@cryptotaxi247 / MeshCentral / commits / 760ee24b

update dompurify to 3.2.6

Signed-off-by: si458 <simonsmith5521@gmail.com>

si458 committed Sep 9, 2025 at 21:25 UTC 760ee24be9c6c2f5749f4d89cc7fdeb3e0446042
4 files changed +1271 -1480
public/scripts/purify-min.js
+2 -2
@@ -1,3 +1,3 @@
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3 //# sourceMappingURL=purify.min.js.map
public/scripts/purify.js
+1267 -1476
@@ -1,1257 +1,1135 @@
1 -/*! @license DOMPurify 3.1.6 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.1.6/LICENSE */
1 +/*! @license DOMPurify 3.2.6 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.6/LICENSE */
2
3 (function (global, factory) {
4 - typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
5 - typeof define === 'function' && define.amd ? define(factory) :
6 - (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.DOMPurify = factory());
7 - })(this, (function () { 'use strict';
8 -
9 - const {
10 - entries,
11 - setPrototypeOf,
12 - isFrozen,
13 - getPrototypeOf,
14 - getOwnPropertyDescriptor
15 - } = Object;
16 - let {
17 - freeze,
18 - seal,
19 - create
20 - } = Object; // eslint-disable-line import/no-mutable-exports
21 - let {
22 - apply,
23 - construct
24 - } = typeof Reflect !== 'undefined' && Reflect;
25 - if (!freeze) {
26 - freeze = function freeze(x) {
27 - return x;
28 - };
4 + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
5 + typeof define === 'function' && define.amd ? define(factory) :
6 + (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.DOMPurify = factory());
7 +})(this, (function () { 'use strict';
8 +
9 + const {
10 + entries,
11 + setPrototypeOf,
12 + isFrozen,
13 + getPrototypeOf,
14 + getOwnPropertyDescriptor
15 + } = Object;
16 + let {
17 + freeze,
18 + seal,
19 + create
20 + } = Object; // eslint-disable-line import/no-mutable-exports
21 + let {
22 + apply,
23 + construct
24 + } = typeof Reflect !== 'undefined' && Reflect;
25 + if (!freeze) {
26 + freeze = function freeze(x) {
27 + return x;
28 + };
29 + }
30 + if (!seal) {
31 + seal = function seal(x) {
32 + return x;
33 + };
34 + }
35 + if (!apply) {
36 + apply = function apply(fun, thisValue, args) {
37 + return fun.apply(thisValue, args);
38 + };
39 + }
40 + if (!construct) {
41 + construct = function construct(Func, args) {
42 + return new Func(...args);
43 + };
44 + }
45 + const arrayForEach = unapply(Array.prototype.forEach);
46 + const arrayLastIndexOf = unapply(Array.prototype.lastIndexOf);
47 + const arrayPop = unapply(Array.prototype.pop);
48 + const arrayPush = unapply(Array.prototype.push);
49 + const arraySplice = unapply(Array.prototype.splice);
50 + const stringToLowerCase = unapply(String.prototype.toLowerCase);
51 + const stringToString = unapply(String.prototype.toString);
52 + const stringMatch = unapply(String.prototype.match);
53 + const stringReplace = unapply(String.prototype.replace);
54 + const stringIndexOf = unapply(String.prototype.indexOf);
55 + const stringTrim = unapply(String.prototype.trim);
56 + const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);
57 + const regExpTest = unapply(RegExp.prototype.test);
58 + const typeErrorCreate = unconstruct(TypeError);
59 + /**
60 + * Creates a new function that calls the given function with a specified thisArg and arguments.
61 + *
62 + * @param func - The function to be wrapped and called.
63 + * @returns A new function that calls the given function with a specified thisArg and arguments.
64 + */
65 + function unapply(func) {
66 + return function (thisArg) {
67 + if (thisArg instanceof RegExp) {
68 + thisArg.lastIndex = 0;
69 + }
70 + for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
71 + args[_key - 1] = arguments[_key];
72 + }
73 + return apply(func, thisArg, args);
74 + };
75 + }
76 + /**
77 + * Creates a new function that constructs an instance of the given constructor function with the provided arguments.
78 + *
79 + * @param func - The constructor function to be wrapped and called.
80 + * @returns A new function that constructs an instance of the given constructor function with the provided arguments.
81 + */
82 + function unconstruct(func) {
83 + return function () {
84 + for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
85 + args[_key2] = arguments[_key2];
86 + }
87 + return construct(func, args);
88 + };
89 + }
90 + /**
91 + * Add properties to a lookup table
92 + *
93 + * @param set - The set to which elements will be added.
94 + * @param array - The array containing elements to be added to the set.
95 + * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set.
96 + * @returns The modified set with added elements.
97 + */
98 + function addToSet(set, array) {
99 + let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase;
100 + if (setPrototypeOf) {
101 + // Make 'in' and truthy checks like Boolean(set.constructor)
102 + // independent of any properties defined on Object.prototype.
103 + // Prevent prototype setters from intercepting set as a this value.
104 + setPrototypeOf(set, null);
105 }
30 - if (!seal) {
31 - seal = function seal(x) {
32 - return x;
33 - };
106 + let l = array.length;
107 + while (l--) {
108 + let element = array[l];
109 + if (typeof element === 'string') {
110 + const lcElement = transformCaseFunc(element);
111 + if (lcElement !== element) {
112 + // Config presets (e.g. tags.js, attrs.js) are immutable.
113 + if (!isFrozen(array)) {
114 + array[l] = lcElement;
115 + }
116 + element = lcElement;
117 + }
118 + }
119 + set[element] = true;
120 }
35 - if (!apply) {
36 - apply = function apply(fun, thisValue, args) {
37 - return fun.apply(thisValue, args);
38 - };
121 + return set;
122 + }
123 + /**
124 + * Clean up an array to harden against CSPP
125 + *
126 + * @param array - The array to be cleaned.
127 + * @returns The cleaned version of the array
128 + */
129 + function cleanArray(array) {
130 + for (let index = 0; index < array.length; index++) {
131 + const isPropertyExist = objectHasOwnProperty(array, index);
132 + if (!isPropertyExist) {
133 + array[index] = null;
134 + }
135 }
40 - if (!construct) {
41 - construct = function construct(Func, args) {
42 - return new Func(...args);
43 - };
136 + return array;
137 + }
138 + /**
139 + * Shallow clone an object
140 + *
141 + * @param object - The object to be cloned.
142 + * @returns A new object that copies the original.
143 + */
144 + function clone(object) {
145 + const newObject = create(null);
146 + for (const [property, value] of entries(object)) {
147 + const isPropertyExist = objectHasOwnProperty(object, property);
148 + if (isPropertyExist) {
149 + if (Array.isArray(value)) {
150 + newObject[property] = cleanArray(value);
151 + } else if (value && typeof value === 'object' && value.constructor === Object) {
152 + newObject[property] = clone(value);
153 + } else {
154 + newObject[property] = value;
155 + }
156 + }
157 }
45 - const arrayForEach = unapply(Array.prototype.forEach);
46 - const arrayPop = unapply(Array.prototype.pop);
47 - const arrayPush = unapply(Array.prototype.push);
48 - const stringToLowerCase = unapply(String.prototype.toLowerCase);
49 - const stringToString = unapply(String.prototype.toString);
50 - const stringMatch = unapply(String.prototype.match);
51 - const stringReplace = unapply(String.prototype.replace);
52 - const stringIndexOf = unapply(String.prototype.indexOf);
53 - const stringTrim = unapply(String.prototype.trim);
54 - const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty);
55 - const regExpTest = unapply(RegExp.prototype.test);
56 - const typeErrorCreate = unconstruct(TypeError);
57 -
58 - /**
59 - * Creates a new function that calls the given function with a specified thisArg and arguments.
60 - *
61 - * @param {Function} func - The function to be wrapped and called.
62 - * @returns {Function} A new function that calls the given function with a specified thisArg and arguments.
63 - */
64 - function unapply(func) {
65 - return function (thisArg) {
66 - for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
67 - args[_key - 1] = arguments[_key];
158 + return newObject;
159 + }
160 + /**
161 + * This method automatically checks if the prop is function or getter and behaves accordingly.
162 + *
163 + * @param object - The object to look up the getter function in its prototype chain.
164 + * @param prop - The property name for which to find the getter function.
165 + * @returns The getter function found in the prototype chain or a fallback function.
166 + */
167 + function lookupGetter(object, prop) {
168 + while (object !== null) {
169 + const desc = getOwnPropertyDescriptor(object, prop);
170 + if (desc) {
171 + if (desc.get) {
172 + return unapply(desc.get);
173 + }
174 + if (typeof desc.value === 'function') {
175 + return unapply(desc.value);
176 }
69 - return apply(func, thisArg, args);
70 - };
177 + }
178 + object = getPrototypeOf(object);
179 + }
180 + function fallbackValue() {
181 + return null;
182 + }
183 + return fallbackValue;
184 + }
185 +
186 + 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']);
187 + 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']);
188 + 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']);
189 + // List of SVG elements that are disallowed by default.
190 + // We still need to know them so that we can do namespace
191 + // checks properly in case one wants to add them to
192 + // allow-list.
193 + 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']);
194 + 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']);
195 + // Similarly to SVG, we want to know all MathML elements,
196 + // even those that we disallow by default.
197 + const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
198 + const text = freeze(['#text']);
199 +
200 + 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']);
201 + 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']);
202 + 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']);
203 + const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
204 +
205 + // eslint-disable-next-line unicorn/better-regex
206 + const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
207 + const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm);
208 + const TMPLIT_EXPR = seal(/\$\{[\w\W]*/gm); // eslint-disable-line unicorn/better-regex
209 + const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape
210 + const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
211 + const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp|matrix):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
212 + );
213 + const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
214 + const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
215 + );
216 + const DOCTYPE_NAME = seal(/^html$/i);
217 + const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i);
218 +
219 + var EXPRESSIONS = /*#__PURE__*/Object.freeze({
220 + __proto__: null,
221 + ARIA_ATTR: ARIA_ATTR,
222 + ATTR_WHITESPACE: ATTR_WHITESPACE,
223 + CUSTOM_ELEMENT: CUSTOM_ELEMENT,
224 + DATA_ATTR: DATA_ATTR,
225 + DOCTYPE_NAME: DOCTYPE_NAME,
226 + ERB_EXPR: ERB_EXPR,
227 + IS_ALLOWED_URI: IS_ALLOWED_URI,
228 + IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,
229 + MUSTACHE_EXPR: MUSTACHE_EXPR,
230 + TMPLIT_EXPR: TMPLIT_EXPR
231 + });
232 +
233 + /* eslint-disable @typescript-eslint/indent */
234 + // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
235 + const NODE_TYPE = {
236 + element: 1,
237 + attribute: 2,
238 + text: 3,
239 + cdataSection: 4,
240 + entityReference: 5,
241 + // Deprecated
242 + entityNode: 6,
243 + // Deprecated
244 + progressingInstruction: 7,
245 + comment: 8,
246 + document: 9,
247 + documentType: 10,
248 + documentFragment: 11,
249 + notation: 12 // Deprecated
250 + };
251 + const getGlobal = function getGlobal() {
252 + return typeof window === 'undefined' ? null : window;
253 + };
254 + /**
255 + * Creates a no-op policy for internal use only.
256 + * Don't export this function outside this module!
257 + * @param trustedTypes The policy factory.
258 + * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
259 + * @return The policy created (or null, if Trusted Types
260 + * are not supported or creating the policy failed).
261 + */
262 + const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
263 + if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
264 + return null;
265 + }
266 + // Allow the callers to control the unique policy name
267 + // by adding a data-tt-policy-suffix to the script element with the DOMPurify.
268 + // Policy creation with duplicate names throws in Trusted Types.
269 + let suffix = null;
270 + const ATTR_NAME = 'data-tt-policy-suffix';
271 + if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
272 + suffix = purifyHostElement.getAttribute(ATTR_NAME);
273 + }
274 + const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
275 + try {
276 + return trustedTypes.createPolicy(policyName, {
277 + createHTML(html) {
278 + return html;
279 + },
280 + createScriptURL(scriptUrl) {
281 + return scriptUrl;
282 + }
283 + });
284 + } catch (_) {
285 + // Policy creation failed (most likely another DOMPurify script has
286 + // already run). Skip creating the policy, as this will only cause errors
287 + // if TT are enforced.
