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First i started with installing npm (version ) then expo cli (version ) then i initialise a project normaly then when i start my project with npm start and also expo start a get this message : 

Cannot determine which native SDK version your project uses because the module `expo` is not installed. Please install it with `yarn add expo` and try again.
ConfigError: Cannot determine which native SDK version your project uses because the module `expo` is not installed. Please install it with `yarn add expo` and try again.
at Object.getExpoSDKVersion (C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\config\src\Project.ts:22:9)
at ensureConfigHasDefaultValues (C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\config\src\Config.ts:419:22)
at fillAndReturnConfig (C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\config\src\Config.ts:101:10)
at getConfig (C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\config\src\Config.ts:137:10)
at configureProjectAsync (C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\src\commands\start.ts:288:25)
at action (C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\src\commands\start.ts:164:34)
at C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\src\commands\start.ts:341:16
at Command.<anonymous> (C:\Users\BILAL\AppData\Roaming\npm\node_modules\expo-cli\src\exp.ts:82:7)
npm ERR! code ELIFECYCLE

npm ERR! errno 1 npm ERR! @ start: expo start npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the @ start 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! C:\Users\BILAL\AppData\Roaming\npm-cache_logs\2020-05-17T00_34_22_028Z-debug.log

also i worked with react native and react-cli before for a simple app and it worked but this time i tried for a week without result

thank you so much

Bilal Benzahra
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  • Did you install expo before start? => "npm install expo" – Maycon Mesquita May 17 '20 at 00:52
  • sorry node v : 12.16.3 and npm v : 6.14.4 – Bilal Benzahra May 17 '20 at 00:59
  • Please, install expo module, type this on terminal: npm install expo – Maycon Mesquita May 17 '20 at 01:04
  • @MayconMesquita yes i did and a get this message : – Bilal Benzahra May 17 '20 at 01:13
  • npm ERR! code EPERM npm ERR! syscall unlink npm ERR! path G:\APP\congres\node_modules\.staging\@babel\parser-c75ab002\LICENSE npm ERR! errno -4048 npm ERR! Error: EPERM: operation not permitted, unlink 'G:\APP\congres\node_modules\.staging\@babel\parser-c75ab002\LICENSE' – Bilal Benzahra May 17 '20 at 01:13
  • this is my package.json : { "main": "node_modules/expo/AppEntry.js", "scripts": { "start": "expo start", "android": "expo start --android", "ios": "expo start --ios", "web": "expo start --web", "eject": "expo eject" }, "dependencies": { "expo": "~37.0.3", "react": "~16.9.0", "react-dom": "~16.9.0", "react-native": "https://github.com/expo/react-native/archive/sdk-37.0.1.tar.gz", "react-native-web": "~0.11.7" }, "devDependencies": { "babel-preset-expo": "~8.1.0", "@babel/core": "^7.8.6" }, "private": true } – Bilal Benzahra May 17 '20 at 01:15
  • That error generally means that a file is being accessed by two different things at 'around' the same time. And 90% of those times it is because of an anti-virus or similar. > Do a "ctrl + Alt + Delete", > Task Manager, > Find all running instances of node server and kill them. > Then, try Install the expo package again. – Maycon Mesquita May 17 '20 at 01:27
  • This github issue can help you, with this last error: https://github.com/phoenixframework/phoenix/issues/2464 – Maycon Mesquita May 17 '20 at 01:35
  • sorry no anti virus even i stoped windows defender to check , thank you @MayconMesquita for your time – Bilal Benzahra May 17 '20 at 18:43
  • I had the same issue in windows and it appeared when i moved my project from C: to D: (or the other way round). Maybe this could help you. Just move the project back to the other partition. – mleister May 17 '20 at 19:56
  • @mleister same thing. thank you guys – Bilal Benzahra May 17 '20 at 22:03
  • i posted an answer maybe you can accept it (and/or vote it up) to help other people :) – mleister May 18 '20 at 05:50

0 Answers0