From 0cb6ac95b49a27483b6f1b6402fa54b35f82e36f Mon Sep 17 00:00:00 2001
From: Damien Arrachequesne <damien.arrachequesne@gmail.com>
Date: Mon, 17 May 2021 22:48:45 +0200
Subject: [PATCH] fix(typings): ensure compatibility with TypeScript 3.x

Labeled tuple elements were added in TypeScript 4.0.

Reference: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-0.html#labeled-tuple-elements

Related: https://github.com/socketio/socket.io/issues/3916
---
 lib/namespace.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/namespace.ts b/lib/namespace.ts
index 86ee06ad8b..e4bcfc5d20 100644
--- a/lib/namespace.ts
+++ b/lib/namespace.ts
@@ -307,7 +307,7 @@ export class Namespace<
    *
    * @private
    */
-  _onServerSideEmit(args: [eventName: string, ...args: any[]]) {
+  _onServerSideEmit(args: [string, ...any[]]) {
     super.emitUntyped.apply(this, args);
   }