288 + console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
289 + return null;
290 + }
291 + };
292 + const _createHooksMap = function _createHooksMap() {
293 + return {
294 + afterSanitizeAttributes: [],
295 + afterSanitizeElements: [],
296 + afterSanitizeShadowDOM: [],
297 + beforeSanitizeAttributes: [],
298 + beforeSanitizeElements: [],
299 + beforeSanitizeShadowDOM: [],
300 + uponSanitizeAttribute: [],
301 + uponSanitizeElement: [],
302 + uponSanitizeShadowNode: []
303 + };
304 + };
305 + function createDOMPurify() {
306 + let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
307 + const DOMPurify = root => createDOMPurify(root);
308 + DOMPurify.version = '3.2.6';
309 + DOMPurify.removed = [];
310 + if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document || !window.Element) {
311 + // Not running in a browser, provide a factory function
312 + // so that you can pass your own Window
313 + DOMPurify.isSupported = false;
314 + return DOMPurify;
315 }
72 -
316 + let {
317 + document
318 + } = window;
319 + const originalDocument = document;
320 + const currentScript = originalDocument.currentScript;
321 + const {
322 + DocumentFragment,
323 + HTMLTemplateElement,
324 + Node,
325 + Element,
326 + NodeFilter,
327 + NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,
328 + HTMLFormElement,
329 + DOMParser,
330 + trustedTypes
331 + } = window;
332 + const ElementPrototype = Element.prototype;
333 + const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
334 + const remove = lookupGetter(ElementPrototype, 'remove');
335 + const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
336 + const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
337 + const getParentNode = lookupGetter(ElementPrototype, 'parentNode');
338 + // As per issue #47, the web-components registry is inherited by a
339 + // new document created via createHTMLDocument. As per the spec
340 + // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
341 + // a new empty registry is used when creating a template contents owner
342 + // document, so we use that as our parent document to ensure nothing
343 + // is inherited.
344 + if (typeof HTMLTemplateElement === 'function') {
345 + const template = document.createElement('template');
346 + if (template.content && template.content.ownerDocument) {
347 + document = template.content.ownerDocument;
348 + }
349 + }
350 + let trustedTypesPolicy;
351 + let emptyHTML = '';
352 + const {
353 + implementation,
354 + createNodeIterator,
355 + createDocumentFragment,
356 + getElementsByTagName
357 + } = document;
358 + const {
359 + importNode
360 + } = originalDocument;
361 + let hooks = _createHooksMap();
362 /**
74 - * Creates a new function that constructs an instance of the given constructor function with the provided arguments.
75 - *
76 - * @param {Function} func - The constructor function to be wrapped and called.
77 - * @returns {Function} A new function that constructs an instance of the given constructor function with the provided arguments.
363 + * Expose whether this browser supports running the full DOMPurify.
364 */
79 - function unconstruct(func) {
80 - return function () {
81 - for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
82 - args[_key2] = arguments[_key2];
83 - }
84 - return construct(func, args);
85 - };
86 - }
87 -
365 + DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
366 + const {
367 + MUSTACHE_EXPR,
368 + ERB_EXPR,
369 + TMPLIT_EXPR,
370 + DATA_ATTR,
371 + ARIA_ATTR,
372 + IS_SCRIPT_OR_DATA,
373 + ATTR_WHITESPACE,
374 + CUSTOM_ELEMENT
375 + } = EXPRESSIONS;
376 + let {
377 + IS_ALLOWED_URI: IS_ALLOWED_URI$1
378 + } = EXPRESSIONS;
379 /**
89 - * Add properties to a lookup table
90 - *
91 - * @param {Object} set - The set to which elements will be added.
92 - * @param {Array} array - The array containing elements to be added to the set.
93 - * @param {Function} transformCaseFunc - An optional function to transform the case of each element before adding to the set.
94 - * @returns {Object} The modified set with added elements.
380 + * We consider the elements and attributes below to be safe. Ideally
381 + * don't add any new ones but feel free to remove unwanted ones.
382 */
96 - function addToSet(set, array) {
97 - let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase;
98 - if (setPrototypeOf) {
99 - // Make 'in' and truthy checks like Boolean(set.constructor)
100 - // independent of any properties defined on Object.prototype.
101 - // Prevent prototype setters from intercepting set as a this value.
102 - setPrototypeOf(set, null);
103 - }
104 - let l = array.length;
105 - while (l--) {
106 - let element = array[l];
107 - if (typeof element === 'string') {
108 - const lcElement = transformCaseFunc(element);
109 - if (lcElement !== element) {
110 - // Config presets (e.g. tags.js, attrs.js) are immutable.
111 - if (!isFrozen(array)) {
112 - array[l] = lcElement;
113 - }
114 - element = lcElement;
115 - }
116 - }
117 - set[element] = true;
383 + /* allowed element names */
384 + let ALLOWED_TAGS = null;
385 + const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
386 + /* Allowed attribute names */
387 + let ALLOWED_ATTR = null;
388 + const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
389 + /*
390 + * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements.
391 + * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
392 + * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
393 + * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
394 + */
395 + let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, {
396 + tagNameCheck: {
397 + writable: true,
398 + configurable: false,
399 + enumerable: true,
400 + value: null
401 + },
402 + attributeNameCheck: {
403 + writable: true,
404 + configurable: false,
405 + enumerable: true,
406 + value: null
407 + },
408 + allowCustomizedBuiltInElements: {
409 + writable: true,
410 + configurable: false,
411 + enumerable: true,
412 + value: false
413 }
119 - return set;
120 - }
121 -
122 - /**
123 - * Clean up an array to harden against CSPP
414 + }));
415 + /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
416 + let FORBID_TAGS = null;
417 + /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
418 + let FORBID_ATTR = null;
419 + /* Decide if ARIA attributes are okay */
420 + let ALLOW_ARIA_ATTR = true;
421 + /* Decide if custom data attributes are okay */
422 + let ALLOW_DATA_ATTR = true;
423 + /* Decide if unknown protocols are okay */
424 + let ALLOW_UNKNOWN_PROTOCOLS = false;
425 + /* Decide if self-closing tags in attributes are allowed.
426 + * Usually removed due to a mXSS issue in jQuery 3.0 */
427 + let ALLOW_SELF_CLOSE_IN_ATTR = true;
428 + /* Output should be safe for common template engines.
429 + * This means, DOMPurify removes data attributes, mustaches and ERB
430 + */
431 + let SAFE_FOR_TEMPLATES = false;
432 + /* Output should be safe even for XML used within HTML and alike.
433 + * This means, DOMPurify removes comments when containing risky content.
434 + */
435 + let SAFE_FOR_XML = true;
436 + /* Decide if document with <html>... should be returned */
437 + let WHOLE_DOCUMENT = false;
438 + /* Track whether config is already set on this instance of DOMPurify. */
439 + let SET_CONFIG = false;
440 + /* Decide if all elements (e.g. style, script) must be children of
441 + * document.body. By default, browsers might move them to document.head */
442 + let FORCE_BODY = false;
443 + /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
444 + * string (or a TrustedHTML object if Trusted Types are supported).
445 + * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
446 + */
447 + let RETURN_DOM = false;
448 + /* Decide if a DOM `DocumentFragment` should be returned, instead of a html
449 + * string (or a TrustedHTML object if Trusted Types are supported) */
450 + let RETURN_DOM_FRAGMENT = false;
451 + /* Try to return a Trusted Type object instead of a string, return a string in
452 + * case Trusted Types are not supported */
453 + let RETURN_TRUSTED_TYPE = false;
454 + /* Output should be free from DOM clobbering attacks?
455 + * This sanitizes markups named with colliding, clobberable built-in DOM APIs.
456 + */
457 + let SANITIZE_DOM = true;
458 + /* Achieve full DOM Clobbering protection by isolating the namespace of named
459 + * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
460 *
125 - * @param {Array} array - The array to be cleaned.
126 - * @returns {Array} The cleaned version of the array
461 + * HTML/DOM spec rules that enable DOM Clobbering:
462 + * - Named Access on Window (§7.3.3)
463 + * - DOM Tree Accessors (§3.1.5)
464 + * - Form Element Parent-Child Relations (§4.10.3)
465 + * - Iframe srcdoc / Nested WindowProxies (§4.8.5)
466 + * - HTMLCollection (§4.2.10.2)
467 + *
468 + * Namespace isolation is implemented by prefixing `id` and `name` attributes
469 + * with a constant string, i.e., `user-content-`
470 */
128 - function cleanArray(array) {
129 - for (let index = 0; index < array.length; index++) {
130 - const isPropertyExist = objectHasOwnProperty(array, index);
131 - if (!isPropertyExist) {
132 - array[index] = null;
133 - }
134 - }
135 - return array;
136 - }
137 -
471 + let SANITIZE_NAMED_PROPS = false;
472 + const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
473 + /* Keep element content when removing element? */
474 + let KEEP_CONTENT = true;
475 + /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
476 + * of importing it into a new Document and returning a sanitized copy */
477 + let IN_PLACE = false;
478 + /* Allow usage of profiles like html, svg and mathMl */
479 + let USE_PROFILES = {};
480 + /* Tags to ignore content of when KEEP_CONTENT is true */
481 + let FORBID_CONTENTS = null;
482 + 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']);
483 + /* Tags that are safe for data: URIs */
484 + let DATA_URI_TAGS = null;
485 + const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
486 + /* Attributes safe for values like "javascript:" */
487 + let URI_SAFE_ATTRIBUTES = null;
488 + const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
489 + const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
490 + const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
491 + const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
492 + /* Document namespace */
493 + let NAMESPACE = HTML_NAMESPACE;
494 + let IS_EMPTY_INPUT = false;
495 + /* Allowed XHTML+XML namespaces */
496 + let ALLOWED_NAMESPACES = null;
497 + const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
498 + let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);
499 + let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']);
500 + // Certain elements are allowed in both SVG and HTML
501 + // namespace. We need to specify them explicitly
502 + // so that they don't get erroneously deleted from
503 + // HTML namespace.
504 + const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
505 + /* Parsing of strict XHTML documents */
506 + let PARSER_MEDIA_TYPE = null;
507 + const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
508 + const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
509 + let transformCaseFunc = null;
510 + /* Keep a reference to config to pass to hooks */
511 + let CONFIG = null;
512 + /* Ideally, do not touch anything below this line */
513 + /* ______________________________________________ */
514 + const formElement = document.createElement('form');
515 + const isRegexOrFunction = function isRegexOrFunction(testValue) {
516 + return testValue instanceof RegExp || testValue instanceof Function;
517 + };
518 /**
139 - * Shallow clone an object
519 + * _parseConfig
520 *
141 - * @param {Object} object - The object to be cloned.
142 - * @returns {Object} A new object that copies the original.
