Set listener parameter of once() as optional (#23)

Solves #22
yanickrochon · Apr 27, 2021 · 4865793 · 4865793
1 parent b001fa2
commit 4865793
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/emitter.d.ts b/emitter.d.ts
@@ -18,7 +18,7 @@ declare class EventEmitter {
     emit(type: TEventType, ...args: any[]): Promise<any>;
     addListener(type: TEventType, listener: TListener): Promise<any>;
     prependListener(type: TEventType, listener: TListener): Promise<any>;
-    once(type: TEventType, listener: TListener): Promise<any>;
+    once(type: TEventType, listener?: TListener): Promise<any>;
     prependOnceListener(type: TEventType, listener: TListener): Promise<any>;
     removeListener(type: TEventType, listener: TListener): Promise<any>;
     removeAllListeners(type: string | symbol): Promise<any>;