React Native 0.45.0 正式发布，有重大更新

React Native 继续之前的升级的频率，差不多一个月升级一次。6月7号React Native 0.45.0正式发布。该版本有如下的重大变更：

1，删除 React 的转发和错误导入警告（Remove React forwarding and wrong import warnings）

2，其他更改

Bug 修复

XMLHttpRequest withCredentials defaults to “true” (7c3918b) - @DanielZlotin

Return findNodeHandle to public api (7063261) - @skv-headless

Fix warnings in TouchableHighlight (bd00456) - @zjj010104

新特性

TouchableHighlight needs to set _isMounted false when it unmounts. (d40a7ea) - @sahrens

Custom build options: Move transform options into own property (8533c0d) - @davidaurelio

Work around a false positive isMounted() warning (074c3ce) - @gaearon

CLI: Stronger typing for transformers (73fc439) - @davidaurelio

CLI: Disable no-alert eslint rule for node code (d2505e7) - @davidaurelio

CLI: Get rid of FBism in Config (b9fb229) - @davidaurelio

CLI: Resolve path at callsite rather than in Config.loadFile (edf1774) - @davidaurelio

CLI: Fix Promise resolve callback error (7dd2cd3) - @johnislarry

Fixed default placeholder text color for multiline (cf975bb) - @shergi

Allow calling NativeViewHierarchyManager.addRootView() off the UI thread (20c2ae8) - @AaaChiuuu

FlatList: use $ReadOnlyArray for section stuff (5084e1b) - @sahrens

FlatList: Make section key optional (8d373f3) - @sahrens

FlatList: Many improvements (28aaa88) - @sahrens

FlatList: Fix and optimize VirtualizedList update triggers (52e50af) - @sahrens

FlatList: Made getItem and getItemCount required props (VirtualizedList) (beeffb8) - @mariten

FlatList: Add ListEmptyComponent prop (264d67c) - @Minishlink

FlatList: flipped leading/trailing separators.updateProps (5c7c65e) - @sahrens

FindNodeHandle properly handles ReactCurrentOwner.current Fiber type (909fb72) - @bvaughn

Sync React 16 from alpha 6 to 12 (ef0bd5c) - @bvaughn

Open in editor fix, show tip instead of error (9934131) - @skv-headless

Fix parseFloat mistaken uses of “radix” (37f3ce1) - @zertosh

Add flow to processColor.js (c7e0f56) - @TheSavior

Add method on YellowBox to ignore warnings (a974c14)

Refactor MessageQueue (0a55e42) - @rh389

Order modules in bundle by path. (978592f) - @amnn

更新后问题

如果更新到0.45.0可能会报如下错误：

Installing build/Build/Products/Debug-iphonesimulator/temp.app
An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=2):
Failed to install the requested application
An application bundle was not found at the provided path.
Provide a valid path to the desired application bundle.
Print: Entry, ":CFBundleIdentifier", Does Not Exist

这时候可能需要对版本进行回退，打开项目的package.json文件将依赖会退到0.44.3版本。

"react": "16.0.0-alpha.6",
"react-native": "0.44.3"

删除node-modules文件夹，然后执行npm install。回到0.44版本。