From ceff4034afc00c173bd49a38397611bb1c3fc59c Mon Sep 17 00:00:00 2001
From: Maxim Matyunin <matyunya@gmail.com>
Date: Wed, 3 Jul 2019 18:05:21 +0900
Subject: [PATCH] 3165 fix out transition

---
 src/runtime/internal/transitions.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/runtime/internal/transitions.ts b/src/runtime/internal/transitions.ts
index bbb24ba9ee..ce1d045e08 100644
--- a/src/runtime/internal/transitions.ts
+++ b/src/runtime/internal/transitions.ts
@@ -48,7 +48,7 @@ export function transition_in(block, local?: 0 | 1) {
 
 export function transition_out(block, local: 0 | 1, callback) {
 	if (block && block.o) {
-		if (outroing.has(block)) return;
+		if (outroing.has(block) || !outros.callbacks) return;
 		outroing.add(block);
 
 		outros.callbacks.push(() => {