npm install vue-router -S
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: webgis-sample1@0.1.0     
npm ERR! Found: vue@2.6.14
npm ERR! node_modules/vue
npm ERR!   vue@"^2.6.14" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! node_modules/vue-router
npm ERR!   vue-router@"*" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!

查阅其他人的帖子，发现vue和vue-router需要安装兼容的版本

改为以下代码,指定旧版本即可

npm install --legacy-peer-deps vue-router@3.5.2

# vue.js # npm # 前端
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