From ab5b26e59debe292413a6ef8b6f7bd3829d1e5a3 Mon Sep 17 00:00:00 2001
From: pushkin <mtrelis@outlook.com>
Date: Sun, 5 Apr 2020 16:44:37 +0200
Subject: [PATCH] if_block exists check missing in block.p

#4629 fix
---
 src/compiler/compile/render_dom/wrappers/IfBlock.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/compiler/compile/render_dom/wrappers/IfBlock.ts b/src/compiler/compile/render_dom/wrappers/IfBlock.ts
index 207e1e349e..4dcbb43a39 100644
--- a/src/compiler/compile/render_dom/wrappers/IfBlock.ts
+++ b/src/compiler/compile/render_dom/wrappers/IfBlock.ts
@@ -334,7 +334,11 @@ export default class IfBlockWrapper extends Wrapper {
 				`);
 			}
 		} else if (dynamic) {
-			block.chunks.update.push(b`${name}.p(#ctx, #dirty);`);
+			if (if_exists_condition) {
+				block.chunks.update.push(b`if (${if_exists_condition}) ${name}.p(#ctx, #dirty);`);
+			} else {
+				block.chunks.update.push(b`${name}.p(#ctx, #dirty);`);
+			}
 		}
 
 		if (if_exists_condition) {