在使用“create-react-app”创建了一个 React 应用程序之后,事情一直很成功。我做了一个工作 react 项目。但是现在我正在 Jest 实现单元测试。
使用 npm 安装:'npm install --save-dev jest' 然后运行:npm ls jest 我注意到 react-script 正在寻找一个明显较旧的 jest 版本。
package.json:
"dependencies": {
"react": "^16.8.1",
"react-dom": "^16.8.1",
"react-redux": "^6.0.0",
"react-scripts": "2.1.5",
"redux": "^4.0.1"
},
"devDependencies": {
"jest": "^24.7.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "jest",
"eject": "react-scripts eject"
}
npm ls jest 结果:
+-- jest@24.7.1
`-- react-scripts@2.1.5
`-- jest@23.6.0
npm 启动错误:
There might be a problem with the project dependency tree.
It is likely not a bug in Create React App, but something you need to fix
locally.
The react-scripts package provided by Create React App requires a
dependency:
"jest": "23.6.0"
Don't try to install it manually: your package manager does it
automatically.
However, a different version of jest was detected higher up in the tree:
C:\Users\userName\sample js codes\redux\songs\node_modules\jest (version:
24.7.1)
有解决这个依赖版本问题的方案吗?
最佳答案
Create-react-app 内置 Jest,无需额外安装。
您现在有版本冲突,因为您另外安装了它。 要修复它,请将您的更改还原到 package.json。
关于javascript - react 脚本和 jest 版本 24.7.1 之间的冲突,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55630841/