1.新电脑跑augnlar项目报错，原因是明显的，没有装angular工具.顺便把ionic工具也装了；
2.先安装我要用的ionic和cordova工具
3.报错，报错信息如下：
Versions of @angular/compiler-cli and typescript could not be determined.
The most common reason for this is a broken npm install.
Please make sure your package.json contains both @angular/compiler-cli and typescript in
devDependencies, then delete node_modules and package-lock.json (if you have one) and
run npm install again.
按照报错的建议，可能是npm没有装全，装了一部分，是残缺品，采取措施如下：
1.删除node_modules文件夹
2.如果有package-lock.json文件，删除之；
3.重新安装npm，在Terminal输入
npm install
4.ng serve –open(或者ng serve -o) ,编译成功；
