fix: check is attribute set

application/source/dom/updater.mjs

@@ -291,6 +291,7 @@ function retrieveAndSetValue(element) {
     const pathfinder = new Pathfinder(self[internalSymbol].subject.getSubject());
 
     let path = element.getAttribute(ATTRIBUTE_UPDATER_BIND);
+    if (path === null) throw new Error("the bind argument must start as a value with a path");
 
     if (path.indexOf("path:") !== 0) {
         throw new Error("the bind argument must start as a value with a path");
@@ -434,6 +435,8 @@ function insertElement(change) {
                 found = true;
 
                 const attributes = containerElement.getAttribute(ATTRIBUTE_UPDATER_INSERT);
+                if (attributes === null) continue;
+                
                 let def = trimSpaces(attributes);
                 let i = def.indexOf(" ");
                 let key = trimSpaces(def.substr(0, i));
@@ -489,6 +492,7 @@ function insertElement(change) {
                 let nodes = containerElement.querySelectorAll(
                     `[${ATTRIBUTE_UPDATER_INSERT_REFERENCE}*="${refPrefix}"]`,
                 );
+                
                 for (const [, node] of Object.entries(nodes)) {
                     if (!available.has(node.getAttribute(ATTRIBUTE_UPDATER_INSERT_REFERENCE))) {
                         try {