fix: check parentNode exists before removing child

src/runtime/internal/dom.ts

@@ -203,8 +203,10 @@ export function insert_hydration(target: NodeEx, node: NodeEx, anchor?: NodeEx)
 }
 
 export function detach(node: Node) {
+	if (node.parentNode){
 		node.parentNode.removeChild(node);
 	}
+}
 
 export function destroy_each(iterations, detaching) {
 	for (let i = 0; i < iterations.length; i += 1) {