Javascript 为什么npm开始不适用于React JS？

我似乎无法使我的React应用程序在localhost上运行。有人能帮我解决为什么

npm start

不起作用吗？我遵循了所有的指令，但命令行给我的指令似乎都不起作用，并且多次尝试这个过程，但仍然没有成功

 $ npm start

 > appify@0.1.0 start C:\Users\javie\Desktop\appify\appify
 > 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": "10.0.3"

 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:

 C:\Users\javie\node_modules\babel-eslint (version: 7.1.1)

 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 C:\Users\javie\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!

 npm ERR! code ELIFECYCLE
 npm ERR! errno 1
 npm ERR! appify@0.1.0 start: `react-scripts start`
 npm ERR! Exit status 1
 npm ERR!
 npm ERR! Failed at the appify@0.1.0 start script.
 npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

 npm ERR! A complete log of this run can be found in:
 npm ERR!     C:\Users\javie\AppData\Roaming\npm-cache\_logs\2020-03-18T20_13_42_803Z-debug.log

---

您是否尝试从其他

node_modules

目录（

C:\Users\javie\node_modules\babel-eslint

）中卸载

babel-eslint

）？否删除它的命令可能取决于您的安装方式，看起来像是全局安装，在这种情况下，您可以执行

npm uninstall-g babel-eslint

。否则导航到该目录（

C:\Users\javie\node\u modules

）并运行

npm uninstall babel eslint

。卸载此软件可能会影响依赖此安装的其他项目，但最好不要全局安装大多数软件包。我以前遇到过此错误，通常是因为我全局安装了软件包。在我从我的全局npm包目录中删除它们之后，事情似乎又开始工作了。