Merge pull request #41 from Expensify/Rory-PortCustomChanges-0.71.2

Port custom changes to 0.71.2

Author: roryabraham

.gitignore

@@ -134,3 +134,5 @@ package-lock.json
 
 # Temporary files created by Metro to check the health of the file watcher
 .metro-health-check*
+
+react-native-*.tgz

Libraries/Components/ScrollView/ScrollView.js

@@ -278,8 +278,6 @@ type IOSProps = $ReadOnly<{|
    * Caveat 2: This simply uses `contentOffset` and `frame.origin` in native code to compute
    * visibility. Occlusion, transforms, and other complexity won't be taken into account as to
    * whether content is "visible" or not.
-   *
-   * @platform ios
    */
   maintainVisibleContentPosition?: ?$ReadOnly<{|
     minIndexForVisible: number,

Libraries/Lists/FlatList.d.ts

@@ -104,19 +104,6 @@ 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

@@ -262,10 +262,37 @@ 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;
 
+  /**
+   * 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;
+
   onLayout?: ((event: LayoutChangeEvent) => void) | undefined;
 
   /**