Event Handler fixes

Author: khorwood-openai

dist/lib/event_handler.d.ts.map

@@ -39,7 +39,7 @@ export class RealtimeEventHandler {
  on(eventName, callback) {
  this.eventHandlers[eventName] = this.eventHandlers[eventName] || [];
  this.eventHandlers[eventName].push(callback);
- callback;
+ return callback;
  }
 
  /**
@@ -51,6 +51,7 @@ export class RealtimeEventHandler {
  onNext(eventName, callback) {
  this.nextEventHandlers[eventName] = this.nextEventHandlers[eventName] || [];
  this.nextEventHandlers[eventName].push(callback);
+ return callback;
  }
 
  /**