Why does "npm start" give me error when i try run my app?

Question

i dont understand why i got this error every time when i try run "npm start".

> @ start E:\ReactNative\navigation_app
> expo start

internal/modules/cjs/loader.js:895
    throw err;
    ^

Error: Cannot find module 'C:\Users\Roei\AppData\Roaming\npm\node_modules\expo-cli\bin\expo.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:892:15)
    at Function.Module._load (internal/modules/cjs/loader.js:785:27)
    at Function.Module.runMain (internal/modules/cjs/loader.js:1143:12)
    at internal/main/run_main_module.js:16:11 {
  code: 'MODULE_NOT_FOUND',
  requireStack: []
}
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\Roei\AppData\Roaming\npm-cache\_logs\2019-11-16T17_19_40_408Z-debug.log

this is my package.json and try to figure out whats wrong there

{
  "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": "^35.0.0",
    "expo-font": "^7.0.0",
    "react": "16.8.3",
    "react-dom": "16.8.3",
    "react-native": "https://github.com/expo/react-native/archive/sdk-35.0.0.tar.gz",
    "react-native-web": "^0.11.7"
  },
  "devDependencies": {
    "babel-preset-expo": "^7.1.0"
  },
  "private": true
}

i would like to solve that issue and to understand whats worng .

did you install? npm install ?

azium
– azium

2019-11-16 17:36:51 +00:00
Commented Nov 16, 2019 at 17:36 — azium
– azium, Commented Nov 16, 2019 at 17:36
yes i did but doesnt work

roei
– roei

2019-11-16 17:50:52 +00:00
Commented Nov 16, 2019 at 17:50 — roei
– roei, Commented Nov 16, 2019 at 17:50

Dan Starns · Accepted Answer · 2019-11-16 17:41:32Z

1

You need to install expo-cli globally npm i -g expo-cli

answered Nov 16, 2019 at 17:41

Dan Starns

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6 Comments

Dan Starns Over a year ago

@roei have you got C:\Users\Roei\AppData\Roaming\npm in your 'Path' environment variables?

Dan Starns Over a year ago

@roei sorry I don't understand your reply. is that "yes I have C:\Users\Roei\AppData\Roaming\npm in my 'Path' environment variables" or "no i don't how can it do that"?

roei Over a year ago

i don't know how can i do that, please let me know what should i do .

Dan Starns Over a year ago

try this you need to make sure C:\Users\Roei\AppData\Roaming\npm is in 'Path'

roei Over a year ago

i did it also and it show me the same error ..so whats next ?

|

Curious96 · Accepted Answer · 2019-11-16 18:19:19Z

0

you need to install Expo. Run an npm install or install expo globally

answered Nov 16, 2019 at 18:19

Curious96

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Comments

Keremcan Buyuktaskin · Accepted Answer · 2019-11-16 23:30:31Z

0

You don't have Expo-CLI installed globally, that is why you are getting the error at your local project. It needs Expo module to work, but can't find it. So run npm install -g expo-cli as it has been said, if it does not install paste the error code here.

answered Nov 16, 2019 at 23:30

Keremcan Buyuktaskin

3374 silver badges14 bronze badges

3 Comments

roei Over a year ago

do you want the log of the run ? coz its long stuff

roei Over a year ago

Error: Cannot find module 'C:\Users\Roei\AppData\Roaming\npm\node_modules\expo-cli\bin\expo.js'

Keremcan Buyuktaskin Over a year ago

If you can't install latest version of Expo, try this: npm i -g [email protected] It is an older version but it will probably install. Latest version is a bit problematic.

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