From 8cf5a7240aaebf063858fcf175800b785073b6ad Mon Sep 17 00:00:00 2001
From: Burak Keskin <official.burak@icloud.com>
Date: Mon, 31 Aug 2026 14:13:46 +0300
Subject: [PATCH] Honor a numeric timeout of 0 instead of using the 5000ms
 default.

time || 5000 is falsy for zero, so timeout(0) waited five seconds. timeout("0ms") already meant zero milliseconds.
---
 HISTORY.md   | 6 ++++++
 index.js     | 2 +-
 test/test.js | 7 +++++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/HISTORY.md b/HISTORY.md
index 65dfa63..7510f2e 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,9 @@
+unreleased
+==========
+
+  * Fix: a numeric timeout of `0` was treated as the 5000ms default
+    because `time || 5000` is falsy for zero
+
 1.9.1 / 2025-07-17
 ==========
 
diff --git a/index.js b/index.js
index 339cec4..d3dc9ab 100644
--- a/index.js
+++ b/index.js
@@ -39,7 +39,7 @@ function timeout (time, options) {
 
   var delay = typeof time === 'string'
     ? ms(time)
-    : Number(time || 5000)
+    : Number(time == null ? 5000 : time)
 
   var respond = opts.respond === undefined || opts.respond === true
 
diff --git a/test/test.js b/test/test.js
index aefc6a9..36830ac 100644
--- a/test/test.js
+++ b/test/test.js
@@ -21,6 +21,13 @@ describe('timeout()', function () {
     .expect(503, /123ms/, done)
   })
 
+  it('should accept a zero millisecond timeout', function (done) {
+    var server = createServer(0)
+    request(server)
+    .get('/')
+    .expect(503, /after 0ms/, done)
+  })
+
   it('should accept string timeout', function (done) {
     var server = createServer('45ms')
     request(server)