`yarn flow-check-macos` is clean.

Libraries/Alert/RCTAlertManager.macos.js

@@ -10,8 +10,7 @@
 
 // TODO(macOS ISS#2323203)
 
-'use strict';
+/* $FlowFixMe allow macOS to share iOS file */
+const alertWithArgs = require('./RCTAlertManager.ios');
 
-var RCTAlertManager = require('../BatchedBridge/NativeModules').AlertManager;
+module.exports = alertWithArgs;
-
-module.exports = RCTAlertManager;

Libraries/Components/AccessibilityInfo/AccessibilityInfo.macos.js

@@ -17,8 +17,6 @@ const RCTDeviceEventEmitter = require('../../EventEmitter/RCTDeviceEventEmitter'
 
 import NativeAccessibilityManager from './NativeAccessibilityManager';
 
-const warning = require('fbjs/lib/warning');
-
 const CHANGE_EVENT_NAME = {
   invertColorsChanged: 'invertColorsChanged',
   reduceMotionChanged: 'reduceMotionChanged',
@@ -35,6 +33,16 @@ type ChangeEventName = $Keys<{
 }>;
 
 const _subscriptions = new Map();
+
+/**
+ * Sometimes it's useful to know whether or not the device has a screen reader
+ * that is currently active. The `AccessibilityInfo` API is designed for this
+ * purpose. You can use it to query the current state of the screen reader as
+ * well as to register to be notified when the state of the screen reader
+ * changes.
+ *
+ * See http://facebook.github.io/react-native/docs/accessibilityinfo.html
+ */
 const AccessibilityInfo = {
   /**
    * iOS only
@@ -130,7 +138,10 @@ const AccessibilityInfo = {
    *
    * Same as `isScreenReaderEnabled`
    */
-  get fetch() {
+  get fetch(): $FlowFixMe {
+    console.warn(
+      'AccessibilityInfo.fetch is deprecated, call Accessibility.isScreenReaderEnabled instead',
+    );
     return this.isScreenReaderEnabled;
   },
 
@@ -159,18 +170,6 @@ const AccessibilityInfo = {
     };
   },
 
-  removeEventListener: function(
-    eventName: ChangeEventName,
-    handler: Function,
-  ): void {
-    const listener = _subscriptions.get(handler);
-    if (!listener) {
-      return;
-    }
-    listener.remove();
-    _subscriptions.delete(handler);
-  },
-
   /**
    * Set accessibility focus to a react component.
    *
@@ -192,6 +191,23 @@ const AccessibilityInfo = {
       NativeAccessibilityManager.announceForAccessibility(announcement);
     }
   },
+
+  /**
+   * Remove an event handler.
+   *
+   * See http://facebook.github.io/react-native/docs/accessibilityinfo.html#removeeventlistener
+   */
+  removeEventListener: function(
+    eventName: ChangeEventName,
+    handler: Function,
+  ): void {
+    const listener = _subscriptions.get(handler);
+    if (!listener) {
+      return;
+    }
+    listener.remove();
+    _subscriptions.delete(handler);
+  },
 };
 
 module.exports = AccessibilityInfo;

Libraries/Components/DrawerAndroid/__tests__/DrawerAndroid-test.js

@@ -12,7 +12,7 @@
 'use strict';
 
 const React = require('react');
-/* $FlowFixMe(>=0.99.0 site=react_native_ios_fb) This comment suppresses an
+/* $FlowFixMe(>=0.99.0 site=react_native_ios_fb,react_native_macos_fb) This comment suppresses an
  * error found when Flow v0.99 was deployed. To see the error, delete this
  * comment and run Flow. */
 const DrawerLayoutAndroid = require('../DrawerLayoutAndroid.android');

Libraries/Components/ProgressBarAndroid/__tests__/ProgressBarAndroid-test.js

@@ -12,7 +12,7 @@
 'use strict';
 
 const React = require('react');
-/* $FlowFixMe(>=0.99.0 site=react_native_ios_fb) This comment suppresses an
+/* $FlowFixMe(>=0.99.0 site=react_native_ios_fb,react_native_macos_fb) This comment suppresses an
  * error found when Flow v0.99 was deployed. To see the error, delete this
  * comment and run Flow. */
 const ProgressBarAndroid = require('../ProgressBarAndroid.android');

Libraries/Utilities/Platform.macos.js

@@ -14,15 +14,17 @@
 
 import NativePlatformConstantsMacOS from './NativePlatformConstantsMacOS';
 
-export type PlatformSelectSpec<D, I> = {
+export type PlatformSelectSpec<D, N, I> = {
   default?: D,
+  native?: N,
   macos?: I,
+  ...
 };
 
 const Platform = {
   __constants: null,
   OS: 'macos',
-  get Version(): $FlowFixMe {
+  get Version(): string {
     return this.constants.osVersion;
   },
   get constants(): {|
@@ -50,8 +52,12 @@ const Platform = {
     }
     return false;
   },
-  select: <D, I>(spec: PlatformSelectSpec<D, I>): D | I =>
+  select: <D, N, I>(spec: PlatformSelectSpec<D, N, I>): D | N | I =>
-    'macos' in spec ? spec.macos : spec.default,
+    'macos' in spec
+      ? spec.macos
+      : 'native' in spec
+      ? spec.native
+      : spec.default,
 };
 
 module.exports = Platform;