ng-Serve a échoué avec le fil comme gestionnaire de paquets

Question

Je mis yarn comme gestionnaire de paquets pour angular-cli, quand je lance ng new my-app il termine avec succès

Installing packages for tooling via yarn. 
Installed packages for tooling via yarn. 

mais quand je lance ng-serve je reçois le message d'erreur suivant:

The "@angular/compiler-cli" package was not properly installed. Error: Error: Cannot find module '@angular/compiler-cli'Error: The "@angular/compiler-cli" package was not properly installed. Error: Error: Cannot find module '@angular/compiler-cli' 
    at Object.<anonymous> (C:\Users\Hadi\AppData\Local\Yarn\config\global\node_modules\@ngtools\webpack\src\index.js:14:11) 
    at Module._compile (module.js:570:32) 
    at Object.Module._extensions..js (module.js:579:10) 
    at Module.load (module.js:487:32) 
    at tryModuleLoad (module.js:446:12) 
    at Function.Module._load (module.js:438:3) 
    at Module.require (module.js:497:17) 
    at require (internal/module.js:20:19) 
    at Object.<anonymous> (C:\Users\Hadi\AppData\Local\Yarn\config\global\node_modules\@angular\cli\tasks\eject.js:10:19) 
    at Module._compile (module.js:570:32) 
    at Object.Module._extensions..js (module.js:579:10) 
    at Module.load (module.js:487:32) 
    at tryModuleLoad (module.js:446:12) 
    at Function.Module._load (module.js:438:3) 
    at Module.require (module.js:497:17) 
    at require (internal/module.js:20:19) 
    at Object.<anonymous> (C:\Users\Hadi\AppData\Local\Yarn\config\global\node_modules\@angular\cli\models\webpack-configs\styles.js:6:17) 
    at Module._compile (module.js:570:32) 
    at Object.Module._extensions..js (module.js:579:10) 
    at Module.load (module.js:487:32) 
    at tryModuleLoad (module.js:446:12) 
    at Function.Module._load (module.js:438:3) 

J'ai angular-clie la version 1.4.4 et la version yarn 1.1.0

Answer 1

Effectuez les étapes suivantes:

npm install -g yarn 
ng set --global packageManager=yarn 

projet exécution à l'aide

yarn start