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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'; - + 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(fun, thisValue, args) { + return fun.apply(thisValue, args); + }; + } + if (!construct) { + construct = function construct(Func, args) { + 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 _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; + } + 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 _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { + args[_key2] = arguments[_key2]; + } + 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', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); + const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); + 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', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', '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', '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 = '3.2.6'; + 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 { - entries, - setPrototypeOf, - isFrozen, - getPrototypeOf, - getOwnPropertyDescriptor - } = Object; + 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 { - 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(fun, thisValue, args) { - return fun.apply(thisValue, args); - }; - } - if (!construct) { - construct = function construct(Func, args) { - return new Func(...args); - }; - } - const arrayForEach = unapply(Array.prototype.forEach); - const arrayPop = unapply(Array.prototype.pop); - const arrayPush = unapply(Array.prototype.push); - 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); - + IS_ALLOWED_URI: IS_ALLOWED_URI$1 + } = EXPRESSIONS; /** - * Creates a new function that calls the given function with a specified thisArg and arguments. - * - * @param {Function} func - The function to be wrapped and called. - * @returns {Function} A new function that calls the given function with a specified thisArg and arguments. + * We consider the elements and attributes below to be safe. Ideally + * don't add any new ones but feel free to remove unwanted ones. */ - function unapply(func) { - return function (thisArg) { - for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { - args[_key - 1] = arguments[_key]; - } - return apply(func, thisArg, args); - }; - } - - /** - * Creates a new function that constructs an instance of the given constructor function with the provided arguments. - * - * @param {Function} func - The constructor function to be wrapped and called. - * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments. + /* 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`. */ - function unconstruct(func) { - return function () { - for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { - args[_key2] = arguments[_key2]; - } - return construct(func, args); - }; - } - - /** - * Add properties to a lookup table - * - * @param {Object} set - The set to which elements will be added. - * @param {Array} array - The array containing elements to be added to the set. - * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set. - * @returns {Object} The modified set with added elements. + 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; + /* 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 */ - 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} array - The array to be cleaned. - * @returns {Array} The cleaned version of the array + 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. */ - 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} object - The object to be cloned. - * @returns {Object} A new object that copies the original. + let SAFE_FOR_XML = true; + /* Decide if document with ... 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 */ - 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} object - The object to look up the getter function in its prototype chain. - * @param {String} prop - The property name for which to find the getter function. - * @returns {Function} The getter function found in the prototype chain or a fallback function. + 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. */ - 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', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); - - // SVG - const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); - 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', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns', 'slot']); - const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'targetx', 'targety', 'transform', '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); - 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):|[^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, - MUSTACHE_EXPR: MUSTACHE_EXPR, - ERB_EXPR: ERB_EXPR, - TMPLIT_EXPR: TMPLIT_EXPR, - DATA_ATTR: DATA_ATTR, - ARIA_ATTR: ARIA_ATTR, - IS_ALLOWED_URI: IS_ALLOWED_URI, - IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, - ATTR_WHITESPACE: ATTR_WHITESPACE, - DOCTYPE_NAME: DOCTYPE_NAME, - CUSTOM_ELEMENT: CUSTOM_ELEMENT - }); - - // 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 + 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; }; - 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 {TrustedTypePolicyFactory} trustedTypes The policy factory. - * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). - * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types - * are not supported or creating the policy failed). + * _parseConfig + * + * @param cfg optional config literal */ - const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { - if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { - return null; + // eslint-disable-next-line complexity + const _parseConfig = function _parseConfig() { + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + if (CONFIG && CONFIG === cfg) { + return; } - - // 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); + /* Shield configuration object from tampering */ + if (!cfg || typeof cfg !== 'object') { + cfg = {}; } - const policyName = 'dompurify' + (suffix ? '#' + suffix : ''); + /* 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 (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { + ALLOWED_TAGS = clone(ALLOWED_TAGS); + } + addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc); + } + if (cfg.ADD_ATTR) { + 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); + } + /* 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 . If it happens via any other tag, then + // it should be killed. + if (parent.namespaceURI === HTML_NAMESPACE) { + return tagName === 'svg'; + } + // The only way to switch from MathML to SVG is via` + // svg if parent is either or MathML + // text integration points. + if (parent.namespaceURI === MATHML_NAMESPACE) { + return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); + } + // We only allow elements that are defined in SVG + // spec. All others are disallowed in SVG namespace. + return Boolean(ALL_SVG_TAGS[tagName]); + } + if (element.namespaceURI === MATHML_NAMESPACE) { + // The only way to switch from HTML namespace to MathML + // is via . If it happens via any other tag, then + // it should be killed. + if (parent.namespaceURI === HTML_NAMESPACE) { + return tagName === 'math'; + } + // The only way to switch from SVG to MathML is via + // and HTML integration points + if (parent.namespaceURI === SVG_NAMESPACE) { + return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; + } + // We only allow elements that are defined in MathML + // spec. All others are disallowed in MathML namespace. + return Boolean(ALL_MATHML_TAGS[tagName]); + } + if (element.namespaceURI === HTML_NAMESPACE) { + // The only way to switch from SVG to HTML is via + // HTML integration points, and from MathML to HTML + // is via MathML text integration points + if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) { + return false; + } + if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { + return false; + } + // 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 { - return trustedTypes.createPolicy(policyName, { - createHTML(html) { - return html; - }, - createScriptURL(scriptUrl) { - return scriptUrl; - } + // 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 (_) { - // Policy creation failed (most likely another DOMPurify script has - // already run). Skip creating the policy, as this will only cause errors - // if TT are enforced. - console.warn('TrustedTypes policy ' + policyName + ' could not be created.'); - return null; - } - }; - function createDOMPurify() { - let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); - const DOMPurify = root => createDOMPurify(root); - - /** - * Version label, exposed for easier checks - * if DOMPurify is up to date or not - */ - DOMPurify.version = '3.1.6'; - - /** - * Array of elements that DOMPurify removed during sanitation. - * Empty if nothing was removed. - */ - DOMPurify.removed = []; - if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) { - // 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 = {}; - - /** - * 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; - - /* 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 ... 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); - - /* 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 {Object} 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), - // eslint-disable-line indent - cfg.ADD_URI_SAFE_ATTR, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : DEFAULT_URI_SAFE_ATTRIBUTES; - DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), - // eslint-disable-line indent - cfg.ADD_DATA_URI_TAGS, - // eslint-disable-line indent - transformCaseFunc // eslint-disable-line indent - ) // eslint-disable-line indent - : 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) : {}; - FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {}; - 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; - 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 (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { - ALLOWED_TAGS = clone(ALLOWED_TAGS); - } - addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc); - } - if (cfg.ADD_ATTR) { - 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); - } - - /* 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; - }; - const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); - const HTML_INTEGRATION_POINTS = addToSet({}, ['foreignobject', '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']); - - /* 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} element a DOM element whose namespace is being checked - * @returns {boolean} Return false if the element has a - * namespace that a spec-compliant parser would never - * return. Return true otherwise. - */ - 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 . If it happens via any other tag, then - // it should be killed. - if (parent.namespaceURI === HTML_NAMESPACE) { - return tagName === 'svg'; - } - - // The only way to switch from MathML to SVG is via` - // svg if parent is either or MathML - // text integration points. - if (parent.namespaceURI === MATHML_NAMESPACE) { - return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); - } - - // We only allow elements that are defined in SVG - // spec. All others are disallowed in SVG namespace. - return Boolean(ALL_SVG_TAGS[tagName]); - } - if (element.namespaceURI === MATHML_NAMESPACE) { - // The only way to switch from HTML namespace to MathML - // is via . If it happens via any other tag, then - // it should be killed. - if (parent.namespaceURI === HTML_NAMESPACE) { - return tagName === 'math'; - } - - // The only way to switch from SVG to MathML is via - // and HTML integration points - if (parent.namespaceURI === SVG_NAMESPACE) { - return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; - } - - // We only allow elements that are defined in MathML - // spec. All others are disallowed in MathML namespace. - return Boolean(ALL_MATHML_TAGS[tagName]); - } - if (element.namespaceURI === HTML_NAMESPACE) { - // The only way to switch from SVG to HTML is via - // HTML integration points, and from MathML to HTML - // is via MathML text integration points - if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) { - return false; - } - if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { - return false; - } - - // 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} node a DOM node - */ - const _forceRemove = function _forceRemove(node) { arrayPush(DOMPurify.removed, { - element: node + attribute: null, + from: element }); - try { - // eslint-disable-next-line unicorn/prefer-dom-node-remove - getParentNode(node).removeChild(node); - } catch (_) { - remove(node); - } - }; - - /** - * _removeAttribute - * - * @param {String} name an Attribute name - * @param {Node} node a DOM node - */ - const _removeAttribute = function _removeAttribute(name, node) { - try { - arrayPush(DOMPurify.removed, { - attribute: node.getAttributeNode(name), - from: node - }); - } catch (_) { - arrayPush(DOMPurify.removed, { - attribute: null, - from: node - }); - } - node.removeAttribute(name); - - // We void attribute values for unremovable "is"" attributes - if (name === 'is' && !ALLOWED_ATTR[name]) { - if (RETURN_DOM || RETURN_DOM_FRAGMENT) { - try { - _forceRemove(node); - } catch (_) {} - } else { - try { - node.setAttribute(name, ''); - } catch (_) {} - } - } - }; - - /** - * _initDocument - * - * @param {String} dirty a string of dirty markup - * @return {Document} a DOM, filled with the dirty markup - */ - const _initDocument = function _initDocument(dirty) { - /* Create a HTML document */ - let doc = null; - let leadingWhitespace = null; - if (FORCE_BODY) { - dirty = '' + 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 = '' + dirty + ''; - } - 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) { + } + element.removeAttribute(name); + // We void attribute values for unremovable "is" attributes + if (name === 'is') { + if (RETURN_DOM || RETURN_DOM_FRAGMENT) { try { - doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); + _forceRemove(element); + } catch (_) {} + } else { + try { + element.setAttribute(name, ''); } 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 {Node} root The root element or node to start traversing on. - * @return {NodeIterator} The created NodeIterator + } + }; + /** + * _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 = '' + 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 = '' + dirty + ''; + } + 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. */ - 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 {Node} elm element to check for clobbering attacks - * @return {Boolean} true if clobbered, false if safe - */ - const _isClobbered = function _isClobbered(elm) { - return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function'); - }; - - /** - * Checks whether the given object is a DOM node. - * - * @param {Node} object object to check whether it's a DOM node - * @return {Boolean} true is object is a DOM node - */ - const _isNode = function _isNode(object) { - return typeof Node === 'function' && object instanceof Node; - }; - - /** - * _executeHook - * Execute user configurable hooks - * - * @param {String} entryPoint Name of the hook's entry point - * @param {Node} currentNode node to work on with the hook - * @param {Object} data additional hook parameters - */ - const _executeHook = function _executeHook(entryPoint, currentNode, data) { - if (!hooks[entryPoint]) { - return; + 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 } - arrayForEach(hooks[entryPoint], hook => { - hook.call(DOMPurify, currentNode, data, CONFIG); - }); - }; - - /** - * _sanitizeElements - * - * @protect nodeName - * @protect textContent - * @protect removeChild - * - * @param {Node} currentNode to check for permission to exist - * @return {Boolean} true if node was killed, false if left alive - */ - const _sanitizeElements = function _sanitizeElements(currentNode) { - let content = null; - - /* Execute a hook if present */ - _executeHook('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 */ - _executeHook('uponSanitizeElement', currentNode, { - tagName, - allowedTags: ALLOWED_TAGS - }); - - /* Detect mXSS attempts abusing namespace confusion */ - if (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 (!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 */ - if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { - /* Get the element's text content */ - content = currentNode.textContent; - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { - content = stringReplace(content, expr, ' '); - }); - if (currentNode.textContent !== content) { - arrayPush(DOMPurify.removed, { - element: currentNode.cloneNode() - }); - currentNode.textContent = content; - } - } - - /* Execute a hook if present */ - _executeHook('afterSanitizeElements', currentNode, null); - return false; - }; - - /** - * _isValidAttribute - * - * @param {string} lcTag Lowercase tag name of containing element. - * @param {string} lcName Lowercase attribute name. - * @param {string} value Attribute value. - * @return {Boolean} Returns true if `value` is valid, otherwise false. - */ - // eslint-disable-next-line complexity - const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { - /* Make sure attribute cannot clobber */ - if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { - return false; - } - - /* 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 && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) { - 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)) || - // 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 { + } + 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 (!