From ad6c76116dbe4a9a4d40f69bba3a54ce556dfb53 Mon Sep 17 00:00:00 2001
From: Matheus B <matheus_ob59@hotmail.com>
Date: Mon, 20 Nov 2023 19:13:34 -0300
Subject: [PATCH] Modify getSubGraphTitleMargins to use null coalescing
 operator

---
 packages/mermaid/src/utils/getSubGraphTitleMargins.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/mermaid/src/utils/getSubGraphTitleMargins.ts b/packages/mermaid/src/utils/getSubGraphTitleMargins.ts
index 35dcaee95..64d2e1850 100644
--- a/packages/mermaid/src/utils/getSubGraphTitleMargins.ts
+++ b/packages/mermaid/src/utils/getSubGraphTitleMargins.ts
@@ -5,8 +5,9 @@ export const getSubGraphTitleMargins = (): {
   subGraphTitleBottomMargin: number;
   subGraphTitleTotalMargin: number;
 } => {
-  const subGraphTitleTopMargin = getConfig().flowchart?.subGraphTitleMargin?.top || 0;
-  const subGraphTitleBottomMargin = getConfig().flowchart?.subGraphTitleMargin?.bottom || 0;
+  const { flowchart } = getConfig();
+  const subGraphTitleTopMargin = flowchart?.subGraphTitleMargin?.top ?? 0;
+  const subGraphTitleBottomMargin = flowchart?.subGraphTitleMargin?.bottom ?? 0;
   const subGraphTitleTotalMargin = subGraphTitleTopMargin + subGraphTitleBottomMargin;
 
   return {