CODEWITHSUNDEEP
angularmigration
Juri
Juri

Reputation: 1741

Can't build after angular migration from 5 to 6 - Cannot find module 'typescript'

I'm migrating angular application from 5 to 6. Run

ng update @angular/cliand ng update @angular/core

But now if i run ng build, i get this error

Cannot find module 'typescript' from 'C:\..\App'
Error: Cannot find module 'typescript' from 'C:\..\App'
    at Function.module.exports [as sync] (C:\..\App\MyApp\node_modules\resolve\lib\sync.js:42:15)
    at resolveProjectModule (C:\..\App\MyApp\node_modules\@angular-devkit\build-angular\src\angular-cli-files\utilities\require-project-module.js:15:20)
    at Object.requireProjectModule (C:\..\App\MyApp\node_modules\@angular-devkit\build-angular\src\angular-cli-files\utilities\require-project-module.js:20:20)
    at BrowserBuilder.buildWebpackConfig (C:\..\App\MyApp\node_modules\@angular-devkit\build-angular\src\browser\index.js:103:52)
    at Observable.rxjs_1.Observable.obs [as _subscribe] (C:\..\App\MyApp\node_modules\@angular-devkit\build-angular\src\browser\index.js:35:38)
    at Observable._trySubscribe (C:\..\App\MyApp\node_modules\rxjs\internal\Observable.js:43:25)
    at Observable.subscribe (C:\..\App\MyApp\node_modules\rxjs\internal\Observable.js:29:22)
    at C:\..\App\MyApp\node_modules\rxjs\internal\util\subscribeTo.js:22:31
    at Object.subscribeToResult (C:\..\App\MyApp\node_modules\rxjs\internal\util\subscribeToResult.js:7:45)
    at MergeMapSubscriber._innerSub (C:\..\App\MyApp\node_modules\rxjs\internal\operators\mergeMap.js:75:38)
    at MergeMapSubscriber._tryNext (C:\..\App\MyApp\node_modules\rxjs\internal\operators\mergeMap.js:72:14)
    at MergeMapSubscriber._next (C:\..\App\MyApp\node_modules\rxjs\internal\operators\mergeMap.js:55:18)
    at MergeMapSubscriber.Subscriber.next (C:\..\App\MyApp\node_modules\rxjs\internal\Subscriber.js:64:18)
    at TapSubscriber._next (C:\..\App\MyApp\node_modules\rxjs\internal\operators\tap.js:62:26)
    at TapSubscriber.Subscriber.next (C:\..\App\MyApp\node_modules\rxjs\internal\Subscriber.js:64:18)
    at MergeMapSubscriber.notifyNext (C:\..\App\MyApp\node_modules\rxjs\internal\operators\mergeMap.js:84:26)

package.json includes"typescript": ">=2.7.0 <2.8.0" in devDependencies

Cleaned npm cache and reinstalled all packages but it didn't help.

Anybody with same issues?

Upvotes: 9

Views: 9413

Answers (2)

Beniamin
Beniamin

Reputation: 3228

I've spent way too much time for this. Due to specific folder structure the problem was with root path inside angular.json. It pointed to .. which was 'outside' of the project instead of root folder.

Upvotes: 0

Juri
Juri

Reputation: 1741

Reinstall typescript cleanly

- npm uninstall -g typescript
- npm uninstall typescript
- npm install -g typescript
- npm install [email protected]

Upvotes: 17

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