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; } - /* 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, ''))) ; 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, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) { - return false; - } else ; - return true; - }; - - /** - * _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 {string} tagName name of the tag of the node to sanitize - * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false. - */ - const _isBasicCustomElement = function _isBasicCustomElement(tagName) { - return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); - }; - - /** - * _sanitizeAttributes - * - * @protect attributes - * @protect nodeName - * @protect removeAttribute - * @protect setAttribute - * - * @param {Node} currentNode to sanitize - */ - const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { - /* Execute a hook if present */ - _executeHook('beforeSanitizeAttributes', currentNode, null); - const { - attributes - } = currentNode; - - /* Check if we have attributes; if not we might have a text node */ - if (!attributes) { - return; } - const hookEvent = { - attrName: '', - attrValue: '', - keepAttr: true, - allowedAttributes: ALLOWED_ATTR - }; - let l = attributes.length; - - /* Go backwards over all attributes; safely remove bad ones */ - while (l--) { - const attr = attributes[l]; - const { - name, - namespaceURI, - value: attrValue - } = attr; - const lcName = transformCaseFunc(name); - let value = name === 'value' ? attrValue : stringTrim(attrValue); - - /* 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 - _executeHook('uponSanitizeAttribute', currentNode, hookEvent); - value = hookEvent.attrValue; - - /* Work around a security issue with comments inside attributes */ - if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { - _removeAttribute(name, currentNode); - continue; - } - - /* Did the hooks approve of the attribute? */ - if (hookEvent.forceKeepAttr) { - continue; - } - - /* Remove attribute */ - _removeAttribute(name, currentNode); - - /* Did the hooks approve of the attribute? */ - if (!hookEvent.keepAttr) { - continue; - } - - /* Work around a security issue in jQuery 3.0 */ - if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { - _removeAttribute(name, currentNode); - continue; - } - - /* Sanitize attribute content to be template-safe */ - if (SAFE_FOR_TEMPLATES) { - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { - value = stringReplace(value, expr, ' '); - }); - } - - /* Is `value` valid for this attribute? */ - const lcTag = transformCaseFunc(currentNode.nodeName); - if (!_isValidAttribute(lcTag, lcName, value)) { - continue; - } - - /* Full DOM Clobbering protection via namespace isolation, - * Prefix id and name attributes with `user-content-` - */ - if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { - // 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; - } - - /* Handle attributes that require Trusted Types */ - if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { - if (namespaceURI) ; else { - switch (trustedTypes.getAttributeType(lcTag, lcName)) { - case 'TrustedHTML': - { - value = trustedTypesPolicy.createHTML(value); - break; - } - case 'TrustedScriptURL': - { - value = trustedTypesPolicy.createScriptURL(value); - break; - } - } + /* 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)); } } - - /* Handle invalid data-* attribute set by try-catching it */ + } + _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 */ + if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { + /* Get the element's text content */ + content = currentNode.textContent; + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { + content = stringReplace(content, expr, ' '); + }); + 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) { + /* Make sure attribute cannot clobber */ + if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { + return false; + } + /* 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 && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) { + 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)) || + // 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, ''))) ; 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, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) { + return false; + } else ; + return true; + }; + /** + * _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 tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); + }; + /** + * _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; + /* Check if we have attributes; if not we might have a text node */ + if (!attributes || _isClobbered(currentNode)) { + return; + } + const hookEvent = { + attrName: '', + attrValue: '', + keepAttr: true, + allowedAttributes: ALLOWED_ATTR, + forceKeepAttr: undefined + }; + let l = attributes.length; + /* Go backwards over all attributes; safely remove bad ones */ + while (l--) { + const attr = attributes[l]; + const { + name, + namespaceURI, + value: attrValue + } = attr; + 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')) { + // 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; + } + /* Work around a security issue with comments inside attributes */ + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Did the hooks approve of 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(/\/>/i, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Sanitize attribute content to be template-safe */ + if (SAFE_FOR_TEMPLATES) { + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { + value = stringReplace(value, expr, ' '); + }); + } + /* Is `value` valid for this attribute? */ + const lcTag = transformCaseFunc(currentNode.nodeName); + if (!_isValidAttribute(lcTag, lcName, value)) { + _removeAttribute(name, currentNode); + continue; + } + /* Handle attributes that require Trusted Types */ + if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { + if (namespaceURI) ; else { + switch (trustedTypes.getAttributeType(lcTag, lcName)) { + case 'TrustedHTML': + { + value = trustedTypesPolicy.createHTML(value); + break; + } + case 'TrustedScriptURL': + { + value = trustedTypesPolicy.createScriptURL(value); + break; + } + } + } + } + /* Handle invalid data-* attribute set by try-catching it */ + if (value !== initValue) { try { if (namespaceURI) { currentNode.setAttributeNS(namespaceURI, name, value); @@ -1264,300 +1142,213 @@ } else { arrayPop(DOMPurify.removed); } - } catch (_) {} + } catch (_) { + _removeAttribute(name, currentNode); + } } - + } + /* Execute a hook if present */ + _executeHooks(hooks.afterSanitizeAttributes, currentNode, null); + }; + /** + * _sanitizeShadowDOM + * + * @param fragment to iterate over recursively + */ + const _sanitizeShadowDOM = 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 */ - _executeHook('afterSanitizeAttributes', currentNode, null); - }; - - /** - * _sanitizeShadowDOM - * - * @param {DocumentFragment} fragment to iterate over recursively - */ - const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { - let shadowNode = null; - const shadowIterator = _createNodeIterator(fragment); - - /* Execute a hook if present */ - _executeHook('beforeSanitizeShadowDOM', fragment, null); - while (shadowNode = shadowIterator.nextNode()) { - /* Execute a hook if present */ - _executeHook('uponSanitizeShadowNode', shadowNode, null); - - /* Sanitize tags and elements */ - if (_sanitizeElements(shadowNode)) { - continue; - } - - /* Deep shadow DOM detected */ - if (shadowNode.content instanceof DocumentFragment) { - _sanitizeShadowDOM(shadowNode.content); - } - - /* Check attributes, sanitize if necessary */ - _sanitizeAttributes(shadowNode); + _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null); + /* Sanitize tags and elements */ + _sanitizeElements(shadowNode); + /* Check attributes next */ + _sanitizeAttributes(shadowNode); + /* Deep shadow DOM detected */ + if (shadowNode.content instanceof DocumentFragment) { + _sanitizeShadowDOM(shadowNode.content); } - - /* Execute a hook if present */ - _executeHook('afterSanitizeShadowDOM', fragment, null); - }; - - /** - * Sanitize - * Public method providing core sanitation functionality - * - * @param {String|Node} dirty string or DOM node - * @param {Object} cfg object - */ - // 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)) { - if (typeof dirty.toString === 'function') { - dirty = dirty.toString(); - if (typeof dirty !== 'string') { - throw typeErrorCreate('dirty is not a string, aborting'); - } - } else { - throw typeErrorCreate('toString is not a function'); - } - } - - /* Return dirty HTML if DOMPurify cannot run */ - if (!DOMPurify.isSupported) { - return dirty; - } - - /* Assign config vars */ - if (!SET_CONFIG) { - _parseConfig(cfg); - } - - /* Clean up removed elements */ - DOMPurify.removed = []; - - /* Check if dirty is correctly typed for IN_PLACE */ - if (typeof dirty === 'string') { - IN_PLACE = false; - } - if (IN_PLACE) { - /* Do some early pre-sanitization to avoid unsafe root nodes */ - if (dirty.nodeName) { - const tagName = transformCaseFunc(dirty.nodeName); - if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { - throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place'); - } - } - } else if (dirty instanceof Node) { - /* 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); + } + /* Execute a hook if present */ + _executeHooks(hooks.afterSanitizeShadowDOM, fragment, 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)) { + if (typeof dirty.toString === 'function') { + dirty = dirty.toString(); + if (typeof dirty !== 'string') { + throw typeErrorCreate('dirty is not a string, aborting'); } } 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 ? trustedTypesPolicy.createHTML(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 : ''; - } + throw typeErrorCreate('toString is not a function'); } - - /* Remove first element node (ours) if FORCE_BODY is set */ - if (body && FORCE_BODY) { - _forceRemove(body.firstChild); - } - - /* Get node iterator */ - const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); - - /* Now start iterating over the created document */ - while (currentNode = nodeIterator.nextNode()) { - /* Sanitize tags and elements */ - if (_sanitizeElements(currentNode)) { - continue; - } - - /* Shadow DOM detected, sanitize it */ - if (currentNode.content instanceof DocumentFragment) { - _sanitizeShadowDOM(currentNode.content); - } - - /* Check attributes, sanitize if necessary */ - _sanitizeAttributes(currentNode); - } - - /* If we sanitized `dirty` in-place, return it. */ - if (IN_PLACE) { - return dirty; - } - - /* Return sanitized string or DOM */ - if (RETURN_DOM) { - 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 = '\n' + serializedHTML; - } - - /* Sanitize final string template-safe */ - if (SAFE_FOR_TEMPLATES) { - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { - serializedHTML = stringReplace(serializedHTML, expr, ' '); - }); - } - return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; - }; - - /** - * Public method to set the configuration once - * setConfig - * - * @param {Object} cfg configuration object - */ - DOMPurify.setConfig = function () { - let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + } + /* Return dirty HTML if DOMPurify cannot run */ + if (!DOMPurify.isSupported) { + return dirty; + } + /* Assign config vars */ + if (!SET_CONFIG) { _parseConfig(cfg); - SET_CONFIG = true; - }; - - /** - * Public method to remove the configuration - * clearConfig - * - */ - DOMPurify.clearConfig = function () { - CONFIG = null; - SET_CONFIG = false; - }; - - /** - * Public method to check if an attribute value is valid. - * Uses last set config, if any. Otherwise, uses config defaults. - * isValidAttribute - * - * @param {String} tag Tag name of containing element. - * @param {String} attr Attribute name. - * @param {String} value Attribute value. - * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false. - */ - DOMPurify.isValidAttribute = function (tag, attr, value) { - /* Initialize shared config vars if necessary. */ - if (!CONFIG) { - _parseConfig({}); + } + /* Clean up removed elements */ + DOMPurify.removed = []; + /* Check if dirty is correctly typed for IN_PLACE */ + if (typeof dirty === 'string') { + IN_PLACE = false; + } + if (IN_PLACE) { + /* Do some early pre-sanitization to avoid unsafe root nodes */ + if (dirty.nodeName) { + const tagName = transformCaseFunc(dirty.nodeName); + if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { + throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place'); + } } - const lcTag = transformCaseFunc(tag); - const lcName = transformCaseFunc(attr); - return _isValidAttribute(lcTag, lcName, value); - }; - - /** - * AddHook - * Public method to add DOMPurify hooks - * - * @param {String} entryPoint entry point for the hook to add - * @param {Function} hookFunction function to execute - */ - DOMPurify.addHook = function (entryPoint, hookFunction) { - if (typeof hookFunction !== 'function') { - return; + } else if (dirty instanceof Node) { + /* 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); } - hooks[entryPoint] = hooks[entryPoint] || []; - arrayPush(hooks[entryPoint], hookFunction); - }; - - /** - * RemoveHook - * Public method to remove a DOMPurify hook at a given entryPoint - * (pops it from the stack of hooks if more are present) - * - * @param {String} entryPoint entry point for the hook to remove - * @return {Function} removed(popped) hook - */ - DOMPurify.removeHook = function (entryPoint) { - if (hooks[entryPoint]) { - return arrayPop(hooks[entryPoint]); + } 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 ? trustedTypesPolicy.createHTML(dirty) : dirty; } - }; - - /** - * RemoveHooks - * Public method to remove all DOMPurify hooks at a given entryPoint - * - * @param {String} entryPoint entry point for the hooks to remove - */ - DOMPurify.removeHooks = function (entryPoint) { - if (hooks[entryPoint]) { - hooks[entryPoint] = []; + /* 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 : ''; } - }; - - /** - * RemoveAllHooks - * Public method to remove all DOMPurify hooks - */ - DOMPurify.removeAllHooks = function () { - hooks = {}; - }; - return DOMPurify; - } - var purify = createDOMPurify(); - - return purify; - - })); - //# sourceMappingURL=purify.js.map - \ No newline at end of file + } + /* Remove first element node (ours) if FORCE_BODY is set */ + if (body && FORCE_BODY) { + _forceRemove(body.firstChild); + } + /* Get node iterator */ + const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); + /* Now start iterating over the created document */ + while (currentNode = nodeIterator.nextNode()) { + /* Sanitize tags and elements */ + _sanitizeElements(currentNode); + /* Check attributes next */ + _sanitizeAttributes(currentNode); + /* Shadow DOM detected, sanitize it */ + if (currentNode.content instanceof DocumentFragment) { + _sanitizeShadowDOM(currentNode.content); + } + } + /* If we sanitized `dirty` in-place, return it. */ + if (IN_PLACE) { + return dirty; + } + /* Return sanitized string or DOM */ + if (RETURN_DOM) { + 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 = '\n' + serializedHTML; + } + /* Sanitize final string template-safe */ + if (SAFE_FOR_TEMPLATES) { + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { + serializedHTML = stringReplace(serializedHTML, expr, ' '); + }); + } + return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; + }; + DOMPurify.setConfig = function () { + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + _parseConfig(cfg); + SET_CONFIG = true; + }; + DOMPurify.clearConfig = function () { + CONFIG = null; + SET_CONFIG = false; + }; + 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; + } + arrayPush(hooks[entryPoint], hookFunction); + }; + DOMPurify.removeHook = function (entryPoint, hookFunction) { + 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) { + hooks[entryPoint] = []; + }; + DOMPurify.removeAllHooks = function () { + hooks = _createHooksMap(); + }; + return DOMPurify; + } + var purify = createDOMPurify(); + + return purify; + +})); +//# sourceMappingURL=purify.js.map diff --git a/public/scripts/purify.js.map b/public/scripts/purify.js.map index da2a374f..1d96e3c2 100644 --- a/public/scripts/purify.js.map +++ b/public/scripts/purify.js.map @@ -1 +1 @@ -{"version":3,"file":"purify.js","sources":["../src/utils.js","../src/tags.js","../src/attrs.js","../src/regexp.js","../src/purify.js"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param {Function} func - The function to be wrapped and called.\n * @returns {Function} A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(func) {\n return (thisArg, ...args) => apply(func, thisArg, args);\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param {Function} func - The constructor function to be wrapped and called.\n * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func) {\n return (...args) => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param {Object} set - The set to which elements will be added.\n * @param {Array} array - The array containing elements to be added to the set.\n * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns {Object} The modified set with added elements.\n */\nfunction addToSet(set, array, transformCaseFunc = stringToLowerCase) {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n array[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param {Array} array - The array to be cleaned.\n * @returns {Array} The cleaned version of the array\n */\nfunction cleanArray(array) {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param {Object} object - The object to be cloned.\n * @returns {Object} A new object that copies the original.\n */\nfunction clone(object) {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param {Object} object - The object to look up the getter function in its prototype chain.\n * @param {String} prop - The property name for which to find the getter function.\n * @returns {Function} The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter(object, prop) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue() {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n]);\n\n// SVG\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n]);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n]);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n]);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n]);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n]);\n\nexport const text = freeze(['#text']);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n]);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n]);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n]);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","import * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayPop,\n arrayPush,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function () {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nfunction createDOMPurify(window = getGlobal()) {\n const DOMPurify = (root) => createDOMPurify(root);\n\n /**\n * Version label, exposed for easier checks\n * if DOMPurify is up to date or not\n */\n DOMPurify.version = VERSION;\n\n /**\n * Array of elements that DOMPurify removed during sanitation.