Creating an EventEmitter util class

src/pipecat/utils/event_emitter.py

@@ -0,0 +1,20 @@
+class EventEmitter:
+    def __init__(self):
+        self._events = {}
+
+    def on(self, event_name):
+        """Decorator to register an event handler."""
+
+        def decorator(func):
+            if event_name not in self._events:
+                self._events[event_name] = []
+            self._events[event_name].append(func)
+            return func
+
+        return decorator
+
+    async def emit(self, event_name, *args, **kwargs):
+        """Trigger all handlers for a given event."""
+        if event_name in self._events:
+            for handler in self._events[event_name]:
+                await handler(*args, **kwargs)