npm install:Could not resolve dependency：peer... 原因和解决方案

npm install报错； 报错日志如下：

npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR!
npm ERR! While resolving: @vue/eslint-config-standard@6.1.0
npm ERR! Found: eslint-plugin-vue@8.7.1
npm ERR! node_modules/eslint-plugin-vue
npm ERR!   dev eslint-plugin-vue@"^8.0.3" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer eslint-plugin-vue@"^7.0.0" from @vue/eslint-config-standard@6.1.0
npm ERR! node_modules/@vue/eslint-config-standard
npm ERR!   dev @vue/eslint-config-standard@"^6.1.0" from the root project
npm ERR!
npm ERR! node_modules/eslint-plugin-vue
npm ERR!   peer eslint-plugin-vue@"^7.0.0" from @vue/eslint-config-standard@6.1.0
npm ERR!   node_modules/@vue/eslint-config-standard
npm ERR!     dev @vue/eslint-config-standard@"^6.1.0" 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:\Users\AB123\AppData\Local\npm-cache\eresolve-report.txt for a full report.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\AB123\AppData\Local\npm-cache\_logs\2023-01-24T03_08_49_805Z-debug-0.log

上述报错日志中有个关键字眼：this command with --force, or --legacy-peer-deps

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.

那么npm：何时使用–force和–legacy-peer-deps？

–force : 会无视冲突，并强制获取远端npm库资源，即使本地有资源也会覆盖掉
–legacy-peer-deps：安装时忽略所有peerDependencies，忽视依赖冲突，已有的依赖不会覆盖。

建议用–legacy-peer-deps 比较保险一点，反正我用了就安装成功了。

比如原本的命令为 npm i vuex-persistedstate ，改为npm i vuex-persistedstate --legacy-peer-deps即可，其余同样如此。