521 + * @param cfg optional config literal
522 */
144 - function clone(object) {
145 - const newObject = create(null);
146 - for (const [property, value] of entries(object)) {
147 - const isPropertyExist = objectHasOwnProperty(object, property);
148 - if (isPropertyExist) {
149 - if (Array.isArray(value)) {
150 - newObject[property] = cleanArray(value);
151 - } else if (value && typeof value === 'object' && value.constructor === Object) {
152 - newObject[property] = clone(value);
153 - } else {
154 - newObject[property] = value;
155 - }
523 + // eslint-disable-next-line complexity
524 + const _parseConfig = function _parseConfig() {
525 + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
526 + if (CONFIG && CONFIG === cfg) {
527 + return;
528 + }
529 + /* Shield configuration object from tampering */
530 + if (!cfg || typeof cfg !== 'object') {
531 + cfg = {};
532 + }
533 + /* Shield configuration object from prototype pollution */
534 + cfg = clone(cfg);
535 + PARSER_MEDIA_TYPE =
536 + // eslint-disable-next-line unicorn/prefer-includes
537 + SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE;
538 + // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
539 + transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;
540 + /* Set configuration parameters */
541 + ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;
542 + ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;
543 + ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;
544 + 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;
545 + 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;
546 + FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;
547 + FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : clone({});
548 + FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : clone({});
549 + USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES : false;
550 + ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
551 + ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
552 + ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
553 + ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
554 + SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
555 + SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true
556 + WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
557 + RETURN_DOM = cfg.RETURN_DOM || false; // Default false
558 + RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
559 + RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
560 + FORCE_BODY = cfg.FORCE_BODY || false; // Default false
561 + SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
562 + SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
563 + KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
564 + IN_PLACE = cfg.IN_PLACE || false; // Default false
565 + IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;
566 + NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;
567 + MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS;
568 + HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS;
569 + CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};
570 + if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {
571 + CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;
572 + }
573 + if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {
574 + CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;
575 + }
576 + if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {
577 + CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;
578 + }
579 + if (SAFE_FOR_TEMPLATES) {
580 + ALLOW_DATA_ATTR = false;
581 + }
582 + if (RETURN_DOM_FRAGMENT) {
583 + RETURN_DOM = true;
584 + }
585 + /* Parse profile info */
586 + if (USE_PROFILES) {
587 + ALLOWED_TAGS = addToSet({}, text);
588 + ALLOWED_ATTR = [];
589 + if (USE_PROFILES.html === true) {
590 + addToSet(ALLOWED_TAGS, html$1);
591 + addToSet(ALLOWED_ATTR, html);
592 + }
593 + if (USE_PROFILES.svg === true) {
594 + addToSet(ALLOWED_TAGS, svg$1);
595 + addToSet(ALLOWED_ATTR, svg);
596 + addToSet(ALLOWED_ATTR, xml);
597 + }
598 + if (USE_PROFILES.svgFilters === true) {
599 + addToSet(ALLOWED_TAGS, svgFilters);
600 + addToSet(ALLOWED_ATTR, svg);
601 + addToSet(ALLOWED_ATTR, xml);
602 + }
603 + if (USE_PROFILES.mathMl === true) {
604 + addToSet(ALLOWED_TAGS, mathMl$1);
605 + addToSet(ALLOWED_ATTR, mathMl);
606 + addToSet(ALLOWED_ATTR, xml);
607 }
608 }
158 - return newObject;
159 - }
160 -
609 + /* Merge configuration parameters */
610 + if (cfg.ADD_TAGS) {
611 + if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
612 + ALLOWED_TAGS = clone(ALLOWED_TAGS);
613 + }
614 + addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
615 + }
616 + if (cfg.ADD_ATTR) {
617 + if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
618 + ALLOWED_ATTR = clone(ALLOWED_ATTR);
619 + }
620 + addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
621 + }
622 + if (cfg.ADD_URI_SAFE_ATTR) {
623 + addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
624 + }
625 + if (cfg.FORBID_CONTENTS) {
626 + if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
627 + FORBID_CONTENTS = clone(FORBID_CONTENTS);
628 + }
629 + addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
630 + }
631 + /* Add #text in case KEEP_CONTENT is set to true */
632 + if (KEEP_CONTENT) {
633 + ALLOWED_TAGS['#text'] = true;
634 + }
635 + /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
636 + if (WHOLE_DOCUMENT) {
637 + addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
638 + }
639 + /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
640 + if (ALLOWED_TAGS.table) {
641 + addToSet(ALLOWED_TAGS, ['tbody']);
642 + delete FORBID_TAGS.tbody;
643 + }
644 + if (cfg.TRUSTED_TYPES_POLICY) {
645 + if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
646 + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
647 + }
648 + if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
649 + throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
650 + }
651 + // Overwrite existing TrustedTypes policy.
652 + trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;
653 + // Sign local variables required by `sanitize`.
654 + emptyHTML = trustedTypesPolicy.createHTML('');
655 + } else {
656 + // Uninitialized policy, attempt to initialize the internal dompurify policy.
657 + if (trustedTypesPolicy === undefined) {
658 + trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
659 + }
660 + // If creating the internal policy succeeded sign internal variables.
661 + if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {
662 + emptyHTML = trustedTypesPolicy.createHTML('');
663 + }
664 + }
665 + // Prevent further manipulation of configuration.
666 + // Not available in IE8, Safari 5, etc.
667 + if (freeze) {
668 + freeze(cfg);
669 + }
670 + CONFIG = cfg;
671 + };
672 + /* Keep track of all possible SVG and MathML tags
673 + * so that we can perform the namespace checks
674 + * correctly. */
675 + const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]);
676 + const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]);
677 /**
162 - * This method automatically checks if the prop is function or getter and behaves accordingly.
163 - *
164 - * @param {Object} object - The object to look up the getter function in its prototype chain.
165 - * @param {String} prop - The property name for which to find the getter function.
166 - * @returns {Function} The getter function found in the prototype chain or a fallback function.
678 + * @param element a DOM element whose namespace is being checked
679 + * @returns Return false if the element has a
680 + * namespace that a spec-compliant parser would never
681 + * return. Return true otherwise.
682 */
168 - function lookupGetter(object, prop) {
169 - while (object !== null) {
170 - const desc = getOwnPropertyDescriptor(object, prop);
171 - if (desc) {
172 - if (desc.get) {
173 - return unapply(desc.get);
174 - }
175 - if (typeof desc.value === 'function') {
176 - return unapply(desc.value);
177 - }
683 + const _checkValidNamespace = function _checkValidNamespace(element) {
684 + let parent = getParentNode(element);
685 + // In JSDOM, if we're inside shadow DOM, then parentNode
686 + // can be null. We just simulate parent in this case.
687 + if (!parent || !parent.tagName) {
688 + parent = {
689 + namespaceURI: NAMESPACE,
690 + tagName: 'template'
691 + };
692 + }
693 + const tagName = stringToLowerCase(element.tagName);
694 + const parentTagName = stringToLowerCase(parent.tagName);
695 + if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
696 + return false;
697 + }
698 + if (element.namespaceURI === SVG_NAMESPACE) {
699 + // The only way to switch from HTML namespace to SVG
700 + // is via <svg>. If it happens via any other tag, then
701 + // it should be killed.
702 + if (parent.namespaceURI === HTML_NAMESPACE) {
703 + return tagName === 'svg';
704 + }
705 + // The only way to switch from MathML to SVG is via`
706 + // svg if parent is either <annotation-xml> or MathML
707 + // text integration points.
708 + if (parent.namespaceURI === MATHML_NAMESPACE) {
709 + return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
710 + }
711 + // We only allow elements that are defined in SVG
712 + // spec. All others are disallowed in SVG namespace.
713 + return Boolean(ALL_SVG_TAGS[tagName]);
714 + }
715 + if (element.namespaceURI === MATHML_NAMESPACE) {
716 + // The only way to switch from HTML namespace to MathML
717 + // is via <math>. If it happens via any other tag, then
718 + // it should be killed.
719 + if (parent.namespaceURI === HTML_NAMESPACE) {
720 + return tagName === 'math';
721 + }
722 + // The only way to switch from SVG to MathML is via
723 + // <math> and HTML integration points
724 + if (parent.namespaceURI === SVG_NAMESPACE) {
725 + return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
726 + }
727 + // We only allow elements that are defined in MathML
728 + // spec. All others are disallowed in MathML namespace.
729 + return Boolean(ALL_MATHML_TAGS[tagName]);
730 + }
731 + if (element.namespaceURI === HTML_NAMESPACE) {
732 + // The only way to switch from SVG to HTML is via
733 + // HTML integration points, and from MathML to HTML
734 + // is via MathML text integration points
735 + if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
736 + return false;
737 + }
738 + if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
739 + return false;
740 }
179 - object = getPrototypeOf(object);
741 + // We disallow tags that are specific for MathML
742 + // or SVG and should never appear in HTML namespace
743 + return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
744 }
181 - function fallbackValue() {
182 - return null;
745 + // For XHTML and XML documents that support custom namespaces
746 + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
747 + return true;
748 }
184 - return fallbackValue;
185 - }
186 -
187 - 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']);
188 -
189 - // SVG
190 - 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']);
191 - 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']);
192 -
193 - // List of SVG elements that are disallowed by default.
194 - // We still need to know them so that we can do namespace
195 - // checks properly in case one wants to add them to
196 - // allow-list.
197 - 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']);
198 - 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']);
199 -
200 - // Similarly to SVG, we want to know all MathML elements,
201 - // even those that we disallow by default.
202 - const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
203 - const text = freeze(['#text']);
204 -
205 - 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']);
206 - 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']);
207 - 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']);
208 - const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
209 -
210 - // eslint-disable-next-line unicorn/better-regex
211 - const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
212 - const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm);
213 - const TMPLIT_EXPR = seal(/\${[\w\W]*}/gm);
214 - const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]/); // eslint-disable-line no-useless-escape
215 - const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
216 - const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
217 - );
218 - const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
219 - const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
220 - );
221 - const DOCTYPE_NAME = seal(/^html$/i);
222 - const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i);
223 -
224 - var EXPRESSIONS = /*#__PURE__*/Object.freeze({
225 - __proto__: null,
226 - MUSTACHE_EXPR: MUSTACHE_EXPR,
227 - ERB_EXPR: ERB_EXPR,
228 - TMPLIT_EXPR: TMPLIT_EXPR,
229 - DATA_ATTR: DATA_ATTR,
230 - ARIA_ATTR: ARIA_ATTR,
231 - IS_ALLOWED_URI: IS_ALLOWED_URI,
232 - IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,
233 - ATTR_WHITESPACE: ATTR_WHITESPACE,
234 - DOCTYPE_NAME: DOCTYPE_NAME,
235 - CUSTOM_ELEMENT: CUSTOM_ELEMENT
236 - });
237 -
238 - // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
239 - const NODE_TYPE = {
240 - element: 1,
241 - attribute: 2,
242 - text: 3,
243 - cdataSection: 4,
244 - entityReference: 5,
245 - // Deprecated
246 - entityNode: 6,
247 - // Deprecated
248 - progressingInstruction: 7,
249 - comment: 8,
250 - document: 9,
251 - documentType: 10,
252 - documentFragment: 11,
253 - notation: 12 // Deprecated
749 + // The code should never reach this place (this means
750 + // that the element somehow got namespace that is not
751 + // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
752 + // Return false just in case.
753 + return false;
754 };
255 - const getGlobal = function getGlobal() {
256 - return typeof window === 'undefined' ? null : window;
755 + /**
756 + * _forceRemove
757 + *
758 + * @param node a DOM node
759 + */
760 + const _forceRemove = function _forceRemove(node) {
761 + arrayPush(DOMPurify.removed, {
762 + element: node
763 + });
764 + try {
765 + // eslint-disable-next-line unicorn/prefer-dom-node-remove
766 + getParentNode(node).removeChild(node);
767 + } catch (_) {
768 + remove(node);
769 + }
770 };
258 -
771 /**
260 - * Creates a no-op policy for internal use only.
261 - * Don't export this function outside this module!
262 - * @param {TrustedTypePolicyFactory} trustedTypes The policy factory.
263 - * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
264 - * @return {TrustedTypePolicy} The policy created (or null, if Trusted Types
265 - * are not supported or creating the policy failed).
772 + * _removeAttribute
773 + *
774 + * @param name an Attribute name
775 + * @param element a DOM node
776 */
267 - const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
268 - if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
269 - return null;
270 - }
271 -
272 - // Allow the callers to control the unique policy name
273 - // by adding a data-tt-policy-suffix to the script element with the DOMPurify.
274 - // Policy creation with duplicate names throws in Trusted Types.
275 - let suffix = null;
276 - const ATTR_NAME = 'data-tt-policy-suffix';
277 - if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
278 - suffix = purifyHostElement.getAttribute(ATTR_NAME);
279 - }
280 - const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
777 + const _removeAttribute = function _removeAttribute(name, element) {
778 try {
282 - return trustedTypes.createPolicy(policyName, {
283 - createHTML(html) {
284 - return html;
285 - },
286 - createScriptURL(scriptUrl) {
287 - return scriptUrl;
288 - }
779 + arrayPush(DOMPurify.removed, {
780 + attribute: element.getAttributeNode(name),
781 + from: element
782 });
783 } catch (_) {
291 - // Policy creation failed (most likely another DOMPurify script has
292 - // already run). Skip creating the policy, as this will only cause errors
293 - // if TT are enforced.
294 - console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
295 - return null;
784 + arrayPush(DOMPurify.removed, {
785 + attribute: null,
786 + from: element
787 + });
788 }
297 - };
298 - function createDOMPurify() {
299 - let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
300 - const DOMPurify = root => createDOMPurify(root);
301 -
302 - /**
303 - * Version label, exposed for easier checks
304 - * if DOMPurify is up to date or not
305 - */
306 - DOMPurify.version = '3.1.6';
307 -
308 - /**
309 - * Array of elements that DOMPurify removed during sanitation.
310 - * Empty if nothing was removed.
