Merge pull request #97 from dab246/fix-broadcast-channel-not-found-when-compile-on-mobile

fix: BroadcastChannel method not found when run on `dart.library.io`

Author: terrier989

lib/src/html.dart

@@ -121,7 +121,7 @@ part 'html/api/window.dart';
 part 'html/api/window_misc.dart';
 
 part 'html/api/workers.dart';
-
+part 'html/api/broadcast_channel.dart';
 part 'html/dom/css.dart';
 
 part 'html/dom/css_computed_style.dart';

lib/src/html/api/broadcast_channel.dart

@@ -0,0 +1,13 @@
+part of '../../html.dart';
+
+class BroadcastChannel {
+  final String name;
+
+  BroadcastChannel(this.name);
+
+  void close() {}
+
+  void postMessage(Object message) {}
+
+  Stream<dynamic> get onMessage => const Stream.empty();
+}