From 35795a1a54b2bfaf331c58ca91b47e5672e08c4e Mon Sep 17 00:00:00 2001
From: Hippo <6137925+hippotastic@users.noreply.github.com>
Date: Mon, 4 Nov 2024 09:19:54 +0100
Subject: [PATCH] Fix watchfile multiple dev server restart (#12353)

---
 .changeset/famous-timers-move.md       | 5 +++++
 packages/astro/src/core/dev/restart.ts | 4 +++-
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/famous-timers-move.md

diff --git a/.changeset/famous-timers-move.md b/.changeset/famous-timers-move.md
new file mode 100644
index 000000000000..ca9f914c0885
--- /dev/null
+++ b/.changeset/famous-timers-move.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fixes an issue in dev server watch file handling that could cause multiple restarts for a single file change.
diff --git a/packages/astro/src/core/dev/restart.ts b/packages/astro/src/core/dev/restart.ts
index b7eab38af66b..9c3dc074296b 100644
--- a/packages/astro/src/core/dev/restart.ts
+++ b/packages/astro/src/core/dev/restart.ts
@@ -169,7 +169,9 @@ export async function createContainerWithAutomaticRestart({
 
 		// Restart the Astro dev server instead of Vite's when the API is called by plugins.
 		// Ignore the `forceOptimize` parameter for now.
-		restart.container.viteServer.restart = () => handleServerRestart();
+		restart.container.viteServer.restart = async () => {
+			if (!restart.container.restartInFlight) await handleServerRestart();
+		};
 
 		// Set up shortcuts