From a2629bf8303c8b8a76e9626c1b45e91bc9b3795e Mon Sep 17 00:00:00 2001
From: Application-drop-up <msts.oo0131@gmail.com>
Date: Tue, 1 Sep 2026 08:01:14 +0900
Subject: [PATCH] fix: set aria-describedby when overlay is a falsy but valid
 node

overlay values like 0 are valid renderable content, but the previous
`overlay && open` check treated them as absent and skipped
aria-describedby even while the tooltip was visible.
---
 src/Tooltip.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Tooltip.tsx b/src/Tooltip.tsx
index ac1ea87..fc67dcb 100644
--- a/src/Tooltip.tsx
+++ b/src/Tooltip.tsx
@@ -121,7 +121,7 @@ const Tooltip = React.forwardRef<TooltipRef, TooltipProps>((props, ref) => {
   const getChildren: TriggerProps['children'] = ({ open }) => {
     const child = React.Children.only(children);
     const childAriaDescribedBy = (child.props as React.AriaAttributes)['aria-describedby'];
-    const ariaDescribedBy = [childAriaDescribedBy, overlay && open ? mergedId : undefined]
+    const ariaDescribedBy = [childAriaDescribedBy, overlay != null && open ? mergedId : undefined]
       .filter(Boolean)
       .join(' ');
     const ariaProps: React.AriaAttributes = {