311 - */
312 - DOMPurify.removed = [];
313 - if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) {
314 - // Not running in a browser, provide a factory function
315 - // so that you can pass your own Window
316 - DOMPurify.isSupported = false;
317 - return DOMPurify;
318 - }
319 - let {
320 - document
321 - } = window;
322 - const originalDocument = document;
323 - const currentScript = originalDocument.currentScript;
324 - const {
325 - DocumentFragment,
326 - HTMLTemplateElement,
327 - Node,
328 - Element,
329 - NodeFilter,
330 - NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,
331 - HTMLFormElement,
332 - DOMParser,
333 - trustedTypes
334 - } = window;
335 - const ElementPrototype = Element.prototype;
336 - const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
337 - const remove = lookupGetter(ElementPrototype, 'remove');
338 - const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
339 - const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
340 - const getParentNode = lookupGetter(ElementPrototype, 'parentNode');
341 -
342 - // As per issue #47, the web-components registry is inherited by a
343 - // new document created via createHTMLDocument. As per the spec
344 - // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
345 - // a new empty registry is used when creating a template contents owner
346 - // document, so we use that as our parent document to ensure nothing
347 - // is inherited.
348 - if (typeof HTMLTemplateElement === 'function') {
349 - const template = document.createElement('template');
350 - if (template.content && template.content.ownerDocument) {
351 - document = template.content.ownerDocument;
789 + element.removeAttribute(name);
790 + // We void attribute values for unremovable "is" attributes
791 + if (name === 'is') {
792 + if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
793 + try {
794 + _forceRemove(element);
795 + } catch (_) {}
796 + } else {
797 + try {
798 + element.setAttribute(name, '');
799 + } catch (_) {}
800 }
801 }
354 - let trustedTypesPolicy;
355 - let emptyHTML = '';
356 - const {
357 - implementation,
358 - createNodeIterator,
359 - createDocumentFragment,
360 - getElementsByTagName
361 - } = document;
362 - const {
363 - importNode
364 - } = originalDocument;
365 - let hooks = {};
366 -
367 - /**
368 - * Expose whether this browser supports running the full DOMPurify.
369 - */
370 - DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
371 - const {
372 - MUSTACHE_EXPR,
373 - ERB_EXPR,
374 - TMPLIT_EXPR,
375 - DATA_ATTR,
376 - ARIA_ATTR,
377 - IS_SCRIPT_OR_DATA,
378 - ATTR_WHITESPACE,
379 - CUSTOM_ELEMENT
380 - } = EXPRESSIONS;
381 - let {
382 - IS_ALLOWED_URI: IS_ALLOWED_URI$1
383 - } = EXPRESSIONS;
384 -
385 - /**
386 - * We consider the elements and attributes below to be safe. Ideally
387 - * don't add any new ones but feel free to remove unwanted ones.
388 - */
389 -
390 - /* allowed element names */
391 - let ALLOWED_TAGS = null;
392 - const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
393 -
394 - /* Allowed attribute names */
395 - let ALLOWED_ATTR = null;
396 - const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
397 -
802 + };
803 + /**
804 + * _initDocument
805 + *
806 + * @param dirty - a string of dirty markup
807 + * @return a DOM, filled with the dirty markup
808 + */
809 + const _initDocument = function _initDocument(dirty) {
810 + /* Create a HTML document */
811 + let doc = null;
812 + let leadingWhitespace = null;
813 + if (FORCE_BODY) {
814 + dirty = '<remove></remove>' + dirty;
815 + } else {
816 + /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
817 + const matches = stringMatch(dirty, /^[\r\n\t ]+/);
818 + leadingWhitespace = matches && matches[0];
819 + }
820 + if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
821 + // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
822 + dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
823 + }
824 + const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
825 /*
399 - * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.
400 - * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
401 - * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
402 - * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
403 - */
404 - let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, {
405 - tagNameCheck: {
406 - writable: true,
407 - configurable: false,
408 - enumerable: true,
409 - value: null
410 - },
411 - attributeNameCheck: {
412 - writable: true,
413 - configurable: false,
414 - enumerable: true,
415 - value: null
416 - },
417 - allowCustomizedBuiltInElements: {
418 - writable: true,
419 - configurable: false,
420 - enumerable: true,
421 - value: false
422 - }
423 - }));
424 -
425 - /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
426 - let FORBID_TAGS = null;
427 -
428 - /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
429 - let FORBID_ATTR = null;
430 -
431 - /* Decide if ARIA attributes are okay */
432 - let ALLOW_ARIA_ATTR = true;
433 -
434 - /* Decide if custom data attributes are okay */
435 - let ALLOW_DATA_ATTR = true;
436 -
437 - /* Decide if unknown protocols are okay */
438 - let ALLOW_UNKNOWN_PROTOCOLS = false;
439 -
440 - /* Decide if self-closing tags in attributes are allowed.
441 - * Usually removed due to a mXSS issue in jQuery 3.0 */
442 - let ALLOW_SELF_CLOSE_IN_ATTR = true;
443 -
444 - /* Output should be safe for common template engines.
445 - * This means, DOMPurify removes data attributes, mustaches and ERB
446 - */
447 - let SAFE_FOR_TEMPLATES = false;
448 -
449 - /* Output should be safe even for XML used within HTML and alike.
450 - * This means, DOMPurify removes comments when containing risky content.
451 - */
452 - let SAFE_FOR_XML = true;
453 -
454 - /* Decide if document with <html>... should be returned */
455 - let WHOLE_DOCUMENT = false;
456 -
457 - /* Track whether config is already set on this instance of DOMPurify. */
458 - let SET_CONFIG = false;
459 -
460 - /* Decide if all elements (e.g. style, script) must be children of
461 - * document.body. By default, browsers might move them to document.head */
462 - let FORCE_BODY = false;
463 -
464 - /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
465 - * string (or a TrustedHTML object if Trusted Types are supported).
466 - * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
467 - */
468 - let RETURN_DOM = false;
469 -
470 - /* Decide if a DOM `DocumentFragment` should be returned, instead of a html
471 - * string (or a TrustedHTML object if Trusted Types are supported) */
472 - let RETURN_DOM_FRAGMENT = false;
473 -
474 - /* Try to return a Trusted Type object instead of a string, return a string in
475 - * case Trusted Types are not supported */
476 - let RETURN_TRUSTED_TYPE = false;
477 -
478 - /* Output should be free from DOM clobbering attacks?
479 - * This sanitizes markups named with colliding, clobberable built-in DOM APIs.
480 - */
481 - let SANITIZE_DOM = true;
482 -
483 - /* Achieve full DOM Clobbering protection by isolating the namespace of named
484 - * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
485 - *
486 - * HTML/DOM spec rules that enable DOM Clobbering:
487 - * - Named Access on Window (§7.3.3)
488 - * - DOM Tree Accessors (§3.1.5)
489 - * - Form Element Parent-Child Relations (§4.10.3)
490 - * - Iframe srcdoc / Nested WindowProxies (§4.8.5)
491 - * - HTMLCollection (§4.2.10.2)
492 - *
493 - * Namespace isolation is implemented by prefixing `id` and `name` attributes
494 - * with a constant string, i.e., `user-content-`
495 - */
496 - let SANITIZE_NAMED_PROPS = false;
497 - const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
498 -
499 - /* Keep element content when removing element? */
500 - let KEEP_CONTENT = true;
501 -
502 - /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
503 - * of importing it into a new Document and returning a sanitized copy */
504 - let IN_PLACE = false;
505 -
506 - /* Allow usage of profiles like html, svg and mathMl */
507 - let USE_PROFILES = {};
508 -
509 - /* Tags to ignore content of when KEEP_CONTENT is true */
510 - let FORBID_CONTENTS = null;
511 - 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']);
512 -
513 - /* Tags that are safe for data: URIs */
514 - let DATA_URI_TAGS = null;
515 - const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
516 -
517 - /* Attributes safe for values like "javascript:" */
518 - let URI_SAFE_ATTRIBUTES = null;
519 - const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
520 - const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
521 - const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
522 - const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
523 - /* Document namespace */
524 - let NAMESPACE = HTML_NAMESPACE;
525 - let IS_EMPTY_INPUT = false;
526 -
527 - /* Allowed XHTML+XML namespaces */
528 - let ALLOWED_NAMESPACES = null;
529 - const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
530 -
531 - /* Parsing of strict XHTML documents */
532 - let PARSER_MEDIA_TYPE = null;
533 - const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
534 - const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
535 - let transformCaseFunc = null;
536 -
537 - /* Keep a reference to config to pass to hooks */
538 - let CONFIG = null;
539 -
540 - /* Ideally, do not touch anything below this line */
541 - /* ______________________________________________ */
542 -
543 - const formElement = document.createElement('form');
544 - const isRegexOrFunction = function isRegexOrFunction(testValue) {
545 - return testValue instanceof RegExp || testValue instanceof Function;
546 - };
547 -
548 - /**
549 - * _parseConfig
550 - *
551 - * @param {Object} cfg optional config literal
552 - */
553 - // eslint-disable-next-line complexity
554 - const _parseConfig = function _parseConfig() {
555 - let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
556 - if (CONFIG && CONFIG === cfg) {
557 - return;
558 - }
559 -
560 - /* Shield configuration object from tampering */
561 - if (!cfg || typeof cfg !== 'object') {
562 - cfg = {};
563 - }
564 -
565 - /* Shield configuration object from prototype pollution */
566 - cfg = clone(cfg);
567 - PARSER_MEDIA_TYPE =
568 - // eslint-disable-next-line unicorn/prefer-includes
569 - SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE;
570 -
571 - // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
572 - transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;
573 -
574 - /* Set configuration parameters */
575 - ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;
576 - ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;
577 - ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;
578 - URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES),
579 - // eslint-disable-line indent
580 - cfg.ADD_URI_SAFE_ATTR,
581 - // eslint-disable-line indent
582 - transformCaseFunc // eslint-disable-line indent
583 - ) // eslint-disable-line indent
584 - : DEFAULT_URI_SAFE_ATTRIBUTES;
585 - DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS),
586 - // eslint-disable-line indent
587 - cfg.ADD_DATA_URI_TAGS,
588 - // eslint-disable-line indent
589 - transformCaseFunc // eslint-disable-line indent
590 - ) // eslint-disable-line indent
591 - : DEFAULT_DATA_URI_TAGS;
592 - FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;
593 - FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {};
594 - FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {};
595 - USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES : false;
596 - ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
597 - ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
598 - ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
599 - ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
600 - SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
601 - SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true
602 - WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
603 - RETURN_DOM = cfg.RETURN_DOM || false; // Default false
604 - RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
605 - RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
606 - FORCE_BODY = cfg.FORCE_BODY || false; // Default false
607 - SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
608 - SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
609 - KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
610 - IN_PLACE = cfg.IN_PLACE || false; // Default false
611 - IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;
612 - NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;
613 - CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};
614 - if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {
615 - CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;
616 - }
617 - if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {
618 - CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;
619 - }
620 - if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {
621 - CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;
622 - }
623 - if (SAFE_FOR_TEMPLATES) {
624 - ALLOW_DATA_ATTR = false;
625 - }
626 - if (RETURN_DOM_FRAGMENT) {
627 - RETURN_DOM = true;
628 - }
629 -
630 - /* Parse profile info */
631 - if (USE_PROFILES) {
632 - ALLOWED_TAGS = addToSet({}, text);
633 - ALLOWED_ATTR = [];
634 - if (USE_PROFILES.html === true) {
635 - addToSet(ALLOWED_TAGS, html$1);
636 - addToSet(ALLOWED_ATTR, html);
637 - }
638 - if (USE_PROFILES.svg === true) {
639 - addToSet(ALLOWED_TAGS, svg$1);
640 - addToSet(ALLOWED_ATTR, svg);
641 - addToSet(ALLOWED_ATTR, xml);
642 - }
643 - if (USE_PROFILES.svgFilters === true) {
644 - addToSet(ALLOWED_TAGS, svgFilters);
645 - addToSet(ALLOWED_ATTR, svg);
646 - addToSet(ALLOWED_ATTR, xml);
647 - }
648 - if (USE_PROFILES.mathMl === true) {
649 - addToSet(ALLOWED_TAGS, mathMl$1);
650 - addToSet(ALLOWED_ATTR, mathMl);
651 - addToSet(ALLOWED_ATTR, xml);
652 - }
653 - }
654 -
655 - /* Merge configuration parameters */
656 - if (cfg.ADD_TAGS) {
657 - if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
658 - ALLOWED_TAGS = clone(ALLOWED_TAGS);
659 - }
660 - addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
661 - }
662 - if (cfg.ADD_ATTR) {
663 - if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
664 - ALLOWED_ATTR = clone(ALLOWED_ATTR);
665 - }
666 - addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
667 - }
668 - if (cfg.ADD_URI_SAFE_ATTR) {
669 - addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
670 - }
671 - if (cfg.FORBID_CONTENTS) {
672 - if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
673 - FORBID_CONTENTS = clone(FORBID_CONTENTS);
674 - }
675 - addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
676 - }
677 -
678 - /* Add #text in case KEEP_CONTENT is set to true */
679 - if (KEEP_CONTENT) {
680 - ALLOWED_TAGS['#text'] = true;
681 - }
682 -
683 - /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
684 - if (WHOLE_DOCUMENT) {
685 - addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
686 - }
687 -
688 - /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
689 - if (ALLOWED_TAGS.table) {
690 - addToSet(ALLOWED_TAGS, ['tbody']);
691 - delete FORBID_TAGS.tbody;
692 - }
693 - if (cfg.TRUSTED_TYPES_POLICY) {
694 - if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
695 - throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
696 - }
697 - if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
698 - throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
699 - }
700 -
701 - // Overwrite existing TrustedTypes policy.
