从 5 到 6 的角度迁移后无法构建 - 找不到模块“打字稿”答案

【问题标题】：Can't build after angular migration from 5 to 6 - Cannot find module 'typescript'从 5 到 6 的角度迁移后无法构建 - 找不到模块“打字稿”
【发布时间】：2018-11-24 03:19:34
【问题描述】：

我正在将 Angular 应用程序从 5 迁移到 6。运行

ng update @angular/cli和ng update @angular/core

但现在如果我运行 ng build，我会收到此错误

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 在 devDependencies 中包含"typescript": ">=2.7.0 <2.8.0"

清理 npm 缓存并重新安装所有软件包，但没有帮助。

有人遇到同样的问题吗？

【问题讨论】：

相关：stackoverflow.com/questions/44611526/…
似乎不一样 .angular-cli.json 不再需要了。重新安装没有帮助
您是否按照update.angular.io 中的所有步骤操作？
是的。最后一步 - rxjs 迁移似乎不会影响这个问题。但我不确定
我也遇到了同样的问题，你有没有解决？

标签： angular migration

【解决方案1】：

干净地重新安装打字稿

- npm uninstall -g typescript
- npm uninstall typescript
- npm install -g typescript
- npm install typescript@2.7.2

【讨论】：