\n * Empty if nothing was removed.\n */\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript = originalDocument.currentScript;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = {};\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (testValue) {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param {Object} cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg = {}) {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : {};\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : {};\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n const HTML_INTEGRATION_POINTS = addToSet({}, [\n 'foreignobject',\n 'annotation-xml',\n ]);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param {Element} element a DOM element whose namespace is being checked\n * @returns {boolean} Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element) {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param {Node} node a DOM node\n */\n const _forceRemove = function (node) {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param {String} name an Attribute name\n * @param {Node} node a DOM node\n */\n const _removeAttribute = function (name, node) {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: node.getAttributeNode(name),\n from: node,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: node,\n });\n }\n\n node.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\"\" attributes\n if (name === 'is' && !ALLOWED_ATTR[name]) {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(node);\n } catch (_) {}\n } else {\n try {\n node.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param {String} dirty a string of dirty markup\n * @return {Document} a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty) {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n '' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param {Node} root The root element or node to start traversing on.\n * @return {NodeIterator} The created NodeIterator\n */\n const _createNodeIterator = function (root) {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param {Node} elm element to check for clobbering attacks\n * @return {Boolean} true if clobbered, false if safe\n */\n const _isClobbered = function (elm) {\n return (\n elm instanceof HTMLFormElement &&\n (typeof elm.nodeName !== 'string' ||\n typeof elm.textContent !== 'string' ||\n typeof elm.removeChild !== 'function' ||\n !(elm.attributes instanceof NamedNodeMap) ||\n typeof elm.removeAttribute !== 'function' ||\n typeof elm.setAttribute !== 'function' ||\n typeof elm.namespaceURI !== 'string' ||\n typeof elm.insertBefore !== 'function' ||\n typeof elm.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param {Node} object object to check whether it's a DOM node\n * @return {Boolean} true is object is a DOM node\n */\n const _isNode = function (object) {\n return typeof Node === 'function' && object instanceof Node;\n };\n\n /**\n * _executeHook\n * Execute user configurable hooks\n *\n * @param {String} entryPoint Name of the hook's entry point\n * @param {Node} currentNode node to work on with the hook\n * @param {Object} data additional hook parameters\n */\n const _executeHook = function (entryPoint, currentNode, data) {\n if (!hooks[entryPoint]) {\n return;\n }\n\n arrayForEach(hooks[entryPoint], (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n };\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n *\n * @param {Node} currentNode to check for permission to exist\n * @return {Boolean} true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode) {\n let content = null;\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeElements', currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHook('uponSanitizeElement', currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeElements', currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param {string} lcTag Lowercase tag name of containing element.\n * @param {string} lcName Lowercase attribute name.\n * @param {string} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (lcTag, lcName, value) {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param {string} tagName name of the tag of the node to sanitize\n * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName) {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param {Node} currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode) {\n /* Execute a hook if present */\n _executeHook('beforeSanitizeAttributes', currentNode, null);\n\n const { attributes } = currentNode;\n\n /* Check if we have attributes; if not we might have a text node */\n if (!attributes) {\n return;\n }\n\n const hookEvent = {\n attrName: '',\n attrValue: '',\n keepAttr: true,\n allowedAttributes: ALLOWED_ATTR,\n };\n let l = attributes.length;\n\n /* Go backwards over all attributes; safely remove bad ones */\n while (l--) {\n const attr = attributes[l];\n const { name, namespaceURI, value: attrValue } = attr;\n const lcName = transformCaseFunc(name);\n\n let value = name === 'value' ? attrValue : stringTrim(attrValue);\n\n /* Execute a hook if present */\n hookEvent.attrName = lcName;\n hookEvent.attrValue = value;\n hookEvent.keepAttr = true;\n hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n _executeHook('uponSanitizeAttribute', currentNode, hookEvent);\n value = hookEvent.attrValue;\n\n /* Work around a security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Remove attribute */\n _removeAttribute(name, currentNode);\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n continue;\n }\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {}\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeAttributes', currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param {DocumentFragment} fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment) {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHook('uponSanitizeShadowNode', shadowNode, null);\n\n /* Sanitize tags and elements */\n if (_sanitizeElements(shadowNode)) {\n continue;\n }\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(shadowNode);\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeShadowDOM', fragment, null);\n };\n\n /**\n * Sanitize\n * Public method providing core sanitation functionality\n *\n * @param {String|Node} dirty string or DOM node\n * @param {Object} cfg object\n */\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string */\n IS_EMPTY_INPUT = !dirty;\n if (IS_EMPTY_INPUT) {\n dirty = '';\n }\n\n /* Stringify, in case dirty is an object */\n if (typeof dirty !== 'string' && !_isNode(dirty)) {\n if (typeof dirty.toString === 'function') {\n dirty = dirty.toString();\n if (typeof dirty !== 'string') {\n throw typeErrorCreate('dirty is not a string, aborting');\n }\n } else {\n throw typeErrorCreate('toString is not a function');\n }\n }\n\n /* Return dirty HTML if DOMPurify cannot run */\n if (!DOMPurify.isSupported) {\n return dirty;\n }\n\n /* Assign config vars */\n if (!SET_CONFIG) {\n _parseConfig(cfg);\n }\n\n /* Clean up removed elements */\n DOMPurify.removed = [];\n\n /* Check if dirty is correctly typed for IN_PLACE */\n if (typeof dirty === 'string') {\n IN_PLACE = false;\n }\n\n if (IN_PLACE) {\n /* Do some early pre-sanitization to avoid unsafe root nodes */\n if (dirty.nodeName) {\n const tagName = transformCaseFunc(dirty.nodeName);\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n throw typeErrorCreate(\n 'root node is forbidden and cannot be sanitized in-place'\n );\n }\n }\n } else if (dirty instanceof Node) {\n /* If dirty is a DOM element, append to an empty document to avoid\n elements being stripped by the parser */\n body = _initDocument('');\n importedNode = body.ownerDocument.importNode(dirty, true);\n if (\n importedNode.nodeType === NODE_TYPE.element &&\n importedNode.nodeName === 'BODY'\n ) {\n /* Node is already a body, use as is */\n body = importedNode;\n } else if (importedNode.nodeName === 'HTML') {\n body = importedNode;\n } else {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n body.appendChild(importedNode);\n }\n } else {\n /* Exit directly if we have nothing to do */\n if (\n !RETURN_DOM &&\n !SAFE_FOR_TEMPLATES &&\n !WHOLE_DOCUMENT &&\n // eslint-disable-next-line unicorn/prefer-includes\n dirty.indexOf('<') === -1\n ) {\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n }\n\n /* Initialize the document to work on */\n body = _initDocument(dirty);\n\n /* Check we have a DOM node from the data */\n if (!body) {\n return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n }\n }\n\n /* Remove first element node (ours) if FORCE_BODY is set */\n if (body && FORCE_BODY) {\n _forceRemove(body.firstChild);\n }\n\n /* Get node iterator */\n const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);\n\n /* Now start iterating over the created document */\n while ((currentNode = nodeIterator.nextNode())) {\n /* Sanitize tags and elements */\n if (_sanitizeElements(currentNode)) {\n continue;\n }\n\n /* Shadow DOM detected, sanitize it */\n if (currentNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(currentNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(currentNode);\n }\n\n /* If we sanitized `dirty` in-place, return it. */\n if (IN_PLACE) {\n return dirty;\n }\n\n /* Return sanitized string or DOM */\n if (RETURN_DOM) {\n if (RETURN_DOM_FRAGMENT) {\n returnNode = createDocumentFragment.call(body.ownerDocument);\n\n while (body.firstChild) {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n returnNode.appendChild(body.firstChild);\n }\n } else {\n returnNode = body;\n }\n\n if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n /*\n AdoptNode() is not used because internal state is not reset\n (e.g. the past names map of a HTMLFormElement), this is safe\n in theory but we would rather not risk another attack vector.\n The state that is cloned by importNode() is explicitly defined\n by the specs.\n */\n returnNode = importNode.call(originalDocument, returnNode, true);\n }\n\n return returnNode;\n }\n\n let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n\n /* Serialize doctype if allowed */\n if (\n WHOLE_DOCUMENT &&\n ALLOWED_TAGS['!doctype'] &&\n body.ownerDocument &&\n body.ownerDocument.doctype &&\n body.ownerDocument.doctype.name &&\n regExpTest(EXPRESSIONS.DOCTYPE_NAME, body.ownerDocument.doctype.name)\n ) {\n serializedHTML =\n '\\n' + serializedHTML;\n }\n\n /* Sanitize final string template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n serializedHTML = stringReplace(serializedHTML, expr, ' ');\n });\n }\n\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(serializedHTML)\n : serializedHTML;\n };\n\n /**\n * Public method to set the configuration once\n * setConfig\n *\n * @param {Object} cfg configuration object\n */\n DOMPurify.setConfig = function (cfg = {}) {\n _parseConfig(cfg);\n SET_CONFIG = true;\n };\n\n /**\n * Public method to remove the configuration\n * clearConfig\n *\n */\n DOMPurify.clearConfig = function () {\n CONFIG = null;\n SET_CONFIG = false;\n };\n\n /**\n * Public method to check if an attribute value is valid.\n * Uses last set config, if any. Otherwise, uses config defaults.\n * isValidAttribute\n *\n * @param {String} tag Tag name of containing element.\n * @param {String} attr Attribute name.\n * @param {String} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid. 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\ No newline at end of file +{"version":3,"file":"purify.js","sources":["../src/utils.ts","../src/tags.ts","../src/attrs.ts","../src/regexp.ts","../src/purify.ts"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayLastIndexOf = unapply(Array.prototype.lastIndexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\nconst arraySplice = unapply(Array.prototype.splice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param func - The function to be wrapped and called.\n * @returns A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(\n func: (thisArg: any, ...args: any[]) => T\n): (thisArg: any, ...args: any[]) => T {\n return (thisArg: any, ...args: any[]): T => {\n if (thisArg instanceof RegExp) {\n thisArg.lastIndex = 0;\n }\n\n return apply(func, thisArg, args);\n };\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param func - The constructor function to be wrapped and called.\n * @returns A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func: (...args: any[]) => T): (...args: any[]) => T {\n return (...args: any[]): T => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param set - The set to which elements will be added.\n * @param array - The array containing elements to be added to the set.\n * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns The modified set with added elements.\n */\nfunction addToSet(\n set: Record,\n array: readonly any[],\n transformCaseFunc: ReturnType> = stringToLowerCase\n): Record {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n (array as any[])[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param array - The array to be cleaned.\n * @returns The cleaned version of the array\n */\nfunction cleanArray(array: T[]): Array {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param object - The object to be cloned.\n * @returns A new object that copies the original.\n */\nfunction clone>(object: T): T {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param object - The object to look up the getter function in its prototype chain.\n * @param prop - The property name for which to find the getter function.\n * @returns The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter>(\n object: T,\n prop: string\n): ReturnType> | (() => null) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue(): null {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayLastIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n arraySplice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n] as const);\n\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n] as const);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n] as const);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n] as const);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n] as const);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n] as const);\n\nexport const text = freeze(['#text'] as const);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n] as const);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'amplitude',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'exponent',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'intercept',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'slope',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'tablevalues',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n] as const);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n] as const);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\$\\{[\\w\\W]*/gm); // eslint-disable-line unicorn/better-regex\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]+$/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","/* eslint-disable @typescript-eslint/indent */\n\nimport type { TrustedHTML, TrustedTypesWindow } from 'trusted-types/lib';\nimport type { Config, UseProfilesConfig } from './config';\nimport * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayLastIndexOf,\n arrayPop,\n arrayPush,\n arraySplice,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\nexport type { Config } from './config';\n\ndeclare const VERSION: string;\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function (): WindowLike {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param trustedTypes The policy factory.\n * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (\n trustedTypes: TrustedTypePolicyFactory,\n purifyHostElement: HTMLScriptElement\n) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nconst _createHooksMap = function (): HooksMap {\n return {\n afterSanitizeAttributes: [],\n afterSanitizeElements: [],\n afterSanitizeShadowDOM: [],\n beforeSanitizeAttributes: [],\n beforeSanitizeElements: [],\n beforeSanitizeShadowDOM: [],\n uponSanitizeAttribute: [],\n uponSanitizeElement: [],\n uponSanitizeShadowNode: [],\n };\n};\n\nfunction createDOMPurify(window: WindowLike = getGlobal()): DOMPurify {\n const DOMPurify: DOMPurify = (root: WindowLike) => createDOMPurify(root);\n\n DOMPurify.version = VERSION;\n\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document ||\n !window.Element\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript: HTMLScriptElement =\n originalDocument.currentScript as HTMLScriptElement;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || (window as any).MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = _createHooksMap();\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES: UseProfilesConfig | false = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE: null | DOMParserSupportedType = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc: null | Parameters[2] = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG: Config | null = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (\n testValue: unknown\n ): testValue is Function | RegExp {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg: Config = {}): void {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES),\n cfg.ADD_URI_SAFE_ATTR,\n transformCaseFunc\n )\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS),\n cfg.ADD_DATA_URI_TAGS,\n transformCaseFunc\n )\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : clone({});\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : clone({});\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n MATHML_TEXT_INTEGRATION_POINTS =\n cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS;\n HTML_INTEGRATION_POINTS =\n cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS;\n\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param element a DOM element whose namespace is being checked\n * @returns Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element: Element): boolean {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param node a DOM node\n */\n const _forceRemove = function (node: Node): void {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param name an Attribute name\n * @param element a DOM node\n */\n const _removeAttribute = function (name: string, element: Element): void {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: element.getAttributeNode(name),\n from: element,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: element,\n });\n }\n\n element.