702 - trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY;
703 -
704 - // Sign local variables required by `sanitize`.
705 - emptyHTML = trustedTypesPolicy.createHTML('');
706 - } else {
707 - // Uninitialized policy, attempt to initialize the internal dompurify policy.
708 - if (trustedTypesPolicy === undefined) {
709 - trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
710 - }
711 -
712 - // If creating the internal policy succeeded sign internal variables.
713 - if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {
714 - emptyHTML = trustedTypesPolicy.createHTML('');
715 - }
716 - }
717 -
718 - // Prevent further manipulation of configuration.
719 - // Not available in IE8, Safari 5, etc.
720 - if (freeze) {
721 - freeze(cfg);
722 - }
723 - CONFIG = cfg;
724 - };
725 - const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);
726 - const HTML_INTEGRATION_POINTS = addToSet({}, ['foreignobject', 'annotation-xml']);
727 -
728 - // Certain elements are allowed in both SVG and HTML
729 - // namespace. We need to specify them explicitly
730 - // so that they don't get erroneously deleted from
731 - // HTML namespace.
732 - const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
733 -
734 - /* Keep track of all possible SVG and MathML tags
735 - * so that we can perform the namespace checks
736 - * correctly. */
737 - const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]);
738 - const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]);
739 -
740 - /**
741 - * @param {Element} element a DOM element whose namespace is being checked
742 - * @returns {boolean} Return false if the element has a
743 - * namespace that a spec-compliant parser would never
744 - * return. Return true otherwise.
826 + * Use the DOMParser API by default, fallback later if needs be
827 + * DOMParser not work for svg when has multiple root element.
828 */
746 - const _checkValidNamespace = function _checkValidNamespace(element) {
747 - let parent = getParentNode(element);
748 -
749 - // In JSDOM, if we're inside shadow DOM, then parentNode
750 - // can be null. We just simulate parent in this case.
751 - if (!parent || !parent.tagName) {
752 - parent = {
753 - namespaceURI: NAMESPACE,
754 - tagName: 'template'
755 - };
756 - }
757 - const tagName = stringToLowerCase(element.tagName);
758 - const parentTagName = stringToLowerCase(parent.tagName);
759 - if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
760 - return false;
761 - }
762 - if (element.namespaceURI === SVG_NAMESPACE) {
763 - // The only way to switch from HTML namespace to SVG
764 - // is via <svg>. If it happens via any other tag, then
765 - // it should be killed.
766 - if (parent.namespaceURI === HTML_NAMESPACE) {
767 - return tagName === 'svg';
768 - }
769 -
770 - // The only way to switch from MathML to SVG is via`
771 - // svg if parent is either <annotation-xml> or MathML
772 - // text integration points.
773 - if (parent.namespaceURI === MATHML_NAMESPACE) {
774 - return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
775 - }
776 -
777 - // We only allow elements that are defined in SVG
778 - // spec. All others are disallowed in SVG namespace.
779 - return Boolean(ALL_SVG_TAGS[tagName]);
780 - }
781 - if (element.namespaceURI === MATHML_NAMESPACE) {
782 - // The only way to switch from HTML namespace to MathML
783 - // is via <math>. If it happens via any other tag, then
784 - // it should be killed.
785 - if (parent.namespaceURI === HTML_NAMESPACE) {
786 - return tagName === 'math';
787 - }
788 -
789 - // The only way to switch from SVG to MathML is via
790 - // <math> and HTML integration points
791 - if (parent.namespaceURI === SVG_NAMESPACE) {
792 - return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
793 - }
794 -
795 - // We only allow elements that are defined in MathML
796 - // spec. All others are disallowed in MathML namespace.
797 - return Boolean(ALL_MATHML_TAGS[tagName]);
829 + if (NAMESPACE === HTML_NAMESPACE) {
830 + try {
831 + doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
832 + } catch (_) {}
833 + }
834 + /* Use createHTMLDocument in case DOMParser is not available */
835 + if (!doc || !doc.documentElement) {
836 + doc = implementation.createDocument(NAMESPACE, 'template', null);
837 + try {
838 + doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;
839 + } catch (_) {
840 + // Syntax error if dirtyPayload is invalid xml
841 }
799 - if (element.namespaceURI === HTML_NAMESPACE) {
800 - // The only way to switch from SVG to HTML is via
801 - // HTML integration points, and from MathML to HTML
802 - // is via MathML text integration points
803 - if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
842 + }
843 + const body = doc.body || doc.documentElement;
844 + if (dirty && leadingWhitespace) {
845 + body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
846 + }
847 + /* Work on whole document or just its body */
848 + if (NAMESPACE === HTML_NAMESPACE) {
849 + return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
850 + }
851 + return WHOLE_DOCUMENT ? doc.documentElement : body;
852 + };
853 + /**
854 + * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.
855 + *
856 + * @param root The root element or node to start traversing on.
857 + * @return The created NodeIterator
858 + */
859 + const _createNodeIterator = function _createNodeIterator(root) {
860 + return createNodeIterator.call(root.ownerDocument || root, root,
861 + // eslint-disable-next-line no-bitwise
862 + NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null);
863 + };
864 + /**
865 + * _isClobbered
866 + *
867 + * @param element element to check for clobbering attacks
868 + * @return true if clobbered, false if safe
869 + */
870 + const _isClobbered = function _isClobbered(element) {
871 + 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');
872 + };
873 + /**
874 + * Checks whether the given object is a DOM node.
875 + *
876 + * @param value object to check whether it's a DOM node
877 + * @return true is object is a DOM node
878 + */
879 + const _isNode = function _isNode(value) {
880 + return typeof Node === 'function' && value instanceof Node;
881 + };
882 + function _executeHooks(hooks, currentNode, data) {
883 + arrayForEach(hooks, hook => {
884 + hook.call(DOMPurify, currentNode, data, CONFIG);
885 + });
886 + }
887 + /**
888 + * _sanitizeElements
889 + *
890 + * @protect nodeName
891 + * @protect textContent
892 + * @protect removeChild
893 + * @param currentNode to check for permission to exist
894 + * @return true if node was killed, false if left alive
895 + */
896 + const _sanitizeElements = function _sanitizeElements(currentNode) {
897 + let content = null;
898 + /* Execute a hook if present */
899 + _executeHooks(hooks.beforeSanitizeElements, currentNode, null);
900 + /* Check if element is clobbered or can clobber */
901 + if (_isClobbered(currentNode)) {
902 + _forceRemove(currentNode);
903 + return true;
904 + }
905 + /* Now let's check the element's type and name */
906 + const tagName = transformCaseFunc(currentNode.nodeName);
907 + /* Execute a hook if present */
908 + _executeHooks(hooks.uponSanitizeElement, currentNode, {
909 + tagName,
910 + allowedTags: ALLOWED_TAGS
911 + });
912 + /* Detect mXSS attempts abusing namespace confusion */
913 + if (SAFE_FOR_XML && currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w!]/g, currentNode.innerHTML) && regExpTest(/<[/\w!]/g, currentNode.textContent)) {
914 + _forceRemove(currentNode);
915 + return true;
916 + }
917 + /* Remove any occurrence of processing instructions */
918 + if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {
919 + _forceRemove(currentNode);
920 + return true;
921 + }
922 + /* Remove any kind of possibly harmful comments */
923 + if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) {
924 + _forceRemove(currentNode);
925 + return true;
926 + }
927 + /* Remove element if anything forbids its presence */
928 + if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
929 + /* Check if we have a custom element to handle */
930 + if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {
931 + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) {
932 return false;
933 }
806 - if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
934 + if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) {
935 return false;
936 }
809 -
810 - // We disallow tags that are specific for MathML
811 - // or SVG and should never appear in HTML namespace
812 - return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
937 }
814 -
815 - // For XHTML and XML documents that support custom namespaces
816 - if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
817 - return true;
938 + /* Keep content except for bad-listed elements */
939 + if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {
940 + const parentNode = getParentNode(currentNode) || currentNode.parentNode;
941 + const childNodes = getChildNodes(currentNode) || currentNode.childNodes;
942 + if (childNodes && parentNode) {
943 + const childCount = childNodes.length;
944 + for (let i = childCount - 1; i >= 0; --i) {
945 + const childClone = cloneNode(childNodes[i], true);
946 + childClone.__removalCount = (currentNode.__removalCount || 0) + 1;
947 + parentNode.insertBefore(childClone, getNextSibling(currentNode));
948 + }
949 + }
950 }
819 -
820 - // The code should never reach this place (this means
821 - // that the element somehow got namespace that is not
822 - // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
823 - // Return false just in case.
824 - return false;
825 - };
826 -
827 - /**
828 - * _forceRemove
829 - *
830 - * @param {Node} node a DOM node
831 - */
832 - const _forceRemove = function _forceRemove(node) {
833 - arrayPush(DOMPurify.removed, {
834 - element: node
951 + _forceRemove(currentNode);
952 + return true;
953 + }
954 + /* Check whether element has a valid namespace */
955 + if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {
956 + _forceRemove(currentNode);
957 + return true;
958 + }
959 + /* Make sure that older browsers don't get fallback-tag mXSS */
960 + if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) {
961 + _forceRemove(currentNode);
962 + return true;
963 + }
964 + /* Sanitize element content to be template-safe */
965 + if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {
966 + /* Get the element's text content */
967 + content = currentNode.textContent;
968 + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
969 + content = stringReplace(content, expr, ' ');
970 });
836 - try {
837 - // eslint-disable-next-line unicorn/prefer-dom-node-remove
838 - getParentNode(node).removeChild(node);
839 - } catch (_) {
840 - remove(node);
841 - }
842 - };
843 -
844 - /**
845 - * _removeAttribute
846 - *
847 - * @param {String} name an Attribute name
848 - * @param {Node} node a DOM node
849 - */
850 - const _removeAttribute = function _removeAttribute(name, node) {
851 - try {
971 + if (currentNode.textContent !== content) {
972 arrayPush(DOMPurify.removed, {
853 - attribute: node.getAttributeNode(name),
854 - from: node
973 + element: currentNode.cloneNode()
974 });
856 - } catch (_) {
857 - arrayPush(DOMPurify.removed, {
858 - attribute: null,
859 - from: node
860 - });
861 - }
862 - node.removeAttribute(name);
863 -
864 - // We void attribute values for unremovable "is"" attributes
865 - if (name === 'is' && !ALLOWED_ATTR[name]) {
866 - if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
867 - try {
868 - _forceRemove(node);
869 - } catch (_) {}
870 - } else {
871 - try {
872 - node.setAttribute(name, '');
873 - } catch (_) {}
874 - }
875 - }
876 - };
877 -
878 - /**
879 - * _initDocument
880 - *
881 - * @param {String} dirty a string of dirty markup
882 - * @return {Document} a DOM, filled with the dirty markup
883 - */
884 - const _initDocument = function _initDocument(dirty) {
885 - /* Create a HTML document */
886 - let doc = null;
887 - let leadingWhitespace = null;
888 - if (FORCE_BODY) {
889 - dirty = '<remove></remove>' + dirty;
890 - } else {
891 - /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
892 - const matches = stringMatch(dirty, /^[\r\n\t ]+/);
893 - leadingWhitespace = matches && matches[0];
894 - }
895 - if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
896 - // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
897 - dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
975 + currentNode.textContent = content;
976 }
899 - const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
900 - /*
901 - * Use the DOMParser API by default, fallback later if needs be
902 - * DOMParser not work for svg when has multiple root element.
