npm install 出错，按照版本不匹配解决
一、现象
npm install
npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead.
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: panshi-main-web@0.1.0
npm ERR! Found: eslint@6.8.0
npm ERR! node_modules/eslint
npm ERR! dev eslint@"^6.8.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer eslint@">=7.0.0" from eslint-config-prettier@8.10.0
npm ERR! node_modules/eslint-config-prettier
npm ERR! dev eslint-config-prettier@"^8.4.0" 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!
npm ERR! See C:\UserData\Local\npm-cache\eresolve-report.txt for a full report.
二、解决方式：
输入 npm i --legacy-peer-deps 回车解决（记得重启服务）
方法一：删除C:\Users\Administrator下的.npmrc文件即可（可能会没有，执行方法二）
方法二：删除C:\Users\Administrator\AppData\Roaming下边的npm、npm-cache
方法三：删除C:\Users\Administrator下的.npm_repl_history文件
之后重新安装node.js