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\" attributes\n if (name === 'is') {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(element);\n } catch (_) {}\n } else {\n try {\n element.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param dirty - a string of dirty markup\n * @return a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty: string): Document {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n '' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param root The root element or node to start traversing on.\n * @return The created NodeIterator\n */\n const _createNodeIterator = function (root: Node): NodeIterator {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param element element to check for clobbering attacks\n * @return true if clobbered, false if safe\n */\n const _isClobbered = function (element: Element): boolean {\n return (\n element instanceof HTMLFormElement &&\n (typeof element.nodeName !== 'string' ||\n typeof element.textContent !== 'string' ||\n typeof element.removeChild !== 'function' ||\n !(element.attributes instanceof NamedNodeMap) ||\n typeof element.removeAttribute !== 'function' ||\n typeof element.setAttribute !== 'function' ||\n typeof element.namespaceURI !== 'string' ||\n typeof element.insertBefore !== 'function' ||\n typeof element.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param value object to check whether it's a DOM node\n * @return true is object is a DOM node\n */\n const _isNode = function (value: unknown): value is Node {\n return typeof Node === 'function' && value instanceof Node;\n };\n\n function _executeHooks<\n T extends\n | NodeHook\n | ElementHook\n | DocumentFragmentHook\n | UponSanitizeElementHook\n | UponSanitizeAttributeHook\n >(hooks: T[], currentNode: Parameters[0], data: Parameters[1]): void {\n arrayForEach(hooks, (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n }\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n * @param currentNode to check for permission to exist\n * @return true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode: any): boolean {\n let content = null;\n\n /* Execute a hook if present */\n _executeHooks(hooks.beforeSanitizeElements, currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHooks(hooks.uponSanitizeElement, currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n SAFE_FOR_XML &&\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w!]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w!]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHooks(hooks.afterSanitizeElements, currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param lcTag Lowercase tag name of containing element.\n * @param lcName Lowercase attribute name.\n * @param value Attribute value.\n * @return Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (\n lcTag: string,\n lcName: string,\n value: string\n ): boolean {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param tagName name of the tag of the node to sanitize\n * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName: string): RegExpMatchArray {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode: Element): void {\n /* Execute a hook if present */\n _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null);\n\n const { attributes } = currentNode;\n\n /* Check if we have attributes; if not we might have a text node */\n if (!attributes || _isClobbered(currentNode)) {\n return;\n }\n\n const hookEvent = {\n attrName: '',\n attrValue: '',\n keepAttr: true,\n allowedAttributes: ALLOWED_ATTR,\n forceKeepAttr: undefined,\n };\n let l = attributes.length;\n\n /* Go backwards over all attributes; safely remove bad ones */\n while (l--) {\n const attr = attributes[l];\n const { name, namespaceURI, value: attrValue } = attr;\n const lcName = transformCaseFunc(name);\n\n const initValue = attrValue;\n let value = name === 'value' ? initValue : stringTrim(initValue);\n\n /* Execute a hook if present */\n hookEvent.attrName = lcName;\n hookEvent.attrValue = value;\n hookEvent.keepAttr = true;\n hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent);\n value = hookEvent.attrValue;\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Work around a security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n if (value !== initValue) {\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {\n _removeAttribute(name, currentNode);\n }\n }\n }\n\n /* Execute a hook if present */\n _executeHooks(hooks.afterSanitizeAttributes, currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment: DocumentFragment): void {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null);\n\n /* Sanitize tags and elements */\n _sanitizeElements(shadowNode);\n\n /* Check attributes next */\n _sanitizeAttributes(shadowNode);\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n }\n\n /* Execute a hook if present */\n _executeHooks(hooks.afterSanitizeShadowDOM, fragment, null);\n };\n\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string */\n IS_EMPTY_INPUT = !dirty;\n if (IS_EMPTY_INPUT) {\n dirty = '';\n }\n\n /* Stringify, in case dirty is an object */\n if (typeof dirty !== 'string' && !_isNode(dirty)) {\n if (typeof dirty.toString === 'function') {\n dirty = dirty.toString();\n if (typeof dirty !== 'string') {\n throw typeErrorCreate('dirty is not a string, aborting');\n }\n } else {\n throw typeErrorCreate('toString is not a function');\n }\n }\n\n /* Return dirty HTML if DOMPurify cannot run */\n if (!DOMPurify.isSupported) {\n return dirty;\n }\n\n /* Assign config vars */\n if (!SET_CONFIG) {\n _parseConfig(cfg);\n }\n\n /* Clean up removed elements */\n DOMPurify.removed = [];\n\n /* Check if dirty is correctly typed for IN_PLACE */\n if (typeof dirty === 'string') {\n IN_PLACE = false;\n }\n\n if (IN_PLACE) {\n /* Do some early pre-sanitization to avoid unsafe root nodes */\n if ((dirty as Node).nodeName) {\n const tagName = transformCaseFunc((dirty as Node).nodeName);\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n throw typeErrorCreate(\n 'root node is forbidden and cannot be sanitized in-place'\n );\n }\n }\n } else if (dirty instanceof Node) {\n /* If dirty is a DOM element, append to an empty document to avoid\n elements being stripped by the parser */\n body = _initDocument('');\n importedNode = body.ownerDocument.importNode(dirty, true);\n if (\n importedNode.nodeType === NODE_TYPE.element &&\n importedNode.nodeName === 'BODY'\n ) {\n /* Node is already a body, use as is */\n body = importedNode;\n } else if (importedNode.nodeName === 'HTML') {\n body = importedNode;\n } else {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n body.appendChild(importedNode);\n }\n } else {\n /* Exit directly if we have nothing to do */\n if (\n !RETURN_DOM &&\n !SAFE_FOR_TEMPLATES &&\n !WHOLE_DOCUMENT &&\n // eslint-disable-next-line unicorn/prefer-includes\n dirty.indexOf('<') === -1\n ) {\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n }\n\n /* Initialize the document to work on */\n body = _initDocument(dirty);\n\n /* Check we have a DOM node from the data */\n if (!body) {\n return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n }\n }\n\n /* Remove first element node (ours) if FORCE_BODY is set */\n if (body && FORCE_BODY) {\n _forceRemove(body.firstChild);\n }\n\n /* Get node iterator */\n const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);\n\n /* Now start iterating over the created document */\n while ((currentNode = nodeIterator.nextNode())) {\n /* Sanitize tags and elements */\n _sanitizeElements(currentNode);\n\n /* Check attributes next */\n _sanitizeAttributes(currentNode);\n\n /* Shadow DOM detected, sanitize it */\n if (currentNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(currentNode.content);\n }\n }\n\n /* If we sanitized `dirty` in-place, return it. */\n if (IN_PLACE) {\n return dirty;\n }\n\n /* Return sanitized string or DOM */\n if (RETURN_DOM) {\n if (RETURN_DOM_FRAGMENT) {\n returnNode = createDocumentFragment.call(body.ownerDocument);\n\n while (body.firstChild) {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n returnNode.appendChild(body.firstChild);\n }\n } else {\n returnNode = body;\n }\n\n if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n /*\n AdoptNode() is not used because internal state is not reset\n (e.g. the past names map of a HTMLFormElement), this is safe\n in theory but we would rather not risk another attack vector.\n The state that is cloned by importNode() is explicitly defined\n by the specs.\n */\n returnNode = importNode.call(originalDocument, returnNode, true);\n }\n\n return returnNode;\n }\n\n let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n\n /* Serialize doctype if allowed */\n if (\n WHOLE_DOCUMENT &&\n ALLOWED_TAGS['!doctype'] &&\n body.ownerDocument &&\n body.ownerDocument.doctype &&\n body.ownerDocument.doctype.name &&\n regExpTest(EXPRESSIONS.DOCTYPE_NAME, body.ownerDocument.doctype.name)\n ) {\n serializedHTML =\n '\\n' + serializedHTML;\n }\n\n /* Sanitize final string template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n serializedHTML = stringReplace(serializedHTML, expr, ' ');\n });\n }\n\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(serializedHTML)\n : serializedHTML;\n };\n\n DOMPurify.setConfig = function (cfg = {}) {\n _parseConfig(cfg);\n SET_CONFIG = true;\n };\n\n DOMPurify.clearConfig = function () {\n CONFIG = null;\n SET_CONFIG = false;\n };\n\n DOMPurify.isValidAttribute = function (tag, attr, value) {\n /* Initialize shared config vars if necessary. */\n if (!CONFIG) {\n _parseConfig({});\n }\n\n const lcTag = transformCaseFunc(tag);\n const lcName = transformCaseFunc(attr);\n return _isValidAttribute(lcTag, lcName, value);\n };\n\n DOMPurify.addHook = function (entryPoint, hookFunction) {\n if (typeof hookFunction !== 'function') {\n return;\n }\n\n arrayPush(hooks[entryPoint], hookFunction);\n };\n\n DOMPurify.removeHook = function (entryPoint, hookFunction) {\n if (hookFunction !== undefined) {\n const index = arrayLastIndexOf(hooks[entryPoint], hookFunction);\n\n return index === -1\n ? undefined\n : arraySplice(hooks[entryPoint], index, 1)[0];\n }\n\n return arrayPop(hooks[entryPoint]);\n };\n\n DOMPurify.removeHooks = function (entryPoint) {\n hooks[entryPoint] = [];\n };\n\n DOMPurify.removeAllHooks = function () {\n hooks = _createHooksMap();\n };\n\n return DOMPurify;\n}\n\nexport default createDOMPurify();\n\nexport interface DOMPurify {\n /**\n * Creates a DOMPurify instance using the given window-like object. Defaults to `window`.\n */\n (root?: WindowLike): DOMPurify;\n\n /**\n * Version label, exposed for easier checks\n * if DOMPurify is up to date or not\n */\n version: string;\n\n /**\n * Array of elements that DOMPurify removed during sanitation.\n * Empty if nothing was removed.\n */\n removed: Array;\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n isSupported: boolean;\n\n /**\n * Set the configuration once.\n *\n * @param cfg configuration object\n */\n setConfig(cfg?: Config): void;\n\n /**\n * Removes the configuration.\n */\n clearConfig(): void;\n\n /**\n * Provides core sanitation functionality.\n *\n * @param dirty string or DOM node\n * @param cfg object\n * @returns Sanitized TrustedHTML.\n */\n sanitize(\n dirty: string | Node,\n cfg: Config & { RETURN_TRUSTED_TYPE: true }\n ): TrustedHTML;\n\n /**\n * Provides core sanitation functionality.\n *\n * @param dirty DOM node\n * @param cfg object\n * @returns Sanitized DOM node.\n */\n sanitize(dirty: Node, cfg: Config & { IN_PLACE: true }): Node;\n\n /**\n * Provides core sanitation functionality.\n *\n * @param dirty string or DOM node\n * @param cfg object\n * @returns Sanitized DOM node.\n */\n sanitize(dirty: string | Node, cfg: Config & { RETURN_DOM: true }): Node;\n\n /**\n * Provides core sanitation functionality.\n *\n * @param dirty string or DOM node\n * @param cfg object\n * @returns Sanitized document fragment.\n */\n sanitize(\n dirty: string | Node,\n cfg: Config & { RETURN_DOM_FRAGMENT: true }\n ): DocumentFragment;\n\n /**\n * Provides core sanitation functionality.\n *\n * @param dirty string or DOM node\n * @param cfg object\n * @returns Sanitized string.\n */\n sanitize(dirty: string | Node, cfg?: Config): string;\n\n /**\n * Checks if an attribute value is valid.\n * Uses last set config, if any. Otherwise, uses config defaults.\n *\n * @param tag Tag name of containing element.\n * @param attr Attribute name.\n * @param value Attribute value.\n * @returns Returns true if `value` is valid. Otherwise, returns false.\n */\n isValidAttribute(tag: string, attr: string, value: string): boolean;\n\n /**\n * Adds a DOMPurify hook.\n *\n * @param entryPoint entry point for the hook to add\n * @param hookFunction function to execute\n */\n addHook(entryPoint: BasicHookName, hookFunction: NodeHook): void;\n\n /**\n * Adds a DOMPurify hook.\n *\n * @param entryPoint entry point for the hook to add\n * @param hookFunction function to execute\n */\n addHook(entryPoint: ElementHookName, hookFunction: ElementHook): void;\n\n /**\n * Adds a DOMPurify hook.\n *\n * @param entryPoint entry point for the hook to add\n * @param hookFunction function to execute\n */\n addHook(\n entryPoint: DocumentFragmentHookName,\n hookFunction: DocumentFragmentHook\n ): void;\n\n /**\n * Adds a DOMPurify hook.\n *\n * @param entryPoint entry point for the hook to add\n * @param hookFunction function to execute\n */\n addHook(\n entryPoint: 'uponSanitizeElement',\n hookFunction: UponSanitizeElementHook\n ): void;\n\n /**\n * Adds a DOMPurify hook.\n *\n * @param entryPoint entry point for the hook to add\n * @param hookFunction function to execute\n */\n addHook(\n entryPoint: 'uponSanitizeAttribute',\n hookFunction: UponSanitizeAttributeHook\n ): void;\n\n /**\n * Remove a DOMPurify hook at a given entryPoint\n * (pops it from the stack of hooks if hook not specified)\n *\n * @param entryPoint entry point for the hook to remove\n * @param hookFunction optional specific hook to remove\n * @returns removed hook\n */\n removeHook(\n entryPoint: BasicHookName,\n hookFunction?: NodeHook\n ): NodeHook | undefined;\n\n /**\n * Remove a DOMPurify hook at a given entryPoint\n * (pops it from the stack of hooks if hook not specified)\n *\n * @param entryPoint entry point for the hook to remove\n * @param hookFunction optional specific hook to remove\n * @returns removed hook\n */\n removeHook(\n entryPoint: ElementHookName,\n hookFunction?: ElementHook\n ): ElementHook | undefined;\n\n /**\n * Remove a DOMPurify hook at a given entryPoint\n * (pops it from the stack of hooks if hook not specified)\n *\n * @param entryPoint entry point for the hook to remove\n * @param hookFunction optional specific hook to remove\n * @returns removed hook\n */\n removeHook(\n entryPoint: DocumentFragmentHookName,\n hookFunction?: DocumentFragmentHook\n ): DocumentFragmentHook | undefined;\n\n /**\n * Remove a DOMPurify hook at a given entryPoint\n * (pops it from the stack of hooks if hook not specified)\n *\n * @param entryPoint entry point for the hook to remove\n * @param hookFunction optional specific hook to remove\n * @returns removed hook\n */\n removeHook(\n entryPoint: 'uponSanitizeElement',\n hookFunction?: UponSanitizeElementHook\n ): UponSanitizeElementHook | undefined;\n\n /**\n * Remove a DOMPurify hook at a given entryPoint\n * (pops it from the stack of hooks if hook not specified)\n *\n * @param entryPoint entry point for the hook to remove\n * @param hookFunction optional specific hook to remove\n * @returns removed hook\n */\n removeHook(\n entryPoint: 'uponSanitizeAttribute',\n hookFunction?: UponSanitizeAttributeHook\n ): UponSanitizeAttributeHook | undefined;\n\n /**\n * Removes all DOMPurify hooks at a given entryPoint\n *\n * @param entryPoint entry point for the hooks to remove\n */\n removeHooks(entryPoint: HookName): void;\n\n /**\n * Removes all DOMPurify hooks.\n */\n removeAllHooks(): void;\n}\n\n/**\n * An element removed by DOMPurify.\n */\nexport interface RemovedElement {\n /**\n * The element that was removed.\n */\n element: Node;\n}\n\n/**\n * An element removed by DOMPurify.\n */\nexport interface RemovedAttribute {\n /**\n * The attribute that was removed.\n */\n attribute: Attr | null;\n\n /**\n * The element that the attribute was removed.