From b8accf405ac7d8f252115b21cc32370986fd44da Mon Sep 17 00:00:00 2001
From: David Howell <davidh@dynamicmethods.com.au>
Date: Wed, 26 Apr 2017 15:31:36 +0930
Subject: [PATCH 1/2] Add params Object to SwipeableListView.getNewDataSource()

---
 .../SwipeableRow/SwipeableListView.js         | 26 +++++++++++++++----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/Libraries/Experimental/SwipeableRow/SwipeableListView.js b/Libraries/Experimental/SwipeableRow/SwipeableListView.js
index 95381044771544..ae12fd337641e0 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableListView.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableListView.js
@@ -61,12 +61,28 @@ class SwipeableListView extends React.Component<DefaultProps, Props, State> {
   _listViewRef: ?React.Element<any> = null;
   _shouldBounceFirstRowOnMount: boolean = false;
 
-  static getNewDataSource(): Object {
+  static getNewDataSource(params: Object): Object {
     return new SwipeableListViewDataSource({
-      getRowData: (data, sectionID, rowID) => data[sectionID][rowID],
-      getSectionHeaderData: (data, sectionID) => data[sectionID],
-      rowHasChanged: (row1, row2) => row1 !== row2,
-      sectionHeaderHasChanged: (s1, s2) => s1 !== s2,
+      getRowData: (
+        params && params.getRowData
+          ? params.getRowData
+          : (data, sectionID, rowID) => data[sectionID][rowID]
+      ),
+      getSectionHeaderData: (
+        params && params.getSectionHeaderData
+          ? params.getSectionHeaderData
+          : (data, sectionID) => data[sectionID]
+      ),
+      rowHasChanged: (
+        params && params.rowHasChanged
+          ? params.rowHasChanged
+          : (row1, row2) => row1 !== row2
+        ),
+      sectionHeaderHasChanged: (
+        params && params.sectionHeaderHasChanged
+          ? params.sectionHeaderHasChanged
+          : (s1, s2) => s1 !== s2
+      ),
     });
   }
 

From baad8a5439affaf6cbfe63db64f1df3aa6a07ee3 Mon Sep 17 00:00:00 2001
From: David Howell <davidh@dynamicmethods.com.au>
Date: Thu, 27 Apr 2017 13:53:51 +0930
Subject: [PATCH 2/2] Set optional flow type

---
 Libraries/Experimental/SwipeableRow/SwipeableListView.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Libraries/Experimental/SwipeableRow/SwipeableListView.js b/Libraries/Experimental/SwipeableRow/SwipeableListView.js
index ae12fd337641e0..abc2548116e289 100644
--- a/Libraries/Experimental/SwipeableRow/SwipeableListView.js
+++ b/Libraries/Experimental/SwipeableRow/SwipeableListView.js
@@ -61,7 +61,7 @@ class SwipeableListView extends React.Component<DefaultProps, Props, State> {
   _listViewRef: ?React.Element<any> = null;
   _shouldBounceFirstRowOnMount: boolean = false;
 
-  static getNewDataSource(params: Object): Object {
+  static getNewDataSource(params: ?Object): Object {
     return new SwipeableListViewDataSource({
       getRowData: (
         params && params.getRowData