From c11093fa71bc8d1623ac86ed540a17ce00e86666 Mon Sep 17 00:00:00 2001
From: Sidharth Vinod <sidharthv96@gmail.com>
Date: Fri, 19 Jan 2024 13:49:10 +0530
Subject: [PATCH] Update packages/mermaid/src/diagrams/flowchart/flowDb.ts

Co-authored-by: Alois Klink <alois@aloisklink.com>
---
 packages/mermaid/src/diagrams/flowchart/flowDb.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/mermaid/src/diagrams/flowchart/flowDb.ts b/packages/mermaid/src/diagrams/flowchart/flowDb.ts
index 54152c7ac..8a596209e 100644
--- a/packages/mermaid/src/diagrams/flowchart/flowDb.ts
+++ b/packages/mermaid/src/diagrams/flowchart/flowDb.ts
@@ -270,7 +270,7 @@ export const setClass = function (ids: string, className: string) {
 };
 
 const setTooltip = function (ids: string, tooltip: string) {
-  if (!tooltip) {
+  if (tooltip === undefined) {
     return;
   }
   tooltip = sanitizeText(tooltip);