Ionic-cli: 'ionic-app-scripts' is not recognized

[theunreal]

Short description of the problem:

'ionic-app-scripts' is not recognized when trying to ionic serve/build

What behavior are you expecting?

Ionic to build.

Steps to reproduce:

1. I had some computer issues, so I did windows startup fix tool.
2. My computer worked.
3. I tried to run my app again (it worked before) using ionic serve and before build I get the following error:

'ionic-app-scripts' is not recognized as an internal or external command,
operable program or batch file.

npm ERR! Windows_NT 10.0.14393
npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Users\home\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js" "run" "ionic:serve" "--" "--v2" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"
npm ERR! node v6.9.2
npm ERR! npm v4.0.2
npm ERR! code ELIFECYCLE
npm ERR! ionic-hello-world@ ionic:serve: ionic-app-scripts serve "--v2" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the ionic-hello-world@ ionic:serve script 'ionic-app-scripts serve "--v2" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the ionic-hello-world package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! ionic-app-scripts serve "--v2" "--address" "0.0.0.0" "--port" "8100" "--livereload-port" "35729"
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs ionic-hello-world
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls ionic-hello-world
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! c:xampphtdocsthemillnpm-debug.log
There was an error serving your Ionic application: There was an error with the spawned command: serve

Post the output of ionic info below please
ordova CLI: 6.4.0
Ionic Framework Version: 2.0.0-rc.4
Ionic CLI Version: 2.1.18
Ionic App Lib Version: 2.1.9
Ionic App Scripts Version: 0.0.47
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Windows 10
Node Version: v6.9.2
Xcode version: Not installed

[rapropos]

Perhaps related to npm #14626?

[KashifAhmed]

try these 2 step, it's working on my system.

• Run this command on root directory of project: npm install @ionic/app-scripts@latest --save-dev
• Rename .srcappmain.dev.ts with .srcappmain.ts

[ibrahimker]

not working for me

[KashifAhmed]

@ibrahimker can you tell me error description?

[ibrahimker]

@KashifAhmed exactly same problem like posted by theunreal and try your solution, but the problem still happen :(

Edit:
Solved by doing npm rebuild node-sass. Seems that after installing latest app-scripts in my computer, I also need to rebuild the node-sass for correct reference. Thanks Kashif :D

[raju00129]

This is the issue with node_modules, are not installed in your app
Please install node modules in your application
Go to your application root in command line, and enter the following command.
npm install

[agnoam]

but you need to delete node_modules before you typing npm install

[rajeesab]

not working for me..

[toannguyen3105]

Not working for me ;( So sad.

[Hamza-Rahman]

it's solved..( npm install @ionic/app-scripts@latest --save-dev )
but new problem I have faced can not find name 'google'

[Anjat1155]

delete the node_modules, then run npm install
it worked for me

[aliraza-dev]

It usually happens when I move the ionic file to another PC or OS. Just delete node_modules and run npm install. Worked like charm :). Try to use github to transfer file. It's better that way