Merge pull request DefinitelyTyped#23648 from sarahscott/flatlist-scrolltoindex

[react-native] Updated scrollToIndex method of FlatList

Author: alloy

types/react-native/index.d.ts

@@ -3643,11 +3643,11 @@ export interface FlatListStatic<ItemT> extends React.ComponentClass<FlatListProp
     scrollToEnd: (params?: { animated?: boolean }) => void;
 
     /**
-     * Scrolls to the item at a the specified index such that it is positioned in the viewable area
-     * such that `viewPosition` 0 places it at the top, 1 at the bottom, and 0.5 centered in the middle.
-     * May be janky without `getItemLayout` prop.
+     * Scrolls to the item at the specified index such that it is positioned in the viewable area
+     * such that viewPosition 0 places it at the top, 1 at the bottom, and 0.5 centered in the middle.
+     * Cannot scroll to locations outside the render window without specifying the getItemLayout prop.
      */
-    scrollToIndex: (params: { animated?: boolean; index: number; viewPosition?: number }) => void;
+    scrollToIndex: (params: { animated?: boolean; index: number; viewOffset: number; viewPosition?: number }) => void;
 
     /**
      * Requires linear scan through data - use `scrollToIndex` instead if possible.