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解决npm ERR! code ERESOLVE -npm ERR! ERESOLVE could not resolve

npm err! code eresolve npm err! eresolve could not resolve npm err! npm err!

当使用一份vue源码开发项目时,npm install 报错了

npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR!
npm ERR! While resolving: vue-admin-template@4.4.0
npm ERR! Found: webpack@4.46.0
npm ERR! node_modules/webpack
npm ERR! webpack@"^4.0.0" from @vue/cli-plugin-babel@4.4.4
npm ERR! node_modules/@vue/cli-plugin-babel
npm ERR! dev @vue/cli-plugin-babel@"4.4.4" from the root project
npm ERR! webpack@"^4.0.0" from @vue/cli-service@4.4.4
npm ERR! node_modules/@vue/cli-service
npm ERR! dev @vue/cli-service@"4.4.4" from the root project
npm ERR! peer @vue/cli-service@"^3.0.0 || ^4.0.0-0" from @vue/cli-plugin-babel@4.4.4
npm ERR! node_modules/@vue/cli-plugin-babel
npm ERR! dev @vue/cli-plugin-babel@"4.4.4" from the root project
npm ERR! 2 more (@vue/cli-plugin-eslint, @vue/cli-plugin-unit-jest)
npm ERR! 2 more (@vue/cli-plugin-eslint, html-webpack-plugin)
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! dev less-loader@"^11.1.0" from the root project
npm ERR!
npm ERR! Conflicting peer dependency: webpack@5.88.2
npm ERR! node_modules/webpack
npm ERR! peer webpack@"^5.0.0" from less-loader@11.1.3
npm ERR! node_modules/less-loader
npm ERR! dev less-loader@"^11.1.0" 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\63089\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\63089\AppData\Local\npm-cache_logs\2023-08-04T04_52_18_223Z-debug-0.log

出错的原因是

  1. 项目使用了 vue-admin-template@4.4.0
  2. 项目需要 webpack@4.46.0,在 @vue/cli-plugin-babel@4.4.4@vue/cli-service@4.4.4 中指定了这个版本。
  3. less-loader 的依赖发生了冲突。项目需要 less-loader@"^11.1.0",但与此冲突的是 webpack@5.88.2,它需要 less-loader@"^11.1.3"

降低less-loader的版本,解决了

"less-loader": "^7.x.x",

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