Added callback onBufferedAmountChange and bufferedAmount

Author: abhay-s-rawat

CHANGELOG.md

@@ -3,7 +3,7 @@
 --------------------------------------------
 [1.0.5] - 2022-05-31
 
-* Added Function(int currentAmount, int changedAmount)? onBufferedAmountChange callback.
+* Added Function(int currentAmount, int changedAmount)? onBufferedAmountChange callback and set bufferedAmount as non nullable.
 
 [1.0.4] - 2022-05-08
 

lib/src/rtc_data_channel.dart

@@ -77,7 +77,7 @@ abstract class RTCDataChannel {
   /// Get channel label
   String? get label;
 
-  int? get bufferedAmount;
+  int get bufferedAmount;
 
   /// Stream of state change events. Emits the new state on change.
   /// Closes when the [RTCDataChannel] is closed.