Typeservicesv0.6.0InternalSEEventKeyNarrows a provided event map to the keys that can be emitted or listened for. type SEEventKey<TEvents extends object> = Extract< keyof TEvents, string | symbol >;type SEEventKey<TEvents extends object> = Extract< keyof TEvents, string | symbol >;Type parametersTEventsMap of event names to readonly tuple payloads TEvents extends objectTEvents extends object
