React native wrapItem（…）。从世博会开始，反应自然

今天，我用

create react native app

创建了一个新项目，安装依赖项后，CRNA说用

expo start

启动项目，运行此命令后，一切似乎都很好，chrome打开了一个页面

localhost:19002

，但一分钟后，此页面被停止，控制台上显示：

  [12:26:47] Starting project at D:\Try\eleventh
  [12:27:13] Warning: Problem validating app.json: Unable to perform cache 
  refresh for C:\Users\Mohammad\AppData\Local\Expo\schema-30.0.0.json: 
  Error: connect ETIMEDOUT 35.202.142.166:443.
  [12:27:39] Starting Metro Bundler on port 19001.
  [12:27:39] Metro Bundler ready.
  [12:27:40] Opening on Android device
  [12:27:40] Successfully ran `adb reverse`. Localhost URLs should work on 
  the connected Android device.
  [12:27:44] Tunnel ready.
  [12:27:44] Expo DevTools is running at http://localhost:19002
  [12:27:44] Opening DevTools in the browser... (press shift-d to disable)

   exp://192.168.89.2:19000





























    To run the app with live reloading, choose one of:
   [12:27:44] wrapItem(...).trimStart is not a function
   [12:27:44] Set EXPO_DEBUG=true in your env to view the stack trace.

  wrapItem(...).trimStart is not a function

正如你看到的，上面写着：

  [12:26:47] Starting project at D:\Try\eleventh
  [12:27:13] Warning: Problem validating app.json: Unable to perform cache 
  refresh for C:\Users\Mohammad\AppData\Local\Expo\schema-30.0.0.json: 
  Error: connect ETIMEDOUT 35.202.142.166:443.
  [12:27:39] Starting Metro Bundler on port 19001.
  [12:27:39] Metro Bundler ready.
  [12:27:40] Opening on Android device
  [12:27:40] Successfully ran `adb reverse`. Localhost URLs should work on 
  the connected Android device.
  [12:27:44] Tunnel ready.
  [12:27:44] Expo DevTools is running at http://localhost:19002
  [12:27:44] Opening DevTools in the browser... (press shift-d to disable)

   exp://192.168.89.2:19000





























    To run the app with live reloading, choose one of:
   [12:27:44] wrapItem(...).trimStart is not a function
   [12:27:44] Set EXPO_DEBUG=true in your env to view the stack trace.

  wrapItem(...).trimStart is not a function

这是一些有用的信息：

创建本地应用程序版本：2.0.2

节点版本：v8.11.3

博览会版本：2.2.0

npm版本：6.4.0

---

纱线版本：1.10.1

尝试使用更高版本的节点。我在使用节点版本8时也遇到了这个问题。使用

nvm

将其与节点12碰撞成功。

您找到解决方案了吗？