/*! ableplayer V4.8.0 with DOMPurify included */

/*! @license DOMPurify 3.3.1 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.3.1/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';

const {

entries,

setPrototypeOf,

isFrozen,

getPrototypeOf,

getOwnPropertyDescriptor

} = Object;

let {

freeze,

seal,

create

} = Object; // eslint-disable-line import/no-mutable-exports

let {

apply,

construct

} = typeof Reflect !== 'undefined' && Reflect;

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 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 objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);

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);

}

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 [property, value] of entries(object)) {

const isPropertyExist = objectHasOwnProperty(object, property);

if (isPropertyExist) {

if (Array.isArray(value)) {

newObject[property] = cleanArray(value);

} else if (value && typeof value === 'object' && value.constructor === Object) {

newObject[property] = clone(value);

} else {

newObject[property] = value;

}

}

}

return newObject;

}

/**

* 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;

}

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', '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', 'slot']);

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', '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-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', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);

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

// eslint-disable-next-line unicorn/better-regex

const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode

const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm);

const TMPLIT_EXPR = seal(/\$\{[\w\W]*/gm); // eslint-disable-line unicorn/better-regex

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);

var EXPRESSIONS = /*#__PURE__*/Object.freeze({

__proto__: null,

ARIA_ATTR: ARIA_ATTR,

ATTR_WHITESPACE: ATTR_WHITESPACE,

CUSTOM_ELEMENT: CUSTOM_ELEMENT,

DATA_ATTR: DATA_ATTR,

DOCTYPE_NAME: DOCTYPE_NAME,

ERB_EXPR: ERB_EXPR,

IS_ALLOWED_URI: IS_ALLOWED_URI,

IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,

MUSTACHE_EXPR: MUSTACHE_EXPR,

TMPLIT_EXPR: TMPLIT_EXPR

});

/* eslint-disable @typescript-eslint/indent */

// 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

progressingInstruction: 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: []

};

};

function createDOMPurify() {

let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();

const DOMPurify = root => createDOMPurify(root);

DOMPurify.version = '3.3.1';

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;

const originalDocument = document;

const currentScript = originalDocument.currentScript;

const {

DocumentFragment,

HTMLTemplateElement,

Node,

Element,

NodeFilter,

NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,

HTMLFormElement,

DOMParser,

trustedTypes

} = window;

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');

// 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 = '';

const {

implementation,

createNodeIterator,

createDocumentFragment,

getElementsByTagName

} = document;

const {

importNode

} = originalDocument;

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,

ERB_EXPR,

TMPLIT_EXPR,

DATA_ATTR,

ARIA_ATTR,

IS_SCRIPT_OR_DATA,

ATTR_WHITESPACE,

CUSTOM_ELEMENT

} = EXPRESSIONS;

let {

IS_ALLOWED_URI: IS_ALLOWED_URI$1

} = EXPRESSIONS;

/**

* 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;

/* 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', '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);

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

let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);

// 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 = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;

ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;

ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;

URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES;

DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS;

FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;

FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : clone({});

FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : clone({});

USE_PROFILES = objectHasOwnProperty(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 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;

NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;

MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS;

HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS;

CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};

if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {

CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;

}

if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {

CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;

}

if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {

CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;

}

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 = [];

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);

}

}

/* Merge configuration parameters */

if (cfg.ADD_TAGS) {

if (typeof cfg.ADD_TAGS === 'function') {

EXTRA_ELEMENT_HANDLING.tagCheck = cfg.ADD_TAGS;

} else {

if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {

ALLOWED_TAGS = clone(ALLOWED_TAGS);

}

addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);

}

}

if (cfg.ADD_ATTR) {

if (typeof cfg.ADD_ATTR === 'function') {

EXTRA_ELEMENT_HANDLING.attributeCheck = cfg.ADD_ATTR;

} else {

if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {

ALLOWED_ATTR = clone(ALLOWED_ATTR);

}

addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);

}

}

if (cfg.ADD_URI_SAFE_ATTR) {

addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);

}

if (cfg.FORBID_CONTENTS) {

if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {

FORBID_CONTENTS = clone(FORBID_CONTENTS);

}

addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);

}

if (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;

}

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.');

}

// Overwrite existing TrustedTypes policy.

trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;

// Sign local variables required by `sanitize`.