903 - */
904 - if (NAMESPACE === HTML_NAMESPACE) {
905 - try {
906 - doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
907 - } catch (_) {}
908 - }
909 -
910 - /* Use createHTMLDocument in case DOMParser is not available */
911 - if (!doc || !doc.documentElement) {
912 - doc = implementation.createDocument(NAMESPACE, 'template', null);
913 - try {
914 - doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;
915 - } catch (_) {
916 - // Syntax error if dirtyPayload is invalid xml
917 - }
918 - }
919 - const body = doc.body || doc.documentElement;
920 - if (dirty && leadingWhitespace) {
921 - body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
922 - }
923 -
924 - /* Work on whole document or just its body */
925 - if (NAMESPACE === HTML_NAMESPACE) {
926 - return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
927 - }
928 - return WHOLE_DOCUMENT ? doc.documentElement : body;
929 - };
930 -
931 - /**
932 - * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document.
933 - *
934 - * @param {Node} root The root element or node to start traversing on.
935 - * @return {NodeIterator} The created NodeIterator
936 - */
937 - const _createNodeIterator = function _createNodeIterator(root) {
938 - return createNodeIterator.call(root.ownerDocument || root, root,
939 - // eslint-disable-next-line no-bitwise
940 - NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null);
941 - };
942 -
943 - /**
944 - * _isClobbered
945 - *
946 - * @param {Node} elm element to check for clobbering attacks
947 - * @return {Boolean} true if clobbered, false if safe
948 - */
949 - const _isClobbered = function _isClobbered(elm) {
950 - 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');
951 - };
952 -
953 - /**
954 - * Checks whether the given object is a DOM node.
955 - *
956 - * @param {Node} object object to check whether it's a DOM node
957 - * @return {Boolean} true is object is a DOM node
958 - */
959 - const _isNode = function _isNode(object) {
960 - return typeof Node === 'function' && object instanceof Node;
961 - };
962 -
963 - /**
964 - * _executeHook
965 - * Execute user configurable hooks
966 - *
967 - * @param {String} entryPoint Name of the hook's entry point
968 - * @param {Node} currentNode node to work on with the hook
969 - * @param {Object} data additional hook parameters
970 - */
971 - const _executeHook = function _executeHook(entryPoint, currentNode, data) {
972 - if (!hooks[entryPoint]) {
973 - return;
977 + }
978 + /* Execute a hook if present */
979 + _executeHooks(hooks.afterSanitizeElements, currentNode, null);
980 + return false;
981 + };
982 + /**
983 + * _isValidAttribute
984 + *
985 + * @param lcTag Lowercase tag name of containing element.
986 + * @param lcName Lowercase attribute name.
987 + * @param value Attribute value.
988 + * @return Returns true if `value` is valid, otherwise false.
989 + */
990 + // eslint-disable-next-line complexity
991 + const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
992 + /* Make sure attribute cannot clobber */
993 + if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
994 + return false;
995 + }
996 + /* Allow valid data-* attributes: At least one character after "-"
997 + (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
998 + XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
999 + We don't need to check the value; it's always URI safe. */
1000 + 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]) {
1001 + if (
1002 + // First condition does a very basic check if a) it's basically a valid custom element tagname AND
1003 + // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
1004 + // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck
1005 + _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)) ||
1006 + // Alternative, second condition checks if it's an `is`-attribute, AND
1007 + // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
1008 + 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 {
1009 + return false;
1010 }
975 - arrayForEach(hooks[entryPoint], hook => {
976 - hook.call(DOMPurify, currentNode, data, CONFIG);
977 - });
1011 + /* Check value is safe. First, is attr inert? If so, is safe */
1012 + } 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) {
1013 + return false;
1014 + } else ;
1015 + return true;
1016 + };
1017 + /**
1018 + * _isBasicCustomElement
1019 + * checks if at least one dash is included in tagName, and it's not the first char
1020 + * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name
1021 + *
1022 + * @param tagName name of the tag of the node to sanitize
1023 + * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false.
1024 + */
1025 + const _isBasicCustomElement = function _isBasicCustomElement(tagName) {
1026 + return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);
1027 + };
1028 + /**
1029 + * _sanitizeAttributes
1030 + *
1031 + * @protect attributes
1032 + * @protect nodeName
1033 + * @protect removeAttribute
1034 + * @protect setAttribute
1035 + *
1036 + * @param currentNode to sanitize
1037 + */
1038 + const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
1039 + /* Execute a hook if present */
1040 + _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null);
1041 + const {
1042 + attributes
1043 + } = currentNode;
1044 + /* Check if we have attributes; if not we might have a text node */
1045 + if (!attributes || _isClobbered(currentNode)) {
1046 + return;
1047 + }
1048 + const hookEvent = {
1049 + attrName: '',
1050 + attrValue: '',
1051 + keepAttr: true,
1052 + allowedAttributes: ALLOWED_ATTR,
1053 + forceKeepAttr: undefined
1054 };
979 -
980 - /**
981 - * _sanitizeElements
982 - *
983 - * @protect nodeName
984 - * @protect textContent
985 - * @protect removeChild
986 - *
987 - * @param {Node} currentNode to check for permission to exist
988 - * @return {Boolean} true if node was killed, false if left alive
989 - */
990 - const _sanitizeElements = function _sanitizeElements(currentNode) {
991 - let content = null;
992 -
993 - /* Execute a hook if present */
994 - _executeHook('beforeSanitizeElements', currentNode, null);
995 -
996 - /* Check if element is clobbered or can clobber */
997 - if (_isClobbered(currentNode)) {
998 - _forceRemove(currentNode);
999 - return true;
1000 - }
1001 -
1002 - /* Now let's check the element's type and name */
1003 - const tagName = transformCaseFunc(currentNode.nodeName);
1004 -
1055 + let l = attributes.length;
1056 + /* Go backwards over all attributes; safely remove bad ones */
1057 + while (l--) {
1058 + const attr = attributes[l];
1059 + const {
1060 + name,
1061 + namespaceURI,
1062 + value: attrValue
1063 + } = attr;
1064 + const lcName = transformCaseFunc(name);
1065 + const initValue = attrValue;
1066 + let value = name === 'value' ? initValue : stringTrim(initValue);
1067 /* Execute a hook if present */
1006 - _executeHook('uponSanitizeElement', currentNode, {
1007 - tagName,
1008 - allowedTags: ALLOWED_TAGS
1009 - });
1010 -
1011 - /* Detect mXSS attempts abusing namespace confusion */
1012 - if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) {
1013 - _forceRemove(currentNode);
1014 - return true;
1015 - }
1016 -
1017 - /* Remove any occurrence of processing instructions */
1018 - if (currentNode.nodeType === NODE_TYPE.progressingInstruction) {
1019 - _forceRemove(currentNode);
1020 - return true;
1068 + hookEvent.attrName = lcName;
1069 + hookEvent.attrValue = value;
1070 + hookEvent.keepAttr = true;
1071 + hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set
1072 + _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent);
1073 + value = hookEvent.attrValue;
1074 + /* Full DOM Clobbering protection via namespace isolation,
1075 + * Prefix id and name attributes with `user-content-`
1076 + */
1077 + if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {
1078 + // Remove the attribute with this value
1079 + _removeAttribute(name, currentNode);
1080 + // Prefix the value and later re-create the attribute with the sanitized value
1081 + value = SANITIZE_NAMED_PROPS_PREFIX + value;
1082 }
1022 -
1023 - /* Remove any kind of possibly harmful comments */
1024 - if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) {
1025 - _forceRemove(currentNode);
1026 - return true;
1083 + /* Work around a security issue with comments inside attributes */
1084 + if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) {
1085 + _removeAttribute(name, currentNode);
1086 + continue;
1087 }
1028 -
1029 - /* Remove element if anything forbids its presence */
1030 - if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
1031 - /* Check if we have a custom element to handle */
1032 - if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) {
1033 - if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) {
1034 - return false;
1035 - }
1036 - if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) {
1037 - return false;
1038 - }
1039 - }
1040 -
1041 - /* Keep content except for bad-listed elements */
1042 - if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {
1043 - const parentNode = getParentNode(currentNode) || currentNode.parentNode;
1044 - const childNodes = getChildNodes(currentNode) || currentNode.childNodes;
1045 - if (childNodes && parentNode) {
1046 - const childCount = childNodes.length;
1047 - for (let i = childCount - 1; i >= 0; --i) {
1048 - const childClone = cloneNode(childNodes[i], true);
1049 - childClone.__removalCount = (currentNode.__removalCount || 0) + 1;
1050 - parentNode.insertBefore(childClone, getNextSibling(currentNode));
1051 - }
1052 - }
1053 - }
1054 - _forceRemove(currentNode);
1055 - return true;
1088 + /* Did the hooks approve of the attribute? */
1089 + if (hookEvent.forceKeepAttr) {
1090 + continue;
1091 }
1057 -
1058 - /* Check whether element has a valid namespace */
1059 - if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {
1060 - _forceRemove(currentNode);
1061 - return true;
1092 + /* Did the hooks approve of the attribute? */
1093 + if (!hookEvent.keepAttr) {
1094 + _removeAttribute(name, currentNode);
1095 + continue;
1096 }
1063 -
1064 - /* Make sure that older browsers don't get fallback-tag mXSS */
1065 - if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) {
1066 - _forceRemove(currentNode);
1067 - return true;
1097 + /* Work around a security issue in jQuery 3.0 */
1098 + if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) {
1099 + _removeAttribute(name, currentNode);
1100 + continue;
1101 }
1069 -
1070 - /* Sanitize element content to be template-safe */
1071 - if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) {
1072 - /* Get the element's text content */
1073 - content = currentNode.textContent;
1102 + /* Sanitize attribute content to be template-safe */
1103 + if (SAFE_FOR_TEMPLATES) {
1104 arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
1075 - content = stringReplace(content, expr, ' ');
1105 + value = stringReplace(value, expr, ' ');
1106 });
1077 - if (currentNode.textContent !== content) {
1078 - arrayPush(DOMPurify.removed, {
1079 - element: currentNode.cloneNode()
1080 - });
1081 - currentNode.textContent = content;
1082 - }
1107 }
1084 -
1085 - /* Execute a hook if present */
1086 - _executeHook('afterSanitizeElements', currentNode, null);
1087 - return false;
1088 - };
1089 -
1090 - /**
1091 - * _isValidAttribute
1092 - *
1093 - * @param {string} lcTag Lowercase tag name of containing element.
1094 - * @param {string} lcName Lowercase attribute name.
1095 - * @param {string} value Attribute value.
1096 - * @return {Boolean} Returns true if `value` is valid, otherwise false.
1097 - */
1098 - // eslint-disable-next-line complexity
1099 - const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
1100 - /* Make sure attribute cannot clobber */
1101 - if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
1102 - return false;
1103 - }
1104 -
1105 - /* Allow valid data-* attributes: At least one character after "-"
1106 - (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
1107 - XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
1108 - We don't need to check the value; it's always URI safe. */
1109 - 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]) {
1110 - if (
1111 - // First condition does a very basic check if a) it's basically a valid custom element tagname AND
1112 - // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
1113 - // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck
1114 - _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)) ||
1115 - // Alternative, second condition checks if it's an `is`-attribute, AND
1116 - // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
1117 - 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 {
1118 - return false;
1119 - }
1120 - /* Check value is safe. First, is attr inert? If so, is safe */
1121 - } 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) {
1122 - return false;
1123 - } else ;
1124 - return true;
1125 - };
1126 -
1127 - /**
1128 - * _isBasicCustomElement
1129 - * checks if at least one dash is included in tagName, and it's not the first char
1130 - * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name
1131 - *
1132 - * @param {string} tagName name of the tag of the node to sanitize
1133 - * @returns {boolean} Returns true if the tag name meets the basic criteria for a custom element, otherwise false.
