ios - 。为什么我收到错误消息？构建一个React应用

Question

我想开始与React一起练习制作一个简单的应用程序。继续前进，将自制软件和节点下载到我的计算机上。当我使用yarn install构建我的应用程序时，到最后它告诉您快乐的黑客攻击。但是，当我运行yarn start时，它给了我一条错误消息。

-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:

 "eslint": "^6.6.0"

Don't try to install it manually: your package manager does it automatically.
However, a different version of eslint was detected higher up in the tree:

 /Users/zacharyschneider/node_modules/eslint (version: 5.16.0) 

Manually installing incompatible versions is known to cause hard-to-debug issues.

If you would prefer to ignore this check, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project.
That will permanently disable this message but you might encounter other issues.

To fix the dependency tree, try following the steps below in the exact order:

 1. Delete package-lock.json (not package.json!) and/or yarn.lock in your project folder.
 2. Delete node_modules in your project folder.
 3. Remove "eslint" from dependencies and/or devDependencies in the package.json file in your project folder.
 4. Run npm install or yarn, depending on the package manager you use.
    In most cases, this should be enough to fix the problem.
    If this has not helped, there are a few other things you can try:

 5. If you used npm, install yarn (http://yarnpkg.com/) and repeat the above steps with it instead.
    This may help because npm has known issues with package hoisting which may get resolved in future versions.

 6. Check if /Users/zacharyschneider/node_modules/eslint is outside your project directory.
    For example, you might have accidentally installed something in your home folder.

 7. Try running npm ls eslint in your project folder.
    This will tell you which other package (apart from the expected react-scripts) installed eslint.

If nothing else helps, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project.
That would permanently disable this preflight check in case you want to proceed anyway.

P.S. We know this message is long but please read the steps above :-) We hope you find them helpful!

error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
zacharyschneider@Zacharys-MBP %  

解决此问题或帮助我了解正在发生的事情的一种方法很好，也可以为我指明寻找资源的正确方向。
谢谢你的帮助

Answer 1

看来您已经手动安装了es-lint 5.16.0，并且与所需版本(6.6.0)冲突。
您是否尝试过错误消息中建议的步骤？
您是否在package.json中明确告知es-lint版本？如果您继续遇到问题，可以分享您的package.json吗？