\n */\n from: Node;\n}\n\ntype BasicHookName =\n | 'beforeSanitizeElements'\n | 'afterSanitizeElements'\n | 'uponSanitizeShadowNode';\ntype ElementHookName = 'beforeSanitizeAttributes' | 'afterSanitizeAttributes';\ntype DocumentFragmentHookName =\n | 'beforeSanitizeShadowDOM'\n | 'afterSanitizeShadowDOM';\ntype UponSanitizeElementHookName = 'uponSanitizeElement';\ntype UponSanitizeAttributeHookName = 'uponSanitizeAttribute';\n\ninterface HooksMap {\n beforeSanitizeElements: NodeHook[];\n afterSanitizeElements: NodeHook[];\n beforeSanitizeShadowDOM: DocumentFragmentHook[];\n uponSanitizeShadowNode: NodeHook[];\n afterSanitizeShadowDOM: DocumentFragmentHook[];\n beforeSanitizeAttributes: ElementHook[];\n afterSanitizeAttributes: ElementHook[];\n uponSanitizeElement: UponSanitizeElementHook[];\n uponSanitizeAttribute: UponSanitizeAttributeHook[];\n}\n\nexport type HookName =\n | BasicHookName\n | ElementHookName\n | DocumentFragmentHookName\n | UponSanitizeElementHookName\n | UponSanitizeAttributeHookName;\n\nexport type NodeHook = (\n this: DOMPurify,\n currentNode: Node,\n hookEvent: null,\n config: Config\n) => void;\n\nexport type ElementHook = (\n this: DOMPurify,\n currentNode: Element,\n hookEvent: null,\n config: Config\n) => void;\n\nexport type DocumentFragmentHook = (\n this: DOMPurify,\n currentNode: DocumentFragment,\n hookEvent: null,\n config: Config\n) => void;\n\nexport type UponSanitizeElementHook = (\n this: DOMPurify,\n currentNode: Node,\n hookEvent: UponSanitizeElementHookEvent,\n config: Config\n) => void;\n\nexport type UponSanitizeAttributeHook = (\n this: DOMPurify,\n currentNode: Element,\n hookEvent: UponSanitizeAttributeHookEvent,\n config: Config\n) => void;\n\nexport interface UponSanitizeElementHookEvent {\n tagName: string;\n allowedTags: Record;\n}\n\nexport interface UponSanitizeAttributeHookEvent {\n attrName: string;\n attrValue: string;\n keepAttr: boolean;\n allowedAttributes: Record;\n forceKeepAttr: boolean | undefined;\n}\n\n/**\n * A `Window`-like object containing the properties and types that DOMPurify requires.\n */\nexport type WindowLike = Pick<\n typeof globalThis,\n | 'DocumentFragment'\n | 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\ No newline at end of file diff --git a/public/scripts/purify.min.js.map b/public/scripts/purify.min.js.map index af5eff08..baaf38d8 100644 --- a/public/scripts/purify.min.js.map +++ b/public/scripts/purify.min.js.map @@ -1 +1 @@ -{"version":3,"file":"purify.min.js","sources":["../src/utils.js","../src/tags.js","../src/attrs.js","../src/regexp.js","../src/purify.js"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param {Function} func - The function to be wrapped and called.\n * @returns {Function} A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(func) {\n return (thisArg, ...args) => apply(func, thisArg, args);\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param {Function} func - The constructor function to be wrapped and called.\n * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func) {\n return (...args) => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param {Object} set - The set to which elements will be added.\n * @param {Array} array - The array containing elements to be added to the set.\n * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns {Object} The modified set with added elements.\n */\nfunction addToSet(set, array, transformCaseFunc = stringToLowerCase) {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n array[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param {Array} array - The array to be cleaned.\n * @returns {Array} The cleaned version of the array\n */\nfunction cleanArray(array) {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param {Object} object - The object to be cloned.\n * @returns {Object} A new object that copies the original.\n */\nfunction clone(object) {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param {Object} object - The object to look up the getter function in its prototype chain.\n * @param {String} prop - The property name for which to find the getter function.\n * @returns {Function} The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter(object, prop) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue() {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n]);\n\n// SVG\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n]);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n]);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n]);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n]);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n]);\n\nexport const text = freeze(['#text']);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n]);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n]);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n]);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","import * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayPop,\n arrayPush,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function () {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (trustedTypes, purifyHostElement) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nfunction createDOMPurify(window = getGlobal()) {\n const DOMPurify = (root) => createDOMPurify(root);\n\n /**\n * Version label, exposed for easier checks\n * if DOMPurify is up to date or not\n */\n DOMPurify.version = VERSION;\n\n /**\n * Array of elements that DOMPurify removed during sanitation.\n * Empty if nothing was removed.\n */\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript = originalDocument.currentScript;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = {};\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (testValue) {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param {Object} cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg = {}) {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n transformCaseFunc // eslint-disable-line indent\n ) // eslint-disable-line indent\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : {};\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : {};\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n const HTML_INTEGRATION_POINTS = addToSet({}, [\n 'foreignobject',\n 'annotation-xml',\n ]);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param {Element} element a DOM element whose namespace is being checked\n * @returns {boolean} Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element) {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param {Node} node a DOM node\n */\n const _forceRemove = function (node) {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param {String} name an Attribute name\n * @param {Node} node a DOM node\n */\n const _removeAttribute = function (name, node) {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: node.getAttributeNode(name),\n from: node,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: node,\n });\n }\n\n node.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\"\" attributes\n if (name === 'is' && !ALLOWED_ATTR[name]) {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(node);\n } catch (_) {}\n } else {\n try {\n node.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param {String} dirty a string of dirty markup\n * @return {Document} a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty) {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n '' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param {Node} root The root element or node to start traversing on.\n * @return {NodeIterator} The created NodeIterator\n */\n const _createNodeIterator = function (root) {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param {Node} elm element to check for clobbering attacks\n * @return {Boolean} true if clobbered, false if safe\n */\n const _isClobbered = function (elm) {\n return (\n elm instanceof HTMLFormElement &&\n (typeof elm.nodeName !== 'string' ||\n typeof elm.textContent !== 'string' ||\n typeof elm.removeChild !== 'function' ||\n !(elm.attributes instanceof NamedNodeMap) ||\n typeof elm.removeAttribute !== 'function' ||\n typeof elm.setAttribute !== 'function' ||\n typeof elm.namespaceURI !== 'string' ||\n typeof elm.insertBefore !== 'function' ||\n typeof elm.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param {Node} object object to check whether it's a DOM node\n * @return {Boolean} true is object is a DOM node\n */\n const _isNode = function (object) {\n return typeof Node === 'function' && object instanceof Node;\n };\n\n /**\n * _executeHook\n * Execute user configurable hooks\n *\n * @param {String} entryPoint Name of the hook's entry point\n * @param {Node} currentNode node to work on with the hook\n * @param {Object} data additional hook parameters\n */\n const _executeHook = function (entryPoint, currentNode, data) {\n if (!hooks[entryPoint]) {\n return;\n }\n\n arrayForEach(hooks[entryPoint], (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n };\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n *\n * @param {Node} currentNode to check for permission to exist\n * @return {Boolean} true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode) {\n let content = null;\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeElements', currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHook('uponSanitizeElement', currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeElements', currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param {string} lcTag Lowercase tag name of containing element.\n * @param {string} lcName Lowercase attribute name.\n * @param {string} value Attribute value.\n * @return {Boolean} Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (lcTag, lcName, value) {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param {string} tagName name of the tag of the node to sanitize\n * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName) {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param {Node} currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode) {\n /* Execute a 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security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Remove attribute */\n _removeAttribute(name, currentNode);\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n continue;\n }\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {}\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeAttributes', currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param {DocumentFragment} fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment) {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHook('uponSanitizeShadowNode', shadowNode, null);\n\n /* Sanitize tags and elements */\n if (_sanitizeElements(shadowNode)) {\n continue;\n }\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n\n /* Check attributes, sanitize if necessary */\n _sanitizeAttributes(shadowNode);\n }\n\n /* Execute a hook if present */\n _executeHook('afterSanitizeShadowDOM', fragment, null);\n };\n\n /**\n * Sanitize\n * Public method providing core sanitation functionality\n *\n * @param {String|Node} dirty string or DOM node\n * @param {Object} cfg object\n */\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string */\n IS_EMPTY_INPUT = !dirty;\n if (IS_EMPTY_INPUT) {\n dirty = '';\n }\n\n /* Stringify, in case dirty is an object */\n if (typeof dirty !== 'string' && !_isNode(dirty)) {\n if (typeof dirty.toString === 'function') {\n dirty = dirty.toString();\n if (typeof dirty !== 'string') {\n throw typeErrorCreate('dirty is not a string, aborting');\n }\n } else {\n throw typeErrorCreate('toString is not a function');\n }\n }\n\n /* Return dirty HTML if DOMPurify cannot run */\n if (!DOMPurify.isSupported) {\n return dirty;\n }\n\n /* Assign config vars */\n if (!SET_CONFIG) {\n _parseConfig(cfg);\n }\n\n /* Clean up removed elements */\n DOMPurify.removed = [];\n\n /* Check if dirty is correctly typed for IN_PLACE */\n if (typeof dirty === 'string') {\n IN_PLACE = false;\n }\n\n if (IN_PLACE) {\n /* Do some early pre-sanitization to avoid unsafe root nodes */\n if (dirty.nodeName) {\n const tagName = transformCaseFunc(dirty.nodeName);\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n throw typeErrorCreate(\n 'root node is forbidden and cannot be sanitized in-place'\n );\n }\n }\n } else if (dirty instanceof Node) {\n /* If dirty is a DOM element, append to an empty document to avoid\n elements being stripped by the parser */\n body = _initDocument('');\n importedNode = body.ownerDocument.importNode(dirty, true);\n if (\n importedNode.nodeType === NODE_TYPE.element &&\n importedNode.nodeName === 'BODY'\n ) {\n /* Node is already a body, use as is */\n body = importedNode;\n } else if (importedNode.nodeName === 'HTML') {\n body = importedNode;\n } else {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n body.appendChild(importedNode);\n }\n } else {\n /* Exit directly if we have nothing to do */\n if (\n !RETURN_DOM &&\n !SAFE_FOR_TEMPLATES &&\n !WHOLE_DOCUMENT &&\n // eslint-disable-next-line unicorn/prefer-includes\n dirty.indexOf('<') === -1\n ) {\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n 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string or DOM */\n if (RETURN_DOM) {\n if (RETURN_DOM_FRAGMENT) {\n returnNode = createDocumentFragment.call(body.ownerDocument);\n\n while (body.firstChild) {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n returnNode.appendChild(body.firstChild);\n }\n } else {\n returnNode = body;\n }\n\n if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n /*\n AdoptNode() is not used because internal state is not reset\n (e.g. the past names map of a HTMLFormElement), this is safe\n in theory but we would rather not risk another attack vector.\n The state that is cloned by importNode() is explicitly defined\n by the specs.\n */\n returnNode = importNode.call(originalDocument, returnNode, true);\n }\n\n return returnNode;\n }\n\n let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n\n /* Serialize doctype if allowed */\n if (\n WHOLE_DOCUMENT &&\n ALLOWED_TAGS['!doctype'] &&\n body.ownerDocument &&\n body.ownerDocument.doctype &&\n body.ownerDocument.doctype.name &&\n regExpTest(EXPRESSIONS.DOCTYPE_NAME, body.ownerDocument.doctype.name)\n ) {\n serializedHTML =\n '\\n' + serializedHTML;\n }\n\n /* Sanitize final string template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n serializedHTML = stringReplace(serializedHTML, expr, ' ');\n });\n }\n\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(serializedHTML)\n : serializedHTML;\n };\n\n /**\n * Public method to set the configuration once\n * setConfig\n *\n * @param {Object} cfg configuration object\n */\n DOMPurify.setConfig = function (cfg = {}) {\n _parseConfig(cfg);\n SET_CONFIG = true;\n };\n\n /**\n * Public method to remove the configuration\n * clearConfig\n *\n */\n DOMPurify.clearConfig = function () {\n CONFIG = null;\n SET_CONFIG = false;\n };\n\n /**\n * Public method to check if an attribute value is valid.\n * Uses last set config, if any. 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\ No newline at end of file +{"version":3,"file":"purify.min.js","sources":["../src/utils.ts","../src/tags.ts","../src/attrs.ts","../src/regexp.ts","../src/purify.ts"],"sourcesContent":["const {\n entries,\n setPrototypeOf,\n isFrozen,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n} = Object;\n\nlet { freeze, seal, create } = Object; // eslint-disable-line import/no-mutable-exports\nlet { apply, construct } = typeof Reflect !== 'undefined' && Reflect;\n\nif (!freeze) {\n freeze = function (x) {\n return x;\n };\n}\n\nif (!seal) {\n seal = function (x) {\n return x;\n };\n}\n\nif (!apply) {\n apply = function (fun, thisValue, args) {\n return fun.apply(thisValue, args);\n };\n}\n\nif (!construct) {\n construct = function (Func, args) {\n return new Func(...args);\n };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayIndexOf = unapply(Array.prototype.indexOf);\nconst arrayLastIndexOf = unapply(Array.prototype.lastIndexOf);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst arraySlice = unapply(Array.prototype.slice);\nconst arraySplice = unapply(Array.prototype.splice);\n\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\n\nconst objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);\n\nconst regExpTest = unapply(RegExp.prototype.test);\n\nconst typeErrorCreate = unconstruct(TypeError);\n\n/**\n * Creates a new function that calls the given function with a specified thisArg and arguments.\n *\n * @param func - The function to be wrapped and called.\n * @returns A new function that calls the given function with a specified thisArg and arguments.\n */\nfunction unapply(\n func: (thisArg: any, ...args: any[]) => T\n): (thisArg: any, ...args: any[]) => T {\n return (thisArg: any, ...args: any[]): T => {\n if (thisArg instanceof RegExp) {\n thisArg.lastIndex = 0;\n }\n\n return apply(func, thisArg, args);\n };\n}\n\n/**\n * Creates a new function that constructs an instance of the given constructor function with the provided arguments.\n *\n * @param func - The constructor function to be wrapped and called.\n * @returns A new function that constructs an instance of the given constructor function with the provided arguments.\n */\nfunction unconstruct(func: (...args: any[]) => T): (...args: any[]) => T {\n return (...args: any[]): T => construct(func, args);\n}\n\n/**\n * Add properties to a lookup table\n *\n * @param set - The set to which elements will be added.\n * @param array - The array containing elements to be added to the set.\n * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set.\n * @returns The modified set with added elements.\n */\nfunction addToSet(\n set: Record,\n array: readonly any[],\n transformCaseFunc: ReturnType> = stringToLowerCase\n): Record {\n if (setPrototypeOf) {\n // Make 'in' and truthy checks like Boolean(set.constructor)\n // independent of any properties defined on Object.prototype.\n // Prevent prototype setters from intercepting set as a this value.\n setPrototypeOf(set, null);\n }\n\n let l = array.length;\n while (l--) {\n let element = array[l];\n if (typeof element === 'string') {\n const lcElement = transformCaseFunc(element);\n if (lcElement !== element) {\n // Config presets (e.g. tags.js, attrs.js) are immutable.\n if (!isFrozen(array)) {\n (array as any[])[l] = lcElement;\n }\n\n element = lcElement;\n }\n }\n\n set[element] = true;\n }\n\n return set;\n}\n\n/**\n * Clean up an array to harden against CSPP\n *\n * @param array - The array to be cleaned.\n * @returns The cleaned version of the array\n */\nfunction cleanArray(array: T[]): Array {\n for (let index = 0; index < array.length; index++) {\n const isPropertyExist = objectHasOwnProperty(array, index);\n\n if (!isPropertyExist) {\n array[index] = null;\n }\n }\n\n return array;\n}\n\n/**\n * Shallow clone an object\n *\n * @param object - The object to be cloned.\n * @returns A new object that copies the original.