From 24d76b42495cdf3bf5a64b5f7eb60d7eaf64989f Mon Sep 17 00:00:00 2001
From: Nitish Agarwal <1592163+nitishagar@users.noreply.github.com>
Date: Tue, 12 May 2026 08:54:25 +0530
Subject: [PATCH] fix(sunburst): remove label text outline in dark theme
 (#39774)

---
 .../src/Sunburst/transformProps.ts            |  2 -
 .../test/Sunburst/transformProps.test.ts      | 53 +++++++++++++++++++
 2 files changed, 53 insertions(+), 2 deletions(-)
 create mode 100644 superset-frontend/plugins/plugin-chart-echarts/test/Sunburst/transformProps.test.ts

diff --git a/superset-frontend/plugins/plugin-chart-echarts/src/Sunburst/transformProps.ts b/superset-frontend/plugins/plugin-chart-echarts/src/Sunburst/transformProps.ts
index 9104518625d..8ffde2656ac 100644
--- a/superset-frontend/plugins/plugin-chart-echarts/src/Sunburst/transformProps.ts
+++ b/superset-frontend/plugins/plugin-chart-echarts/src/Sunburst/transformProps.ts
@@ -285,8 +285,6 @@ export default function transformProps(
   }
   const labelProps = {
     color: theme.colorText,
-    textBorderColor: theme.colorBgBase,
-    textBorderWidth: 1,
   };
   const traverse = (
     treeNodes: TreeNode[],
diff --git a/superset-frontend/plugins/plugin-chart-echarts/test/Sunburst/transformProps.test.ts b/superset-frontend/plugins/plugin-chart-echarts/test/Sunburst/transformProps.test.ts
new file mode 100644
index 00000000000..043b0395a64
--- /dev/null
+++ b/superset-frontend/plugins/plugin-chart-echarts/test/Sunburst/transformProps.test.ts
@@ -0,0 +1,53 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import { ChartProps } from '@superset-ui/core';
+import { supersetTheme } from '@apache-superset/core/theme';
+import { EchartsSunburstChartProps } from '../../src/Sunburst/types';
+import transformProps from '../../src/Sunburst/transformProps';
+
+const formData = {
+  colorScheme: 'bnbColors',
+  datasource: '3__table',
+  groupby: ['category'],
+  metric: 'sum__value',
+};
+
+const chartProps = new ChartProps({
+  formData,
+  width: 800,
+  height: 600,
+  queriesData: [
+    {
+      data: [
+        { category: 'A', sum__value: 10 },
+        { category: 'B', sum__value: 20 },
+      ],
+    },
+  ],
+  theme: supersetTheme,
+});
+
+test('series label has no textBorderColor or textBorderWidth', () => {
+  const { echartOptions } = transformProps(
+    chartProps as EchartsSunburstChartProps,
+  );
+  const series = (echartOptions as any).series[0];
+  expect(series.label).not.toHaveProperty('textBorderColor');
+  expect(series.label).not.toHaveProperty('textBorderWidth');
+});