// error deploy to vercel npm ERR! code ERESOLVE npm ERR! ERESOLVE could not resolve npm ERR! npm ERR! While resolving: @testing-library/react@13.4.0 npm ERR! Found: react@17.0.0 npm ERR! node_modules/react npm ERR! react@"^17.0.0" from the root project npm ERR! peer react@">=16.8.0" from @emotion/react@11.10.6 npm ERR! node_modules/@emotion/react npm ERR! @emotion/react@"^11.10.6" from the root project npm ERR! peer @emotion/react@"^11.0.0-rc.0" from @emotion/styled@11.10.6 npm ERR! node_modules/@emotion/styled npm ERR! @emotion/styled@"^11.10.6" from the root project npm ERR! 3 more (@mui/material, @mui/styled-engine, @mui/system) npm ERR! 3 more (@mui/material, @mui/styled-engine, @mui/system) npm ERR! 22 more (@emotion/styled, ...) npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer react@"^18.0.0" from @testing-library/react@13.4.0 npm ERR! node_modules/@testing-library/react npm ERR! @testing-library/react@"^13.4.0" from the root project npm ERR! npm ERR! Conflicting peer dependency: react@18.2.0 npm ERR! node_modules/react npm ERR! peer react@"^18.0.0" from @testing-library/react@13.4.0 npm ERR! node_modules/@testing-library/react npm ERR! @testing-library/react@"^13.4.0" 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 /vercel/.npm/eresolve-report.txt for a full report. npm ERR! A complete log of this run can be found in: npm ERR! /vercel/.npm/_logs/2023-04-23T19_05_45_098Z-debug-0.log Error: Command "npm install" exited with 1`
我将 React 版本从 18.2.0 降级到 17.0.0 仍然无法正常工作
文件package.json：
{
"name": "popsocket",
"version": "0.1.0",
"private": true,
"dependencies": {
"@emotion/react": "^11.10.6",
"@emotion/styled": "^11.10.6",
"@mui/icons-material": "^5.11.16",
"@mui/material": "^5.12.1",
"@mui/styles": "^5.12.0",
"@reduxjs/toolkit": "^1.9.5",
"@testing-library/jest-dom": "^5.16.5",
"@testing-library/react": "^13.4.0",
"@testing-library/user-event": "^13.5.0",
"axios": "^1.3.6",
"classnames": "^2.3.2",
"formik": "^2.2.9",
"json-server": "^0.17.3",
"react": "^17.0.0",
"react-dom": "^17.0.0",
"react-redux": "^8.0.5",
"react-router-dom": "^6.10.0",
"react-scripts": "5.0.1",
"react-slick": "^0.29.0",
"react-toastify": "^9.1.2",
"slick-carousel": "^1.8.1",
"styled-components": "^5.3.10",
"web-vitals": "^2.1.4",
"yup": "^1.1.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
} 
无需降级您的 React 版本 - 将其设置回您拥有的版本。
打开 Vercel 并转到您遇到此问题的项目。
在项目的顶部菜单上，单击
Settings。滚动到
构建和开发设置。单击
install命令上的Override按钮，并附加--legacy-peer-deps。例如。安装命令：npm install --legacy-peer-deps。保存更改并重新部署项目。