npm error Unexpected end of JSON input while parsing near '...},"2.2.1":{"name":"vu'

在npm install时报错，错误是：error Unexpected end of JSON input while parsing near '...},"2.2.1":{"name":"vu'

解决方法：先清除缓存，再重新安装

清除缓存
npm cache clean --force

重新安装
npm install，或安装制定插件npm install -g @angular/cli