Convert react-native-github/Libraries to let/const

Reviewed By: sahrens

Differential Revision: D7956042

fbshipit-source-id: 221851aa311f3cdd6326497352b366048db0a1bb

Libraries/Interaction/InteractionManager.js

@@ -77,7 +77,7 @@ const DEBUG = false;
  * allowing events such as touches to start interactions and block queued tasks
  * from executing, making apps more responsive.
  */
-var InteractionManager = {
+const InteractionManager = {
   Events: keyMirror({
     interactionStart: true,
     interactionComplete: true,
@@ -118,7 +118,7 @@ var InteractionManager = {
   createInteractionHandle(): Handle {
     DEBUG && infoLog('create interaction handle');
     _scheduleUpdate();
-    var handle = ++_inc;
+    const handle = ++_inc;
     _addInteractionSet.add(handle);
     return handle;
   },
@@ -181,14 +181,14 @@ function _scheduleUpdate() {
 function _processUpdate() {
   _nextUpdateHandle = 0;
 
-  var interactionCount = _interactionSet.size;
+  const interactionCount = _interactionSet.size;
   _addInteractionSet.forEach(handle =>
     _interactionSet.add(handle)
   );
   _deleteInteractionSet.forEach(handle =>
     _interactionSet.delete(handle)
   );
-  var nextInteractionCount = _interactionSet.size;
+  const nextInteractionCount = _interactionSet.size;
 
   if (interactionCount !== 0 && nextInteractionCount === 0) {
     // transition from 1+ --> 0 interactions

Libraries/Interaction/InteractionMixin.js

@@ -8,14 +8,14 @@
  */
 'use strict';
 
-var InteractionManager = require('InteractionManager');
+const InteractionManager = require('InteractionManager');
 
 /**
  * This mixin provides safe versions of InteractionManager start/end methods
  * that ensures `clearInteractionHandle` is always called
  * once per start, even if the component is unmounted.
  */
-var InteractionMixin = {
+const InteractionMixin = {
   componentWillUnmount: function() {
     while (this._interactionMixinHandles.length) {
       InteractionManager.clearInteractionHandle(
@@ -27,7 +27,7 @@ var InteractionMixin = {
   _interactionMixinHandles: ([]: Array<number>),
 
   createInteractionHandle: function() {
-    var handle = InteractionManager.createInteractionHandle();
+    const handle = InteractionManager.createInteractionHandle();
     this._interactionMixinHandles.push(handle);
     return handle;
   },

Libraries/Interaction/__tests__/InteractionMixin-test.js

@@ -11,9 +11,9 @@
 jest.enableAutomock().unmock('InteractionMixin');
 
 describe('InteractionMixin', () => {
-  var InteractionManager;
-  var InteractionMixin;
-  var component;
+  let InteractionManager;
+  let InteractionMixin;
+  let component;
 
   beforeEach(() => {
     jest.resetModules();
@@ -29,19 +29,19 @@ describe('InteractionMixin', () => {
   });
 
   it('should end interactions', () => {
-    var handle = {};
+    const handle = {};
     component.clearInteractionHandle(handle);
     expect(InteractionManager.clearInteractionHandle).toBeCalledWith(handle);
   });
 
   it('should schedule tasks', () => {
-    var task = jest.fn();
+    const task = jest.fn();
     component.runAfterInteractions(task);
     expect(InteractionManager.runAfterInteractions).toBeCalledWith(task);
   });
 
   it('should end unfinished interactions in componentWillUnmount', () => {
-    var handle = component.createInteractionHandle();
+    const handle = component.createInteractionHandle();
     component.componentWillUnmount();
     expect(InteractionManager.clearInteractionHandle).toBeCalledWith(handle);
   });