute(name, currentNode);
+          continue;
+        }
+        /* Sanitize attribute content to be template-safe */
+        if (SAFE_FOR_TEMPLATES) {
+          value = _stripTemplateExpressions(value);
+        }
+        /* Is `value` valid for this attribute? */
+        if (!_isValidAttribute(lcTag, lcName, value)) {
+          _removeAttribute(name, currentNode);
+          continue;
+        }
+        /* Handle attributes that require Trusted Types */
+        value = _applyTrustedTypesToAttribute(lcTag, lcName, namespaceURI, value);
+        /* Handle invalid data-* attribute set by try-catching it */
+        if (value !== initValue) {
+          _setAttributeValue(currentNode, name, namespaceURI, value);
+        }
+      }
+      /* Execute a hook if present */
+      _executeHooks(hooks.afterSanitizeAttributes, currentNode, null);
+    };
+    /**
+     * _sanitizeShadowDOM
+     *
+     * @param fragment to iterate over recursively
+     */
+    const _sanitizeShadowDOM2 = function _sanitizeShadowDOM(fragment) {
+      let shadowNode = null;
+      const shadowIterator = _createNodeIterator(fragment);
+      /* Execute a hook if present */
+      _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null);
+      while (shadowNode = shadowIterator.nextNode()) {
+        /* Execute a hook if present */
+        _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null);
+        /* Sanitize tags and elements */
+        _sanitizeElements(shadowNode, fragment);
+        /* Check attributes next */
+        _sanitizeAttributes(shadowNode);
+        /* Deep shadow DOM detected.
+           Realm-safe check (GHSA-hpcv-96wg-7vj8): use nodeType against the
+           DOCUMENT_FRAGMENT_NODE constant rather than instanceof, so we
+           recurse into <template>.content from foreign realms too. */
+        if (_isDocumentFragment(shadowNode.content)) {
+          _sanitizeShadowDOM2(shadowNode.content);
+        }
+        /* An element iterated here may itself host an attached
+           shadow root. The default NodeIterator does not enter shadow
+           trees, so a shadow root nested inside template.content was
+           previously reached by no walk at all (the pre-pass at
+           _sanitizeAttachedShadowRoots descends via childNodes, which
+           doesn't enter template.content; the template-content recursion
+           above iterates the content but never inspected shadowRoot).
+           Walk it explicitly. The nodeType guard avoids reading
+           shadowRoot off text / comment / CDATA / PI nodes that the
+           iterator also surfaces. */
+        const shadowNodeType = getNodeType ? getNodeType(shadowNode) : shadowNode.nodeType;
+        if (shadowNodeType === NODE_TYPE.element) {
+          const innerSr = getShadowRoot(shadowNode);
+          if (_isDocumentFragment(innerSr)) {
+            _sanitizeAttachedShadowRoots(innerSr);
+            _sanitizeShadowDOM2(innerSr);
+          }
+        }
+      }
+      /* Execute a hook if present */
+      _executeHooks(hooks.afterSanitizeShadowDOM, fragment, null);
+    };
+    /**
+     * _sanitizeAttachedShadowRoots
+     *
+     * Walks `root` and feeds every attached shadow root we encounter into
+     * the existing _sanitizeShadowDOM pipeline. The default node iterator
+     * does not descend into shadow trees, so nodes inside an attached
+     * shadow root would otherwise be skipped entirely.
+     *
+     * Two real input paths put attached shadow roots in front of us:
+     *   1. IN_PLACE on a DOM node that already has shadow roots attached.
+     *   2. DOM-node input where importNode(dirty, true) deep-clones the
+     *      shadow root because it was created with `clonable: true`.
+     *
+     * This pass runs once, up front, so the main iteration loop (and the
+     * existing _sanitizeShadowDOM template-content recursion) stay
+     * untouched — string-input paths are not affected.
+     *
+     * @param root the subtree root to walk for attached shadow roots
+     */
+    const _sanitizeAttachedShadowRoots = function _sanitizeAttachedShadowRoots(root) {
+      /* Iterative (explicit stack) rather than per-child recursion. DOM APIs
+         impose no depth cap, so an attacker-shaped tree (JSON/CRDT/editor data
+         built straight into the DOM — the IN_PLACE surface) deeper than the JS
+         call-stack budget would otherwise overflow native recursion here and
+         throw at the IN_PLACE entry pre-pass, before a single node is
+         sanitized, leaving the caller's live tree untouched (fail-open). See
+         campaign-3 F4. A heap stack keeps depth off the call stack.
