[Core] sort constructor first across package

packages/stream_chat_flutter_core/lib/src/channels_bloc.dart

@@ -37,15 +37,6 @@ class ChannelsBloc extends StatefulWidget {
   /// Function used to evaluate if a channel should be added to the list when a message.new event is received
   final bool Function(Event) shouldAddChannel;
 
-  /// Instantiate a new ChannelsBloc
-  const ChannelsBloc({
-    Key key,
-    this.child,
-    this.lockChannelsOrder = false,
-    this.channelsComparator,
-    this.shouldAddChannel,
-  }) : super(key: key);
-
   @override
   ChannelsBlocState createState() => ChannelsBlocState();
 

packages/stream_chat_flutter_core/lib/src/lazy_load_scroll_view.dart

@@ -6,6 +6,21 @@ enum _LoadingStatus { LOADING, STABLE }
 /// Wrapper around a [Scrollable] which triggers [onEndOfPage]/[onStartOfPage] the Scrollable
 /// reaches to the start or end of the view extent.
 class LazyLoadScrollView extends StatefulWidget {
+  /// Creates a new instance of [LazyLoadScrollView]. The parameter [child] must be
+  /// supplied and not null.
+  const LazyLoadScrollView({
+    Key key,
+    @required this.child,
+    this.onStartOfPage,
+    this.onEndOfPage,
+    this.onPageScrollStart,
+    this.onPageScrollEnd,
+    this.onInBetweenOfPage,
+    this.isLoading = false,
+    this.scrollOffset = 100,
+  })  : assert(child != null),
+        super(key: key);
+
   /// The [Widget] that this widget watches for changes on
   final Widget child;
 
@@ -30,19 +45,6 @@ class LazyLoadScrollView extends StatefulWidget {
   /// Used to determine if loading of new data has finished. You should use set this if you aren't using a [FutureBuilder] or [StreamBuilder].
   final bool isLoading;
 
-  /// Initiates a LazyLoadScrollView widget
-  const LazyLoadScrollView({
-    Key key,
-    @required this.child,
-    this.onStartOfPage,
-    this.onEndOfPage,
-    this.onPageScrollStart,
-    this.onPageScrollEnd,
-    this.onInBetweenOfPage,
-    this.isLoading = false,
-    this.scrollOffset = 100,
-  })  : assert(child != null),
-        super(key: key);
 
   @override
   State<StatefulWidget> createState() => _LazyLoadScrollViewState();

packages/stream_chat_flutter_core/lib/src/message_search_bloc.dart

@@ -12,9 +12,6 @@ import 'stream_chat_core.dart';
 ///
 // API docs: https://getstream.io/chat/docs/flutter-dart/send_message/
 class MessageSearchBloc extends StatefulWidget {
-  /// The widget child
-  final Widget child;
-
   /// Instantiate a new MessageSearchBloc
   const MessageSearchBloc({
     Key key,

packages/stream_chat_flutter_core/lib/src/stream_chat_core.dart

@@ -32,13 +32,6 @@ import 'package:stream_chat/stream_chat.dart';
 /// ```
 ///
 class StreamChatCore extends StatefulWidget {
-  /// Instance of Stream Chat Client containing information about the current
-  /// application.
-  final Client client;
-
-  /// Widget descendant.
-  final Widget child;
-
   /// Constructor used for creating a new instance of [StreamChatCore].
   ///
   /// [StreamChatCore] is a stateful widget which reacts to system events and updates

packages/stream_chat_flutter_core/lib/src/users_bloc.dart

@@ -11,10 +11,6 @@ import 'stream_chat_core.dart';
 ///
 /// API docs: https://getstream.io/chat/docs/flutter-dart/init_and_users/
 class UsersBloc extends StatefulWidget {
-  /// The widget child
-  final Widget child;
-
-  /// Instantiate a new UsersBloc
   /// Instantiate a new [UsersBloc]. The parameter [child] must be supplied and
   /// not null.
   const UsersBloc({
@@ -22,6 +18,9 @@ class UsersBloc extends StatefulWidget {
     @required this.child,
   }) : super(key: key);
 
+  /// The widget child
+  final Widget child;
+
   @override
   UsersBlocState createState() => UsersBlocState();