Function createDOMPurify

src/purify.ts:230–3277

(window: WindowLike = getGlobal())

};

function createDOMPurify(window: WindowLike = getGlobal()): DOMPurify {
  const DOMPurify: DOMPurify = (root: WindowLike) => createDOMPurify(root);

  DOMPurify.version = VERSION;

  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: HTMLScriptElement =
    originalDocument.currentScript as HTMLScriptElement;
  const {
    DocumentFragment,
    HTMLTemplateElement,
    Node,
    Element,
    NodeFilter,
    NamedNodeMap = window.NamedNodeMap || (window as any).MozNamedAttrMap,
    HTMLFormElement,
    DOMParser,
    trustedTypes,
  } = window;

  const ElementPrototype = Element.prototype;

  const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
  const remove = lookupGetter(ElementPrototype, 'remove');
  // Clobber-safe Attr-node removal. On an HTMLFormElement a descendant named
  // "removeAttributeNode" shadows the prototype method via
  // [LegacyOverrideBuiltIns], so element.removeAttributeNode(attr) throws.
  // Calling the cached Element.prototype method with the element as the
  // receiver removes the exact live Attr node regardless of the shadowing.
  const removeAttributeNode = lookupGetter(
    ElementPrototype,
    'removeAttributeNode'
  );
  const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
  const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
  const getParentNode = lookupGetter(ElementPrototype, 'parentNode');
  const getShadowRoot = lookupGetter(ElementPrototype, 'shadowRoot');
  const getAttributes = lookupGetter(ElementPrototype, 'attributes');
  const getNodeType =
    Node && Node.prototype ? lookupGetter(Node.prototype, 'nodeType') : null;
  const getNodeName =