error in ./node_modules/vue-router/dist/vue-router.mjs“export ‘computed‘ was not found in ‘vue‘

 

错误日志

 ERROR  Failed to compile with 47 errors                                                                                
 error  in ./node_modules/vue-router/dist/vue-router.mjs

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

 error  in ./node_modules/vue-router/dist/vue-router.mjs

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

 error  in ./node_modules/vue-router/dist/vue-router.mjs

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

 error  in ./node_modules/vue-router/dist/vue-router.mjs

错误截图

错误原因

npm自动下载vue-router时下载的是最新版（vue-router版本太高和vue2起冲突了）

在package.json中找到

解决方法

卸载4版本的router 安装指定版本的vue-router即可，可以安装3.5.2 的vue-router（亲测可用 ）

卸载命令：npm uninstall vue-router
安装命令：npm i vue-router@3.5.2

最后重新启动项目即可