+              Each work item is either a node to descend into, or a deferred
+         `_sanitizeShadowDOM` for an already-walked shadow root. The deferred
+         form preserves the original post-order discipline: a shadow root's
+         nested shadow roots are discovered before the outer shadow is
+         sanitized (which may remove hosts). Pushes are in reverse of the
+         desired processing order (LIFO): template content, then children, then
+         the shadow-sanitize, then the shadow walk — so the order matches the
+         previous recursion exactly. */
+      const stack = [{
+        node: root,
+        shadow: null
+      }];
+      while (stack.length > 0) {
+        const item = stack.pop();
+        /* Deferred shadow-DOM sanitisation: runs after its subtree was walked. */
+        if (item.shadow) {
+          _sanitizeShadowDOM2(item.shadow);
+          continue;
+        }
+        const node = item.node;
+        const nodeType = getNodeType ? getNodeType(node) : node.nodeType;
+        const isElement = nodeType === NODE_TYPE.element;
+        /* (pushed last → processed first) Children, snapshotted in reverse so
+           the first child is processed first. Snapshotting matters because a
+           hook may detach siblings mid-walk. */
+        const childNodes = getChildNodes(node);
+        if (childNodes) {
+          for (let i = childNodes.length - 1; i >= 0; --i) {
+            stack.push({
+              node: childNodes[i],
+              shadow: null
+            });
+          }
+        }
+        /* (pushed before children → processed after them, matching the old
+           "template content last" order) When the node is a <template>,
+           descend into its content. */
+        if (isElement) {
+          const rootName = getNodeName ? getNodeName(node) : null;
+          if (typeof rootName === 'string' && transformCaseFunc(rootName) === 'template') {
+            const content = node.content;
+            if (_isDocumentFragment(content)) {
+              stack.push({
+                node: content,
+                shadow: null
+              });
+            }
+          }
+        }
+        /* Shadow root (processed first): walk its subtree, then sanitise it.
+           Realm-safe check (GHSA-hpcv-96wg-7vj8): nodeType-based detection
+           rather than `instanceof DocumentFragment`, which is realm-bound and
+           silently skipped foreign-realm shadow roots (e.g.
+           iframe.contentDocument attachShadow). */
+        if (isElement) {
+          const sr = getShadowRoot(node);
+          if (_isDocumentFragment(sr)) {
+            /* Push the deferred sanitise first so it pops after the shadow
+               walk we push next, i.e. nested shadow roots are discovered
+               before this one is sanitised. */
+            stack.push({
+              node: null,
+              shadow: sr
+            }, {
+              node: sr,
+              shadow: null
+            });
+          }
+        }
+      }
+    };
+    // eslint-disable-next-line complexity
+    DOMPurify.sanitize = function (dirty) {
+      let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+      let body = null;
+      let importedNode = null;
+      let currentNode = null;
+      let returnNode = null;
+      /* Make sure we have a string to sanitize.
