Initial

src/HTMLNormalizer/strategies/common.ts

+const DUMMY_QR_CODE_ID = "dummyQrCode";
+
+export const ELEMENT_TYPES_TO_REMOVE = { br: true, hr: true };
+
+export const ATTRIBUTES_TO_KEEP = {
+  alt: true,
+  src: true,
+  cite: true,
+  data: true,
+  datetime: true,
+  href: true,
+  value: true,
+};
+
+/**
+ * Removes dummy QR code from HTML
+ * @param element
+ */
+const isDummyQrCode = (element: HTMLElement): boolean => {
+  if (element.id === DUMMY_QR_CODE_ID) {
+    return true;
+  }
+};
+
+/**
+ * Decides whether node should be removed
+ * @param element
+ */
+export const pruneElement = (element: HTMLElement): boolean => {
+  if (isDummyQrCode(element)) {
+    return true;
+  }
+
+  return !!ELEMENT_TYPES_TO_REMOVE[element.nodeName.toLowerCase()];
+};
+
+export const cloneAnchorFromPane = (a: HTMLAnchorElement, pane: HTMLElement): void => {
+  try {
+    const url = new URL(a.href);
+    // If this is external url
+    if (url.host && url.protocol) {
+      pane.parentNode.insertBefore(a.cloneNode(false), pane);
+    }
+  } catch {
+    return;
+  }
+};