Add LTI annotations to function params in xplat/js [1/2]

Summary: Add annotations to function parameters required for Flow's Local Type Inference project. This codemod prepares the codebase to match Flow's new typechecking algorithm. The new algorithm will make Flow more reliable and predicatable.

Reviewed By: evanyeung

Differential Revision: D37353648

fbshipit-source-id: e5a0c685ced85a8ff353d578b373f836b376bb28

ReactAndroid/src/androidTest/js/ScrollViewTestModule.js

@@ -10,6 +10,11 @@
 
 'use strict';
 
+import type {
+  PressEvent,
+  ScrollEvent,
+} from 'react-native/Libraries/Types/CoreEventTypes';
+
 const BatchedBridge = require('react-native/Libraries/BatchedBridge/BatchedBridge');
 const React = require('react');
 
@@ -26,8 +31,6 @@ const {ScrollListener} = NativeModules;
 
 const NUM_ITEMS = 100;
 
-import type {PressEvent} from 'react-native/Libraries/Types/CoreEventTypes';
-
 // Shared by integration tests for ScrollView and HorizontalScrollView
 
 let scrollViewApp: ScrollViewTestApp | HorizontalScrollViewTestApp;
@@ -61,28 +64,28 @@ const getInitialState = function () {
   };
 };
 
-const onScroll = function (e) {
+const onScroll = function (e: ScrollEvent) {
   ScrollListener.onScroll(
     e.nativeEvent.contentOffset.x,
     e.nativeEvent.contentOffset.y,
   );
 };
 
-const onScrollBeginDrag = function (e) {
+const onScrollBeginDrag = function (e: ScrollEvent) {
   ScrollListener.onScrollBeginDrag(
     e.nativeEvent.contentOffset.x,
     e.nativeEvent.contentOffset.y,
   );
 };
 
-const onScrollEndDrag = function (e) {
+const onScrollEndDrag = function (e: ScrollEvent) {
   ScrollListener.onScrollEndDrag(
     e.nativeEvent.contentOffset.x,
     e.nativeEvent.contentOffset.y,
   );
 };
 
-const onItemPress = function (itemNumber) {
+const onItemPress = function (itemNumber: number) {
   ScrollListener.onItemPress(itemNumber);
 };