\n */\nfunction clone>(object: T): T {\n const newObject = create(null);\n\n for (const [property, value] of entries(object)) {\n const isPropertyExist = objectHasOwnProperty(object, property);\n\n if (isPropertyExist) {\n if (Array.isArray(value)) {\n newObject[property] = cleanArray(value);\n } else if (\n value &&\n typeof value === 'object' &&\n value.constructor === Object\n ) {\n newObject[property] = clone(value);\n } else {\n newObject[property] = value;\n }\n }\n }\n\n return newObject;\n}\n\n/**\n * This method automatically checks if the prop is function or getter and behaves accordingly.\n *\n * @param object - The object to look up the getter function in its prototype chain.\n * @param prop - The property name for which to find the getter function.\n * @returns The getter function found in the prototype chain or a fallback function.\n */\nfunction lookupGetter>(\n object: T,\n prop: string\n): ReturnType> | (() => null) {\n while (object !== null) {\n const desc = getOwnPropertyDescriptor(object, prop);\n\n if (desc) {\n if (desc.get) {\n return unapply(desc.get);\n }\n\n if (typeof desc.value === 'function') {\n return unapply(desc.value);\n }\n }\n\n object = getPrototypeOf(object);\n }\n\n function fallbackValue(): null {\n return null;\n }\n\n return fallbackValue;\n}\n\nexport {\n // Array\n arrayForEach,\n arrayIndexOf,\n arrayLastIndexOf,\n arrayPop,\n arrayPush,\n arraySlice,\n arraySplice,\n // Object\n entries,\n freeze,\n getPrototypeOf,\n getOwnPropertyDescriptor,\n isFrozen,\n setPrototypeOf,\n seal,\n clone,\n create,\n objectHasOwnProperty,\n // RegExp\n regExpTest,\n // String\n stringIndexOf,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringTrim,\n // Errors\n typeErrorCreate,\n // Other\n lookupGetter,\n addToSet,\n // Reflect\n unapply,\n unconstruct,\n};\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'a',\n 'abbr',\n 'acronym',\n 'address',\n 'area',\n 'article',\n 'aside',\n 'audio',\n 'b',\n 'bdi',\n 'bdo',\n 'big',\n 'blink',\n 'blockquote',\n 'body',\n 'br',\n 'button',\n 'canvas',\n 'caption',\n 'center',\n 'cite',\n 'code',\n 'col',\n 'colgroup',\n 'content',\n 'data',\n 'datalist',\n 'dd',\n 'decorator',\n 'del',\n 'details',\n 'dfn',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'element',\n 'em',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'font',\n 'footer',\n 'form',\n 'h1',\n 'h2',\n 'h3',\n 'h4',\n 'h5',\n 'h6',\n 'head',\n 'header',\n 'hgroup',\n 'hr',\n 'html',\n 'i',\n 'img',\n 'input',\n 'ins',\n 'kbd',\n 'label',\n 'legend',\n 'li',\n 'main',\n 'map',\n 'mark',\n 'marquee',\n 'menu',\n 'menuitem',\n 'meter',\n 'nav',\n 'nobr',\n 'ol',\n 'optgroup',\n 'option',\n 'output',\n 'p',\n 'picture',\n 'pre',\n 'progress',\n 'q',\n 'rp',\n 'rt',\n 'ruby',\n 's',\n 'samp',\n 'section',\n 'select',\n 'shadow',\n 'small',\n 'source',\n 'spacer',\n 'span',\n 'strike',\n 'strong',\n 'style',\n 'sub',\n 'summary',\n 'sup',\n 'table',\n 'tbody',\n 'td',\n 'template',\n 'textarea',\n 'tfoot',\n 'th',\n 'thead',\n 'time',\n 'tr',\n 'track',\n 'tt',\n 'u',\n 'ul',\n 'var',\n 'video',\n 'wbr',\n] as const);\n\nexport const svg = freeze([\n 'svg',\n 'a',\n 'altglyph',\n 'altglyphdef',\n 'altglyphitem',\n 'animatecolor',\n 'animatemotion',\n 'animatetransform',\n 'circle',\n 'clippath',\n 'defs',\n 'desc',\n 'ellipse',\n 'filter',\n 'font',\n 'g',\n 'glyph',\n 'glyphref',\n 'hkern',\n 'image',\n 'line',\n 'lineargradient',\n 'marker',\n 'mask',\n 'metadata',\n 'mpath',\n 'path',\n 'pattern',\n 'polygon',\n 'polyline',\n 'radialgradient',\n 'rect',\n 'stop',\n 'style',\n 'switch',\n 'symbol',\n 'text',\n 'textpath',\n 'title',\n 'tref',\n 'tspan',\n 'view',\n 'vkern',\n] as const);\n\nexport const svgFilters = freeze([\n 'feBlend',\n 'feColorMatrix',\n 'feComponentTransfer',\n 'feComposite',\n 'feConvolveMatrix',\n 'feDiffuseLighting',\n 'feDisplacementMap',\n 'feDistantLight',\n 'feDropShadow',\n 'feFlood',\n 'feFuncA',\n 'feFuncB',\n 'feFuncG',\n 'feFuncR',\n 'feGaussianBlur',\n 'feImage',\n 'feMerge',\n 'feMergeNode',\n 'feMorphology',\n 'feOffset',\n 'fePointLight',\n 'feSpecularLighting',\n 'feSpotLight',\n 'feTile',\n 'feTurbulence',\n] as const);\n\n// List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\nexport const svgDisallowed = freeze([\n 'animate',\n 'color-profile',\n 'cursor',\n 'discard',\n 'font-face',\n 'font-face-format',\n 'font-face-name',\n 'font-face-src',\n 'font-face-uri',\n 'foreignobject',\n 'hatch',\n 'hatchpath',\n 'mesh',\n 'meshgradient',\n 'meshpatch',\n 'meshrow',\n 'missing-glyph',\n 'script',\n 'set',\n 'solidcolor',\n 'unknown',\n 'use',\n] as const);\n\nexport const mathMl = freeze([\n 'math',\n 'menclose',\n 'merror',\n 'mfenced',\n 'mfrac',\n 'mglyph',\n 'mi',\n 'mlabeledtr',\n 'mmultiscripts',\n 'mn',\n 'mo',\n 'mover',\n 'mpadded',\n 'mphantom',\n 'mroot',\n 'mrow',\n 'ms',\n 'mspace',\n 'msqrt',\n 'mstyle',\n 'msub',\n 'msup',\n 'msubsup',\n 'mtable',\n 'mtd',\n 'mtext',\n 'mtr',\n 'munder',\n 'munderover',\n 'mprescripts',\n] as const);\n\n// Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\nexport const mathMlDisallowed = freeze([\n 'maction',\n 'maligngroup',\n 'malignmark',\n 'mlongdiv',\n 'mscarries',\n 'mscarry',\n 'msgroup',\n 'mstack',\n 'msline',\n 'msrow',\n 'semantics',\n 'annotation',\n 'annotation-xml',\n 'mprescripts',\n 'none',\n] as const);\n\nexport const text = freeze(['#text'] as const);\n","import { freeze } from './utils.js';\n\nexport const html = freeze([\n 'accept',\n 'action',\n 'align',\n 'alt',\n 'autocapitalize',\n 'autocomplete',\n 'autopictureinpicture',\n 'autoplay',\n 'background',\n 'bgcolor',\n 'border',\n 'capture',\n 'cellpadding',\n 'cellspacing',\n 'checked',\n 'cite',\n 'class',\n 'clear',\n 'color',\n 'cols',\n 'colspan',\n 'controls',\n 'controlslist',\n 'coords',\n 'crossorigin',\n 'datetime',\n 'decoding',\n 'default',\n 'dir',\n 'disabled',\n 'disablepictureinpicture',\n 'disableremoteplayback',\n 'download',\n 'draggable',\n 'enctype',\n 'enterkeyhint',\n 'face',\n 'for',\n 'headers',\n 'height',\n 'hidden',\n 'high',\n 'href',\n 'hreflang',\n 'id',\n 'inputmode',\n 'integrity',\n 'ismap',\n 'kind',\n 'label',\n 'lang',\n 'list',\n 'loading',\n 'loop',\n 'low',\n 'max',\n 'maxlength',\n 'media',\n 'method',\n 'min',\n 'minlength',\n 'multiple',\n 'muted',\n 'name',\n 'nonce',\n 'noshade',\n 'novalidate',\n 'nowrap',\n 'open',\n 'optimum',\n 'pattern',\n 'placeholder',\n 'playsinline',\n 'popover',\n 'popovertarget',\n 'popovertargetaction',\n 'poster',\n 'preload',\n 'pubdate',\n 'radiogroup',\n 'readonly',\n 'rel',\n 'required',\n 'rev',\n 'reversed',\n 'role',\n 'rows',\n 'rowspan',\n 'spellcheck',\n 'scope',\n 'selected',\n 'shape',\n 'size',\n 'sizes',\n 'span',\n 'srclang',\n 'start',\n 'src',\n 'srcset',\n 'step',\n 'style',\n 'summary',\n 'tabindex',\n 'title',\n 'translate',\n 'type',\n 'usemap',\n 'valign',\n 'value',\n 'width',\n 'wrap',\n 'xmlns',\n 'slot',\n] as const);\n\nexport const svg = freeze([\n 'accent-height',\n 'accumulate',\n 'additive',\n 'alignment-baseline',\n 'amplitude',\n 'ascent',\n 'attributename',\n 'attributetype',\n 'azimuth',\n 'basefrequency',\n 'baseline-shift',\n 'begin',\n 'bias',\n 'by',\n 'class',\n 'clip',\n 'clippathunits',\n 'clip-path',\n 'clip-rule',\n 'color',\n 'color-interpolation',\n 'color-interpolation-filters',\n 'color-profile',\n 'color-rendering',\n 'cx',\n 'cy',\n 'd',\n 'dx',\n 'dy',\n 'diffuseconstant',\n 'direction',\n 'display',\n 'divisor',\n 'dur',\n 'edgemode',\n 'elevation',\n 'end',\n 'exponent',\n 'fill',\n 'fill-opacity',\n 'fill-rule',\n 'filter',\n 'filterunits',\n 'flood-color',\n 'flood-opacity',\n 'font-family',\n 'font-size',\n 'font-size-adjust',\n 'font-stretch',\n 'font-style',\n 'font-variant',\n 'font-weight',\n 'fx',\n 'fy',\n 'g1',\n 'g2',\n 'glyph-name',\n 'glyphref',\n 'gradientunits',\n 'gradienttransform',\n 'height',\n 'href',\n 'id',\n 'image-rendering',\n 'in',\n 'in2',\n 'intercept',\n 'k',\n 'k1',\n 'k2',\n 'k3',\n 'k4',\n 'kerning',\n 'keypoints',\n 'keysplines',\n 'keytimes',\n 'lang',\n 'lengthadjust',\n 'letter-spacing',\n 'kernelmatrix',\n 'kernelunitlength',\n 'lighting-color',\n 'local',\n 'marker-end',\n 'marker-mid',\n 'marker-start',\n 'markerheight',\n 'markerunits',\n 'markerwidth',\n 'maskcontentunits',\n 'maskunits',\n 'max',\n 'mask',\n 'media',\n 'method',\n 'mode',\n 'min',\n 'name',\n 'numoctaves',\n 'offset',\n 'operator',\n 'opacity',\n 'order',\n 'orient',\n 'orientation',\n 'origin',\n 'overflow',\n 'paint-order',\n 'path',\n 'pathlength',\n 'patterncontentunits',\n 'patterntransform',\n 'patternunits',\n 'points',\n 'preservealpha',\n 'preserveaspectratio',\n 'primitiveunits',\n 'r',\n 'rx',\n 'ry',\n 'radius',\n 'refx',\n 'refy',\n 'repeatcount',\n 'repeatdur',\n 'restart',\n 'result',\n 'rotate',\n 'scale',\n 'seed',\n 'shape-rendering',\n 'slope',\n 'specularconstant',\n 'specularexponent',\n 'spreadmethod',\n 'startoffset',\n 'stddeviation',\n 'stitchtiles',\n 'stop-color',\n 'stop-opacity',\n 'stroke-dasharray',\n 'stroke-dashoffset',\n 'stroke-linecap',\n 'stroke-linejoin',\n 'stroke-miterlimit',\n 'stroke-opacity',\n 'stroke',\n 'stroke-width',\n 'style',\n 'surfacescale',\n 'systemlanguage',\n 'tabindex',\n 'tablevalues',\n 'targetx',\n 'targety',\n 'transform',\n 'transform-origin',\n 'text-anchor',\n 'text-decoration',\n 'text-rendering',\n 'textlength',\n 'type',\n 'u1',\n 'u2',\n 'unicode',\n 'values',\n 'viewbox',\n 'visibility',\n 'version',\n 'vert-adv-y',\n 'vert-origin-x',\n 'vert-origin-y',\n 'width',\n 'word-spacing',\n 'wrap',\n 'writing-mode',\n 'xchannelselector',\n 'ychannelselector',\n 'x',\n 'x1',\n 'x2',\n 'xmlns',\n 'y',\n 'y1',\n 'y2',\n 'z',\n 'zoomandpan',\n] as const);\n\nexport const mathMl = freeze([\n 'accent',\n 'accentunder',\n 'align',\n 'bevelled',\n 'close',\n 'columnsalign',\n 'columnlines',\n 'columnspan',\n 'denomalign',\n 'depth',\n 'dir',\n 'display',\n 'displaystyle',\n 'encoding',\n 'fence',\n 'frame',\n 'height',\n 'href',\n 'id',\n 'largeop',\n 'length',\n 'linethickness',\n 'lspace',\n 'lquote',\n 'mathbackground',\n 'mathcolor',\n 'mathsize',\n 'mathvariant',\n 'maxsize',\n 'minsize',\n 'movablelimits',\n 'notation',\n 'numalign',\n 'open',\n 'rowalign',\n 'rowlines',\n 'rowspacing',\n 'rowspan',\n 'rspace',\n 'rquote',\n 'scriptlevel',\n 'scriptminsize',\n 'scriptsizemultiplier',\n 'selection',\n 'separator',\n 'separators',\n 'stretchy',\n 'subscriptshift',\n 'supscriptshift',\n 'symmetric',\n 'voffset',\n 'width',\n 'xmlns',\n]);\n\nexport const xml = freeze([\n 'xlink:href',\n 'xml:id',\n 'xlink:title',\n 'xml:space',\n 'xmlns:xlink',\n] as const);\n","import { seal } from './utils.js';\n\n// eslint-disable-next-line unicorn/better-regex\nexport const MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\nexport const ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nexport const TMPLIT_EXPR = seal(/\\$\\{[\\w\\W]*/gm); // eslint-disable-line unicorn/better-regex\nexport const DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]+$/); // eslint-disable-line no-useless-escape\nexport const ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\nexport const IS_ALLOWED_URI = seal(\n /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nexport const IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nexport const ATTR_WHITESPACE = seal(\n /[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nexport const DOCTYPE_NAME = seal(/^html$/i);\nexport const CUSTOM_ELEMENT = seal(/^[a-z][.\\w]*(-[.\\w]+)+$/i);\n","/* eslint-disable @typescript-eslint/indent */\n\nimport type { TrustedHTML, TrustedTypesWindow } from 'trusted-types/lib';\nimport type { Config, UseProfilesConfig } from './config';\nimport * as TAGS from './tags.js';\nimport * as ATTRS from './attrs.js';\nimport * as EXPRESSIONS from './regexp.js';\nimport {\n addToSet,\n clone,\n entries,\n freeze,\n arrayForEach,\n arrayLastIndexOf,\n arrayPop,\n arrayPush,\n arraySplice,\n stringMatch,\n stringReplace,\n stringToLowerCase,\n stringToString,\n stringIndexOf,\n stringTrim,\n regExpTest,\n typeErrorCreate,\n lookupGetter,\n create,\n objectHasOwnProperty,\n} from './utils.js';\n\nexport type { Config } from './config';\n\ndeclare const VERSION: string;\n\n// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType\nconst NODE_TYPE = {\n element: 1,\n attribute: 2,\n text: 3,\n cdataSection: 4,\n entityReference: 5, // Deprecated\n entityNode: 6, // Deprecated\n progressingInstruction: 7,\n comment: 8,\n document: 9,\n documentType: 10,\n documentFragment: 11,\n notation: 12, // Deprecated\n};\n\nconst getGlobal = function (): WindowLike {\n return typeof window === 'undefined' ? null : window;\n};\n\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param trustedTypes The policy factory.\n * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\nconst _createTrustedTypesPolicy = function (\n trustedTypes: TrustedTypePolicyFactory,\n purifyHostElement: HTMLScriptElement\n) {\n if (\n typeof trustedTypes !== 'object' ||\n typeof trustedTypes.createPolicy !== 'function'\n ) {\n return null;\n }\n\n // Allow the callers to control the unique policy name\n // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n // Policy creation with duplicate names throws in Trusted Types.\n let suffix = null;\n const ATTR_NAME = 'data-tt-policy-suffix';\n if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n suffix = purifyHostElement.getAttribute(ATTR_NAME);\n }\n\n const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n try {\n return trustedTypes.createPolicy(policyName, {\n createHTML(html) {\n return html;\n },\n createScriptURL(scriptUrl) {\n return scriptUrl;\n },\n });\n } catch (_) {\n // Policy creation failed (most likely another DOMPurify script has\n // already run). Skip creating the policy, as this will only cause errors\n // if TT are enforced.\n console.warn(\n 'TrustedTypes policy ' + policyName + ' could not be created.'\n );\n return null;\n }\n};\n\nconst _createHooksMap = function (): HooksMap {\n return {\n afterSanitizeAttributes: [],\n afterSanitizeElements: [],\n afterSanitizeShadowDOM: [],\n beforeSanitizeAttributes: [],\n beforeSanitizeElements: [],\n beforeSanitizeShadowDOM: [],\n uponSanitizeAttribute: [],\n uponSanitizeElement: [],\n uponSanitizeShadowNode: [],\n };\n};\n\nfunction createDOMPurify(window: WindowLike = getGlobal()): DOMPurify {\n const DOMPurify: DOMPurify = (root: WindowLike) => createDOMPurify(root);\n\n DOMPurify.version = VERSION;\n\n DOMPurify.removed = [];\n\n if (\n !window ||\n !window.document ||\n window.document.nodeType !== NODE_TYPE.document ||\n !window.Element\n ) {\n // Not running in a browser, provide a factory function\n // so that you can pass your own Window\n DOMPurify.isSupported = false;\n\n return DOMPurify;\n }\n\n let { document } = window;\n\n const originalDocument = document;\n const currentScript: HTMLScriptElement =\n originalDocument.currentScript as HTMLScriptElement;\n const {\n DocumentFragment,\n HTMLTemplateElement,\n Node,\n Element,\n NodeFilter,\n NamedNodeMap = window.NamedNodeMap || (window as any).MozNamedAttrMap,\n HTMLFormElement,\n DOMParser,\n trustedTypes,\n } = window;\n\n const ElementPrototype = Element.prototype;\n\n const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n const remove = lookupGetter(ElementPrototype, 'remove');\n const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n const getParentNode = lookupGetter(ElementPrototype, 'parentNode');\n\n // As per issue #47, the web-components registry is inherited by a\n // new document created via createHTMLDocument. As per the spec\n // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n // a new empty registry is used when creating a template contents owner\n // document, so we use that as our parent document to ensure nothing\n // is inherited.\n if (typeof HTMLTemplateElement === 'function') {\n const template = document.createElement('template');\n if (template.content && template.content.ownerDocument) {\n document = template.content.ownerDocument;\n }\n }\n\n let trustedTypesPolicy;\n let emptyHTML = '';\n\n const {\n implementation,\n createNodeIterator,\n createDocumentFragment,\n getElementsByTagName,\n } = document;\n const { importNode } = originalDocument;\n\n let hooks = _createHooksMap();\n\n /**\n * Expose whether this browser supports running the full DOMPurify.\n */\n DOMPurify.isSupported =\n typeof entries === 'function' &&\n typeof getParentNode === 'function' &&\n implementation &&\n implementation.createHTMLDocument !== undefined;\n\n const {\n MUSTACHE_EXPR,\n ERB_EXPR,\n TMPLIT_EXPR,\n DATA_ATTR,\n ARIA_ATTR,\n IS_SCRIPT_OR_DATA,\n ATTR_WHITESPACE,\n CUSTOM_ELEMENT,\n } = EXPRESSIONS;\n\n let { IS_ALLOWED_URI } = EXPRESSIONS;\n\n /**\n * We consider the elements and attributes below to be safe. Ideally\n * don't add any new ones but feel free to remove unwanted ones.\n */\n\n /* allowed element names */\n let ALLOWED_TAGS = null;\n const DEFAULT_ALLOWED_TAGS = addToSet({}, [\n ...TAGS.html,\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.mathMl,\n ...TAGS.text,\n ]);\n\n /* Allowed attribute names */\n let ALLOWED_ATTR = null;\n const DEFAULT_ALLOWED_ATTR = addToSet({}, [\n ...ATTRS.html,\n ...ATTRS.svg,\n ...ATTRS.mathMl,\n ...ATTRS.xml,\n ]);\n\n /*\n * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements.\n * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n */\n let CUSTOM_ELEMENT_HANDLING = Object.seal(\n create(null, {\n tagNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n attributeNameCheck: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: null,\n },\n allowCustomizedBuiltInElements: {\n writable: true,\n configurable: false,\n enumerable: true,\n value: false,\n },\n })\n );\n\n /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n let FORBID_TAGS = null;\n\n /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n let FORBID_ATTR = null;\n\n /* Decide if ARIA attributes are okay */\n let ALLOW_ARIA_ATTR = true;\n\n /* Decide if custom data attributes are okay */\n let ALLOW_DATA_ATTR = true;\n\n /* Decide if unknown protocols are okay */\n let ALLOW_UNKNOWN_PROTOCOLS = false;\n\n /* Decide if self-closing tags in attributes are allowed.\n * Usually removed due to a mXSS issue in jQuery 3.0 */\n let ALLOW_SELF_CLOSE_IN_ATTR = true;\n\n /* Output should be safe for common template engines.