From 77c10d14c9733819762d057407899efd6794af17 Mon Sep 17 00:00:00 2001
From: Lucien Greathouse <me@lpghatguy.com>
Date: Wed, 2 Jan 2019 14:19:41 -0800
Subject: [PATCH] Support changing instance ClassName

---
 plugin/src/Session.lua | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/plugin/src/Session.lua b/plugin/src/Session.lua
index 3e4f6b5b..7d82c659 100644
--- a/plugin/src/Session.lua
+++ b/plugin/src/Session.lua
@@ -100,7 +100,13 @@ end
 local function reconcile(instanceData, instanceMap, instanceMetadataMap, id, existingInstance)
 	local data = instanceData[id]
 
-	assert(data.ClassName == existingInstance.ClassName)
+	if data.ClassName ~= existingInstance.ClassName then
+		-- TODO: Preserve existing children instead?
+		local parent = existingInstance.Parent
+		instanceMap:destroyId(id)
+		reify(instanceData, instanceMap, instanceMetadataMap, id, parent)
+		return
+	end
 
 	for key, value in pairs(data.Properties) do
 		setProperty(existingInstance, key, value.Value)