尝试创建React应用时出现纱线错误

Question

我尝试使用以下命令创建一个React应用程序：

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

这将产生以下错误：

'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)

它应该说“成功”并初始化一个git仓库。但是我却得到了上面的错误。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 app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，则不需要像那样全局安装软件包create-react-app。全部告诉node -v和npm -v

Answer 2

通过create-react-app --version在控制台中输入来获取您的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。 npm uninstall -g create-react-app npm create-react-app eth-todo-list-react 应该使用最新版本的create-react-app。