\n * This means, DOMPurify removes data attributes, mustaches and ERB\n */\n let SAFE_FOR_TEMPLATES = false;\n\n /* Output should be safe even for XML used within HTML and alike.\n * This means, DOMPurify removes comments when containing risky content.\n */\n let SAFE_FOR_XML = true;\n\n /* Decide if document with ... should be returned */\n let WHOLE_DOCUMENT = false;\n\n /* Track whether config is already set on this instance of DOMPurify. */\n let SET_CONFIG = false;\n\n /* Decide if all elements (e.g. style, script) must be children of\n * document.body. By default, browsers might move them to document.head */\n let FORCE_BODY = false;\n\n /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported).\n * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n */\n let RETURN_DOM = false;\n\n /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n * string (or a TrustedHTML object if Trusted Types are supported) */\n let RETURN_DOM_FRAGMENT = false;\n\n /* Try to return a Trusted Type object instead of a string, return a string in\n * case Trusted Types are not supported */\n let RETURN_TRUSTED_TYPE = false;\n\n /* Output should be free from DOM clobbering attacks?\n * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n */\n let SANITIZE_DOM = true;\n\n /* Achieve full DOM Clobbering protection by isolating the namespace of named\n * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n *\n * HTML/DOM spec rules that enable DOM Clobbering:\n * - Named Access on Window (§7.3.3)\n * - DOM Tree Accessors (§3.1.5)\n * - Form Element Parent-Child Relations (§4.10.3)\n * - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n * - HTMLCollection (§4.2.10.2)\n *\n * Namespace isolation is implemented by prefixing `id` and `name` attributes\n * with a constant string, i.e., `user-content-`\n */\n let SANITIZE_NAMED_PROPS = false;\n const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n\n /* Keep element content when removing element? */\n let KEEP_CONTENT = true;\n\n /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n * of importing it into a new Document and returning a sanitized copy */\n let IN_PLACE = false;\n\n /* Allow usage of profiles like html, svg and mathMl */\n let USE_PROFILES: UseProfilesConfig | false = {};\n\n /* Tags to ignore content of when KEEP_CONTENT is true */\n let FORBID_CONTENTS = null;\n const DEFAULT_FORBID_CONTENTS = addToSet({}, [\n 'annotation-xml',\n 'audio',\n 'colgroup',\n 'desc',\n 'foreignobject',\n 'head',\n 'iframe',\n 'math',\n 'mi',\n 'mn',\n 'mo',\n 'ms',\n 'mtext',\n 'noembed',\n 'noframes',\n 'noscript',\n 'plaintext',\n 'script',\n 'style',\n 'svg',\n 'template',\n 'thead',\n 'title',\n 'video',\n 'xmp',\n ]);\n\n /* Tags that are safe for data: URIs */\n let DATA_URI_TAGS = null;\n const DEFAULT_DATA_URI_TAGS = addToSet({}, [\n 'audio',\n 'video',\n 'img',\n 'source',\n 'image',\n 'track',\n ]);\n\n /* Attributes safe for values like \"javascript:\" */\n let URI_SAFE_ATTRIBUTES = null;\n const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, [\n 'alt',\n 'class',\n 'for',\n 'id',\n 'label',\n 'name',\n 'pattern',\n 'placeholder',\n 'role',\n 'summary',\n 'title',\n 'value',\n 'style',\n 'xmlns',\n ]);\n\n const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n /* Document namespace */\n let NAMESPACE = HTML_NAMESPACE;\n let IS_EMPTY_INPUT = false;\n\n /* Allowed XHTML+XML namespaces */\n let ALLOWED_NAMESPACES = null;\n const DEFAULT_ALLOWED_NAMESPACES = addToSet(\n {},\n [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE],\n stringToString\n );\n\n let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, [\n 'mi',\n 'mo',\n 'mn',\n 'ms',\n 'mtext',\n ]);\n\n let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);\n\n // Certain elements are allowed in both SVG and HTML\n // namespace. We need to specify them explicitly\n // so that they don't get erroneously deleted from\n // HTML namespace.\n const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, [\n 'title',\n 'style',\n 'font',\n 'a',\n 'script',\n ]);\n\n /* Parsing of strict XHTML documents */\n let PARSER_MEDIA_TYPE: null | DOMParserSupportedType = null;\n const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n let transformCaseFunc: null | Parameters[2] = null;\n\n /* Keep a reference to config to pass to hooks */\n let CONFIG: Config | null = null;\n\n /* Ideally, do not touch anything below this line */\n /* ______________________________________________ */\n\n const formElement = document.createElement('form');\n\n const isRegexOrFunction = function (\n testValue: unknown\n ): testValue is Function | RegExp {\n return testValue instanceof RegExp || testValue instanceof Function;\n };\n\n /**\n * _parseConfig\n *\n * @param cfg optional config literal\n */\n // eslint-disable-next-line complexity\n const _parseConfig = function (cfg: Config = {}): void {\n if (CONFIG && CONFIG === cfg) {\n return;\n }\n\n /* Shield configuration object from tampering */\n if (!cfg || typeof cfg !== 'object') {\n cfg = {};\n }\n\n /* Shield configuration object from prototype pollution */\n cfg = clone(cfg);\n\n PARSER_MEDIA_TYPE =\n // eslint-disable-next-line unicorn/prefer-includes\n SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1\n ? DEFAULT_PARSER_MEDIA_TYPE\n : cfg.PARSER_MEDIA_TYPE;\n\n // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n transformCaseFunc =\n PARSER_MEDIA_TYPE === 'application/xhtml+xml'\n ? stringToString\n : stringToLowerCase;\n\n /* Set configuration parameters */\n ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS')\n ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc)\n : DEFAULT_ALLOWED_TAGS;\n ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR')\n ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc)\n : DEFAULT_ALLOWED_ATTR;\n ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES')\n ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString)\n : DEFAULT_ALLOWED_NAMESPACES;\n URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR')\n ? addToSet(\n clone(DEFAULT_URI_SAFE_ATTRIBUTES),\n cfg.ADD_URI_SAFE_ATTR,\n transformCaseFunc\n )\n : DEFAULT_URI_SAFE_ATTRIBUTES;\n DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS')\n ? addToSet(\n clone(DEFAULT_DATA_URI_TAGS),\n cfg.ADD_DATA_URI_TAGS,\n transformCaseFunc\n )\n : DEFAULT_DATA_URI_TAGS;\n FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS')\n ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc)\n : DEFAULT_FORBID_CONTENTS;\n FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS')\n ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc)\n : clone({});\n FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR')\n ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc)\n : clone({});\n USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES')\n ? cfg.USE_PROFILES\n : false;\n ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true\n WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n IN_PLACE = cfg.IN_PLACE || false; // Default false\n IS_ALLOWED_URI = cfg.ALLOWED_URI_REGEXP || EXPRESSIONS.IS_ALLOWED_URI;\n NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n MATHML_TEXT_INTEGRATION_POINTS =\n cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS;\n HTML_INTEGRATION_POINTS =\n cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS;\n\n CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.tagNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)\n ) {\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck =\n cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n }\n\n if (\n cfg.CUSTOM_ELEMENT_HANDLING &&\n typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements ===\n 'boolean'\n ) {\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements =\n cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n }\n\n if (SAFE_FOR_TEMPLATES) {\n ALLOW_DATA_ATTR = false;\n }\n\n if (RETURN_DOM_FRAGMENT) {\n RETURN_DOM = true;\n }\n\n /* Parse profile info */\n if (USE_PROFILES) {\n ALLOWED_TAGS = addToSet({}, TAGS.text);\n ALLOWED_ATTR = [];\n if (USE_PROFILES.html === true) {\n addToSet(ALLOWED_TAGS, TAGS.html);\n addToSet(ALLOWED_ATTR, ATTRS.html);\n }\n\n if (USE_PROFILES.svg === true) {\n addToSet(ALLOWED_TAGS, TAGS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.svgFilters === true) {\n addToSet(ALLOWED_TAGS, TAGS.svgFilters);\n addToSet(ALLOWED_ATTR, ATTRS.svg);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n\n if (USE_PROFILES.mathMl === true) {\n addToSet(ALLOWED_TAGS, TAGS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.mathMl);\n addToSet(ALLOWED_ATTR, ATTRS.xml);\n }\n }\n\n /* Merge configuration parameters */\n if (cfg.ADD_TAGS) {\n if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n ALLOWED_TAGS = clone(ALLOWED_TAGS);\n }\n\n addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n }\n\n if (cfg.ADD_ATTR) {\n if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n ALLOWED_ATTR = clone(ALLOWED_ATTR);\n }\n\n addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n }\n\n if (cfg.ADD_URI_SAFE_ATTR) {\n addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n }\n\n if (cfg.FORBID_CONTENTS) {\n if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n FORBID_CONTENTS = clone(FORBID_CONTENTS);\n }\n\n addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n }\n\n /* Add #text in case KEEP_CONTENT is set to true */\n if (KEEP_CONTENT) {\n ALLOWED_TAGS['#text'] = true;\n }\n\n /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n if (WHOLE_DOCUMENT) {\n addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n }\n\n /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n if (ALLOWED_TAGS.table) {\n addToSet(ALLOWED_TAGS, ['tbody']);\n delete FORBID_TAGS.tbody;\n }\n\n if (cfg.TRUSTED_TYPES_POLICY) {\n if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.'\n );\n }\n\n if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n throw typeErrorCreate(\n 'TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.'\n );\n }\n\n // Overwrite existing TrustedTypes policy.\n trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;\n\n // Sign local variables required by `sanitize`.\n emptyHTML = trustedTypesPolicy.createHTML('');\n } else {\n // Uninitialized policy, attempt to initialize the internal dompurify policy.\n if (trustedTypesPolicy === undefined) {\n trustedTypesPolicy = _createTrustedTypesPolicy(\n trustedTypes,\n currentScript\n );\n }\n\n // If creating the internal policy succeeded sign internal variables.\n if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n emptyHTML = trustedTypesPolicy.createHTML('');\n }\n }\n\n // Prevent further manipulation of configuration.\n // Not available in IE8, Safari 5, etc.\n if (freeze) {\n freeze(cfg);\n }\n\n CONFIG = cfg;\n };\n\n /* Keep track of all possible SVG and MathML tags\n * so that we can perform the namespace checks\n * correctly. */\n const ALL_SVG_TAGS = addToSet({}, [\n ...TAGS.svg,\n ...TAGS.svgFilters,\n ...TAGS.svgDisallowed,\n ]);\n const ALL_MATHML_TAGS = addToSet({}, [\n ...TAGS.mathMl,\n ...TAGS.mathMlDisallowed,\n ]);\n\n /**\n * @param element a DOM element whose namespace is being checked\n * @returns Return false if the element has a\n * namespace that a spec-compliant parser would never\n * return. Return true otherwise.\n */\n const _checkValidNamespace = function (element: Element): boolean {\n let parent = getParentNode(element);\n\n // In JSDOM, if we're inside shadow DOM, then parentNode\n // can be null. We just simulate parent in this case.\n if (!parent || !parent.tagName) {\n parent = {\n namespaceURI: NAMESPACE,\n tagName: 'template',\n };\n }\n\n const tagName = stringToLowerCase(element.tagName);\n const parentTagName = stringToLowerCase(parent.tagName);\n\n if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n return false;\n }\n\n if (element.namespaceURI === SVG_NAMESPACE) {\n // The only way to switch from HTML namespace to SVG\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'svg';\n }\n\n // The only way to switch from MathML to SVG is via`\n // svg if parent is either or MathML\n // text integration points.\n if (parent.namespaceURI === MATHML_NAMESPACE) {\n return (\n tagName === 'svg' &&\n (parentTagName === 'annotation-xml' ||\n MATHML_TEXT_INTEGRATION_POINTS[parentTagName])\n );\n }\n\n // We only allow elements that are defined in SVG\n // spec. All others are disallowed in SVG namespace.\n return Boolean(ALL_SVG_TAGS[tagName]);\n }\n\n if (element.namespaceURI === MATHML_NAMESPACE) {\n // The only way to switch from HTML namespace to MathML\n // is via . If it happens via any other tag, then\n // it should be killed.\n if (parent.namespaceURI === HTML_NAMESPACE) {\n return tagName === 'math';\n }\n\n // The only way to switch from SVG to MathML is via\n // and HTML integration points\n if (parent.namespaceURI === SVG_NAMESPACE) {\n return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n }\n\n // We only allow elements that are defined in MathML\n // spec. All others are disallowed in MathML namespace.\n return Boolean(ALL_MATHML_TAGS[tagName]);\n }\n\n if (element.namespaceURI === HTML_NAMESPACE) {\n // The only way to switch from SVG to HTML is via\n // HTML integration points, and from MathML to HTML\n // is via MathML text integration points\n if (\n parent.namespaceURI === SVG_NAMESPACE &&\n !HTML_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n if (\n parent.namespaceURI === MATHML_NAMESPACE &&\n !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]\n ) {\n return false;\n }\n\n // We disallow tags that are specific for MathML\n // or SVG and should never appear in HTML namespace\n return (\n !ALL_MATHML_TAGS[tagName] &&\n (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName])\n );\n }\n\n // For XHTML and XML documents that support custom namespaces\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n ALLOWED_NAMESPACES[element.namespaceURI]\n ) {\n return true;\n }\n\n // The code should never reach this place (this means\n // that the element somehow got namespace that is not\n // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n // Return false just in case.\n return false;\n };\n\n /**\n * _forceRemove\n *\n * @param node a DOM node\n */\n const _forceRemove = function (node: Node): void {\n arrayPush(DOMPurify.removed, { element: node });\n\n try {\n // eslint-disable-next-line unicorn/prefer-dom-node-remove\n getParentNode(node).removeChild(node);\n } catch (_) {\n remove(node);\n }\n };\n\n /**\n * _removeAttribute\n *\n * @param name an Attribute name\n * @param element a DOM node\n */\n const _removeAttribute = function (name: string, element: Element): void {\n try {\n arrayPush(DOMPurify.removed, {\n attribute: element.getAttributeNode(name),\n from: element,\n });\n } catch (_) {\n arrayPush(DOMPurify.removed, {\n attribute: null,\n from: element,\n });\n }\n\n element.removeAttribute(name);\n\n // We void attribute values for unremovable \"is\" attributes\n if (name === 'is') {\n if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n try {\n _forceRemove(element);\n } catch (_) {}\n } else {\n try {\n element.setAttribute(name, '');\n } catch (_) {}\n }\n }\n };\n\n /**\n * _initDocument\n *\n * @param dirty - a string of dirty markup\n * @return a DOM, filled with the dirty markup\n */\n const _initDocument = function (dirty: string): Document {\n /* Create a HTML document */\n let doc = null;\n let leadingWhitespace = null;\n\n if (FORCE_BODY) {\n dirty = '' + dirty;\n } else {\n /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n leadingWhitespace = matches && matches[0];\n }\n\n if (\n PARSER_MEDIA_TYPE === 'application/xhtml+xml' &&\n NAMESPACE === HTML_NAMESPACE\n ) {\n // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n dirty =\n '' +\n dirty +\n '';\n }\n\n const dirtyPayload = trustedTypesPolicy\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n /*\n * Use the DOMParser API by default, fallback later if needs be\n * DOMParser not work for svg when has multiple root element.\n */\n if (NAMESPACE === HTML_NAMESPACE) {\n try {\n doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n } catch (_) {}\n }\n\n /* Use createHTMLDocument in case DOMParser is not available */\n if (!doc || !doc.documentElement) {\n doc = implementation.createDocument(NAMESPACE, 'template', null);\n try {\n doc.documentElement.innerHTML = IS_EMPTY_INPUT\n ? emptyHTML\n : dirtyPayload;\n } catch (_) {\n // Syntax error if dirtyPayload is invalid xml\n }\n }\n\n const body = doc.body || doc.documentElement;\n\n if (dirty && leadingWhitespace) {\n body.insertBefore(\n document.createTextNode(leadingWhitespace),\n body.childNodes[0] || null\n );\n }\n\n /* Work on whole document or just its body */\n if (NAMESPACE === HTML_NAMESPACE) {\n return getElementsByTagName.call(\n doc,\n WHOLE_DOCUMENT ? 'html' : 'body'\n )[0];\n }\n\n return WHOLE_DOCUMENT ? doc.documentElement : body;\n };\n\n /**\n * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.\n *\n * @param root The root element or node to start traversing on.\n * @return The created NodeIterator\n */\n const _createNodeIterator = function (root: Node): NodeIterator {\n return createNodeIterator.call(\n root.ownerDocument || root,\n root,\n // eslint-disable-next-line no-bitwise\n NodeFilter.SHOW_ELEMENT |\n NodeFilter.SHOW_COMMENT |\n NodeFilter.SHOW_TEXT |\n NodeFilter.SHOW_PROCESSING_INSTRUCTION |\n NodeFilter.SHOW_CDATA_SECTION,\n null\n );\n };\n\n /**\n * _isClobbered\n *\n * @param element element to check for clobbering attacks\n * @return true if clobbered, false if safe\n */\n const _isClobbered = function (element: Element): boolean {\n return (\n element instanceof HTMLFormElement &&\n (typeof element.nodeName !== 'string' ||\n typeof element.textContent !== 'string' ||\n typeof element.removeChild !== 'function' ||\n !(element.attributes instanceof NamedNodeMap) ||\n typeof element.removeAttribute !== 'function' ||\n typeof element.setAttribute !== 'function' ||\n typeof element.namespaceURI !== 'string' ||\n typeof element.insertBefore !== 'function' ||\n typeof element.hasChildNodes !== 'function')\n );\n };\n\n /**\n * Checks whether the given object is a DOM node.