Incorrect argument matching in notifyOutgoingListeners

[vulpeep]

I encountered an issue in the notifyOutgoingListeners method (located in lib/src/socket.dart on line 318).

Here's the listener code I used:

socket.onAnyOutgoing((event, data) {
});

And here's the error I got:

NoSuchMethodError: Closure call with mismatched arguments: function 'SocketIoManager._initSocketListeners.<anonymous closure>'
Receiver: Closure: (String, dynamic) => Null
Tried calling: SocketIoManager._initSocketListeners.<anonymous closure>(Instance(length:2) of '_GrowableList')
Found: SocketIoManager._initSocketListeners.<anonymous closure>(String, dynamic) => Null

The issue seems to happen because of how arguments are passed in this part of the code:

void notifyOutgoingListeners(Map packet) {
  if (_anyOutgoingListeners.isNotEmpty) {
    final listeners = List.from(_anyOutgoingListeners);
    for (final listener in listeners) {
      Function.apply(listener, [packet['data']]);
    }
  }
}

Right now, the arguments are wrapped in square brackets ([packet['data']]), which causes the mismatch. If I remove the brackets, the error goes away, and everything works fine:

void notifyOutgoingListeners(Map packet) {
  if (_anyOutgoingListeners.isNotEmpty) {
    final listeners = List.from(_anyOutgoingListeners);
    for (final listener in listeners) {
      Function.apply(listener, packet['data']);
    }
  }
}

Steps to Reproduce:

1. Add a listener using onAnyOutgoing.
2. Send any outgoing event.
3. The error will occur due to argument mismatch.

Solution:
Removing the square brackets around packet['data'] in the notifyOutgoingListeners method fixes the issue and passes the arguments correctly.