| /*! @license DOMPurify 3.2.4 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.4/LICENSE */ |
| |
| (function (global, factory) { |
| typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : |
| typeof define === 'function' && define.amd ? define(factory) : |
| (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.DOMPurify = factory()); |
| })(this, (function () { 'use strict'; |
| |
| const { |
| entries, |
| setPrototypeOf, |
| isFrozen, |
| getPrototypeOf, |
| getOwnPropertyDescriptor |
| } = Object; |
| let { |
| freeze, |
| seal, |
| create |
| } = Object; // eslint-disable-line import/no-mutable-exports |
| let { |
| apply, |
| construct |
| } = typeof Reflect !== 'undefined' && Reflect; |
| if (!freeze) { |
| freeze = function freeze(x) { |
| return x; |
| }; |
| } |
| if (!seal) { |
| seal = function seal(x) { |
| return x; |
| }; |
| } |
| if (!apply) { |
| apply = function apply(fun, thisValue, args) { |
| return fun.apply(thisValue, args); |
| }; |
| } |
| if (!construct) { |
| construct = function construct(Func, args) { |
| return new Func(...args); |
| }; |
| } |
| const arrayForEach = unapply(Array.prototype.forEach); |
| const arrayLastIndexOf = unapply(Array.prototype.lastIndexOf); |
| const arrayPop = unapply(Array.prototype.pop); |
| const arrayPush = unapply(Array.prototype.push); |
| const arraySplice = unapply(Array.prototype.splice); |
| const stringToLowerCase = unapply(String.prototype.toLowerCase); |
| const stringToString = unapply(String.prototype.toString); |
| const stringMatch = unapply(String.prototype.match); |
| const stringReplace = unapply(String.prototype.replace); |
| const stringIndexOf = unapply(String.prototype.indexOf); |
| const stringTrim = unapply(String.prototype.trim); |
| const objectHasOwnProperty = unapply(Object.prototype.hasOwnProperty); |
| const regExpTest = unapply(RegExp.prototype.test); |
| const typeErrorCreate = unconstruct(TypeError); |
| /** |
| * Creates a new function that calls the given function with a specified thisArg and arguments. |
| * |
| * @param func - The function to be wrapped and called. |
| * @returns A new function that calls the given function with a specified thisArg and arguments. |
| */ |
| function unapply(func) { |
| return function (thisArg) { |
| for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { |
| args[_key - 1] = arguments[_key]; |
| } |
| return apply(func, thisArg, args); |
| }; |
| } |
| /** |
| * Creates a new function that constructs an instance of the given constructor function with the provided arguments. |
| * |
| * @param func - The constructor function to be wrapped and called. |
| * @returns A new function that constructs an instance of the given constructor function with the provided arguments. |
| */ |
| function unconstruct(func) { |
| return function () { |
| for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { |
| args[_key2] = arguments[_key2]; |
| } |
| return construct(func, args); |
| }; |
| } |
| /** |
| * Add properties to a lookup table |
| * |
| * @param set - The set to which elements will be added. |
| * @param array - The array containing elements to be added to the set. |
| * @param transformCaseFunc - An optional function to transform the case of each element before adding to the set. |
| * @returns The modified set with added elements. |
| */ |
| function addToSet(set, array) { |
| let transformCaseFunc = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : stringToLowerCase; |
| if (setPrototypeOf) { |
| // Make 'in' and truthy checks like Boolean(set.constructor) |
| // independent of any properties defined on Object.prototype. |
| // Prevent prototype setters from intercepting set as a this value. |
| setPrototypeOf(set, null); |
| } |
| let l = array.length; |
| while (l--) { |
| let element = array[l]; |
| if (typeof element === 'string') { |
| const lcElement = transformCaseFunc(element); |
| if (lcElement !== element) { |
| // Config presets (e.g. tags.js, attrs.js) are immutable. |
| if (!isFrozen(array)) { |
| array[l] = lcElement; |
| } |
| element = lcElement; |
| } |
| } |
| set[element] = true; |
| } |
| return set; |
| } |
| /** |
| * Clean up an array to harden against CSPP |
| * |
| * @param array - The array to be cleaned. |
| * @returns The cleaned version of the array |
| */ |
| function cleanArray(array) { |
| for (let index = 0; index < array.length; index++) { |
| const isPropertyExist = objectHasOwnProperty(array, index); |
| if (!isPropertyExist) { |
| array[index] = null; |
| } |
| } |
| return array; |
| } |
| /** |
| * Shallow clone an object |
| * |
| * @param object - The object to be cloned. |
| * @returns A new object that copies the original. |
| */ |
| function clone(object) { |
| const newObject = create(null); |
| for (const [property, value] of entries(object)) { |
| const isPropertyExist = objectHasOwnProperty(object, property); |
| if (isPropertyExist) { |
| if (Array.isArray(value)) { |
| newObject[property] = cleanArray(value); |
| } else if (value && typeof value === 'object' && value.constructor === Object) { |
| newObject[property] = clone(value); |
| } else { |
| newObject[property] = value; |
| } |
| } |
| } |
| return newObject; |
| } |
| /** |
| * This method automatically checks if the prop is function or getter and behaves accordingly. |
| * |
| * @param object - The object to look up the getter function in its prototype chain. |
| * @param prop - The property name for which to find the getter function. |
| * @returns The getter function found in the prototype chain or a fallback function. |
| */ |
| function lookupGetter(object, prop) { |
| while (object !== null) { |
| const desc = getOwnPropertyDescriptor(object, prop); |
| if (desc) { |
| if (desc.get) { |
| return unapply(desc.get); |
| } |
| if (typeof desc.value === 'function') { |
| return unapply(desc.value); |
| } |
| } |
| object = getPrototypeOf(object); |
| } |
| function fallbackValue() { |
| return null; |
| } |
| return fallbackValue; |
| } |
| |
| const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); |
| const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']); |
| const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); |
| // List of SVG elements that are disallowed by default. |
| // We still need to know them so that we can do namespace |
| // checks properly in case one wants to add them to |
