From 65c9d55eba8f9b88be9ed560d598daccec4d5b34 Mon Sep 17 00:00:00 2001
From: Mikhail Pertsev <arthasmontano@mail.ru>
Date: Tue, 7 Apr 2026 21:31:10 +0200
Subject: [PATCH] fix(browser): spread user server options into browser Vite
 server in project (#10049)

---
 packages/browser/src/node/index.ts            |  1 +
 .../server-options-inline/basic.test.ts       |  6 ++++
 .../server-options-inline/vitest.config.ts    | 28 +++++++++++++++++++
 .../specs/server-options-inline.test.ts       | 10 +++++++
 4 files changed, 45 insertions(+)
 create mode 100644 test/browser/fixtures/server-options-inline/basic.test.ts
 create mode 100644 test/browser/fixtures/server-options-inline/vitest.config.ts
 create mode 100644 test/browser/specs/server-options-inline.test.ts

diff --git a/packages/browser/src/node/index.ts b/packages/browser/src/node/index.ts
index 7da68231e..d927fb561 100644
--- a/packages/browser/src/node/index.ts
+++ b/packages/browser/src/node/index.ts
@@ -74,6 +74,7 @@ export const createBrowserServer: BrowserServerFactory = async (options) => {
     configLoader: project.vite.config.inlineConfig.configLoader,
     // watch is handled by Vitest
     server: {
+      ...project.options?.server,
       hmr: false,
       watch: null,
     },
diff --git a/test/browser/fixtures/server-options-inline/basic.test.ts b/test/browser/fixtures/server-options-inline/basic.test.ts
new file mode 100644
index 000000000..981b77b7b
--- /dev/null
+++ b/test/browser/fixtures/server-options-inline/basic.test.ts
@@ -0,0 +1,6 @@
+import { expect, test } from 'vitest'
+
+test('server headers from inline project config', async () => {
+  const res = await fetch('/')
+  expect(res.headers.get('x-inline-project')).toBe('from-inline-config')
+})
diff --git a/test/browser/fixtures/server-options-inline/vitest.config.ts b/test/browser/fixtures/server-options-inline/vitest.config.ts
new file mode 100644
index 000000000..02105cbf5
--- /dev/null
+++ b/test/browser/fixtures/server-options-inline/vitest.config.ts
@@ -0,0 +1,28 @@
+import { fileURLToPath } from 'node:url'
+import { defineConfig } from 'vitest/config'
+import { instances, provider } from '../../settings'
+
+// Test that server options defined in an inline project config
+// are passed through to the browser Vite server.
+export default defineConfig({
+  cacheDir: fileURLToPath(new URL('./node_modules/.vite', import.meta.url)),
+  test: {
+    projects: [
+      {
+        server: {
+          headers: {
+            'x-inline-project': 'from-inline-config',
+          },
+        },
+        test: {
+          browser: {
+            enabled: true,
+            headless: true,
+            provider,
+            instances,
+          },
+        },
+      },
+    ],
+  },
+})
diff --git a/test/browser/specs/server-options-inline.test.ts b/test/browser/specs/server-options-inline.test.ts
new file mode 100644
index 000000000..544939640
--- /dev/null
+++ b/test/browser/specs/server-options-inline.test.ts
@@ -0,0 +1,10 @@
+import { expect, test } from 'vitest'
+import { instances, runBrowserTests } from './utils'
+
+test('inline project server options are passed to browser server', async () => {
+  const { stdout, stderr } = await runBrowserTests({
+    root: './fixtures/server-options-inline',
+  })
+  expect(stderr).toBe('')
+  expect(stdout).toReportSummaryTestFiles({ passed: instances.length })
+})
-- 
2.51.2