feat(companion): return clearEventSubscriptions result counts

src/companion/runtimeClient.ts

@@ -68,6 +68,11 @@ export interface ConnectionSnapshot {
   idle: boolean;
 }
 
+export interface ClearEventSubscriptionsResult {
+  clearedSubscriptions: number;
+  cancelledWaits: number;
+}
+
 export type CompanionEventHandler = (event: string, data: unknown) => void;
 export type CompanionTypedEventHandler<TData = unknown> = (data: TData) => void;
 export type CompanionEventPredicate<TData = unknown> = (data: TData) => boolean;
@@ -464,9 +469,14 @@ export class CompanionRuntimeClient {
     };
   }
 
-  clearEventSubscriptions(): void {
+  clearEventSubscriptions(): ClearEventSubscriptionsResult {
+    const clearedSubscriptions = this.eventHandlers.size;
     this.eventHandlers.clear();
-    this.rejectEventWaits(new Error('Event subscriptions cleared'));
+    const cancelledWaits = this.rejectEventWaits(new Error('Event subscriptions cleared'));
+    return {
+      clearedSubscriptions,
+      cancelledWaits,
+    };
   }
 
   cancelPendingEventWaits(reason = 'Event waits cancelled'): number {