| // allow-list. |
| const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']); |
| const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); |
| // Similarly to SVG, we want to know all MathML elements, |
| // even those that we disallow by default. |
| const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']); |
| const text = freeze(['#text']); |
| |
| const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'popover', 'popovertarget', 'popovertargetaction', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'wrap', 'xmlns', 'slot']); |
| const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'amplitude', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'exponent', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'intercept', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'slope', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'tablevalues', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']); |
| const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']); |
| const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']); |
| |
| // eslint-disable-next-line unicorn/better-regex |
| const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode |
| const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm); |
| const TMPLIT_EXPR = seal(/\$\{[\w\W]*/gm); // eslint-disable-line unicorn/better-regex |
| const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]+$/); // eslint-disable-line no-useless-escape |
| const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape |
| const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape |
| ); |
| const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i); |
| const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex |
| ); |
| const DOCTYPE_NAME = seal(/^html$/i); |
| const CUSTOM_ELEMENT = seal(/^[a-z][.\w]*(-[.\w]+)+$/i); |
| |
| var EXPRESSIONS = /*#__PURE__*/Object.freeze({ |
| __proto__: null, |
| ARIA_ATTR: ARIA_ATTR, |
| ATTR_WHITESPACE: ATTR_WHITESPACE, |
| CUSTOM_ELEMENT: CUSTOM_ELEMENT, |
| DATA_ATTR: DATA_ATTR, |
| DOCTYPE_NAME: DOCTYPE_NAME, |
| ERB_EXPR: ERB_EXPR, |
| IS_ALLOWED_URI: IS_ALLOWED_URI, |
| IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA, |
| MUSTACHE_EXPR: MUSTACHE_EXPR, |
| TMPLIT_EXPR: TMPLIT_EXPR |
| }); |
| |
| /* eslint-disable @typescript-eslint/indent */ |
| // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType |
| const NODE_TYPE = { |
| element: 1, |
| attribute: 2, |
| text: 3, |
| cdataSection: 4, |
| entityReference: 5, |
| // Deprecated |
| entityNode: 6, |
| // Deprecated |
| progressingInstruction: 7, |
| comment: 8, |
| document: 9, |
| documentType: 10, |
| documentFragment: 11, |
| notation: 12 // Deprecated |
| }; |
| const getGlobal = function getGlobal() { |
| return typeof window === 'undefined' ? null : window; |
| }; |
| /** |
| * Creates a no-op policy for internal use only. |
| * Don't export this function outside this module! |
| * @param trustedTypes The policy factory. |
| * @param purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix). |
| * @return The policy created (or null, if Trusted Types |
| * are not supported or creating the policy failed). |
| */ |
| const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) { |
| if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') { |
| return null; |
| } |
| // Allow the callers to control the unique policy name |
| // by adding a data-tt-policy-suffix to the script element with the DOMPurify. |
| // Policy creation with duplicate names throws in Trusted Types. |
| let suffix = null; |
| const ATTR_NAME = 'data-tt-policy-suffix'; |
| if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) { |
| suffix = purifyHostElement.getAttribute(ATTR_NAME); |
| } |
| const policyName = 'dompurify' + (suffix ? '#' + suffix : ''); |
| try { |
| return trustedTypes.createPolicy(policyName, { |
| createHTML(html) { |
| return html; |
| }, |
| createScriptURL(scriptUrl) { |
| return scriptUrl; |
| } |
| }); |
| } catch (_) { |
| // Policy creation failed (most likely another DOMPurify script has |
| // already run). Skip creating the policy, as this will only cause errors |
| // if TT are enforced. |
| console.warn('TrustedTypes policy ' + policyName + ' could not be created.'); |
| return null; |
| } |
| }; |
| const _createHooksMap = function _createHooksMap() { |
| return { |
| afterSanitizeAttributes: [], |
| afterSanitizeElements: [], |
| afterSanitizeShadowDOM: [], |
| beforeSanitizeAttributes: [], |
| beforeSanitizeElements: [], |
| beforeSanitizeShadowDOM: [], |
| uponSanitizeAttribute: [], |
| uponSanitizeElement: [], |
| uponSanitizeShadowNode: [] |
| }; |
| }; |
| function createDOMPurify() { |
| let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal(); |
| const DOMPurify = root => createDOMPurify(root); |
| DOMPurify.version = '3.2.4'; |
| DOMPurify.removed = []; |
| if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document || !window.Element) { |
| // Not running in a browser, provide a factory function |
| // so that you can pass your own Window |
| DOMPurify.isSupported = false; |
| return DOMPurify; |
| } |
| let { |
| document |
| } = window; |
| const originalDocument = document; |
| const currentScript = originalDocument.currentScript; |
| const { |
| DocumentFragment, |
| HTMLTemplateElement, |
| Node, |
| Element, |
| NodeFilter, |
| NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap, |
| HTMLFormElement, |
| DOMParser, |
| trustedTypes |
| } = window; |
| const ElementPrototype = Element.prototype; |
| const cloneNode = lookupGetter(ElementPrototype, 'cloneNode'); |
| const remove = lookupGetter(ElementPrototype, 'remove'); |
| const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling'); |
| const getChildNodes = lookupGetter(ElementPrototype, 'childNodes'); |
| const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); |
| // As per issue #47, the web-components registry is inherited by a |
| // new document created via createHTMLDocument. As per the spec |
| // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries) |
| // a new empty registry is used when creating a template contents owner |
| // document, so we use that as our parent document to ensure nothing |
| // is inherited. |
| if (typeof HTMLTemplateElement === 'function') { |
| const template = document.createElement('template'); |
