vue/cli4跑单个组件测试

环境

直接跑一个vue组件，正常的命令是这样的

• vue serve src/components/demo1.vue

输出提示：

  Command vue serve requires a global addon to be installed.
  Please run npm i -g @vue/cli-service-global and try again.

再次安装

  npm i -g @vue/cli-service-global