+        DO NOT return early, as this will return the wrong type if
+        the user has requested a DOM object rather than a string */
+      IS_EMPTY_INPUT = !dirty;
+      if (IS_EMPTY_INPUT) {
+        dirty = '<!-->';
+      }
+      /* Stringify, in case dirty is an object */
+      if (typeof dirty !== 'string' && !_isNode(dirty)) {
+        dirty = stringifyValue(dirty);
+        if (typeof dirty !== 'string') {
+          throw typeErrorCreate('dirty is not a string, aborting');
+        }
+      }
+      /* Return dirty HTML if DOMPurify cannot run */
+      if (!DOMPurify.isSupported) {
+        return dirty;
+      }
+      /* Assign config vars */
+      if (SET_CONFIG) {
+        /* Persistent setConfig() path: _parseConfig is skipped, so the sets are
+         * not re-derived per call. Restore them from the pristine bindings
+         * captured at setConfig() time so a previous call's hook clone (mutated
+         * below) does not carry over. */
+        ALLOWED_TAGS = SET_CONFIG_ALLOWED_TAGS;
+        ALLOWED_ATTR = SET_CONFIG_ALLOWED_ATTR;
+      } else {
+        _parseConfig(cfg);
+      }
+      /* Clone the hook-mutable allowlists before the walk whenever an
+       * uponSanitize* hook is registered. The hook event exposes ALLOWED_TAGS
+       * and ALLOWED_ATTR by reference (as allowedTags / allowedAttributes), so
+       * a hook that widens them would otherwise mutate the shared set
+       * permanently: across later calls and across every element. Cloning per
+       * walk keeps documented in-call widening working while scoping it to the
+       * call. A single guard for both config paths - the per-call path rebinds
+       * the sets in _parseConfig each call, the persistent path restores them
+       * from the captured bindings just above - so the two cannot diverge. */
+      if (hooks.uponSanitizeElement.length > 0 || hooks.uponSanitizeAttribute.length > 0) {
+        ALLOWED_TAGS = clone(ALLOWED_TAGS);
+      }
+      if (hooks.uponSanitizeAttribute.length > 0) {
+        ALLOWED_ATTR = clone(ALLOWED_ATTR);
+      }
+      /* Clean up removed elements */
+      DOMPurify.removed = [];
+      /* Resolve IN_PLACE for this call without mutating persistent config.
+         Writing the IN_PLACE closure variable here leaks under setConfig(),
+         where _parseConfig is skipped on later calls: a single string call would
+         disable in-place mode for every subsequent node call, returning a
+         sanitized copy while leaving the caller's node — which in-place callers
+         keep using and whose return value they ignore — unsanitized. REPORT-2. */
+      const inPlace = IN_PLACE && typeof dirty !== 'string' && _isNode(dirty);
+      if (inPlace) {
+        /* Declarative-partial-updates / streaming pre-pass: sever every patch
+           linkage across the live tree BEFORE the walk, so no patch can fire
+           mid-walk and inject into an already-processed region. Runs first, so
+           it also covers the forbidden/clobbered roots that throw below. */
+        _neutralizePatchLinkage(dirty);
+        /* Do some early pre-sanitization to avoid unsafe root nodes.
+           Read nodeName through the cached prototype getter — a clobbering
+           child named "nodeName" on the form root would otherwise shadow
+           the property and let this check skip the root-allowlist
+           validation entirely. */
+        const nn = getNodeName ? getNodeName(dirty) : dirty.nodeName;
+        if (typeof nn === 'string') {
+          const tagName = transformCaseFunc(nn);
+          if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
+            /* Fail closed on a live root: neutralize handlers/children before
+               throwing, exactly as the mid-walk abort path does. */
+            _neutralizeRoot(dirty);
+            throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');
+          }
+        }
+        /* Pre-flight the root through _isClobbered. The iterator-driven
+           removal path can not detach a parent-less root: _forceRemove
+           falls through to Element.prototype.remove(), which per spec
+           is a no-op on a node with no parent. A clobbered root would
+           then survive the main loop with its attributes uninspected,
+           because _sanitizeAttributes early-returns on _isClobbered. The
+           result would be an attacker-controlled form, complete with any
+           event-handler attributes the caller passed in, handed back to
+           the application unsanitized. Refuse to sanitize such a root
+           the same way we refuse a forbidden tag. GHSA-r47g-fvhr-h676. */
+        if (_isClobbered(dirty)) {
+          /* Fail closed on a live clobbered root before throwing.
+             _neutralizeRoot's reads are clobber-safe (cached getters); the
+             form's non-clobbered descendants, e.g. an armed <img>, are scrubbed. */
+          _neutralizeRoot(dirty);
+          throw typeErrorCreate('root node is clobbered and cannot be sanitized in-place');
+        }
+        /* Sanitize attached shadow roots before the main iterator runs.
