emit method Null safety

  1. @override
Future<void> emit(
  1. String key,
  2. String from,
  3. dynamic data

Emit data to the window identified by the given key.

The from should default to the current window's key. data can be anything as long as it is a Dart standart data type.


Future<void> emit(String key, String from, data) =>
    throw UnimplementedError();