add once

TracerBench · May 31, 2018 · d8ec1eb · d8ec1eb
1 parent dc15c78
commit d8ec1eb
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/lib/types.ts b/lib/types.ts
@@ -101,6 +101,7 @@ export interface IDebuggingProtocolClient extends IEventNotifier, IDisposable {
 
 export interface IEventNotifier {
   on(event: string, listener: (evt?: any) => void): any;
+  once(event: string, listener: (evt?: any) => void): any;
   removeListener(event: string, listener: (evt?: any) => void): any;
   removeAllListeners(event?: string): any;
 }
@@ -147,6 +148,9 @@ export interface IConnection extends IDisposable, IEventNotifier {
   on(event: "message", listener: MessageEventHandler): any;
   on(event: "error", listener: ErrorEventHandler): any;
   on(event: "close", listener: CloseEventHandler): any;
+  once(event: "message", listener: MessageEventHandler): any;
+  once(event: "error", listener: ErrorEventHandler): any;
+  once(event: "close", listener: CloseEventHandler): any;
   removeListener(event: "message", listener: MessageEventHandler): any;
   removeListener(event: "error", listener: ErrorEventHandler): any;
   removeListener(event: "close", listener: CloseEventHandler): any;