+           The iterator does not descend into shadow trees. Same fail-closed
+           barrier as the main walk (campaign-3 F2): a custom-element reaction
+           inside a shadow root could abort this pre-pass before the walk runs,
+           which would otherwise leave the entire live tree unsanitized. */
+        try {
+          _sanitizeAttachedShadowRoots(dirty);
+        } catch (error) {
+          _neutralizeRoot(dirty);
+          throw error;
+        }
+      } else if (_isNode(dirty)) {
+        /* If dirty is a DOM element, append to an empty document to avoid
+           elements being stripped by the parser */
+        body = _initDocument('<!---->');
+        importedNode = body.ownerDocument.importNode(dirty, true);
+        if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') {
+          /* Node is already a body, use as is */
+          body = importedNode;
+        } else if (importedNode.nodeName === 'HTML') {
+          body = importedNode;
+        } else {
+          // eslint-disable-next-line unicorn/prefer-dom-node-append
+          body.appendChild(importedNode);
+        }
+        /* Clonable shadow roots are deep-cloned by importNode(); sanitize
+           them before the main iterator runs, since the iterator does not
+           descend into shadow trees. The walk routes every read through a
+           cached prototype getter so clobbering descendants on a form root
+           cannot hide a shadow host from this pass. */
+        _sanitizeAttachedShadowRoots(importedNode);
+      } else {
+        /* Exit directly if we have nothing to do */
+        if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT &&
+        // eslint-disable-next-line unicorn/prefer-includes
+        dirty.indexOf('<') === -1) {
+          return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? _createTrustedHTML(dirty) : dirty;
+        }
+        /* Initialize the document to work on */
+        body = _initDocument(dirty);
+        /* Check we have a DOM node from the data */
+        if (!body) {
+          return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';
+        }
+      }
+      /* Remove first element node (ours) if FORCE_BODY is set */
+      if (body && FORCE_BODY) {
+        _forceRemove(body.firstChild);
+      }
+      /* Get node iterator */
+      const walkRoot = inPlace ? dirty : body;
+      /* Now start iterating over the created document.
+         The walk runs inside an exception barrier (campaign-3 F2): a re-entrant
+         engine/custom-element mutation can detach a node mid-walk so
+         `_forceRemove`'s parentless guard throws, aborting the loop. Without the
+         barrier the caller's in-place tree would be left half-sanitized with the
+         unvisited tail still armed. _createNodeIterator itself is inside the
+         barrier too: constructing the iterator dereferences the root's document,
+         and any failure there (e.g. an exotic/clobbered root) must still fail
+         closed rather than skip the neutralize. On any throw we fail closed -
+         strip the in-place root bare - then rethrow so the existing throw
+         contract is preserved. (String/DOM-copy paths never return the partial
+         body, so the propagating throw is already fail-closed there.) */
+      try {
+        const nodeIterator = _createNodeIterator(walkRoot);
+        while (currentNode = nodeIterator.nextNode()) {
+          /* Sanitize tags and elements */
+          _sanitizeElements(currentNode, walkRoot);
+          /* Check attributes next */
+          _sanitizeAttributes(currentNode);
+          /* Shadow DOM detected, sanitize it.
+             Realm-safe check (GHSA-hpcv-96wg-7vj8): nodeType-based detection
+             instead of instanceof, so foreign-realm <template>.content is
+             walked correctly. */
+          if (_isDocumentFragment(currentNode.content)) {
+            _sanitizeShadowDOM2(currentNode.content);
+          }
+        }
+      } catch (error) {
+        if (inPlace) {
+          _neutralizeRoot(dirty);
+          /* Nodes _forceRemove'd earlier in the aborted walk are already
+             detached from the root, so _neutralizeRoot's subtree pass does not
+             reach them. Defuse them too, mirroring the success-path loop below. */
+          arrayForEach(DOMPurify.removed, entry => {
+            if (entry.element) {
+              _neutralizeSubtree(entry.element);
+            }
+          });
+        }
+        throw error;
+      }
+      /* If we sanitized `dirty` in-place, return it. */
+      if (inPlace) {
+        /* Fail-closed completion of the audit-5 F1 fix: every node removed from
+           the caller's live tree is detached but may still hold a queued
+           resource-event handler that fires in page scope after we return. The
+           move-hoist covers only disallowed-tag KEEP_CONTENT removals; strip the
+           non-allow-listed attributes off every other removed subtree (clobber,
+           mXSS, namespace, comments, KEEP_CONTENT:false, …) so those handlers are
+           cancelled before any event can fire. Runs synchronously, pre-return. */
+        arrayForEach(DOMPurify.removed, entry => {
+          if (entry.element) {
+            _neutralizeSubtree(entry.element);
+          }
+        });
+        if (SAFE_FOR_TEMPLATES) {
+          _scrubTemplateExpressions2(dirty);
+        }
+        return dirty;
+      }
+      /* Return sanitized string or DOM */
+      if (RETURN_DOM) {
+        if (SAFE_FOR_TEMPLATES) {
+          _scrubTemplateExpressions2(body);
+        }
+        if (RETURN_DOM_FRAGMENT) {
+          returnNode = createDocumentFragment.call(body.ownerDocument);
+          while (body.firstChild) {
+            // eslint-disable-next-line unicorn/prefer-dom-node-append
+            returnNode.appendChild(body.firstChild);
+          }
+        } else {
+          returnNode = body;
+        }
+        if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {
+          /*
+            AdoptNode() is not used because internal state is not reset
+            (e.g. the past names map of a HTMLFormElement), this is safe
+            in theory but we would rather not risk another attack vector.
