From 0d6386198a7e4c488409b57b713fa35ce12e44b2 Mon Sep 17 00:00:00 2001
From: Patrick Steele-Idem <pnidem@gmail.com>
Date: Mon, 18 Jan 2016 20:13:56 -0700
Subject: [PATCH] Marko v3: Proper error message for unmatched nested tag

---
 compiler/ast/CustomTag.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler/ast/CustomTag.js b/compiler/ast/CustomTag.js
index a78ca2bb4..e9374f526 100644
--- a/compiler/ast/CustomTag.js
+++ b/compiler/ast/CustomTag.js
@@ -127,6 +127,10 @@ class CustomTag extends HtmlElement {
 
         if (isNestedTag) {
             let parentTagNode = getNestedTagParentNode(this, parentTagName);
+            if (!parentTagNode) {
+                codegen.addError('Invalid usage of the <' + this.tagName + '> nested tag. Tag not nested within a <' + parentTagName + '> tag.');
+                return;
+            }
             parentTagVar = parentTagNode.data.nestedTagVar;
         }