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伙计们，我被困在这里了，为了运行应用程序，我已经降级了我的节点和 npm

目前我的节点版本是 8.4.0 而 npm 是 4.6.1 我做的步骤是

  1. create-react-native-app SampleApp
  2. cd SampleApp
  3. npm 运行 ios

结果应用程序无法正常工作

Purushothams-MacBook-Pro:SampleApp Purushotham$ npm run ios

SampleApp@0.1.0 ios /Users/Purushotham/Desktop/Demo/SampleApp
react-native-scripts ios
21:59:37: Starting packager...
21:59:39: Error starting packager: Error: EACCES: permission denied, open '/Users/Purushotham/Desktop/Demo/SampleApp/.expo/packager-info.json'
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! SampleApp@0.1.0 ios: react-native-scripts ios
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the SampleApp@0.1.0 ios script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /Users/Purushotham/.npm/_logs/2017-11-12T16_29_39_085Z-debug.log

在我的 macbook 中执行sudo chmod -R 777 ~/.expo/和安装 expo.io 应用程序后，它会像这样卡住。你可以看到下面的图片

在此处输入图像描述

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