From 1f11a70f29de0ca9a88234b4548b73df7e57bc9f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8D=89=E9=9E=8B=E6=B2=A1=E5=8F=B7?= <308487730@qq.com>
Date: Mon, 8 Aug 2022 21:58:12 +0800
Subject: [PATCH] fix: tree-shake modulepreload polyfill (#9531)

---
 packages/vite/src/node/plugins/modulePreloadPolyfill.ts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/packages/vite/src/node/plugins/modulePreloadPolyfill.ts b/packages/vite/src/node/plugins/modulePreloadPolyfill.ts
index 4f0b3389fcc2c3..1799db26c8a9d1 100644
--- a/packages/vite/src/node/plugins/modulePreloadPolyfill.ts
+++ b/packages/vite/src/node/plugins/modulePreloadPolyfill.ts
@@ -22,8 +22,7 @@ export function modulePreloadPolyfillPlugin(config: ResolvedConfig): Plugin {
           return ''
         }
         if (!polyfillString) {
-          polyfillString =
-            `const p = ${polyfill.toString()};` + `${isModernFlag}&&p();`
+          polyfillString = `${isModernFlag}&&(${polyfill.toString()}());`
         }
         return polyfillString
       }