create-react-app创建项目react 19 报错

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问题描述 npx create-react-app react-ts --template typescript 报依赖错 如下

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Installing template dependencies using npm… npm error code ERESOLVE npm error ERESOLVE unable to resolve dependency tree npm error npm error While resolving: react-ts@0.1.0 npm error Found: react@19.0.0 npm error node_modules/react npm error react@“^19.0.0” from the root project npm error npm error Could not resolve dependency: npm error peer react@“^18.0.0” from @testing-library/react@13.4.0 npm error node_modules/@testing-library/react npm error @testing-library/react@“^13.0.0” from the root project npm error npm error Fix the upstream dependency conflict, or retry npm error this command with --force or --legacy-peer-deps npm error to accept an incorrect (and potentially broken) dependency resolution. npm error npm error

问题原因及解决办法

查看package.json , 用的是最新的 19,可能是很多版本不兼容的问题

image.png 安装 18

cd react-ts
npm uninstall react react-dom
npm install react@18 react-dom@18

npm start,成功

有些此时npm start 还是会报错,

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**那就再执行下 上面的报错 **:

npm install --no-audit --save @testing-library/jest-dom@^5.14.1 @testing-library/react@^13.0.0 @testing-library/user-event@^13.2.1 web-vitals@^2.1.0

使用 typscript模板会错

如上 npx create-react-app react-ts --template typescript 除解决 react18问题外, 它还是报错 报错如下 image.png Compiled with problems:

×

ERROR in ./src/index.tsx 7:0-24

Module not found: Error: Can't resolve './App' in '/Users/leelxy/Desktop/code/learn/lee-qu/react-ts/src'

ERROR in ./src/index.tsx 8:0-48

Module not found: Error: Can't resolve './reportWebVitals' in '/Users/leelxy/Desktop/code/learn/lee-qu/react-ts/src'

> > 问题原因,

如果不接后缀, 默认是JSX, 或js的, 但这里使用了typescript 模板, 它们的名字都使用了 tsx , ts 作后缀, 故识别不了 直接在对应报错模块中加上后缀名即可

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成功啦~~~

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