From 2d99a49de1ff912ce72581c0390d4c26f5f02f44 Mon Sep 17 00:00:00 2001
From: Tim Branyen <tim@tabdeveloper.com>
Date: Thu, 22 Apr 2021 20:41:43 -0700
Subject: [PATCH] For browsers/runtimes that do not support MutationObserver,
 always mark dirty

---
 packages/diffhtml/lib/transaction.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/packages/diffhtml/lib/transaction.js b/packages/diffhtml/lib/transaction.js
index 2433ce92..b55cba64 100644
--- a/packages/diffhtml/lib/transaction.js
+++ b/packages/diffhtml/lib/transaction.js
@@ -224,6 +224,11 @@ export default class Transaction {
         characterData: true,
       });
     }
+    // If there is no MutationObserver, then the DOM is dirty by default and
+    // rescanned every time.
+    else {
+      state.isDirty = true;
+    }
 
     // Execute all queued scripts.
     scriptsToExecute.forEach((type = EMPTY.STR, vTree) => {