[FIX] Event emitter warning (#20663)

package-lock.json

@@ -6219,6 +6219,13 @@
 				"p-retry": "^3.0.1",
 				"retry": "^0.12.0",
 				"ws": "^5.2.0"
+			},
+			"dependencies": {
+				"eventemitter3": {
+					"version": "3.1.2",
+					"resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+					"integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
+				}
 			}
 		},
 		"@storybook/addon-actions": {
@@ -18745,9 +18752,9 @@
 			"integrity": "sha512-t0A2msp6BzOf+QAcI6z9XMktLj52OjGQg+8SJH6v5+3uxNpWYRR3wQmfA+6xtMU9kOC59qk9licus5dYcrYkMQ=="
 		},
 		"eventemitter3": {
-			"version": "3.1.2",
-			"resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
-			"integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
+			"version": "4.0.7",
+			"resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.7.tgz",
+			"integrity": "sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw=="
 		},
 		"events": {
 			"version": "1.1.1",

package.json

@@ -188,6 +188,7 @@
 		"emailreplyparser": "^0.0.5",
 		"emojione": "^4.5.0",
 		"eslint-plugin-import": "^2.22.0",
+		"eventemitter3": "^4.0.7",
 		"express": "^4.17.1",
 		"express-rate-limit": "^5.1.3",
 		"fflate": "^0.5.3",

server/modules/notifications/notifications.module.ts

@@ -87,6 +87,8 @@ export class NotificationsModule {
 			};
 
 			streamer.on(userId, userEvent);
+
+			publication.onStop(() => streamer.removeListener(userId, userEvent));
 		});
 
 		this.streamUser = new this.Streamer('notify-user');

server/modules/streamer/streamer.module.ts

@@ -1,4 +1,4 @@
-import { EventEmitter } from 'events';
+import { EventEmitter } from 'eventemitter3';
 
 class StreamerCentralClass extends EventEmitter {
 	public instances: Record<string, Streamer> = {};
@@ -359,8 +359,8 @@ export abstract class Streamer extends EventEmitter implements IStreamer {
 		});
 	}
 
-	emit(eventName: string, ...args: any[]): boolean {
-		return this._emit(eventName, args, undefined, true);
+	emit(eventName: string | symbol, ...args: any[]): boolean {
+		return this._emit(eventName as string, args, undefined, true);
 	}
 
 	__emit(eventName: string, ...args: any[]): boolean {