当我创建一个反应应用程序时纱线错误代码 1

Question

当我使用 npx create-react-app 名称创建一个 React 应用程序并尝试 yarn 启动该应用程序时，我遇到了退出代码 1 的错误，更具体地说，这是一个

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:

  "webpack-dev-server": "3.11.0"

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

  /Users/tudor/node_modules/webpack-dev-server (version: 3.10.3) 

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 "webpack-dev-server" 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/tudor/node_modules/webpack-dev-server is outside your project directory.
     For example, you might have accidentally installed something in your home folder.

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

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.

如果我尝试启动一个较旧的应用程序，我尝试执行该步骤但仍然出现错误

Answer 1

完成我用 npm i webpack-dev-server

安装了 webpack-dev-server

Answer 2

尝试通过 yarn remove webpack-dev-server 删除 webpack-dev-server 并安装版本 3.11.0 作为 yarn add webpack-dev-server@3.11.0

Answer 3

None 以上答案对我有用，恐怕只有 SKIP_PREFLIGHT_CHECK=true。

当我创建一个反应应用程序时纱线错误代码 1

yarn error code 1 when i create a react app

npm

reactjs

webpack

yarnpkg