From f8ea716a79f994f55fc3dcfdc70f9678af79f359 Mon Sep 17 00:00:00 2001
From: Vladimir <sleuths.slews0s@icloud.com>
Date: Fri, 8 Sep 2023 12:58:05 +0300
Subject: [PATCH] fix(vitest): set SSR env only when transformMode is ssr
 (#4083)

---
 packages/vitest/src/node/plugins/index.ts | 1 -
 packages/vitest/src/runtime/setup.node.ts | 4 ++++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/vitest/src/node/plugins/index.ts b/packages/vitest/src/node/plugins/index.ts
index e3f11a49261e..2f30b17dc958 100644
--- a/packages/vitest/src/node/plugins/index.ts
+++ b/packages/vitest/src/node/plugins/index.ts
@@ -140,7 +140,6 @@ export async function VitestPlugin(options: UserConfig = {}, ctx = new Vitest('t
         // so we are making them truthy
         process.env.PROD ??= PROD ? '1' : ''
         process.env.DEV ??= DEV ? '1' : ''
-        process.env.SSR ??= '1'
 
         for (const name in envs)
           process.env[name] ??= envs[name]
diff --git a/packages/vitest/src/runtime/setup.node.ts b/packages/vitest/src/runtime/setup.node.ts
index 2e1a1aa3ee89..e1f1bc1f1d25 100644
--- a/packages/vitest/src/runtime/setup.node.ts
+++ b/packages/vitest/src/runtime/setup.node.ts
@@ -37,6 +37,10 @@ export async function setupGlobalEnv(config: ResolvedConfig, { environment }: Re
     _require.extensions['.scss'] = () => ({})
     _require.extensions['.sass'] = () => ({})
     _require.extensions['.less'] = () => ({})
+    process.env.SSR = ''
+  }
+  else {
+    process.env.SSR = '1'
   }
 
   installSourcemapsSupport({