From dfffea1f4363c07d6ebc05db6f0dae8bd8a0885d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=BF=A0=20/=20green?= <green@sapphi.red>
Date: Fri, 29 Mar 2024 13:51:38 +0900
Subject: [PATCH] fix(hmr): don't mutate module graph when collecting modules
 (#16302)

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

diff --git a/packages/vite/src/node/server/hmr.ts b/packages/vite/src/node/server/hmr.ts
index cf28591db056de..c5f5f8254941f5 100644
--- a/packages/vite/src/node/server/hmr.ts
+++ b/packages/vite/src/node/server/hmr.ts
@@ -162,7 +162,7 @@ export async function handleHMRUpdate(
     return
   }
 
-  const mods = moduleGraph.getModulesByFile(file) || new Set()
+  const mods = new Set(moduleGraph.getModulesByFile(file))
   if (type === 'create' || type === 'delete') {
     for (const mod of getAffectedGlobModules(file, server)) {
       mods.add(mod)