| if (template.content && template.content.ownerDocument) { |
| document = template.content.ownerDocument; |
| } |
| } |
| let trustedTypesPolicy; |
| let emptyHTML = ''; |
| const { |
| implementation, |
| createNodeIterator, |
| createDocumentFragment, |
| getElementsByTagName |
| } = document; |
| const { |
| importNode |
| } = originalDocument; |
| let hooks = _createHooksMap(); |
| /** |
| * Expose whether this browser supports running the full DOMPurify. |
| */ |
| DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined; |
| const { |
| MUSTACHE_EXPR, |
| ERB_EXPR, |
| TMPLIT_EXPR, |
| DATA_ATTR, |
| ARIA_ATTR, |
| IS_SCRIPT_OR_DATA, |
| ATTR_WHITESPACE, |
| CUSTOM_ELEMENT |
| } = EXPRESSIONS; |
| let { |
| IS_ALLOWED_URI: IS_ALLOWED_URI$1 |
| } = EXPRESSIONS; |
| /** |
| * We consider the elements and attributes below to be safe. Ideally |
| * don't add any new ones but feel free to remove unwanted ones. |
| */ |
| /* allowed element names */ |
| let ALLOWED_TAGS = null; |
| const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]); |
| /* Allowed attribute names */ |
| let ALLOWED_ATTR = null; |
| const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]); |
| /* |
| * Configure how DOMPurify should handle custom elements and their attributes as well as customized built-in elements. |
| * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements) |
| * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list) |
| * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`. |
| */ |
| let CUSTOM_ELEMENT_HANDLING = Object.seal(create(null, { |
| tagNameCheck: { |
| writable: true, |
| configurable: false, |
| enumerable: true, |
| value: null |
| }, |
| attributeNameCheck: { |
| writable: true, |
| configurable: false, |
| enumerable: true, |
| value: null |
| }, |
| allowCustomizedBuiltInElements: { |
| writable: true, |
| configurable: false, |
| enumerable: true, |
| value: false |
| } |
| })); |
| /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */ |
| let FORBID_TAGS = null; |
| /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */ |
| let FORBID_ATTR = null; |
| /* Decide if ARIA attributes are okay */ |
| let ALLOW_ARIA_ATTR = true; |
| /* Decide if custom data attributes are okay */ |
| let ALLOW_DATA_ATTR = true; |
| /* Decide if unknown protocols are okay */ |
| let ALLOW_UNKNOWN_PROTOCOLS = false; |
| /* Decide if self-closing tags in attributes are allowed. |
| * Usually removed due to a mXSS issue in jQuery 3.0 */ |
| let ALLOW_SELF_CLOSE_IN_ATTR = true; |
| /* Output should be safe for common template engines. |
| * This means, DOMPurify removes data attributes, mustaches and ERB |
| */ |
| let SAFE_FOR_TEMPLATES = false; |
| /* Output should be safe even for XML used within HTML and alike. |
| * This means, DOMPurify removes comments when containing risky content. |
| */ |
| let SAFE_FOR_XML = true; |
| /* Decide if document with <html>... should be returned */ |
| let WHOLE_DOCUMENT = false; |
| /* Track whether config is already set on this instance of DOMPurify. */ |
| let SET_CONFIG = false; |
| /* Decide if all elements (e.g. style, script) must be children of |
| * document.body. By default, browsers might move them to document.head */ |
| let FORCE_BODY = false; |
| /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html |
| * string (or a TrustedHTML object if Trusted Types are supported). |
| * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead |
| */ |
| let RETURN_DOM = false; |
| /* Decide if a DOM `DocumentFragment` should be returned, instead of a html |
| * string (or a TrustedHTML object if Trusted Types are supported) */ |
| let RETURN_DOM_FRAGMENT = false; |
| /* Try to return a Trusted Type object instead of a string, return a string in |
| * case Trusted Types are not supported */ |
| let RETURN_TRUSTED_TYPE = false; |
| /* Output should be free from DOM clobbering attacks? |
| * This sanitizes markups named with colliding, clobberable built-in DOM APIs. |
| */ |
| let SANITIZE_DOM = true; |
| /* Achieve full DOM Clobbering protection by isolating the namespace of named |
| * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules. |
| * |
| * HTML/DOM spec rules that enable DOM Clobbering: |
| * - Named Access on Window (§7.3.3) |
| * - DOM Tree Accessors (§3.1.5) |
| * - Form Element Parent-Child Relations (§4.10.3) |
| * - Iframe srcdoc / Nested WindowProxies (§4.8.5) |
| * - HTMLCollection (§4.2.10.2) |
| * |
| * Namespace isolation is implemented by prefixing `id` and `name` attributes |
| * with a constant string, i.e., `user-content-` |
| */ |
| let SANITIZE_NAMED_PROPS = false; |
| const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-'; |
| /* Keep element content when removing element? */ |
| let KEEP_CONTENT = true; |
| /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead |
| * of importing it into a new Document and returning a sanitized copy */ |
| let IN_PLACE = false; |
| /* Allow usage of profiles like html, svg and mathMl */ |
| let USE_PROFILES = {}; |
| /* Tags to ignore content of when KEEP_CONTENT is true */ |
| let FORBID_CONTENTS = null; |
| const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']); |
| /* Tags that are safe for data: URIs */ |
| let DATA_URI_TAGS = null; |
| const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']); |
| /* Attributes safe for values like "javascript:" */ |
| let URI_SAFE_ATTRIBUTES = null; |
| const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']); |
| const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML'; |
| const SVG_NAMESPACE = 'http://www.w3.org/2000/svg'; |
| const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml'; |
| /* Document namespace */ |
| let NAMESPACE = HTML_NAMESPACE; |
| let IS_EMPTY_INPUT = false; |
| /* Allowed XHTML+XML namespaces */ |
| let ALLOWED_NAMESPACES = null; |
| const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString); |
| let MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']); |
| let HTML_INTEGRATION_POINTS = addToSet({}, ['annotation-xml']); |
| // Certain elements are allowed in both SVG and HTML |
| // namespace. We need to specify them explicitly |
| // so that they don't get erroneously deleted from |
| // HTML namespace. |
| const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']); |
| /* Parsing of strict XHTML documents */ |