\n *\n * @param value object to check whether it's a DOM node\n * @return true is object is a DOM node\n */\n const _isNode = function (value: unknown): value is Node {\n return typeof Node === 'function' && value instanceof Node;\n };\n\n function _executeHooks<\n T extends\n | NodeHook\n | ElementHook\n | DocumentFragmentHook\n | UponSanitizeElementHook\n | UponSanitizeAttributeHook\n >(hooks: T[], currentNode: Parameters[0], data: Parameters[1]): void {\n arrayForEach(hooks, (hook) => {\n hook.call(DOMPurify, currentNode, data, CONFIG);\n });\n }\n\n /**\n * _sanitizeElements\n *\n * @protect nodeName\n * @protect textContent\n * @protect removeChild\n * @param currentNode to check for permission to exist\n * @return true if node was killed, false if left alive\n */\n const _sanitizeElements = function (currentNode: any): boolean {\n let content = null;\n\n /* Execute a hook if present */\n _executeHooks(hooks.beforeSanitizeElements, currentNode, null);\n\n /* Check if element is clobbered or can clobber */\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Now let's check the element's type and name */\n const tagName = transformCaseFunc(currentNode.nodeName);\n\n /* Execute a hook if present */\n _executeHooks(hooks.uponSanitizeElement, currentNode, {\n tagName,\n allowedTags: ALLOWED_TAGS,\n });\n\n /* Detect mXSS attempts abusing namespace confusion */\n if (\n SAFE_FOR_XML &&\n currentNode.hasChildNodes() &&\n !_isNode(currentNode.firstElementChild) &&\n regExpTest(/<[/\\w!]/g, currentNode.innerHTML) &&\n regExpTest(/<[/\\w!]/g, currentNode.textContent)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any occurrence of processing instructions */\n if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove any kind of possibly harmful comments */\n if (\n SAFE_FOR_XML &&\n currentNode.nodeType === NODE_TYPE.comment &&\n regExpTest(/<[/\\w]/g, currentNode.data)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Remove element if anything forbids its presence */\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n /* Check if we have a custom element to handle */\n if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)\n ) {\n return false;\n }\n\n if (\n CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)\n ) {\n return false;\n }\n }\n\n /* Keep content except for bad-listed elements */\n if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n if (childNodes && parentNode) {\n const childCount = childNodes.length;\n\n for (let i = childCount - 1; i >= 0; --i) {\n const childClone = cloneNode(childNodes[i], true);\n childClone.__removalCount = (currentNode.__removalCount || 0) + 1;\n parentNode.insertBefore(childClone, getNextSibling(currentNode));\n }\n }\n }\n\n _forceRemove(currentNode);\n return true;\n }\n\n /* Check whether element has a valid namespace */\n if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Make sure that older browsers don't get fallback-tag mXSS */\n if (\n (tagName === 'noscript' ||\n tagName === 'noembed' ||\n tagName === 'noframes') &&\n regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)\n ) {\n _forceRemove(currentNode);\n return true;\n }\n\n /* Sanitize element content to be template-safe */\n if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {\n /* Get the element's text content */\n content = currentNode.textContent;\n\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n content = stringReplace(content, expr, ' ');\n });\n\n if (currentNode.textContent !== content) {\n arrayPush(DOMPurify.removed, { element: currentNode.cloneNode() });\n currentNode.textContent = content;\n }\n }\n\n /* Execute a hook if present */\n _executeHooks(hooks.afterSanitizeElements, currentNode, null);\n\n return false;\n };\n\n /**\n * _isValidAttribute\n *\n * @param lcTag Lowercase tag name of containing element.\n * @param lcName Lowercase attribute name.\n * @param value Attribute value.\n * @return Returns true if `value` is valid, otherwise false.\n */\n // eslint-disable-next-line complexity\n const _isValidAttribute = function (\n lcTag: string,\n lcName: string,\n value: string\n ): boolean {\n /* Make sure attribute cannot clobber */\n if (\n SANITIZE_DOM &&\n (lcName === 'id' || lcName === 'name') &&\n (value in document || value in formElement)\n ) {\n return false;\n }\n\n /* Allow valid data-* attributes: At least one character after \"-\"\n (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n We don't need to check the value; it's always URI safe. */\n if (\n ALLOW_DATA_ATTR &&\n !FORBID_ATTR[lcName] &&\n regExpTest(DATA_ATTR, lcName)\n ) {\n // This attribute is safe\n } else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) {\n // This attribute is safe\n /* Otherwise, check the name is permitted */\n } else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n if (\n // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n (_isBasicCustomElement(lcTag) &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag))) &&\n ((CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName)) ||\n (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)))) ||\n // Alternative, second condition checks if it's an `is`-attribute, AND\n // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n (lcName === 'is' &&\n CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements &&\n ((CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp &&\n regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value)) ||\n (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function &&\n CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))))\n ) {\n // If user has supplied a regexp or function in CUSTOM_ELEMENT_HANDLING.tagNameCheck, we need to also allow derived custom elements using the same tagName test.\n // Additionally, we need to allow attributes passing the CUSTOM_ELEMENT_HANDLING.attributeNameCheck user has configured, as custom elements can define these at their own discretion.\n } else {\n return false;\n }\n /* Check value is safe. First, is attr inert? If so, is safe */\n } else if (URI_SAFE_ATTRIBUTES[lcName]) {\n // This attribute is safe\n /* Check no script, data or unknown possibly unsafe URI\n unless we know URI values are safe for that attribute */\n } else if (\n regExpTest(IS_ALLOWED_URI, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Keep image data URIs alive if src/xlink:href is allowed */\n /* Further prevent gadget XSS for dynamically built script tags */\n } else if (\n (lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') &&\n lcTag !== 'script' &&\n stringIndexOf(value, 'data:') === 0 &&\n DATA_URI_TAGS[lcTag]\n ) {\n // This attribute is safe\n /* Allow unknown protocols: This provides support for links that\n are handled by protocol handlers which may be unknown ahead of\n time, e.g. fb:, spotify: */\n } else if (\n ALLOW_UNKNOWN_PROTOCOLS &&\n !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))\n ) {\n // This attribute is safe\n /* Check for binary attributes */\n } else if (value) {\n return false;\n } else {\n // Binary attributes are safe at this point\n /* Anything else, presume unsafe, do not add it back */\n }\n\n return true;\n };\n\n /**\n * _isBasicCustomElement\n * checks if at least one dash is included in tagName, and it's not the first char\n * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n *\n * @param tagName name of the tag of the node to sanitize\n * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false.\n */\n const _isBasicCustomElement = function (tagName: string): RegExpMatchArray {\n return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);\n };\n\n /**\n * _sanitizeAttributes\n *\n * @protect attributes\n * @protect nodeName\n * @protect removeAttribute\n * @protect setAttribute\n *\n * @param currentNode to sanitize\n */\n const _sanitizeAttributes = function (currentNode: Element): void {\n /* Execute a hook if present */\n _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null);\n\n const { attributes } = currentNode;\n\n /* Check if we have attributes; if not we might have a text node */\n if (!attributes || _isClobbered(currentNode)) {\n return;\n }\n\n const hookEvent = {\n attrName: '',\n attrValue: '',\n keepAttr: true,\n allowedAttributes: ALLOWED_ATTR,\n forceKeepAttr: undefined,\n };\n let l = attributes.length;\n\n /* Go backwards over all attributes; safely remove bad ones */\n while (l--) {\n const attr = attributes[l];\n const { name, namespaceURI, value: attrValue } = attr;\n const lcName = transformCaseFunc(name);\n\n const initValue = attrValue;\n let value = name === 'value' ? initValue : stringTrim(initValue);\n\n /* Execute a hook if present */\n hookEvent.attrName = lcName;\n hookEvent.attrValue = value;\n hookEvent.keepAttr = true;\n hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent);\n value = hookEvent.attrValue;\n\n /* Full DOM Clobbering protection via namespace isolation,\n * Prefix id and name attributes with `user-content-`\n */\n if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n // Remove the attribute with this value\n _removeAttribute(name, currentNode);\n\n // Prefix the value and later re-create the attribute with the sanitized value\n value = SANITIZE_NAMED_PROPS_PREFIX + value;\n }\n\n /* Work around a security issue with comments inside attributes */\n if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\\/(style|title)/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Did the hooks approve of the attribute? */\n if (hookEvent.forceKeepAttr) {\n continue;\n }\n\n /* Did the hooks approve of the attribute? */\n if (!hookEvent.keepAttr) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Work around a security issue in jQuery 3.0 */\n if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Sanitize attribute content to be template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n value = stringReplace(value, expr, ' ');\n });\n }\n\n /* Is `value` valid for this attribute? */\n const lcTag = transformCaseFunc(currentNode.nodeName);\n if (!_isValidAttribute(lcTag, lcName, value)) {\n _removeAttribute(name, currentNode);\n continue;\n }\n\n /* Handle attributes that require Trusted Types */\n if (\n trustedTypesPolicy &&\n typeof trustedTypes === 'object' &&\n typeof trustedTypes.getAttributeType === 'function'\n ) {\n if (namespaceURI) {\n /* Namespaces are not yet supported, see https://bugs.chromium.org/p/chromium/issues/detail?id=1305293 */\n } else {\n switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n case 'TrustedHTML': {\n value = trustedTypesPolicy.createHTML(value);\n break;\n }\n\n case 'TrustedScriptURL': {\n value = trustedTypesPolicy.createScriptURL(value);\n break;\n }\n\n default: {\n break;\n }\n }\n }\n }\n\n /* Handle invalid data-* attribute set by try-catching it */\n if (value !== initValue) {\n try {\n if (namespaceURI) {\n currentNode.setAttributeNS(namespaceURI, name, value);\n } else {\n /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n currentNode.setAttribute(name, value);\n }\n\n if (_isClobbered(currentNode)) {\n _forceRemove(currentNode);\n } else {\n arrayPop(DOMPurify.removed);\n }\n } catch (_) {\n _removeAttribute(name, currentNode);\n }\n }\n }\n\n /* Execute a hook if present */\n _executeHooks(hooks.afterSanitizeAttributes, currentNode, null);\n };\n\n /**\n * _sanitizeShadowDOM\n *\n * @param fragment to iterate over recursively\n */\n const _sanitizeShadowDOM = function (fragment: DocumentFragment): void {\n let shadowNode = null;\n const shadowIterator = _createNodeIterator(fragment);\n\n /* Execute a hook if present */\n _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null);\n\n while ((shadowNode = shadowIterator.nextNode())) {\n /* Execute a hook if present */\n _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null);\n\n /* Sanitize tags and elements */\n _sanitizeElements(shadowNode);\n\n /* Check attributes next */\n _sanitizeAttributes(shadowNode);\n\n /* Deep shadow DOM detected */\n if (shadowNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(shadowNode.content);\n }\n }\n\n /* Execute a hook if present */\n _executeHooks(hooks.afterSanitizeShadowDOM, fragment, null);\n };\n\n // eslint-disable-next-line complexity\n DOMPurify.sanitize = function (dirty, cfg = {}) {\n let body = null;\n let importedNode = null;\n let currentNode = null;\n let returnNode = null;\n /* Make sure we have a string to sanitize.\n DO NOT return early, as this will return the wrong type if\n the user has requested a DOM object rather than a string */\n IS_EMPTY_INPUT = !dirty;\n if (IS_EMPTY_INPUT) {\n dirty = '';\n }\n\n /* Stringify, in case dirty is an object */\n if (typeof dirty !== 'string' && !_isNode(dirty)) {\n if (typeof dirty.toString === 'function') {\n dirty = dirty.toString();\n if (typeof dirty !== 'string') {\n throw typeErrorCreate('dirty is not a string, aborting');\n }\n } else {\n throw typeErrorCreate('toString is not a function');\n }\n }\n\n /* Return dirty HTML if DOMPurify cannot run */\n if (!DOMPurify.isSupported) {\n return dirty;\n }\n\n /* Assign config vars */\n if (!SET_CONFIG) {\n _parseConfig(cfg);\n }\n\n /* Clean up removed elements */\n DOMPurify.removed = [];\n\n /* Check if dirty is correctly typed for IN_PLACE */\n if (typeof dirty === 'string') {\n IN_PLACE = false;\n }\n\n if (IN_PLACE) {\n /* Do some early pre-sanitization to avoid unsafe root nodes */\n if ((dirty as Node).nodeName) {\n const tagName = transformCaseFunc((dirty as Node).nodeName);\n if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n throw typeErrorCreate(\n 'root node is forbidden and cannot be sanitized in-place'\n );\n }\n }\n } else if (dirty instanceof Node) {\n /* If dirty is a DOM element, append to an empty document to avoid\n elements being stripped by the parser */\n body = _initDocument('');\n importedNode = body.ownerDocument.importNode(dirty, true);\n if (\n importedNode.nodeType === NODE_TYPE.element &&\n importedNode.nodeName === 'BODY'\n ) {\n /* Node is already a body, use as is */\n body = importedNode;\n } else if (importedNode.nodeName === 'HTML') {\n body = importedNode;\n } else {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n body.appendChild(importedNode);\n }\n } else {\n /* Exit directly if we have nothing to do */\n if (\n !RETURN_DOM &&\n !SAFE_FOR_TEMPLATES &&\n !WHOLE_DOCUMENT &&\n // eslint-disable-next-line unicorn/prefer-includes\n dirty.indexOf('<') === -1\n ) {\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(dirty)\n : dirty;\n }\n\n /* Initialize the document to work on */\n body = _initDocument(dirty);\n\n /* Check we have a DOM node from the data */\n if (!body) {\n return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n }\n }\n\n /* Remove first element node (ours) if FORCE_BODY is set */\n if (body && FORCE_BODY) {\n _forceRemove(body.firstChild);\n }\n\n /* Get node iterator */\n const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);\n\n /* Now start iterating over the created document */\n while ((currentNode = nodeIterator.nextNode())) {\n /* Sanitize tags and elements */\n _sanitizeElements(currentNode);\n\n /* Check attributes next */\n _sanitizeAttributes(currentNode);\n\n /* Shadow DOM detected, sanitize it */\n if (currentNode.content instanceof DocumentFragment) {\n _sanitizeShadowDOM(currentNode.content);\n }\n }\n\n /* If we sanitized `dirty` in-place, return it. */\n if (IN_PLACE) {\n return dirty;\n }\n\n /* Return sanitized string or DOM */\n if (RETURN_DOM) {\n if (RETURN_DOM_FRAGMENT) {\n returnNode = createDocumentFragment.call(body.ownerDocument);\n\n while (body.firstChild) {\n // eslint-disable-next-line unicorn/prefer-dom-node-append\n returnNode.appendChild(body.firstChild);\n }\n } else {\n returnNode = body;\n }\n\n if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n /*\n AdoptNode() is not used because internal state is not reset\n (e.g. the past names map of a HTMLFormElement), this is safe\n in theory but we would rather not risk another attack vector.\n The state that is cloned by importNode() is explicitly defined\n by the specs.\n */\n returnNode = importNode.call(originalDocument, returnNode, true);\n }\n\n return returnNode;\n }\n\n let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n\n /* Serialize doctype if allowed */\n if (\n WHOLE_DOCUMENT &&\n ALLOWED_TAGS['!doctype'] &&\n body.ownerDocument &&\n body.ownerDocument.doctype &&\n body.ownerDocument.doctype.name &&\n regExpTest(EXPRESSIONS.DOCTYPE_NAME, body.ownerDocument.doctype.name)\n ) {\n serializedHTML =\n '\\n' + serializedHTML;\n }\n\n /* Sanitize final string template-safe */\n if (SAFE_FOR_TEMPLATES) {\n arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], (expr) => {\n serializedHTML = stringReplace(serializedHTML, expr, ' ');\n });\n }\n\n return trustedTypesPolicy && RETURN_TRUSTED_TYPE\n ? trustedTypesPolicy.createHTML(serializedHTML)\n : serializedHTML;\n };\n\n DOMPurify.setConfig = function (cfg = {}) {\n _parseConfig(cfg);\n SET_CONFIG = true;\n };\n\n DOMPurify.clearConfig = function () {\n CONFIG = null;\n SET_CONFIG = false;\n };\n\n DOMPurify.isValidAttribute = function (tag, attr, value) {\n /* Initialize shared config vars if necessary. */\n if (!CONFIG) {\n _parseConfig({});\n }\n\n const lcTag = transformCaseFunc(tag);\n const lcName = transformCaseFunc(attr);\n return _isValidAttribute(lcTag, lcName, value);\n };\n\n DOMPurify.addHook = function (entryPoint, hookFunction) {\n if (typeof hookFunction !== 'function') {\n return;\n }\n\n arrayPush(hooks[entryPoint], hookFunction);\n };\n\n DOMPurify.removeHook = function (entryPoint, hookFunction) {\n if (hookFunction !== undefined) {\n const index = arrayLastIndexOf(hooks[entryPoint], hookFunction);\n\n return index === -1\n ? undefined\n : arraySplice(hooks[entryPoint], index, 1)[0];\n }\n\n return arrayPop(hooks[entryPoint]);\n };\n\n DOMPurify.removeHooks = function (entryPoint) {\n hooks[entryPoint] = [];\n };\n\n DOMPurify.removeAllHooks = function () {\n hooks = _createHooksMap();\n };\n\n return DOMPurify;\n}\n\nexport default createDOMPurify();\n\nexport interface DOMPurify {\n /**\n * Creates a DOMPurify instance using the given window-like object. 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