From 89ded17f34ec409ff8f2a3e5b1697e7362c35f48 Mon Sep 17 00:00:00 2001
From: Aleksei Tsikov <alexey.tsikov@gmail.com>
Date: Mon, 26 Feb 2018 21:56:03 +0200
Subject: [PATCH] [events] Set removeAllListeners argument as optional (#23828)

* Set removeAllListeners argument as optional

* Update version properly
---
 types/events/events-tests.ts | 6 ++++++
 types/events/index.d.ts      | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/types/events/events-tests.ts b/types/events/events-tests.ts
index ccf89c1402..67fe352225 100644
--- a/types/events/events-tests.ts
+++ b/types/events/events-tests.ts
@@ -53,6 +53,12 @@ setTimeout(() => {
   emitter.removeAllListeners('send');
 }, 3000);
 
+setTimeout(() => {
+  console.log('\n');
+  emitter.emit('send', 'params1');
+  emitter.removeAllListeners();
+}, 3000);
+
 setTimeout(() => {
   console.log('\n');
   emitter.emit(1);
diff --git a/types/events/index.d.ts b/types/events/index.d.ts
index 85ce0a7b0e..c9b08a4575 100644
--- a/types/events/index.d.ts
+++ b/types/events/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for events 1.1
+// Type definitions for events 1.2
 // Project: https://github.com/Gozala/events
 // Definitions by: Yasunori Ohoka <https://github.com/yasupeke>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -15,7 +15,7 @@ export class EventEmitter {
   on(type: string | number, listener: Listener): this;
   once(type: string | number, listener: Listener): this;
   removeListener(type: string | number, listener: Listener): this;
-  removeAllListeners(type: string | number): this;
+  removeAllListeners(type?: string | number): this;
   listeners(type: string | number): Listener[];
   listenerCount(type: string | number): number;
 }