| let PARSER_MEDIA_TYPE = null; |
| const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html']; |
| const DEFAULT_PARSER_MEDIA_TYPE = 'text/html'; |
| let transformCaseFunc = null; |
| /* Keep a reference to config to pass to hooks */ |
| let CONFIG = null; |
| /* Ideally, do not touch anything below this line */ |
| /* ______________________________________________ */ |
| const formElement = document.createElement('form'); |
| const isRegexOrFunction = function isRegexOrFunction(testValue) { |
| return testValue instanceof RegExp || testValue instanceof Function; |
| }; |
| /** |
| * _parseConfig |
| * |
| * @param cfg optional config literal |
| */ |
| // eslint-disable-next-line complexity |
| const _parseConfig = function _parseConfig() { |
| let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; |
| if (CONFIG && CONFIG === cfg) { |
| return; |
| } |
| /* Shield configuration object from tampering */ |
| if (!cfg || typeof cfg !== 'object') { |
| cfg = {}; |
| } |
| /* Shield configuration object from prototype pollution */ |
| cfg = clone(cfg); |
| PARSER_MEDIA_TYPE = |
| // eslint-disable-next-line unicorn/prefer-includes |
| SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? DEFAULT_PARSER_MEDIA_TYPE : cfg.PARSER_MEDIA_TYPE; |
| // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is. |
| transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase; |
| /* Set configuration parameters */ |
| ALLOWED_TAGS = objectHasOwnProperty(cfg, 'ALLOWED_TAGS') ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS; |
| ALLOWED_ATTR = objectHasOwnProperty(cfg, 'ALLOWED_ATTR') ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR; |
| ALLOWED_NAMESPACES = objectHasOwnProperty(cfg, 'ALLOWED_NAMESPACES') ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES; |
| URI_SAFE_ATTRIBUTES = objectHasOwnProperty(cfg, 'ADD_URI_SAFE_ATTR') ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), cfg.ADD_URI_SAFE_ATTR, transformCaseFunc) : DEFAULT_URI_SAFE_ATTRIBUTES; |
| DATA_URI_TAGS = objectHasOwnProperty(cfg, 'ADD_DATA_URI_TAGS') ? addToSet(clone(DEFAULT_DATA_URI_TAGS), cfg.ADD_DATA_URI_TAGS, transformCaseFunc) : DEFAULT_DATA_URI_TAGS; |
| FORBID_CONTENTS = objectHasOwnProperty(cfg, 'FORBID_CONTENTS') ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS; |
| FORBID_TAGS = objectHasOwnProperty(cfg, 'FORBID_TAGS') ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {}; |
| FORBID_ATTR = objectHasOwnProperty(cfg, 'FORBID_ATTR') ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {}; |
| USE_PROFILES = objectHasOwnProperty(cfg, 'USE_PROFILES') ? cfg.USE_PROFILES : false; |
| ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true |
| ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true |
| ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false |
| ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true |
| SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false |
| SAFE_FOR_XML = cfg.SAFE_FOR_XML !== false; // Default true |
| WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false |
| RETURN_DOM = cfg.RETURN_DOM || false; // Default false |
| RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false |
| RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false |
| FORCE_BODY = cfg.FORCE_BODY || false; // Default false |
| SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true |
| SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false |
| KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true |
| IN_PLACE = cfg.IN_PLACE || false; // Default false |
| IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI; |
| NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE; |
| MATHML_TEXT_INTEGRATION_POINTS = cfg.MATHML_TEXT_INTEGRATION_POINTS || MATHML_TEXT_INTEGRATION_POINTS; |
| HTML_INTEGRATION_POINTS = cfg.HTML_INTEGRATION_POINTS || HTML_INTEGRATION_POINTS; |
| CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {}; |
| if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) { |
| CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck; |
| } |
| if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) { |
| CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck; |
| } |
| if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') { |
| CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements; |
| } |
| if (SAFE_FOR_TEMPLATES) { |
| ALLOW_DATA_ATTR = false; |
| } |
| if (RETURN_DOM_FRAGMENT) { |
| RETURN_DOM = true; |
| } |
| /* Parse profile info */ |
| if (USE_PROFILES) { |
| ALLOWED_TAGS = addToSet({}, text); |
| ALLOWED_ATTR = []; |
| if (USE_PROFILES.html === true) { |
| addToSet(ALLOWED_TAGS, html$1); |
| addToSet(ALLOWED_ATTR, html); |
| } |
| if (USE_PROFILES.svg === true) { |
| addToSet(ALLOWED_TAGS, svg$1); |
| addToSet(ALLOWED_ATTR, svg); |
| addToSet(ALLOWED_ATTR, xml); |
| } |
| if (USE_PROFILES.svgFilters === true) { |
| addToSet(ALLOWED_TAGS, svgFilters); |
| addToSet(ALLOWED_ATTR, svg); |
| addToSet(ALLOWED_ATTR, xml); |
| } |
| if (USE_PROFILES.mathMl === true) { |
| addToSet(ALLOWED_TAGS, mathMl$1); |
| addToSet(ALLOWED_ATTR, mathMl); |
| addToSet(ALLOWED_ATTR, xml); |
| } |
| } |
| /* Merge configuration parameters */ |
| if (cfg.ADD_TAGS) { |
| if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) { |
| ALLOWED_TAGS = clone(ALLOWED_TAGS); |
| } |
| addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc); |
| } |
| if (cfg.ADD_ATTR) { |
| if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) { |
| ALLOWED_ATTR = clone(ALLOWED_ATTR); |
| } |
| addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc); |
| } |
| if (cfg.ADD_URI_SAFE_ATTR) { |
| addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc); |
| } |
| if (cfg.FORBID_CONTENTS) { |
| if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) { |
| FORBID_CONTENTS = clone(FORBID_CONTENTS); |
| } |
| addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc); |
| } |
| /* Add #text in case KEEP_CONTENT is set to true */ |
| if (KEEP_CONTENT) { |
| ALLOWED_TAGS['#text'] = true; |
| } |
| /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */ |
| if (WHOLE_DOCUMENT) { |
| addToSet(ALLOWED_TAGS, ['html', 'head', 'body']); |
| } |
| /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */ |
| if (ALLOWED_TAGS.table) { |
| addToSet(ALLOWED_TAGS, ['tbody']); |
| delete FORBID_TAGS.tbody; |
| } |
