[Flow] Clean up react-native for Flow v0.15.0

Examples/Movies/getStyleFromScore.js

@@ -22,7 +22,9 @@ var {
 
 var MAX_VALUE = 200;
 
-function getStyleFromScore(score: number): {color: string} {
+import type { StyleObj } from 'StyleSheetTypes';
+
+function getStyleFromScore(score: number): StyleObj {
   if (score < 0) {
     return styles.noScore;
   }

Libraries/Devtools/setupDevtools.js

@@ -72,7 +72,9 @@ function setupDevtools() {
   }
 
   function handleMessage(evt) {
-    var data;
+    // It's hard to handle JSON in a safe manner without inspecting it at
+    // runtime, hence the any
+    var data: any;
     try {
       data = JSON.parse(evt.data);
     } catch (e) {

Libraries/Network/NetInfo.js

@@ -138,6 +138,23 @@ type ConnectivityStateAndroid = $Enum<{
 
 var _subscriptions = new Map();
 
+if (Platform.OS === 'ios') {
+  var _isConnected = function(
+    reachability: ReachabilityStateIOS
+  ): bool {
+    return reachability !== 'none' &&
+      reachability !== 'unknown';
+  };
+} else if (Platform.OS === 'android') {
+  var _isConnected = function(
+      connectionType: ConnectivityStateAndroid
+    ): bool {
+    return connectionType !== 'NONE' && connectionType !== 'UNKNOWN';
+  };
+}
+
+var _isConnectedSubscriptions = new Map();
+
 var NetInfo = {
   addEventListener: function (
     eventName: ChangeEventName,
@@ -175,29 +192,7 @@ var NetInfo = {
     });
   },
 
-  isConnected: {},
-
-  isConnectionMetered: {},
-};
-
-if (Platform.OS === 'ios') {
-  var _isConnected = function(
-    reachability: ReachabilityStateIOS
-  ): bool {
-    return reachability !== 'none' &&
-      reachability !== 'unknown';
-  };
-} else if (Platform.OS === 'android') {
-  var _isConnected = function(
-      connectionType: ConnectivityStateAndroid
-    ): bool {
-    return connectionType !== 'NONE' && connectionType !== 'UNKNOWN';
-  };
-}
-
-var _isConnectedSubscriptions = new Map();
-
-NetInfo.isConnected = {
+  isConnected: {
     addEventListener: function (
       eventName: ChangeEventName,
       handler: Function
@@ -229,6 +224,9 @@ NetInfo.isConnected = {
         (connection) => _isConnected(connection)
       );
     },
+  },
+
+  isConnectionMetered: ({}: {} | (callback:Function) => void),
 };
 
 if (Platform.OS === 'android') {

Libraries/StyleSheet/StyleSheetTypes.js

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule StyleSheetTypes
+ * @flow
+ */
+'use strict';
+
+type Atom = number | bool | Object | Array<?Atom>;
+export type StyleObj = Atom | Array<?StyleObj>;

Libraries/StyleSheet/flattenStyle.js

@@ -14,8 +14,7 @@
 var StyleSheetRegistry = require('StyleSheetRegistry');
 var invariant = require('invariant');
 
-type Atom = number | bool | Object | Array<?Atom>
-type StyleObj = Atom | Array<?StyleObj>
+import type { StyleObj } from 'StyleSheetTypes';
 
 function getStyle(style) {
   if (typeof style === 'number') {