From e438802803d11acf99918690e4010b601fd7e40d Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Fri, 29 Jan 2021 14:28:08 -0500
Subject: [PATCH] fix: do not generate import specifier if not needed

---
 packages/vite/src/node/plugins/importAnalysis.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/vite/src/node/plugins/importAnalysis.ts b/packages/vite/src/node/plugins/importAnalysis.ts
index cdd8a0add40116..22cd4470e18c4c 100644
--- a/packages/vite/src/node/plugins/importAnalysis.ts
+++ b/packages/vite/src/node/plugins/importAnalysis.ts
@@ -523,6 +523,10 @@ function transformCjsImport(
   }) as any).body[0] as Node
 
   if (node.type === 'ImportDeclaration') {
+    if (!node.specifiers.length) {
+      return `import "${url}"`
+    }
+
     const importNames: ImportNameSpecifier[] = []
     for (const spec of node.specifiers) {
       if (