1134 - */
1135 - const _isBasicCustomElement = function _isBasicCustomElement(tagName) {
1136 - return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT);
1137 - };
1138 -
1139 - /**
1140 - * _sanitizeAttributes
1141 - *
1142 - * @protect attributes
1143 - * @protect nodeName
1144 - * @protect removeAttribute
1145 - * @protect setAttribute
1146 - *
1147 - * @param {Node} currentNode to sanitize
1148 - */
1149 - const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
1150 - /* Execute a hook if present */
1151 - _executeHook('beforeSanitizeAttributes', currentNode, null);
1152 - const {
1153 - attributes
1154 - } = currentNode;
1155 -
1156 - /* Check if we have attributes; if not we might have a text node */
1157 - if (!attributes) {
1158 - return;
1159 - }
1160 - const hookEvent = {
1161 - attrName: '',
1162 - attrValue: '',
1163 - keepAttr: true,
1164 - allowedAttributes: ALLOWED_ATTR
1165 - };
1166 - let l = attributes.length;
1167 -
1168 - /* Go backwards over all attributes; safely remove bad ones */
1169 - while (l--) {
1170 - const attr = attributes[l];
1171 - const {
1172 - name,
1173 - namespaceURI,
1174 - value: attrValue
1175 - } = attr;
1176 - const lcName = transformCaseFunc(name);
1177 - let value = name === 'value' ? attrValue : stringTrim(attrValue);
1178 -
1179 - /* Execute a hook if present */
1180 - hookEvent.attrName = lcName;
1181 - hookEvent.attrValue = value;
1182 - hookEvent.keepAttr = true;
1183 - hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set
1184 - _executeHook('uponSanitizeAttribute', currentNode, hookEvent);
1185 - value = hookEvent.attrValue;
1186 -
1187 - /* Work around a security issue with comments inside attributes */
1188 - if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) {
1189 - _removeAttribute(name, currentNode);
1190 - continue;
1191 - }
1192 -
1193 - /* Did the hooks approve of the attribute? */
1194 - if (hookEvent.forceKeepAttr) {
1195 - continue;
1196 - }
1197 -
1198 - /* Remove attribute */
1108 + /* Is `value` valid for this attribute? */
1109 + const lcTag = transformCaseFunc(currentNode.nodeName);
1110 + if (!_isValidAttribute(lcTag, lcName, value)) {
1111 _removeAttribute(name, currentNode);
1200 -
1201 - /* Did the hooks approve of the attribute? */
1202 - if (!hookEvent.keepAttr) {
1203 - continue;
1204 - }
1205 -
1206 - /* Work around a security issue in jQuery 3.0 */
1207 - if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) {
1208 - _removeAttribute(name, currentNode);
1209 - continue;
1210 - }
1211 -
1212 - /* Sanitize attribute content to be template-safe */
1213 - if (SAFE_FOR_TEMPLATES) {
1214 - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
1215 - value = stringReplace(value, expr, ' ');
1216 - });
1217 - }
1218 -
1219 - /* Is `value` valid for this attribute? */
1220 - const lcTag = transformCaseFunc(currentNode.nodeName);
1221 - if (!_isValidAttribute(lcTag, lcName, value)) {
1222 - continue;
1223 - }
1224 -
1225 - /* Full DOM Clobbering protection via namespace isolation,
1226 - * Prefix id and name attributes with `user-content-`
1227 - */
1228 - if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {
1229 - // Remove the attribute with this value
1230 - _removeAttribute(name, currentNode);
1231 -
1232 - // Prefix the value and later re-create the attribute with the sanitized value
1233 - value = SANITIZE_NAMED_PROPS_PREFIX + value;
1234 - }
1235 -
1236 - /* Handle attributes that require Trusted Types */
1237 - if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {
1238 - if (namespaceURI) ; else {
1239 - switch (trustedTypes.getAttributeType(lcTag, lcName)) {
1240 - case 'TrustedHTML':
1241 - {
1242 - value = trustedTypesPolicy.createHTML(value);
1243 - break;
1244 - }
1245 - case 'TrustedScriptURL':
1246 - {
1247 - value = trustedTypesPolicy.createScriptURL(value);
1248 - break;
1249 - }
1250 - }
1112 + continue;
1113 + }
1114 + /* Handle attributes that require Trusted Types */
1115 + if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {
1116 + if (namespaceURI) ; else {
1117 + switch (trustedTypes.getAttributeType(lcTag, lcName)) {
1118 + case 'TrustedHTML':
1119 + {
1120 + value = trustedTypesPolicy.createHTML(value);
1121 + break;
1122 + }
1123 + case 'TrustedScriptURL':
1124 + {
1125 + value = trustedTypesPolicy.createScriptURL(value);
1126 + break;
1127 + }
1128 }
1129 }
1253 -
1254 - /* Handle invalid data-* attribute set by try-catching it */
1130 + }
1131 + /* Handle invalid data-* attribute set by try-catching it */
1132 + if (value !== initValue) {
1133 try {
1134 if (namespaceURI) {
1135 currentNode.setAttributeNS(namespaceURI, name, value);
@@ -1264,300 +1142,213 @@
1142 } else {
1143 arrayPop(DOMPurify.removed);
1144 }
1267 - } catch (_) {}
1268 - }
1269 -
1270 - /* Execute a hook if present */
1271 - _executeHook('afterSanitizeAttributes', currentNode, null);
1272 - };
1273 -
1274 - /**
1275 - * _sanitizeShadowDOM
1276 - *
1277 - * @param {DocumentFragment} fragment to iterate over recursively
1278 - */
1279 - const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {
1280 - let shadowNode = null;
1281 - const shadowIterator = _createNodeIterator(fragment);
1282 -
1283 - /* Execute a hook if present */
1284 - _executeHook('beforeSanitizeShadowDOM', fragment, null);
1285 - while (shadowNode = shadowIterator.nextNode()) {
1286 - /* Execute a hook if present */
1287 - _executeHook('uponSanitizeShadowNode', shadowNode, null);
1288 -
1289 - /* Sanitize tags and elements */
1290 - if (_sanitizeElements(shadowNode)) {
1291 - continue;
1292 - }
1293 -
1294 - /* Deep shadow DOM detected */
1295 - if (shadowNode.content instanceof DocumentFragment) {
1296 - _sanitizeShadowDOM(shadowNode.content);
1145 + } catch (_) {
1146 + _removeAttribute(name, currentNode);
1147 }
1298 -
1299 - /* Check attributes, sanitize if necessary */
1300 - _sanitizeAttributes(shadowNode);
1148 }
1302 -
1149 + }
1150 + /* Execute a hook if present */
1151 + _executeHooks(hooks.afterSanitizeAttributes, currentNode, null);
1152 + };
1153 + /**
1154 + * _sanitizeShadowDOM
1155 + *
1156 + * @param fragment to iterate over recursively
1157 + */
1158 + const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {
1159 + let shadowNode = null;
1160 + const shadowIterator = _createNodeIterator(fragment);
1161 + /* Execute a hook if present */
1162 + _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null);
1163 + while (shadowNode = shadowIterator.nextNode()) {
1164 /* Execute a hook if present */
1304 - _executeHook('afterSanitizeShadowDOM', fragment, null);
1305 - };
1306 -
1307 - /**
1308 - * Sanitize
1309 - * Public method providing core sanitation functionality
1310 - *
1311 - * @param {String|Node} dirty string or DOM node
1312 - * @param {Object} cfg object
1313 - */
1314 - // eslint-disable-next-line complexity
1315 - DOMPurify.sanitize = function (dirty) {
1316 - let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
1317 - let body = null;
1318 - let importedNode = null;
1319 - let currentNode = null;
1320 - let returnNode = null;
1321 - /* Make sure we have a string to sanitize.
1322 - DO NOT return early, as this will return the wrong type if
1323 - the user has requested a DOM object rather than a string */
1324 - IS_EMPTY_INPUT = !dirty;
1325 - if (IS_EMPTY_INPUT) {
1326 - dirty = '<!-->';
1327 - }
1328 -
1329 - /* Stringify, in case dirty is an object */
1330 - if (typeof dirty !== 'string' && !_isNode(dirty)) {
1331 - if (typeof dirty.toString === 'function') {
1332 - dirty = dirty.toString();
1333 - if (typeof dirty !== 'string') {
1334 - throw typeErrorCreate('dirty is not a string, aborting');
1335 - }
1336 - } else {
1337 - throw typeErrorCreate('toString is not a function');
1338 - }
1165 + _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null);
1166 + /* Sanitize tags and elements */
1167 + _sanitizeElements(shadowNode);
1168 + /* Check attributes next */
1169 + _sanitizeAttributes(shadowNode);
1170 + /* Deep shadow DOM detected */
1171 + if (shadowNode.content instanceof DocumentFragment) {
1172 + _sanitizeShadowDOM(shadowNode.content);
1173 }
1340 -
1341 - /* Return dirty HTML if DOMPurify cannot run */
1342 - if (!DOMPurify.isSupported) {
1343 - return dirty;
1344 - }
1345 -
1346 - /* Assign config vars */
1347 - if (!SET_CONFIG) {
1348 - _parseConfig(cfg);
1349 - }
1350 -
1351 - /* Clean up removed elements */
1352 - DOMPurify.removed = [];
1353 -
1354 - /* Check if dirty is correctly typed for IN_PLACE */
1355 - if (typeof dirty === 'string') {
1356 - IN_PLACE = false;
1357 - }
1358 - if (IN_PLACE) {
1359 - /* Do some early pre-sanitization to avoid unsafe root nodes */
1360 - if (dirty.nodeName) {
1361 - const tagName = transformCaseFunc(dirty.nodeName);
1362 - if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
1363 - throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');
1364 - }
1365 - }
1366 - } else if (dirty instanceof Node) {
1367 - /* If dirty is a DOM element, append to an empty document to avoid
1368 - elements being stripped by the parser */
1369 - body = _initDocument('<!---->');
1370 - importedNode = body.ownerDocument.importNode(dirty, true);
1371 - if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') {
1372 - /* Node is already a body, use as is */
1373 - body = importedNode;
1374 - } else if (importedNode.nodeName === 'HTML') {
1375 - body = importedNode;
1376 - } else {
1377 - // eslint-disable-next-line unicorn/prefer-dom-node-append
1378 - body.appendChild(importedNode);
1174 + }
1175 + /* Execute a hook if present */
1176 + _executeHooks(hooks.afterSanitizeShadowDOM, fragment, null);
1177 + };
1178 + // eslint-disable-next-line complexity
1179 + DOMPurify.sanitize = function (dirty) {
1180 + let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
1181 + let body = null;
1182 + let importedNode = null;
1183 + let currentNode = null;
1184 + let returnNode = null;
1185 + /* Make sure we have a string to sanitize.
1186 + DO NOT return early, as this will return the wrong type if
1187 + the user has requested a DOM object rather than a string */
1188 + IS_EMPTY_INPUT = !dirty;
1189 + if (IS_EMPTY_INPUT) {
1190 + dirty = '<!-->';
1191 + }
1192 + /* Stringify, in case dirty is an object */
1193 + if (typeof dirty !== 'string' && !_isNode(dirty)) {
1194 + if (typeof dirty.toString === 'function') {
1195 + dirty = dirty.toString();
1196 + if (typeof dirty !== 'string') {
1197 + throw typeErrorCreate('dirty is not a string, aborting');
1198 }
1199 } else {
1381 - /* Exit directly if we have nothing to do */
1382 - if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT &&
1383 - // eslint-disable-next-line unicorn/prefer-includes
1384 - dirty.indexOf('<') === -1) {
1385 - return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;
1386 - }
1387 -
1388 - /* Initialize the document to work on */
1389 - body = _initDocument(dirty);
1390 -
1391 - /* Check we have a DOM node from the data */
1392 - if (!body) {
1393 - return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';
1394 - }
1200 + throw typeErrorCreate('toString is not a function');
1201 }
1396 -
1397 - /* Remove first element node (ours) if FORCE_BODY is set */
1398 - if (body && FORCE_BODY) {
1399 - _forceRemove(body.firstChild);
1400 - }
1401 -
1402 - /* Get node iterator */
1403 - const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);
1404 -
1405 - /* Now start iterating over the created document */
1406 - while (currentNode = nodeIterator.nextNode()) {
1407 - /* Sanitize tags and elements */
1408 - if (_sanitizeElements(currentNode)) {
1409 - continue;
1410 - }
1411 -
1412 - /* Shadow DOM detected, sanitize it */
1413 - if (currentNode.content instanceof DocumentFragment) {
1414 - _sanitizeShadowDOM(currentNode.content);
1415 - }
1416 -
1417 - /* Check attributes, sanitize if necessary */
1418 - _sanitizeAttributes(currentNode);
1419 - }
1420 -
1421 - /* If we sanitized `dirty` in-place, return it. */
1422 - if (IN_PLACE) {
1423 - return dirty;
1424 - }
1425 -
1426 - /* Return sanitized string or DOM */
1427 - if (RETURN_DOM) {
1428 - if (RETURN_DOM_FRAGMENT) {
1429 - returnNode = createDocumentFragment.call(body.ownerDocument);
1430 - while (body.firstChild) {
1431 - // eslint-disable-next-line unicorn/prefer-dom-node-append
1432 - returnNode.appendChild(body.firstChild);
1433 - }
1434 - } else {
1435 - returnNode = body;
1436 - }
1437 - if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {
1438 - /*
1439 - AdoptNode() is not used because internal state is not reset
1440 - (e.g. the past names map of a HTMLFormElement), this is safe
1441 - in theory but we would rather not risk another attack vector.
