npm ERR! code ERESOLVE npm ERR! ERESOLVE could not resolve npm ERR! Vue开发中安装库经常报错

vue项目安装依赖提示如下错误：

G:\Vue\app>npm install --save less less-loader
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! Conflicting peer dependency: eslint-plugin-vue@7.20.0
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\Administrator\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\Administrator\AppData\Local\npm-cache\_logs\2023-01-05T08_18_13_244Z-debug-0.log

解决方案

在安装内容的命令后面加上

--legacy-peer-deps

在NPM v7中，现在默认安装peerDependencies。在很多情况下，这会导致版本冲突，从而中断安装过程。--legacy-peer-deps标志是在v7中引入的，目的是绕过peerDependency自动安装；它告诉 NPM 忽略项目中引入的各个modules之间的相同modules但不同版本的问题并继续安装，保证各个引入的依赖之间对自身所使用的不同版本modules共存。

完整命令如下：

G:\Vue\app>npm install --save less less-loader --legacy-peer-deps