maintainVisibleContent position work for 0.71

Libraries/Components/ScrollView/ScrollView.js

@@ -279,7 +279,6 @@ type IOSProps = $ReadOnly<{|
    * visibility. Occlusion, transforms, and other complexity won't be taken into account as to
    * whether content is "visible" or not.
    *
-   * @platform ios
    */
   maintainVisibleContentPosition?: ?$ReadOnly<{|
     minIndexForVisible: number,

Libraries/Lists/FlatList.d.ts

@@ -146,19 +146,6 @@ export interface FlatListProps<ItemT> extends VirtualizedListProps<ItemT> {
    */
   numColumns?: number | undefined;
 
-  /**
-   * Called once when the scroll position gets within onEndReachedThreshold of the rendered content.
-   */
-  onEndReached?: ((info: {distanceFromEnd: number}) => void) | null | undefined;
-
-  /**
-   * How far from the end (in units of visible length of the list) the bottom edge of the
-   * list must be from the end of the content to trigger the `onEndReached` callback.
-   * Thus a value of 0.5 will trigger `onEndReached` when the end of the content is
-   * within half the visible length of the list.
-   */
-  onEndReachedThreshold?: number | null | undefined;
-
   /**
    * If provided, a standard RefreshControl will be added for "Pull to Refresh" functionality.
    * Make sure to also set the refreshing prop correctly.

Libraries/Lists/VirtualizedList.d.ts

@@ -232,8 +232,18 @@ export interface VirtualizedListWithoutRenderItemProps<ItemT>
    */
   maxToRenderPerBatch?: number | undefined;
 
+  /**
+   * Called once when the scroll position gets within within `onEndReachedThreshold`
+   * from the logical end of the list.
+   */
   onEndReached?: ((info: {distanceFromEnd: number}) => void) | null | undefined;
 
+  /**
+   * How far from the end (in units of visible length of the list) the trailing edge of the
+   * list must be from the end of the content to trigger the `onEndReached` callback.
+   * Thus, a value of 0.5 will trigger `onEndReached` when the end of the content is
+   * within half the visible length of the list.
+   */
   onEndReachedThreshold?: number | null | undefined;
 
   onLayout?: ((event: LayoutChangeEvent) => void) | undefined;
@@ -257,6 +267,23 @@ export interface VirtualizedListWithoutRenderItemProps<ItemT>
       }) => void)
     | undefined;
 
+  /**
+   * Called once when the scroll position gets within within `onStartReachedThreshold`
+   * from the logical start of the list.
+   */
+  onStartReached?:
+    | ((info: {distanceFromStart: number}) => void)
+    | null
+    | undefined;
+
+  /**
+   * How far from the start (in units of visible length of the list) the leading edge of the
+   * list must be from the start of the content to trigger the `onStartReached` callback.
+   * Thus, a value of 0.5 will trigger `onStartReached` when the start of the content is
+   * within half the visible length of the list.
+   */
+  onStartReachedThreshold?: number | null | undefined;
+
   /**
    * Called when the viewability of rows changes, as defined by the
    * `viewabilityConfig` prop.