| if (cfg.TRUSTED_TYPES_POLICY) { |
| if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') { |
| throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.'); |
| } |
| if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') { |
| throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.'); |
| } |
| // Overwrite existing TrustedTypes policy. |
| trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; |
| // Sign local variables required by `sanitize`. |
| emptyHTML = trustedTypesPolicy.createHTML(''); |
| } else { |
| // Uninitialized policy, attempt to initialize the internal dompurify policy. |
| if (trustedTypesPolicy === undefined) { |
| trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript); |
| } |
| // If creating the internal policy succeeded sign internal variables. |
| if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') { |
| emptyHTML = trustedTypesPolicy.createHTML(''); |
| } |
| } |
| // Prevent further manipulation of configuration. |
| // Not available in IE8, Safari 5, etc. |
| if (freeze) { |
| freeze(cfg); |
| } |
| CONFIG = cfg; |
| }; |
| /* Keep track of all possible SVG and MathML tags |
| * so that we can perform the namespace checks |
| * correctly. */ |
| const ALL_SVG_TAGS = addToSet({}, [...svg$1, ...svgFilters, ...svgDisallowed]); |
| const ALL_MATHML_TAGS = addToSet({}, [...mathMl$1, ...mathMlDisallowed]); |
| /** |
| * @param element a DOM element whose namespace is being checked |
| * @returns Return false if the element has a |
| * namespace that a spec-compliant parser would never |
| * return. Return true otherwise. |
| */ |
| const _checkValidNamespace = function _checkValidNamespace(element) { |
| let parent = getParentNode(element); |
| // In JSDOM, if we're inside shadow DOM, then parentNode |
| // can be null. We just simulate parent in this case. |
| if (!parent || !parent.tagName) { |
| parent = { |
| namespaceURI: NAMESPACE, |
| tagName: 'template' |
| }; |
| } |
| const tagName = stringToLowerCase(element.tagName); |
| const parentTagName = stringToLowerCase(parent.tagName); |
| if (!ALLOWED_NAMESPACES[element.namespaceURI]) { |
| return false; |
| } |
| if (element.namespaceURI === SVG_NAMESPACE) { |
| // The only way to switch from HTML namespace to SVG |
| // is via <svg>. If it happens via any other tag, then |
| // it should be killed. |
| if (parent.namespaceURI === HTML_NAMESPACE) { |
| return tagName === 'svg'; |
| } |
| // The only way to switch from MathML to SVG is via` |
| // svg if parent is either <annotation-xml> or MathML |
| // text integration points. |
| if (parent.namespaceURI === MATHML_NAMESPACE) { |
| return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]); |
| } |
| // We only allow elements that are defined in SVG |
| // spec. All others are disallowed in SVG namespace. |
| return Boolean(ALL_SVG_TAGS[tagName]); |
| } |
| if (element.namespaceURI === MATHML_NAMESPACE) { |
| // The only way to switch from HTML namespace to MathML |
| // is via <math>. If it happens via any other tag, then |
| // it should be killed. |
| if (parent.namespaceURI === HTML_NAMESPACE) { |
| return tagName === 'math'; |
| } |
| // The only way to switch from SVG to MathML is via |
| // <math> and HTML integration points |
| if (parent.namespaceURI === SVG_NAMESPACE) { |
| return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName]; |
| } |
| // We only allow elements that are defined in MathML |
| // spec. All others are disallowed in MathML namespace. |
| return Boolean(ALL_MATHML_TAGS[tagName]); |
| } |
| if (element.namespaceURI === HTML_NAMESPACE) { |
| // The only way to switch from SVG to HTML is via |
| // HTML integration points, and from MathML to HTML |
| // is via MathML text integration points |
| if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) { |
| return false; |
| } |
| if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) { |
| return false; |
| } |
| // We disallow tags that are specific for MathML |
| // or SVG and should never appear in HTML namespace |
| return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]); |
| } |
| // For XHTML and XML documents that support custom namespaces |
| if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) { |
| return true; |
| } |
| // The code should never reach this place (this means |
| // that the element somehow got namespace that is not |
| // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES). |
| // Return false just in case. |
| return false; |
| }; |
| /** |
| * _forceRemove |
| * |
| * @param node a DOM node |
| */ |
| const _forceRemove = function _forceRemove(node) { |
| arrayPush(DOMPurify.removed, { |
| element: node |
| }); |
| try { |
| // eslint-disable-next-line unicorn/prefer-dom-node-remove |
| getParentNode(node).removeChild(node); |
| } catch (_) { |
| remove(node); |
| } |
| }; |
| /** |
| * _removeAttribute |
| * |
| * @param name an Attribute name |
| * @param element a DOM node |
| */ |
| const _removeAttribute = function _removeAttribute(name, element) { |
| try { |
| arrayPush(DOMPurify.removed, { |
| attribute: element.getAttributeNode(name), |
| from: element |
| }); |
| } catch (_) { |
| arrayPush(DOMPurify.removed, { |
| attribute: null, |
| from: element |
| }); |
| } |
| element.removeAttribute(name); |
| // We void attribute values for unremovable "is" attributes |
| if (name === 'is') { |
| if (RETURN_DOM || RETURN_DOM_FRAGMENT) { |
| try { |
| _forceRemove(element); |
| } catch (_) {} |
| } else { |
| try { |
| element.setAttribute(name, ''); |
| } catch (_) {} |
| } |
| } |
| }; |
| /** |
| * _initDocument |
| * |
| * @param dirty - a string of dirty markup |
| * @return a DOM, filled with the dirty markup |
| */ |
| const _initDocument = function _initDocument(dirty) { |
| /* Create a HTML document */ |
| let doc = null; |
| let leadingWhitespace = null; |
| if (FORCE_BODY) { |
| dirty = '<remove></remove>' + dirty; |
| } else { |
| /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */ |
| const matches = stringMatch(dirty, /^[\r\n\t ]+/); |
| leadingWhitespace = matches && matches[0]; |
| } |
| if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) { |
| // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict) |
| dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>'; |
| } |
| const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty; |
| /* |
