From fa8574921195dd03b539c150a2ae5f97121a0aea Mon Sep 17 00:00:00 2001
From: Vben <anncwb@126.com>
Date: Thu, 1 Apr 2021 05:21:29 +0800
Subject: [PATCH] fix(define): ensure the normal use of NODE_ENV, fix #2759
 (#2764)

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

diff --git a/packages/vite/src/node/plugins/define.ts b/packages/vite/src/node/plugins/define.ts
index 069e41417902aa..573c0d362c46c7 100644
--- a/packages/vite/src/node/plugins/define.ts
+++ b/packages/vite/src/node/plugins/define.ts
@@ -31,7 +31,7 @@ export function definePlugin(config: ResolvedConfig): Plugin {
   }
 
   const replacements: Record<string, string | undefined> = {
-    'process.env.NODE_ENV': JSON.stringify(config.mode),
+    'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || config.mode),
     ...userDefine,
     ...importMetaKeys,
     'process.env.': `({}).`