fix: return the first response when broadcasting to a single socket

socket/broadcast-operator.go

@@ -232,7 +232,7 @@ func (b *BroadcastOperator) Emit(ev string, args ...any) error {
 		if 0 == atomic.LoadUint32(&timedOut) && expectedServerCount == atomic.LoadInt64(&actualServerCount) && uint64(len(responses)) == atomic.LoadUint64(&expectedClientCount) {
 			utils.ClearTimeout(timer)
 			if b.flags.ExpectSingleResponse {
-				ack(nil, nil)
+				ack(responses[0], nil)
 			} else {
 				ack(responses, nil)
 			}

socket/namespace.go

@@ -430,12 +430,16 @@ func (n *Namespace) EmitWithAck(ev string, args ...any) func(func([]any, error))
 //	// this is equivalent to
 //	myNamespace.Emit("message", "hello")
 func (n *Namespace) Send(args ...any) NamespaceInterface {
+	// This type-cast is needed because EmitEvents likely doesn't have `message` as a key.
+	// if you specify the EmitEvents, the type of args will be never.
 	n.Emit("message", args...)
 	return n
 }
 
 // Sends a `message` event to all clients. Sends a `message` event. Alias of [Send].
 func (n *Namespace) Write(args ...any) NamespaceInterface {
+	// This type-cast is needed because EmitEvents likely doesn't have `message` as a key.
+	// if you specify the EmitEvents, the type of args will be never.
 	n.Emit("message", args...)
 	return n
 }

socket/server.go

@@ -684,12 +684,16 @@ func (s *Server) EmitWithAck(ev string, args ...any) func(func([]any, error)) {
 //	// this is equivalent to
 //	io.Emit("message", "hello")
 func (s *Server) Send(args ...any) *Server {
+	// This type-cast is needed because EmitEvents likely doesn't have `message` as a key.
+	// if you specify the EmitEvents, the type of args will be never.
 	s.sockets.Emit("message", args...)
 	return s
 }
 
 // Sends a `message` event to all clients. Alias of [Send].
 func (s *Server) Write(args ...any) *Server {
+	// This type-cast is needed because EmitEvents likely doesn't have `message` as a key.
+	// if you specify the EmitEvents, the type of args will be never.
 	s.sockets.Emit("message", args...)
 	return s
 }