+            The state that is cloned by importNode() is explicitly defined
+            by the specs.
+          */
+          returnNode = importNode.call(originalDocument, returnNode, true);
+        }
+        return returnNode;
+      }
+      let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
+      /* Serialize doctype if allowed */
+      if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {
+        serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML;
+      }
+      /* Sanitize final string template-safe */
+      if (SAFE_FOR_TEMPLATES) {
+        serializedHTML = _stripTemplateExpressions(serializedHTML);
+      }
+      return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? _createTrustedHTML(serializedHTML) : serializedHTML;
+    };
+    DOMPurify.setConfig = function () {
+      let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+      _parseConfig(cfg);
+      SET_CONFIG = true;
+      SET_CONFIG_ALLOWED_TAGS = ALLOWED_TAGS;
+      SET_CONFIG_ALLOWED_ATTR = ALLOWED_ATTR;
+    };
+    DOMPurify.clearConfig = function () {
+      CONFIG = null;
+      SET_CONFIG = false;
+      SET_CONFIG_ALLOWED_TAGS = null;
+      SET_CONFIG_ALLOWED_ATTR = null;
+      // Drop any caller-supplied Trusted Types policy so it cannot poison later
+      // `RETURN_TRUSTED_TYPE` output. The internal default policy (cached, and
+      // never recreated — Trusted Types throws on duplicate names) is restored by
+      // the next `_parseConfig`. See GHSA-vxr8-fq34-vvx9.
+      trustedTypesPolicy = defaultTrustedTypesPolicy;
+      emptyHTML = '';
+    };
+    DOMPurify.isValidAttribute = function (tag, attr, value) {
+      /* Initialize shared config vars if necessary. */
+      if (!CONFIG) {
+        _parseConfig({});
+      }
+      const lcTag = transformCaseFunc(tag);
+      const lcName = transformCaseFunc(attr);
+      return _isValidAttribute(lcTag, lcName, value);
+    };
+    DOMPurify.addHook = function (entryPoint, hookFunction) {
+      if (typeof hookFunction !== 'function') {
+        return;
+      }
+      /* Reject unknown entry points. Without this, a non-hook key (e.g.
+       * '__proto__') indexes off the prototype chain rather than a real
+       * hook array, and arrayPush then writes to Object.prototype. Guard
+       * with an own-property check against the known hook names. */
+      if (!objectHasOwnProperty(hooks, entryPoint)) {
+        return;
+      }
+      arrayPush(hooks[entryPoint], hookFunction);
+    };
+    DOMPurify.removeHook = function (entryPoint, hookFunction) {
+      if (!objectHasOwnProperty(hooks, entryPoint)) {
+        return undefined;
+      }
+      if (hookFunction !== undefined) {
+        const index = arrayLastIndexOf(hooks[entryPoint], hookFunction);
+        return index === -1 ? undefined : arraySplice(hooks[entryPoint], index, 1)[0];
+      }
+      return arrayPop(hooks[entryPoint]);
+    };
+    DOMPurify.removeHooks = function (entryPoint) {
+      if (!objectHasOwnProperty(hooks, entryPoint)) {
+        return;
+      }
+      hooks[entryPoint] = [];
+    };
+    DOMPurify.removeAllHooks = function () {
+      hooks = _createHooksMap();
+    };
+    return DOMPurify;
+  }
+  var purify = createDOMPurify();
+
+  return purify;
+
+}));
+//# sourceMappingURL=purify.js.map