From 5866cfb2529ef5a5d5258b0fae0b37c3484d1762 Mon Sep 17 00:00:00 2001
From: patak <matias.capeletto@gmail.com>
Date: Tue, 19 Jul 2022 19:15:50 +0200
Subject: [PATCH] fix: ssrLoadModule executes code in non-strict mode, fixes
 #9197 (#9199)

---
 packages/vite/src/node/ssr/ssrModuleLoader.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/vite/src/node/ssr/ssrModuleLoader.ts b/packages/vite/src/node/ssr/ssrModuleLoader.ts
index e1dd392a138aed..e856b02402b659 100644
--- a/packages/vite/src/node/ssr/ssrModuleLoader.ts
+++ b/packages/vite/src/node/ssr/ssrModuleLoader.ts
@@ -195,7 +195,7 @@ async function instantiateModule(
       ssrImportKey,
       ssrDynamicImportKey,
       ssrExportAllKey,
-      result.code + `\n//# sourceURL=${mod.url}`
+      '"use strict";' + result.code + `\n//# sourceURL=${mod.url}`
     )
     await initModule(
       context.global,