"Rework normalisation logic to handle new seal templates"

Closes #2 (closed)

dist/HTMLNormalizer/strategies/common.js

@@ -18,7 +18,10 @@ exports.ATTRIBUTES_TO_KEEP = {
     href: true,
     value: true,
 };
-const normalizeDocumentCommon = (body) => {
+const normalizeDocumentCommon = (body, sealContainerId) => {
+    if (sealContainerId) {
+        removeSeal(body, sealContainerId);
+    }
     /**
      * Unwind Outlook safelink wrappers
      */
@@ -50,6 +53,20 @@ const normalizeDocumentCommon = (body) => {
     }
 };
 exports.normalizeDocumentCommon = normalizeDocumentCommon;
+const removeSeal = (rootNode, sealContainerId) => {
+    const queue = [rootNode];
+    while (queue.length) {
+        const element = queue.shift();
+        const id = element.getAttribute("id");
+        if (id?.includes(sealContainerId)) {
+            element.parentNode.removeChild(element);
+            break;
+        }
+        for (const node of element.childNodes) {
+            node.nodeType === 1 && queue.push(node);
+        }
+    }
+};
 /**
  * Decides whether node should be removed
  * @param element