From 930345d3f0246e62e7da32e9f03ae0146189cd4d Mon Sep 17 00:00:00 2001
From: skie1997 <skie1997@outlook.com>
Date: Wed, 21 Jan 2026 19:35:11 +0800
Subject: [PATCH 1/3] fix: add protect code of tooltip handler

---
 packages/vchart/src/component/tooltip/tooltip.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/vchart/src/component/tooltip/tooltip.ts b/packages/vchart/src/component/tooltip/tooltip.ts
index c781069792..b90120e34b 100644
--- a/packages/vchart/src/component/tooltip/tooltip.ts
+++ b/packages/vchart/src/component/tooltip/tooltip.ts
@@ -68,7 +68,7 @@ export class Tooltip extends BaseComponent<any> implements ITooltip {
    * 是否正在浏览tooltip内容
    */
   private _isEnterTooltip: boolean;
-  protected declare _spec: ITooltipSpec;
+  declare protected _spec: ITooltipSpec;
 
   tooltipHandler?: ITooltipHandler;
 
@@ -175,7 +175,7 @@ export class Tooltip extends BaseComponent<any> implements ITooltip {
       return;
     }
 
-    const container = this.tooltipHandler.getRootDom?.();
+    const container = this.tooltipHandler?.getRootDom?.();
 
     if (container) {
       container.addEventListener('pointerenter', () => {
@@ -608,7 +608,7 @@ export class Tooltip extends BaseComponent<any> implements ITooltip {
 
     // 隐藏 tooltip
     const handler = this._spec.handler ?? this.tooltipHandler;
-    if (handler.hideTooltip) {
+    if (handler?.hideTooltip) {
       const result = handler.hideTooltip.call(handler, params);
       if (!result) {
         this._isTooltipShown = false;
@@ -630,7 +630,7 @@ export class Tooltip extends BaseComponent<any> implements ITooltip {
       }
       this._enterable = newEnterable;
 
-      this.tooltipHandler.reInit?.();
+      this.tooltipHandler?.reInit?.();
     } else {
       this._initHandler();
     }

From 1fdb2eb50ded0f2c74ac415ae759adacd354ef75 Mon Sep 17 00:00:00 2001
From: skie1997 <skie1997@outlook.com>
Date: Wed, 21 Jan 2026 20:12:30 +0800
Subject: [PATCH 2/3] fix: format problem

---
 packages/vchart/src/component/tooltip/tooltip.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/vchart/src/component/tooltip/tooltip.ts b/packages/vchart/src/component/tooltip/tooltip.ts
index b90120e34b..0171e21b73 100644
--- a/packages/vchart/src/component/tooltip/tooltip.ts
+++ b/packages/vchart/src/component/tooltip/tooltip.ts
@@ -608,6 +608,7 @@ export class Tooltip extends BaseComponent<any> implements ITooltip {
 
     // 隐藏 tooltip
     const handler = this._spec.handler ?? this.tooltipHandler;
+    // 防止用户自定义 handler 时，未实现 hideTooltip 方法
     if (handler?.hideTooltip) {
       const result = handler.hideTooltip.call(handler, params);
       if (!result) {

From 60afa3d6938af7f248267aad0b9d24b9a533a402 Mon Sep 17 00:00:00 2001
From: skie1997 <skie1997@outlook.com>
Date: Wed, 21 Jan 2026 20:17:43 +0800
Subject: [PATCH 3/3] fix: format problem

---
 packages/vchart/src/component/tooltip/tooltip.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/vchart/src/component/tooltip/tooltip.ts b/packages/vchart/src/component/tooltip/tooltip.ts
index 0171e21b73..80328ae9cd 100644
--- a/packages/vchart/src/component/tooltip/tooltip.ts
+++ b/packages/vchart/src/component/tooltip/tooltip.ts
@@ -68,7 +68,7 @@ export class Tooltip extends BaseComponent<any> implements ITooltip {
    * 是否正在浏览tooltip内容
    */
   private _isEnterTooltip: boolean;
-  declare protected _spec: ITooltipSpec;
+  protected declare _spec: ITooltipSpec;
 
   tooltipHandler?: ITooltipHandler;