React项目安装Material UI时遭遇TypeScript版本依赖冲突问题求助

问题背景 #

我在给React项目安装Material UI的时候碰到了依赖冲突的报错，目前我的项目环境是React v18.2.0 + TypeScript v5.2.2，执行的安装命令是：

npm install @mui/material @emotion/react @emotion/styled

报错信息 #

执行命令后得到的完整错误输出如下：

npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR!
npm ERR! While resolving: react-scripts@5.0.1
npm ERR! Found: typescript@5.2.2
npm ERR! node_modules/typescript
npm ERR! peer typescript@">= 2.7" from fork-ts-checker-webpack-plugin@6.5.2
npm ERR! node_modules/fork-ts-checker-webpack-plugin
npm ERR! fork-ts-checker-webpack-plugin@"^6.5.0" from react-dev-utils@12.0.1
npm ERR! node_modules/react-dev-utils
npm ERR! react-dev-utils@"^12.0.1" from react-scripts@5.0.1
npm ERR! node_modules/react-scripts
npm ERR! react-scripts@"5.0.1" from the root project
npm ERR! peer typescript@">=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta" from tsutils@3.21.0
npm ERR! node_modules/tsutils
npm ERR! tsutils@"^3.21.0" from @typescript-eslint/eslint-plugin@5.48.2
npm ERR! node_modules/@typescript-eslint/eslint-plugin
npm ERR! @typescript-eslint/eslint-plugin@"^5.5.0" from eslint-config-react-app@7.0.1
npm ERR! node_modules/eslint-config-react-app
npm ERR! eslint-config-react-app@"^7.0.1" from react-scripts@5.0.1
npm ERR! node_modules/react-scripts
npm ERR! 1 more (the root project)
npm ERR! 1 more (eslint-plugin-jest)
npm ERR! tsutils@"^3.21.0" from @typescript-eslint/type-utils@5.48.2
npm ERR! node_modules/@typescript-eslint/type-utils
npm ERR! @typescript-eslint/type-utils@"5.48.2" from @typescript-eslint/eslint-plugin@5.48.2
npm ERR! node_modules/@typescript-eslint/eslint-plugin
npm ERR! @typescript-eslint/eslint-plugin@"^5.5.0" from eslint-config-react-app@7.0.1
npm ERR! node_modules/eslint-config-react-app
npm ERR! 1 more (eslint-plugin-jest)
npm ERR! 1 more (@typescript-eslint/typescript-estree)
npm ERR! 1 more (the root project)
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peerOptional typescript@"^3.2.1 || ^4" from react-scripts@5.0.1
npm ERR! node_modules/react-scripts
npm ERR! react-scripts@"5.0.1" from the root project
npm ERR!
npm ERR! Conflicting peer dependency: typescript@4.9.5
npm ERR! node_modules/typescript
npm ERR! peerOptional typescript@"^3.2.1 || ^4" from react-scripts@5.0.1
npm ERR! node_modules/react-scripts
npm ERR! react-scripts@"5.0.1" 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.

我的项目依赖配置 #

项目package.json里的依赖如下：

"dependencies": {
  "@arcgis/core": "^4.26.5",
  "@azure/msal-browser": "^2.32.2",
  "@azure/msal-react": "^1.5.2",
  "@esri/calcite-components-react": "^1.0.5",
  "@testing-library/jest-dom": "^5.16.5",
  "@testing-library/react": "^13.4.0",
  "@testing-library/user-event": "^13.5.0",
  "@types/jest": "^29.5.8",
  "@types/node": "^20.9.2",
  "@types/react": "^18.2.37",
  "@types/react-dom": "^18.2.15",
  "bootstrap-icons": "^1.10.3",
  "http-proxy-middleware": "^2.0.6",
  "react": "^18.2.0",
  "react-dom": "^18.2.0",
  "react-router-dom": "^6.8.2",
  "react-scripts": "5.0.1",
  "recharts": "^2.5.0",
  "typescript": "^5.2.2",
  "web-vitals": "^2.1.4"
},
"devDependencies": {
  "eslint-config-react-app": "^7.0.1",
  "jest-editor-support": "^31.0.1"
}

我的疑问 #

我看报错里提到有的依赖要求TypeScript >=2.7，我现在用的5.2.2明明远高于这个版本啊，为啥还会触发依赖冲突？是不是我没读懂报错的核心原因？

更新&解决方案 #

感谢管理员的建议，我按照以下步骤顺利解决了问题：

• 步骤1：修改package.json里的TypeScript版本，将typescript设置为^4.x.x（比如^4.9.5）
• 步骤2：删除项目根目录下的package-lock.json文件和node_modules文件夹
• 步骤3：执行命令npm install，确保项目完全切换到TypeScript 4版本
• 步骤4：再次执行Material UI的安装命令：npm install @mui/material @emotion/react @emotion/styled

备注：内容来源于stack exchange，提问作者LNX