From 4251bad63bd668bda1c18529dbbc9c0557fd080f Mon Sep 17 00:00:00 2001
From: takashi-kasajima <kaserj1119@gmail.com>
Date: Sat, 20 Sep 2025 22:00:54 +0900
Subject: [PATCH] fix: pass an index in handleAddValueAdd

---
 .../src/blocks/controls/react-editable-json-tree/JsonNodes.tsx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/code/addons/docs/src/blocks/controls/react-editable-json-tree/JsonNodes.tsx b/code/addons/docs/src/blocks/controls/react-editable-json-tree/JsonNodes.tsx
index 58efa33928d5..b1e53d918459 100644
--- a/code/addons/docs/src/blocks/controls/react-editable-json-tree/JsonNodes.tsx
+++ b/code/addons/docs/src/blocks/controls/react-editable-json-tree/JsonNodes.tsx
@@ -247,9 +247,10 @@ export class JsonArray extends Component<JsonArrayProps, JsonArrayState> {
     };
   }
 
-  handleAddValueAdd({ key, newValue }: any) {
+  handleAddValueAdd({ newValue }: any) {
     const { data, keyPath = [], nextDeep: deep } = this.state;
     const { beforeAddAction, logger } = this.props;
+    const key = data.length;
 
     (beforeAddAction || Promise.resolve.bind(Promise))(key, keyPath, deep, newValue)
       .then(() => {