From f927ba29efcfec5a1b4c7930c5ed993fd3cf5ff7 Mon Sep 17 00:00:00 2001
From: Damien Arrachequesne <damien.arrachequesne@gmail.com>
Date: Wed, 19 Jun 2024 10:44:04 +0200
Subject: [PATCH 1/3] test: fix tests on Node.js > 18

Reference: https://nodejs.org/api/buffer.html#class-blob
---
 test/socket.io.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/socket.io.js b/test/socket.io.js
index 7fe059d4a9..ca812398a1 100644
--- a/test/socket.io.js
+++ b/test/socket.io.js
@@ -1858,7 +1858,7 @@ describe('socket.io', function(){
     it('should not crash when messing with Object prototype (and other globals)', function(done){
       Object.prototype.foo = 'bar';
       global.File = '';
-      global.Blob = [];
+      // global.Blob = [];
       var srv = http();
       var sio = io(srv);
       srv.listen(function(){

From d30630ba10562bf987f4d2b42440fc41a828119c Mon Sep 17 00:00:00 2001
From: Damien Arrachequesne <damien.arrachequesne@gmail.com>
Date: Wed, 19 Jun 2024 10:46:29 +0200
Subject: [PATCH 2/3] fix: add a noop handler for the error event

Backported from main: https://github.com/socketio/socket.io/commit/15af22fc22bc6030fcead322c106f07640336115
---
 lib/socket.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/socket.js b/lib/socket.js
index bfdd77e856..cb7ba4123e 100644
--- a/lib/socket.js
+++ b/lib/socket.js
@@ -49,6 +49,8 @@ var flags = [
 
 var emit = Emitter.prototype.emit;
 
+function noop() {}
+
 /**
  * Interface to a `Client` for a given `Namespace`.
  *
@@ -72,6 +74,9 @@ function Socket(nsp, client, query){
   this.fns = [];
   this.flags = {};
   this._rooms = [];
+
+  // prevents crash when the socket receives an "error" event without listener
+  this.on('error', noop);
 }
 
 /**
@@ -427,12 +432,7 @@ Socket.prototype.ondisconnect = function(){
  */
 
 Socket.prototype.onerror = function(err){
-  if (this.listeners('error').length) {
-    this.emit('error', err);
-  } else {
-    console.error('Missing error handler on `socket`.');
-    console.error(err.stack);
-  }
+  this.emit('error', err);
 };
 
 /**

From 88b2cdb6abd38d6466fa4360748f2f67d8837ad4 Mon Sep 17 00:00:00 2001
From: Damien Arrachequesne <damien.arrachequesne@gmail.com>
Date: Wed, 19 Jun 2024 10:48:24 +0200
Subject: [PATCH 3/3] chore(release): 2.5.1

Release notes: https://github.com/socketio/socket.io/releases/tag/2.5.1
Diff: https://github.com/socketio/socket.io/compare/2.5.0...2.5.1
---
 CHANGELOG.md | 9 +++++++++
 package.json | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29267b4e50..ec09c35079 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## [2.5.1](https://github.com/socketio/socket.io/compare/2.5.0...2.5.1) (2024-06-19)
+
+
+### Bug Fixes
+
+* add a noop handler for the error event ([d30630b](https://github.com/socketio/socket.io/commit/d30630ba10562bf987f4d2b42440fc41a828119c))
+
+
+
 # [2.5.0](https://github.com/socketio/socket.io/compare/2.4.1...2.5.0) (2022-06-26)
 
 
diff --git a/package.json b/package.json
index 975856394c..e1d66c8661 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "socket.io",
-  "version": "2.5.0",
+  "version": "2.5.1",
   "description": "node.js realtime framework server",
   "keywords": [
     "realtime",