Lenovo@DESKTOP-D50VSUF MINGW64 /f/vue/chapter7 (master)
$ cd hello-vue
Lenovo@DESKTOP-D50VSUF MINGW64 /f/vue/chapter7/hello-vue (master)
$ npm run serve
hello-vue@0.1.0 serve
vue-cli-service serve
'"node"' is not recognized as an internal or external command,
operable program or batch file.