Question

我尝试使用以下命令创建一个React应用：

create-react-app eth-todo-list-react

这会产生以下错误：

'yarnpkg' is not recognized as an internal or external command,
operable program or batch file.
Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts...

'yarnpkg' is not recognized as an internal or external command,
operable program or batch file.
events.js:167
      throw er; // Unhandled 'error' event
      ^

Error: spawn yarnpkg ENOENT
    at notFoundError (C:\Users\Aristophanes\node_modules\create-react-app\node_modules\cross-spawn\lib\enoent.js:6:26)
    at verifyENOENT (C:\Users\Aristophanes\node_modules\create-react-app\node_modules\cross-spawn\lib\enoent.js:40:16)
    at ChildProcess.cp.emit (C:\Users\Aristophanes\node_modules\create-react-app\node_modules\cross-spawn\lib\enoent.js:27:25)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:246:12)
Emitted 'error' event at:
    at ChildProcess.cp.emit (C:\Users\Aristophanes\node_modules\create-react-app\node_modules\cross-spawn\lib\enoent.js:30:37)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:246:12)

应该说“成功”并初始化git仓库。但是我得到了上面的错误。我尝试了各种方法的故障排除，包括更改路径和全局安装yarn，但是当我这样做之后，再次尝试创建react应用程序时，出现此错误：

The directory eth-todo-list-react contains files that could conflict:

  package.json
  yarn.lock

Either try using a new directory name, or remove the files listed above.

如果我删除此文件并尝试再次创建react应用，则会再次遇到第一个错误。

Answer 1

尝试使用npx命令，

npx create-react-app my-project

如果您使用npx，则不需要像create-react-app这样的全局安装软件包。

所有人都告诉node -v和npm -v

Answer 2

通过在控制台中输入C来获取create-react-app的版本。这使用2.1.5版为我成功构建。您可能需要更新您的create-react-app。 create-react-app --version npm uninstall -g create-react-app 应该使用最新版本的create-react-app。

尝试创建React应用时出现纱线错误

2 个答案: