From be731c1e7a2fa5f784b41ee78f39b55571a8bb1e Mon Sep 17 00:00:00 2001
From: Hiroshi Ogawa <hi.ogawa.zz@gmail.com>
Date: Wed, 2 Apr 2025 10:35:33 +0900
Subject: [PATCH 1/2] fix(browser): fix transform before browser server
 initialization

---
 packages/vitest/src/node/project.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/vitest/src/node/project.ts b/packages/vitest/src/node/project.ts
index efdec524be23..c6843627db34 100644
--- a/packages/vitest/src/node/project.ts
+++ b/packages/vitest/src/node/project.ts
@@ -516,13 +516,20 @@ export class TestProject {
       this.vitest.version,
     )
     const { createBrowserServer, distRoot } = await import('@vitest/browser')
+    let cacheDir: string
     const browser = await createBrowserServer(
       this,
       this.vite.config.configFile,
       [
+        {
+          name: 'vitest:browser-cacheDir',
+          configResolved(config) {
+            cacheDir = config.cacheDir
+          },
+        },
         ...MocksPlugins({
           filter(id) {
-            if (id.includes(distRoot) || id.includes(browser.vite.config.cacheDir)) {
+            if (id.includes(distRoot) || id.includes(cacheDir)) {
               return false
             }
             return true

From 296ce0c5e8dc87cdf613cdcb8fa2fa9c618dee19 Mon Sep 17 00:00:00 2001
From: Hiroshi Ogawa <hi.ogawa.zz@gmail.com>
Date: Wed, 2 Apr 2025 11:00:15 +0900
Subject: [PATCH 2/2] test: add test

---
 test/browser/vitest.config.mts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/browser/vitest.config.mts b/test/browser/vitest.config.mts
index 7f7e784d3e14..b007a4ab9c33 100644
--- a/test/browser/vitest.config.mts
+++ b/test/browser/vitest.config.mts
@@ -117,5 +117,11 @@ export default defineConfig({
         }
       },
     },
+    {
+      name: 'test-early-transform',
+      async configureServer(server) {
+        await server.ssrLoadModule('/package.json')
+      },
+    },
   ],
 })