1442 - The state that is cloned by importNode() is explicitly defined
1443 - by the specs.
1444 - */
1445 - returnNode = importNode.call(originalDocument, returnNode, true);
1202 + }
1203 + /* Return dirty HTML if DOMPurify cannot run */
1204 + if (!DOMPurify.isSupported) {
1205 + return dirty;
1206 + }
1207 + /* Assign config vars */
1208 + if (!SET_CONFIG) {
1209 + _parseConfig(cfg);
1210 + }
1211 + /* Clean up removed elements */
1212 + DOMPurify.removed = [];
1213 + /* Check if dirty is correctly typed for IN_PLACE */
1214 + if (typeof dirty === 'string') {
1215 + IN_PLACE = false;
1216 + }
1217 + if (IN_PLACE) {
1218 + /* Do some early pre-sanitization to avoid unsafe root nodes */
1219 + if (dirty.nodeName) {
1220 + const tagName = transformCaseFunc(dirty.nodeName);
1221 + if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
1222 + throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');
1223 }
1447 - return returnNode;
1448 - }
1449 - let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
1450 -
1451 - /* Serialize doctype if allowed */
1452 - if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {
1453 - serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML;
1454 - }
1455 -
1456 - /* Sanitize final string template-safe */
1457 - if (SAFE_FOR_TEMPLATES) {
1458 - arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
1459 - serializedHTML = stringReplace(serializedHTML, expr, ' ');
1460 - });
1224 }
1462 - return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;
1463 - };
1464 -
1465 - /**
1466 - * Public method to set the configuration once
1467 - * setConfig
1468 - *
1469 - * @param {Object} cfg configuration object
1470 - */
1471 - DOMPurify.setConfig = function () {
1472 - let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
1473 - _parseConfig(cfg);
1474 - SET_CONFIG = true;
1475 - };
1476 -
1477 - /**
1478 - * Public method to remove the configuration
1479 - * clearConfig
1480 - *
1481 - */
1482 - DOMPurify.clearConfig = function () {
1483 - CONFIG = null;
1484 - SET_CONFIG = false;
1485 - };
1486 -
1487 - /**
1488 - * Public method to check if an attribute value is valid.
1489 - * Uses last set config, if any. Otherwise, uses config defaults.
1490 - * isValidAttribute
1491 - *
1492 - * @param {String} tag Tag name of containing element.
1493 - * @param {String} attr Attribute name.
1494 - * @param {String} value Attribute value.
1495 - * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false.
1496 - */
1497 - DOMPurify.isValidAttribute = function (tag, attr, value) {
1498 - /* Initialize shared config vars if necessary. */
1499 - if (!CONFIG) {
1500 - _parseConfig({});
1225 + } else if (dirty instanceof Node) {
1226 + /* If dirty is a DOM element, append to an empty document to avoid
1227 + elements being stripped by the parser */
1228 + body = _initDocument('<!---->');
1229 + importedNode = body.ownerDocument.importNode(dirty, true);
1230 + if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') {
1231 + /* Node is already a body, use as is */
1232 + body = importedNode;
1233 + } else if (importedNode.nodeName === 'HTML') {
1234 + body = importedNode;
1235 + } else {
1236 + // eslint-disable-next-line unicorn/prefer-dom-node-append
1237 + body.appendChild(importedNode);
1238 }
1502 - const lcTag = transformCaseFunc(tag);
1503 - const lcName = transformCaseFunc(attr);
1504 - return _isValidAttribute(lcTag, lcName, value);
1505 - };
1506 -
1507 - /**
1508 - * AddHook
1509 - * Public method to add DOMPurify hooks
1510 - *
1511 - * @param {String} entryPoint entry point for the hook to add
1512 - * @param {Function} hookFunction function to execute
1513 - */
1514 - DOMPurify.addHook = function (entryPoint, hookFunction) {
1515 - if (typeof hookFunction !== 'function') {
1516 - return;
1239 + } else {
1240 + /* Exit directly if we have nothing to do */
1241 + if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT &&
1242 + // eslint-disable-next-line unicorn/prefer-includes
1243 + dirty.indexOf('<') === -1) {
1244 + return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;
1245 }
1518 - hooks[entryPoint] = hooks[entryPoint] || [];
1519 - arrayPush(hooks[entryPoint], hookFunction);
1520 - };
1521 -
1522 - /**
1523 - * RemoveHook
1524 - * Public method to remove a DOMPurify hook at a given entryPoint
1525 - * (pops it from the stack of hooks if more are present)
1526 - *
1527 - * @param {String} entryPoint entry point for the hook to remove
1528 - * @return {Function} removed(popped) hook
1529 - */
1530 - DOMPurify.removeHook = function (entryPoint) {
1531 - if (hooks[entryPoint]) {
1532 - return arrayPop(hooks[entryPoint]);
1246 + /* Initialize the document to work on */
1247 + body = _initDocument(dirty);
1248 + /* Check we have a DOM node from the data */
1249 + if (!body) {
1250 + return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';
1251 }
1534 - };
1535 -
1536 - /**
1537 - * RemoveHooks
1538 - * Public method to remove all DOMPurify hooks at a given entryPoint
1539 - *
1540 - * @param {String} entryPoint entry point for the hooks to remove
1541 - */
1542 - DOMPurify.removeHooks = function (entryPoint) {
1543 - if (hooks[entryPoint]) {
1544 - hooks[entryPoint] = [];
1252 + }
1253 + /* Remove first element node (ours) if FORCE_BODY is set */
1254 + if (body && FORCE_BODY) {
1255 + _forceRemove(body.firstChild);
1256 + }
1257 + /* Get node iterator */
1258 + const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body);
1259 + /* Now start iterating over the created document */
1260 + while (currentNode = nodeIterator.nextNode()) {
1261 + /* Sanitize tags and elements */
1262 + _sanitizeElements(currentNode);
1263 + /* Check attributes next */
1264 + _sanitizeAttributes(currentNode);
1265 + /* Shadow DOM detected, sanitize it */
1266 + if (currentNode.content instanceof DocumentFragment) {
1267 + _sanitizeShadowDOM(currentNode.content);
1268 }
1546 - };
1547 -
1548 - /**
1549 - * RemoveAllHooks
1550 - * Public method to remove all DOMPurify hooks
1551 - */
1552 - DOMPurify.removeAllHooks = function () {
1553 - hooks = {};
1554 - };
1555 - return DOMPurify;
1556 - }
1557 - var purify = createDOMPurify();
1558 -
1559 - return purify;
1560 -
1561 - }));
1562 - //# sourceMappingURL=purify.js.map
1563 -
\ No newline at end of file
1269 + }
1270 + /* If we sanitized `dirty` in-place, return it. */
1271 + if (IN_PLACE) {
1272 + return dirty;
1273 + }
1274 + /* Return sanitized string or DOM */
1275 + if (RETURN_DOM) {
1276 + if (RETURN_DOM_FRAGMENT) {
1277 + returnNode = createDocumentFragment.call(body.ownerDocument);
1278 + while (body.firstChild) {
1279 + // eslint-disable-next-line unicorn/prefer-dom-node-append
1280 + returnNode.appendChild(body.firstChild);
1281 + }
1282 + } else {
1283 + returnNode = body;
1284 + }
1285 + if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {
1286 + /*
1287 + AdoptNode() is not used because internal state is not reset
1288 + (e.g. the past names map of a HTMLFormElement), this is safe
1289 + in theory but we would rather not risk another attack vector.
1290 + The state that is cloned by importNode() is explicitly defined
1291 + by the specs.
1292 + */
1293 + returnNode = importNode.call(originalDocument, returnNode, true);
1294 + }
1295 + return returnNode;
1296 + }
1297 + let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
1298 + /* Serialize doctype if allowed */
1299 + if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {
1300 + serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML;
1301 + }
1302 + /* Sanitize final string template-safe */
1303 + if (SAFE_FOR_TEMPLATES) {
1304 + arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => {
1305 + serializedHTML = stringReplace(serializedHTML, expr, ' ');
1306 + });
1307 + }
1308 + return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;
1309 + };
1310 + DOMPurify.setConfig = function () {
1311 + let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
1312 + _parseConfig(cfg);
1313 + SET_CONFIG = true;
1314 + };
1315 + DOMPurify.clearConfig = function () {
1316 + CONFIG = null;
1317 + SET_CONFIG = false;
1318 + };
1319 + DOMPurify.isValidAttribute = function (tag, attr, value) {
1320 + /* Initialize shared config vars if necessary. */
1321 + if (!CONFIG) {
1322 + _parseConfig({});
1323 + }
1324 + const lcTag = transformCaseFunc(tag);
1325 + const lcName = transformCaseFunc(attr);
1326 + return _isValidAttribute(lcTag, lcName, value);
1327 + };
1328 + DOMPurify.addHook = function (entryPoint, hookFunction) {
1329 + if (typeof hookFunction !== 'function') {
1330 + return;
1331 + }
1332 + arrayPush(hooks[entryPoint], hookFunction);
1333 + };
1334 + DOMPurify.removeHook = function (entryPoint, hookFunction) {
1335 + if (hookFunction !== undefined) {
1336 + const index = arrayLastIndexOf(hooks[entryPoint], hookFunction);
1337 + return index === -1 ? undefined : arraySplice(hooks[entryPoint], index, 1)[0];
1338 + }
1339 + return arrayPop(hooks[entryPoint]);
1340 + };
1341 + DOMPurify.removeHooks = function (entryPoint) {
1342 + hooks[entryPoint] = [];
1343 + };
1344 + DOMPurify.removeAllHooks = function () {
1345 + hooks = _createHooksMap();
1346 + };
1347 + return DOMPurify;
1348 + }
1349 + var purify = createDOMPurify();
1350 +
1351 + return purify;
1352 +
1353 +}));
1354 +//# sourceMappingURL=purify.js.map
public/scripts/purify.js.map
+1 -1
@@ -1 +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 <html>... 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 <svg>. 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 <annotation-xml> 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 <math>. 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 // <math> 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 = '<remove></remove>' + 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 '<html xmlns=\"http://www.w3.org/1999/xhtml\"><head></head><body>' +\n dirty +\n '</body></html>';\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 '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\\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
1 +{"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 = 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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<T>(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<string, any>,\n array: readonly any[],\n transformCaseFunc: ReturnType<typeof unapply<string>> = stringToLowerCase\n): Record<string, any> {\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<T>(array: T[]): Array<T | null> {\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<T extends Record<string, any>>(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<T extends Record<string, any>>(\n object: T,\n prop: string\n): ReturnType<typeof unapply<any>> | (() => 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 <html>... 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<typeof addToSet>[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 <svg>. 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 <annotation-xml> 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 <math>. 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 // <math> 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 = '<remove></remove>' + 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 '<html xmlns=\"http://www.w3.org/1999/xhtml\"><head></head><body>' +\n dirty +\n '</body></html>';\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<T>[0], data: Parameters<T>[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 '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\\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<RemovedElement | RemovedAttribute>;\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<string, boolean>;\n}\n\nexport interface UponSanitizeAttributeHookEvent {\n attrName: string;\n attrValue: string;\n keepAttr: boolean;\n allowedAttributes: Record<string, boolean>;\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 | 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public/scripts/purify.min.js.map
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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 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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 <html>... 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 <svg>. 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 <annotation-xml> 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 <math>. 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 // <math> 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 = '<remove></remove>' + 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 '<html xmlns=\"http://www.w3.org/1999/xhtml\"><head></head><body>' +\n dirty +\n '</body></html>';\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 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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 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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 '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\\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 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1 +{"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<T>(\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<T>(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<string, any>,\n array: readonly any[],\n transformCaseFunc: ReturnType<typeof unapply<string>> = stringToLowerCase\n): Record<string, any> {\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<T>(array: T[]): Array<T | null> {\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<T extends Record<string, any>>(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<T extends Record<string, any>>(\n object: T,\n prop: string\n): ReturnType<typeof unapply<any>> | (() => 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 <html>... 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<typeof addToSet>[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 <svg>. 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 <annotation-xml> 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 <math>. 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 // <math> 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 = '<remove></remove>' + 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 '<html xmlns=\"http://www.w3.org/1999/xhtml\"><head></head><body>' +\n dirty +\n '</body></html>';\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<T>[0], data: Parameters<T>[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 '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\\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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