Angular2官方QuickStart运行错误问题

官方向导：https://angular.cn/docs/ts/latest/quickstart.html

参考：http://stackoverflow.com/questions/34335340/angular2-quickstart-npm-start-is-not-working-correctly

错误信息：Failed at the angular2-quickstart@1.0.0 start script 'tsc && concurrently "tsc -w" "lite-server"

解决：

npm install -g concurrently lite-server typescript

如果运行仍然报错，则再执行一次
npm install