| * Use the DOMParser API by default, fallback later if needs be |
| * DOMParser not work for svg when has multiple root element. |
| */ |
| if (NAMESPACE === HTML_NAMESPACE) { |
| try { |
| doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE); |
| } catch (_) {} |
| } |
| /* Use createHTMLDocument in case DOMParser is not available */ |
| if (!doc || !doc.documentElement) { |
| doc = implementation.createDocument(NAMESPACE, 'template', null); |
| try { |
| doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload; |
| } catch (_) { |
| // Syntax error if dirtyPayload is invalid xml |
| } |
| } |
| const body = doc.body || doc.documentElement; |
| if (dirty && leadingWhitespace) { |
| body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null); |
| } |
| /* Work on whole document or just its body */ |
| if (NAMESPACE === HTML_NAMESPACE) { |
| return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0]; |
| } |
| return WHOLE_DOCUMENT ? doc.documentElement : body; |
| }; |
| /** |
| * Creates a NodeIterator object that you can use to traverse filtered lists of nodes or elements in a document. |
| * |
| * @param root The root element or node to start traversing on. |
| * @return The created NodeIterator |
| */ |
| const _createNodeIterator = function _createNodeIterator(root) { |
| return createNodeIterator.call(root.ownerDocument || root, root, |
| // eslint-disable-next-line no-bitwise |
| NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT | NodeFilter.SHOW_PROCESSING_INSTRUCTION | NodeFilter.SHOW_CDATA_SECTION, null); |
| }; |
| /** |
| * _isClobbered |
| * |
| * @param element element to check for clobbering attacks |
| * @return true if clobbered, false if safe |
| */ |
| const _isClobbered = function _isClobbered(element) { |
| return element instanceof HTMLFormElement && (typeof element.nodeName !== 'string' || typeof element.textContent !== 'string' || typeof element.removeChild !== 'function' || !(element.attributes instanceof NamedNodeMap) || typeof element.removeAttribute !== 'function' || typeof element.setAttribute !== 'function' || typeof element.namespaceURI !== 'string' || typeof element.insertBefore !== 'function' || typeof element.hasChildNodes !== 'function'); |
| }; |
| /** |
| * Checks whether the given object is a DOM node. |
| * |
| * @param value object to check whether it's a DOM node |
| * @return true is object is a DOM node |
| */ |
| const _isNode = function _isNode(value) { |
| return typeof Node === 'function' && value instanceof Node; |
| }; |
| function _executeHooks(hooks, currentNode, data) { |
| arrayForEach(hooks, hook => { |
| hook.call(DOMPurify, currentNode, data, CONFIG); |
| }); |
| } |
| /** |
| * _sanitizeElements |
| * |
| * @protect nodeName |
| * @protect textContent |
| * @protect removeChild |
| * @param currentNode to check for permission to exist |
| * @return true if node was killed, false if left alive |
| */ |
| const _sanitizeElements = function _sanitizeElements(currentNode) { |
| let content = null; |
| /* Execute a hook if present */ |
| _executeHooks(hooks.beforeSanitizeElements, currentNode, null); |
| /* Check if element is clobbered or can clobber */ |
| if (_isClobbered(currentNode)) { |
| _forceRemove(currentNode); |
| return true; |
| } |
| /* Now let's check the element's type and name */ |
| const tagName = transformCaseFunc(currentNode.nodeName); |
| /* Execute a hook if present */ |
| _executeHooks(hooks.uponSanitizeElement, currentNode, { |
| tagName, |
| allowedTags: ALLOWED_TAGS |
| }); |
| /* Detect mXSS attempts abusing namespace confusion */ |
| if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) { |
| _forceRemove(currentNode); |
| return true; |
| } |
| /* Remove any occurrence of processing instructions */ |
| if (currentNode.nodeType === NODE_TYPE.progressingInstruction) { |
| _forceRemove(currentNode); |
| return true; |
| } |
| /* Remove any kind of possibly harmful comments */ |
| if (SAFE_FOR_XML && currentNode.nodeType === NODE_TYPE.comment && regExpTest(/<[/\w]/g, currentNode.data)) { |
| _forceRemove(currentNode); |
| return true; |
| } |
| /* Remove element if anything forbids its presence */ |
| if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { |
| /* Check if we have a custom element to handle */ |
| if (!FORBID_TAGS[tagName] && _isBasicCustomElement(tagName)) { |
| if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) { |
| return false; |
| } |
| if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) { |
| return false; |
| } |
| } |
| /* Keep content except for bad-listed elements */ |
| if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) { |
| const parentNode = getParentNode(currentNode) || currentNode.parentNode; |
| const childNodes = getChildNodes(currentNode) || currentNode.childNodes; |
| if (childNodes && parentNode) { |
| const childCount = childNodes.length; |
| for (let i = childCount - 1; i >= 0; --i) { |
| const childClone = cloneNode(childNodes[i], true); |
| childClone.__removalCount = (currentNode.__removalCount || 0) + 1; |
| parentNode.insertBefore(childClone, getNextSibling(currentNode)); |
| } |
| } |
| } |
| _forceRemove(currentNode); |
| return true; |
| } |
| /* Check whether element has a valid namespace */ |
| if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) { |
| _forceRemove(currentNode); |
| return true; |
| } |
| /* Make sure that older browsers don't get fallback-tag mXSS */ |
| if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) { |
| _forceRemove(currentNode); |
| return true; |
| } |
| /* Sanitize element content to be template-safe */ |
| if (SAFE_FOR_TEMPLATES && currentNode.nodeType === NODE_TYPE.text) { |
| /* Get the element's text content */ |
| content = currentNode.textContent; |
| arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { |
| content = stringReplace(content, expr, ' '); |
| }); |
| if (currentNode.textContent !== content) { |
| arrayPush(DOMPurify.removed, { |
| element: currentNode.cloneNode() |
| }); |
| currentNode.textContent = content; |
| } |
| } |
| /* Execute a hook if present */ |
| _executeHooks(hooks.afterSanitizeElements, currentNode, null); |
| return false; |
| }; |
| /** |
| * _isValidAttribute |
| * |
| * @param lcTag Lowercase tag name of containing element. |
| * @param lcName Lowercase attribute name. |
| * @param value Attribute value. |
