From f343ebb2a726f8d54c683bec63edff10abaecf90 Mon Sep 17 00:00:00 2001
From: Denis Beketsky <tatsu.ukraine@gmail.com>
Date: Mon, 22 Jul 2019 23:02:59 +0300
Subject: [PATCH] fixed updateRenderObject type definitions

---
 lib/render.dart |  2 +-
 lib/widget.dart | 15 ++++++++-------
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/lib/render.dart b/lib/render.dart
index 8d27751..b7ab0f0 100644
--- a/lib/render.dart
+++ b/lib/render.dart
@@ -156,7 +156,7 @@ class StickyListItemRenderObject<I> extends RenderStack {
   }
 
   bool get _scrollDirectionVertical =>
-      [AxisDirection.up, AxisDirection.down].contains(_scrollable.axisDirection);
+      [AxisDirection.up, AxisDirection.down].contains(scrollable.axisDirection);
 
   bool get _alignmentStart {
     if (_scrollDirectionVertical) {
diff --git a/lib/widget.dart b/lib/widget.dart
index 3a77644..1e4c046 100644
--- a/lib/widget.dart
+++ b/lib/widget.dart
@@ -406,14 +406,15 @@ class StickyListItem<I> extends Stack {
 
   @override
   @mustCallSuper
-  void updateRenderObject(
-      BuildContext context, StickyListItemRenderObject<I> renderObject) {
+  void updateRenderObject(BuildContext context, RenderStack renderObject) {
     super.updateRenderObject(context, renderObject);
 
-    renderObject
-      ..scrollable = _getScrollableState(context)
-      ..itemIndex = itemIndex
-      ..streamSink = streamSink
-      ..minOffsetProvider = minOffsetProvider;
+    if (renderObject is StickyListItemRenderObject<I>) {
+      renderObject
+        ..scrollable = _getScrollableState(context)
+        ..itemIndex = itemIndex
+        ..streamSink = streamSink
+        ..minOffsetProvider = minOffsetProvider;
+    }
   }
 }