"export 'watchEffect' was not found in 'vue'

操作：运行npm run serve

bug重现：

解决：

博客

版本错误。将vuecli4换成vuecli3

标签：npm,vuecli4,vue,run,vuecli3,serve,watchEffect,found
来源： https://www.cnblogs.com/Strugglinggirl/p/16425476.html