| * @return Returns true if `value` is valid, otherwise false. |
| */ |
| // eslint-disable-next-line complexity |
| const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) { |
| /* Make sure attribute cannot clobber */ |
| if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) { |
| return false; |
| } |
| /* Allow valid data-* attributes: At least one character after "-" |
| (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes) |
| XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804) |
| We don't need to check the value; it's always URI safe. */ |
| if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) { |
| if ( |
| // First condition does a very basic check if a) it's basically a valid custom element tagname AND |
| // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck |
| // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck |
| _isBasicCustomElement(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)) || |
| // Alternative, second condition checks if it's an `is`-attribute, AND |
| // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck |
| lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else { |
| return false; |
| } |
| /* Check value is safe. First, is attr inert? If so, is safe */ |
| } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) { |
| return false; |
| } else ; |
| return true; |
| }; |
| /** |
| * _isBasicCustomElement |
| * checks if at least one dash is included in tagName, and it's not the first char |
| * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name |
| * |
| * @param tagName name of the tag of the node to sanitize |
| * @returns Returns true if the tag name meets the basic criteria for a custom element, otherwise false. |
| */ |
| const _isBasicCustomElement = function _isBasicCustomElement(tagName) { |
| return tagName !== 'annotation-xml' && stringMatch(tagName, CUSTOM_ELEMENT); |
| }; |
| /** |
| * _sanitizeAttributes |
| * |
| * @protect attributes |
| * @protect nodeName |
| * @protect removeAttribute |
| * @protect setAttribute |
| * |
| * @param currentNode to sanitize |
| */ |
| const _sanitizeAttributes = function _sanitizeAttributes(currentNode) { |
| /* Execute a hook if present */ |
| _executeHooks(hooks.beforeSanitizeAttributes, currentNode, null); |
| const { |
| attributes |
| } = currentNode; |
| /* Check if we have attributes; if not we might have a text node */ |
| if (!attributes || _isClobbered(currentNode)) { |
| return; |
| } |
| const hookEvent = { |
| attrName: '', |
| attrValue: '', |
| keepAttr: true, |
| allowedAttributes: ALLOWED_ATTR, |
| forceKeepAttr: undefined |
| }; |
| let l = attributes.length; |
| /* Go backwards over all attributes; safely remove bad ones */ |
| while (l--) { |
| const attr = attributes[l]; |
| const { |
| name, |
| namespaceURI, |
| value: attrValue |
| } = attr; |
| const lcName = transformCaseFunc(name); |
| let value = name === 'value' ? attrValue : stringTrim(attrValue); |
| /* Execute a hook if present */ |
| hookEvent.attrName = lcName; |
| hookEvent.attrValue = value; |
| hookEvent.keepAttr = true; |
| hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set |
| _executeHooks(hooks.uponSanitizeAttribute, currentNode, hookEvent); |
| value = hookEvent.attrValue; |
| /* Full DOM Clobbering protection via namespace isolation, |
| * Prefix id and name attributes with `user-content-` |
| */ |
| if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) { |
| // Remove the attribute with this value |
| _removeAttribute(name, currentNode); |
| // Prefix the value and later re-create the attribute with the sanitized value |
| value = SANITIZE_NAMED_PROPS_PREFIX + value; |
| } |
| /* Work around a security issue with comments inside attributes */ |
| if (SAFE_FOR_XML && regExpTest(/((--!?|])>)|<\/(style|title)/i, value)) { |
| _removeAttribute(name, currentNode); |
| continue; |
| } |
| /* Did the hooks approve of the attribute? */ |
| if (hookEvent.forceKeepAttr) { |
| continue; |
| } |
| /* Remove attribute */ |
| _removeAttribute(name, currentNode); |
| /* Did the hooks approve of the attribute? */ |
| if (!hookEvent.keepAttr) { |
| continue; |
| } |
| /* Work around a security issue in jQuery 3.0 */ |
| if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) { |
| _removeAttribute(name, currentNode); |
| continue; |
| } |
| /* Sanitize attribute content to be template-safe */ |
| if (SAFE_FOR_TEMPLATES) { |
| arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { |
| value = stringReplace(value, expr, ' '); |
| }); |
| } |
| /* Is `value` valid for this attribute? */ |
| const lcTag = transformCaseFunc(currentNode.nodeName); |
| if (!_isValidAttribute(lcTag, lcName, value)) { |
| continue; |
| } |
| /* Handle attributes that require Trusted Types */ |
| if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') { |
| if (namespaceURI) ; else { |
| switch (trustedTypes.getAttributeType(lcTag, lcName)) { |
| case 'TrustedHTML': |
| { |
| value = trustedTypesPolicy.createHTML(value); |
| break; |
| } |
| case 'TrustedScriptURL': |
| { |
| value = trustedTypesPolicy.createScriptURL(value); |
| break; |
| } |
| } |
| } |
| } |
| /* Handle invalid data-* attribute set by try-catching it */ |
| try { |
| if (namespaceURI) { |
| currentNode.setAttributeNS(namespaceURI, name, value); |
| } else { |
| /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */ |
| currentNode.setAttribute(name, value); |
| } |
| if (_isClobbered(currentNode)) { |
| _forceRemove(currentNode); |
| } else { |
| arrayPop(DOMPurify.removed); |
| } |
| } catch (_) {} |
| } |
| /* Execute a hook if present */ |
| _executeHooks(hooks.afterSanitizeAttributes, currentNode, null); |
| }; |
| /** |
| * _sanitizeShadowDOM |
| * |
| * @param fragment to iterate over recursively |
| */ |
| const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) { |
| let shadowNode = null; |
| const shadowIterator = _createNodeIterator(fragment); |
| /* Execute a hook if present */ |
| _executeHooks(hooks.beforeSanitizeShadowDOM, fragment, null); |
| while (shadowNode = shadowIterator.nextNode()) { |
| /* Execute a hook if present */ |
| _executeHooks(hooks.uponSanitizeShadowNode, shadowNode, null); |
| /* Sanitize tags and elements */ |
| _sanitizeElements(shadowNode); |
| /* Check attributes next */ |
| _sanitizeAttributes(shadowNode); |
| /* Deep shadow DOM detected */ |