emptyHTML = trustedTypesPolicy.createHTML('');

} else {

// Uninitialized policy, attempt to initialize the internal dompurify policy.

if (trustedTypesPolicy === undefined) {

trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);

}

// If creating the internal policy succeeded sign internal variables.

if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {

emptyHTML = trustedTypesPolicy.createHTML('');

}

}

// 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]);

/**

* @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) {

// 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 parent is either <annotation-xml> or MathML

// text integration points.

if (parent.namespaceURI === MATHML_NAMESPACE) {

return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);

}

// We only allow elements that are defined in SVG

// spec. All others are disallowed in SVG namespace.

return Boolean(ALL_SVG_TAGS[tagName]);

}

if (element.namespaceURI === MATHML_NAMESPACE) {

// The only way to switch from HTML namespace to MathML

// is via <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]);

}

if (element.namespaceURI === HTML_NAMESPACE) {

// The only way to switch from SVG to HTML is via

// HTML integration points, and from MathML to HTML

// is via MathML text integration points

if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {

return false;

}

if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {

return false;

}

// 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]);

}

// 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 (_) {

remove(node);

}

};

/**

* _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 (_) {}

}

}

};

/**

* _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 ? trustedTypesPolicy.createHTML(dirty) : dirty;

/*

* Use the DOMParser API by default, fallback later if needs be

* DOMParser not work for svg when has multiple root element.

*/

if (NAMESPACE === HTML_NAMESPACE) {

try {

doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);

} catch (_) {}

}

/* Use createHTMLDocument in case DOMParser is not available */

if (!doc || !doc.documentElement) {

doc = implementation.createDocument(NAMESPACE, 'template', null);

try {

doc.documentElement.innerHTML = IS_EMPTY_INPUT ? 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) {

return createNodeIterator.call(root.ownerDocument || 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);

};

/**

* _isClobbered

*

* @param element element to check for clobbering attacks

* @return true if clobbered, false if safe

*/

const _isClobbered = function _isClobbered(element) {

return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function');

};

/**

* Checks whether the given object is a DOM node.

*

* @param value object to check whether it's a DOM node

* @return true is object is a DOM node

*/

const _isNode = function _isNode(value) {

return typeof Node === 'function' && value instanceof Node;

};

function _executeHooks(hooks, currentNode, data) {

arrayForEach(hooks, hook => {

hook.call(DOMPurify, currentNode, data, CONFIG);

});

}

/**

* _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

*/

const _sanitizeElements = function _sanitizeElements(currentNode) {

let content = null;

/* Execute a hook if present */

_executeHooks(hooks.beforeSanitizeElements, currentNode, null);

/* 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(currentNode.nodeName);

/* Execute a hook if present */

_executeHooks(hooks.uponSanitizeElement, currentNode, {

tagName,

allowedTags: ALLOWED_TAGS

});

/* Detect mXSS attempts abusing namespace confusion */

if (SAFE_FOR_XML && currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w!]/g, currentNode.innerHTML) && regExpTest(/<[/\w!]/g, currentNode.textContent)) {

_forceRemove(currentNode);

return true;

}

/* Remove any occurrence of processing instructions */

if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {

_forceRemove(currentNode);

return true;

}

/* Remove any kind of possibly harmful comments */

if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) {

_forceRemove(currentNode);

return true;

}

/* Remove element if anything forbids its presence */

if (!(EXTRA_ELEMENT_HANDLING.tagCheck instanceof Function && EXTRA_ELEMENT_HANDLING.tagCheck(tagName)) && (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName])) {

/* 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 */

if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {

const parentNode = getParentNode(currentNode) || currentNode.parentNode;

const childNodes = getChildNodes(currentNode) || currentNode.childNodes;

if (childNodes && parentNode) {

const childCount = childNodes.length;

for (let i = childCount - 1; i >= 0; --i) {

const childClone = cloneNode(childNodes[i], true);

childClone.__removalCount = (currentNode.__removalCount || 0) + 1;

parentNode.insertBefore(childClone, getNextSibling(currentNode));

}

}

}

_forceRemove(currentNode);

return true;

}

/* Check whether element has a valid namespace */

if (currentNode instanceof 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(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) {

_forceRemove(currentNode);

return true;

}

/* Sanitize element content to be template-safe */