From 3023687b4683f01084680ad84016a40037e55e92 Mon Sep 17 00:00:00 2001
From: Ilya Semenov <ilya@semenov.co>
Date: Tue, 7 Apr 2026 22:49:20 +0700
Subject: [PATCH] fix(bun): support `NITRO_BUN_IDLE_TIMEOUT=0`

---
 src/presets/bun/runtime/bun.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/presets/bun/runtime/bun.ts b/src/presets/bun/runtime/bun.ts
index e031de268c..9c1c221593 100644
--- a/src/presets/bun/runtime/bun.ts
+++ b/src/presets/bun/runtime/bun.ts
@@ -10,12 +10,16 @@ const ws = import.meta._websocket
   ? wsAdapter(nitroApp.h3App.websocket)
   : undefined;
 
+function parseInt(value: string) {
+  const parsedValue = Number.parseInt(value);
+  return Number.isNaN(parsedValue) ? undefined : parsedValue;
+}
+
 // @ts-expect-error
 const server = Bun.serve({
   port: process.env.NITRO_PORT || process.env.PORT || 3000,
   host: process.env.NITRO_HOST || process.env.HOST,
-  idleTimeout:
-    Number.parseInt(process.env.NITRO_BUN_IDLE_TIMEOUT as string) || undefined,
+  idleTimeout: parseInt(process.env.NITRO_BUN_IDLE_TIMEOUT as string),
   websocket: import.meta._websocket ? ws!.websocket : (undefined as any),
   async fetch(req: Request, server: any) {
     // https://crossws.unjs.io/adapters/bun