| if (shadowNode.content instanceof DocumentFragment) { |
| _sanitizeShadowDOM(shadowNode.content); |
| } |
| } |
| /* Execute a hook if present */ |
| _executeHooks(hooks.afterSanitizeShadowDOM, fragment, null); |
| }; |
| // eslint-disable-next-line complexity |
| DOMPurify.sanitize = function (dirty) { |
| let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; |
| let body = null; |
| let importedNode = null; |
| let currentNode = null; |
| let returnNode = null; |
| /* Make sure we have a string to sanitize. |
| DO NOT return early, as this will return the wrong type if |
| the user has requested a DOM object rather than a string */ |
| IS_EMPTY_INPUT = !dirty; |
| if (IS_EMPTY_INPUT) { |
| dirty = '<!-->'; |
| } |
| /* Stringify, in case dirty is an object */ |
| if (typeof dirty !== 'string' && !_isNode(dirty)) { |
| if (typeof dirty.toString === 'function') { |
| dirty = dirty.toString(); |
| if (typeof dirty !== 'string') { |
| throw typeErrorCreate('dirty is not a string, aborting'); |
| } |
| } else { |
| throw typeErrorCreate('toString is not a function'); |
| } |
| } |
| /* Return dirty HTML if DOMPurify cannot run */ |
| if (!DOMPurify.isSupported) { |
| return dirty; |
| } |
| /* Assign config vars */ |
| if (!SET_CONFIG) { |
| _parseConfig(cfg); |
| } |
| /* Clean up removed elements */ |
| DOMPurify.removed = []; |
| /* Check if dirty is correctly typed for IN_PLACE */ |
| if (typeof dirty === 'string') { |
| IN_PLACE = false; |
| } |
| if (IN_PLACE) { |
| /* Do some early pre-sanitization to avoid unsafe root nodes */ |
| if (dirty.nodeName) { |
| const tagName = transformCaseFunc(dirty.nodeName); |
| if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) { |
| throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place'); |
| } |
| } |
| } else if (dirty instanceof Node) { |
| /* If dirty is a DOM element, append to an empty document to avoid |
| elements being stripped by the parser */ |
| body = _initDocument('<!---->'); |
| importedNode = body.ownerDocument.importNode(dirty, true); |
| if (importedNode.nodeType === NODE_TYPE.element && importedNode.nodeName === 'BODY') { |
| /* Node is already a body, use as is */ |
| body = importedNode; |
| } else if (importedNode.nodeName === 'HTML') { |
| body = importedNode; |
| } else { |
| // eslint-disable-next-line unicorn/prefer-dom-node-append |
| body.appendChild(importedNode); |
| } |
| } else { |
| /* Exit directly if we have nothing to do */ |
| if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && |
| // eslint-disable-next-line unicorn/prefer-includes |
| dirty.indexOf('<') === -1) { |
| return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty; |
| } |
| /* Initialize the document to work on */ |
| body = _initDocument(dirty); |
| /* Check we have a DOM node from the data */ |
| if (!body) { |
| return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : ''; |
| } |
| } |
| /* Remove first element node (ours) if FORCE_BODY is set */ |
| if (body && FORCE_BODY) { |
| _forceRemove(body.firstChild); |
| } |
| /* Get node iterator */ |
| const nodeIterator = _createNodeIterator(IN_PLACE ? dirty : body); |
| /* Now start iterating over the created document */ |
| while (currentNode = nodeIterator.nextNode()) { |
| /* Sanitize tags and elements */ |
| _sanitizeElements(currentNode); |
| /* Check attributes next */ |
| _sanitizeAttributes(currentNode); |
| /* Shadow DOM detected, sanitize it */ |
| if (currentNode.content instanceof DocumentFragment) { |
| _sanitizeShadowDOM(currentNode.content); |
| } |
| } |
| /* If we sanitized `dirty` in-place, return it. */ |
| if (IN_PLACE) { |
| return dirty; |
| } |
| /* Return sanitized string or DOM */ |
| if (RETURN_DOM) { |
| if (RETURN_DOM_FRAGMENT) { |
| returnNode = createDocumentFragment.call(body.ownerDocument); |
| while (body.firstChild) { |
| // eslint-disable-next-line unicorn/prefer-dom-node-append |
| returnNode.appendChild(body.firstChild); |
| } |
| } else { |
| returnNode = body; |
| } |
| if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) { |
| /* |
| AdoptNode() is not used because internal state is not reset |
| (e.g. the past names map of a HTMLFormElement), this is safe |
| in theory but we would rather not risk another attack vector. |
| The state that is cloned by importNode() is explicitly defined |
| by the specs. |
| */ |
| returnNode = importNode.call(originalDocument, returnNode, true); |
| } |
| return returnNode; |
| } |
| let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML; |
| /* Serialize doctype if allowed */ |
| if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) { |
| serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML; |
| } |
| /* Sanitize final string template-safe */ |
| if (SAFE_FOR_TEMPLATES) { |
| arrayForEach([MUSTACHE_EXPR, ERB_EXPR, TMPLIT_EXPR], expr => { |
| serializedHTML = stringReplace(serializedHTML, expr, ' '); |
| }); |
| } |
| return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML; |
| }; |
| DOMPurify.setConfig = function () { |
| let cfg = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; |
| _parseConfig(cfg); |
| SET_CONFIG = true; |
| }; |
| DOMPurify.clearConfig = function () { |
| CONFIG = null; |
| SET_CONFIG = false; |
| }; |
| DOMPurify.isValidAttribute = function (tag, attr, value) { |
| /* Initialize shared config vars if necessary. */ |
| if (!CONFIG) { |
| _parseConfig({}); |
| } |
| const lcTag = transformCaseFunc(tag); |
| const lcName = transformCaseFunc(attr); |
| return _isValidAttribute(lcTag, lcName, value); |
| }; |
| DOMPurify.addHook = function (entryPoint, hookFunction) { |
| if (typeof hookFunction !== 'function') { |
| return; |
| } |
| arrayPush(hooks[entryPoint], hookFunction); |
| }; |
| DOMPurify.removeHook = function (entryPoint, hookFunction) { |
| if (hookFunction !== undefined) { |
| const index = arrayLastIndexOf(hooks[entryPoint], hookFunction); |
| return index === -1 ? undefined : arraySplice(hooks[entryPoint], index, 1)[0]; |
| } |
| return arrayPop(hooks[entryPoint]); |
| }; |
| DOMPurify.removeHooks = function (entryPoint) { |
| hooks[entryPoint] = []; |
| }; |
| DOMPurify.removeAllHooks = function () { |
| hooks = _createHooksMap(); |
| }; |
| return DOMPurify; |
| } |
| var purify = createDOMPurify(); |
| |
| return purify; |
| |
| })); |
| //# sourceMappingURL=purify.js.map |
