App crashes when triggering an event with map data on a private channel

[Phelickz]

Hi there

Bug Report: App crashes when triggering event with a map data type on private channel

Description

I get this error when I try to trigger an event for a private channel:

Could not cast value of type '__NSDictionaryM' (0x10e189548) to 'NSString' (0x10e1819f0).

After this error, the app crashes.

Code Sample

Here is the code I'm using that causes the error:

await _pusher.trigger(
    PusherEvent(
        channelName: 'private-$channelId', 
        eventName: 'client-$event', 
        data: { 'some': 'map', 'data': 'example' },
    ),
);

If I use a string instead of a map for the data parameter, no error is thrown, and the event works fine:

await _pusher.trigger(
    PusherEvent(
        channelName: 'private-$channelId', 
        eventName: 'client-$event', 
        data: 'some string',
    ),
);

Additional Information

• Subscription to the channel was successful:

LOG: onEvent: { channelName: private-77a90cc0-a3a6-4d35-a7bc-ba8abaacd8eb, eventName: pusher:subscription_succeeded, data: {}, userId: null }

Expected Behavior

The data parameter for the triggerEvent method is of dynamic type, so I assume it should accept different data types, including maps. I expect that using a map for data shouldn't crash the app. Ideally, the framework should handle the error or throw an exception instead of causing a crash.

Wrapping the code in a try-catch block did not help in catching the error.

Environment

• Platform: [iOS]
• Framework: [2.2.1]
• Language: Dart/Flutter

[Phelickz]

Also to add that I could just easily json encode the map data, but I wanted to bring it to your notice that some native platform errors are causing the app to crash.

It also happened when I was trying to join a private channel. If my backend throws an error and the authorizer doesn't complete, my app crashes. Using a try-catch block does not help. Please fix.