Merge pull request #31697 from fvlvte/25003-migrate-flatlist

[TS migration] Migrate 'FlatList' component to TypeScript

src/components/FlatList/index.android.tsx

@@ -0,0 +1,43 @@
+import {useFocusEffect} from '@react-navigation/native';
+import React, {ForwardedRef, forwardRef, useCallback, useContext} from 'react';
+import {FlatList, FlatListProps} from 'react-native';
+import {ActionListContext} from '@pages/home/ReportScreenContext';
+
+// FlatList wrapped with the freeze component will lose its scroll state when frozen (only for Android).
+// CustomFlatList saves the offset and use it for scrollToOffset() when unfrozen.
+function CustomFlatList<T>(props: FlatListProps<T>, ref: ForwardedRef<FlatList>) {
+    const {scrollPosition, setScrollPosition} = useContext(ActionListContext);
+
+    const onScreenFocus = useCallback(() => {
+        if (typeof ref === 'function') {
+            return;
+        }
+        if (!ref?.current || !scrollPosition?.offset) {
+            return;
+        }
+        if (ref.current && scrollPosition.offset) {
+            ref.current.scrollToOffset({offset: scrollPosition.offset, animated: false});
+        }
+    }, [scrollPosition?.offset, ref]);
+
+    useFocusEffect(
+        useCallback(() => {
+            onScreenFocus();
+        }, [onScreenFocus]),
+    );
+
+    return (
+        <FlatList<T>
+            // eslint-disable-next-line react/jsx-props-no-spreading
+            {...props}
+            onScroll={(event) => props.onScroll?.(event)}
+            onMomentumScrollEnd={(event) => {
+                setScrollPosition({offset: event.nativeEvent.contentOffset.y});
+            }}
+            ref={ref}
+        />
+    );
+}
+
+CustomFlatList.displayName = 'CustomFlatListWithRef';
+export default forwardRef(CustomFlatList);