'yarn start' 拋出 babel-eslint 錯誤 MacOS，我該如何解決這個錯誤？

Question

我正在嘗試創建一個 React.js 應用程序，但是一旦創建，我嘗試在終端中使用“yarn start”運行我得到這個：

yarn run v1.12.3
$ react-scripts start

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:

  "babel-eslint": "10.0.1"

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

  /Users/olliesaunderson/node_modules/babel-eslint (version: 9.0.0) 

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 "babel-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/olliesaunderson/node_modules/babel-eslint is outside your project directory.
     For example, you might have accidentally installed something in your home folder.

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

我已嘗試按照建議的步驟進行操作，但是這些似乎都不起作用。 我也試過yarn add --exact react-scripts@3.0.1和yarn cache clean

Answer 1

我修好了它！

因此，正如錯誤所示，在我的依賴關系樹中較高的某個位置有一個現有的“babel-eslint”文件夾。 我所要做的就是在finder中搜索該文件夾，然后將其刪除，完成后您可以再次“紗線安裝”和“紗線啟動”，然后它應該可以工作:)

我不知道這個另一個“babel-eslint”文件夾來自哪里......